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pc - based gps tracking with immobilization capability through sms

1. High suw nato solactwe chip ananas Araia n quad tatpack package MAXIM Maxim integrated Products 1 4 2 o 4 2 4 o o 9 4 2 2 2 4 H H 4 o o o 4 4 101 MAX220 MAX249 5V Powered Multichannel RS 232 Drivers Receivers ABSOLUTE MAXIMUM RATINGS MAX220 222 232A 233A 242 243 Supply Voltage 02 48 20 Pin Plastic DIP derate OOmWFC above 70 C 440mW Input Voltages 1G Pin Narrow SO 8 70m WFC above 70 De BAG i ta Voc DIY 16 Pin Wide SO derate 9 52m WC above s70C 763TW Fin Except MAX220 2 2 230V 18 Pin Wide SO 952m WFC above 70 762 Fin MAXZ20 20 Pin Wide SO derate 10 00m W C above TOPC B00rmW Tour MARZO Noo 1 1 1 20 Fin SSOP derme B OUmWFPC shove 70C 64OmW Tour 220 Race nied ee HIN 1 amp Pin derate 10 00mWFC above 4 70 C 200mW ae 19 Pin CERDIP derste 10 53mWPC above 470C 542mW Tour TEES WENT SG Operating Temperature ga Aout 4 AN 0 3V MAX AC C Driver Reoeiver Short Circuiled to GND Continuous MAX AE E to 4 85 C Cortiruous Power Dissipation TA 70 C MA2 BEC to 4125 C 16 Fin Plestic 10 53m WAC
2. small form factor 25 4 25 4 3 mm AN High sensitivity 159dBm Searching up to 32 Channel of satellites Fast Position Fix O Low power con umtion N KTCM m ready Built in WAAS EGNOS MSAS Degg Support NMEAD183 V 3 01 d Real time navigation for locat abel services For Car Mavigation fine Navigation Fleet Management AVL and Location Based rvi Pilot Personal Navigation or touring ices systems and Mapping devices application 119 M 89 HOLUX 2 Technical Description 2 1 Block Diagram ANTENNA EXTERNAL LNA 120 Antenna power supply input 3V Antenna power supply 2 8V RTC and backup SRAM power 2 6 3 6 VDC Reset active low lg MA a General purpose WO i i 4 8 E 13 E 15 E 18 19 20 24 El 25 26 28 2 3Specification echnoigzY GPS chipset NGA Oraid 1 025MHZ chip ate NG Rec eft e _ Without 21d 3 0 M 2D RMS DGPS WAAS EGNOS MSAS RTCM 25 M Velocity Without aid 0 1 M sec 0 1 microsecond Sync GPS time Hot start sec average HOLUX 121 HOLUX 57600 bps default 4800 Data bit 8 Stop bit 1 1Hz defzult ENERO m MM CMOS 2 8 V Level 406 to 857 Temperature 40 to 1257 T Operating Humid Storage 5 to 95 No condensing 2125 4 25 4 3 mm 122 M 89 HOLUX GPS Module senes THE TEO HAMT EX GPS 4 User In
3. 1 Device mounted on FR4 printed circuit board lead length 10 mm 97 Philips Semiconductors Product specification High speed diodes 184148 1N4448 ELECTRICAL CHARACTERISTICS T 2 25 C unless otherwise specified eT lg 80 mA 100 ax Reus thermal resistance from junction to te point lead length 10 mm KW Raja thermal resistance from junction to ambient lead length 10 mm note 1 350 KW Note 1 Device mounted on a printed circuit board without metallization pad 98 3 Terminal Regulators Output Current up to 100 mA No External Components Internal Thermal Overload Protection Internal Short Circuit Current Limiting Direct Replacements for Fairchild 00 Series description This senes of fixed voltage integrated circuit voltage regulators is designed for a wide range of applications These applications include on card regulation for elimination of noise and distribution problems associated with single point regulation In addition they can be used with power pass elements to make high cument voltage regulators One of these regulators can deliver up to 100 mA of output curent The internal limiting and thermal shutdowm features of these regulators make them essentially immune to overload When used as a replacement for a zener dinde resistor combination an effective improvement in output impedance can be abtained together with lower bias current The
4. 45 8 m Temperature Coefficient T s mewmesey 25 RMS Output Noise Natea poo Vou Mote 1 Low duty cycle pulse tested with Kelvin connections Note 2 The dropout voltage Is defined as V Vour which measured when Vout 6 100mV Note 3 Bandwidth of 10 Hz to 10 kHz Mote 4 Gus 15 measured the natural convection at Ta 25 C on a low effective thermal conductivity test board of JEDEC 51 3 thermal measurement standard The case polnt of Bye Is on the center of the exposed pad 114 N A K Semiconductor 5 TC90 1 4 NPN Silicon Transistor Description General purpose application e Switching application Features e Excellent h linearity hee Ic 0 1 mA hre 1 22 mA 0 95 e Complementary pair with STAS015N Ordering Information Type NO Marking Package Code STC9014N STC9014 TO 92N Outline Dimensions unit mm PIN Connections 1 Emitter 2 Base 3 Collector 115 STC9014N Absolute Maximum Ratings Ta 25 C Y calectoremitter vots v __ Emitter base voltage Ve 5 V 39 alear poner isn 59 Electrical Char acteristics _ Characteristic Test Condition Typ Mas Unit Collector emitter breakdown voltage BVao Ie 1mA 0 so Collector cut off current Vea 80V 1 0 so m
5. 5V to 3 3V Linear Regulator Low Voltage Microcontroller etc Power Supply Linear Regulator for LAN Card and CD ROM Pin Configurations TOP VIEW RT9163 OOce 507 223 112 RT9163 BichiTek VIN GNO your GNO VIN VOUT TAB TAB RT9163 OOCGL RT9163 OOCGT RT9163 0 0CGF SOT 223 SOT 223 SOT 223 Typical Application Circuit Ener Apifer Vaer Functional Pin Description _Pin Name Pin Function 113 879163 Absolute Maximum Ratings Power Dissipation Pp 25 C TO mnm MM izmW enne nnnm DETUN EDEN s TAT 2 enm AT Ty a Package Thermal Resistance Note 4 TOAZ 8j MM ied ZW SOIT 88 SOIT RB emm MM TE EN SOT 223 nmm MM MM IB ZW TALI doa MM 18 NI M TIEL thy enn BE a Operating Junction Temperature Range 4 to 125 C a Storage Temperature Range ___ ___ C to 15070 Electrical Characteristics Vins SV Tam 25 C unless otherwise specified mes Tesiconatons Wn wax 3300 335 von Tse saan v RTe162 50 Vwa 4900 5000 100 RTB183 33 My SY 15V STERBEN RT8162 80 wewn 150 c en e x Dropout Voltage Note2 t3 t4 v Curentmt tm 90 ma Quiescent Curent e S
6. GSM module to send GPS coordinates Codes for PIC are written in Basic using Proton AT commands are for codes used in the GSM module while NMEA command format are used for the GPS control Power supply is the source of the power for the hardware components This can be coming from the car s battery or from the cigarette lighter of the car Computer Server GSM COMPUTER MODULE TX RX Figure 3 2 PC Server The computer server which is shown in Figure 3 2 allows the GPS tracker unit to communicate to each other The server sends commands to the tracker unit attached to the vehicle but it can only receive reply from the GPS tracker unit if the code sent by the server is correct In the computer server part the 20 software used is written in Visual Basic NET that can compare the received coordinates sent by the device to locate the vehicle s exact location The software provides a graphical view of a map of the National Capital Region NCR After locating the exact location the computer now sends the request from the sender of the commands by sending the exact location of the vehicle Immobilization of the car is also through the PC server to the GPS tracker unit Data Gathering The proponents gathered data on how to interface the microcontroller to GPS and GSM modules Knowing how to interface both of these modules can eliminate the possibility of having a larger circuitry Using the data acquired from IEEE journals the pro
7. Rows with standard voltage device data only are shaded for Improved readability Data in column ls at 5V 25 C unless otherwise stated These parameters are for design guidance only ard are not tested Note 1 This is the limit to which Vo can be lowered without losing RAM data 2 The supply current 15 mainly a function of the operating voltage and frequency Other factors such as NO pin ioading switching rate oeclllator type intemal code execution pattem and temperature also have an Impact on ihe current consumption The test conditions for all loo measurements in active nperatian made are OSC1 extemal square wave from rail io ralt VO pins t stated pulled to Voor MCLR WOT enabiedidisabled specified 3 The power dawrn curent Sleep made does nat depend on the osclilator type 2ower dowrn current is measured with the part In Sleep mode with all AO pins In high impedance state and bed ip Voo and Ves amp For RC ose configuration cement through REXT nG Included The curent through ihe resistor can ne estimated by the formula ir Vopi2RexT mA with kt 5 Timeri cecillator when enabled adds approximately 20 uA to the specification This value is from characterization and is for design guidance only This Is not tested amp The A current is the addtional current consumed when this peripheral is enabled This current should be added to the base Ino or lp measurement 7 Wh
8. SerialPort With SMSPort PortName usbport BaudRate 115200 Parity Parity None DataBits 8 StopBits StopBits One Handshake Handshake None DtrEnable False RtsEnable False NewLine vbCrLf End With SMSPort Open SMSPort WriteLine AT CMGF 1 Threading Thread Sleep 100 SMSPort WriteLine AT CMGS amp gps mobile no amp SMSPort WriteLine command amp Chr 26 Threading Thread Sleep 100 SMSPort Close 80 MainStatusLabel Text Command Message Sent If MainSwitch Then Timer AutomaticMode Start End If End Sub Private Sub clear messages For index As Integer 0 To 4 message index String Empty mobile no index String Empty Next End Sub End Class 8l APPENDIX D SERVER SOFTWARE SCREENSHOTS Server waiting for request 82 GPS Request 83 APPENDIX E PROTOTYPE PICTURES Front View 84 Top View 85 APPENDIX F SYSTEM REQUIREMENTS System Requirements OS Windows XP or Windows Vista Processor 1 0 GHz or faster XP or 2 0 GHz or faster Vista Memory 1 0 GB RAM XP or 2 GB RAM Vista Hard Drive 20MB free space Microsoft Net Framework 3 or higher Mysql version 6 0 or higher Usb 2 0 port Globe Tattoo GSM 86 APPENDIX G USER S MANUAL AND INSTALLATION GUIDE Part Names System front Serial Relay Status Indicator Message Reading Fuse holder ON OFF Switch DC IN connector Relay co
9. StopBits StopBits One Handshake Handshake None DtrEnable True RtsEnable True NewLine vbCrLf End With For index As Integer 0 To 4 SMSPort Open SMSPort WriteLine AT CMGF 1 should delay Threading Thread Sleep 100 SMSPort WriteLine AT CMGR amp messagectr should delay Threading Thread Sleep 100 portdata SMSPort ReadExisting startCMGR portdata LastIndexOf CMGR If startCMGR gt 0 Then THERE IS A MESSAGE ON THE SELECTED SLOT portdata portdata Remove 0 startCMGR 19 mobile no messagectr portdata Remove portdata IndexOf message messagectr portdata Substring portdata LastIndexOf 3 message messagectr message messagectr Remove message messagectr LastIndexOf OK Else THERE are no message End If SMSPort Close messagectr messagectr 1 If messagectr 5 Then messagectr 0 End If 74 Next End Sub Private Sub delete sms Dim messagectr As Integer 0 Dim SMSPort As New SerialPort With SMSPort PortName usbport BaudRate 115200 Parity Parity None DataBits 8 StopBits StopBits One Handshake Handshake None DtrEnable True RtsEnable True NewLine vbCrLf End With For index As Integer 0 To 4 SMSPort Open SMSPort WriteLine AT CMGF 1 Threading Thread Sleep 100 SMSPort WriteLine AT CMGD amp messagectr Threading Thread Sleep 100 SMSPort Close messagectr messagectr 1 If messagectr 5
10. To compute for the value of base resistor the formula is 39 Rb Vin Vbe Ib Where Rb Base resistor Vin Voltage input Vbe forward voltage from base to emitter Ib Base current The output voltage of port RD4 is 4 3V and the maximum forward voltage for silicon transistor is 0 85V and base current is 4mA that comes from port RD4 substituting the values in the formula shows that Rb Vin Vbe Ib Rb 4 3V 0 85 4mA Rb 862 5 ohms Since there is no 862 5 ohm resistor in the market the proponents considered the highest next value which is 870 ohms 40 b3 Co OO MCLR RAO Figure 3 11 Pull Up Resistor in PIC16F877A PIC16F877A uses pull up resistor connected to MCLR to avoid the microcontroller from resetting Since MCLR pin of PIC16F877A is inverted hanging the pin without connection or simply making the input signal to 0 will put the microcontroller to unable state This resistor pulls up the MCLR pin to almost ground level Base from the datasheet of the microcontroller the value of pull up resistor must be less than 40k ohms The voltage source 5V comes from the output voltage of the 7805 regulator and the output current is 6mA Computing for the value of pull up resistor is given by Ohms Law R V I Where R Resistor value V Voltage source I Current passing to device 5V 6mA 4 R 833 33 ohms Since there is no 833 33 ohm resist
11. WAFBLOOC series is characterized for operation over the virtual junction temperature range of to 125 C 18100 SERIES POSITIVE VOLTAGE REGULATORS JANUARY 7976 REVIEED JULY 190 D PACKAGE TOP VIEW OUTPUT INPUT COMMON COMMON COMMON COMMON NG NG Na intemal connection LP PACKAGE TOP VIEW INPUT COMMON OUTPUT TO ZZBAA PK PACKAGE TOP VIEW INPUT COMMON QUTPUT AVAILABLE OPTIONS PACKAGED DEVICES PLASTIC CYLINDRICAL iLF IPE OUTPUT VOLTAGE TOLERANCE pATSLIZACD pATBLIEACD D and LP packages are avaliable taped and reeled Add fw sufrir A to the device type leg WATSLOSACOR The PK package Iz only awallabie taped and reeled WATELOZACPHR Chip forms are tested at Ta 25 C 99 78L00 SERIES SITIVE VOLTAGE REGULATORS ENVENU JANUARY 1978 REVISED JULY 1909 electrical characteristics at specified virtual junction temperature Vj 3 V 10 40 mA unless otherwise noted Vs ATE V to 20 V io 1 mA tn AD mA ETE OC 1297C lg 21 mAto 7D mA MG 1259 bd Vj 24 75 Vio 20 V Wo EV tn 20 V Ripple rejection Vie amp V In 2D V T 120 Hz 1 mAto 100 voltage reguistion Ip 1 mAto 40 mA Dua naise 0 xw om LLL LL KG MECEL E Bim current change 1 ip 1 mAin dL mA T Pulza teztr techniques maintain Tyas close bo a5 possible Thermal effects mu
