应用STM32的车载呼救终端设计

STM32-Applied Vehicle Call Terminal Design

以STM32嵌入式微处理器为核心,利用射频技术、GPS定位技术、GPRS通信技术、图像采集技术等设计了一种车载呼救终端,分为事故检测及呼救信息发送两个模块。两个模块之间利用射频实现信息传输。事故检测模块主要负责车辆信息的采集及预处理,判断事故是否发生;呼救信息发送模块负责整合相关信息,如时间、位置、碰撞速度、车内图像、车辆信息等,并将信息发送至呼救中心。呼救中心根据接收到的信息,采取合适的救援方案实施救助。实验结果表明:车载呼救终端能够准确、快速地采集车辆行使信息,实现数据的实时处理及呼救信息的发送。

A vehicle calling system terminal was designed,taking STM32 flushbonading microprocessor as the core,based on RF technology,GPS positioning technology,GPRS communications technology,camera technology,and system was divided into two modules： accident detection and call information transmission. Transmission of information between the two modules was realized through the RF. The accident detection module was mainly responsible for collecting and preprocessing vehicle information to determine whether the accident occurred. While the call information transmission module was responsible for the integration of related information,such as time,location,collision speed,the car image,vehicle information,and sending the information to the center for help. The call centertook appropriate rescue plan bailout based on the received information. The results show that it can collect information of vehicle accurately and rapidly and realize the real time processing of data and the sending emergency capacity message.