一种基于A/D转换的开关量信号远程检测方法  

A Switching Signal Remote Detection Method Based on A/D Transformation

作　　者：龙建坡 王舒卿 吕常智 LONG Jianpo;WANG Shuqing;LV Changzhi(Henan Thought Rail Transit Technology Research Institute Co.,Ltd.,Zhengzhou,Henan 450000,China;College of ElectricalEngineering and Automation,Shandong University of Science and Technology,Qingdao,Shandong 266590,China)

机构地区：[1]河南思维轨道交通技术研究院有限公司,河南郑州450000 [2]山东科技大学电气与自动化工程学院,山东青岛266590

出　　处：《机车电传动》2019年第3期144-147,共4页Electric Drive for Locomotives

摘　　要：为了解决铁路监控设备远程监控系统在开关信号传输中的电压信号波动较大、系统不能正常识别的问题,分析了开关量远程检测的主要概念,提出了采用模拟量信号的检测和A/D转换的新设计思想,并完成了电路设计。经现场测试,所设计电路在低压监控系统中能完成开关量的远程精确检测和通信,系统运行状况稳定可靠。In order to solve the problem of the fluctuation of voltage signal and abnormal recognition in switch signal transmission of the railway monitoring equipment remote monitoring system,the main concepts of remote detection of switching volume were analyzed,a new design idea,which used analog signal detection and A/D conversion,was proposed,and the circuit design was completed.The field test showd that the designed circuit could realize remote accurate detection and communication of switching quantity in low voltage monitoring system,and the system run stably and reliably.

关 键 词：开关量 远程检测 A/D转换 监控系统 

分 类 号：U283.1[交通运输工程—交通信息工程及控制]