DEVELOP A LINEAR MEASUREMENT SENSOR SYSTEM ANG SEI QI

Transcription

1 DEVELOP A LINEAR MEASUREMENT SENSOR SYSTEM ANG SEI QI This Report Is Submitted In Partial Fulfillment Of The Requirement For The Bachelor Degree Of Electronic Engineering (Industrial Electronic) Faculty of Electronic and Computer Engineering University Teknikal Malaysia Melaka April 2010

2 ii UNIVERSTI TEKNIKAL MALAYSIA MELAKA FAKULTI KEJURUTERAAN ELEKTRONIK DAN KEJURUTERAAN KOMPUTER BORANG PENGESAHAN STATUS LAPORAN PROJEK SARJANA MUDA II Tajuk Projek : Develop a Linear Measurement Sensor System Sesi Pengajian : 2009/2010 Saya ANG SEI QI mengaku membenarkan Laporan Projek Sarjana Muda ini disimpan di Perpustakaan dengan syarat-syarat kegunaan seperti berikut: 1. Laporan adalah hakmilik Universiti Teknikal Malaysia Melaka. 2. Perpustakaan dibenarkan membuat salinan untuk tujuan pengajian sahaja. 3. Perpustakaan dibenarkan membuat salinan laporan ini sebagai bahan pertukaran antara institusi pengajian tinggi. 4. Sila tandakan ( ) : SULIT* TERHAD* (Mengandungi maklumat yang berdarjah keselamatan atau kepentingan Malaysia seperti yang termaktub di dalam AKTA RAHSIA RASMI 1972) (Mengandungi maklumat terhad yang telah ditentukan oleh organisasi/badan di mana penyelidikan dijalankan) TIDAK TERHAD Disahkan oleh: (TANDATANGAN PENULIS) (COP DAN TANDATANGAN PENYELIA) Alamat Tetap: 5-05 Lorong Bulan 1, Pangsapuri Seri Orkid, Butterworth, P.Pinang. Tarikh: Tarikh:

3 iii I hereby declare that this report is the result of my own work except for quotes as cited in the references. Signature Author Date :. :. :.

4 iv I hereby declare that I have read this report and in my opinion this report is sufficient in terms of the scope and quality for the award of bachelor of Electronic Engineering (Industrial Electronics) With Honours. Signature : Supervisor s Name : MR. FARID ARAFAT BIN AZIDIN Date :

5 Dedicated to my beloved family especially my father and mother, lecturer, and also to all my friends v

6 vi ACKNOWLEDGEMENT First and foremost, I would like to praise God for His blessing. He gave me physical and mental strength to carry on my final year project up to this status. I would like to express gratitude and thanks to my supervisor, Mr. Farid Arafat Bin Azidin for his support and unfailing patience throughout the duration of the project. His encouragement and guidance are truly appreciated. I have learnt a lot under his guidance, be it practically or theoretically. Other than that, I am grateful to my all friends who help me and giving me opinion along implementation of this project. I would like to thanks my parent on their moral support as I can count on them whenever I am upset or down. Finally, I would like to offer thanks and deepest gratitude from the bottom of my heart for all the support, encouragement and inspirations I obtained throughout the duration of this project. The help rendered to me priceless, be it from the smallest of its kind to the largest.

7 vii ABSTRACT Linear measurement sensor system is a created to measure the linear distance, by using the reflective infrared system which controlled by PIC16F628A, and display result on the screen of the LCD. A combination of reflective IR sensor, 2X8 LCD and PIC controller, the reflective infrared sensor will detect black and white color in the roller, and give small differences voltage signal, then the small voltage signal will be converted by into linear measurement in mm. the output signal will be displayed in LCD 2x8. The PIC will be programmed by using PIC complier software. The 2x8 LCD display is used and this project will become small, easily to carry. The objective of this system is to investigate new measurement tools of linear distance that can avoid error occur when taking the measurement reading, this linear measurement sensor system is introduced to provide a more accurate linear measured reading. In addition, to shorten time taking of the reading after a measurement, by just looking at the 2x8 LCD display. To achieve the objectives, the Protues software is used in the schematic circuit design and simulation, and the MicroCode Studio software is used in the PicBasic programming development. The feature of this project is specified by stated the scope of the project. The PIC programming will be developed for converting the small voltage signal to linear measurement in mm. The measurement range will be around mm and show on the LCD display. Furthermore, the precision of the project can also be stated in the designing of the black and white roller. This system will be extremely handy and convenience to operate at different environment condition with the special casing design to protect the circuit.

