Programmable Syringe Flow Regulator
Contents
1. 22 DESIGN PROCEDURES START Statement of the Problem State Possible Solutions Best Most Appropriate Solution Y Creation of Proiect Plan Y Finalized Materials Gathering Project Design PCB Application Prototype Testing Y Meet Requirements Objectives Review Requirements Design Adjustments Figure 3 1 Design Procedures 23 In order to make the system developed there are basic processes and tool that the proponents used in making the proposed system design These processes are then taken step by step for guidelines in order to arrive at what is being set and expected And those processes being used are the following 1 Materials Gathering Since the project has already commercial implementations it is assumed that all materials that will be used are already available in the local market The best good option is to buy at the stores that sell in lowest prices but don t compromise the quality and can stand at a long period of time Location can be a factor to the prices so going to places like Quiapo specifically in Raon part where a lot of the needed semiconductor goods needed are available For component parts stores like Alexan are of good choice Also visit some mechanical shops for helical screw 2 Design Creation PCB Application After completing the materials needed and finalized the created project plan actual implementation and PCB application are the next steps2. If PORTD 1 0 Then GoTo zero Numeric 0 Return End 66 APPENDIX D User s Manual Programmable Syringe Flow Regulator User s Manual SAFETY GUIDELINES 1 Avoid shaking or dropping the device 2 Check first if the cord labelled with 110 is connected to a transformer before plugging 3 Avoid the stepper motor and the main controller black box in getting wet 4 Be careful in attaching the syringe to the holder to avoid accident 5 Make sure that there is a container to catch the liquid coming out of the syringe during process 6 Avoid excessive pulling of the main controller from the output brown box so that the wires would not be damaged HOW TO USE 1 Connect the plug according to its corresponding power requirements 220V and 110V for the main controller and syringe D respectively 2 Press the power button Hl to turn on the system NOTE See to it that the syringe is already filled with liquid 3 After doing step 2 press asterisk to direct the display P to the flow rate input display 4 Atthe flow rate input display enter the desired flow rate from 0 1 to 9 9 ml min It will automatically start upon finishing the input NOTE Sound coming from the stepper motor can be heard when it is starting its operation 5 Wait until the contents of the syringe completely have been diffused Press Reset buttons l if you want to stop the operations 6 Turn the power button off and un
3. 27cevemotenmenctsc Thee mianige are Bit Ste at ove vt ob Pe ren Lag ct ayy ATEOA t ac orc nuts he ineat enne gf en Saeed on Tao dm T anctor tegen CT 10 ty C Py Th eto tro ceoth vtae eg rem vh oui se comm ec oF 3009 toon EE prec coles dos cec Eegen Thermal Characteristics r scasen cte cete Total Device Dissipation 350 Derale above 25 C r1 28 o WE d sl EE amens wem x 37 Devkcervuisd es PRA PC LU X EAR Denice Tag so RA POR 24 emer 3 ren 1 Zen meaning pad eoe ccce wee fon 1598 Feb bere Cetengen VcCCClZd W27ZZLEWW VZZCZNd 59 NPN General Purpose Amplifier continues Electrical Characteristics 1 27cusuotewuncme DURECH OFF CHARACTERISTICS Cofactor Cutoff Current EO V h eO SOV eO T e 1570 Ce CS Sei Ce NN ON CHARACTERISTICS keai rA Veg e 10 V k e 1 0 mA Ves e 10V es 10 mA Veg e 10 V ke 10 mA Veg e 10 V T e SC le 152 mA Veg 10 V ic 150 MA Ves e 1 0 10v Hc m Voksge 502 mA ia 5C mA E LE 502 mA ia 5C mA 2 0 SMALL SIGNAL CHARACTERISTICS keXmAVaemv ECH Ospzcwamae OA 55 Siess US O 3j ke mA e EES 755 je 100 pA Vee e 10 V Rs 1 0802 fo iO she J quency input imosdance f 300 Vez Vic 30 V Vigo e 05 V 150 mA hy 1 mA ERC ku se m 15 mA Pise Tert Palen ett 0 gr Daty Cue 2 D Spice Model NPN 12914 34f ie Ege i W s 03 Bf 265 S New 377 see 14 Saf Mie 2547 Xie
4. 0 003333 1 4866667 0 003333 1 8666667 0 003333 40 Table 4 2 shows that for every solution the researchers measured the output volume that came out in 1 minute with respect to the input rate The output volume is measured using a pipette Based on table 4 2 the output volume is almost the same as the input including the viscosity levels of glucose glycerol and coconut oil But due to some constraints the ideal output cannot be achieved Formula for AVE SEM SE z T SEM XN 41 C Cost Analysis Programmable Syringe Flow Regulator PSFR SYR 1200 Features Timed Addition Runs up to a 16 step program that adds multiple reagents to multiple reactors at user specified rates Program Loader This program executes a user entered sequence of syringe pump commands Remote Control Places every action of the syringe pump under the direct control of an attached PC Update Manager Allows new programs to be uploaded into the syringe pump controller via Email or web site download Infuses and withdraws Selectable pump rate units ul hr l min ml hr ml min Change pumping rate and direction while pumping Syringe purge mode will infuse or refill syringe at top speed to purge air from the line or to fill the syringe Audible buzzer can be programmed to alert when an alarm condition occurs or the pumping program completes Power failure mode restarts a pumping
5. 2006 Microprocessor A digital integrated circuit device that can be programmed with a series of instructions to perform specified functions on data Mano and Kime 2003 PIC Programmable Interrupt Controller Handles interrupts on a priority basis It accepts service requests from the peripherals Mano and Kime 2003 Plunger Part of the syringe responsible for creating the vacuum to draw up liquids and then to discharge them Dorland and Rhodes 2002 Power Supply A system that converts AC current from the wall outlet into the DC currents required by electronic circuits Bakshi and Godse 2004 Programmable Capable of being programmed for computer processing Floyd 2006 PSOC Programmable System on Chip A family of mixed signal arrays made by Cypress Semiconductor featuring a microcontroller 15 and configurable integrated analog and digital peripherals PSoC is a software configured mixed signal array with a built in MCU core Pulley A mechanism composed of a wheel with a groove between two flanges around the wheel s circumference Pulleys are used to change the direction of an applied force transmit rotational motion or realize a mechanical advantage in either a linear or rotational system of motion Beer and Mazurek 2008 Regulator Keeps the output voltage constant inspite of changes in load current of input voltage Bakshi and Godse 2004 Reset The state o
