Residual current detection and early warning system for road traffic signal lamp

Abstract

The invention discloses a residual current detection and early warning system for a road traffic signal lamp. The residual current detection and early warning system comprises a leakage detection platform, an electrical safety monitoring host, a residual current monitor, a water sensor, an intelligent circuit breaker and a WeChat client; the leakage detection platform is connected with the electrical safety monitoring host through the Internet; the leakage detection platform provides the Web service for the WeChat client; the electrical safety monitoring host is physically connected with the water sensor through an I / O signal line; the electrical safety monitoring host is physically connected with the residual current monitor through an RS-485 interface; and the electrical safety monitoring host is physically connected with the intelligent circuit breaker through an RS-485 signal line. The residual current detection and early warning system for the road traffic signal lamp provided bythe invention can replace a traditional manual inspection mechanism, realize online real-time monitoring and control, timely prevent and resolve the risk of leakage, improve the work efficiency, reduce the maintenance costs, and ensure the electricity safety of traffic signal lamps.

Description

technical field [0001] The invention relates to the field of electric leakage detection and automatic control, in particular to a residual current detection, early warning and control system for road traffic signal lamps. Background technique [0002] At present, the mainstream road traffic signal light system uses 220V AC power supply, and the power supply line controls the light on, off and flashing functions of the signal light. Therefore, the signal light cable is both a power supply cable and a control cable. [0003] The traffic lights in our country have a double waterproof design, and the shell of the signal light group and each light-emitting unit have certain waterproof capabilities. In contrast, the signal light lines flow out from the traffic signal control cabinet on the roadside, and are connected to each traffic signal light group through the underground special pipeline at the intersection. Only rubber sheaths and waterproof tapes are used for waterproofing,...

AI Technical Summary

Problems solved by technology

After long-term load work, load-bearing rolling, water intrusion, brutal construction, rat infestation, corrosion and other factors, some cables will have damage to the protective layer and reduced insulation resistance.

[0006] (2) Irregular handling of light wire connectors

When installing or maintaining cables, due to the limitation of the current situation of the embedded pipelines, it is impossible to achieve the "one light and one line" required in the "Road Traffic Signal Lighting Installation and Installation Specifications (GB14886-2006)", and they are often connected in parallel on the available cables.

If the parallel connection position is in a position susceptible to water immersion, and no waterproof measures are taken, it is also likely to become a leakage fault point

[0008] (3) Poor grounding

The traditional manual inspection mechanism has been unable to prevent the occurrence of such incidents. Only by building an online system for monitoring signal light cable leakage current, realizing real-time monitoring and alarming, historical data analysis, and risk trend judgment can timely prevent and resolve leakage risks.

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