A rail vehicle brake control unit

Abstract

The invention discloses a brake control unit for a railway vehicle. The brake control unit comprises a brake control part and an axle non-rotation detection part which are electrically independent of each other. The brake control part comprises a pneumatic brake control unit, a wheel sliding protection unit, an MVB network communication port and a serial port communication port. The axle non-rotation detection part comprises an axle speed anomaly detection unit, an MVB network communication port and a serial port communication port. The pneumatic brake control unit can conduct brake instruction receiving, brake force calculating, EP current control, EP current lag compensation control and the like. The wheel sliding protection module can conduct sliding and locking detection, sliding prevention and locking prevention control, tread sweeping control and ATC axle sliding state output. The axle speed anomaly detection unit judges whether a certain axle is locked or not or whether the speed of the axle is abnormal or not. The independent axle non-rotation detection part is arranged in the brake control unit, and therefore the working current of a speed sensor can be independently monitored and reported to a vehicle diagnosis device, and the safety level of the brake control unit is increased.

Description

technical field [0001] The invention relates to a vehicle braking control system, in particular to a rail vehicle braking control unit. Background technique [0002] The electronic brake control unit (EBCU) together with the air brake control unit constitutes the brake control device, which is mainly used for the reception of external input signals, the control of solenoid valves and the output of control signals. [0003] Existing EMUs generally adopt an autonomous and decentralized braking force management method. In this method, the calculation of the braking force of each vehicle is relatively independent, and the braking force of the entire vehicle cannot be uniformly distributed, and the braking force cannot be adjusted according to the operating conditions of the entire vehicle. Perform balanced distribution; or use the CAN bus-based internal network for braking force management. Once the controller responsible for braking force management fails, the vehicle will lose...

AI Technical Summary

Problems solved by technology

[0003] Existing EMUs generally adopt an autonomous and decentralized braking force management method. In this method, the calculation of the braking force of each vehicle is relatively independent, and the braking force of the entire vehicle cannot be uniformly distributed, and the braking force cannot be adjusted according to the operating conditions of the entire vehicle. Perform balanced distribution; or use the CAN bus-based braking internal network for braking force management. Once the controller responsible for braking force management fails, the vehicle will lose the function of braking force distribution

[0004] In addition, the existing EMU electronic brake control unit does not have an independent axle non-rotation detection function, mainly based on the speed signal collected by the brake control part to judge whether there is a certain axle locked or the axle speed is abnormal, and the corresponding fault The signal is reported to the train control system. When the brake control part fails, the state that the axle does not rotate cannot be reported to the train control system.

Images