6. 5 Bre6 252 Nowl i00 ie Ace Cjce7 328p Me 475 View 75 Fce 5 Cjee22 0 0 Mjew 377 s 75 Tred Sin Tteiii 1p iffe 6 Viel M Rd 10 vecccAZd VCCCCLSMWIW WZzzZNd 60 NAN YA PLASTICS CORP SPEC NO LM069 0 ELEC MATERIALS DIV SPECIFICATION DATE DEC 01 1997 LCO DEPARTMENT SHEET NO 1 18 U S MARKETING ARM MARK PRODUCTS CORPORATION 800 N EDGEWOOD AVENUE wooo DALE IL 60191 gt 630 787 9089 FAX 630 787 9015 SPECIFICATION OF 20x4 LCD MODULE PRODUCT NO LM_ 74_069_ SPEC NO LM069 0 EDITED ON DEC 01 1997 REV DATE RO BY 12 01 97 61 NAN YA PLASTICS CORP SPEC NO LMO69 0 ELEC MATERIALS DIV SPECIFICATION DATE DEC 01 1997 nivis SHEET NO 2 19 1 MECHANICAL DATA 1 Product No LM 74 O69 2 Module Size 77 0 Wmm x 47 0 H mm x MAX10 0 D mm W O EL B L 3 Dot Size 0 42 W mm x 0 46 H mm 4 Dot Pitch 0 47 Wmm x 0 51 H mm 5 Number of Characters 20 Ww x 4 H Characters 6 Character Format 5 w x 8 H Dots 7 Duty 1 16 8 LCD Display Mode STN O Gray Mode O Yellow Mode O Blue Mode FSTN D Black and White Normal White Positive Image D Black and White Normal Black Negutive Image Rear Polarizer O Redective O Transflective O Transmissive 9 Viewing Direction D 6 O clock 012 O clock D O clock 10 Backlight o w o B LED DEL 11 Weight W O B E 33 89 Note LM_74_069_ Option Anti Glare Wide Temp Double Power Wide Temp Single Power Backlight Type
7. K None M LED N EL Polarizer Type eile R Reflective p m S Transfiective T Transmissive P Transflective High Transmissive Mode Vlew Angle Gray 6 Clock Gray 12 Clock Yellow 6 Clock Yellow 12 Clock Blue amp Clock Blue 12 Clock Normally Black 6 Clock Normally Black 12 Clock Normdly White 6 Clock Normally White 12 Clock N rocoo merIrommoou REV DATE RO BY 12 01 97 62 APPENDIX C Program Listings Device 16F877A Declare XTAL 4 Declare LCD_TYPE 0 Declare LCD_DTPIN PORTB 0 Declare LCD_ENPIN PORTB 5 Declare LCD_RSPIN PORTB 4 Declare LCD_INTERFACE 4 Declare LCD_LINES 2 Print At 1 1 Initializing Print At 2 1 Standby DelayMS 400 ADCONI 7 Set PORTA DIGITAL OPTION REG 7 0 DISABLE INTERNAL PULLUPS ALL DIGITAL true TRISA 000011 TRISC 00000000 TRISD 00000111 TRISB 00000000 TRISE 000 PORTC 0 Symbol BUZZ PORTB 7 Symbol ENBL PORTC O Symbol MOTOUT PORTC 1 Symbol MOTHOME PORTC 2 Symbol SWOUT PORTA 0 Symbol SWHOME PORTA 1 DelayMS 500 Dim Scari As Byte Dim VALID As Byte Dim Numeric As Byte Dim POINTS As Byte Dim ONES As Byte Dim INTERVAL As Byte Dim SCARINTERVAL As Word Dim SCARRATE As Byte Dim TIMEDELAY As Word Dim RATE As Byte GoSub INITMECH MAIN Print At 1 1 Auto Syringe Print At 2 1 Start DelayMS 400 GoSub KEYPAD If Numeric 11 Then GoSub BEEP GoTo BEGI
8. TOTAL P19 705 00 kA IP Re IN Re m 49 APPENDIX B Data Sheets MICROCHIP Devices Included In this Data Sheet PICISFST3 PICISFETS PICISFBTA PICISFETT Microcontroliar Core Features High performance RISC CPU Only 35 single word Instructions to learn Al single cycle instructions except for program branches which are two cycle Operating speed OC 20 MHz clock Input OC 200 ns Instruction cycie Up to SK x 14 words of FLASH Program Memory Up to 368 x 8 bytes of Dats Memory RAM Up to 256 x 8 bytes of EEPROM dats memory Pinout compatible to the PIC TECTSE TSB 7E 77 Interrupt capability up to 14 sources Eight level deep hardware stack Direct indirect and relative sddressing modes Power on Reset POR Power up Timer P WRT and Oscilator Start up Timer OST Watchdog Timer WOT with Its oan on chip RC oscilistor for reliable operation Programmable code protection Power saving SLEEP mode Selectable oscilator options Low power high speed CMOS FLASH IEEPROM technology Fully static design In Circult Serial Programming CSP vis two pins Single SV in Circut Serisi Programming capability In Circult Debugging via two pins Processor read write access to program memory Wide operating voltage range 2 0V to 5v High Sink 2ource Current 25 mA Commercial and industrial temperature ranges Low power consumption 2mA typical sv 4 MHz 20 pA typical 3v 32 kHz
9. 15 S00MA V 10V C 0 23pF Co D 1p F unless otherwise specified Cond MC7S05 LM7805 Output Voltage Vo SOMA lt lo s 10A Po s 15W Vi 7V to 20V 475 Vo 7V t0 25V 1 Une Regulation Note Regine T 25 C beer of eee te 750mA GuiescentCurent e T 25 C O lo 5 1 Quiescent Current Cnange a m 3 a Vre 7V lo 25V Avar i sm Cd Output Nolse Vonage f 10Hz to 100KHZ TA 25 C pes Je Jecke SE ouput Reseiance ro mee Peak Curent kees Note 1 Load and Ine regulation are specified st constant Junction temperature Changes in Ve due to healing eMects must be taten into account separately Pulse testing with low duty Is used 3 E E E ys wc EINEN Fas ws EINEN EJEJ EE Fus pas KANEEN Fas Fe EE KSE B az Get tz 54 1N4001 1N4002 1N4003 1N4004 1N4005 1N4006 1N4007 TMAUDA and 184027 are Preferced Devices Axial Lead Standard Recovery Rectifiers This data eet provides informatica on sabmiziature size axial load mounted rectifiers for zezersi purpose low power applications Meohantoal Charsoterictioc Case Epoxy Molded Wetsbt 0 4 gram approximately Finish All External Surfaces Corrosion Resistant and Terminal Leads ao Readily Soldszable Lead and Mounting Surface Temperature for Soldering Purposes 220 C Max for 10 Seconds 1 16 from cass Skipped in plastic bags 1000 per bag Avzilable Tape 2nd Reeled 5000 par reel by adding a RL
10. EE EE EH EE Ee 2 3 2 3 Pewecomeams rer Por EE EE E beggen 38 gees 38 matuctons 25 metuctons 1995 Microchip Technology Inc 52 aes FAIRCHILD EH SEMICONDUCTOR www fairchildsemi com MC78XX LM78XX MC78XXA 3 Terminal 1A Positive Voltage Regulator Features Dap Cuzrent up to LA Ouspat Voltages of 5 6 9 10 12 15 18 24V Thermal Overload Protecson Circus Protection Dram Transistor Safe Operates Area Protection Internal Block Digram C2001 Farid Semiconductor Corporation Description The MCCL MEM ECH A serios of tros terminal positive regulators are available iz the TO N0D PAK package ezd with several fixed cutput voltages making them usefal in 2 wide range of applications Each type employs interns current limiting termal skut dowa and safe operating 2263 protection making it essentially indesmuctible If adequate be t sinking is provided they can deliver ove 1A output current Although desizzed primzrily as fixed voltage resisters these devices cam be ured with extemal componant to obtain adjustable voltages and currents 1 input 2 GND 3 Output 53 MCTEIOULMTEDOUMC TERA Absolute Maximum Ratings for Vo 24V Thermal Resistance Junction Cases TO 220 Thermal Resistance Junction Alr TO 220 operating Temperature Range Srorage Temperature Range Electrical Characteristics MC7805 LM7805 Refer to test circuit Dr Ty lt 125 C
