摘 要
随着经济的发展，汽车市场不断壮大，私家车的持有量也越来越多，但如何有效地做好汽车防盗是一个急需解决的问题。在国内，由于价格上和技术上的原因，普通的电子式汽车防盗器还是占据主流地位，这类防盗器产品大多数都存在着防盗功能单一、可靠性低、缺乏监控功能等缺陷，因此研究设计一种新型有效的汽车防盗系统是十分必要的大学论文网www.wnwu.com。
论文结合当前汽车防盗技术和GSM网络的优势，使用ATMEL公司的AT89S52单片机和SIEMENS公司的TC35无线通信模块设计了一种基于GSM网络的具有短消息收发功能的汽车防盗系统。
论文首先阐述了单片机和GSM的基本原理，介绍了系统的总体设计，给出了系统的整体框图，描述了系统中各单元模块组成。然后进行了ECU系统中的上电复位电路、晶振电路和串口电平转换电路的设计；接着重点研究了TC35的基本功能，完成了TC35模块的外围电路设计；在设计系统的稳压电源电路时，使用了两个大容量电解电容器配合高性能LM2576稳压芯片以满足TC35和整个系统的供电需求，使系统能够稳定工作；在单片机和汽车电路系统之间设计了一个由ULN2003组成的驱动电路，让单片机可以驱动继电器来控制汽车中的电路、油路、中控门锁、警示灯和喇叭等，以实现防盗报警功能；继而将各个模块的电路进行集成，完成了系统总电路的设计。最后，对设计进行了全面的总结。
关键词：汽车防盗，GSM系统，短消息，TC35
ABSTRACT
Along with the economical development, the auto market expands unceasingly, the private car has the quantity to be also getting more and more, but how completes the automobile security is an urgently needed solution question effectively. In home, because in the price and the technical reason, the ordinary electronic formula automobile security occupies the mainstream status, this kind of security product majority has the security function to be unitary, the reliability low, lacks flaws and so on monitoring function, therefore studies designs one kind of new effective automobile burglary protection system is very essential.
The paper union current automobile security technology and the GSM network's advantage, used ATMEL Corporation's AT89S52 single chip microcomputer and SIEMENS Corporation's TC35 wireless communication module designs one kind to have the short messages receiving and dispatching function automobile burglary protection system based on the GSM network大学论文网www.wnwu.com.
First of all, the paper elaborated the single chip microcomputer and the GSM basic principle, introduced system's system design, has given system's overall diagram, described in the system various units module composition. Then has carried on the ECU system's on electricity reset circuit, the crystal oscillator electric circuit and the serial port level switch electric circuit's design; Then with emphasis has studied the TC35 basic function, has completed the TC35 module peripheral circuit design; When design system's voltage-stabilized source electric circuit, used two large capacity electrolytic capacitor coordination high performance LM2576 constant voltage chip to satisfy TC35 and overall system's power supply demand, enabled the system the steady work; Has designed one in the single chip microcomputer and between the automobile circuitry the driving circuit which is composed of ULN2003, enables the single chip microcomputer to be possible to actuate the relay to control in automobile's electric circuit, the oil duct, to control the door lock, the caution light and the loudspeaker and so on, realizes the security warning function; Subsequently carries on each module's electric circuit the integration, has completed the system total electric circuit's design. Finally, to the project has carried on the comprehensive summary.
Keywords: Car alarm, GSM System, SMS, TC35
目 录
第1章 绪论 1
1.1 引言 1
1.2 国内外汽车防盗技术的发展 2
1.3 现有的遥控汽车防盗系统 3
1.4 汽车防盗系统的设计意义 4
1.5 设计的主要工作 6
第2章 相关技术介绍 7
2.1 单片机技术大学论文网www.wnwu.com 7
2.1.1 什么是单片机 7
2.1.2 单片机的特点 8
2.1.3 单片机的应用 8
2.2 GSM系统 8
2.2.1 GSM概述 9
2.2.2 GSM系统组成 10
2.2.3 GSM系统的信道 11
2.2.4 GSM系统提供的业务 13
2.2.5 SMS短消息业务 13
第3章 系统的总体设计 15
3.1 系统的构成 15
3.2 元器件选材 16
3.2.1 传感器 16
3.2.2 中央处理模块 17
3.2.3 无线通信模块 18
3.2.4 驱动模块 19
3.2.5 串口模块 19
3.2.6 电源模块 21
3.2.7 SIM卡 21
第4章 系统的具体实现 23
4.1 ECU系统设计 23
4.2 电源电路设计 25
4.3 串行口RS-232与TTL电平转换电路设计 27
4.4 驱动电路设计 28
4.5 短消息检测与控制电路设计 30
4.6 软件设计 33
结 论大学论文网www.wnwu.com 36
致 谢 37
参考文献 38
附 录 39