12. above 470 C 842mW Storage Temperature C to BOC 18 Pin 11 1 imWPC above 70C 889mW Lead Temperature soldering 10x TERA MOM d ty Note 1 Input voltage measured with Tour in high impedance state SHON o Voc W Note 2 For the MAX220 V and V can have a maximum magnitude of TV but their absolute disierence cannot exceed 13V Simas beyond thare 1200 unda Absoluto Ratings may pormanan damage ity dace aro sios mings an iueiai qperatbn of 2 ihoso or ary dha conditions beyond hose indaatad ite salwe 2 ite secficgis is nd imped Exmsum 4240 rating odine for may down rhabity ELECTRICAL CHARACTERISTICS MAX220 222 232A 233A 242 243 Vec 45V 210 C1 C4 0 1uF MAX220 C1 0 047uF C2 C4 0 334 Ta Tyan to Tax unless otherwise noted Quaput Voltage Swing Altraramitter outputs loaded with GNO 28 V hd Logie resid Lon CO IT GG AN Tm rires capt DG PINE MAXZD Ver SN aes except MARZO operahan E SHDN OV 222 742 shutdown 20 Von 55V SHON OV Vout 216V MAX222042 001 10 E men l 3 18 pw Panata NY aaa om mr 14 oy _ _ s ra R 232 RECEIVERS SS esum 1 aa LESLIE aa _ SV scare aa 2 241 83 212 Input Hysteresis Al exoept MAX2
13. avadable in fixed output voltage of 3 3V 35 and 5 0V The 9163 provides excellent regulation over line load and temperature variations The other features include low dropout performance at a maximum of 1 4V at 500mA fast transient response intemal current limiting and thermal shutdown protection of the output devices The RT9163 is a three terminal regulator available in surface mount SOT 89 SOT 223 and TO 252 packages Ordering Information RT9163 00 Lose Type ZL TO 92 L Type X SOT 89 XL SOT 89 L Type L TO 252 G SOT 223 Type GL SOT 223 Type tl GT SOT 223 GF SOT 223 Type IV Operating Temperature Range P Pb Free with Commercial Standard G Green Halogen Free with Commer cia Standard Note RichTek Pb free and Green products are gt ROHS compilant and compatible with the current require ments of IPCIJEDEC J STD 020 Sultable for use in SnPb or Pb free soldering processes 100 tin Sn plating Marking Information For marking information contact our sales representative directly or through a Rich Tek distributor located in your area otherwise visit our website for detail Features Low Dropout Maximum 1 4V at 500mA Fast Transient Response e 2 Total Output Regulation 0 4 Line Regulation e 0 4 Load Regulation TO 92 SOT 89 SOT 223 and TO 252 Packages RoHS Compliant and 100 Lead Pb Free Applications
14. average for the server response time is 4 seconds The time taken for these tests are dependent on the delay of the system in reading the SMS and the delay caused by the network Requesting correct format for turning on the engine is the same as the conditions in requesting the exact location and in turning off the engine Partial correct format is also the same for the correct format Requesting incorrect format to the server will not trigger the server to request to the GPS tracker unit 55 Chapter 5 CONCLUSION AND RECOMMENDATION This chapter contains the overall conclusion regarding the design This chapter also includes the recommendation for the design to improve its function reliability and accuracy Conclusion The design after several testing has conformed to the stated objectives that include the reliability accuracy of the GPS module and security by means of immobilization of the vehicle The general objective is also met by the design The design can track vehicle using GPS module by sending a SMS message to the GSM module The immobilization of the vehicle is also met by cutting of the electrical power to the engine by interfacing the design to the ignition wire The database made for the design is almost complete for NCR regions The design is also tested in different scenarios still it performs its task Accuracy of the design in tracking is almost the same as the output of Google Earth which is taken from th
15. btnSwitch Click ByVal sender As System Object ByVal e As System EventArgs Handles btnSwitch Click If MainSwitch Then btnSwitch Text ON ManualModeToolStripMenuItem Click sender e MainSwitch False Else btnSwitch Text OFF AutomaticModeToolStripMenuItem Click sender MainSwitch True End If End Sub Private Sub Timer Initial Tick ByVal sender As System Object ByVal e As System EventArgs Handles Timer Initial Tick init mes Timer Initial Stop 74 MainStatusLabel Text Initializing Done End Sub Private Sub ExitToolStripMenuItem Click ByVal sender As System Object ByVal As System EventArgs Handles ExitToolStripMenuItem Click Me Close End Sub Private Sub ManualModeToolStripMenulItem Click ByVal sender As System Object ByVal e As System EventArgs Handles ManualModeToolStripMenuItem Click MainSwitch False ManualModeToolStripMenuItem Checked True AutomaticModeToolStripMenuItem Checked False Label2 Enabled True Label3 Enabled True txtGPSE Enabled True txtGPSN Enabled True btnUp Enabled True btnDown Enabled True btnLeft Enabled True btnRight Enabled True btnLocate Enabled True Timer AutomaticMode Stop MainStatusLabel Text System is off End Sub Private Sub AutomaticModeToolStripMenuItem Click ByVal sender As System Object ByVal e As System EventArgs Handles AutomaticModeToolStripMenuItem Click MainStatusLabel Text Starting automatic mode Ma
16. cellular phone carried by the owner when the connected alarm security device is triggered AT commands are used to control the built in modem in a cellular phone AT is the abbreviation of attention AT commands are instructions used to control a modem Every command line starts with AT a good reason why modem commands are called AT commands 13 Some of the AT commands used are ATD to dial ATA answer AT CMGS send message AT CMSS send message from storage and AT CMGR read SMS messages There are very large numbers of AT commands but the designers chose to use a few commands and these are AT CMGR for checking and reading the message and AT CMGD to delete the message With these commands the designers will know the location of the vehicle being tracked As for this design project it aims to interface a GSM module in the car system The GSM module will send a SMS message that contains information about the present location of the car Table 2 2 below shows a typical AT commands that are supported by some of the known GSM modem manufacturers AT COMMAND DESCRIPTION SYNTAX Most common AT commands is used to AT check if the GSM modem AT CR is communicating with the PC AT command is used to AT CMGS Receivers AT CMGS send a message number lt CR gt Message lt Ctrl Z gt AT command is used to AT CMGL ALL lt CR gt AT CMGL read messages Note Shows all messages AT command is used t
17. f A SMS starting with lt ONENG gt format is used to turn on the relay board g A SMS starting with lt OFFENG gt format is used to turn off the relay board h A Visual Basic NET program installed in the computer is used to compare the received coordinates get its exact locations and send message to the one requesting via SMS i Coordinates longitudinal and latitudinal are the output signal coming from the GPS module that will be sent by the GSM module to the computer j The input to be fed to the device in the vehicle is a SMS message following a code depending on the request to be done k NCR map is attached in the software for viewing the vehicle s location The engine cannot be started when the relay is open not energized The design s delimitations are the things or conditions that it cannot perform or function Delimitations of the design are as follows a The computer cannot display the exact location of the vehicle outside the NCR map b The target vehicle to be tracked when positioned in dead spot of the GPS satellites is impossible to locate Example of dead spots are tunnels basement parking and underwater C The displayed map in the computer for tracking will not be in real time d GSM module can only accommodate 160 characters it will only receive the message if the number goes beyond but it cannot decode the data sent e One out of two SMS sent simultaneously will be processed Defi
18. on the database Exit Sub Else MainStatusLabel Text Location Found myData Read LocationToolTip ToolTipTitle amp myData 0 ToString amp E amp myData 1 ToString xloc myData 2 yloc myData 3 nameloc myData 4 myConn Close draw point xloc yloc nameloc End If End Sub Private Sub draw point ByVal x As Integer ByVal y As Integer ByVal desc As String Dim coor As New Point x y Dim mappage As Integer 1 Dim mapx mapy As Integer mapx Math Truncate x 785 mapy Math Truncate y 526 If mapx 0 And mapy 0 Then PictureBox1 Image Global GPS Tracking and Security My Resources 1 ElseIf 0 And 1 Then PictureBox1 Image Global GPS Tracking and Security My Resources 2 ElseIf 0 And mapy 2 Then PictureBox1 Image Global GPS Tracking and Security My Resources 3 ElseIf 0 And 3 Then 78 PictureBox1 Image Global GPS Tracking and Security My Resources 4 ElseIf 0 And 4 Then PictureBox1 Image Global GPS Tracking and Security My Resources 5 ElseIf 0 And mapy 5 Then PictureBox1 Image Global GPS Tracking and Security My Resources 6 End If convert x and y back to minimal values x x mapx 785 y y mapy 526 coor New Point x y If x 0 And y 0 Then MessageBox Show Your vehicle is at desc But it is outside the map area Information
19. the current location of the device they issue the AT WGPSPOS command to get the data in NMEA standard format This is an example of a circuit interface of microcontroller to the GPS module Figure 2 2 RS 232 Driver Circuit In Figure 2 2 the circuit includes a serial port female to be connected to any serial port device and to interface it to the UART of microcontroller you need to put a MAX232 IC which is a Multichannel Driver Buffer In this way interfacing PIC or any MCU to the serial port is possible 17 In the GPS data formatted and transmitted phase the NMEA formatted data is then parsed and convert to designed format The format includes the device ID session ID time in UTC format flags latitude longitude speed date and reserved Rsv fields Each line ended with the symbol represents one sample of data from a GPS Tracking module in one session or fleet Samples are bundled together ended with the character n and transmitted to the Goo Server Once the GPS Tracking Module is connected to GPRS networks it transmits position information to Goo Tracking Server which is a commodity personal computer running a Linux operating system with an open source software such as Apache web server PHP and MySQL program The server has three functions to receive the information to store information in a database and to display the information The receiving function opens a non blocking socket to receive data from multi
20. voltage to function It is connected to the input pin of the 7805 voltage regulator to lower it to 5VDC Capacitors from the MAX232 connected from C1 C2 V and V are specified by the manufacturer together with their values 0 1uF because the capacitors are impossible to be solved due to incomplete circuit presentation from the datasheet GPS module uses RT9163 as a voltage source because it needs 3 6VDC of voltage source A high speed diode 1N4148 is connected forward biased from the output of the RT9163 voltage regulator to the real time clock and SRAM backup pin of the GPS module A LED with 33 ohms resistor is connected in GPIO pin of GPS module to indicate that the module is updating its location The antenna of the GPS is connected to the RF IN and ground of the module The transmitter pin of the GPS module is connected to TTL CMOS input of the MAX232 T2IN The output of the level converter T2OUT is then again set as input in RS 232 input pin R1IN and then converted it to TTL CMOS level R1OUT This is done to convert the voltage level of the GPS module from TTL CMOS level to RS 232 and then to RS 232 to TTL CMOS The output pin of the MAX232 R1OUT can now be connected to UART pin of the microcontroller which is port RC7 MCLR pin of 34 the PIC16F877A is connected to 5VDC together with a 840 resistor to disable the pin because it is an active low pin Vss of the microcontroller is connected to ground and Vdd is conn
21. 0 00 TOTAL PHP 9 713 00 60 APPENDIX B PIC PROGRAM Device 16F877A Declare XTAL 4 DECLARE WATCHDOG OFF DECLARE FSR CONTEXT SAVE ON ALL DIGITAL TRUE REMARKS ON Declare LCD DTPIN PORTC 0 Declare LCD PORTD 0 Declare LCD ENPIN PORTD 1 Declare LCD LINES 2 Declare LCD INTERFACE 4 HSERIAL BAUD 4800 HSERIAL RCSTA 9610010000 HSERIAL TXSTA 9000100100 HSERIAL CLEAR On DECLARE SERIAL DATA 8 Symbol T9600 84 NO LIST Symbol T4800 188 NO LIST 61 dim ctr as byte alertCtr as byte UTC as byte dim latWhole as word latDec as word latN as float dim latI as byte dim longWhole as word longDec as word longN as float dim longI as byte dim pfi as byte dim RQCtr as byte dim myMsg 80 as byte dim mCtr as byte dim idx as byte dim mMode as byte dim eStat as byte TRISA FF TRISB 7F TRISC 80 TRISD A8 PORTB 7 0 PORTD 2 0 eStat EREAD 0 62 if eStat 1 then PORTD 4 1 else PORTD 4 0 endif cls Print At 1 1 INITIALIZING Print At 2 1 DEVICE delayms 8000 PROG_MAIN cls Print at 1 1 GPS Initializing pfi 0 while pfi 0 HSerIn Wait GPGGA UTC Wait DEC4 latWhole DEC5 latDec latI Wait DEC5 longWhole DEC5 longDec longI Wait pfi wend cls Print at 1 1 GPS Init OK delayms 2000 while 1 gosub smsRead wend smsRead for mCtr 1 to 3 for ctr 0 to 79 myMsg ctr 32 next ctr cls Print at 1 1 READI