11. Time Volume Accuracy Test Each solution undergoes three trials of test to compare that the resulting time will be exactly or nearly the same as the computed one The test shows that the time where the syringe finishes dispensing the solution is approximately the same as the results in the computed value The ideal time is computed using the formula KT rate mL imin 1min x 60sec Computed result All other unit will be cancelled except the second Repeat this by substituting only the rate WATER GLUCOSE GLYCEROL ETHYL ALCOHOL COCONUT OIL Table 4 1 Time Volume Accuracy Test Results 37 Table 4 1 shows that the time 0 1mL finishes 1mL of solution ranges from 9 25 to 10 02 The time 0 5mL finishes 1mL of solution ranges from 1 56 to 2 01 The time 1 0mL finishes 1mL of solution ranges from 0 55 to 0 59 The time 1 5mL finishes 1mL of solution ranges from 0 38 to 0 44 The time 2 0mL finishes 1mL of solution ranges from 0 28 to 0 30 As the viscosity of the liquids is concerned the time to fill up 1mL with respect to the input volume is almost the same as the computed time but due to human error there are some fluctuations in the results COMPUTED RESULTS o M 599 9988 sec x 10 minutes Ot mL i min 9 00166667 mL 1 min 60 sec sec LINE go 785 onsets auch ees 0 5 mL 1min 500g33347L 1min 60 sec sec EE ge LLSMe ce 59 99988 sec 1 minute 1 0 m
12. application describes the use of single microprocessor to control the speed direction and rotation angle of a stepper motor This single microprocessor controls the stepper motor by sending pulse sequences to the motor winding in response to control commands Commands executed by the code in this application include single step the motor in a clockwise or counterclockwise i e rotate the rotor through a certain number of degrees run the motor continuously at one of four speeds 25steps second 100steps second and 400steps second in a clockwise or counterclockwise direction and stop the motor This is a general purpose application for which a degree of adjustment or program ability is required to meet the needs of specific processor end their performances VISCOSITY Viscosity is the main parameter that characterizes the flow of liquids in an industrial process and its measurement provides information on the resistance to flow in tubes 20 The syringe is similar to a piston pump This type of pump has a piston inside a cylinder like container in which it serves as the pusher for the contents of the liquid This syringe plunger serves as the piston and its container serves as the cylinder According to the book entitled Biological Process Engineering considering a piston accelerating within a cylinder when it moves slowly there is hardly any pressure increase in the liquid ahead of the piston The entire column of the liquid mov
13. devices available in the market as well as the Programmable Syringe Flow Regulator It explains the differences of the devices in terms of their main features specifications and setup It also proves that the Programmable Syringe Flow Regulator is much cheaper than the devices readily available in the market 43 Chapter 5 CONCLUSION AND RECOMMENDATION This chapter is composed of the researchers conclusions after developing the Programmable Syringe Flow Regulator through thorough research and analysis Consequently the design has a room for improvements that can be enhanced by fellow and future researchers Conclusion After the design testing it is concluded that the Programmable Syringe Flow Regulator can dispense liquid in a constant rate regardless of its viscosity And it is also concluded that 1 The Programmable Syringe Flow Regulator can dispense the same actual volume in a given period of time based on table 4 2 the Input Output volume comparison test since the data show that there is a small difference between the expected output and the measured output 2 The Programmable Syringe Flow Regulator is cheaper than those similar devices available in the market which is illustrated on figure 4 3 Cost Analysis The cost is much cheaper compared to those in the market because it is made using local components Component breakdown can be seen in Appendix A 44 Recommendation The following suggestions
14. lt 1 pA typical stancoy current 1995 Microchip Technology Inc PIC16F87X 28 40 pin 8 Bit CMOS FLASH Microcontrollers OSCM LKOUT RCETICSOTICK a ROUTICGIOCE ee RCUCCP oe ROUSSEL oe RDAPSPO ADIPI e a PIC16F877 874 LEHLELHLETTELELIET I Peripheral Features TimerC 8 bit timer counter wih 5 bit prescaler Timert 16 bit timer counter with prescaler can be incrementec curing sleep vis external crystalicicck Timer2 amp bit timericoumter wih 8 bit period register prescaler and postscaler Tao Capture Compare PWM modules Capture Is 16 bit mar resolution is 12 5 ns Compare is 16 bit max resolution is 200 ns PWM max rezciu on is 10 58 DDR mult channe Analog to Digital converter Synchronous Serisi Port SSP with 2e Master Mode and C Master Sisve Universal Synchronous Asynchronous Recelver Transmitter UBART 3CI wih 9 bit address detection Parallel Stave Port PSP amp bils wide with external RD WR and CS controls lt 0 44 pin only Brown out detection circultry for Brown out Reset BOR 51 PIC16F87X Key Features PiCmicro Mid Range Reference PIC18F873 PIC18FB874 PIC16F878 PIC10F877 Manual LEET DACH Sc a0 mnz DC 20 mmz Resets snd Delays POR BOR POR SOR POR SOR POR BOR 8 PWRT OST EWERT OST PWAT OST FLASH Program Memory ax 14 bit words DER RR 3 amp 39 him 3 ER n 1 yas
15. name implies wherein the input is being processed The user will be using the 0 9 digit keypad to enter flow rate which will be processed inside the PIC microcontroller After sending the input the PIC microcontroller will then make necessary computations needed in order to create an output This output will be transferred first to the PSOC microcontroller in order to make the signal from the PIC 26 microcontroller gains strength Another purpose of the PSOC microcontroller is to synchronize the stepper motor driver and PIC microcontroller due to clock timing issues between the two The output from the PSOC microcontroller will serve as the input for the second part of the system which is the white box part This white box serves as the output of the system that is composed of different parts such as stepper motor and its driver and the helical screw The output from the PSOC microcontroller will be interpreted by the stepper motor driver for it to be able to make the stepper motor runs The actions applied by the stepper motor will either turn the helical screw where the syringe is attached go back and forth 27 b Schematic Diagram D SES Stepper Motor Driver Figure 3 3 Microcontroller Interface Schematic Diagram 28 Figure 3 3 shows the schematic diagram of the circuit This gives a detailed illustration of how each circuit component is to be interconnected to the other Due to space constraints the researchers subdivi
