【摘要】 结合高速公路应急电话系统的开发和研究，介绍了一种适用于较少数据量和较远传输距离(10公里以上)的总线式远程数据传输系统的硬件电路及其软件实现。此系统不仅适用于高速公路应急电话系统，也可用于各种远距离测量或监控系统。更多还原

【Abstract】 Based on the research of highroad emergency system ,the paper introduces a bus telecommunication system(circuit and software) ,which can be used to transport some data through a long distance(more than 10 kilometers).The system not only can be used in highroad emergency system ,also can be used in tele-measure and tele-control system.更多还原