Relay state monitoring system and method for railway signal circuit

Abstract

The embodiment of the invention discloses a relay state monitoring system and method for a railway signal circuit. The system comprises a contact resistance data acquisition system which comprises a plurality of infrared temperature measurement sensors and is used for acquiring temperature information of corresponding relay contact positions and converting the temperature information into relay contact resistance information; a station machine which is used for carrying out communication protocol conversion and uploading on the relay contact resistance information; and a data processing systemwhich is used for carrying out comparative analysis on the relay contact resistance information and a corresponding preset relay contact resistance threshold range, and carrying out contact resistance fault judgment, fault early warning or fault alarm of the corresponding relay. According to the embodiment of the invention, the centralized monitoring of each relay in the railway signal circuit isrealized, various relay contact faults can be early warned, timely warning is carried out when the relay contact faults occur, the timely processing of the faults is ensured, and the normal rail transit is prevented from being influenced by abnormity of the railway signal circuit.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of rail transit, and in particular to a system and method for monitoring the state of a railway signal circuit relay. Background technique [0002] Relay is a general term for all kinds of relays used in railway signals. Including the relays used in the switch conversion control circuit, the signal lighting control circuit, and the two-element two-position relay and other relays for other purposes. Railways have strict requirements on relays; the contact system must act consistently, reliably and accurately; have a long service life; have sufficient functions of closing and breaking circuits; maintain high electrical insulation when the external temperature and humidity change greatly Strength; has stable time characteristics and electrical parameter characteristics. According to the action principle, it can be divided into electromagnetic relay, induction relay and thermal relay;...

AI Technical Summary

Problems solved by technology

[0003] The working state of the relay directly reflects whether the signal equipment is working normally, and even affects driving safety

For example, the filament relay used in the lighting control circuit, its abnormal working state parameters will affect the brightness of the signal light; it will also affect whether the relay can be picked up or dropped normally, resulting in abnormal state of the signal light, which will affect the safety and normal operation of the train

Not only that, the working state of the relay will also cause abnormal operation of the switch control circuit, resulting in the abnormal movement of the switch, which also affects the safety and efficiency of driving

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