16. suffix to ths part number Available iz Fan Fold Packaging 3000 per box by adding a FF saf x to the part number Polarity Cathode Indicated by Polarity Band e Masking IN4001 IN4002 1N4003 IN4004 IN4005 1N4006 IN4007 MAXIMUM RATINGS ON Semiconductor hitp onceml com LEAD MOUNTED RECTIFIERS 50 1000 VOLTS DIFFUSED JUNCTION x 1 23 4 5 60r7 YY Yey WW eWork Weet Pest Repedive Reverse citage pp 800 Vols Working Peak Reverse Voltage e DC Blocking Voltage Non Repedtve Peak Reverse Voltage 720 hsifwsve single phase EC Hz rua Reverse votage vam 356 7o seo 2o m so 7o veis Average Rectfied Forward Current single phase resistve icad SO Hz TA EICH Non Repedive Peat Surge Curent ae E Indicates JEDEC Registered Data ORDERING INFORMATION See Arte ei order end tg itameton on page 2 ot fre deh stent Pretecred arces are fecurrmerded dwices for tire use ered eg cos ti ulus 55 1N4001 1N4002 1N4003 1N4004 1N4005 1N4006 1N4007 ELECTRICAL CHARACTERISTICS Bee mi Madmum instantaneous Forward voltage oe lp 1 0 Amp T 25 C Maximum Full Cycie Average Forward Voltage Drop Vren lo 1 0 Amp T EC 1 inch leads Madmum Reverse Current rated dc voltage HA T 28 C T 107 C Madmum Fuli Cycie Average Reverse Curent lg 1 2 Amp T indicates JEDEC Registered Data ORDERING amp SHIPPING INFORMATION C
17. 10V AC voltage NOTE Never plug the driver in a 220 V AC power 35 Chapter A Testing Presentation and Interpretation of Results This chapter is composed of several results to the tests done to the design in order to find out the performance of the syringe The following are done in order to compare and evaluate the gathered results With this the following results may also be compared to the computed values The researchers performed different test in order to find out the change in speed and the length of the process of the syringe regulator The syringe used was a 5 mL syringe the syringe size that was referred to us to be used in this design The chemical solutions used for the test are distilled drinking water H20 ethyl alcohol C H5OH coconut oil glucose C amp H420e and glycerol C3Ha03 A Time Volume Accuracy Test This test aims to know whether the time that the prototype would take in order to consume the desired volume of liquid is accurate or not Procedure for Time Volume Accuracy Test 1 The syringe is filled with the sample liquid 2 The desired flow rate is set 3 A stopwatch is set to zero and starts when the plunger touches the end of the aluminum bar 36 4 The researcher stops the time of the stopwatch as the syringe finishes filling 1ml 5 Record the time Results for Time Volume Accuracy Test The table below represents the results gathered after conducting the
18. 17 18 Noll W 1940 Journal of Applied Physics Vol 11 Issue 1 75 80 Potter M C and D C Wiggert 1990 Mechanics of Fluids 1 Edition Prentice Hall U S A Pyzdek T and P Keller 2003 Quality Engineering Handbook 2 Edition Revised and Expanded Rhodes D and S Rhodes 2002 Dorland s Medical Equipment Word Book for Medical Transcriptionists Servay R and J Jewett Jr 2004 Physics for Scientists and Engineers with Modern Physics 6 Edition Sherman A and L Russikoff 1996 Basic Concepts of Chemistry 5 Edition 46 Buiochi F Higuti R T Furukawa C M and Adamowski J C 2000 U trasonic Measurement of Viscosity of Liquids 525 528 Kang Z L and Qu S F 1994 A New Methodology for Using Single Microprocessor to Control DC Stepper Motors 543 545 47 APPENDIX A List of Materials and Price Listings 48 QUANTITY IN PCS MATERIAL PRICE 3 10K ohms resistor P1 00 1 LCD Monitor P2 834 00 PIC16F877A 28 40 pin 8 bit CMOS Flash Microcontroller P303 00 CY8C29466 24PXI 24 Pin PSOC Microcontroller P405 00 P1 650 00 P10 500 00 P2 500 00 P250 00 P200 00 P200 00 P38 00 P48 00 2 3300uF Capacitor P382 00 pt aK ohmsResistor Poso pa inde i tO 1 LM78053 Terminal 1A Positive Voltage Regulator P5100 1 Black Plasticcase PI5000 1 Wooden Boxcase P10000 Plastic Glass Cover P50 00 5 CC Syringe Injection P17 00 Wire P25 00
19. 9 Ale Diode po ioe 00 LL LM7805 3 Terminal 1A Positive Voltage Regulator _ BENE a Black Plastic Case 1 Wooden Bo Ces 1 1 PPlsticGlassCover i y O pS CC Syringe Injection 10 ft Table 3 1 List of Materials e e e e le Table 3 1 enumerates the different materials used in developing the Programmable Syringe Flow Regulator Also included in the table are the quantities of the items used in the design 32 SOFTWARE DESIGN SYSTEM FLOWCHART Input Flow Rate Start Operation Evaluate input Define speed of the stepper motor Stepper motor Running Figure 3 6 System Flow Chart 33 Figure 3 6 from the previous page shows the overall design flow chart of the software It also illustrates at the same time what are the steps that the system will take accordingly In brief summary based on the figure shown the system upon turning the power on a LCD screen will display a certain message about what flow rate that the user wanted The user will decide whether the inputted flow rate is correct and want to start operation or not In some cases improper or incorrect inputs are entered but these can be solved by entering again the desired flow rate After the system has received the input it will be processed and analyzed by the program in the MCU The output is expected after the MCU has successfully carried out the operation This output varies accordingly to the input 3
20. AM ik 42v e CONN L Assembty Location M ain Device Number x 0 1 2 4 6 7cr8 ez Lass exon en Lane s200Tape amp Reet eg Lass Laugs einem Lesen L setze rees zesiee ez Losse Less ec Lanz Lessel ee Les Lsusgs _ rees Loes Loseszze Prefecred Gevioes are fecummended duces oc Map use eral bet con ti value 57 1N5400 thru 1N5408 MAXIMUM RATING Ven so sco Vm Vr 4 2 Leads 7 105 C Nom repettive Fesk Surge Current 200 ore cycie Amp Surge Applied at Rates Load Conditions THERMAL CHARACTERISTICS Charaoterictio Thermal Resistance Junction to Ambient PC Board Mount 12 Leads ELECTRICAL CHARACTERISTICS Cnarscterictio Forward VoRage Ir e 3 0 Amp Ta 25 C Reverse Current Rated dc Voltage TA 9 ZE Ta SPC Ratings at 25 C ambient temperature uniess cthenwise species 69 Hz resistive or inductive Inads For capactive nsc derale current by 20 NOTE 1 AMBIENT MOUNTING DATA Data shows for thermal resistance junctioz to embient Raja for the mouztings shown is to be used 2s typical guideline valses for prolimizary suginesting or in case the tie point temperature cannot be measured TYPICAL VALUES FOR Raja IN STILL AIR 58 PN2222A MMBT2222A A R a4 207 223 NPN General Purpose Amplifier This device is for use as a medum power Spe and Swth requiring collector currents up to SC2 mA Sourced from Process 15 Absolute Maximum Ratings 1