22. 15 2006 Monahan Torin 2007 War Rooms of the Street Surveillance Practices in Transportation Control Centers Global Positioning Systems Inertial Navigation and Integration Mohinder S Grewal Lawrence R Weill and Argus P Andrews Embedded Systems Dictionary by Jack Ganssle and Mike Barr IEEE Transactions on Consumer Electronics Vol 50 No 4 November 2004 A J Kloneck Simultaneous sending and receiving system APPENDIX A LIST OF MATERIALS Quantity Component Name Price per piece Total 1 SMS module PHP 4 500 00 PHP 4 500 00 1 HOLUX GR 89 GPS module PHP 4 500 00 PHP 4 500 00 1 MAX232 IC PHP 50 00 PHP 50 00 1 PIC16F877A PHP 175 00 PHP 175 00 8 0 1 uF Ceramic Capacitor PHP 2 00 PHP 16 00 3 35V 22uF Electrolytic PHP 5 00 PHP 15 00 Capacitor 2 78L05 Voltage Regulator PHP 15 00 PHP 30 00 3 LED PHP 2 50 PHP 7 50 1 16V 47uF Electrolytic PHP 5 00 PHP 5 00 Capacitor 4 2 pin female connector PHP 5 00 PHP 20 00 1 8 pin female connector PHP 22 00 PHP 22 00 2 YaW 1k Resistor PHP 1 00 PHP 1 00 1 40 pin IC socket PHP 15 00 PHP 15 00 1 4Mhz Crystal Oscillator PHP 20 00 PHP 20 00 2 33pF Ceramic Capacitor PHP 2 00 PHP 4 00 1 16V 470uF Electrolytic PHP 5 00 PHP 5 00 Capacitor 59 14W 22k Resistor PHP 1 00 PHP 1 00 172W 2 7K Resistor PHP 1 50 PHP 1 50 Black Casing PHP 175 00 PHP 175 00 Relay Board PHP 150 00 PHP 15
23. 2VDC 30A Normally open SPST relay 870 ohm resistor PNP transistor LED and a diode The resistor connected in series with the base of the 26 transistor that limits the current passing from the microcontroller to the transistor A led is connected to the coil of the relay to indicate if the contacts of the relay are open or close The diode is used as a protection diode to the circuit It blocks current coming from the coil of the relay when the coil de energized when power supply is turned off This protects other components from sudden burst of current Transistor is used as a switch in the relay board It is configured as a common emitter configuration In this way it can have high current output to provide the coil in energizing d Testing Testing of the circuit can be done part by part or as a whole GPS module and GSM module can be tested first in a personal computer using hyperterminal Testing the whole system can be done after all major components are tested to be working correctly and have been transferred to PCB C Integration of Hardware and Software After the software and hardware are tested integration comes next to test the system as a whole 27 D Design Testing This is the last method to be followed Required output of the system must be obtained to validate the system s performance Output of the system is analyzed to verify its reliability and accuracy Verification of the systems output can be checked using Go
24. 43 Voc no hysteresis in shd hpu LLL S gt TILICMOS Volage Low 02 04 Output Voltage High 25 Ngg 02 Soong GND TTLCMOS ut Shart Circut Current Sining Vour Voc a 1 4 2 MAXIM 102 5V Powered Multichannel RS 232 Drivers Receivers ELECTRICAL CHARACTERISTICS MAX220 222 232A 233A 242 243 continued Voc 45V 210 C1 C4 Q tuF MAX220 C1 0 047 uF 2 0 320 to Taga unless otherwise noted E SHON Voc ar EN Voc SHIN OV Jor 222 We Vout 5 Vor Tinga Tesi Lo PG N Input Threshold High 20 14 5 m Output Leakage Current 6 22 MAX222 242 fincludas cherge purme start up FON Goos ce Fee Transmitter ta Propagation MAX222 232 4 233A 242 243 5 Delay Dference Normal Operation U _ Fiecewver to Propagation 2221232 233 02421043 incl Bid aS UI OU Note 3 MAX243 2 is guaranteed to low when Raw is gt OV or is floating Operating Supply Voltage a OY 55 Cz 05 2 Supply Current SHON MAX222 232 2332421243 5 eens wa MAAZA AAN ANAIA 15 Tase 0 9 aii Ta A Cio orc 2 55 e 22242 hal a SHON Threshold Low 222 242 0 700 NECI NG SHON Threshold High MAX222 242 20 14 pF F Rm
25. 6F877A Microcontroller voltage regulator 78L05 RT9163 Level Converter MAX232 and a relay The supply voltage of the circuit is 12V which is fed to the voltage regulator to regulate the output to 5V for the microcontroller and the level converter Another voltage regulator RT9163 which 29 voltage output is 3 3V is used for the supply of the GPS module The module needs 3 3V of supply voltage to operate A LED is connected to the GPIO pin of the GPS module to indicate if the module had acquired a signal to the satellites A blinking LED means the module is updating its location while a steady LED means its not updating High Speed diode is connected forward biased to the GPS pin 21 Real Time Clock and backup SRAM A Level Converter MAX232 is used to convert voltage signal TTL CMOS to RS 232 from the GPS module to be read by the microcontroller s UART pin Microcontroller uses 4Mhz of crystal oscillator for clock Clock is needed for the execution of programs in the microcontroller A crystal oscillator is precise compared to RC oscillator resonator 2 parallel 33pF capacitor connected to the crystal oscillator to limit its frequency to 4MHz The receiver pin of port c is connected to RS 232 output of the MAX 232 and the transmitter pin of the GPS module is connected to the transmitter input of the MAX 232 level converter The GSM module is directly connected to RD7 and RD6 pin of Port D of the PIC Relay board is composed of a 1
26. EPROM is 1 and for engine off request the value of the EEPROM changes to 0 Rebooting the system will not affect the current state of the relay board not unless a SMS code for engine off or engine on is sent KEYWORDS Short Message Service Global Positioning System EEPROM Server NCR viii Chapter 1 DESIGN BACKGROUND AND INTRODUCTION This chapter contains the background of the design project its basic components the history of the topic and its different features Background Nowadays technology is now offering the widest and powerful tools to track or to locate a person vehicle roads and even the directions when navigating the sea with the use of Global Positioning System GPS but this doesn t come with cheaper price With the use of the free service of the 26 GPS satellites made by the US Air Force a device with GPS capability can track anyone anywhere with the use of the technology Gadgets like cell phones PDA s and computers are now capable of acquiring access to the 26 satellites of the US Air Force but acquiring those gadgets would cost a lot Tracking the vehicle is not just the concern of the owner but also its security The proponents design a device that can track a vehicle with a device attached to it in which tracking is done by sending a SMS message to the device and verifies the code by the microcontroller to validate and perform its requested operation The device can also control the vehicles engine to tu
27. MessageBoxButtons OK MessageBoxIcon Information Else LocationToolTip Show Your vehicle is at desc PictureBox1 coor LocationToolTip Show Your vehicle is at desc PictureBox1 coor End If End Sub Private Sub btnLocate Click ByVal sender As System Object ByVal e As System EventArgs Handles btnLocate Click locate Val txtGPSN Text Val txtGPSE Text End Sub Private Sub Timer SendingMes Tick ByVal sender As System Object ByVal e As System EventArgs Handles Timer SendingMes Tick Timer SendingMes Stop MainStatusLabel Text Sending Location to default mobile no Dim SMSPort As New SerialPort With SMSPort PortName usbport BaudRate 115200 Parity Parity None DataBits 8 StopBits StopBits One 19 Handshake Handshake None DtrEnable False RtsEnable False NewLine vbCrLf End With SMSPort Open SMSPort WriteLine AT4 CMGF 1 Threading Thread Sleep 100 SMSPort WriteLine AT CMGS amp default mobile no amp SMSPort WriteLine Your vehicle is at amp nameloc amp amp Chr 26 Threading Thread Sleep 100 SMSPort Close MainStatusLabel Text Message sent If MainSwitch Then Timer AutomaticMode Start End If End Sub Private Sub Timer SendingCommand Tick ByVal sender As System Object ByVal e As System EventArgs Handles Timer SendingCommand Tick Timer SendingCommand Stop MainStatusLabel Text Sending commands to device Dim SMSPort As New
28. NG MSG DEC mCtr msgGR PORTD 2 1 SEROUT PORTD 6 T9600 AT CMGR DEC mCtr 13 SERIN PORTD 7 T9600 3000 msgOE Wait 34 Wait 34 Wait 34 Wait lt GPSREQ gt 64 cls Print at 1 1 GPS REQ MSG DEC mCtr delayms 2000 mMode 1 gosub WriteData gosub smsSend goto delSMS msgOE SEROUT PORTD 6 T9600 AT CMGR DEC mCtr 13 SERIN PORTD 7 T9600 3000 msgNE Wait 34 Wait 34 Wait 34 Wait ONENG cls Print at 1 1 ON REQ MSG DEC mCtr eStat 1 EWRITE 0 eStat PORTD 4 1 delayms 2000 mMode 2 gosub WriteData 65 gosub smsSend goto delSMS msgNE SEROUT PORTD 6 T9600 AT CMGR DEC mCtr 13 SERIN PORTD 7 T9600 3000 msgTO Wait 34 Wait 34 Wait 34 Wait lt OFFENG gt cls Print at 1 1 OFF REQ MSG DEC mCtr eStat 0 EWRITE 0 eStat PORTD 4 0 delayms 2000 mMode 3 gosub WriteData gosub smsSend goto delSMS msgTO cls Print at 1 1 NO REQ MSG at Print at 2 1 MSG DEC mCtr 66 delayms 3000 PORTD 2 0 delSMS SEROUT PORTD 6 T9600 AT CMGD DEC mCtr 13 delayms 3000 next mCtr return smsSend RQCtr 1 PORTB 7 1 delayms 3000 PORTB 7 0 startSending cls Print at 1 1 SENDING ALERT DEC RQCtr SEROUT PORTD 6 T9600 AT CMGS 34 09052777430 34 13 67 delayms 1000 if mMode 1 then SEROUT PORTD 6 T9600 GPS DEC4 latN longl DEC4 longN elseif mMode 2 then SEROUT PORTD 6 T9600 Engine ON else SEROU
29. PC BASED GPS TRACKING WITH IMMOBILIZATION CAPABILITY THROUGH SMS By Aldous C Eugenio Kelvin Kristian M Manalo Jessiedaniel B Maribojoc Albert Joseph A Pasion John Paolo V Ranara A Design Report Submitted to the School of Electrical Engineering Electronics Engineering and Computer Engineering in fulfilment of the Requirements for the Degree Bachelor of Science in Computer Engineering Mapua Institute of Technology February 2010 APPROVAL SHEET Mapua Institute of Technology School of EECE This Is to certify that we have supervised the preparation of and read the design report prepared by Aldous C Eugenio Kelvin Kristian M Manalo Jessiedaniel B Maribojoc Albert Joseph A Pasion and John Paolo V Ranara entitied PC Based GPS tracking with Immobilization Capability through SMS and that the said report has been submitted for final examination by the Oral Examination Committee 2 hfe Aida M Alfaro Jocelyn F Villaverde Reader Design Adviser As members of the Oral Examination Committee we certify that we have examined this design report presented before the committee on December 10 2009 and hereby recommended that it be accepted as fulfillment of the design requirement for the degree in Bachelor of Science in Computer Engineering Criseld4 B Loyola Panel Member Panel Member This design report is hereby approved and accepted by the School of Electrica
30. PS GSM Tracker Unit PC Server Design Procedure Flow Chart GPS GSM tracking unit Flow Chart GPS GSM PC Server Flow Chart Complete Circuit Diagram 4MHz Crystal Oscillator Circuit Limiting Resistor for LED RED Limiting Resistor for LED GREEN Transistor Base Resistor Pull Up Resistor in PIC16F877A PIC16F877A PCB Layout GPS Module PCB Layout SPDT Relay Board PCB Layout vil ABSTRACT GPS tracking in a vehicle with immobilization capability through SMS is a server based device attached to the vehicle ignition wire The device can support tracking and immobilization to the vehicle when a SMS code is received by the server For tracking the server sends a command to the device to request for the GPS coordinates and sends it back to the server via SMS The SMS is parsed to get the X and Y coordinates and compared it to the database After comparison the server sends the exact location of the vehicle to the one requesting In case the location is outside NCR the server will send a message to the on requesting that the vehicle is out of coverage For immobilization the program uses a SMS code to turn on and off the relay board which is connected to the ignition wire The request code changes the value of the EEPROM to save its last state to avoid reset on the relay board When the system boots up the first thing that the PIC will do is to check for the value of EEPROM For engine on request the relay is turned on and the value of the E
31. S module Goo Tracking firmware Goo Tracking server The GPS module that the designers used in their system is based on 8 bit AVR RISC microcontroller which is low power MCU with 32k ROM and 2k RAM and has several peripherals such as UART SPI I2C to connect GPS GPRS module MMC module and GPIO control module The GPS module has two functions the GPS locates the device position and the GPRS transmits the device location to the server The I2C interface is connected to GPIO Control module which an I O interface to control external device such as car alarm or Electronic Control Unit ECU for vehicle immobilization The Goo Tracking firmware is the firmware that performs three phases the initialization the GPS position reading and the GPS data formatted and transmitted to Goo Tracking server via GPRS networks The initialization phase prepares the module for reading and transmitting location information It is composed of three functions The first function is to initialize parameters on AVR microprocessor for UART SPI GPIO and timer for GPS reading The second 16 function is to initialize GPRS GPS module to set up parameters to warm up GPS engine to make a connection to a GPRS network and to connect to the server via TCP IP socket The third function is to initialize MMC module into SPI mode for data read write In the GPS position reading phase the MCU sends a series of AT commands to GPRS GPS module via the UART port To acquire
