Dear friends, I am about to graduate and need a graduation project. This topic is the software design of fire alarm system. I hope someone can help me design it, thank you.

Research on Automobile Anti-theft System Based on GSM Network

abstract

Since the reform and opening up, China's economy has advanced by leaps and bounds, and China people's living standards have entered a well-off society and become richer. In this case, more and more people choose to buy cars to improve their quality of life. With the increase in the number of family cars, car theft is becoming more and more serious. How to avoid car theft is in front of us.

On the basis of studying the existing automobile anti-theft system, combined with the existing science and technology, this design takes single chip microcomputer as the control unit and GSM network as the medium to transmit information to the owner. Because the GSM network is very developed, covering a wide range and available 24 hours, the anti-theft system has the advantages of all-weather, strong real-time and simple implementation. The system is divided into two parts: vehicle equipment and user terminal. As long as the mobile phone has the function of making and receiving calls and short messages, it can be used as a user terminal. The vehicle terminal includes a CPU control module, a power module, a mobile phone module and a detection control module. Single chip microcomputer controls the mobile phone module in real time, which can be processed in real time according to the content of short messages, and users can use short messages to send commands to inquire or control the car status.

The system takes ST89C52 single chip microcomputer and Siemens TC35i GSM module as the core, and completes the design of peripheral circuits. Use KEIL C software to complete the communication program between SCM and GSM module and the command processing program of SCM. Finally, after debugging the software and hardware, the system runs normally, is safe and reliable, and meets the design requirements.

Keywords: car anti-theft, short message, GSM, TC35i

catalogue

Abstract Ⅰ

Abstract Ⅱ

Directory 3

1 Introduction 1

1.2 Present situation and development direction of automobile anti-theft system 1

1.3 content and significance of the research project 3

1.4 paper structure 4

2 Introduction of GSM Network and Short Message Service 5

2. Introduction of1GSM system 5

2.2 basic services of GSM system 6

2.3 Short Message Service in GSM System 6

2.4 SMS and SIM card 7

2.5 The realization of automobile anti-theft system based on SMS communication 8

3 system hardware design 10

3. 1 MCU module design 10

3.2 Minimum System Design of Single Chip Microcomputer 1 1

3.3 SIM card circuit design 12

3.4 wireless communication module 13

3.5 power control circuit 14

3.6 Overview of this chapter 15

4 system software design 16

4. Introduction to1at instruction 16

4.2 General AT instruction and return form 16

4.3 SMS sending mode 20

4.4 MCU Programming 2 1

4.4. 1 serial port handler flow chart 22

4.4.2 Single Chip Microcomputer Short Message Sending Program Flow Chart 22

4.4.3 Single Chip Microcomputer Receiving Data Program Flow Chart 23

4.4.4 MCU reading short message program 24

4.5 Overview of this chapter 26

5 system debugging 27

5. 1 debugging method 27

5.2 Introduction to Keil 28

5.2. 1 system overview

5.2.2.Keil C5 1 Overall Structure of Single Chip Microcomputer Software Development System 28

5.3 Debugging Step 29

5.4 Debugging Results 30

6 conclusion 3 1

Acknowledgement 33

Reference 34

Appendix: Source Program 36