高速隧道监控系统的故障诊断设计分析与改进

Fault Diagnosis Design Analysis and Improvement of High-Speed Tunnel Monitoring System

高速隧道监控系统控制设备有着种类多、数量大、难管理、易损坏的特点,且隧道内空间封闭,环境恶劣,一旦高速隧道监控系统发生故障,将对高速公路的安全产生危害;因此良好的监控系统故障诊断能力对于高速公路的安全至关重要;文章结合军用产品测试性设计分析的流程和方法,提出了一套针对高速隧道监控系统的故障诊断分析与改进提升方法,根据系统设计架构进行故障模式与影响分析,得出系统故障模式以及故障率、严酷度等信息,进而针对性地开展BIT诊断电路设计改进,使故障诊断对故障率和严酷度高的故障覆盖率达到80%,为高速隧道监控系统设计开发提供更高效的思路和技术途径。

The control equipment of high-speed tunnel monitoring system has the characteristics of many kinds,large quantity,difficult to manage and easy to damage.The space in the tunnel is closed and the environment is bad.Once the high-speed tunnel monitoring system breaks down,it will harm the safety of the expressway,so the good fault diagnosis ability of the monitoring system is very important to the safety of the expressway.Combined with the flow and method of test design analysis of military products,this paper presents a set of fault diagnosis analysis and improvement methods for high-speed tunnel monitoring system,according to the system design architecture,the fault mode and impact analysis are carried out and the failure rate and severity of the fault are obtained.The BIT diagnostic circuit design is improved to increase its fault diagnosis ability and make the fault coverage rate of high fault rate and severity reach 80%,which provides a more efficient way of technology for the design and development of high-speed tunnel monitoring system.