GPS与GPRS在车载无线监测系统应用研究

摘要

系统主要实现车载系统的实时监测功能。采用STC12I正5A60S2单片机作为控制核心,通过CAN总线与其它现场设备通信，通过新月HC12 GPS模块采集地理位置等信息，以BENQ M23建立的GPRS网络作为无线传输媒介，实现实时的车载监测系统。该系统通过CAN总线接收其它模块传输过来现场数据,并与GPS定位信息结合在一起形成一帧数据，通过GPRS无线网络将数据上传至监控中心。与其他的无线监控系统相比,该系统利用移动通信卫星和基站的大覆盖面积的优势，功能更强,能够进行语音、文字、图像等信息交互，而且节省了建立数据链所需的昂贵支出,应用前景广泛。%The system is mainly for the real-time monitoring vehicle. It is composed of STC12LE5A60S2 single-chip microcomputer as the control core, XINYUE HC12A as the GPS data acquisition module, and BENQ M23 as the intermediate of wireless transmission on GPRS network. With GPS positioning information, the system transmits the data acquired from other modules through the CAN bus to the PC. And other wireless monitoring system, this system uses satellite and mobile communications base stations the advantage of the large coverage area, more powerful, capable of voice, text, images, information exchange, but also saves expensive to establish the necessary expenditure data link, broad application prospects.