Home

interhome: extension on assisted living - Introduction

Contents

1. 411 i ABSTRACT dre ii 6 iii TABLE OF CONTENTS eic Dreier tees iv LIST OF FIGURES en cette ais ee sese vi LIST OF TABLES trot oe cbe eerte bete vii GLOSSARY uuu ul yuy viii 1 1 1 1 PROJECT 4 000 0 1 1 2 RELATED WORKS eet tee pete us 22 2 1 3 AIMS AND 6 3 T A4PROJEGT FEASIBILITY 2 iccirco oet ce creer eerte tests 5 1 5 REPORT GUIDELINE eene 5 2 SUBJECT REVIEW creto ttr teer te e 6 2 1 HOME AUTOMATION eeceeeeennnnnnn nnnm nenne nnn nnns 6 2 2 SMART nnne nn nnn nsn 7 2 3 INTERHOME 8 24C BUS nn 2 8 2 5 MICRO 10 2 6 XBEE COMMUNICATION 5 5 10 3 PROJECT DESIGN AND 12 3 1 SYSTEM 12 S 2 SYSTEM DESIG N 14 3 2 1 MICROCONTROLLER UNIT Me
2. epis dd cero 41 Figura 5 2 ABee USB Adaptor 40 Senex one 42 Figure 5 3 a Direction of G force of body in vertically b Direction of G force in transversely 34 43 Figure 5 4 a Data of normal movement b Graph of the normal movement 44 Figure 5 5 a Data of falling towards forward b Graph of the output 45 Figure 5 6 a Data of falling towards left hand side in forward way b Graph of the DUIpUL i iie tret tnnt ula eR en a Desk p ta dE 45 Figure 5 7 a Data of falling towards right hand side in front way b Graph of the output 46 Figure 5 8 Operation of Panic 47 Figure 5 9 Pul TY WIPIdOW uic rtt ei DUM SEM Fab 48 Figure 5 10 Data transmission in running session of PUTTY by using 4 49 Figure 6 1 Summery of proposed the project 50 LIST OF TABLES Table 2 1 Device terminology in I C bus 22 9 Table 2 2 Specification difference between XBee and XBee PRO 25 11 Table 3 1 UART pins description of Meridian p 28 16 Table 4 1 Register CTRL_REG1 description 301 0 0 2 36
3. 31 Figure 4 6 Solution Explorer 31 Figure 4 7 Writing references in main programming 32 Figure 4 8 a Code for 051624 b Code for LIS302DL 32 Figure 4 9 a Register declaration of 051624 b Register declaration of LIS302DL 33 Md Zaman InterHome Extension on Assisted Living vi University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report Figure 4 10 Code for inside the memory block of 051624 35 Figure 4 11 Code for inside the memory block of LISSO02DL 35 Figure 4 12 measurement code for temperature sensor and accelerometer 37 Figure 4 13 Programming code for Panic 38 Figure 4 14 A part of code for embedded device in Progarm cs 38 Figure 4 15 Code for output of the embedded 39 Figure 4 16 Code from 2C cs a 39 Figure 4 12 Code written in main function declares 40 Figure 5 1 Hardware Testing
4. 49 6 1 TIME 49 6 2 RESOURCE 5 2 50 6 3 RISK 5 50 7 CONCLUSIONS c do ett Fiere ders Ghee ds 51 7 1 COMMERCIAL AND SOCIAL 51 7 2 FUTURE 53 u u Cuin eei Ep v rev gus 54 BIBLIOGRAPHY E ERE ERI DRE RE RR 58 58 Md Zaman InterHome Extension on Assisted Living M University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report LIST OF FIGURES Figure 2 15 Smart Home tu nisu ea Dd Dus acu beu CI NEED 8 Figure 2 2 Devices connected with Microcontroller using 2 bus 9 Figure 2 3 Communication between UART pin of Microcontroller and XBee Module 25 a tte th p n 2 ERR RR 11 Figure 3 1 System Operation of Wrist Belt and existing Smart Home System InterHome 13 Figure 3 2 Block diagram of the 14 Figure 3 3 a View of Meridian P b Available connection 28 c Schematic Pin notified Expansion 2 EXP2 of Meridian P 28 15 Figu
5. _slave ReadRegister DS1624 REG CONFIG dataBuffer 50 I2CSlave ReadRegister config CONFIG dataBuffer TIMEOUT catch System IO IOException e Debug Print e Message return dataBuffer 0 region IDisposable Members lt summary gt Dispose object lt summary gt public void Dispose using I2CSlave slave new I2CSlave deviceAddress _slave Dispose u endregion endregion internal sealed class LIS302DL region Fields private I2CDevice Configuration deviceConfig private int timeOut 50 private byte dataBuffer new byte 2 0x00 0x00 fendregion Md Zaman InterHome Extension on Assisted Living 64 University of Hertfordshire School of Engineering and Technology region Constants const int CLOCK Rate 100 const byte DEFAULT Address 0x1C const byte REG WHO AM 0x0F const byte REG CTRL 0x20 const byte REG CTRL REG2 0x21 const byte REG CTRL REG3 0x22 const byte REG HP FILTER RESET 0x23 const byte REG STATUS 0x27 const byte REG OUTX 0x29 const byte REG OUTY 0x2B const byte REG OUTZ 0x2D const byte FF WU CFG 1 0x30 const byte REG FF WU SRC 1 0x31 const byte REG FF WU THS 1 0x32 const byte REG FF WU DURATION 1 0x33
6. set I2CSlave WriteRegister deviceConfig LIS302DL REG CLICK CFG value timeOut Md Zaman InterHome Extension on Assisted Living 69 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report I12CSlave ReadRegister deviceConfig LIS302DL REG CLICK CFG dataBuffer timeOut return dataBuffer 0 public byte CLICK SRC get 12CSlave ReadRegister deviceConfig LIS302DL REG CLICK SRC dataBuffer timeOut return dataBuffer 0 public byte CLICK THSY X I2CSlave WriteRegister deviceConfig LIS302DL REG CLICK THSY X value timeOut I12CSlave ReadRegister deviceConfig LIS302DL REG CLICK THSY X dataBuffer timeOut return dataBuffer 0 public byte CLICK THSZ I12CSlave WriteRegister deviceConfig LIS302DL REG CLICK THSZ value timeOut 12CSlave ReadRegister deviceConfig LIS302DL REG CLICK THSZ dataBuffer timeOut return dataBuffer 0 public byte CLICK TimeLimit set I2CSlave WriteRegister deviceConfig LIS302DL REG CLICK TimeLimit value timeOut get Md Zaman InterHome Extension on Assisted Living 70 University of Hertfordshire B School of Engineering and Technology BEng Final Year Project Report I12CSlave ReadRegister deviceConfig LIS302DL
7. 5 TESTING AND RESULT ANALYSIS The proposed device is testing after designing the hardware and programming This chapter describes on the results which got from the hardware and software implementations In Section 5 1 focused on the hardware testing This testing is basically based on the breadboard design But software testing is on the programming code and analysed on the outputs that get from the designed device in Section 5 2 5 1 HARDWARE After designing the circuit on the breadboard measures the output voltage of different points by using multi meter The whole device is powered by Meridian P Pin 3 of Meridian P is used here as source for 3 3V for the sensors The system requires approximately 305mA current that is measured by multi meter Some components are connected with LED in the breadboard Those LEDs give indication Those LEDs can be used for testing as well Md Zaman InterHome Extension on Assisted Living 40 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report Two LEDs are connected with XBee module Pin 13 of XBee defines as Module Status Indicator and Pin 15 is notified as associate indicator 25 Pin 13 connects with red colour LED and Pin 15 connects with green colour LED When the system is running then the Red LED turns ON and Green LED blinks continuously is shown in Figure 5 1 Three LEDs are used in Charging IC Pin 8 is for power supply indication which is
8. Waaa _ _ inpune ani propo T _LhT_BF lt vy o s b Figure 4 1 a View of Breadboard and b its operation 37 Breadboards have many small socket holes approximately 0 1 on grid 37 In the centre there is no connection DIP ICs are placed on it Two blocks of 5 holes are placed both sides of the centre line Those are vertically internal connected which remarked with blue line in Figure 4 1 a and b The top and bottom rows both are connected horizontally These two lines of top or bottom can be used as positive and negative polarity of power supply Md Zaman InterHome Extension on Assisted Living 25 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report In Figure 4 1 b shows that an IC on the centre line So it all of its pins are connected separately Also shows that a LED is connected with a resistor In this project some components requires separate adaptor to place on the breadboard such XBee and Charging IC MCP73837 AC DC Adaptor 12C Bus Charging MCP 73837 Meridian P Microcontroller 051624 1530201 GPIO Pin Li lon Battery 3 7v f 8 Panic Button UART Pin USB RECOM 3 3V 5V DC DC Convertor Figure 4 2 The conce
9. Hertfordshire 8 School of Engineering and Technology BEng Final Year Project Report Project Plan Inter Home Extension on Assisted Living Project Title Project Start amp Supervisor First Meeting Analysis The Project Topic and Make Literature Search Collcet data for all approximate Work on Fisibility Report amp Submission Equipments Ordered and Haned In Work on Hardware Design Project Seminar amp Interim Project Christmas Holiday and Self Study Exam Preparation Exam Week Work on Hardware Design and Learn Testing Error Correction and Further Complete Practical and Programming Poster Session Report Writing Report and Whole Project Submission 0 5 10 15 20 25 Duration Working Days Figure 6 1 Summery of proposed the project plan 6 2 RESOURCE ANALYSIS This embedded device is designed on then Meridian P microcontroller All components are visible in market Some components require separate adaptor to connect on the breadboard Here XBee and Charging IC need adaptor to connect on the breadboard That s why the additional cost in hardware has been increased In the software design Microsoft Visual studio 2008 Professional is provided and PuTTY is downloaded free from online There is no cost in software development 6 3 RISK ASSESMENT This embedded device is wearable so it is designed to consider the human body So the risks of any danger are considered This device is powered by
10. on ejo 9 LED 5 Green LED 6 Red XBee USB Adaptor Figure 5 2 XBee USB Adaptor 40 When the designed system turns OFF means no data transmission then LED 1 Blue and LED 5 Green turn OFF LED 2 Pink Red consists of two LEDs LED 2 turns in Red colour and it blinks LED 3 Yellow and LED 4 Green turn ON If the designed device turns ON then the receiving XBee changes the colour of LEDs LED 1 Blue turns ON and LED 2 turns ON in Pink colour with blinking that means the receiving XBee has got network of another XBee That shows in Figure 5 1 As well as the transmission process is running LED 3 Yellow and LED 4 Green keep ON LED 6 RED turns ON at the beginning The designed hardware device is working properly The system is tested and analysed in above 5 2 SOFTWARE The programming code is written in C language on NET Micro Framework It is written in Microsoft Visual Studio 2008 The written code is applied on the hardware design through Meridian P So the designed device is connected with a PC The code is implemented on the device through that PC The code has already discussed in Section 4 2 Md Zaman InterHome Extension on Assisted Living 42 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report The accelerometer measures the body movement form 8g to 8g G force or Gravitational Force is described earlier in Section 3 2 2 It can be varied in d
11. 2 ToString text DateTime Now ToString Debug Print text xbee WriteData text Figure 4 15 Code for output of the embedded device 4 2 4 I2C BUS OPERATION DS1624 and LIS302DL are connected with Meridian P through 2 two wires bus This bus is described in section 2 4 It has data transmission protocol The device is worked as transmitter when the device sends data to the bus 29 It acts as receiver when receives data from the bus The device is called master when it controls the data and if the device is controlled by the master then called slave 29 051624 and LIS302DL both are worked as slave device shows in Figure 4 16 29 30 Both sensors operate in START and STOP condition The master generates a clock signal is Serial Clock SCL 29 public static class I2CSlave private static I2CDevice _slaveDevice new I2CDevice new I2CDevice Configuration 0 0 private static byte registerBuffer new byte 1 0x00 private static byte writeBuffer new byte 2 0x00 0x00 Figure 4 16 Code from I2C cs When the data and clock lines both are in HIGH then the bus is not in busy condition So that is time to transfer data In I2C bus data transfer starts when the bus is not busy 29 30 If the data line changes from HIGH to LOW but the clock line remains HIGH The situation is called START condition There one clock pulse per bit of data 29 After START condition the data
12. 3 3V DC I2C SDA 12C SCL Front Side eS x PN E LIS3071 JL Maotion Vcc GND SCL MOSI SD A MISO SDO cs 1 2 3 Pin 17 GPIO6 Pin 13 GPIO2 a b c Figure 3 5 a View of LIS302DL b Schematic pin outline of LIS302DL 30 c Connection of LIS302DL It has 8 pins Pin 1 is connected with 3 3V of supply voltage which is provided from Pin 3 of Meridian P Pin 2 is connected with ground Pin 3 is SCL Pin 4 and Pin 5 are notified is as MOSI and MISO Both pins are used for SPI MISO Master Output Slave Input and MISO Master Input Slave Output is used as SDA Serial Data Address and SDO Serial Data Output 30 31 Pin 3 and Pin 4 is connected with SCL and SDA Pin 5 leaves open Pin 5 is CS This is 2 or SPI mode selection 30 The value is 1 for I2C mode 0 for SPI enabled 30 So due to using 2 bus connected with supply voltage 3 3V Pin 7 and Pin 8 is interrupt pin Both are connected with GPIO pin of Meridian P So Pin 7 and Pin 8 are connected with Pin 17 GPIO6 and Pin 13 GPIO2 of Meridian P The registers mode and bus interface operation is given in Section 4 2 1 and Section 4 2 4 Panic Button is additionally attached with this wrist belt In design proposed a panic button which helps assisted people to call for assistance without any speech This panic button is more applicable some specific people who are unable or hard to speak due to disability In Figure 3 6 sh
13. Data Telnet Rlogin SSH Serial About Basic options for your PuTTY session Specify the destination you want to connect to Serial line Speed 4 9600 Connection type Raw Telnet Rlogin SSH Q Serial Load save or delete a stored session Saved Sessions Default Settings Load Save Delete Close window on exit Always Never Only on clean exit Oe Ca PuTTy runs in all operating system The PuTTY comes out with the window shows in Figure 5 9 Serial port is used as connection mode for this project When the receiving XBee connects with USB adaptor then after installation it informs about the connected serial line is used as serial line with interface speed of 9600 bps All are selected in Figure 5 9 PuTTy runs after selecting Open Two XBees are connected in a network The designed wrist belt sends data and the receiving XBee is picked those data The data is sending through wireless network continuously The device sends the data of temperature sensor and accelerometer shows in Figure 5 10 In case of emergency if Figure 5 9 PuTTy window the users press panic button for asking help shows on the PuTTY display window by writing Need Assistance It is marked by blue underline in Figure 5 10 Md Zaman InterHome Extension on Assisted Living 48 University of Hertfordshire School of Engineering and Techn
14. Md Zaman InterHome Extension on Assisted Living vii University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report GLOSSARY MEMS Micro Electro Mechanical systems GPRS General Packet Radio Service UMTS Universal Mobile Telecommunications System PDA Personal Digital Assistant SPI Serial Peripheral Interface IP Internet Protocol CPU Central Processing Unit SDA Serial Data Address SCL Serial Clock Line pF kF pico farads kilo farads LR WPAN low rate wireless personal area networks DSSS Direct Sequence Spread Spectrum UART Universal Asynchronous Receive Transmitters CTS RTS Clear to Send Request to Send GSM Global System for Mobile Communications GPIO General Purpose Input Output Li ion Lithium lon DIP Dual In line Package MISO Master Output Slave Input MISO Master Input Slave Output SDO Serial Data Output AC DC Access Current Direct Current MSOP Mini Small Outline Package USB Universal Serial Bus FPGA field programmable gate array PCB Printed Circuit Board Md Ibna Zaman InterHome Extension on Assisted Living viii University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report 1 INTRODUCTION The development in a residential network for smart healthcare is broad up a new horizon for continuous long term monitoring of assisted and independent living residents The introduction
