Method and device for controlling vehicle control unit in ECP system to safely exit

Abstract

The invention provides a method and device for controlling a vehicle control unit in an ECP system to safely exit. The method specifically comprises the steps that the current train pipe pressure reduction amount of a train is detected when a control instruction of existing an ECP mode is received; a target vehicle brake cylinder pressure value is calculated according to the train pipe pressure reduction amount and the corresponding relationship of preset train pipe pressure reduction amount and a vehicle brake cylinder pressure value; a current vehicle brake cylinder pressure value of the train is regulated to the target vehicle brake cylinder pressure value; the vehicle control unit exits the ECP mode when the current vehicle brake cylinder pressure value of the train is regulated to the target vehicle brake cylinder pressure value. According to the method and device for controlling the vehicle control unit in the ECP system to safely exit, the vehicle control unit is controlled to efficiently and safely exit the ECP mode on the premise of ensuring the operation safety and operation efficiency of the train.

Description

technical field [0001] The invention relates to the technical field of railway locomotive brake control, and more specifically relates to a method and a device for controlling the safe exit of a vehicle control unit in an ECP (wired electronically controlled air brake) system. Background technique [0002] Heavy-duty transportation technology has been recognized internationally as the direction of railway freight development. With the increase of the length, load and speed of the wagon formation, the handling of long and heavy-duty trains is faced with severe braking problems. The traditional freight car braking system relies on compressed air to transmit braking commands, but due to its low braking wave velocity, the synchronization of braking between vehicles is poor, resulting in excessive longitudinal impulse of the train, which affects the safety and operating efficiency of the train. Based on this, the prior art proposes an ECP (Electronic Controlled Pneumatic Brake) ...

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Problems solved by technology

[0005] However, the inventors of the present invention have studied the above-mentioned prior art and found that if after the vehicle control unit exits the ECP mode, when the current train pipe pressure is the maximum pressure value, all vehicles will be relieved, and it is very likely that the train slips at this time. car phenomenon, there is a greater safety hazard

And if the train pipe pressure is discharged to zero in advance before the vehicle control unit exits the ECP mode, although this operation has guaranteed that the train will not slip, but in the case of a long train (up to 200 vehicles), the train will It will take a long time (about 20 minutes) for the tube to be filled with air to the maximum value to realize the start of the train, which will undoubtedly reduce the operating efficiency of the train

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