8 viii ABSTRAK Sistem sensor pengukuran lurus yang dibuat untuk mengukur jarak lurus, dengan menggunakan sistem inframerah reflektif yang dikendalikan oleh PIC16F628A, dan hasilnya dipaparkan pada skrin LCD. Kombinasi sensor IR reflektif, 2X8 LCD dan controller PIC, sensor inframerah reflektif akan mengesan warna hitam dan putih di roller, dan memberikan perbezaan kecil isyarat voltan, maka tegangan isyarat kecil akan dikonversi kedalam pengukuran lurus dalam mm. isyarat keluaran akan dipaparkan di LCD 2X8. PIC akan diprogram dengan menggunakan software compiler PIC. Layar LCD 2X8 digunakan dan projek ini akan menjadi kecil, mudah untuk dibawa. Tujuan dari sistem ini adalah untuk mengetahui alat ukur baru jarak lurus yang boleh mengelakkan kesalahan terjadi saat memuat pembacaan pengukuran, sistem pengukuran garis lurus sensor diperkenalkan untuk memberikan yang lebih tepat membaca lurus diukur. Selain itu, untuk memendekkan masa turun membaca selepas pengukuran, dengan hanya melihat layar LCD 2X8. Untuk mencapai tujuan, Protues perisian yang digunakan dalam desain skema litar dan simulasi, dan microcode Studio adalah software yang digunakan dalam pembangunan program PicBasic. Ciri-ciri dari projek ini adalah ditentukan oleh lingkup projek lain. Pemprograman PIC akan dikembangkan untuk menukar isyarat voltan kecil untuk pengukuran lurus dalam mm. Rentang pengukuran akan sekitar mm dan menunjukkan pada paparan LCD. Selain itu, ketepatan projek juga boleh dinyatakan dalam perancangan roda hitam dan putih. Sistem ini akan sangat berguna dan kemudahan untuk beroperasi pada keadaan persekitaran yang berbeza dengan kotak rekaan khusus untuk melindungi litar.

9 ix TABLE OF CONTENTS CHAPTER TITLE PAGE PROJECT TITLE BORANG PENGESAHAN STATUS LAPORAN STUDENT DECLARATION SUPERVISOR DECLARATION DEDICATION ACKNOWLEGEMENT ABSTRACT ABSTRAK TABLE OF CONTENTS LIST OF TABLES LIST OF FIGURES LIST OF ABBREVIATION LIST OF APPENDIX i ii iii iv v vi vii viii ix xiii xiv xvi xviii I INTRODUCTION

10 x 1.1 Introduction Objectives Problem Statement Scopes of Project Briefly Explanation of Methodology Report Structure 7 II LITERATURE REVIEW 2.1 Introduction Peripherals Interface Controller (PIC) Introduction of PIC Comparison PIC16F628A to Other PIC Benefit of 16F628A Infrared Sensor Introduction of Infrared Sensor Reflective IR sensor Advantages of Reflective Infrared Sensor Liquid Crystal Display (LCD) Introduction Three Control Lines of LCD Liquid Crystal Display Pin Description PICBASIC PRO 20

11 xi III PROJECT METHODOLOGY 3.1 Introduction Flow Chart PicBasic Programming Flow Chart System Block Diagram Circuit Design Voltage Regulator Circuit Main Functional Circuit List of Component Circuit Simulation Circuit Construct Using Protues ISIS Testing the Programming in ISIS Test Board Construction Soldering Skills Desoldering Skills PIC Programming Steps of LCD Programming PIC Pro Basic Programming Compiling Circuit Testing PCB (Printed Circuit Board) Design PCB Layout Design Casing Design 48

12 xii IV RESULT AND DISCUSSION 4.1 Introduction Software Development Analysis Main Functional Circuit Simulation PCB Layout Design PIC Programming Hardware Development Analysis Test Board PCB (Printed Circuit Board) Final Product with Casing Measurement Result Analysis Linear Measurement Curve Line Measurement Circle Measurement 62 V CONCLUSION AND SUGGESTION 5.1 Conclusion Suggestion 64 REFERENCES 65