15. RIS Existing Smart Home System DI data in DO data out RTS Figure 2 3 Communication between UART pin of Microcontroller and XBee Module 25 Md Zaman InterHome Extension on Assisted Living 11 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report 3 PROJECT DESIGN AND DEVELOPMENT This project is based on the exiting Smart home system called InterHome Here design a device for assisted living people of the InterHome to provide 24 hours health monitoring service In section 3 1 have explored the architecture by developing a collection of applications and implementing them in a prototype system Also describes regarding designed wrist belt In section 3 2 focuses on only wrist belt There also demonstrates design of each part of wrist belt like sensor unit communication unit power management unit and microcontroller unit Every unit connects and works altogether The schematic diagram of the designed system is given in section 3 2 3 1 SYSTEM OVERVIEW Main theme of this project is to design a device for assistive residences to monitor their health in 24 hours basis This is a home automation system Here propose a wearable wrist belt which is designed with XBee and sensors LIS302DL and DS1624 are picked as accelerometer and temperature sensor Additionally a panic button is added in the design for the people who have problems in sp
16. University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report Figure 4 4 shows two PCBs which are designed during work on this project Figure 4 3 a is designed without power management unit The schematic diagram of the wrist belt shows in Figure 4 4 b which is inserted on the PCB boards in Figure 4 3 b But it designed on 48mm PCB board 37 40 mm 37 40 mm without Power Management Unit Update PCB uith Pouer Management Unit a b 47 40 Cmm Figure 4 4 a PCB without Power Management Unit 37 4 mm b PCB with Power Management Unit 48 mm In PCB all components are connected with electrically The connections show lines on the board Every component is soldered on the board PCB design is more applicable to reduce the size of circuit This is less expensive and more reliable way to design for manufacturing 4 2 SOFTWARE IMPLEMENTATION The programming code is written for this device in C on NET Micro Framework The NET Micro Framework is earlier in Section 2 5 The code is written by using Microsoft Visual Studio 2008 This section points out the code for every component Meridian P runs in NET Micro Framework It requires downloading Device Solution SDK to work on this microcontroller Version 3 is used for this project As well as download NET Micro Framework 3 5 from Microsoft Website Open a new project by selecting New
17. DIS GND Panic Button U ETIT 444444444 b Figure 3 10 a Schematic of the proposed wrist belt b Pin outline of each component Md Zaman InterHome Extension on Assisted Living 24 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report 4 IMPLEMENTATION The proposed design is applied on hardware and software implementation for testing and analysis After designing on breadboard the programming code is implemented So this section describes hardware and software implementation of the proposed design 4 1 HARDWARE IMPLEMENTATION This section provides hardware implementation of the design In this project at first the design is tested by using breadboard design After hardware testing the programming code is applied Breadboard is a prototype for the proposed wrist belt device This is not final product When the breadboard design is finished then upgrades the design in PCB Printed Circuit Board PCB provides the pattern for manufacturing So PCB design includes in hardware implementation describes in Section 4 1 2 4 1 1 BREADBOARD DESIGN Breadboard design gives more flexibility in design This does not require any soldering So the components can be added or removed at any time The main design can be modified at any time Figure 4 1 shows the view of breadboard Waaa svooo RR
18. InterHomeMenP e 3 X Alaa od Solution InterHomeMeriP 1 project 3 9 InterHomeMeriP Sa Properties amp References 2 43 DeviceSolutions SPOT Hardware MeridianP Microsoft SPOT Hardware Microsoft SPOT Hardware SerialPort C3 Microsoft SPOT Native Microsoft SPOT TinyCore mscorlib c EzSerial cs DCSlave cs InterHomeConfig cs S Program cs Resources resx Resources Designer cs lt RoomBoard cs XBee cs References Programming for Components Figure 4 6 Solution Explorer window Md Zaman InterHome Extension on Assisted Living 31 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report In the code references are added at the beginning then the code is written under public class shows in Figure 4 7 To write reference starts with using statement Eusing System using Microsoft SPOT using Microsoft SPOT Hardware using System Threading using DeviceSolutions SPOT Hardware E namespace InterHomeMeriP t public class Program t Figure 4 7 Writing references in main programming code In this project temperature sensor and accelerometer is coded in RoomBoard cs 2 Bus and serial port are coded separately All the components are altogether coded in Program cs 4 2 1 TEMPERATURE SENSOR AND ACCELEROMETER In this project using 051624 as temperat
19. University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report connected on the belt when requires more range and Series 2 for more security In Table 2 2 shows the specification between XBee and XBee PRO Specification XBee 802 15 4 Series 1 XBee PRO 802 15 4 Series1 Indoor Range Up to 30m Up to 100m Outdoor Range Up to 100m Up to 1500m Transmit Power Output 1 60 Receive Current 50mA 55mA Operating Temperature 40 C to 85 C 40 C to 85 C Serial Interface Data Rate 1200 115200 bps 1200 115200 bps RF Data Rate 250 000 bps 250 000 bps Number of Channels 16 Direct Sequence 12 Direct Sequence Operating Voltage 2 8V 3 4V 2 8V 3 4V Table 2 2 Specification difference between XBee and XBee PRO 25 XBee XBee PRO is interfaced to a host device through a logic level asynchronous serial port 25 Here XBee is connected with the UART pin of the microcontroller Meridian P So the data which is send from Meridian P that will be received by XBee As well as it will again operate like vice versa The details connection between Meridian P and XBee as well as information of CTS and RTS is given in section 3 2 3 Through its serial port the module can communicate with any logic and voltage compatible UART shows in Figure 2 3 25 Proposed Wrist Belt DI data in WEE Mierocontrol r po data out
20. connected with Red LED Pin 3 and Pin 4 are called STAT pin for charging IC 35 The details of connection are provided in Section 3 2 4 Green LED connects with Pin 3 and Yellow LED connects with Pin 4 When the Li lon battery is on charged then the Red LED and Yellow LED turn on When it finishes charging then both LEDs are turned OFF Green LED is for charging status indicator which is for interfacing by microcontroller MCP73837 Yellow LED MCP73837 Red LED MCP73837 Red LED XBee Green LED XBee XBee on USB Adpator Figure 5 1 Hardware Testing A Yellow LED connects with RECOM DC DC converter This converts 3 3V DC to 5V DC The Li lon battery is connected with Vin pins Pin 1 and Pin 2 These pins are used for input supply The LED is connected in series with Vout pins Pin 3 and Pin 4 It turns ON when the system runs by the battery That means the supply voltage has converted After designing on breadboard the transmission of the system can be checked by using another XBee This separate XBee is connected on the XBee USB Adaptor shows in Figure 5 2 This is counted as receiver XBee Md Ibna Zaman InterHome Extension on Assisted Living 41 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report LED 1 Blue LED 2 Pink Red LED 3 Yellow LED 4 Green ett iui 7 9 oo _
21. 00 241212115101 01 2004 00 241211114101 01 2004 00 241210115101 01 2004 00 241212114101 01 2004 00 241212114101 01 2004 00 01 01 2004 00 00 07 True Need Assistance 241213114101 01 2004 00 00 08 241213115101 01 2004 00 00 08 241312114101 01 2004 00 00 09 4 d Error List ZJ Output 77 Locals z Watch 1 Figure 5 8 Operation of Panic Button 5 2 3 OBSERVATION OF DATA TRANSMISSION The wrist belt monitors the user for 24 hours So the data transmissions never stop For testing here uses another XBee Module as receiver The receiver XBee is connected with the InterHome system The receiver XBee is connected on the top of XBee USB Adapter There are some LEDs with USB Those show some indications as well The details are given in Section 5 1 on hardware testing To observe the data transmission use PuTTY in the PC PuTTY works as an open source terminal emulator application for SSH Telnet and Rlogin network protocol 41 The given protocols are used for operating a remote session on the PC through a network 41 It shows the display of the running session Md Zaman InterHome Extension on Assisted Living 47 University of Hertfordshire School of Engineering and Technology PuTTY Configuration BEng Final Year Project Report Category Session Logging Terminal Keyboard Bell Features Window Appearance Behaviour Translation Selection Colours H E Connection
22. 24 Transmitting data line for UART UART1 RTS 2 Pin 26 Input line to the Meridian P UART1 RXD EXP2 Pin 28 Receiving data line for the UART UART1 CTS 2 Pin 30 Output line from the Meridian P Table 3 1 UART pins description of Meridian p 28 3 2 2 SENSORS UNIT Sensor Unit is combined with two sensors and panic button This device is designed with DS1624 temperature sensor and LIS302DL accelerometer LIS302DL is three axis accelerometer and DS1624 is digital temperature sensor Both are enable to connect with 2 serial interface In this section has explained the connections of both sensors as well as the panic button Both are using supply voltage and 2 bus from Meridian P Here using DS1624 of 8 pin DIP Dual In line Package DS1624 consists of two seperate functional units Those are 256 byte non volatile E memory direct to digital temperature sensor 29 E Memory are able to store any information depends on the user desires such as frequency compensation coefficients and direct to digital temperature sensor allows the DS1624 to measure the ambient temperature value in a 13 bit word with 0 03125 C resolution 29 For this project using direct to digital function The temperature sensor and its related registers are accessed through the 2 wire serial interface 12C bus 29 In Figure 3 4 shows pins identification and Md Zaman InterHome Extension on Assisted Living 16 University
23. IOException e Debug Print e Message Md Zaman InterHome Extension on Assisted Living 62 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report lt summary gt Temperature Reading lt summary gt public byte Temp CES using 2 51 _slave new T2CSlave _deviceAddress _slave ReadRegister DS1624 REG TEMP _dataBuffer ay I2CSlave ReadRegister config REG TEMP _dataBuffer TIMEOUT catch System IO IOException Debug Print e Message return dataBuffer 0 lt summary gt Memory lt summary gt public byte Memory CEY using 2 51 _slave new I2CSlave deviceAddress _slave ReadRegister DS1624 REG MEMORY dataBuffer ud I2CSlave ReadRegister config REG MEMORY dataBuffer TIMEOUT catch System IO IOException Debug Print e Message return dataBuffer 0 fendregion summary Md Zaman InterHome Extension on Assisted Living 63 University of BEng Final Year Project Report Hertfordshire School of Engineering and Technology Config lt summary gt public byte Config CEY using 2 51 _slave new I2CSlave deviceAddress
24. Li lon battery The microcontroller requires 5V DC and 80mA current 28 The whole device need approximate 300mA of current It operates at very low voltage and current So there is no risk of electric shock The proposal PCB is designed on 48mm So the final product would be very light weight to bind on wrist Md Zaman InterHome Extension on Assisted Living 50 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report 7CONCLUSION The aim of this project is to design a device for assistive residence which will send data wirelessly to the existing Smart Home system called InterHome By sending data the embedded device monitors and updates the health condition of the assistive residence So a wrist belt is proposed which is for 24 hours home based health monitoring system The device is designed with the Meridian P body sensors and XBee By using XBee the device transmits data to the receiver is shown in Section 5 2 3 So the main aim of this project has successfully achieved Additionally Power Management Unit is added for charging the battery This unit is working properly So the device can work as wireless and portable device So the wrist belt is low cost and remote monitoring system which has been developed It enables to provide an assistive person to retain independent lifestyle while he or she still is being monitored It provides long term data and continuous monitoring Th
25. Project The window appears shown in Figure 4 5 Select Micro Framework gt gt Console application gt gt OK Md Zaman InterHome Extension on Assisted Living 30 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report Web Smart Device Office Database Micro Framework Reporting Test WCF Workflow Other Languages Other Project Types Test Projects Location Solution Name MEConsoleApplication Templates Visual Studio installed templates Library amp Device Emulator My Templates 3 Search Online Templates A project for creating NET Micro Framework console applications MFConsoleApplication NET Framework 3 5 gt E Console Apphcation Fa Window Apphcaton 7 Create directory for solution Cancel Figure 4 5 New Project window for creat new porject Then the main project window opens Sloution Explore windows is in the right hand side of the main window Wirte the C code in Program cs file To write the code requires add Refererences Sometimes requires writing code against an external component so the project must first contain a reference to it References can be added by right clicking on the Reference gt gt Add References Then Add Reference box appears Select the particular ref erence and OK Six references are used in this project shows in Figure 4 6 Solution Explorer Solution
26. SDA and a serial clock line SCL 22 It is a multi master bus including collision detection and arbitration to prevent data corruption if two or more masters simultaneously initiate data transfer 22 It is serial and 8 bit oriented and bidirectional as well The data transfers can be made at up 10100 kbit s in the standard regular mode or up to 400kbit s in the fast mode 22 But now a high speed 3 4 Mbit s available 21 This bus can be connected by wires The serial data SDA and serial clock SCL carry information between the devices connected to the bus Every single device is recognized by a unique address 22 The SDA and SCL lines are pulled up to the supply voltage 3 3V to 5V with a pull up resistor 23 As well as the number of devices connected to the bus is only limited by the bus capacitance is considered of 400pF 23 This bus is low power consumption and flexible to use Here the sensors are connected with microcontroller by using I C bus The device can operate as either a transmitter or receiver depending on the function of the device In addition to transmitters and receivers devices can also be considered as masters or slaves during data transmission 23 A master is the device which initiates a data transfer on the bus and generates the clock signals to permit that transfer At that time any device addressed is considered a slave 23 Table 2 1 shows its operation In Section 4 2 4 the operation of this bus is given
