多功能汽车GPRS防盗报警系统的设计

Design of Multi-Function Automobile GPRS Theft-Against and Alarm System

利用现有移动网络的GPRS功能,设计了一种新型汽车防盗报警系统.该系统利用汽车现有的报警系统采集报警信号,并通过CAN总线进行信息传输,有效地利用了汽车现有资源,并降低了系统成本,通过移动无线网络将汽车图像信息以彩信的方式发送至用户手机,有效地提高了网络覆盖范围、提高了系统的可靠性并降低了误报率.在汽车行驶过程中,系统通过CMOS摄像头实时拍摄汽车两侧及车后的景象并显示在LCD屏幕上,从而起到后视系统的作用.该系统主要有5部分组成:中央控制模块、CMOS摄像模块、LCD显示模块、GPRS模块以及CAN总线模块.本文主要介绍该系统的硬件组成及基于嵌入式Linux操作系统的系统软件设计.

A new kind of automobile theft-against and alarm system by using mobile network GPRS is introduced. The system employs the existing alarm system to get alarm information by communicating with CAN bus, which not only makes use of resources effectively but also reduces the system cost. And the system sends automobile image to the user＇s cell phone through the mobile wireless network, which enlarges the network covered area and improves the reliability. Besides, the system can also act as a rearview system by using CMOS camera. The system consists of five parts. S3C2440A central-controller module, CMOS camera module, LCD display module, GPRS module and CAN bus module. This paper mainly introduces the system hardware configuration and software design based on embedded Linux.