【摘要】 介绍一种基于MSM7512B的远距离火车站信息数据采集系统,该系统的车站现场数据采集系统采用RS485总线技术和车站间数据传输采用Modem技术,实现了在普通电话线上进行20km的远距离数据传输,数据采集采用可调域值比较法和系统软件具有自动判错功能,提高了系统的抗干扰能力。更多还原

【Abstract】 The paper introduces a kind of railway station remote data acquistion system based on msm7512b, data acquisition adopts RS485 bus technology in local station and data transmission adopts Modem technology between stations, which achieve 20km remote data transmission in common line, besides the means that comparing voltage can be changed is used in data acquisition and false code can be identified in system software, improving stability of the system.更多还原