27. Smart Home 16 Smart home technology is real and it s becoming increasingly sophisticated 19 The idea of Smart Homes carries a vital role in the planning of future housing based models of care 2 3 INTERHOME InterHome an existing smart home concept which has been designed to test and demonstrate how much greener and secure our homes could be if they incorporated intelligent technologies that adapt to our daily routine The design of this project demonstrates the interoperability of the unit in a smart home environment Smart Home which is based on Meridian CPU is known as InterHome 20 2 4 C BUS In this project all the sensors are only connected with microcontroller Meridian P by using IC bus This bus is designed from the manufactures of the component It is multi master bus So more than one device can be connected with this bus shows in Figure 2 2 The 12 translates into Inter IC can be called as IIC or 12C Bus 21 The bus I C as designed by Philips in the early 80s to allow easy communication between components which reside on the same circuit board Philips Semiconductors migrated to NXP Semiconductor in 2006 21 Md Zaman InterHome Extension on Assisted Living 8 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report J mnn Figure 2 2 Devices connected with Microcontroller using 2 bus I C Bus requires two bus lines a serial data line
28. XBee Module of InterHome XBee is connected is with Meriden P through UART pins Table 3 1 provides information regarding UART pins of Meridian P Pin 1 is connected with the supply voltage 3 3V of Pin 3 in Meridian P Pin 10 is connected with ground Pin 2 is UART data output pin for XBee 25 So it is connected with Pin 28 of Meridian P Pin 28 of Meridian P is UART1 RXD This is UART data input pin for Meridian P Data received in this pin is processed by internal UART 28 In other way Pin 2 of XBee is UART data input pin 25 So here makes a connection of this pin with Pin 24 of Meridian P Pin 24 of Meridian P is notified as UART1 TXD This is transmitting data line for UART 28 So data is transmitted form Meridian P to XBee Pin 9 and Pin 13 both are connected with GPIO pins of Meridian P Pin 9 is an input pin for sleep control line and Pin 13 is an output pin for ON Sleep mode indicator 25 Pin 9 is connected with Pin 210f Meridian P GPIO7 and Pin 13 is connected with Pin 23 of Meridian P GPIO8 CTS and RTS Both pins are common in Meridian P and XBee CTS means Clear To Send and RTS means Ready To Send 25 In Meridian P Pin 30 is identified as UART1 CTS which is an OUTPUT signal from Meridian P and Pin 26 is notified as UART1 RST that is an INPUT line to the Meridian P 28 So CTS pin of XBee is connected with the RTS pin of Meridian P That means data is flowing from XBee to Meridian P In other hand RTS pin of XBee
29. all values are inserted in constant HORS EEUCTS It defines as class methods that executed when an object is created 39 Here the objects are defined in Constant block The constructor is called 12C bus time out bus speed and default address for 051624 and addressed clock rate and default address for LIS302DL is located the resister mapping except default register It defines the register address operation mode Both sensors are worked as a slave device After START the slave address is sent 2 Slave Address can operate in Read Write Mode In this block the operation mode is defined If the register address is only Write mode then it works in set statement When the register address is only Read mode then it works in get statement In other hand when the register address is in Read Write then it uses both statements The output can get from only Read type register Figure 4 10 shows the Member Block only for the Start Conversion Temperature register of DS1624 Here using only set statement as the 2 Slave Address of Start Conversion register is only in Write mode Md Zaman InterHome Extension on Assisted Living 34 University of Hertfordshire d School of Engineering and Technology BEng Final Year Project Report region Members public byte StartConversion t set t try using I2CSlave _slave new I2CSlave deviceAddress t Slave WriteRegister DS1624 REG START _dataBuffer I2C
30. and measurement unit is in metric So click Next Select Unit Metric mm gt gt select Dual line Package DIP Click Next gt gt Modify the dimension It helps to modify dimension by changing value Then click Next gt gt Modify Pin Distance This is distance between two pins Then click Next Modify the width of outline Then click Next Change Pin Number So this is for Md Zaman InterHome Extension on Assisted Living 28 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report changing pin numbers Components are varied in pin numbers and configurations The dimension pin number and outline width must be similar with the component All information regarding this can be found in datasheet of the component Then click Next gt gt Change the Name So write down the name for the component Then select Next gt gt Finish Then Footprint appears in PCB Library Window To save click File gt gt Save So it saves under PCB Library Document gt Add new Footprint with the new component Now the designed foot print needs to add with the component So double click on the component from the Library Browser Then Component Properties Window appears Select on Model for Components gt gt Add gt gt FootPrint gt gt ok Then PCB Model Window comes out Click Foot Print Model gt gt Browse Select the designed footprint Then click Select Footprint gt gt ok So th
31. byte REG FF WU DURATION 2 0x37 const byte REG CLICK 0x38 const byte REG CLICK SRC 0x39 const byte REG CLICK THSY X Ox3B const byte REG CLICK THSZ 0x3C const byte REG CLICK TimeLimit 0x3D const byte REG CLICK Latency 0x3E const byte REG CLICK Window Ox3F endregion a b Figure 4 9 a Register declaration of 051624 b Register declaration of LIS302DL Similar to the DS1624 the accelerometer defines the default address by SDA In LIS302DL the 6 bits after the START signal contains the slave address When the SC is HIGH then START operates at HIGH to LOW operation on the data line 30 Md Zaman InterHome Extension on Assisted Living 33 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report Master transmits this and makes the bus busy The last bit 8 depends on Master s receiving or transmitting mode to the slave 30 So first Bit is START and then next 6 bit is Slave Address In this accelerometer Slave Address is 001 110 in binary 30 The last bit is LSB which be modified by SDO pin When SDO is connected with supply voltage then LSB is 1 30 On other hand if connects with ground GND then LSB 0 In this design SDO is grounded so LSB is 0 30 So default address of LIS302DL is 00011100 30 Now convert in hexadecimal that is 1 All registers including default register mapping show in Figure 4 5 b There
32. const byte FF WU 2 0x34 const byte REG FF WU SRC 2 0x35 const byte REG FF WU THS 2 0x36 const byte REG FF WU DURATION 2 0x37 const byte REG CLICK CFG 0x38 const byte REG CLICK SRC 0x39 const byte REG CLICK THSY X Ox3B const byte REG CLICK THSZ 0x3C const byte REG CLICK TimeLimit 0x3D const byte REG CLICK Latency 0x3E const byte REG CLICK Window Ox3F endregion region Constructors summary LIS302DL default address 0 lt summary gt public LIS302DL this LIS302DL DEFAULT Address summary LIS302DL Triple Axis Accelerometer lt summary gt lt param name deviceAddress gt lt param gt public LIS302DL byte deviceAddress this deviceAddress CLOCK Rate lt summary gt LIS302DL Triple Axis Accelerometer lt summary gt lt param name deviceAddress gt lt param gt lt param name clockRate gt lt param gt public LIS302DL byte deviceAddress Md Zaman InterHome Extension on Assisted Living BEng Final Year Project Report int clockRate 65 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report _deviceConfig new I2CDevice Configuration deviceAddress clockRate endregion region Members lt summary gt Device identification register This register contains the devi
33. currently a 304M market Retrieved April 11 2010 from http mobihealthnews com 5722 ctia wireless health currently a 304m market Md Zaman InterHome Extension on Assisted Living 57 University of 8 Hertfordshire School of Engineering and Technology BEng Final Year Project Report 47 Thompson D Miles Rob S 2007 Embedded programming with the Microsoft Micro Framewor Microsoft Press Chapter1 BIBLIOGRAPHY 1 Assisted living facility gets technology assist USA Today Web http www usatoday com tech news techinnovations 2006 07 05 elder tech x htm APPENDIX Programming Code Program cs using System using Microsoft SPOT using Microsoft SPOT Hardware using System Threading using DeviceSolutions SPOT Hardware namespace InterHomeMeriP public class Program private static RoomBoard rooml private static XBee xbee private static string text private static InterruptPort ipPanic public static void Main Debug Print Initialising rooml new RoomBoard 0 xb new 1 xbee DataReceived new XBee DataReceivedHandler xbee DataReceived new InterruptPort MeridianP Pins GPIO11 true Port ResistorMode Disabled Port InterruptMode InterruptEdgeHigh ipPanic OnInterrupt new NativeEventHandler ipPanic OnInterrupt StartTimer Debug Print Initialisation complete Md Ibna Zaman
34. in details Term Description Transmitter The device which sends data to the bus Receiver The device which receives data from the bus Master The device which initiates a transfer Generates clock signals and terminates a transfer Slave The device addressed by master Table 2 1 Device terminology in I C bus 22 Md Zaman InterHome Extension on Assisted Living 9 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report 2 5 NET MICRO FRAMEWORK In this project an embedded device is designed by using NET Micro Framework It does not require an operating system due to have features to operate like a subset of the operating system 47 The NET Micro Framework does not operate like traditional operating system and it was developed by Microsoft Research 47 It works as a bootable run time and its platform can also run in 32 bit processor 47 The NET Micro Framework gives user a flexible and powerful for creating an embedded device It is more applicable in small technology That s why it was known as SPOT Small Personal Objects Technology 47 The NET Micro Framework helps to write code more reusable way This can also extend and modify any existing code easily It has high level of tools and libraries which help to design the embedded device quickly The implementation system is very easy and more flexible Here the Meridian P is connected with other com
35. is connected with CTS pin of Meridian P Now the data is moving from Meridian P towards XBee This operation is shown in Figure 2 3 Here Pin 12 is a digital input output pin for XBee notified as CTS 25 It is connected with Pin 26 of Meridian P UART1 RTS Pin 16 RTS of XBee is connected with Pin 30 of Meridian P UART1 CTS Md Zaman InterHome Extension on Assisted Living 20 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report Additionally two leads are connected with Pin 13 and Pin 15 of XBee details are given in hardware implementation Section 4 1 3 2 4 POWER MANAGEMENT UNIT The designed wrist belt is portable which provides more independent and flexible movement for assistive residence So here offers charging system for rechargeable light weight Li lon battery The power management unit consists of DC DC converter charging unit and Li lon battery The rechargeable battery provides power for the microcontroller Meridian P The testing battery is 3 7V and energy storage capacity is 1230mAH Figure 3 8 shows the RECOM DC DC convertor Schematic of MCP73837 as well as IC placed on MSOP adaptor and schematic USB or AC DC adaptor MCP73837 DC DC Convertor 33 5 RECOM E Vac vusb 2 STATI 4 STAT 5 AC DC Adaptor Socket MSOP Adaptor 10 Pin Y PCB Manting MCP73837 Figure 3 8 a Schematic of DC DC convertor 36 b S
36. medical and other assistance to assisted people in their homes With the aid of modern technology make the home more comfortable and caring for elder people Aging populations will be benefitted from reduced costs and improved healthcare through assisted living based technologies These systems provide more usability reliability and security This is extensible system that combines software and hardware The system can also provide information to diverse clinicians on 24 hours based This report presents the system architecture for extension on assisted living that allows independent secure low cost and emergency detection for assistive people The approach is based on XBee communication system The designed device will send data to smart home system Additionally a server can be connected that collects and maintains assisted persons records The designed system shows the feasibility and new opportunity of an approach to assisted living systems 2 1 HOME AUTOMATION Home automation is becoming more popular around the world and is becoming a common practice The process of home automation works by making everything in the house automatically controlled using technology to control and do the jobs that would normally do manually 13 Nowadays home automation takes care of a lot of different activities in the house The term may be used in contrast to the more mainstream building automation which refers to industrial uses of similar technology part
37. of Hertfordshire School of Engineering and Technology BEng Final Year Project Report connections of 051624 The measurring temperature range is 55 C to 125 C 29 3 3V DC DS1624 Temp SDA DS1624 Sensor 1 SDA 5 5 Vcc SCL AD NC A1 GND 2 b Figure 3 4 a View of DS1624 b Schematic Pin outline of DS1624 29 c Connection of DS1624 Figure 3 4 shows that Pin 1and Pin 2 is notified SDA and SCL Both pins are used for 2 bus So Pin 1 is connected with Pin 20 of Meridian P and Pin 2 is connected with 22 of Meridian P Those pulled up with 47 resistor 8 is used for supply voltage so it is connected with Pin 3 of Meridian P The output voltage Pin 3 of Meridian P is 3 3V DS1624 operates in 2 8V to 5 5V 29 Pin 3 of this sensor is not connected and Pin 4 is connected with universal ground Pin 5 to Pin 7 those three pins are called address input pin 29 In this design all those pins are connected to ground The input output capacitance is 10pF and standby supply current is maximum 3pA 29 Operation of 2 bus and register operations for this sensor is given in section 4 2 1 and section 4 2 4 In Figure 3 5 shows the view pins outline and connection of LIS302DL To monitor the movement of the assisted residence the wrist belt is designed with 11530201 accelerometer It is an ultra compact low power less than 1mW three axis linear accelerometer 30 It i
38. pins remaining pin are not supported by NET Micro Framework 28 Meridas 2 E 5 2 TMS LCD Expansion J3 L AN 4 TCK v 6 TDI SPI MOSI 8 TDO GPIO1 10 TRST SPI MISO 12 GPIO11 GPIO2 14 GPIO12 SPI CLK 16 TMR20UT GPIO6 18 PWM 20 2 6 22 I2C SCL 24 UART1 TXD 26 UART1 RIS 28 UART1 RXD 30 UART1 CTS UART1 3 3 i m GPIO7 Resistors a B nm L GPI08 a USB B GPIO13 21 RESET OUT MOD RESET a b c Figure 3 3 a View of Meridian P b Available connection 28 c Schematic Pin notified Expansion 2 EXP2 of Meridian P 28 For this project design the device by using only expansion 2 EXP2 Other connections like LCD Expansion are not used The pin identification of EXP2 is shown in Figure 3 3 The pins are notified with blue colour those are used for designing Rest of the pins are in black colour those are not used so left open Powered 4 3V to 5V DC input voltage through USB port J1 to run Meridian P Maximum voltage of Input Output pin is 3 3V The typical power consumption of Meridian P is only 80mA and operating temperature ratio is 0 C to 70 C 28 Pin 3 gives 3 3V So this pin works as supply voltage for all devices Pin 4 is OV So in this design makes it universal ground for all connections Meridian P supports interfacing to device through the internal 2 bus m