13 xiii LIST OF TABLES NO TITLE PAGE Table 2.1: Comparison between PIC16F628A and PIC16F84 11 Table 2.2: Comparison between PIC16F628A and PIC 16F Table 2.3: LCD Pin Description 20 Table 3.1: PIC 16F628A pin connection 29 Table 3.2: 2X8 LCD Pin Connection 30 Table 3.3: Component List of Voltage Regulator Circuit 31 Table 3.4: Components List of Main Functional Circuit 31 Table 3.5: Soldering Reminder and Warning 40 Table 3.6: Command Operation 43 Table 4.1: Result Analysis of Linear Measurement 60 Table 4.2: Result Analysis of Curve Line Measurement 61 Table 4.3: Result Analysis of Circle Measurement 62

14 xiv LIST OF FIGURES NO TITLE PAGE Figure 1.1: Carpenter s Folding Rule and Metal Tape Measure 2 Figure 1.2: System Block Diagram 3 Figure 1.3: Flow Chart 6 Figure 2.1: Size Comparison 10 Figure 2.2: The Operation Diagram of Reflective Infrared Sensor 15 Figure 2.3: Construction of the LCD 17 Figure 2.4: Character 2X8 LCD 19 Figure 3.1: Flow Chart 23 Figure 3.2: PicBasic Programming Flow Chart 26 Figure 3.3: System Block Diagram 27 Figure 3.4: Voltage Regulator Circuit 28 Figure 3.5: Protues ISIS user s interface 32 Figure 3.6: Step of Component selection 33 Figure 3.7: Pick Devices Window 33 Figure 3.8: Placing Component on the schematic sheet 34 Figure 3.9: Component Rotation 34 Figure 3.10: Wiring 35 Figure 3.11: Power Supply and Ground 35 Figure 3.12: Edit Terminal Label 36 Figure 3.13: Completed Schematic Circuit 36

15 xv Figure 3.14: Circuit Execution/Simulation 37 Figure 3.15: Simulation Error Log 37 Figure 3.16: Constructed Circuit in ISIS Protues 38 Figure 3.17: Programming Compiling 44 Figure 3.18: Program Loader 45 Figure 3.19: MicroCode Loader 45 Figure 3.20: ARES Professional Window 47 Figure 3.21: Route size selection and Miter Selection 48 Figure 3.22: Side View & Front View 49 Figure 4.1: System Description Shown 51 Figure 4.2: LCD Display 51 Figure 4.3: Clock Pulse Supply 52 Figure 4.4: Memory Button 52 Figure 4.5: PCB Layout Bottom View and Top View 53 Figure 4.6: Testing Board 57 Figure 4.7: Finished PCB: Bottom View and Top View (Components Align) 57 Figure 4.8: Top View of Final product 59 Figure 4.9: Bottom View 59 Figure 4.10: Side View 60

16 xvi LIST OF ABBREVIATION PIC - Programmable Interface Controller LCD - Liquid Crystal Display IEEE - Institute of Electrical and Electronics Engineers PSM - Projek Sarjana Muda CPU - Central Processing Unit ROM - Read-Only Memory I/O - Input/Output RISC - Reduced Instruction Set Computer EPROM - Erasable Programmable Read-Only Memory UART - Universal Asynchronous Receiver/Transmitter PWM - Pulse Width Modulation RAM - Random-Access-Memory EEPROM - Electrically Erasable Programmable Read Only Memory IDCC - Integrated Data Communications Controller DVI - Digital Visual Interface VGA - Video Graphics Array

17 xvii MCU - Microcontroller Unit EN - Encoder PCB - Printed Circuit Board

18 xviii LIST OF APPENDIX NO TITLE PAGE A Data Sheet of PIC 16F628A 67 B Data Sheet of V Voltage Regulator 78 C Data Sheet of 2X8 LCD Monitor 87 D Data Sheet of QRD

19 CHAPTER I INTRODUCTION This chapter will give reader a basic introduction to how the idea of this project generated. The chapter contains introduction, objective of the project, problem statement, scopes of project, brief methodology, and report structure. 1.1 Introduction Linear measure is used to express distance and to indicate the differences in their elevations. The standard units of linear measure are the foot and the meter. In surveying operations, both of these standard units are frequently divided into tenths, hundredths, and thousandths for measurements. For longer distances are involved; the foot is expanded into a statute or to a nautical mile and the meter into a kilometer. But for the short distance or short range measurement, normally will use centimeter (cm) as a unit. 1 meter is equal to 100 centimeter. Measuring instruments similar in function to rulers are made portable by folding (carpenter's folding rule) or retracting into a coil (metal tape measure) when not in use. When extended for use they are straight, like a ruler. Although both of these