21. In these steps all theories and ideas will be put into reality through actual making of a working design prototype Also a thing like programming of the microcontroller PIC and PSOC is done See item d PCB application of the hardware implementation 24 part of this chapter to see the actual PCB implementation of the project 3 Prototype Testing Since the prototype has been created one is uncertain if the output of the prototype is correct or not even if it is already working This can only be done by subjecting the designed system through series of test in determining if the output goes with the theories that have been applied and to what is the user has been expecting This part also identifies the quality of work made and the coverage that it can cover as stated in the scope and delimitations in chapter 1 To see what are the testing methods being used the next chapter discusses them 25 HARDWARE DESIGN a Block Diagram E i EE Sent Sle Cr Controller Box White Box STEPPER MOTOR PSOC DRIVER Buffer STEPPER MOTOR POWER SUPPLY HELICAL SCREW OUTPUT KEYPAD INPUT Figure 3 2 System Block Diagram The Figure 3 2 from the previous page illustrates the block diagram of the system The system is divided into main parts a Controller Box and b White Box The controller box which consists of the keypad microcontroller PIC and PSOC and power supply serves as the main controller circuit as the
22. L 1 min 0 0166667 IL 1min 60 sec sec 1 mL 1 mL 15mL imi mL E 1min 60 sec SEC 1 E LL Im 30 sec 2 0 nL 1 min 0 033333 mL 1min 60 sec sec 38 B Input Output Volume Comparison Test This test aims to compare if the output volume of liquid is the same as the programmed volume of liquid that should come out in one 1 minute Procedure for Input Output Volume Comparison Test 1 The syringe is filled with the sample liquid 2 The desired flow rate is set 3 A stopwatch is set to zero and starts when the plunger touches the end of the aluminum bar 4 The researcher stops the time of the stopwatch until it reaches 1 minute 5 The output is then measured through the use of the pipette Results for Input Output Volume Comparison Test The table below represents the results gathered after conducting the Input Output Volume Comparison Test The results show that the volume being dispensed by the syringe is accurate and is nearly the same as the given volumetric rate 39 Kat e Wu o uw N e 5 Ge W 1 99 volume volume basis average SEM Vo N if Table 4 2 Input Output Volume Comparison Test Results 1 0 08 0 0833333 0 003333 0 48 0 005774 0 9866667 0 003333 1 4766667 0 003333 1 9766667 0 008819 VISCOSITY LEVEL 0 0766667 0 003333 0 9733333 0 008819 1 48 0 005774 0 0933333 0 003333 0 9733333
23. N Print At 1 1 Auto Syringe Print At 2 1 Start DelayMS 400 GoSub KEYPAD If Numeric 11 Then GoSub BEEP GoTo BEGIN GoTo MAIN GoSub UNISET_THREE If POINTS 0 Then If ONES 0 Then GoTo BEGIN End If INTERVAL 0 Here If POINTS 0 Then GoTo Pnext POINTS POINTS 1 INTERVAL INTERVAL 1 GoTo Here Pnext If ONES 0 Then GoTo PROCEED ONES ONES 1 POINTS 10 GoTo Here PROCEED TIMEDELAY 1160 INTERVAL Print At 1 1 Print At 1 1 time dech timedelay delayms 5000 goto main Z1 Low ENBL Low MOTOUT 64 Low MOTHOME Low MOTHOME Zila If SWOUT 0 Then GoTo FINISH High MOTOUT GoSub DELAY2 Low MOTOUT GoSub DELAY2 GoTo Zia FINISH High ENBL Low MOTHOME Low MOTOUT GoSub INITMECH GoTo MAIN UNISET_THREE ONES 0 POINTS 0 Print At 1 1 Auto Syringe Print At 2 1 ENTER 0 0 mL Min THERO Print FE 0F Cursor 2 7 GoSub KEYPAD If Numeric 11 Then GoTo TCANCEL If Numeric 12 Then GoTo UNISET_THREE If Numeric 30 Then GoTo THERO ONES Numeric Print At 2 7 Dec ONES GoSub BEEP THER1 Print FE 0F Cursor 2 9 GoSub KEYPAD If Numeric 11 Then GoTo TCANCEL If Numeric 12 Then GoTo UNISET_THREE If Numeric 30 Then GoTo THER1 POINTS Numeric Print At 2 9 Dec POINTS GoSub BEEP Print FE 0C GoSub BEEP Return TCANCEL Print FE 0C VALID 0 Return DELAY1 DelayMS 1155 Return DELAY2 DelayMS
24. PROTOTYPE DEVELOPMENT Primarily the source of input of the system is the keypad with number 0 9 Its inputs A B C and D which are bit representations of each corresponding number and will proceed to the MCU in ports psp03 psp04 psp05 psp06 accordingly as being shown in figure 3 3 of this chapter This input will serve as a multiplier to the flow rate set at 0 04 cc For example if 5 is being pressed the flow rate will be 5 x 0 04 cc sec and will result to 0 20 cc sec as the flow rate The flow rate will also be interpreted by the microprocessor for it to be 34 understood by the driver which will then late make the stepper motor rotate The microprocessor being used is PIC which uses Assembly Language as its primary programming language The only thing needed to do is to burn or write the program source code created to the microprocessor The source code will be the one processing the input and make necessary computations needed to arrive to the expected output Output is represented and shown in the LCD display for the messages and into the helical screw which is the actual output of the system The LCD display must be connected to the ports in the MCU as being shown in figure 3 3 The helical screw on the other hand must be connected to the driver Moving aside all of the most important components in the circuit are powered by using 5V dc through the power supply Like the MCU and PSOC except the stepper motor driver which requires 1
25. Programmable Syringe Flow Regulator By Margarette G Castisimo Jessica Camille D Docog Louisse Philipp P Leocadio Raymond P Pari ias Vincent S Quitlong Jr A Design Report Submitted to the School of Electrical Engineering Electronics and Communications Engineering and Computer Engineering in Partial Fulfillment of the Requirements for the Degree Bachelor of Science in Computer Engineering Mapua Institute of Technology October 2009 Acknowledgment The members of the group acknowledge the following without whose support would not make this design project possible to Engr Jocelyn F Villaverde our adviser to Engr Noel B Linsangan our Design II Professor and to our families for their understanding when we were away from our homes doing this project To numerous unnamed friends who wished to preserve their anonymities for their support and inspiration And above all to our Almighty God whose infinite wisdom gave us the capability to come up with a design that our engineering colleagues could use To all of you our deepest appreciation and gratitude Margarette G Castisimo Jessica Camille D Docog Louisse Philipp P Leocadio Raymond P Parifias Vincent S Quitlong Jr TABLE OF CONTENTS TITLE PAGE APPROVAL SHEET ACKNOWLEDGEMENT TABLE OF CONTENTS LIST OF TABLES LIST OF FIGURES ABSTRACT Chapter 1 DESIGN BACKGROUND AND INTRODUCTION DESIGN SETTING STATEMENT OF THE PROBLEM OBJECTIVE OF THE DE