32. T PORTD 6 T9600 Engine OFF endif delayms 1000 SEROUT PORTD 6 T9600 26 delayms 10000 if RQCtr gt 1 then goto smsOut else i RQCtr RQCtr 1 goto startSending 68 endif smsOut delayms 1000 return WriteData HSerIn Wait GPGGA UTC Wait DEC4 latWhole DEC5 latDec latI Wait DEC5 longWhole DEC5 longDec longI Wait pfi cls Print at 1 1 latI DEC4 latWhole DEC4 latDec Print at 2 1 longI DEC5 longWhole DEC4 longDec latN latWhole 100 latN latN latDec 10000 latN latN 60 69 latWhole latWhole 100 latN latWhole latN longN longwhole 100 longN longN longDec 10000 longN longN 60 longWhole longWhole 100 longN longWhole longN cls Print at 1 1 latI DEC4 latN Print at 2 1 longI DEC4 longN Return End 70 APPENDIX C SERVER SOURCE CODE Imports System IO Ports Imports MySgql Data MySqlClient MESSAGE DELETING Public Class Main Dim mobile no 4 As String Dim message 4 As String Dim messagelocation As Integer Dim default mobile no As String 09062884499 Dim gps mobile no As String 09396592140 Dim nameloc As String Dim command As String Dim MainSwitch As Boolean False Dim usbport As String COM3 Private Sub Main Load ByVal sender As System Object ByVal e As System EventArgs Handles MyBase Load MainStatusLabel Text Initializing Timer Initial Start End Sub Private Sub
33. Then messagectr 0 End If Next End Sub Private Sub Timer_AutomaticMode_Tick ByVal sender As System Object ByVal e As System EventArgs Handles Timer_AutomaticMode Tick Timer AutomaticMode Stop clear messages MainStatusLabel Text Reading SMS Timer ReadMes Start 75 End Sub Private Sub Timer ReadMes Tick ByVal sender As System Object ByVal e As System EventArgs Handles Timer ReadMes Tick Timer ReadMes Stop init mes MainStatusLabel Text Reading SMS Done read sms delete sms MainStatusLabel Text Checking SMS CHECK FOR TRIGERRING MESSAGE For index As Integer 0 To 4 If message index String Empty Then ElseIf message index StartsWith GPS Then This is a gps request Send a appropriate sms signal to the device default mobile no mobile no index command lt GPSREQ gt Timer SendingCommand Start Exit Sub ElseIf message index StartsWith ON Then This is a engine off request Send a appropriate sms signal to the device default mobile no mobile no index command lt ONENG gt Timer SendingCommand Start Exit Sub ElseIf message index StartsWith OFF Then This is a engine off request Send a appropriate sms signal to the device default mobile no mobile no index command lt OFFENG gt Timer SendingCommand Start Exit Sub ElseIf message index StartsWith GPS Then Locate this location This is a reply message send
34. a Emitter cut off current 100 na uo Collector emitter saturation voltage 1 100mA 1 10 or oz v tse ie wemium ue ass v paco sc opm pee worm w hy rank 100 300 C 200 600 D 400 1000 116 RALT R n MICROPROCESSOR CRYSTAL UNITS FEATURES SERIES A B C EXCELLENT CLOCK SIGNAL GENERATOR FOR CPU s HC 49 U HC 51 U AND UM 1 WIDE FREQUENCY RANGE INDUSTRY STANDARD PACKAGES SPECIFICATIONS 20 C TO 70 STANDARD OPERATING TEMPERATURE RANGE 40 C TO 85 EXTENDED STORAGE TEMPERATURE RANGE C TO 126 C LOAD CAPACITANCE 10 TO 32 pF OR SERIES So CO AN NN ELIT pem 5 D 0 5 5 25 PPM MAXIMUM 75 cm DROP TEST IN 3 AXES ONTO A HARD a nnn FREQUENCY RANGE AND MODE OF OSCILLATION BY HOLDER TYPE FUND aon 507 con SOT wmcxroamen weecruer aaa Toso he Sunn ue GE ure ESTE TO SE M PART NUMBERING SYSTEM 117 THE PRO NAME IN GPS Shae KH Website www gzxintucom 1 Introduction 1 1 General introduction 89 an ultra ministure 25 4 25 4 3 mm GPS engine board designed by low 139dBm and fast navigation application The stable performance of 89 15 your best choice to be embedded in your portable device 1 2 Key Features Ny
35. a Mazza 6 12 Transition Slew Rate Voc 425 C measured fron 43V t5 3 30 to V cr JV te 22 22222 42242 13 35 Lyra Pla an 5 9 TLL to RS 222 Normal Operation er v 222 22242224 242 242 15 35 EN ee 5 MAZZA ON TAN 0 1 eren ay amid nn 98 3 RS 22 to TLL Normal Operati AE t 002272777722275 08 1 us __ Ub n ng ns MAXIM 3 103 5V Powered Multichannel RS 232 Drivers Receivers i AEN TD AN VOLTAGE DOUBLER Ch y CL VOLTAGE VENTER 6tcXVMW Occ X VIN Figure MAXP2OM AX IIMA VA Pin Configuarton and Typical Opening Ciwut ce uy mu 2 VIERE PI MIMBERS IN TYPICAL OPERATING CIRCUIT ARE FOR FACKAGES ONLY Figure MAX222IM AI 4 Pin Confgumtons and Typical Opersting MAXIM 104 MICROCHIP PIC16F87XA Data Sheet 28 40 44 Pin Enhanced Flash Microcontrollers 2003 Microchip Technology Inc 02395825 105 PIC16F87XA Pin Diagram PDIP 40 pin PIC16F87A7 874A Yr RA NAN a a a pg QFP PIC16F877A PIC16F874A o _ Aae GAATOCHWCTOUT RASA INDE aa RADIAN DRESS WEP 106 PIC16F87XA 17 0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings T Ambient temperature unde
36. age source VI Voltage load usually given in the LED datasheet I Current from source R limiting resistor The power source of GPS LED is 3 3V and the forward current for standard red LED is 40mA based from its datasheet Substituting to the equation will result to R 3 3V 2V 40mA R 32 5 ohms Since the 32 5 ohms value for resistor is not available in the market the proponents used the nearest higher value which is 33 ohms 430 LED a GND Figure 3 9 Limiting Resistor for LED GREEN Figure 3 9 uses the same formula in Figure 3 8 to compute for the value of limiting resistor from port RD2 The voltage source comes from the port pin RD2 of the microcontroller which is 4 3V Maximum Voltage load for standard 38 green LED is 2 6V The output current for RD2 is 4mA as shown in the datasheet Substituting the value 5 R 4 3V 2 61 4mA R 425 ohms Since there is no 425 ohms value for resistor in the market the proponents used 430 ohm resistor 3T1 870 C9014 GND Figure 3 10 Transistor Base Resistor The transistor base is connected in series with a resistor to limit the current that will pass the base of the transistor when power is supplied When the current passes through the base of the transistor and if exceeds the maximum allowable current for the transistor the transistor will be damaged that s why a resistor is connected to the base of the transistor
37. atellite based Dispatch System This technology implemented introduced the Automatic Vehicle Location and Dispatch Systems or AVLDS This new satellite based AVLDS comprises different features like the interactive voice responses IVR and computerized dispatch system CDS which are not included in the proponents design since the objective is to track and disable the vehicle s engine when it is carnapped from the owner Another is the differential global positioning system DGPS which is a wireless data communications WDC According to the article written by Ziqi Liao an author of a book published in IEEE Transactions on Engineering Management GPS dispatch systems will play an increasingly important role in the further improvement of their operations and services The findings of this study should have practical implications to the development of sophisticated public transport system Future studies can be conducted to explore the implementation of on board vehicle navigation systems in different environments Another idea came from the design of A Alheraish named Design and Implementation of Home automation System The design used GSM cellular communication network and integrated it to a microcontroller and a GSM module for wide range of applications The microcontroller acted like a brain in of the system It is used to communicate with the modules when there is a need to access in sending or receiving data GSM module acted as an
38. ch is equivalent to a 0 0001 decimal in the GPS coordinates 50 Testing of GSM module Another major part of the system is the GSM module This module can also be tested in a PC using serial port and a Hyperterminal 7 0 Vista Version First way to test GSM module is to use a hyperterminal and use AT commands if it is supported If the said module is supported by a certain command it will output an OK to a certain AT command sent to the module Table below shows an example of AT command testing AT Command Reply of the hyper terminal AT OK AT CMGS OK AT CMGF OK AT CMGD OK AT CMGR OK Table 4 2 AT commands reply table The given AT commands in Table 4 2 are the basic commands that are needed to send receive and delete messages The reply OK of the computer only means that the computer is communicating to the GSM module The proponents used AT CMGS 09272872312 CR hello lt ctri Z gt for testing 51 the module in sending a SMS message The recipient 09272872312 received the text message hello after commanding the GSM module in the hyperterminal The command AT with a reply of OK means that the PC and the GSM module are communicating to each other AT CMGF is a command that sets the GSM module reading format AT CMGR is an AT command that shows the message in a specified index The proponents tested the GSM module by typing in the hyperterminal AT CMGR 0 and reply
39. dating its location A 2 row Serial LCD is used to show the output of 44 the GPS module The default or raw data that a GPS module receives are continuous streams of data GPGGA 161229 487 3723 2475 N 12158 3416 W 1 0 9 0 M 0000 18 which includes different information altitude velocity position time number of satellites used etc in 1 stream of lines starting with a sign The only data that the proponents need is the longitudinal and latitudinal coordinates in a GPGGA format which is the number that is before the letter N or S and after W or F A routine in the PIC program that parses the streams of data is needed to extract the needed information regarding the GPS location After extracting the required information it is now converted to decimal degrees value of longitudinal and latitudinal format The converted values can now be used as the GPS position of the module and can be verified using Google Earth or Google Maps Below is a table that shows the testing of the GPS module in different locations Vehicle Exact Coordinates GPS Server Server Location Received response response result N and E time time location Mapua Institute of Mapua Techonlogy Manila Institute of Point 1 Near 14 5907 121 9779 62 seconds 3 seconds Technoloy IEEE Muralla Street Manila City Mapua Institute of Mapua Techonlogy Manila Institute of Point 1 Near 14 5907 121 9779 42 seconds 4 seconds Tec
40. ds near SM Sta Quezon City Mesa Manila City Aurora Boulevard Aurora near SM City Boulevard Centerpoint 14 6065 121 0198 53 seconds 3 seconds near SM Sta Quezon City Mesa Manila City Aurora Boulevard Aurora near SM City Boulevard Centerpoint 14 6065 121 0195 55 seconds 4 seconds near SM Sta Quezon City Mesa Manila City Santolan Road EDSA near corner EDSA San 14 6108 121 0547 89 seconds 5 seconds Camp Krame Juan Metro Manila San Juan Metro Manila Santolan Road EDSA near corner EDSA San 14 611 121 0557 45 seconds 4 seconds Camp Krame Juan Metro Manila San Juan Metro Manila Santolan Road EDSA near corner EDSA San 14 6111 121 0556 69 seconds 3 seconds Camp Krame Juan Metro Manila San Juan Metro Manila Santolan Road EDSA near corner EDSA San 14 6109 121 0556 57 seconds 3 seconds Camp Krame Juan Metro Manila San Juan Metro Manila Santolan Road EDSA near corner EDSA San 14 6108 121 0556 34 seconds 3 seconds Camp Krame Juan Metro Manila San Juan Metro Manila E Rodriguez E Rodriguez Avenue corner Avenue cor Katipunan Avenue 14 6145 121 0708 35 seconds 3 seconds Katipunan Pasig City Near Petron Pasig City E Rodriguez E Rodriguez 48 Avenue corner Avenue cor Katipunan Avenue 14 6145 121 0714 45 seconds 3 seconds Katipunan Pasig City Near Petron Pasig City E Rodriguez E Rodriguez Avenue c
41. dustrial Continued Standard Operating Conditions unless otherwise stated Operating temperature 40 TAS 65 C for Industrial DC CHARACTERISTICS 40 5 TAs 125 C for extended Operating voltage Voo range as described in DC specification 40 9 85 lot 1 6 mA 4 5 40 10 85 ICH 3 0 mA Voo 4 5V 40 C 9 85 C Capacitive 2 05 2 pin All VO pins and OSC2 RC mode CB SCL SDA 2 mode Using EECON to read wrtte Waan min operating voltage Using EECON to read wrrte min operating voltage These parameters are Characterized but not tested Data in Typ column is at SV 25 C unless otherwise stated These parameters are for design guidance only and are not tested Note 1 in RC oscikator configuration the OSC 1 CLKI pin is a Schmitt Trigger input It is not recommended that the PIC16F57XA driven with extemal clock in RC mode 2 The leakage current on the MCLR pin is strongly dependent on the applied voltage level The specified levels represent normal operating conditions Higher leakage current may be measured at different input voltages 3 Negative current defined as current sourced by tne pin 111 RT9163 500mA Low Dropout Positive Voltage Regulator General Description The RT8183 is a positive low dropout regulator designed for applications requiring low dropout performance at full rated current The device is
42. e Design Scope and Delimitation Definition of Terms Chapter 2 REVIEW OF RELATED LITERATURE AND STUDIES Chapter 3 DESIGN PROCEDURES Block Diagram Data Gathering Design Procedure System Flowchart Circuit Diagram PCB Layout Chapter 4 TESTING PRESENTATION AND INTERPRETATION OF DATA Testing the Whole System Testing of GSM Module Testing Engine Off On Request vi vii viii m NGABA YY WU Chapter 5 CONCLUSION AND RECOMMENDATION Conclusion Recommendation BIBLIOGRAPHY APPENDICES Appendix A List of Materials Appendix B PIC Program Appendix C Server Source Code Appendix D Server Software Screenshots Appendix E Prototype Pictures Appendix F System Requirements Appendix G User s Manual and Installation Appendix H Datasheets 1N4001 General Purpose Rectifiers 1N4148 High Speed diodes Maxim Max220 Max 249 Microchip PIC87XA RT9163 Low Dropout Positive Voltage Regulator STC9014N NPN Silicon Transistor Microprocessor Crystal Units M 89 GPS Module 56 56 57 58 Table 2 1 Table 4 1 Table 4 2 Table 4 3 LIST OF TABLES AT Commands System Testing AT Commands reply Table Engine Off On Testing vi Figure 2 1 Figure 2 2 Figure 3 1 Figure 3 2 Figure 3 3 Figure 3 4 Figure 3 5 Figure 3 6 Figure 3 7 Figure 3 8 Figure 3 9 Figure 3 10 Figure 3 11 Figure 3 12 Figure 3 13 Figure 3 14 LIST OF FIGURES GSM Module Circuit RS 232 Driver Circuit G
