Anti-slide valve power supply control circuit of high speed train

Abstract

The invention relates to an anti-slide valve power supply control circuit of a high speed train. The anti-slide valve power supply control circuit mainly comprises an isolation optical coupler, an MOSFET (Metal-Oxide-Silicon Field-Effect Transistor), a Darlington transistor, two charging and discharging capacitors, a power supply control relay and necessary resistors. The circuit smartly utilizes the matching of the MOSFET and the Darlington transistor to respectively complete charging and discharging of capacitors so that the relay keeps an electrification state when PWM (Pulse Wavelength Modulation) signals are input. The make-and-break of the MOSFET (Metal-Oxide-Silicon Field-Effect Transistor) and the Darlington transistor is realized through the PWM signals so as to realize charging and discharging of the capacitors in each stage and maintain the control of a driving output relay. When the PWM control signals are in failure, the relay can be quickly cut off, and an anti-slide power supply is reliably cut off under the condition that the anti-slide valve or a driving circuit thereof or the anti-slide valve power supply control circuit is in failure, so that normal work of a braking system is ensured, and the safety and reliability of the braking system and the high speed train are improved.

Description

technical field [0001] The invention relates to a high-speed train anti-skid valve power supply control circuit and belongs to the technical field of high-speed train braking. Background technique [0002] With the increasing scale and speed of my country's railway high-speed train transportation, higher requirements are put forward for the safety of transportation vehicles, among which the safety and reliability of the braking system are particularly important. The anti-skid valve is the core component of the braking system, which has a great impact on the braking system. If the anti-skid valve or its driving circuit fails, it may cause the braking system to fail and cause major safety accidents and major economic losses. Therefore, from the perspective of safety Considering the perspective, design a reliable and effective anti-skid valve power control to avoid failure of the braking system due to failure of the anti-skid valve, its drive circuit or anti-skid valve power co...

AI Technical Summary

Problems solved by technology

The anti-skid valve is the core component of the braking system, which has a great impact on the braking system. If the anti-skid valve or its driving circuit fails, it may cause the braking system to fail and cause major safety accidents and major economic losses. Therefore, from the perspective of safety Conside...

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