20 2 measurement tools, can be folder or retracts, nevertheless, the long scale of these measurement tools have bring a lot of inconveniences for the user. Figure 1.1: carpenter s folding rule and metal tape measure Digital measuring tools seem to be a great idea and new trend in the measurement world. There is no tape or scale to deal with. But with a digital measuring tape it have to holding both ends of the tape measure and the tape measure bending and giving an inaccurate reading. Digital measuring tools accuracy with an old fashion measuring tools there were so many ways to make the reading inaccurate. With the combination of electronic technology, the reading can also be memorized by using the digital measurement tools, to avoid the user in forgetting the reading. The character LCD also is a trend in the developing measurement tools. This project title is Develop a linear measurement sensor system. A measurement tool will be developed to measure linear distance. A combination of reflective infrared sensor and PIC controller, the reflective infrared sensor will detect black and white color in the roller, and give small differences voltage signal, through the programmed PIC, then the small voltage signal will be converted by into linear measurement in unit cm. The output reading will send from the PIC to display on the 2X8 character LCD. The PIC will be programmed by using PIC complier software Microcode Studio in the form of PIC Basic language. The 2x8 LCD display is used and this project, so that this project produces in small, easily to carry. The circuit board cover with a special designed casing which can move smoothly with the roller stated above and suitable to be use in different condition.

21 3 Figure 1.2: System Block Diagram 1.2 Objectives The main purpose of this project is to develop a linear measurement sensor system with three main electronic components, which is reflective infrared sensor, PIC and character LCD display. Therefore the objectives below should be achieved To avoid error occur when taking the measurement reading, this linear measurement sensor system is introduced to provide a more accurate linear measured reading To apply electronic technology and to investigate new measurement tools of linear distance To shorten time taking of the reading after a measurement, by just looking at the 2x8 LCD display To explore the programming of PIC controller by using PIC Pro Basic for distance measurement application To explore the application of infrared sensor in industry and to design a prototype using infrared sensor.

22 4 1.3 Problem Statement There will be some error occur when taking the reading from measurement tools, such as parallax error For someone who is not familiar to the measurement tools, they may take time to take the reading from the scale of the measurement tools Old fashion measurement device cannot memorize the reading Some measurement tools may not suitable to measure curve line The measurement tools may be suitable to use on any kind of surfaces Others problem may be faced in this project are to write a programming to generate the output reading according the range had been stated. 1.4 Scopes of Project Write the PIC programming for converting the small voltage signal to linear measurement in cm. The measurement range will be around mm and show on the LCD display Design the sensor system circuit board with a 5V voltage regulator. i. PIC controller (PIC 16F628A) with input voltage 5V, ii. Reflective infrared sensor with input current 100µA 10mA. iii. 2x8 LCD display with input voltage 5V. iv. Push button as a memory button. v. Other components such as, resistors, power switch, and etc The rubber roller will be used and the black-white will be colored inside the roller for determining the precision of the measurement Design a casing that can use to protect the circuit board, and can be use under different condition.

23 5 1.5 Briefly Explanation of Methodology First of all, this project is beginning by having a discussion with supervisor about the general ideas and concepts that would be used in this project. Next, for literature review stage, the background of this project is studied and research is done by referring various sources like: reference book, I.E.E.E journals, website of Labcenter (Proteus Software Company), and the datasheet. For the following stage, all the information related to components, PIC, infrared sensor, character LCD display information is searching, and the most suitable would be selected for used in this project. On next stage, the PIC Basic programming is studied, and the schematic circuit is designed and simulated in the Proteus software before construct on the stripboard. If the functional testing of the circuit on the stripboard is successfully, then will proceed to the PCB layout design, to produce an as small as possible circuit. Lastly, the casing design is start; the design must be suitable for protecting the circuit board and fit all components, to make the project function at any condition. If the outputs of this system fulfill the project requirements and specification, so this project is considered success. If the output of this system did not fulfill the desired output, so the troubleshooting would be carrying out until it reaches the project requirements.

24 6 Start Meeting & discuss with Project Supervisor (PSM Briefing and Literature Review) Study for Current Project Analyze and understand project Design the circuit and simulate Development for Hardware Interfacing (Design circuit board) PIC Programming study and create Soldering circuit Troubleshooting Circuit Testing No Yes Design a user friendly Casing Finalize End Figure 1.3: Flow Chart