基于加速度的车祸报警系统的设计与实现

Design and implementation of car alarm based on acceleration sensor

为使汽车发生车祸时可在最短的时间内得到援救,以达到减少车祸伤亡的目的,设计了一种基于加速度的车祸报警系统,主要包括车载终端和上位机。车载终端以AVR单片机作为核心,它具有两个串行通讯口,一个接GPS模块,另一个接GSM模块。一旦判断发生车祸,车载终端会立即生成短信,通过GSM将信息发送至已设置的号码,同时上位机会很快收到短信而获得车祸的时间、地点、速度、加速度,接收号码也可以设置多个。车载终端同时也支持手动报警和呼叫功能,即发生车祸后现场人员可通过车载终端与监控中心联系,让监控中心获得更为详细的车祸情报。

In order to obtain rescue in the shortest possible time and achieve the purpose of reducing casualties in a traffic accident, a kind of automatical traffic accident alarm system based on the acceleration is designed. It main includes vehicle terminal system and upper computer （PC）. The core of the vehicle terminal system is AVR microcontroller, which has two serial communication port, one is connected to GPS module, the other is connected to GSM module. Once accident happened, terminal system would immediately generate text messages and send messages to assigned number through GSM, while upper computer instantly receives SMS and obtains the time, place and the velocity, acceleration of accident at the same time, the multiple number can be installed. The car terminal also support manual alarm and call function, namely on-site personnel can contact with monitoring center by the car terminal, let the monitoring center get more detailed information of traffic accident after the accident.