39. used for design Rest of unused pins are connected in a separate hole So those pins can be used again for different and future applications Pin3 3 3 DC Pin 20 12 SDA m Pin 22 12 SCL XBee XBee Vcc am X ADO DIOO Dou 5 g 01001 H Din CONFIG 02 0102 pos LIT apaipio3 RESET 4 KE RTS AD6 DI06 Pin 24 UART TXD PWMO0 RSSI 3 Associate AD5 DIOS Pin 26 UART_RTS pau 7 Pin 28 UART RXD reserved 4 SLEEP PIRSICUME CTS DTR Sleep R DI8 cts Dio Pin 21 GPIO7 Pin 23 GPIO8 cup li apa pios in 5 ov 1 b c Figure 3 7 a View of XBee Module b Schematic and Pin identification 25 c Connection of XBee Md Zaman InterHome Extension on Assisted Living 19 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report XBee Module of Series1 is used in this device So it was configured from manufacture Series 2 needs manually configuration for operation but it provides more security Some specifications of XBee Modules have given in Table 2 2 The operation of this unit is based on data receiving and transmitting So both components are operating as a transmitter and a receiver The data out from XBee directly enters to Meridian P Similarly the data out from Meridian P directly goes to XBee Again the data sends towards
40. 00 07 211211114101 01 2004 00 00 07 y axis 21111252114101 01 2112551252123101 X axis z axis 2112521251114 211250125211121 22128112 2112531252113101 01 2 300 2112521253114101 0 211252125511410 250 211251125611 2112521255116 200 211252 125611510 2112521254113101 2112511254117101 150 21125313114101 01 211416116101 01 2004 00 100 50 0 rg Output 77 Locals gg Watch 1 1 3 5 7 9 11 23 15 17 19 21 0 Figure 5 6 a Data of falling towards left hand side in forward b Graph of the output The device is tested failing towards right in forward direction at the last observation of accelerometer Gy gets decreasing for right side movement of the body 34 The value of x axis goes HIGH due to rapid moving towards forward The y axis values decrease Md Zaman InterHome Extension on Assisted Living 45 University of Hertfordshire 8 d School of Engineering and Technology BEng Final Year Project Report as the device moves on right hand side All are shown in Figure 5 7 Similar to the rest 2 and 3 observations after few seconds the data remain stable So there is no extreme movement of the body after falling on the surface Output 2 Show output from Debug X x 201215114101 01 2004 00 06 14 004 00 06 15 X axis 00 06 15 00 06 16 y axis 00 06 16 06 16 Z AXIS 300 250 200 4 150 4 100 ooo
41. 624 Digital Thermometer and Memory Product Manual Retrieved February18 2010 from http datasheets maxim ic com en ds DS1624 padf 30 LIS302DL MEMS Motion Sensor Product Manual Retrieved April 4 2010 from http www st com stonline books pdf docs 12726 pdf 31 Serial Peripheral Interface SPIV3 Block Description Retrieved April 12 2010 from http www freescale com files microcontrollers doc ref_manual S12SPIV3 pdf 32 Sircar Sabyasachi 2008 Principle of Medical Physiology e book Thieme New York USA Available At http oooks google co uk books id zFI7y5xqHj4C amp log PA6 amp ots wvifbt q21 amp dq 22apparent 20acceleration 22 20 22g force 22 amp pg PA6 v onepage amp q 22apparent 20acceleration 22 20 22g force 22 amp f true Accessed 2 March 2010 33 G Force Retrieved April 10 2010 from http newton dep anl gov askasci phy99 phy99491 htm 34 Voshell M 2004 November 28 High Acceleration and the Human Body Retrieved April 12 2010 from http csel eng ohio state edu voshell gforce pdf 35 MCP73837 8 Product manual Retrieved March 15 2010 from http ww1 microchip com downloads en DeviceDoc 22071a pdf Md Zaman InterHome Extension on Assisted Living 56 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report 86 RECOM DC DC Convertor Product Manual Retrieved Match 16 2010 from http docs europe origin electrocomponents com webdoc
42. FF WU SRC 2 12CSlave ReadRegister deviceConfig LIS302DL REG FF WU SRC 2 dataBuffer timeOut return dataBuffer 0 public byte FF WU 5 1 set I2CSlave WriteRegister deviceConfig LIS302DL REG FF WU THS 1 value timeOut Md Zaman InterHome Extension on Assisted Living 68 University of Hertfordshire 8 School of Engineering and Technology BEng Final Year Project Report get I12CSlave ReadRegister deviceConfig LIS302DL REG FF WU THS 1 dataBuffer timeOut return dataBuffer 0 public byte FF WU 5 2 set I2CSlave WriteRegister deviceConfig LIS302DL REG FF WU THS 2 value _timeout get I2CSlave ReadRegister deviceConfig LIS302DL REG FF WU THS 2 dataBuffer timeOut return dataBuffer 0 public byte FF WU DURATION 1 set I2CSlave WriteRegister deviceConfig LIS302DL REG FF WU DURATION 1 value _timeOut I2CSlave ReadRegister deviceConfig LIS302DL REG FF WU DURATION 1 _dataBuffer timeOut return dataBuffer 0 public byte FF WU DURATION 2 set I2CSlave WriteRegister deviceConfig LIS302DL REG FF WU DURATION 2 value _timeOut I2CSlave ReadRegister deviceConfig LIS302DL REG FF WU DURATION 2 dataBuffer timeOut return dataBuffer 0 public byte CLICK
43. InterHome Extension on Assisted Living 58 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report static void ipPanic OnInterrupt uint datal uint data2 TimeSpan time bool GPIO 11 true fa while false be if ipPanic Read true GPIO Pinll GPIO Pinll Thread Sleep 500 Thrad used for time So it will stop for 500ms Debug Print DateTime Now ToString ipPanic Read ToString text DateTime Now ToString Debug Print Need Assistance xbee WriteData Need Assistance static void xbee DataReceived object sender XBeeDataReceivedEventArgs e Debug Print Received something private static void UpdateTick Thread Sleep 200 text rooml Temperature ToString rooml GetAccelerometerValue 0 ToString rooml GetAccelerometerValue 1 ToString rooml GetAccelerometerValue 2 ToString text DateTime Now ToString Debug Print text xbee WriteData text region Main thread Delegate type for the callback private delegate void VoidProcDelegate private static Thread TimerThread lt summary gt Starts the timer thread for the animation lt summary gt static void StartTimer TimerThread new Thread new ThreadStart TimerThreadProc TimerThread Start Md Zaman
44. InterHome Extension on Assisted Living 59 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report static void TimerThreadProc while TimerThread ThreadState ThreadState Running DispatcherOperation op Dispatcher CurrentDispatcher BeginInvoke new VoidProcDelegate UpdateTick op Wait Thread Sleep 100 endregion Md Zaman InterHome Extension on Assisted Living 60 University of Hertfordshire B School of Engineering and Technology BEng Final Year Project Report RoomBoard cs using System using System IO using Microsoft SPOT using Microsoft SPOT Hardware using System Threading namespace InterHomeMeriP public class RoomBoard fregion Drivers for on board devices internal sealed class DS1624 fregion Fields private I2CDevice Configuration config private I2CSlave slave private byte _deviceAddress private byte dataBuffer new byte 2 0x00 0x00 fendregion fregion Constants const int TIMEOUT InterHomeConfig I2C TIMEOUT const int BUS SPEED InterHomeConfig I2C BUS SPEED const byte DEFAULT Address 0x48 const byte REG IO 0x00 const byte REG MEMORY 0 17 const byte REG CONFIG OxAC const byte REG TEMP OxAA const byte REG START OxEE const byte REG STOP 0x22 fendregion fregi
45. REG CLICK TimeLimit dataBuffer timeOut return dataBuffer 0 public byte CLICK Latency I12CSlave WriteRegister deviceConfig LIS302DL REG CLICK Latency value timeOut I12CSlave ReadRegister deviceConfig LIS302DL REG CLICK Latency dataBuffer timeOut return dataBuffer 0 public byte CLICK Window I12CSlave WriteRegister deviceConfig LIS302DL REG CLICK Window value timeOut 12CSlave ReadRegister deviceConfig LIS302DL REG CLICK Window dataBuffer timeOut return dataBuffer 0 fendregion fregion IDisposable Members summary Dispose object lt summary gt public void Dispose fendregion private int address private DS1624 temp private LIS302DL accelometer private bool outputs private bool inputs public int Address get return address public int Temperature get return int temp Temp public bool Outputs get return outputs Md Zaman InterHome Extension on Assisted Living 71 University of Hertfordshire School of Engineering and Technology public RoomBoard int address address address _temp new DS1624 address _accelometer new LIS302DL BEng Final Year Project Report outputs new bool 8 inputs new bool 8 for inti 0 lt _outputs Length 144 _ou
46. Slave WriteRegister config REG START dataBuffer TIMEOUT H catch System IO IOException e t Debug Print e Message Figure 4 10 Code for inside the memory block of DS1624 In LISSO2DL Ctrl Reg3 register is mapped Read write mode and HP_Filter_Reset register is only Read mode Figure 4 11 shows that both statements are used for Ctrl Reg3 register and only get statement is used for HP Filter Reset register public byte Ctrl Reg3 set I2CSlave WriteRegister _deviceConfig L15302DL REG REG3 value timeOut get I2CSlave ReadRegister deviceConfig L13302DL REG REG3 dataBuffer timeOut return dataBuffer 0 public byte HP Filter Reset I2CSlave ReadRegister _deviceConfig L15302DL REG HP FILTER RESET dataBuffer timeOut return dataBuffer 0 Figure 4 11 Code for inside the memory block of LIS302DL Membpers his requires for dispose any objects It performs to release any allocated resources This method is not applied in this project DS1624 starts conversion at the register value of EE in hexadecimal 29 The measurement range for LIS302DL accelerometer is 20 to 80 30 But it depends the Full Scale FS selection the default of FS is 0 for acceleration range of 2g 30 If FS bit of the register sets to 1 then it measures acceleration at the range of 89 30 FS bit is used in REG1 This is 8 bit register and the
47. University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report BACHELOR OF ENGINEERING DEGREE WITH HONOURS IN ELECTRICAL AND ELECTRONIC ENGINEERING Final Year Project Report School of Engineering and Technology University of Hertfordshire INTERHOME EXTENSION ON ASSISTED LIVING Report By MD IBNA ZAMAN Supervisor JOHANN SAIU 14 April 2010 Md Zaman InterHome Extension on Assisted Living University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report DECLARATION STATEMENT certify that the work submitted is my own and that any material derived or quoted from the published or unpublished work of other persons has been duly acknowledged ref AS C 6 1 Appendix Section 2 Section on cheating and plagiarism Student Full Name MD IBNA ZAMAN Student Registration Number 07134530 apio e m Date 14 April 2010 Md Zaman InterHome Extension on Assisted Living University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report ABSTRACT This report describes the project work which is based on providing supervision for assisted living residence such as disable or elder people Here deals to build an embedded device for continuous monitoring their health condition movement and send data through wireless communication system to the service provider or smart h
48. acing automated techniques for integrating multi sensory data leading to an intervention strategy as well as preliminary clinical evaluation for management of patients with ischemic and arrhythmic heart disease called Cardiovascular disease 6 CodeBlue and Mercury are wireless sensor network for medical care Both are developed by Harvard University The applications of wireless sensor network technology to a range of medical applications including pre hospital and in hospital emergency care disaster response and stroke patient rehabilitation 3 Mercury includes long sensor node lifetime autonomous operation and the need for the system to automatically tune its behaviour in response to fluctuations in radio bandwidth and energy availability 4 An earlier version of Mercury v1 0 is used on the patient of Parkinson Motor neuron disease and Epilepsy Brain Disease 4 MIT researched on wireless blood pressure monitor system They have built a wearable blood pressure sensor that can provide continuous 24 hour monitoring 11 This device monitors patient high blood pressure and sends data through radio frequency It could help diagnose hypertension heart disease as well 11 Microsoft Corporation researched on HealthGear It is a real time wearable system for monitoring visualizing and analyzing physiological signals 12 It is set of non invasive physiological sensors which wirelessly connected via Bluetooth to a cell phone which sto
49. ard in second observation After few seconds the value of x axis is increased rapidly If the body moves forward then Gx increases 35 So the x axis gets high value for accelerometer The x axis value remains HIGH for long time as the observation time was long for slowly failing towards front The data and the graph shows in Figure 5 5 Md Zaman InterHome Extension on Assisted Living 44 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report Output vax Show output from Debug Xs 2112111151 2121011516 y axis 7 3X 300 250 4 200 4 150 100 50 4 0 135 7 9 1113 1517 19 2123 m 23 Error List zJ Output 7 Locals 27 Watch 1 a b Figure 5 5 a Data of falling towards forward b Graph of the output For third observation the designed device moves towards left hand side in front direction So the output data of x axis and y axis increase at a time Because the device moves forward so x axis remains HIGH As well as the device moves toward left hand side so y axis increases After few seconds x axis y axis and z axis all are remain stable shows in Figure 5 6 That means no fast movement So the device falls towards left hand side in forward direction and there is no rapid movement after falling Output y Show output from Debug X x has exited with code 0 0 0 211210114101 01 2004 00
50. aster or SPI Serial Peripheral Interface 28 But here choose 2 bus to connect with devices More information regarding I2C bus is given in section 2 4 So the sensors LIS302DL and DS1624 are connected with I2C bus To connect with this bus the device has to configurable with this bus by manufacture The base input frequency to the 12C bus is 96MHz 28 In 2 20 and Pin 22 are signalled as I2C SDA and I2C SCL Serial Md Zaman InterHome Extension on Assisted Living 15 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report Clock line SCL is used to clock data to the bus and Serial Data line for controller send or receive data on this line 28 If any of I2C or SPI bus does not use then that pins can be worked as input output pin In this design SDA and SCL both are pulled up with 47 resistors XBee is connected with UART Universal Asynchronous Receive Transmitters pins for data communication Meridian P has two UART pins Here using UART1 of EXP2 Both UART 1 and UART2 are available serial ports COM1 and COMO2 under the NET Micro Framework 28 In this design using all the UART pins of EXP2 The connections between URAT pins and XBee are given in details in Section 3 2 3 There are four UART pins are available in Meridian P EXP2 A brief description and pin location is given in Table 3 1 Signal Pin Location Description UART1 TXD EXP2 Pin
