Method and system for controlling brake cylinder pressure of a vehicle
A technology of brake cylinder pressure and vehicle brake cylinder, applied in the direction of brakes, vehicle components, brake transmission devices, etc., can solve the problems of large error of 120 distribution valve, braking deceleration of the preceding vehicle, and low braking wave speed, etc. Achieve the effect of meeting the braking control requirements, speeding up the transmission speed, and achieving accurate control
Active Publication Date: 2017-03-08
QINGDAO SRI TECH CO LTD
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Problems solved by technology
Because the traditional vehicle braking system uses compressed air to transmit the braking command, it has the disadvantages of low braking wave speed and large error in the braking force control of the 120 distribution valve. Therefore, for large and heavy trains, if the traditional vehicle braking system is used , it is easy to cause the vehicle in front of the train to receive the braking command, but the vehicle behind does not receive the braking command, so that the braking of the front and rear vehicles is not synchronized, causing the vehicle in the front to brake and decelerate, and the vehicle behind does not decelerate, so that the vehicle behind The vehicle has a large impact on the vehicle in front
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[0065] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0066] The embodiment of the invention discloses a method and system for controlling the brake cylinder pressure of a vehicle, so as to realize accurate control of the pressure of the brake cylinder of the vehicle and meet the braking control requirements of long and heavy trains.
[0067] see figure 1 , a flow chart of a method for controlling brake cylinder pressure of a vehicle disclosed in an embodiment of the present invention, comprising steps:
[0068]...
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The invention discloses a method and a system for controlling the pressure of a brake cylinder of a vehicle. A received brake control instruction is used as a trigger signal, and when the condition that any one of a full brake interlocking signal or a punishment brake interlocking signal exists currently is detected, a brake cylinder pressure value corresponding to the interlocking signal is output; when the condition that the two interlocking signals do not exist is detected, an output brake cylinder pressure value is determined according to the working condition of an ECP (electrical-controlled pneumatic brake) system, the current brake cylinder pressure value and the brake cylinder pressure value corresponding to the brake control instruction. Compared with the traditional method, the method has the advantages that the transmission mode of the brake control instruction is changed from the traditional compressed air transmission to electric signal transmission through the ECP system, and the transmission speed is not influenced by brake wave velocity and is improved; the output brake cylinder pressure value is determined according to the working condition of the ECP system, the current brake cylinder pressure value and the brake cylinder pressure value corresponding to the brake control instruction, and the control accuracy is greatly improved compared with the control accuracy of the traditional method.
Description
technical field [0001] The invention relates to the technical field of locomotive brake control, and more specifically, to a method and system for controlling pressure of a brake cylinder of a vehicle. Background technique [0002] The traditional vehicle braking system relies on the train pipe air pressure change (ie compressed air) to transmit the braking command, and then controls the vehicle brake cylinder pressure through the 120 distribution valve in response to the train pipe pressure change. [0003] In order to meet the needs of economic development, the number of vehicles included in trains has increased, and has gradually developed in the direction of growth and weight. Because the traditional vehicle braking system uses compressed air to transmit the braking command, it has the disadvantages of low braking wave speed and large error in the braking force control of the 120 distribution valve. Therefore, for large and heavy trains, if the traditional vehicle brakin...
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IPC IPC(8): B60T13/74
CPCB60T13/66B60T13/741
Inventor 胡跃文周士华乐燕飞谢军威饶煜刘泉
Owner QINGDAO SRI TECH CO LTD