地铁屏蔽门继电器在线监测与离线检测研究

On-line Monitoring and Off-line Detection of Relays for Subway PSDs

基于地铁屏蔽门故障监测,研究屏蔽门继电器在线监测和离线检测的方法。在线监测系统能够对控制电路中的关键回路和继电器接点进行实时监测,能够显示故障回路,缩小故障查询范围,记录监测点的性能指标,分析比较监测点的长期变化规律,超出安全阈值时,报警并提示故障发生位置。系统设计以“故障导向安全”为原则,传感器布置采用有效隔离措施,不干扰既有设备的正常运行。离线检测系统弥补在线监测的测量局限,可以提供屏蔽门继电器的所有电气参数,为故障继电器的彻底维修提供检测标准。

Based on the fault monitoring of subway platform screen door(PSD),the methods of on-line monitoring and off-line detection of PSD relay are studied.The online monitoring system is capable of real-time monitoring of key circuits and relay contacts in control circuits,displaying faulty circuits,narrowing down fault queries,recording performance indicators of monitoring points,analyzing and comparing long-term change patterns of monitoring points,alarming and indicating the location of faults when safety thresholds are exceeded.The system design is based on the Fail safe principle,and effective isolation measures are adopted to arrange the sensors without interfering with the normal operation of the existing equipment.Off-line detection system makes up for the measurement limitation of on-line monitoring,provides all the electrical parameters of the PSD relay,and provides a test standard for the thorough repair of faulty relays.