26. S Lee LS Ces Les SEsusem a mmea umeummem mem esee p eee Re Des Les LS wer Lee See Dees p sues eee Re Dee Lee LS Ces a Des Les LS me sies smGumsem De Les See Ce Lee a E esie p Eomae s Ree Des Amine LS wee sues sucumsem Des Les LS maur sies a a EH http oneemiLoom 2 56 1N5400 thru 1N5408 185404 and 1854828 are Prefersed Devices Axial Lead Standard Recovery Rectifiers Lead mounted standard recovery rectifiers are designed for use in power supplies and other applications having need of a device with ths following features High Curent to Small Size High Surge Current Capzbility Low Forward Voltage Drop Void Free Economical Plastic Package Avzilable iz Volume Quantities Plastic Meets UL 94V 0 for Flazumab ity Mechanical Charaoterictioc Case Epoxy Molded Weight 1 gram approximately Finish All External Surfaces Corrosion Resistant 2nd Terminal Loads are Readily Soldszable Lead and Mounting Surfaco Temperature for Soldering Purposes 220 C Max for 10 Seconds 1 16 from cass Polarity Cathods Indicated by Polarity Band Masking 1N5400 IN5401 1N 5402 IN5404 IN5406 1N 5407 IN5408 MAXIMUM RATINGS Please See te Tabie on the Following Page ON Semiconductor hitp oncemi oom STANDARD RECOVERY RECTIFIERS 50 1000 VOLTS 3 0 AMPERES mn AMAL LEAD CASE 287 06 STYLE 1 MARKING DIAGR
27. SIGN SIGNIFICANCE OF THE DESIGN CONCEPTUAL FRAMEWORK SCOPE AND DELIMITATION DEFINITION OF TERMS Chapter 2 REVIEW OF RELATED LITERATURE AND RELATED STUDIES Chapter 3 DESIGN METHODOLOGY AND PROCEDURES DESIGN METHODOLOGY DESIGN PROCEDURE HARDWARE DESIGN 1 Block Diagram 2 Schematic Diagram 3 List of Materials SOFTWARE DESIGN PROTOTYPE DEVELOPMENT vi vii viii Chapter 4 TESTING PRESENTATION AND INTERPRETATION OF DATA Chapter 5 CONCLUSION AND RECOMMENDATION CONCLUSION RECOMMENDATION BIBLIOGRAPHY APPENDICES Appendix A List of Materials and Price Listings Appendix B Data Sheets Appendix C Program Listing Appendix D User s Manual Appendix E Device Components 36 44 44 45 46 LIST OF TABLES Table 3 1 List of Materials Table 4 1 Time Volume Accuracy Test Results Table 4 2 Input Output Comparison Test Results Table 4 3 Cost Analysis vi LIST OF FIGURES Figure 1 1 Conceptual Frameworks Figure 3 1 Design Procedures Figure 3 2 System Block Diagram Figure 3 3 Microcontroller Interface Schematic Diagram Figure 3 4 Stepper Motor Driver Schematic Diagram Figure 3 5 Power Supply Circuit Diagram Figure 3 6 System Flow Chart ABSTRACT The Programmable Syringe Flow Regulator is a device that regulates a constant flow rate of the liquid depending on the specified time required for its use This design is originated to develop an innovative way of using syringes common in the
28. TIMEDELAY Return INITMECH If SWHOME 0 Then GoTo Qi Low ENBL Low MOTOUT Low MOTHOME F1 If SWHOME 0 Then GoTo Q1 High MOTHOME DelayUS 400 Low MOTHOME DelayUS 400 GoTo F1 Q1 High ENBL Low MOTHOME Low MOTOUT Return High BUZZ DelayMS 300 Low BUZZ DelayMS 100 Return 65 KEYPAD Numeric 30 PORTD 01110000 DelayMS 1 If PORTD 0 0 Then GoTo one If PORTD 1 0 Then GoTo two If PORTD 2 0 Then GoTo three PORTD 01101000 DelayMS 1 If PORTD 0 0 Then GoTo four If PORTD 1 0 Then GoTo five If PORTD 2 0 Then GoTo six PORTD 01011000 DelayMS 1 If PORTD 0 0 Then GoTo seven If PORTD 1 0 Then GoTo eight If PORTD 2 0 Then GoTo nine PORTD 00111000 DelayMS 1 If PORTD 0 0 Then GoTo aste If PORTD 1 0 Then GoTo zero If PORTD 2 0 Then GoTo pound PORTD 0 Return one If PORTD 0 0 Then GoTo one Numeric 1 Return two If PORTD 1 0 Then GoTo two Numeric 2 Return three If PORTD 2 0 Then GoTo three Numeric 3 Return four If PORTD 0 0 Then GoTo four Numeric 4 Return five If PORTD 1 0 Then GoTo five Numeric 5 Return Six If PORTD 2 0 Then GoTo six Numeric 6 Return seven If PORTD 0 0 Then GoTo seven Numeric 7 Return eight If PORTD 1 0 Then GoTo eight Numeric 8 Return nine If PORTD 2 0 Then GoTo nine Numeric 9 Return aste If PORTD O 0 Then GoTo aste Numeric 11 Return pound If PORTD 2 0 Then GoTo pound Numeric 12 Return zero
29. an be used in chemical laboratories Economically the country will benefit on this study since all materials used are bought locally which are quite cheap Thus duplicating and making this device is easy Users can be assured that the programmable syringe regulator is user friendly 11 CONCEPTUAL FRAMEWORK INPUT PROCESS OUTPUT Liquid Solution Hardware and Programmable Software Syringe Flow Regulator Figure 1 1 Conceptual Framework The figure shows the concept of our design The liquid is placed on the syringe then inserted in the bar The user then enters the desired flow rate and time when the liquid is all dispersed By pressing the start button the inputted values are implemented and the helical screw is started to move that pushes the syringe until it reaches the other end of the aluminum bar and the syringe is empty It informs the user if the process is done by its sound and pushes the syringe to its starting point SCOPE AND DELIMITATIONS The device covers and delimits the following Scope of the Design 1 Flow rate ranges from 0 1 mL min to 9 9 mL min which are the minimum and maximum rates respectively 2 It can output the desired rate of the user in one minute 3 Syringe can be filled with liquid manually 12 4 The device will still function regardless of its position Delimitation of the Design 1 The syringe flow regulator can only hold a 5cc syringe 2 The syringe holder can only c
30. ded the schematic diagram into three separate picture illustrations The first is denoted by figure 3 3 the system main design circuit This part houses the microcontroller P1C16F877A connected to other components like the LCD screen display and keypad The Figure 3 4 below gives the details about the interconnection of pins between the two main components contained in the figure illustration which are the stepper motor circular shape and its driver rectangular shape Then located on the driver s left side are the pins that must be connected to microcontroller through figure 3 3 29 STEPPER MOTOR DRIVER TO MCU INTERFACE CkF Q Stepper Motor 00 1IVAC Figure 3 4 Stepper Motor Driver Schematic Diagram Figure 3 5 illustrates the system s main power supply circuit diagram It converts 220 V AC Voltage to 5 V DC Voltage for it to be usable to the circuit 30 Figure 3 5 Power Supply Circuit Diagram 31 c List of Materials QUANTITY IN PCS MATERIAL smear a fase Monitor e Monitor PIC16F877A 28 40 pin 8 bit CMOS Flash PE 1 cvaec29466 24PXI 24 Pin PSOC CY8C29466 24PXI 24 Pin PSOC Microcontroller pt 9 Keypad E Tm Stepper Motor Driver Stepper Motor 1 Helicalscrew o y O LL PimerGude AnglarSrew Angular Screw du Eh le ES 220V to 12V Step Down Transformer Pp An Capacitor Pp 3300 uF Capacitor 1K ohms Resistor N C
