LED signal machine control system

Abstract

The invention provides an LED signal machine control system, which comprises an induction voltage elimination module and an LED light emitting module, wherein the induction voltage elimination module is used for eliminating induction voltage generated when the LED light emitting module is off; and the induction voltage elimination module is cutoff before the LED light emitting module is on and is closed before the LED light emitting module is off. According to the LED signal machine control system provided by the invention, an anti-interference voltage circuit is designed at a power supply front end to suppress the induction voltage. Power supplies in two ways are set, through a selector switch, when a power supply in one way is damaged, the power supply in the other way is accessed seamlessly, and stable work of the power supplies is ensured. Through arranging a dummy load unit, reliable excitation of a filament relay is ensured. Through arranging the induction voltage elimination unit, induction voltage generated by tolerance between cables caused by access of the dummy load or an overlong line can be eliminated. When the system is used, more than 60% of the energy can be saved, and more green environmental protection can be realized.

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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