51. by old and disable person By using this the person gets care in home environment It provides more independence and flexibility as well There are many patients who are suffering from long term health condition They are hospitalised due to 24 hours monitoring But they can be monitored by using assistive technology Approximately 3096 of assisted living residences suffer from long term health condition and 72 are inpatient bed days 44 This technology is also applicable for the patients who stay in bed for long time So the doctor can checked update health data of the patient with the help of technology The assistive technology helps to provide more home based care So it helps to reduce the cost This project has carries a vital role for community Many old people are lived alone in their home Their health can be motored continuously by using this assistive technology According to Age Concern organisation 11 of aged 65 or over are live always lonely and aged 75 and over living alone will increase by over 40 in UK next 20 years 45 This device is also suitable for care home service provider They can monitor multiple patients by using this technology at the same time In care home many patients suffer from different motor neuron diseases So they are immobile and some have problem in speech Their movement can be monitored by using this device This is wireless device so they feel more independence and secure The market ability of
52. ce identifier for LIS302DL set to 3Bh lt summary gt public byte Who Am I get I2CSlave ReadRegister deviceConfig LIS302DL REG WHO AM I dataBuffer timeOut return dataBuffer 0 public byte Ctrl Regl I2CSlave WriteRegister deviceConfig LIS302DL REG CTRL value timeOut get 12CSlave ReadRegister deviceConfig LIS302DL REG CTRL REG1 dataBuffer timeOut return dataBuffer 0 public byte Ctrl Reg2 set I12CSlave WriteRegister deviceConfig LIS302DL REG CTRL REG2 value timeOut 12CSlave ReadRegister deviceConfig LIS302DL REG CTRL REG2 dataBuffer timeOut return dataBuffer 0 public byte Ctrl Reg3 set Md Zaman InterHome Extension on Assisted Living 66 University of Hertfordshire B School of Engineering and Technology BEng Final Year Project Report I2CSlave WriteRegister deviceConfig LIS302DL REG CTRL REG3 value timeOut get I12CSlave ReadRegister deviceConfig LIS302DL REG CTRL REG3 dataBuffer timeOut return dataBuffer 0 public byte HP Filter Reset get I2CSlave ReadRegister deviceConfig LIS302DL REG HP FILTER RESET dataBuffer timeOut return dataBuffer 0 public byte Status Reg get I2CSlave ReadR
53. chematic of MCP73837 35 USB and AC DC adaptor socket Charging unit is designed with the base on the MCP73837 MCP73837 is battery charging IC with variable voltage regulation range 4 2V to 4 5 and the supply voltage of this is 6V 35 It works as a charge management controller which integrated autonomous power selection and reverse discharge protection 35 Autonomous power selection means it has auto selection mode of power source By using this IC battery can be charged through USB port or AC Dc adaptor When both are connected then it will automatically take power from adaptor Temperature range of this IC is 40 C tO 85 35 Here using 73837 dimension of 3 mm by 3 mm MSOP 35 It is very small To design on the breadboard this chip is attached on MSOP adaptor shows in Figure 3 8 b Schematic of Power Management Unit is shown in Figure 3 9 which includes Dc DC convertor and power source options USB and Adaptor Md Zaman InterHome Extension on Assisted Living 21 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report Meridian P USB mini B wer y xD sy Pin 5 Meridian P 0V M Manu 5v 4M lin ite Figure 3 9 Schematic of whole Power Management Unit Pin 1 is connected with USB port and Pin 2 is connected with AC DC adaptor socket Both are connected with a capacitor 4 7uF with ground 35 The capacitor
54. e device provides more security as well The designed system has the potential to reduce additional health care service costs by facilitating more efficient use of health care technology So the commercial aspects and future recommendation are included in this chapter in Section 7 1 and Section 7 2 7 1 COMMERCIAL AND SOCIAL ASPECTS This project has many commercial and social aspects A large amount of world population will be grown older near future According to Technology Strategy Board UK more than a third of the world population will be over 65 by 2050 42 Different surveys have done to alarm about the increase rate ageing people The European Commission has predicted that the UK will see about 4496 increases in the 60 and over age range between 1995 and 2025 9 According to Office for National Statistics UK there were 1 3 million people aged 85 and over in the UK in 2007 that is predicted to be 3 1 million by 2032 43 So it will be hard to assure good health service with the growth rate of elder people Nowadays modern technology is utilised in health sector to provide better service in Md Zaman InterHome Extension on Assisted Living 51 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report home This project is for providing health monitoring service from home This device is designed with concept of 24 7 health monitoring for assistive residences This wrist belt can be used
55. e footprint is added with component and shows on the Component Properties Window Draw the exact size of the PCB board This step is to insert the circuit design on PCB Click Home Printed circuit Board Design gt gt Documents Wizard Then PCB Documents Wizard window appears Here using metric unit so select Metric Select Custom gt gt Rectangle as in this project designing rectangle shape device There are different shapes in the custom option The size of rectangle modifies Then select Next The window shows Single and Power Line selects 2 and Thruhole selects Two track As in this design using PCB of two layers Then select Next gt gt Finish So the comes with green colour rectangle Insert the whole schematic diagram on the PCB Board After that transfers the schematic diagram into the PCB Now selects schematic diagram window then clicks Design Update PCB doc A window appears which shows the connections of all components then selects Execute Changes It takes few seconds for executing Footprint of all components with connection appears in the PCB window Then the components are dragged in the green colour PCB board If all connects are correct then it converts in brown colour The dimension of Meridian P is 38mm x 38mm So PCB of the proposed wrist belt is based on this dimension This proposed PCB will be connected on the top of Meridian P Md Zaman InterHome Extension on Assisted Living 29
56. eech So they can call for assistance by pressing that button The detail is explained in section 3 2 2 All components are connected and controlled by Meridian P microcontroller An XBee is connected with the wrist belt and another one is connected with existing Smart Home system InterHome Both XBee will make a wireless mesh network for data transmission The whole operation of the system is shown in Figure 3 1 Md Zaman InterHome Extension on Assisted Living 12 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report Main Server amp Database InterHome XBee Modules GSM GPRS PDA Mobile Phone Assisted Living Centre amp Emergency Service Smart Home System InterHome Figure 3 1 System Operation of Wrist Belt and existing Smart Home System InterHome Figure 3 1 shows that an assistive residence of existing InterHome wearing the designed wrist belt The belt is build with XBee Module It communicates with another XBee Module which is connected with InterHome The wrist belt sends data to the InterHome system The InterHome device will send data toward Main Server and Database The main server sends data again to the assistive living monitoring centre and emergency service So monitoring centre can monitor the assisted residence on 24 hours basis If any problem occurs then they can provide quick emergency service On other hand the main server can be connected
57. egister deviceConfig LIS302DL REG STATUS REG dataBuffer timeOut return dataBuffer 0 public byte OutX get I2CSlave ReadRegister deviceConfig LIS302DL REG OUTX dataBuffer timeOut return dataBuffer 0 public byte OutY I2CSlave ReadRegister deviceConfig LIS302DL REG OUTY dataBuffer timeOut return dataBuffer 0 public byte OutZ get I2CSlave ReadRegister deviceConfig LIS302DL REG OUTZ dataBuffer timeOut return dataBuffer 0 Md Zaman InterHome Extension on Assisted Living 67 University of Hertfordshire 8 School of Engineering and Technology BEng Final Year Project Report public byte FF WU CFG 1 set I2CSlave WriteRegister deviceConfig LIS302DL REG FF WU CFG 1 value timeOut get 12CSlave ReadRegister deviceConfig LIS302DL REG FF WU 1 dataBuffer timeOut return dataBuffer 0 public byte FF WU 2 set I2CSlave WriteRegister deviceConfig LIS302DL REG FF WU CFG 2 value timeOut 12CSlave ReadRegister deviceConfig LIS302DL REG FF WU 2 dataBuffer timeOut return dataBuffer 0 public byte FF WU SRC 1 get 12CSlave ReadRegister deviceConfig LIS302DL REG FF WU SRC 1 dataBuffer timeOut return dataBuffer 0 public byte
58. eration of this unit is shown in section 3 2 4 All the components work altogether in the wrist belt I2C Bus Power Management Accelerometer LIS302DL Temperature Sensor DS1624 XBee Modules Panic Button Figure 3 2 Block diagram of the wrist belt 3 2 SYSTEM DESIGN The design of wrist belt is based in four units Those are given below Microcontroller Unit Sensors Unit Communication Unit v V Vv WV Power Management Unit This section all units are explained with schematic diagram and finally attached all units altogether to design the whole embedded device 3 2 1 MICROCONTROLLER UNIT Meridian P For this project Meridian P Micro Development Board is used as microcontroller This is the nucleus of this project Sensors XBee Power Management Unit are connected Md Zaman InterHome Extension on Assisted Living 14 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report with this The whole device is designed on the base of Meridian P Meridian P is combined with a 100MHz Freescale i MXS ARM920T based processor 8MByte of SDRAM running at 96MHz LCD controller USB function GPIO SPI and 2 bus and serial port 28 The operating voltage is 5V It runs on NET Micro Framework 28 So for programming use in NET Micro Framework Meridian P has total 27 pins available for use as general purpose input output pins but 19 of those pins are labelled as GPIO
59. health monitored technology is very high According to The Wireless Association CITA the current market for home based wireless health care product in USA is 304 million and the market is expected to grow to 4 billion next 3 years 46 The future market of this type of product is wide Different companies and organisations are still working to develop in various products related this area The home based health monitor technology type product of would be used widespread near future Md Zaman InterHome Extension on Assisted Living 52 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report 7 2 FUTURE DEVELOPMENT Here proposed a wrist belt which monitors only movement and temperature The designed device has successfully sends data to the receiver In the market only one product can do only single task But here this single device is doing multi tasks The device is using 2 bus which is multi master bus In future more sensors can be added with this I2C bus Such as blood pressure sensor pulse oximeter or heart beat monitor sensor etc By doing this one device can measure different health related data at the same time This device can be used in care home service in future So the same device will be used among many users The device transmits data through XBee network So the next step would be worked for multi users If the device is used in care home basis then multiple patient
60. icularly the automatic or semi automatic control of lighting doors and windows heating Md Zaman InterHome Extension on Assisted Living 6 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report ventilation and air conditioning and security and surveillance systems 14 Home automation technique can be applied in the control of home entertainment systems houseplant watering and kitchen applications There are four types of home control system named power line carrier system wireless system and hardwired system and IP control 15 Power line carrier system is X10 based system It operates through existing wire lines Wireless system is based on the data transmission through radio frequency technology Hardwired system introduces systems which can operate over high grade communications cable IP control means that house operates like its own secure Internet via a Web server or a computer network 15 For this project wireless system is used but IP Internet Protocol control system can be applicable in future application Now home automation focuses on making home for the elderly and disabled more safe and comfortable Here using home automation system to monitor their daily activities This system provides more options for the assistive people who would prefer to stay in the comfort of their homes rather than move to a healthcare facility Home automation is being implemented for assistive
61. ifferent axis In this section the output of the device is analysed The measurements of LIS302DL DS1624 describe in this section The accelerometer measures the movement according to x axis y axis and z axis The G force can be found in three position of the body Gx is the movement for front to back Gy is for side to side and Gz is for head to toe 34 Gz Gz i Gy m e G m ED cx gt Gz Gz Vertical b Transverse Figure 5 3 a Direction of G force of body in vertically b Direction of G force in transversely 34 Figure 5 3 a shows that Gy varies side to side vertically If the body moves towards left hand side then Gy is positive 34 That means Gy is increasing If it moves right hand side then Gy is negative It means theat Gy is decreasing Figure 5 3 b shows that Gx changes front to back in transverse way of the body movement It increases if body moves forward 34 Gz is common in both Figures It varies in the movement of head to toe Gz changes from high and low at the time of the body moving towards the space 32 So here the LIS302DL accelerometer gets data in Gx Gy and Gz according to the movement of body By pressing F5 in Microsoft Visual Studio 2008 debugs the whole programming code The output box shows the output of the system All data come out together Then the designed device moves in different directions Md Zaman InterHome Exten
62. ing heart failure patients and reducing hospital readmissions 8 CardioNet provides a remote heart monitoring system where ECG signals are transmitted to a PDA Personal Digital Assistant and then routed to the central server by using the cellular network 5 1 3 AIMS AND OBJECTIVES The main aim of this project is to design a device which helps assisted living by sending data such as heart beat pulse reading blood pressure temperature or movement etc through various data transmitting media named Wi Fi Bluetooth Inferred Radio Frequency or power transmission line etc Design sensors networking and embedded device which have made it feasible to monitor and provide medical and other assistance to people in their homes The designed device aims to send data to the existing Smart Home System InterHome Md Zaman InterHome Extension on Assisted Living 3 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report The main object can be divided into two parts First part is to work on hardware and second part is software gt Choose particular sensor and connection media for those Here choose the LIS302DL accelerometer for movement monitoring and DIS1624 temperature sensor Both sensors are connectable with 12 and SPI Here sensors are connected with I C Bus of Meridian P microcontroller The details explanation 12 and Meridian P is give in section 2 4 and 3 2 1 g
