基于GPS与GSM的交通事故自动呼救系统的设计

结合GPS的定位功能和GSM的远程无线通讯功能,提出一种以提高交通安全、减少人员伤亡为目的的车辆交通事故自动呼救系统的构建方案,该系统会伴随安全气囊的启动而启动,也可手动启动。车载模块将安全气囊点火信号送入微处理器,通过串行接口驱动无线数据传输模块,经GSM网络将GPS的定位信息发送到监控中心,并可建立车载模块与监控中心之间的语音通讯,给出车载模块硬件电路实现、软件设计以及控制中心的设计方案,并对系统的关键技术进行了说明。

Design of Automobile Emergency Calling System Based on GPS and GSM

Based on the positioning function of GPS(global positioning system) and the long-distance wireless communicative function of GSM(global system for mobile communications),an automobile emergency calling system is put forward for the purpose of enhancing the security of modern traffic and decreasing the traffic accidents.This system can start with the starting of airbag automatically or by hand.The vehicle terminal firstly sends the ignition signal of the airbag into the microprocessor,and then the wireless data transfer modem,which is driven by serial interface,transmits the data acquired from GPS to the monitoring center through GSM network,and in this way the voice communication between the vehicle terminal and the monitoring center is realized as well.The implementation scheme of hardware circuit for vehicle terminal,the design of software and the design of control center are explored.The key techniques for the system are also demonstrated.