31. e researchers an idea to use limit switch in Programmable Syringe Flow Regulator The limit switches give signal to the stepper motor to reset and stop once the syringe is empty This is applied by placing two separate switches in which the distance is same as the length of the syringe Insulin injected with a mismatch between Insulin syringe and Insulin concentration in vial may have disastrous results and is one of the avoidable causes of hospitalization These mistakes sometimes occur in Hospitals also Patients who are using 100 unit insulin and carry insulin with them may accidentally get 2 5 times high amount of insulin dose due to hospital staff using patients insulin vial of 100 U but syringe is wrongly used as 40 U Neff 2008 STEPPER MOTOR Stepper motors are widely used in various applications They can be found in printers disk drives X Y plotters and many others which are required to move controlled objects to accurate positions within nominated time The single microprocessor controls the stepper motor by sending pulse sequences to the motor windings in response to control commands Commands executed by the code in this application include single step the motor in a 19 clockwise or counterclockwise direct ion i e rotate the rotor through a certain number of degrees run the motor continuously at one of four speeds in a clockwise or counterclockwise direction and stop the motor Kang and Qu 1994 This
32. es within the tube at the same speed as the piston Johnson 1999 Taking into account that the syringe is closely similar to a piston pump it can be said that the statement above is applicable to syringe in which the speed of diffusion or flow rate of the liquid is dependent on the force applied in the plunger to the liquid This nullifies the effect of viscosity of the liquid 21 CHAPTER 3 DESIGN METHODOLOGY AND PROCEDURES This chapter discusses the prototype design methodology used to develop the device and be able to achieve the objectives The step by step procedures done on both hardware and software design are also essential to develop the prototype DESIGN METHODOLOGY The prototype design methodology is patterned according to constructive research Constructive research by definition mainly focuses on producing novel solutions to practically relevant problems It gradually involves evaluation of the problem and a solution that fits the best based on the objectives or criteria being set This kind of research is often used in Computer Science field of study As an identified problem which stated in the first paragraph of this chapter knowing something about the past models and designs of the system is a must Looking at the past researches would give some idea on how to approach the problem and supply necessary information needed to arrive at a given solution or conclusion Therefore conducting research is inevitable
33. esearchers which state observations that can be considered on the design SYRINGE PUMP Syringe Pump is dedicated to intravenous dosage of little volume up to 100 ml medicaments antibiotics anesthetics analgesics chemotherapy reagents with very high accuracy by using syringes Syringe pump allows infusing medicaments at a constant or variable speed Conventional syringe pumps mostly operate in stand alone mode Stated by Markevicius and Navikas 2007 According to the statistics 39 errors are made while administering drugs 10 errors are made in pharmacy and 38 errors are made when infusing drugs 13 due to other reasons Moreover very strict and reliable drug control must be ensured during infusion process because if clinician does not notice that drugs are administered wrongly in 98 cases these drugs will be infused to patient Because of the reports and the statements above in which in this case syringe pumps are critically important element they have additional drug control mechanisms so error probability is reduced Combining human ability which takes decisions with computerized data processing amount of errors can be substantially reduced 18 Syringe pump safety features include an End of Travel Limit Switch that preserves precious contents and protects syringes from damage The syringe bracket prevents leakage and secures the plunger and syringe body to the pump John L 2005 This statement gives th
34. f a flip flop or latch when the output is 0 the action of producing a RESET state Mano and Kime 2003 Speed The particle s displacement divided by the time interval during which that displacement occurs Servay and Jewett Jr 2004 Stepper Motor A brushless synchronous electric motor that can divide a full rotation into a large number of steps The motor s position can be controlled precisely without any feedback mechanism Syringe A device used in medicine to inject fluid into or withdraw fluid from the body Medical syringes consist of a needle attached to a hollow cylinder that is fitted with a sliding plunger The downward 16 movement of the plunger injects fluid upward movement withdraws fluid Dorland and Rhodes 2002 Time The time interval between two events measured by an observer who sees the events occurs at the same point in space Servay and Jewett Jr 2004 Transformer A device that is mostly used to change the voltage in an alternating current AC Bakshi and Godse 2004 Viscosity Describes a fluid s internal resistance to flow and may be thought of as a measure of fluid friction Potter and Wiggert 1990 Volume A measure of the capacity of a three dimensional object Sherman and Russikoff 1996 17 Chapter 2 REVIEW OF RELATED LITERATURE AND RELATED STUDIES This chapter contains previous studies related to the design It also has citations from other r
35. g technology people tend to search if not they develop equipment that will help them do their work conveniently and at the same time to come up with desirable results Syringes that are commonly available in the market are manually operated thus resulting to irregular flow of liquid Another problem is when a researcher conducting experiments involving liquid tests wants to have a device that will enable him to control a constant liquid flow rate thus giving a more acceptable test results OBJECTIVE OF THE DESIGN The main objective of the design is to create a programmable syringe flow regulator that can dispense solutions with varying viscosity Listed below are the specific objectives of the research 1 To show that the volume of different liquid dispensed in a given time is constant and 2 To develop a low cost programmable syringe flow regulator compared to market based products 10 SIGNIFICANCE OF THE STUDY Programmable Syringe Flow Regulator is a prototype that can be used in research related experiments It can be used in experiments needed in biomedical researches in hospitals and even in school laboratories This study will benefit researchers especially those on chemical or drug researches The development of the programmable syringe regulator will help them make their tests and experiments be automated and achieve a more acceptable test results Schools will also benefit on this innovation since it c