63. is not used This pin is very essential If this pin is connected with ground then the battery would not be charged As the supply voltage drains quickly As there is an internal current source for biasing and the thermal resistor range is 2 to 50 35 in this design Pin 9 is connected with 22 resistor Pin 10 is for Li lon battery and ensures to connect with a minimum of 1uF by pass to Pin 5 for loop stability at the time of the battery disconnection 35 So Pin 10 is connected with positive side of battery and pulled down with 4 7uF for loop stability The output voltage of Li lon battery is approximately 3 75V But Meridian P operates in 4 3V to 5V and requires 80mA current as well as it is powered by USB mini B 28 So here use DC DC step up convertor RECOM Using RECOM model number ROXX05S which converts 3 3V DC to DC and output current is 200mA 36 Schematic diagram and pins notification of RECOM are shown in Figure 3 8 a Pin 1 is and Pin 3 is Vout So both pins are connected with ground Pin 2 is 4 Vin and Pin 4 is Vout The output from battery 3 75V DC is connected with Pin 2 4 Vin So Pin 4 4 Vout gives minimum 5V Dc output voltage which is connected with Vcc wires of Meridian P USB mini B red colour The wires for data are not being used So the ground of Meridian P USB mini B Black colour connects with universal ground So the wrist belt runs with rechargeable battery and works as a
64. is valid till the data line remains HIGH of the duration of clock signal 30 Unlimited data can be transferred after START condition till STOP but itis specified by the master device The bus can transfer data in two modes explained in Section 2 4 Those are called regular mode 100Kbit s and fast mode 400kbit s 22 Here the sensors can run transfer in both mode but selects regular mode 100Kbit s for both sensors Md Zaman InterHome Extension on Assisted Living 39 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report After receiving data the receiving device generates an acknowledgement It is compulsory to transfer data with acknowledge 30 During the acknowledge pulse the transmitter release the data line The data line stables LOW at the HIGH period of acknowledgement related clock signal 30 When stops generating acknowledge bit on the last byte then the master sends notification of the data ending 30 The slave makes the data line form LOW to HIGH and the master initialises STOP condition 30 4 2 5 SERIAL PORT Here using standard serial port COM1 in NET Micro Framework XBee communicates by using serial port pubiic static void Main t Debug Print Initialising rooml new RoomBoard 0 xbee new XBee COM1 xbee DataReceived new XBee DataReceivedHandler xbee DataReceived Figure 4 17 Code written in main function declares XBee
65. left from control byte The last three bits are called device select bits A2 A1and AO 29 The last bits can perform Read and Write operation When last bits are 1 then it works as Read operation and 0 for Write operation 29 Here the last bits set all 0 Default address for 051624 is 01001000 in binary So the number converts in Hexadecimal It is 48 The all register values for 051624 insert in constant shows in Figure 4 9 a DS1624 LIS302DL region Constants const int CLOCK Rate 100 const byte DEFAULT Address Ox1C const byte REG WHO_AM I Ox0F const byte REG CTRL REG1 0x20 region Constants const byte REG CTRL REG2 0x21 const byte REG CTRL 0x22 const int TIMEOUT InterHomeConfig I2C TIMEOUT const byte REG HP_FILTER_RESET 0x23 const int BUS SPEED InterHomeConfig I2C BUS SPEED byte RES STATUS REG 0x27 const byte DEFAULT Address 0x48 Byte HEC ONDE ness const byte REG IO Ox00 const byte REG OUTY 0x2B const byte REG MEMORY 0x17 const byte REG QUIZ Dx2D const byte REG CONFIG OxAC const byte REG FF WU 1 0x30 const byte REG TEMP OxAA const byte REG FF WU SRC 1 0x31 const byte REG START OxEE const byte REG FF WU THS 1 0x32 const byte REG STOP 0x22 const byte REG FF WU DURATION 1 0x33 const byte REG FF WU 2 0 34 endregion const byte REG FF WU SRC 2 0x35 const byte REG FF WU THS 2 0x36 const
66. living in order to offer more independence and safety 2 2 SMART HOME The home which is operating through automated system is called Smart Home Smart Home designs in the concept of Home Automation The main idea of home automation is to employ sensors and control systems to monitor a dwelling and accordingly adjust the various mechanisms that provide heat ventilation lighting and other services 17 In Figure 2 1 shows a house is in the concept of Smart Home where every system is control and monitoring By definition a dwelling incorporating a communications network that connects the key electrical appliances and services and allows them to be remotely controlled monitored or accessed 18 This can provide more control and security in different home applications It provides services in six main areas environmental security home entertainment domestic appliances information and communication and health care 18 The assistive people can be monitored 24 hours basis in homely environment Smart home system provides medication reminder health monitoring indication of any emergency situations like fallen 18 Md Zaman InterHome Extension on Assisted Living 7 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report solar electricity and water heating renewable energy weeless interface w audio visual complete wireless control and monitoring Figure 2 1
67. lized in individual patient home or care home system So the service providers can monitor a number of patients at a time Nowadays the care home service providers are using assistive living technology for providing better service The sensor network system integrates into a device Some wearable on the patient and some placed inside the living space such as bed wall etc They together inform the healthcare provider about the health status of the resident Data is collected aggregated pre processed stored and acted upon using a variety of sensors and devices Data can be sending through power line radio frequency RF Wi Fi inferred or Bluetooth etc Md Zaman InterHome Extension on Assisted Living University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report 1 2 RELATED WORKS With the population is growing older the demand for healthcare is growing rapidly To meet the demand for more healthcare people are starting to look for new healthcare technology in less expensive way Healthcare for elderly people is a huge area with lots of potentials So many universities and companies are doing different kind of research within the area Imperial Collage of London has developed UbiMon It is aimed at addressing general issues related to using wearable and implantable sensors for distributed mobile monitoring 6 UbiMon is a designed device for wearable communicator performing multi sensor interf
68. logy BEng Final Year Project Report 1 4 PROJECT FEASIBILITY Before working on this project the feasibility report is generated That carried out to determine the working stages outline design proposal in terms of software and hardware requirements to handle the completion of the project Due to recent advances in sensor networks and embedded technologies designed health monitoring devices have become practically feasible 1 5 REPORT GUIDELINE This report provides information on the design and development of assistive living device A brief outline of the report is given below Chapter 1 This chapter introduces with assisted living technology and project background Some related research from different universities and companies as well as aims and objectives also discussed It includes the brief description of the organisation of report and project feasibility Chapter 2 All background information which is related with this project has been discussed in this section It covers home automation InterHome NET Microframework ZC Bus and XBee communication system Chapter 3 This chapter discusses on whole system overview and design Here shows how the project is designed and forwarded to the development Also include block diagram of the project and the schematic diagram of the design Design of each part has been explained in this section The connections between Meridian P and all other components are shown here The components inc
69. lude sensor unit communication unit and power management unit Chapter 4 Discussed on hardware and software implementation in this section PCB design and Breadboard design are introduced in hardware implementation The programming code of each component and whole system is explained in software implementation section Chapter 5 The output result is analysed in this chapter The output from accelerometer and temperature sensor is discussed Analysis of the result is explained in different situations Md Zaman InterHome Extension on Assisted Living University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report Chapter 6 Project management is very essential part in project handling Time management resource analysis and risk assessment have been briefly discussed in this chapter Chapter 7 This chapter concludes the whole project work Here discuss on the aims that are given in section 1 3 Also evaluates if any additional objective is done for project work Commercial aspects of assistive living technology are discussed in this chapter Future development and recommendations are provided here for more useful applications 2 SUBJECT REVIEW Due to high increase the number of aging population expresses that the automatic home monitoring will represent major challenge near future Advances in communication system sensors and embedded devices have made possible to monitor and provide
70. m http www housingcare org downloads kbase 2334 pdf 10 Innovative GPRS UMTS mobile services for applications in healthcare Retrieved April 2 2010 form http www mobihealth org Md Zaman InterHome Extension on Assisted Living 94 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report 11 Asada Harry 2009 April 8 Wearable blood pressure sensor offers 24 7 continuous monitoring Retrieved December 16 2009 from http web mit edu newsoffice 2009 techtalk53 21 pdf 12 Oliver N amp Fernando Flores Mangas HealthGear A Real time Wearable System for Monitoring and Analyzing Physiological Signals Retrieved April 5 2010 from ftp ftp research microsoft com pub tr R 2005 182 pdf 13 Home Automation Retrieved April 5 2010 from http nome automation org 14 Home Automation In Wikipedia Retrieved March 28 2010 from http en wikipedia org wiki Home automation Architecture 15 Home Automation Retrieved April 6 2010 from http www esl usa com home automation html 16 Figure 2 1 Smart Home Retrieved April 6 2010 from http www ciseco co uk images house jpg 17 Gross Mark D Smart House and Home Automation Technologies Retrieved April 9 2010 from http depts washington edu dmgftp publications pdfs smarthouse98 mdg pdf 18 King N September 2003 SMART HOME A DEFINATION Retrieved April9 2010 from http Awww housingcare org dow
71. namespace InterHomeMeriP public class Program t private static Ro private static XB private static st private static public static void Main t Debug Print Initialising rooml1 new RoomBoard 0 xbee new XBee COM1 xbee DataReceived new XBee DataReceivedHandler xbee DataReceived ipPanic new InterruptPort MeridianP Pins GPIO11 true Port ResistorMode Disabled Port InterruptMode InterruptEdgeHigh ipPanic OnInterrupt new NativeEventHandler ipPanic OnInterrupt StartTimer Debug Print Initialisation complete Figure 4 14 A part of code for embedded device in Progarm cs Figure 4 15 shows the output code is written The output comes out in text First it shows the temperature then the value of x axis y axis and z axis of the accelerometer It prints on during debugging as well as it shows in text on the receiver The received data from the device is shown and analysed Section 5 2 Md Ibna Zaman InterHome Extension on Assisted Living 38 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report static void xbee DataReceived object sender XBeeDataReceivedEvent rgs Debug Print Received something private static void UpdateTick Thread Sleep 200 text rooml Temperature ToString rooml GetAccelerometerValue 0 ToString rooml GetAccelerometerValue 1 ToString rooml GetAccelerometerValue
72. nloads kbase 2545 pdf 19 Craven J What Is a Smart House Retrieved April 9 2010 from http architecture about com od buildyourhous1 g smarthouse htm 20 Siau J Chen C Percival E InterHome Retrieved April 10 2010 from http interhome herts ac uk 21 l2C Bus Retrieved April10 2010 from http www i2c bus org 22 The I2C Bus and how to use it including specification Retrieved March 30 2010 from http www datsi fi upm es docencia Micro C i2c pdf 23 UM1024 I2C bus specification and user manual Retrieved April 10 2010 from http www nxp com documents user_manual UM10204 paf Md Zaman InterHome Extension on Assisted Living 55 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report 24 History of I2C interface Retrieved April 11 2010 from http www lammertbies nl comm info I2C bus html 25 XBee XBee PRO OEM RF Modules Product Manual v1 06 Retrieved October 30 2009 http www rev ed co uk docs xbe001 pdf 26 IEEE 802 15 4 2006 In Wikipedia Retrieved April 4 2010 from http en wikipedia org wiki IEEE 802 15 4 2003 27 Sklar B 2001 Digital Communications Fundamentals and Applications Prentice Hall 2 Edition Sections 12 1 12 4 28 Meridian P Technical Reference Manual Retrieved March 30 2010 from http devicesolutions net Portals 0 Download Documents Meridian P 20Technical 20Reference 20Manual pdf 29 DS1
73. old Swafford Bob amp Terry Stephen April 1997 MEMS in the Medical World Retrieved October 25 2009 from http archives sensorsmag com articles 0497 medical main shtml 2 Jones P M 2009 January 19 Assisted Living A Brief History and Definition Retrieved March 23 2010 from http ezinearticles com Assisted Living A Brief History and Definition amp id 1898892 3 CodeBlue Wireless Sensors for Medical Care Retrieved March 23 2010 from http fiji eecs harvard edu CodeBlue 4 Mercury A Wearable Sensor Network Platform for High Fidelity Motion Analysis Retrieved March 23 2010 http fijiieecs harvard edu Mercury b Ross December 2008 Managing Care Through the Air Retrieved April 1 2010 from http www cs indiana edu surg pervasive class_materials ManagingCareThroughtheAir 6 Ubiquitous Monitoring Environment for Wearable and Implantable Sensors Retrieved April 1 2010 from http www doc ic ac uk vip ubimon home index html 7 Telemedicine Archive Retrieved March 24 2010 from http www medgadget com archives telemedicine 8 Piix Wireless Home Cardiac Monitoring to Undergo Randomized Trial 2009 June 25 Retrieved March 20 2010 from http medgadget com archives 2009 06 wireless home cardiac monitoring to underg randomized trials html 9 Porteus J amp Brownsell S 2000 Exploring Technologies for Independent Living for Older People Retrieved April 3 2010 fro
74. ology BEng Final Year Project Report Assista 38 2 Figure 5 10 Data transmission in running session of PuTTY by using COM4 The display window of PuTTY is normally in black colour But Figure 5 10 is inverted for clear observation CH 6 PROJECT MANAGEMENT Proper project management requires to progress for a project This chapter focused on project time management resource analysis and risk assessment At first made an effective project plan Literature search was done at the beginning of the project Then researched on the require components After that a paper based design was made The design implemented on the breadboard So the hardware design can be modified Some modifications have done The programming code applied on hardware design after working on the programming Then whole designed device was tested 6 1 TIME MANAGEMENT Time management is essential in project The Project plan is made on the consideration of components ordering Testing is very time consuming part of the project In every step of progress is checked So the project is tested at the time of designing and implementation Sometime many components require extra time to receive In that time the project is progressed by developing another area Some allocated tasks are worked at a time The proposed project plan is shown in Figure 6 1 with the based on working days Md Zaman InterHome Extension on Assisted Living 49 University of