43. e satellite which is very accurate Overall the functionality of the design can greatly contribute to resolving problems on carnapping in the country Sooner or later the design will be introduced to the market as a reliable product for tracking and security purpose for automotives 56 Recommendations The proponents recommend to individuals interested to the design to greatly improve the tracking functionality as well as the security functions Tracking of the vehicle as recommended by the proponents must be broader than NCR to increase the reliability of the system within Luzon In this way outside the NCR will not be considered to be a dead spot by the computer server For better and faster way to track the vehicle the proponents also recommend that the tracking must be done in real time Furthermore they encourage that all interested researchers should find a way to minimize the overlapping of messages when simultaneous testing is done The proponents also recommend that the interface between the design and the car must be done using the ECU of the car But this method is much complicated costly and affect dangerous that might the cars performance 57 BIBLIOGRAPHY Marine Differential GPS Satellite Navigation Trinity House IEEE Transactions on Consumer Electronics Vol 50 No 4 November 2004 A Beginner s Guide to GNSS in Europe by IFATCA GPS Overview from the NAVSTAR Joint Program Office Retrieved December
44. ected to 5V A 4MHz crystal oscillator is used to PIC16F877A as clock input for instruction cycle The 2 33pF capacitors are connected parallel to the oscillator to trim the oscillating frequency down to 4MHz GSM module is directly connected to port RD7 and RD6 without any interface The relay board is connected to RD4 A LED in series with 430 ohms resistor connected to RD2 indicates the reading of the GSM module The relay board circuit is controlled by the microcontroller because it is connected to RD4 of the microcontroller Whenever RD4 is in low state emitter of the transistor connected in ground is open and the supply voltage of the relay is 12V thus making it in open state Whenever RD4 is high emitter is close thus voltage supply of the relay changes to 12V 0V allowing the coil of the relay to energize A wire connected in output pin of the relay cuts the connection of the ignition wire The diode acts a protection to components that may be damaged when the coil de energized when supply is cut off The PNP transistor is used as a switch that also has a high current gain due to its common emitter configuration LED indicates the status of the relay 35 GND GND Figure 3 7 4 Mhz Crystal Oscillator Circuit Figure 3 7 shows the 4Mhz crystal oscillator connected to the microcontroller The crystal oscillator needs 2 parallel capacitors to trim the clock resonance to desired clock frequency Without oscillator capacitors the cloc
45. ehicle tracking system to perform vehicle immobility The applied technology in the design is based on the current and existing technology and still evolving depending on its application Car owners can use the design that travels within the vicinity of National Capital Region NCR Car owners can not only track their cars but they can also immobilize them The design can give ideas to other designers to improve and use the GPS tracking and immobility to its maximum potential The impact of this design will open the local community in developing more reliable tracking and security system for their vehicles The design can lighten up the work of the authorities that are searching for stolen vehicles equipped with the tracking device Globally the design will contribute to maximize the use of GPS and enhance existing design to perform more accurately Scope and Delimitation The design can only perform those that are listed below and the components that are presented in the design Scopes of the design are as follows a The design uses a GPS module in the device b A GSM module is used for both the device and to the computer terminal C A SIM card is used for both of the GSM modules d Request codes through SMS messages that are recognized by the microcontrollers are pre defined by the programmers in who it will validate and decide on what operation to be done e A SMS starting with GPSREQ format is used for vehicle tracking
46. em and temperature also have an Impact on the curant consumption The test conditions Tor Ipo measurements In active operation OSC1 extera Square ware fan rali n rail all NG pins tri eaied pulled ip Vou WOT enabiedidisabled as 3 The power down current In Sleep mode does noi depend on the oscillator type Power down current 15 measured with the part in Sieep mode with VO ping In high impedance state and tied to Voo and Ves 4 For RC oec configuration currant through is not Included The current through the resistor can be estimated by the formuta Ir Voo 2Rext mA wiih Rex in 5 Timer oscillator when enabled adds approximately 20 pA to the specification This value le trom characterization and for design guidance only This is not tested amp The A cuirent is the additional curent consumed when thls peripheral Ig enabled This current should be added to ihe base of measurement 7T When BOR 15 enabled the device will operate comectly unti the Vaca voltage trip point Is reached 109 PIC16F87XA 17 2 DC Characteristics PIC16F873A 874A 876A 877A Industrial Extended PIC16LF873A 874A 876A 877A Industrial Standard Operating Conditions uniess otherwise stated Operating temperature 40 C lt TAS 485 C or Industria DC CHARACTERISTICS 407 lt TA s 125 C for extended Operating voltage Voo range as described in DC specificatio
47. en BOR enabled the device wil operate correctly until the Veor voltage trip point le reached 108 PIC16F87XA 17 1 OC Characteristics PICIGFB73A 8T4A BTGA 8T7A Industrial Extended Industrial Continued PICIGLFBT3AIBTAAIB7EATETTA Standard Operating Conditions unless otherwise stated Industrial Operating temperature 40 C x Tas 485 C for Industrial Standard Operating Conditions unless otherwise stated in Operating temperature 4D C lt lt 85 C for Industrial i AD C TA x 125 C for extended Param Characteristic Supply Current 2 16LFETXA 20 m XT RC gsc configurations Foec 4 MHz Yoo 3 mA RC psc configurations Poet 4 MHz VoD 5 5V TOLFaTRA 35 pA osc configuration Pomc 32 kHz VDD 3 DV dl 16F87XA T HS oec configuration sss 0015 Algor Brown out uA BOR enabled VDD 5 0V eee lin d NI Legend Rows with standard voltage device data only are shaded for Improved readability t Data in column is at Sv 25 unless otherwise stated These parameters are for design guidance only and are not tested Mots 1 This is the mit to which Voo can be lowered without losing RAM data 2 The supply cument is mainly a function of the operating voltage and frequency Other factors such as NO pin baging ewliching rate oscHator type Internal code execution patt
48. haracteristics Figure 1 Forward Current Derating Curve 20 40 9 00 100 120 00 190 AMBIENT TEMPERATURE C Figure 3 Non Repetitive Surge Current to E C 5 o w 8 3 E i 4 8 510 20 40 60 100 KUNBER OF CYCLES AT 6092 REVERSE CURRENT p AI 08 FORWARD VOLTAGE Vj 20 ag 60 80 190 120 RATED PEAK REVERSE VOLTAGE 95 sapay esodung pauan 700tNI LOOPNL DATA SHEET 1N4148 1N4448 High speed diodes Product specification 2002 Jan 23 Supersedes data of 1999 May 25 P S PHILIPS Philips Semiconductors Product specification ee High speed diodes 1N4148 1N4448 FEATURES DESCRIPTION Hermetically sealed leaded glass 1N4148 and 1N4448 are high speed switching diodes fabricated planar SOD27 DO 35 package technology and encapsulated in hermetically sealed leaded glass 50027 High switching speed max 4ns 00 35 packages General application Continuous reverse voltage max 75 V Repetitive peak reverse voltage 100 V 3 Repetitive peak forward current 450 The doves are type branded APPLICATIONS Fig 1 Simplified outline 50027 DO 35 and symbol High speed switching LIMITING VALUES in accordance with the Absolute Maximum Rating System IEC 60134 Pie total power dissipation Tans 25 C note 1 juncontemperatsre
49. hnoloy IEEE Muralla Street Manila City Mapua Institute of Mapua 45 Techonlogy Manila Institute of Point 2 Open 14 5905 121 9783 38 seconds 5 seconds Technoloy Parking Near Muralla Street Basketball Court Manila City Mapua Institute of Mapua Techonlogy Manila Institute of Point 2 Open 14 5904 121 9784 54 seconds 3 seconds Technoloy Parking Near Muralla Street Basketball Court Manila City Mapua Institute of Mapua Techonlogy Manila Institute of Point 3 Along 14 5909 121 9785 80 seconds 3 seconds Technoloy Muralla Street Muralla Street Manila City Mapua Institute of Muralla Street Techonlogy Manila Intramuros Point 3 Along 14 591 121 9784 56 seconds 4 seconds near Mapua Muralla Street Institute of Technology Manila City Jollibee along Marcos Marcos Highway Highway near Antipolo City 14 6216 121 1084 45 seconds 3 seconds Sta Lucia Marikina City Jollibee along Marcos Marcos Highway Highway near Antipolo City 14 6215 121 1084 85 seconds 3 seconds Sta Lucia Marikina City Jollibee along Marcos Marcos Highway Highway near Antipolo City 14 6215 121 1084 40 seconds 3 seconds Sta Lucia Marikina City Jollibee along Marcos Marcos Highway Highway near Antipolo City 14 6216 121 1083 47 seconds 4 seconds Sta Lucia Marikina City Jollibee along Marcos Marcos Highway Highway
50. inSwitch True ManualModeToolStripMenuItem Checked False AutomaticModeToolStripMenuItem Checked True Label2 Enabled False Label3 Enabled False txtGPSE Enabled False txtGPSN Enabled False btnUp Enabled False 72 btnDown Enabled False btnLeft Enabled False btnRight Enabled False btnLocate Enabled False Timer AutomaticMode Start End Sub Private Sub AddCoordinatesToolStripMenuItem Click ByVal sender As System Object ByVal e As System EventArgs Handles AddCoordinatesToolStripMenuItem Click Coordinates Management ShowDialog Coordinates Management Dispose End Sub Private Sub init mes Dim SMSPort As New SerialPort Dim portdata As String Dim msgctr As Integer 0 Dim startCMGR As Integer With SMSPort PortName usbport BaudRate 115200 Parity Parity None DataBits 8 StopBits StopBits One Handshake Handshake None DtrEnable False RtsEnable False NewLine vbCrLf End With SMSPort Open SMSPort WriteLine AT CMGF 1 Threading Thread Sleep 100 SMSPort WriteLine AT CMGR amp msgctr Threading Thread Sleep 100 portdata SMSPort ReadExisting startCMGR portdata LastIndexOf CMGR SMSPort Close msgctr msgctr 1 End Sub Private Sub read_sms Dim startCMGR As Integer Dim messagectr As Integer 0 73 Dim portdata As String Dim SMSPort As New SerialPort With SMSPort PortName usbport BaudRate 115200 Parity Parity None DataBits 8
51. interface between the microcontroller and the GSM network Nowadays the mode of transmitting data by cellular networks is the GSM or the Global system for mobile communication One option in the GSM network for transmitting data is the SMS or the Short Message Service The designers chose the SMS as a mode of transmitting the data The designer also used a microcontroller that acted as an interface between the GSM module and the Personal Computer and GPS module and the automobile The controller takes the data from the GPS module and translates it to AT commands or the Attention commands so the module can understand it GSM module takes the AT commands from the microcontroller Figure below shows a GSM module circuit The module is composed of a SIM card holder which holds the SIM to be used in 12 the module GSM transmitter receiver which transmits and receives the SMS message and a GSM module that is connected to a microcontroller GSM module can be easily connected to any ports of a microcontroller and doesn t need any interface circuit for it to function normally va JOO RET AW DTR 1 GNO CLE ENG Mi SA 488 a TAO SIM Card EMI RET ATS s nus Seen z Transmitter Receiver GSM Module OSM Module Connector Figure 2 1 GSM Module Circuit SMS Security System is a design made by some Mapuans where a controller is used to control a cellular phone attached to a receiver box so that it can send a message to the
52. itch that connects the battery to the ignition system and other electrical devices Source Michael Bowler The Great Book of Automobiles 13 Relay is a simple electromechanical switch made up of an electromagnet and a set of contacts Source I Sinclair J Dunton Practical Electronics Handbook 6 Edition 14 UART also known as Universal Asynchronous Receiver Transmitter is a piece of computer hardware that translates data between parallel and serial forms UARTs are commonly used in conjunction with other communication standards such as EIA RS 232 Source Dario J Toncich Data Communication and Networking application for Manufacturing Industries 15 Serial Port is a serial communication physical interface through which information transfers in or out one bit at a time Source I Sinclair J Dunton Practical Electronics Handbook 6 Edition 10 Chapter 2 REVIEW OF RELATED LITERATURE AND RELATED STUDIES The main concept of this design was established with the help of some existing designs studies and principles while conducting this design This organized and synthesized collection of citations of related studies and principles helps in achieving the design objectives Part of this idea came from the three companies in Singapore namely Comfort Transportation Pte Ltd with its subsidiary Yellow Top Cab Trans Island Bus Services and CityCab Pte Ltd that implemented their taxi dispatching using s
