A parking brake redundant monitoring and diagnosis system and its control method

Abstract

The invention discloses a parking brake redundancymonitor system, including two braking electronic control units and two pressure sensors. A parking brake cylinder line is provided with a first pressure sensor and a second pressure sensor which directly detect the pressure of the parking brake cylinder line. The first pressure sensor is connected with a first braking electronic control unit. The first braking electronic control unit collects the pressure information of the first pressure sensor to judge parking brake condition and analyses the first pressure sensor condition. The second pressure sensor is connected with the second braking electronic control unit. The second braking electronic control unit collects the pressure information of the second pressure sensor to judge parking brake condition and analyses the second pressure sensor condition. With network connection and system control, the two braking electronic control units have the advantages of reliably monitoring parking brake conditions and triggering emergency braking to park with safety and accuracy.

Description

technical field [0001] The invention belongs to the field of railway transportation, and in particular relates to a parking brake redundancy monitoring and diagnosis system and control method for rail vehicles (including urban rail vehicles and EMUs). Background technique [0002] Rail vehicles, such as: urban rail vehicles and EMUs, are equipped with parking brake devices, which are used to apply non-attenuating spring brakes to the train when the train is parked for a long time, so as to maintain the braking capacity of the train. Since the parking brake is only used when the vehicle is stationary, if the parking brake is applied during the train operation, it may cause the train wheel to be scratched, which will seriously cause a train safety accident. Therefore, it is particularly important to monitor the state of the parking brake device when the train is running, and if a parking brake application failure occurs during operation, the train must automatically stop to en...

AI Technical Summary

Problems solved by technology

[0004] However, when the single pressure switch or control circuit used for detection fails in the existing monitoring method, it will not be able to correctly reflect the parking brake status, which will lead to false alarm failures, and may cause the parking brake cylinder to fail to reflect the braking status. , or the train stops due to false alarms, bringing risks to operations

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