75. ome device On the base of this project proposed a wearable wrist belt for 24 hours patient monitoring service This report indicates the working stages undertaken to design development and implementation of the device It also provides the workout on project management including project time plan and resource analysis Finally the report highlights the commercial aspects product marketability and future development for more successful implementation in different areas of assistive living Md Zaman InterHome Extension on Assisted Living University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report ACKNOWLEDGEMENTS would like to thank my supervisor Mr Johann Siau for his guidance and assisted me during the whole project During my project when lost the way he gave me proper direction of progress Once again would like to thank him for his moral support and giving me his valuable time as well as encourage me to work best would like to thank Mr John Wilmot and Mr lan Munro for their logistic support as well as the School of Engineering and Technology for funding on this project Finally would like to thank my parents and my friends for their support Md Zaman InterHome Extension on Assisted Living iii University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report TABLE OF CONTENTS DECLETATION 65
76. ome components are not available in Library Browser So need to design the schematic for those components Design schematic for new component Right click on Project Name then selects Add New To Project then Schematic Library Then click Tool gt gt New Components A dialogue box appears there write down the name of the component Draw a rectangle by clicking Place gt gt Rectangle Then add require pins with the rectangle by clicking Place gt gt Pin This will save on PCB Project under Schematic Library Document by clicking File gt gt Save gt Add new designed component in Library Browser The design component requires adding to the Library The components can be added by selecting Design Browse Components The Library Window appears on the screen Click on Search on then Library Search Window opens Then mark on Library Path Gives direction of the path where the component is saved Then click on Search Finally all comments of the path appear in Library Browse So drag and add on schematic sheet Design the Footprint for the new component Footprint design of the component is essential for designing PCB Without footprint PCB cannot be designed Footprint shows on PCB Design new footprint for new component by right clicking on Project name then Add New to Project gt gt Library A blank PCB library Window appears Select Tool gt gt Component Wizard then PCB Component Wizard Box comes out Here using DIP IC
77. on Constructors summary DS1624 default address summary public DS1624 this DS1624 DEFAULT Address public 51624 deviceAddress config new I2CDevice Configuration byte DEFAULT Address deviceAddress BUS SPEED lt summary gt DS1624 Temperature Monitoring lt summary gt Md Zaman InterHome Extension on Assisted Living 61 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report param name deviceAddress gt lt param gt public DS1624 byte deviceAddress config new I2CDevice Configuration deviceAddress BUS SPEED deviceAddress deviceAddress this slave new I2CSlave deviceAddress fendregion region Members public byte StartConversion SEE cry using I2CSlave slave new I2CSlave deviceAddress _slave WriteRegister DS1624 REG START dataBuffer I2CSlave WriteRegister config REG START dataBuffer TIMEOUT catch System IO IOException Debug Print e Message public byte StopConversion Sec using I2CSlave slave new I2CSlave deviceAddress Slave WriteRegister DS1624 REG STOP dataBuffer I12CSlave WriteRegister config REG STOP dataBuffer TIMEOUT catch System IO
78. ooooooo v Hh 50 2004 0 1 3 5 7 9 1113 15 17 19 21 23 4 Error List Output 77 Locals 27 Watch 1 a b Figure 5 7 a Data of falling towards right hand side in front way b Graph of the output From these observations it is identified temperature falling and movement of the user of this proposed wrist belt 5 2 2 OBSERVATION OF PANIC BUTTON Panic button is connected with a GPIO pin of Meridian P This button is used for asking help When the button is pressed then the system is interrupted The system sends data for this interruption If the button is touched by no means the system will not be interrupted So it can not send data for asking help For asking assistance the button needs to hold for few second After pressing the button it shows on the output window in Figure 5 8 Md Zaman InterHome Extension on Assisted Living 46 University of Hertfordshire d School of Engineering and Technology BEng Final Year Project Report Output Show output from Debug Initialising Initialisation complete The thread 0 1 has exited with code 0 0 0 241212115101 01 2004 00 00 03 241212114101 01 2004 00 00 03 241212115101 01 2004 00 00 03 241212114101 01 2004 00 00 04 241212115101 01 2004 00 00 04 241211114101 01 2004 00 00 04 241211114101 01 2004 00 00 05 01 01 2004 00 00 05 True Need Assistance 241212114101 01 2004 00 241212116101 01 2004
79. ows the view of proposed panic button schematic diagram and the connections with Meridian P Md Zaman InterHome Extension on Assisted Living 18 University of Hertfordshire B School of Engineering and Technology BEng Final Year Project Report f Pin3 3 3v DC Panic Button Pin12 GPIO11 SW PB GND a b c Figure 3 6 a Proposed panic button b Schematic of Panic Button c Connection with Meridian P Panic button works as a switch When panic button is pressed then it makes interruption in the whole system and notified to the InterHome by sending data that assistance is required It has two pins One pin is connected with ground and another pin is connected with Pin13 GPIO11 of Meridian P pull up with 47 resistor The programming of this panic button given in Section 4 2 2 and the output of panic button is shown in Chapter 5 in Section 5 2 2 3 2 3 COMMUNICATION UNIT This unit works only in data transmission operations The wrist belt is designed with XBee Module for communicating with InterHome It is connected directly with Meridian P microcontroller The sensor unit sends data to the Meridian P and it sends data to Smart Home device through XBee The XBee communication system has been explained earlier in Section 2 6 Figure 3 7 shows the schematic and pin outlines of XBee as well as the connections with Meridian P The pins are notified with blue colour means those pins are
80. part provides the project background some related works aims and objectives as well as chapter guideline of the report 1 1 PROJECT BACKGROUND Assisted living residences are referred to as who requires assistance for daily living activities Additionally the residence frequently is coordinated with third party healthcare and service providers on the resident s behalf Assisted living emerged in the 1990 s as the next step of continuing care for people who cannot live independently in a private residence but who also do not require the 24 hour medical care provided by a nursing home 2 The implementation of assisted living technology exists today since 1980s when microelectromechanical systems MEMS have been used in the medical industry for a variety of silicon pressure accelerometer and custom microstructure applications 1 As the world s population ages those suffering from diseases of elderly and disability are increasing day by day So the raising healthcare costs and the increasing elderly population are placing a strain on current health care service Elderly patient and disable especially those with chronic conditions requires long term monitoring By using modern home automation system provides those 24 hours monitoring and continuous care in home environment Different wearable sensors build a sensor network in the device for measuring various data and send to receiver by using wireless communication This system can be uti
81. ponents The programming for this project is written in C in NET Micro Framework platform 2 6 XBEE COMMUNICATION SYSTEM For this project work build a wireless network by using XBee Modules The XBee and XBee PRO Modules were engineered to meet IEEE 802 15 4 standards and support the unique needs of low cost low power wireless sensor networks 25 IEEE 802 15 4 provides a physical layer of low rate wireless personal area networks LR WPAN 26 This is used due to the lower cost than other wireless communication system XBee or XBee PRO RF Modules has ISM Industrial Scientific amp Medical frequency band of 2 4GHz 25 It operates in low operating voltage It provides more security by using Direct Sequence Spread Spectrum DSSS Spread Spectrums transmit much larger bandwidth than the information bandwidth through the channel 27 Each direct sequence channels has over 65 000 unique network addresses available in XBee coomunication 25 Here for wrist belt using XBee modules of Series1 The device is designed with XBee So it will transmit data to another XBee of the exiting Smart Home system The key difference between the XBee and XBee PRO is distance of data transmission XBee Pro has long distance of data transmission XBee Module of Series 2 needs configuration so this will provide more security than Series 1 For this project work XBee PRO can be Md Zaman InterHome Extension on Assisted Living 10
82. portable device The implementation of this unit details in breadboard design in Section 4 1 1 The connections of every unit have described above All units work simultaneously In Figure 3 10 show the schematic diagram of the proposed wrist belt This diagram consists of all units where red colour line provides supply voltage of 3 3V DC and black colour line is universal ground Md Ibna Zaman InterHome Extension on Assisted Living 23 Universityof Hertfordshire B 524 School of Engineering and Technology BEng Final Year Project Report Microcontroller Unit Sensor Unit Power Management Unit Chargng IC 5V 3 3v ov SPLMOSI GPIO1 SPI MISO GPIO2 SECUN I RECOM 3 3v I I2c spA GPIO7 12 5 1 GPIO8 4 I UART1 TXD GPIO13 UARTI RIS RESET OUT UART1 RXD MOD RESET UART1 CTS Mee GND Communication Unit SCL MOSL SDA MISO SDO ADO DIOO cs AD1 DIO1 AD2 DIO2 AD3 DIO3 RTS AD6 DI06 Associate AD5 DIOS Vref ON SLEEP CTS DIO7 AD4 DIO4 SW PB MCP73837 1 2 DC DC 3 Vcc D Out D In CONFIG bos RESET RSSI PWM1 reserved DTR Sleep RQ
83. pt for Hardware design Figure 4 2 shows how the all components are connected with Meridian P The hardware implementation is based on this concept Sensors are connected with 12C bus and XBee Module is connected by UART pins Panic button is connected with GPIO pin of Meridian P The charging unit is connected with Li lon battery and power sources The battery can be charged in two ways USB or AC DC adaptor From powers source 5V Dc supplies to charging IC and it charges the battery 3 75V The battery is connected with RECOM DC DC convertor It converts 3 3V DC to 5V DC So the output pin connected with USB mini B That USB connects with Meridian P So Meridian P runs continuously Breadboard design is shown in Figure 4 3 Md Zaman InterHome Extension on Assisted Living 26 University of Hertfordshire BEng Final Year Project Report School of Engineering and Technology RECOM DC DC Convertor XBee Series 1 Charging IC MCP73837 LIS302DL Accelerometre DS1624 Temp Sensor Panic Button Meridian P Figure 4 3 Breadboard design of the proposed wrist belt 4 1 2 PCB DESIGN Nowadays PCB design is widely used in electric connection system in manufacturing PCB means Printed Circuit Board This is design for manufacturing The Printed Circuit method was invented by Paul Eisler of the UK in 1943 38 He provided method on the conductive pattern of circuit on a layer of copper foil 38 Later on the multi layer and th
84. put data of accelerometer is read by OUT X OUT Y and OUT Z register The written code for temperature sensor and accelerometer is shown in Figure 4 12 Md Zaman InterHome Extension on Assisted Living 36 University of Hertfordshire d School of Engineering and Technology BEng Final Year Project Report public RoomBoard int address 4 address address _temp new D51624 address accelometer new LIS302DL outputs new bool 8 _inputs new bool 8 for int i 0 i lt _outputs Length i _outputs i false _temp StartConversion OxEE _accelometer Ctrl_Regl 0x67 public int GetAccelerometerValue 4 int xyz new int 3 xyz 0 accelometer OutX The output value for x axis xyz 1 _accelometer OutY The output value for y axis xyz 2 _accelometer OutZ The output value for z axis Debug Print _accelometer ToString return xyz Figure 4 12 Measurement code for temperature sensor and accelerometer 4 2 2 PANIC BUTTON The panic button is connected with a GPIO11 of Meridian P Define the panic button as ipPanic by using interrupt port in main function The port resistor mode is disabled and indicated GPIO 11 If panic button is pressed then the system is interrupted by defining time Figure 4 13 shows that GPIO pin is defined by using if statement By using Thread sleep method sets priority for interrupt and duration Here sets 500ms for panic bu
85. re 3 4 a View of 051624 b Schematic Pin outline of 051624 29 Connection of DS1624 HH 17 Figure 3 5 a View of LIS302DL b Schematic pin outline of LISS02DL 30 Connection of LISSO2DLE 18 Figure 3 6 a Proposed panic button b Schematic of Panic Button c Connection with 19 Figure 3 7 a View of XBee Module b Schematic and Pin identification 25 ic Connection ol XB8B uU uu uuu SIUE 19 Figure 3 8 a Schematic of DC DC convertor b Schematic of MCP73837 c USB and AC DC adaptor 21 Figure 3 9 Schematic of whole Power Management Unit 22 Figure 3 10 a The schematic of the proposed wrist belt b Pin outline of each 24 Figure 4 1 a View of Breadboard and b its operation 37 25 Figure 4 2 The concept for Hardware 26 Figure 4 3 Breadboard design of the proposed wrist belt 27 Figure 4 4 a PCB without Power Management Unit 37 4 mm b PCB with Power Management Unit 48 30 Figure 4 5 New Project window for creat new
86. res transmits and analyzes the data 12 BT British Telecom and Anchor Trust developed together a system that is capable of monitoring people s movements and looking for deviations from a normal pattern of behaviour that may indicate a potential problem 9 Md Zaman InterHome Extension on Assisted Living 2 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report European Commission is funded on mobile healthcare project called Mobihealth It is the implementation of GPRS or UMTS services in healthcare 10 The system allows patients to be fully mobile whilst undergoing health monitoring The patients wear a lightweight monitoring system the MobiHealth BAN Body Area Network which is customized to their individual health needs 10 So it helps to monitor of patients status and progress as well as quick handling of emergency situations 10 Royal Philips Electronics has introduced Lifeline with AutoAlert a medical alert service which is able to detect falls and call for help for elder people The alert system consists of pendant style button The button is worn around the neck which can be pressed to call for help at any time 7 Corventis is maker of wireless CHF Congestive Heart Failure monitoring devices that measure heart rate heart rate variability respiratory rate fluid status and activity 8 Piix designed to remote wireless monitoring technology in proactively manag
87. ridian P 14 3 2 2 SENSORS UNL T 2 16 3 2 3 COMMUNICATION UNIT 19 3 2 4 POWER MANAGEMENT 21 Md Ibna Zaman InterHome Extension on Assisted Living iv University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report 4 001 25 4 1 HARDWARE 25 4 1 1 BREADBOARD DESIGN 25 4 1 2 DESIGN uuu ym uu sees a nenne a aen 27 4 2 SOFTWARE IMPLEMENTATION een 30 4 2 1 TEMPERATURE SENSOR AND ACCELEROMETER 32 42 2 PANIC BUTTON 37 4 2 3 EMBEDDED DEVICGE 38 4 2 4 I2C BUS 39 4 2 5 SERIAL PORT raras 40 5 TESTING AND RESULT ANALYSIS 40 MBA DNE 40 5 2 42 5 2 1 OBSERVATIONS FOR TEMPERATURE SENSOR AND ACCELEROMETER eeene mn 44 5 2 2 OBSERVATION OF PANIC 46 5 2 3 OBSERVATION OF DATA TRANSMISSION 47 6 PROJECT