53. k frequency can be higher than 4 Mhz Load capacitance is usually given in the datasheet of the crystal oscillator The circuit only needs 4 Mhz of clock frequency for the operation of the microcontroller that s why the proponents need to compute for the oscillator capacitors The formula for the capacitors is C1 C2 2 X Cload Cparasitic Cinput Where C1 amp C2 are the parallel capacitors in the oscillator Cload is the capacitance load given by the crystal manufacturer Cparasitic is the Capacitance parasitic usually 5pF for computation 36 Cinput is the Capacitance input The crystal oscillator datasheet requires 19pF of capacitance load and a 5pf capacitance parasitic Since there is no capacitance input the value for it is 0 Substituting the values to the formula given above indicates that C1 C2 2 X 19pF 5pf 0 C1 C2 38pF 5pF C1 C2 33 pF 33 at LED GND Figure 3 8 Limiting Resistor for LED RED Limiting resistor for LED is very important when using an LED in a circuit This resistor limits the current that will flow from the power source to the LED Connecting LED directly to power source may destroy the LED for it will exceed its peak current especially for high voltage source For Standard Red LED the maximum value of the Voltage Load is 2V Computing for the required limiting resistor for Standard Green LED is 6 1 37 Where Vs Volt
54. l Engineering Electronics Engineering and Computer Engineering as fulfillment of the design requirement for the degree in Bachelor of Science in Computer Engineering Dr Felicito S Caluyo Dean School of EECE 24 3 als li ACKNOWLEDGEMENT First of all we would like to thank God for giving us the strength to pursue this paper not only for complying with the requirements but doing this for ourselves to be knowledgeable enough before we graduate For the wisdom and knowledge that God has given to us we offer this paper for His greatness and we believe that He is the best engineer in the world We would also like to acknowledge the support and assistant of our adviser Engr Jocelyn We also thank for the support of our family and friends for giving us financial and moral support without them this paper would be impossible to finish We would also like to acknowledge the people who helped us especially in installing our prototype in the car Lastly for our course facilitator Engr Noel B Linsangan we thank him for teaching us on how to be responsible and for sharing with us valuable inputs about our paper and for giving us the chance to learn a part of his expertise ill TABLE OF CONTENTS TITLE PAGE APPROVAL SHEET ACKNOWLEDGEMENT TABLE OF CONTENTS LIST OF TABLES LIST OF FIGURES ABSTRACT Chapter 1 DESIGN BACKGROUND AND INTRODUCTION Background Statement of the Problem Objectives Significance and Impact of th
55. l components and sre recorrenended for appli 3 State Driver and Receiver Outputs catons where printed circuit board space is critical Open Line Detection MAX243 Applications Ordering Information Portable Camputers PART TEMP RANGE 220 t 6Plastic DIP 220 5 FG to r 16 Narrow SO 6tcXVMW 0Occ XVIW Inter ace Translation MAKZ20C WE 1700 16 Wide SO Battery Powered 5 232 Systems MAX2200 0 to TOC Dice Multidrop RS 232 Networks MAX220EPE APC to 85 16 Plastic DIP MAX220ESE APC to 85 16 Nerrow SO MAX220E WE 40 to 485 C 16 Wide SO MAX220E JE APC to 4 85 C 16 CERDIP MAX220MJE SC to 4126C 16 information continued at end of data sheet Contact factory for dice specia mor s Selection Table Nomina SHDN Ax ot Cap Valus amp Throo Activoim Dala Rate gg MAX241 and recuvors active in shuldown Aio 50 dyan wth shutdown Stancard 5 UN or batary sunp es sane ncr as VACI Ingay daraga Higher Sow tain caps No cunc No aaral cans 5 11 Heese Sidi Na anara caps Shutdown troo stato Compionants EM PC sonal port Reptaces 1488 unc 1485 Standard 5 NA or bakary supp as ango pacage solution IBM PC sara port High saw nale wo modos High nate cups tos shutdown Todos High int nine operating
56. level to the MELA pin rather than pulling this pin directly to Ves 3 PORTO and PORTE are not Implemented on PICTSFETSA S76A devices NOTICE Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device This Is a stress rating only and functional operation of the device at those or any other conditions above those Indicated ee Ba Is not Impiled Exposure to maximum rating conditions for 107 PIC16F87XA 171 DC Characteristics PICTGFB73A 8TAAI B7GAIBTTA Industrial Extended Industrial PICTELFB73A BTAAI87EAJBTT A Standard Operating Conditions juniess otherwise stated Indus brat Operaing temperature AIC TA s 65 for Industrial i Standard Operating Conditions unisas otherwise stated iret Operating temperature 40 C TA 85 C for Industrial mms 5 ANG lt TA x 125 C for extended Param Charactarlatic Supply Voltage 18LFE7XA 20 55 V AI configurations DC to 10 MHz 16FETXA 40 configurations VBOR JE enabled Fax 14 MHZ 0002 RAM Data Retention voltage DOD3 Von Start Voltage to Ves all 14 5 Power on ensure Internal Power on Reset POR for details Reset signal 1 Yoo Rise Rate to ensure Wine See Section 14 5 Powar on Internal Power on Reset Reset POR for detaile signal pons vecon Brown out Resat 3 65 435 v BODEN bit in configuration word voltage enabled Lagend
57. mitted by the satellites Source GPS Overview from the NAVSTAR Joint Program Office Retrieved December 15 2006 7 ITS Intelligent Transport System are those utilizing synergistic technologies and systems engineering concepts used to develop and improve transportation systems of all kinds Sources Monahan Torin 2007 War Rooms of the Street Surveillance Practices in Transportation Control Centers 8 Radio Navigation relies on radio frequency sources with known locations Sources Global Positioning Systems Inertial Navigation and Integration Mohinder S Grewal Lawrence R Weill and Argus P Andrews 9 Microcontroller is a small computer on a single integrated circuit consisting of a relatively simple CPU combined with support functions such as a crystal oscillator timers watchdog serial and analog I O etc Source Jack Ganssle and Mike Barr Embedded Systems Dictionary 10 SMS Short Message Service is a communication service standardized in the GSM mobile communication system using standardized communications protocols and allowing the interchange of short text messages between mobile telephone devices Source IEEE Transactions on Consumer Electronics Vol 50 No 4 November 2004 11 Transceiver is a device that can transmit and receive analog or digital signals Source A J Kloneck Simultaneous sending and receiving system 12 Ignition key is the key used in a motor vehicle to turn the sw
58. n with Schmitt Trigger buffer MCLR OSC1 RC mode OSC1 In XT and LP modes OSC1 In HS mode Ports and RC4 wiih Schmitt Trigger buffer wth SMBus i For Voo 4 5 to 5 5V 4 5V lt VDD lt 5 5V For entire Voo range with Schmitt Trigger buffer OSC1 In XT and LP modes OSC1 in HS mode OSC1 in RC mode Ports RC3 and RCS with Schmitt Trigger buffer wth SMBus 14 For Voo 4 5 to 5 5V D044A 5 5 PORTS Weak Pull up Current pA Vno SV VPN Vss 40 C TO 65 C input Leakage Currant 4 D060 H pA Vss lt VPN s Voo pin at high Inpedance 0061 MCLR RAA TOCKI 35 pA Vss lt VP N 0063 05C1 15 pA Vss VPN lt VDO XT HS and LP osc configuration These parameters are characterized but not tested Data Typ column is at SV 25 C unless otherwise stated These parameters are for design guidance only and are not tested Note 1 In RC oscillator contguration the OSC 1 CLKI pin 5 a Schmitt Trigger Input is not recommended that the PIC16F57XA be driven with external clock RC mode 2 The leakage current on the MCLR pin is strongly dependent on the applied voltage level The specified levels represent normal operating conditions Higher leakage current may be measured at different Input voltages 3 Negative current is defined as current sourced dy the pin 110 PIC16F87XA 17 2 DC Characteristics PIC16F873A 874A 876A 877A Industrial Extended PIC16LF873A 874A 876A 877A In
59. n on the vehicle It is only capable to track the exact location of the vehicle by sending its exact location on the GPS receiver and through the owner In this scenario the proponents introduced a way to track the vehicle on its current location using a SMS triggered GPS tracking device that can track and immobilize the vehicle where ever the owner s location is by sending a SMS message to the device attached to the car Immobilizing the car is by cutting off engine power with a SMS code decoded by the microcontroller to instruct the relay connected to the ignition wire to open Objectives of this Design The general objective of the design is to design a tracking and security system to be implemented on a vehicle with the use of a computer and GSM module that supports GPS for locating the target through SMS message and implementing security by cutting the power source of the car using relay The following are the specific objectives of the design a To interface the device using ignition wire b To immobilize the vehicle by automatically disabling the car s engine through SMS C To locate the vehicle travelling within NCR region remotely using a cellular phone d To create a database for tracking using mySQL containing locations in NCR region Significance and Impact of the Design Most of the existing vehicle tracking devices in the market does not support immobilization This design is intended to improve the existing v
60. near Antipolo City 14 6215 121 1084 54 seconds 5 seconds Sta Lucia 46 Marikina City Ayala Boulevard Ayala corner San Boulevard Marcelino Manila 14 5889 120 9846 30 seconds 5 seconds corner San City Marcelino near SM City Manila Manila City Ayala Boulevard Ayala corner San Boulevard Marcelino Manila 14 5889 120 9847 67 seconds 5 seconds corner San City Marcelino near SM City Manila Manila City Ayala Boulevard Ayala corner San Boulevard Marcelino Manila 14 5889 120 9847 55 seconds 3 seconds corner San City Marcelino near SM City Manila Manila City Ayala Boulevard Ayala corner San Boulevard Marcelino Manila 14 5888 120 9847 48 seconds 3 seconds corner San City Marcelino near SM City Manila Manila City Ayala Boulevard Ayala corner San Boulevard Marcelino Manila 14 5889 120 9846 50 seconds 4 seconds corner San City Marcelino near SM City Manila Manila City Aurora Boulevard Aurora near SM City Boulevard Centerpoint 14 6064 121 0195 94 seconds 4 seconds near SM Sta Quezon City Mesa Manila City Aurora Boulevard Aurora near SM City Boulevard 47 Centerpoint 14 6064 121 0195 56 seconds 3 seconds near SM Sta Quezon City Mesa Manila City Aurora Boulevard Aurora near SM City Boulevard Centerpoint 14 6064 121 0197 67 seconds 3 secon
61. nition of Terms 1 Differential GPS DGPS is a technique for reducing the error in GPS derived positions by using additional data from a reference GPS Source Marine Differential GPS Satellite Navigation Trinity House 2 DTMF Dual Tone Multi Frequency signalling is used for telecommunication signalling over analog telephone lines in the voice frequency band between telephone handsets and other communications devices and the switching center Source IEEE Transactions on Consumer Electronics Vol 50 No 4 November 2004 3 GNSS Global Navigation Satellite Systems is the standard generic term for satellite navigation systems that provide autonomous geo spatial positioning with global coverage Source A Beginner s Guide to GNSS in Europe by IFATCA 4 GPS Global Positioning System GPS is part of a satellite based navigation system developed by the United States Department of Defense under its NAVSTAR satellite program Source GPS Overview from the NAVSTAR Joint Program Office Retrieved December 15 2006 5 GPS orbit fully operational GPS includes 24 or more 28 in March 2006 active satellites approximately uniformly dispersed around circular orbits with four or more satellites each Source GPS Overview from the NAVSTAR Joint Program Office Retrieved December 15 2006 6 GPS signals each GPS satellite carries a cesium and or rubidium atomic clock to provide timing information for the signal trans
62. nnector 87 System wiring Negative power Positive power terminal Relay terminal Relay terminal Installation 1 Find a secured place in the vehicle where the device can be mounted 2 Located the device wiring as shown above 3 Connect the Positive terminal to the vehicle s positive power supply that is directly connected to the vehicle s battery 4 Connect the Negative terminal to any part of vehicle s body Example bolts screws etc 5 Cut off the ignition wire of the vehicle that is coming to the ignition switch 6 Connect the other end of the ignition wire to a single relay terminal and connect the other end to the remaining relay terminal Caution Ask for a help to an authorize auto electrician for locating the wire needed to be cut off Incorrect wiring connection could damage the vehicle electrical operation 88 System Antenna Note System antenna must be connected outside the vehicles body and must always be facing towards the sky Getting Started 1 Turn on the system switch 2 The relay status indicator will tell where the system is at ON or OFF state 3 Wait for about 1 2 minutes for GPS initialization 4 When the device is ready the reading message indicator will lit up every 3 5 seconds 5 The system is now ready for any operation 89 Software Installation System Requirements OS Windows XP or Windows Vista Processor 1 0 GHz or faster XP or 2 0 GHz
