A kind of led signal machine control system

Abstract

The invention provides an LED signal control system, which includes an induced voltage elimination module and an LED lighting module, wherein the induced voltage elimination module is used to eliminate the induced voltage generated when the LED lighting module is turned off, and is disconnected before the LED lighting module is turned on. Close before the LED light-emitting module turns off. In the LED signal control system provided by the present invention, an anti-interference voltage circuit is designed at the front end of the power supply to suppress induced voltage. Set dual power supply, through the selection switch, when one power supply is damaged, the other power supply can be seamlessly connected to ensure the stable operation of the power supply. By setting the dummy load unit, the reliable excitation of the filament relay is ensured. And set the induced voltage elimination unit to eliminate the induced voltage generated by the tolerance between the cables due to the connection of dummy loads or the excessive length of the line. And using the system can save more than 60% of energy and is more environmentally friendly.

Description

technical field [0001] The invention relates to an outdoor railway signal control system, in particular to an LED signal control system capable of improving the stability of the railway signal. Background technique [0002] In the past, the railway signal lights used a single incandescent lamp, and the luminous principle of the incandescent lamp was realized by using the principle of the object to be heated and luminescent and the principle of heat radiation. Incandescent lamps have the advantages of simple preparation process, low cost, easy adjustment and control of brightness, good color rendering, and color rendering index Ra=100. Light energy, low luminous efficiency; low color temperature, generally 2700-3100K; short service life, generally 1000-3000 hours, and the fluctuation of power supply voltage makes the service life of incandescent lamps even shorter. Frequent replacement of railway signal lights is not only labor-intensive, but also causes great safety hazards...

AI Technical Summary

Problems solved by technology

Incandescent lamps have the advantages of simple preparation process, low cost, easy adjustment and control of brightness, good color rendering, and color rendering index Ra=100. Light energy, low luminous efficiency; low color temperature, generally 2700-3100K; short service life, generally 1000-3000 hours, and the fluctuation of power supply voltage makes the service life of incandescent lamps shorter

[0004] Although the service life of the existing LED signal machine has been greatly improved, there are still some problems, such as 1) the anti-interference ability is poor. The cold resistance is very small, so the existing LED signal machine is more likely to be falsely illuminated by external interference than the incandescent lamp, which reduces the stability of the LED signal machine

2) The number of open circuit faults increases, and LED signal machines are prone to burnout of relays and transformers due to breakdown of rectifier devices

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