88. rough hole technique was modified by Hazeltyne of the USA in 1961 38 Printed circuit board can be constructed in three different ways single sided double sided and multi layers 38 As well as two other different techniques for electrical connection in PCB board through hole technology and surface mount technology 38 Surface mount technology applied to reduce the size of every component In this project PCB is designed by using multilayer and through hole technology Here the proposed PCB is designed by using Altium Designer 6 0 This is software for electronic product development Altium Designer is used for multi purpose Altium Designer is more applicable for FPGA level designing PCB layout designing and manufacturing gt Atfirst create a PCB project New project is created by selecting File gt gt New gt gt Project gt gt PCB Project from the menu Project appears in Project browsers Project name ends with a Md Ibna Zaman InterHome Extension on Assisted Living 27 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report PrjPCB extension Rename the new project by selecting File gt gt Save Project As Then type the name in the filename field and clock on Save gt Then design schematic under that project Right click on the name of the project then Add New To Project gt gt schematic Drag the components from Library Browser and design the schematic S
89. s connected for constant voltage supply Pin 3 and Pin 4 both are charge status output pin 35 In design both are connected LED with 1 resistor and diode 4007 In other way both be interfaced by microcontroller 35 Pin 5 is battery management OV reference so it is connected to the ground 35 Pin 6 is 1 which is for current regulation setting with AC adaptor and Pin 7 is PROG2 for current regulation setting with USB port 35 PROG1 is connected with 1kO resistor to the ground It now works in fast mode If PROG1 is float then the IC works as standby mode and the resistor value range is 1 to 100 35 PROG2 is digital input selection which is for USB port It works in logic Low or High 35 One unit load charge current when logic Low is selected and five unit loads charge current if logic High is selected 35 In this design connected to the ground means logic Low Otherwise proposes to connect a switch which helps to operate charging in different mode Md Zaman InterHome Extension on Assisted Living 22 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report Pin 8 is called PG Power Good that is for input power supply indication 35 So Pin 8 is connected with LED diode IN4007 1 resistor When power is supplied then is ON Pin 9 is for measuring temperature of battery so it is connected with Thermistor In this design Thermistor
90. s 0d62 0900766b80d62039 pdf 97 Breadboard Retrieved April 10 2010 from http www kpsec freeuk com breadb htm 38 Manufacturer of Printed Circuit Boards PCB Retrieved April 12 2010 from http www eiconnect com eiPcbRes aspx type history 39 Using Constructors C Programming Guide Retrieved April10 2010 from http msdn microsoft com en us library ms173115 VS 80 aspx 40 Picture of XBee USB Adaptor Retrieved April 12 2010 from http www active robots com products parallax xbee usb adapter shtml 41 PuTTY FAQ Retrieved April 12 2010 from http www chiark greenend org uk sgtatham putty fag html 42 ICT industries rising to the assisted living challenge Retrieved January 25 2010 from http www innovateuk org content iain gray ict industries rising to the assisted living chall ashx 43 Dunnell K 2008 Ageing and Mortality in the UK National Statistician s annual article on the population Retrieved April 8 2010 from http www statistics gov uk articles population_trends DunnellMortalityAndAgeingPT13 4 pdf 44 Assisted Living Innovation Platform Retrieved April 9 2010 from http www innovateuk org _assets pdf assistedlivingip paf 45 Harrop A Jopling K One Voice Shaping our ageing society Retrieved April 8 2010 from http press helptheaged org uk NR rdonlyres CD558156 BE2D 440B BA58 A16D393E6B35 0 OneVoiceReport pdf 46 Donal B 2009 December 10 CTIA Wireless health
91. s designed with sensing element which is capable of detecting the acceleration and an IC interface able to provide the measured acceleration through 2 serial interface 30 LIS302DL has dynamically user selectable full scales of 2g 8g and it is capable of measuring accelerations with an output data rate of 100 Hz or 400 Hz as well as the operating voltage range is 2 16V to 3 6V and temperature range is 40 C to 85 30 g defines the G forces or gravitational force which is worked with accelerometer 33 It is applicable of the earth it has two remarkable features 1 It always directed toward the centre of the earth and helps in defining the vertical 2 Directly proportional to the mass of the body 32 When stationary the force felt by earth s gravity is 1G when a body undergoes a change in speed and direction then the force increases in Md Zaman InterHome Extension on Assisted Living 17 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report proportion to the rate of change 34 Here is defined as the acceleration due to gravity gives feeling of weight for instance a heavier body has less acceleration 32 The body creates acceleration force in different direction consequently the force is called Gx G y and Gz 32 The measurement information of G and analysis of acceleration due to movement is given in detail in Chapter 5 section 5 2
92. s send data by using the same network The challenging part would be identifying the patient through data So every patient will be carried different identification All patients data will be come together but the data can be distinguished by using patients ID So by upgrading this system in future the care service provider will be able to monitor a number of patients This application will be help to identify patient s data in emergency situtation More works can be done in LIS302DL accelerometer Only REG register is used in this project To get more accurate value of movement it is requires to work on other registers of LIS302DL So working on the other registers is helpful for better measurement The Charging IC MCP73837 is interface able with the Meridian P The charging system can be controlled by interfacing with Meridian P The IC has auto shut down mode and low voltage indication system Both systems would be worked if the IC is interfaced with Meridian P So here proposed to connect the charging IC with GPIO pin of Meridian P and worked on programming with this It has already tested that the device works wirelessly Now the device is transmitting data with XBee In future the data transmitting range can be high by using XBee Pro Md Zaman InterHome Extension on Assisted Living 53 University of 8 Hertfordshire School of Engineering and Technology BEng Final Year Project Report REFERENCES 1 Joseph Har
93. sion on Assisted Living 43 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report First data is for temperature sensor then x axis then comes y axis and z axis The date and time show after those values 5 2 1 OBSERVATIONS FOR TEMPERATURE SENSOR AND ACCELEROMETER For testing the temperature touched the temperature sensor The output value of DS1624 increases towards high The sensor gets the body temperature and increases to high It goes low after releasing the touched body The values of LIS302DL differ in movement of the device The accelerometer is tested free fall and analysed the data in various positions that explained below At first observation makes the device still or slightly moves If the designed device does not move fast or remain still then the value is not rapidly increased or decreased Figure 5 4 shows the output of the system with graph The graph is drawn according to the output data In the graph Blue line is for x axis Red line is for y axis and Green line is for z axis No axis gives any extreme high value So it is not falling or moving fast towards any direction Show output from Debug X s ialisation complete x axis y axis z axis 1 3 5 7 9 11 13 15 17 19 21 b Error List zJ Output 77 Locals 27 Watch 1 a Figure 5 4 a Data of normal movement b Graph of the normal movement The device moves falling towards forw
94. t Choose a communication medium This is very essential part for this project As it will decide how the device is communicate with the smart home device There are many ways to transmit the data through device but here prefer wireless communication via radio frequency RF So the device designed with XBee communication system The details of XBee communication system is given in section 2 6 Build the hardware design in breadboard by using required components At first work on paper based designed then work on breadboard design So after getting all components designed the system on breadboard Some components need adaptor to work on breadboard like XBee IC of MSOP Mini Small Outline Package pin Explanation of connection of breadboard is given in section 4 1 1 gt Byusing or Java write the code for sensor network and microcontroller For this embedded device using Meridian P microcontroller So write the programming code for device in C on Net Microframework In section 2 5 details on NET Microframework is explained Testthe whole designed device to the assisted controller After completing the whole design and programming test the whole system Sometimes requires modification in hardware design and programming code The result analysed form the output of the system The detail provides in Chapter 5 Md Zaman InterHome Extension on Assisted Living University of Hertfordshire School of Engineering and Techno
95. tputs i false _temp StartConversion OxEE _accelometer Ctrl Regl 0x67 public int GetAccelerometerValue int xyz new int 3 xyz 0 accelometer OutX The output value for x axis xyz 1 _accelometer OutyY The output value for y axis Xyz 2 _accelometer OutZ The output value for z axis Debug Print _accelometer ToString return xyz Md Zaman InterHome Extension on Assisted Living 72
96. tton By pressing button the system interrupts for 500ms and sends the data through serial port to XBee Here use debug print so it prints the text by string and xbee Write Data method So the receiver prints the same statement Need Assistant The code shows in Figure 4 13 Md Zaman InterHome Extension on Assisted Living 37 Universityof Hertfordshire B d School of Engineering and Technology BEng Final Year Project Report Static void ipPanic OnInterrupt uint datal uint data2 TimeSpan time t bool GPIO 11 true while false t if ipPanic Read true t GPIO_Pin11 11 Thread Sleep 500 Thrad used for time So it will stop for 500ms Debug Print DateTime Now ToString ipPanic Read ToString text DateTime Now ToString Debug Print Need Assistance xbee WriteData Need Assistance Figure 4 13 Programming code for Panic Button 4 2 3 EMBEDDED DEVICE The concept of this project is based on an embedded device This section introduces how the code addressed all components together The code for embedded device is written in Program cs In Figure 4 14 shows that the components are defined under the class library Then each component is defined Here XBee using COM serial port and declares RoomBoard It prints initialising when the device starts debugging When initialising completes then a massage appears on screen initialising complete
97. ure sensor and LIS302DL accelerometer The codes are for the sensors in RoomBoard cs shows in Figure 4 8 051624 1530201 Program cs Object Browser RoomBoard cs InterHomeMeriP Program cs Object Browser RoomBoard cs InterHomeMeriP InterHomeMeriP RoomBoard i InterHomeMeriP RoomBoard El public class RoomBoard d internal sealed class LIS302DL t t region Drivers for on board devices Fiel internal sealed class 051624 9 public byte Config endregion a b Figure 4 8 a Code for 051624 b Code for 11530201 The code is under the class in different block such as Fields Constants Constructors etc To create the block writes down region region name Every block differs in function 33 That is for 12C bus configuration This provides option for time for 12C bus Md Zaman InterHome Extension on Assisted Living 32 University of Hertfordshire B School of Engineering and Technology BEng Final Year Project Report Constant It ig for declaring the registers The default address is associated on Slave Address SDA for both sensors The address is 8 bet length For DS1624 has seven bits of control byte The control byte is defined with four bit control code that is 1001 binary and this can operate Read and Write operations 29 The control byte comes after the START condition from the master device Three bits are
98. value is 20 hexadecimal The bit outlines are described in Table 4 1 Md Zaman InterHome Extension on Assisted Living 35 University of Hertfordshire B d School of Engineering and Technology BEng Final Year Project Report CTRL REG1 20h CTRL REG 20h register DR PD Fs STP STM Zen Yen Xen CTRL REG 20h register description DR Data rate selection Default value 0 0 100 Hz output data rate 1 400 Hz output data rate PD Power Down Control Default value 0 0 power down mode 1 active mode FS Full Scale selection Default value 0 STP STM Self Test Enable Default value 0 0 normal mode 1 self test P M enabled Zen Z axis enable Default value 1 0 Z axis disabled 1 Z axis enabled Yen Y axis enable Default value 1 0 Y axis disabled 1 Y axis enabled Xen X axis enable Default value 1 0 X axis disabled 1 X axis enabled Table 4 1 Register CTRL REG 1 description 30 The output data range of I2C bus picks 100Hz by selecting DR equals to 0 Here FS sets to 1 as well as enable x y and z axis The power down control sets to 0 So the value for Zen Yen and Xen sets to 1 In this project self test mode is not used So STP and STM sets to 1 So set the value for CTRL_REG1 is 01100111 in binary If converts the value in hexadecimal is 67 So writes the code for accelerometer and temperature sensor The out
99. with GSM or GPRS system For any occurrence it will inform to the PDA or mobile phone As well as the assistive person s data can be send 24 hours to the PDA or cell phone This system is also applicable for care home service By using this system care home service providers can monitor multiple patients at a time In Figure 3 2 shows the internal combination of the proposed wrist belt The accelerometer LIS302DL and temperature sensors 051624 are connected with Meridian P by using 12C bus The explanation of this bus is given above in section 2 4 A panic button is connected with the GPIO General Purpose Input Output pin of the Meridian P The connections between the sensors and panic button are described in sensor unit section 3 2 2 The collected data will send through the XBee Module which connected with the UATR pin of the Meridian P The microcontroller can receive or Md Zaman InterHome Extension on Assisted Living 13 University of Hertfordshire School of Engineering and Technology BEng Final Year Project Report transmit data through XBee Modules For this project the microcontroller can only send data to the XBee Here using light weight rechargeable Li ion battery So the wrist belt works as wireless device and the person is independent to move So a battery rechargeable system is designed in the wrist belt The Power management unit is designed with the battery rechargeable IC MCP73837 and DC DC convertor The design and op

Download Pdf Manuals

Related Search

Related Contents

uso e manutenzione  File - Scotia Homes  PDFファイル - Hi-HO      Full Text Available - College of Health  12. CIGÜEÑAL/EQUILIBRADOR  StarTech.com 19 Piece Computer Tool Kit in a Carrying Case    AR-MBA1101 接続例 RGB接続  

Copyright © All rights reserved. Failed to retrieve file