63. o AT CMGD ALL lt CR gt 14 AT CMGD delete messages Note Delete all messages AT command is used to AT CGMI know the modems AT CGMI lt CR gt manufacturer AT command is used to AT CGMM know the modems AT CGMM lt CR gt model Table 2 1 AT Commands Table 2 1 only shows some of the AT commands that are available on most of the modems available in the market AT commands of GSM modems vary depending on the manufacturer but there are still AT commands that are common to every manufacturer Another prototype named SMS Commander Car Alarm System made by Kroby was a good example to base our design project It used a PIC32 microcontroller installed in the car system It has a control on off function via SMS where one can query the alarm system s on off status anytime The position of the car can be known by simply texting the car using a coded message and then the coordinates of its present location will be sent to the owner s cellular phone The car movement can be followed on line using GPRS and a compatible software The group s design can be based on how the SMS Commander enables text messages to be read and analyzed by the car Other 15 commands such as stop or lock can be easily done by the car if they will be able to make the car understand SMS messages The system in the article entitled Real Time Tracking Management System using GPS GPRS and Google earth is composed of a GP
64. of OK is received This means that there is no message saved located in index 0 of the sim card inbox AT CMGD is a command that deletes a message depending on the specified index in the sim card AT CMGD 0 deletes a message in index 0 of the sim card The testing shown above is also used in testing GLOBE Tattoo for using it as a GSM module Testing Engine Off On Request The system is also tested using the Engine Off On capability For safety purposes the test is done in a stationary vehicle in which the vehicle is turned on The proponents decided to perform this kind of test to prevent accident Even if the vehicle is stationary the immobilization is still applicable Below is a table that shows the time it takes for the server to send a confirmation message to the requesting party when Off On engine is requested 52 Request Vehicle Exact GPS Server SMS message Code Location response response sent as time time confirmation lt OFFENG gt Mapua Institute of 62 seconds 4 seconds Your vehicle is Techonlogy now Manila Point 1 immobilized Near IEEE lt ONENG gt Mapua Institute of 79 seconds 5 seconds Your vehicle is Techonlogy back to normal Manila Point 1 Near IEEE lt OFFENG gt Mapua Institute of 54 seconds 3 seconds Your vehicle is Techonlogy now Manila Point 2 immobilized Open Parking Near Basketball Court lt OFFENG gt E Rodriguez Avenue corner 40 seconds 5 seconds Your vehicle i
65. ogle Earth to verify the x and y coordinates received by GPS module Steps after data analysis are done if bugs or errors occurred during the testing 28 System Flowchart De energize Relay Open Start v Read EEPROM Re energi Close ze Relay Initialize GPS v Set message Counter to 1 v Read Message at message counter N 22 f message start with lt GPSREQ gt Send coordinates to Server If message start with lt ONENG gt Yes Re energize Relay Close v Send confirmation to Server Engine On Y If message start with lt OFFENG gt Yes v De energize Relay Open v Send confirmation to Server Engine Off Figure 3 4 GPS GSM tracking unit flow chart Increment Message counter by 1 Is message counter 4 Delete Messages di End ED 29 Figure 3 4 shows the system flowchart of the GPS tracker unit attached to the vehicle The system starts with reading the EEPROM status a value of 1 to EEPROM of the microcontroller will close re energized the relay and a value of 0 will open de energized The value of the EEPROM will only change by valid Off and On engine request Value of 1 for ONENG 0 for OFFENG After reading the EEPROM the system initialize
66. or a vehicle engine off function A reply message indicating the vehicle s engine off confirmation will be reply to the requestor Engine ON Send a message to the server staring with lt ONENG gt to request for a vehicle engine on function A reply message indicating the vehicle s engine on confirmation will be reply to the requestor Note Command messages can be only send if the program is on Otherwise it will not trigger any action 92 APPENDIX H DATASHEETS 93 Ex FAIRCHILD ZmMICONUX 2C T 1N4001 1N4007 General Purpose Rectifiers Features Low forward voltage drop High surge current capability Absolute Maximum Ratings 25 C unless otherwise noted bw MU are mbol Parameter Units ar 4001 4002 4003 4004 4006 4006 4007 Vas Repetitive Reverse Voltage 50 100 200 400 600 1000 V levy Average Rectiied Forward Curent N5 length 75 Kala 8 3ms Sige Hali Sine Wave Fr RatneforFusng _ c3 1 T Operating Tampere These ratings are limiting values above which the serviceability of any semiconductor device may by impaired Thermal Characteristics Reverse Current Rated V c 2009 Fanchic Sanmonductor Corporation Www oom 184001 14007 Few CZ 94 siapa esodang paus 00tNI LOOPNE Typical Performance C
67. or faster Vista Memory 1 0 GB RAM XP or 2 GB RAM Vista Hard Drive 20MB free space Microsoft Net Framework 3 or higher Mysql version 6 0 or higher Usb 2 0 port Globe Tattoo GSM Preparing your computer 1 Insert your Globe Tattoo GSM to any available USB port 2 Extract the file GPS zip to C of the computer that will be used as a server 3 Run windows command prompt and input mysql u root p C GPS gpsdata sql and press enter 4 Input a password if applicable Open the location C GPS GPSstart exe 6 The GPS locator program will now run 90 Getting Started User Interface ON OFF Button Map display Status indicator 1 Click the On OFF button 2 The status indicator will display whether the system is on or off 3 Once the system is on the system will continuously read message from the SIM inside the Globe Tattoo GSM Note It is normal that map display is empty upon running the program for the first time Map will be display if the system recognizes the coordinate being read Note The servers texting number will be same as the SIM card number inserting into the Globe Tattoo GSM 9 System Functions GPS Request Send a message to the server starting with lt GPSREQ gt to request for the vehicle location A reply message indicating the vehicle s exact location will be reply to the requestor Engine OFF Send a message to the server starting with lt OFFENG gt to request f
68. or in the market the proponents used 840 ohm resistor PCB Layout Figure 3 12 PIC16F877A PCB Layout 42 GPS Module Figure 3 13 GPS Module PCB Layout Relay Board Figure 3 14 SPDT Relay Board PCB Layout 43 Chapter 4 TESTING PRESENTATION AND INTERPRETATION OF DATA This chapter shows how the design is tested presented and interpreted the gathered data from the prototype This chapter also includes the validity and the reliability of the designed prototype Testing the Whole System Testing the GPS module is the part of the system to be tested first Reliability and accuracy of the module depends on the brand of the module Holux M 89 warm start at the average of 33 seconds and an average of 36 seconds cold start with less than 1 sec reacquisition time Accuracy of the module is a 2 meters Testing the module is required to verify if the module can access at least 3 satellites Failure to access at least 3 satellites will make the module to standby An initial testing for the GPS module is done through a PC connected via serial port Hyperterminal 7 0 Windows Vista Version is used to see the information gathered by the GPS module Once powered up and connected to the serial port continuous receiving of streams of data is acquired by the module Acquisition of the X and Y coordinates of the module starts when the LED in the GPS module starts to blink Blinking of the LED indicates that the module is up
69. orner 110 Avenue cor Katipunan Avenue 14 6146 121 0714 seconds 4 seconds Katipunan Pasig City Near Petron Pasig City E Rodriguez E Rodriguez Avenue corner Avenue cor Katipunan Avenue 14 6146 121 0716 68 seconds 4 seconds Katipunan Pasig City Near Petron Pasig City E Rodriguez E Rodriguez Avenue corner Avenue cor Katipunan Avenue 14 6146 121 0714 51 seconds 3 seconds Katipunan Pasig City Near Petron Pasig City Marcos Highway E Rodriguez corner Sumulong Avenue cor Highway Antipolo 14 6253 121 1255 34 seconds 3 seconds Katipunan City Near Petron Pasig City Marcos Highway corner Sumulong 14 6255 121 1256 71 seconds 4 seconds Out of Map Highway Antipolo Coverage City Marcos Highway 14 6255 121 1255 58 seconds 3 seconds Out of Map corner Sumulong Coverage Highway Antipolo City Marcos Highway corner Sumulong 14 6254 121 1257 62 seconds 4 seconds Out of Map Highway Antipolo Coverage City Marcos Highway corner Sumulong 14 6251 121 127 51 seconds 3 seconds Out of Map Highway Antipolo Coverage City Peace Village 14 6151 121 1915 62 seconds 3 seconds Out of Map Antipolo City Coverage Peace Village 14 6151 121 1915 53 seconds 5 seconds Out of Map Antipolo City Coverage 49 Peace Village 14 615 121 1915 74 seconds 5 seconds Out of Map Antipolo City Coverage Peace Village 14 6153 121 1913 66
70. ple GPS Tracking Modules simultaneously The storing function formats the receiving data into our database that is designed to provide real time query response for real time tracks and to provide search query response for the post analysis of vehicle tracks 18 Chapter 3 DESIGN PROCEDURES This chapter contains the design procedures in making the system block diagram and schematic design It shows how the system works and how each parts of the system is connected to the other parts Block Diagram GPS MODULE TX RX GSM MODULE TX RX MICROCONTROLLER POWER SUPPLY Figure 3 1 GPS GSM Tracker Unit Figure 3 1 shows the hardware block diagram of the system The hardware part is mainly the parts that are interconnected to each other by interfacing the PIC to GPS module using Level Converter Major hardware components are the PIC microcontroller GPS module GSM module relay and a personal computer GPS module is connected to the microcontroller via MAX232 19 while GSM module is directly connected to PIC These are the parts attached to the vehicle Each of this part is designed to perform specific task especially for the microcontroller to get the GPS coordinates received by the GPS module The software includes are the programs stored in the microcontroller and the software in the computer The codes in the microcontroller are lines of codes that perform parsing of the received SMS message and commanding the
71. ponents learned that GPS is interfaced to the microcontroller by means of a level converter MAX232 The idea of interfacing the modules to the microcontroller using a multichannel RS 232 driver buffer to adjust the voltage level of UART pins of the microcontroller came from the IEEE Journal entitled Real time Tracking Management System using GPS GPRS and Google Earth Microcontroller UART s doesn t recognize 2 8V as a logic high compared to other TTL pins of the microcontroller It is because the UART pins of the microcontroller use Schmitt trigger The proponents also gathered data in programming and configuring the GSM modules and the GPS module The GPS module can be configured directly to the computer by a software that supports NMEA data protocol Acquisition of location can be directly acquired only if there 21 are a minimum of 3 open satellites for the module to use Less than 3 satellites open for the module will result with no output The outputs of the GPS modules are the longitudinal and latitudinal coordinates of the module which cannot be directly used to software to show its location The proponents need to convert the raw data gathered to exactly locate the target using a map that contains the location together with a direction Design Procedure Data Gatherin Gathering Data Analysis Related Literature Programming Software Circuit design Software and Hardware Integration De
72. r Likewise SMS starts with lt OFFENG gt but will send a SMS to GPS tracker unit with lt OFFENG gt SMS containing GPS is a SMS coming from the GPS tracker unit with GPS coordinates The message will be parsed and extract the longitudinal and latitudinal coordinates It will then be compared to the database stored in the server Depending on the result of comparison a match result in the database will show the exact location of the vehicle and then sends the exact location to the one requesting non matching result will display to the server The GPS location is out of range or currently not available on the database After verifying the SMS message the mCtr will increase by 1 until it reaches mCtr 4 when mCtr 4 the system starts to delete the messages stored in the inbox then reads messages again starting from mCtr 0 32 Circuit Diagram GHD JN PPS GM Lvl 208 E POE y X WENT fe VB E VOCRFO V ANT N a 90 Lu Iu r GND 4 TO GPS ANTENNA N LT LED GND o 5 A GND T Meg Lu ak TO CAR IGNITION SWITCH L a 1 HE o uo GND GND GND Figure 3 6 Complete Circuit Diagram 33 Figure 3 6 shows the schematic diagram of the whole system It is mainly composed of PIC16F877A GPS module GSM module MAX232 and relay board GPS module PIC16F877A and MAX232 are supplied by 5VDC using a 7805 voltage regulator The circuit needs 12VDC of supply