36. market to help those people in the medical field as well as researchers that will need this device on their experiments The device is composed of helical screw linear guide aluminum bar and an angle bar that will hold the syringe and a stepper motor Keywords programmable syringe flow rate regulator microcontroller viii Chapter 1 DESIGN BACKGROUND AND INTRODUCTION This chapter discusses a brief introduction about the design the problems and the objectives identified by the researchers the significance of the study to its possible users and the scope and delimitation of the design DESIGN SETTING Syringes commonly available in the market nowadays are those we see in the hospitals that are used as a medical tool Moreover it can be used in researches since it is also a measuring tool used to transfer liquids from one container to another It is manually operated resulting to inconstant force applied on the plunger thus having an irregular flow of liquid This kind of manual operation of syringe when used in research development may lead to inappropriate results which is at far behind of what is being expected The market today offers a wide variety of these types of syringes but the price is way higher than an individual can afford to Also market based products are already made products that cannot be modified or be customized on the way the consumer wants them to be STATEMENT OF THE PROBLEM Because of the fast changin
37. ontain one syringe at a time 3 The device has no scheduler wherein it does not automatically start and stop to run 4 The device has no pause function and will continue its work until the liquid is completely consumed 13 DEFINITION OF TERMS Buffer Creates an output equal to the input It also serves as a signal refresher to strengthen any weak signal output Floyd 2006 Calibrate To check adjust or determine the graduations of a quantitative measuring instrument by comparison with a standard Pyzdek and Keller 2003 Delay Change in an output in response to the change of an input occurs after a specified propagation delay Mano and Kime 2003 Driver A small piece of software that tells the operating system and other software how to communicate with a piece of hardware Mano and Kime 2003 Flow Rate The amount of fluid that flows in a given time Sherman and Russikoff 1996 Input The signal or line going into a circuit a signal that controls the operation of a circuit Floyd 2006 Keypad Used to enter information to the computer Mano and Kime 2003 Liquid The physical state of matter in which particles are held together but are free to move about It has a definite volume but takes 14 the shape of the container in which they are placed Sherman and Russikoff 1996 Microcontroller A specialized microprocessor designed for control functions Floyd
38. plug if not in use 68 DEVICE COMPONENTS MAIN CONTROLLER 5 ack box TOP VIEW SYRINGE BOX brown box Numeric Keypads Syringe Injection Power Button ON OFF Limit Buttons Reset LCD Display Helical Screw Stepper Motor Driver Main Controller black box Stepper Motor 0 Syringe Box brown box 69 APPENDIX E Device Components DEVICE COMPONENTS The device has two main boxes Main Controller 1 Black Box serves as the main controller circuit where inputs are all inputted and entered to the device then process it It houses the following components BilPower Supply NE FEE 71 e Microprocessor Circuit processes all the input and creates a corresponding output e Power Supply the main power source of the device Converts 220V AC to 5V DC power 72 2 White Box shows the output of the device Stepper Motor Driver EE ACK DORNER d WI ga IO aw Components e Stepper Motor Driver black analyzes the output from the MCU and then converts it to action to be applied to stepper motor e Stepper Motor stainless aluminum the one that makes the helical screw to move and revolve e Helical Screw white holds the syringe and makes the back and forth motion of it e Syringe Injection serves as the container that holds the chemical or liquid to be controlled 73
39. program interrupted by a power failure User friendly Simple yet customize according to the end user s preferences Easy to use Less expensive compared to low end products available in the market Duplication is easy because of availability of materials in local market Specifications Dimensions 12 H x3 5 W x 12 D Imprecision 0 02 full stroke Wetted Parts Borosilicate glass and Teflon Firmware RS232 communications Automatic backlash compensation Absolute valve positioning Space Saving Chassis Foot print size of only 5 3 4 x 8 3 4 Easy to use keypad interface Infusion rates from 0 73 uL hr 1 cc syringe to 2100 ml hr 60 cc syringe Holds 1 Syringe up to 60 cc Hold 1 syringe of 5 cc Infusion rate from 0 1 ml min up to 9 9 ml min Programming Language Assembly Language 1 Screw the syringe in the distribution 1 Set syringe diameter 1 Fill the syringe with liquid solution Set valve 2 Set dispense rate 2 Enter the flow rate in ml min seh 2 Press the power button then press 3 Set dispense volume 3 Press to start operation Initialize 4 Press Start 3 Enter the correct syringe size Programmable Yes Yes Yes Price in php USD 2640 Php 126 720 USD 830 Php 39 840 Php 19 705 00 Source http www jkem com psp html http www syringepump com detailedfeatures htm Table 4 3 Cost Analysis Table 4 3 shows the comparison of the present
40. should help to make the device more convenient and useful d A timer can be installed to measure the lapsed time when the liquid starts to flow 2 Because of the bulkiness of the device it should be smaller to lessen the space occupied in the laboratory and lighter to be portable in carrying 3 The device can be more useful if it can hold different sizes of syringe 4 A scheduler can be implemented to perform the task in a certain period of time 5 Auto filling of liquid in the syringe should be considered to avoid refilling the syringe over and over again 45 BIBLIOGRAPHY Alexander C K and M N Sadiku 2004 Fundamentals of Electric Circuits 2 edition McGraw Hill Companies Inc New York Beer F and D Mazurek 2008 Mechanics of Materials 5 Edition McGraw Hill Companies Inc New York Floyd T L 2006 Electronics fundamentals circuits devices and applications 7 edition Prentice Hall U S A John L 2005 Zaboratory Equipments Nursing and Health Magazines Liptak B G Instrument Engineers Handbook 4 Edition Volume II Process Control and Optimization Markevicius V and D Navikas 2007 Information Technology Interfaces 29th International Conference 257 262 Mano M M and C R Kime 2003 Fundamentals of Logic and Computer Design 3 Edition Prentice Hall U S A Neff T A 2008 Matching Insulin Syringe to Insulin strength is crucial Nursing and Health Magazines
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