73. r bias sss A ABC NP PR MC MERE Voltage on any pin with respect to Vas except Voo MCLR and 03V to VDO D 3V Voltage on Voo with respect ip _ Ded Voltage on MCLR with respect to Vas Hota 2 ca D ID 14M Voltage on RA with respect Ip VE mtis GN power desipaton Maximum curent cut VER Bd Inputciamp curent Ik VI 0 0r VI X20 mA Output damp current Vo D 0r Vo VIS e t m i20mA Maximum output current sunk by any WO pln tis Maximum output cument sourced by any WO Maximum current sunk by PORTA PORTE and PORTE combined Note 3 2 Maximum current sourced by PORTA PORTE and PORTE combined Note 3 Maximum current sunk by PORTE and PORTD combined Note 3 Maximum current sourced by PORTE and PORTD combined Note 3 200 mA Nota 1 Power dissipation calculated as follows Pals VOO EIOH X Vno WOH x EjVai x loc 2 Voltage spikes below Was at the MCLR pin inducing currents greater than 80 mA may cause latrh up Thus a serie resistor of 50 1000 should be used when appiying a Iow
74. rn off or on The design is intended to be used as a tracking system to vehicle carrying the device It is designed to track the vehicle with the use of a cell phone and a PC and to secure the vehicle if it is tracked by sending a message to disable the engine The car can be turned on again when a requested engine on is received by the device The design is mainly composed of a GPS module GSM module PC relay and microcontroller GPS module is used as a receiver to access the GPS satellite and transmit the information gathered Microcontroller is used to verify the sent message received by the GSM module and parse it to check the kind of operation to be done The feature of this design is tracking of vehicles from a cell phone to computer by sending a SMS message to the computer and then to car and when it is received and verified by the tracker unit the GSM module will send the location of the vehicle by its longitudinal and latitudinal position by SMS to the computer The computer will compare the coordinates received and display the exact location of the vehicle through a map The computer now sends a message to the sender s cell phone on the exact location of the car When engine off is requested the relay will automatically open to cut the electricity supply to the car Engine on request will automatically close the relay Statement of the Problem Vehicle tracking using modern devices available in the market doesn t include immobilizatio
75. roller contains codes written in basic and Visual Basic NET for the server The proponents used EEPROM of the PIC to save the status of the relay board The status of the EEPROM will only change if lt ONENG gt lt OFFENG gt are sent for request Testing Testing of the software is done after the hardware part is finished Testing of the software in the microcontroller is done by sending a SMS message request code in the GSM module Software testing in the computer server is done by sending a SMS coordinates to the GSM module to verify its output by using Google Earth 24 B Hardware a Data Gathering This is the process of acquiring information about the hardware components to be used Information includes hardware specifications interfaces configuration and needed power supply b Review of Related Literature Reviewing related literature will form a foundation for the proponents in designing the circuit diagram The proponents can gather information on the interfaces of the hardware components programming language applicable problems encountered in designing the circuit diagram and the expected output from each of the components in the diagram A review on the AT commands is also done c Circuit Design After performing the procedures before circuit designing the proponents have already gathered vital information regarding the design of the circuit diagram The schematic diagram is composed of GPS module GSM module PIC1
76. s Katipunan now Avenue Pasig immobilized City lt ONENG gt E Rodriguez Avenue corner 58 seconds 4 seconds Your vehicle is Katipunan Avenue Pasig back to normal 53 City lt OFFENG gt E Rodriguez Your vehicle is Avenue corner 110 seconds 5 seconds now Katipunan immobilized Avenue Pasig City lt OFFENG gt Jollibee along Your vehicle is Marcos 85 seconds 3 seconds now Highway immobilized Antipolo City lt ONENG gt Jollibee along Marcos 40 seconds 3 seconds Your vehicle is Highway back to normal Antipolo City lt OFFENG gt Jollibee along Your vehicle is Marcos 47 seconds 3 seconds now Highway immobilized Antipolo City Table 4 3 Engine Off On Testing Table 4 3 shows the testing in Engine Off On request The tests are done together with the GPS request code Parts of the GPS test are done with Engine Off On request The proponents first tested the GPS request code and after recording the data some places are also tested for Engine Off On request The GPS response time is the time taken by the GPS tracker unit to reply to the server while server response time is the time taken by the server to send the confirmation message to the requesting party Adding both of the response time 54 is the time taken by the whole system to relay the confirmation message to the requesting party The average time for the GPS response time is 64 seconds while the
77. s the GPS module If the GPS is initialized it will set mCtr for reading the message from the SIM inbox Reading of SMS message starts from mCtr 1 and parse the message for possible request code A SMS starting with lt GPSREQ gt allows the GSM module to send a SMS message to the server containing the GPS coordinates SMS starting with lt ONENG gt activates the relay by supplying the coil of the relay SMS starting with lt OFFENG gt de energized the coil of the relay disconnecting the contacts of the relay to the coil thus making the relay in open state A SMS that doesn t start with any pre defined codes by the system will be deleted After verifying SMS message mCtr will increase by one and check it again for possible request code until it reaches to mCtr 3 Reaching mCtr 4 will delete the messages in the inbox then go back to mCtr 1 If the GPS module is not initialized or the switch is turned off the flow of the system will end 30 Start Initialize port connection ul Set message counter to 1 v Read Message at message counter f message starts with lt GPSREQ gt f message starts with lt ONENG gt f message starts with lt OFFENG gt f message starts with Engine On f message starts with Engine Off f message starts with GPS Send lt GPSREQ gt command to GPS Send lt ONENG gt command to GPS Send lt OFFENG g
78. seconds 4 seconds Out of Map Antipolo City Coverage Peace Village 14 6153 121 1915 42 seconds 5 seconds Out of Map Antipolo City Coverage Table 4 1 System Testing Table 4 1 shows different location acquired by the GPS The tests are performed in different locations with the server located at Antipolo Rizal Each of the location is tested five times and gathered its GPS coordinates together with the server response time to the request and GPS response time GPS response time corresponds to the time taken for the GPS device to reply to the server while the server response time is the time taken for the server to reply to the requesting party In different locations there are different GPS and server response time It depends on where the location of the vehicle is open or closed area GPS response time takes longer when the vehicle is in a closed area and faster when it is in an open area The average time it takes to reply to the servers is 57 4seconds The server response time takes longer when the network is having traffic but in normal operation the server response time takes only about 4 2 seconds Adding both responses time will give the total time it takes to receive the tracking request from the time a request is sent Tests done in locations listed above are tested in one spot The table shows that there is a difference between the coordinates that are tested in same location This is due to the GPS accuracy 2m whi
79. si be taken account separately All characteristics are measured wih a 0 334 F across Input and 0 1 27 capacitor across the output electrical characteristics at specified virtual junction temperature Vj 10 V Ir 40 mA unless otherwise noted LATELESC v E ELE OG ee meee e v vonage regulator M EO TITA UR RE NE NON NUN Sen pem LL vol reg lation PET 50 mem EN Meavexv Tew ize PEIETTIT 9 3 T Pulsetesting techniques maintain Ty as close In Ta as possible Thermal effects must be taken account separatety All characteristics ane measured 0 334 F capacitor across fhe input and 0 1 8 capacitor across the output 100 AVLAX LA 5V Powered Multichannel RS 232 Drivers Receivers General Description Features The MAX220 MAX249 family of line drivers receivers is Superior to Bipolar intended for sl EIA TIA 232 and V 28 V 24 communica from Si Power tions interfaces particularly spplicafions where amp 12V ia HEY and y not avadable i ive Mode i These parts are especially useful in battery powered sys e m tems since their low power shutdown mode reduces gt 2 power dissipation to less than S5uW The MAX225 Meet All EIA TIA 232E and V 28 Specifications MAX233 MAX235 and MAX24S MAX246 MAX247 use Multiple Drivers and Receivers no externa
80. sign Testing Figure 3 3 Design Procedure Flow Chart Hardware 22 Figure 3 3 shows the graphical view of the design procedure used by the proponents In order to systematically create the proposed topic the proponents designed a procedure to follow The procedure is divided into two parts the hardware and the software A Software a Data Gathering The software part starts from the gathering of required data including the hardware specifications of the modules to be used for programming purpose In this way the proponents can decide on what programming language is best to use in developing the software part b Data Analysis Data analysis is done to evaluate and verify the hardware specifications to identify and finalize the programming language to use This is also done when testing the finished prototype Gathered data are analyzed and verified if the output of the system is correct c Simulation Simulation of algorithms or routines in the software is done especially in the microcontroller programming which uses routines like decoding SMS message and conversion of the GPS received 23 coordinates to decimal degrees This will reduce errors programming the hardware components Programming Programming of the whole system is done after the simulation of routines or algorithms are verified and tested to be correct Programming of the whole system includes the programming part in the server and microcontroller Microcont
81. t command to GPS Send confirmation message to user Engine on Send confirmation message to user Engine off Get the coordinates and search in the database Increment Message counter by 1 NGA Is message counter 6 Delete Messages Are the coordinates available in the database Send location to user Locate the coordinates Send notification to user Location was out of coverage Is the system Ready B NG il End Figure 3 5 GPS GSM PC server flow chart 31 Figure 3 5 is the PC server flow chart of the system The software in the server starts with initializing the port of the GSM module which is connected to USB port After initializing the software will check if the on button is pressed or not Pressing the ON button will start the program to read and delete messages and setting mCtr to 0 Starting from mCtr O which is the index of the message in the SIM inbox checks for possible request code A SMS starting with GPSREQ commands the server to send a SMS message to the GPS tracker unit containing GPSREQ and saves the mobile number of the one requesting SMS starting with lt ONENG gt will also send a SMS message to GPS tracker unit containing lt ONENG gt and will also send a SMS message to GPS tracker unit then save the mobile number of the sende
82. terface wing NMEA protocol or MTE extension protocol UART port is capable of 4800 to 115200 baud rate 4 1 Protocol 89 is default to support standard NMEA 0183 protocol In addition a sene MTE extensions messages have been developed that can be usei extended capabilities common to many applications N 411 NMEA Protocol M 89 is capable of supporting following NIMFA mm DOP and active satellite GNSS Satellites im view pr Recommended minimum specific GNS5 data PN Course Over Ground and Ground Speed om 123 M 89 HOLUX GPS Module senes THLTEDEAME NOE 41 2 MTE NMEA Packet Format pos em os e Maximum packet length is restricted to 255 bytes The star symbol is used to mark the end of Data Field 124
83. to proper requesting number 76 messagelocation index Timer Locate Start Timer SendingMes Start Exit Sub End If Next MainStatusLabel Text No Command Request found If MainSwitch Then Timer AutomaticMode Start End If End Sub Private Sub Timer Locate Tick ByVal sender As System Object ByVal e As System EventArgs Handles Timer Locate Tick Timer Locate Stop MainStatusLabel Text GPS Coordinate found locating Dim gpsN As Double Dim gpsE As Double gpsN Val message messagelocation Substring 8 7 gpsE Val message messagelocation Substring 20 8 locate gpsN gpsE End Sub Private Sub locate ByVal gpsN As Double ByVal gpsE As Double Dim myConn As New MySgqlConnection Dim myCommand As New MySqlCommand Dim myData As MySqlDataReader Dim xloc As Integer Dim yloc As Integer myCommand Connection myConn myConn ConnectionString server localhost user id root password dan database gps Try myConn Open Catch ex As MySqlException MessageBox Show Error in opening database End Try myCommand CommandText select from mapindex where gpsn amp gpsN amp and gpse amp gpsE 77 myData myCommand ExecuteReader If myData HasRows False Then myConn Close MessageBox Show The GPS location is out of range or currently not available on the database GPS Error MessageBoxButtons OK MessageBoxIcon Error nameloc Your vehicle location is out of coverage or not

pc - based gps tracking with immobilization capability through sms

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