Downhill automatic driving method for heavy-haul trains based on moving block
A heavy-duty train and automatic driving technology, applied in the field of rail transit, can solve the problems of poor braking performance of heavy-duty trains, long braking establishment time, insufficient brake cylinder pressure, etc., and achieve the effect of ensuring efficient operation.
Active Publication Date: 2019-09-17
CHINA SHENHUA ENERGY CO LTD +2
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Problems solved by technology
[0003] Compared with ordinary trains, the braking performance of heavy-duty trains is poor. If the ordinary automatic driving method is followed on a long downhill slope, continuous overspeeding will occur. After the train overspeeds, the braking will be automatically applied. , when the speed is lower than the recommended speed, it will be automatically relieved. Due to the large mass of the train, the brake will take a long time to build up, and the train is on a downhill slope.
Since the heavy-duty train adopts air brake, it needs to be filled with air after each brake, and the air can be filled first before braking again, so as to ensure the braking force of each brake. If continuous braking occurs, the pressure of the brake cylinder will be insufficient. , it is difficult to meet the braking performance, so that the train is in a dangerous state
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[0022] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and not to limit the present invention.
[0023] figure 1 It is a flowchart of a method for automatic driving downhill of a heavy-duty train based on a moving block provided by an embodiment of the present invention. Such as figure 1 As shown, a method for automatically driving downhill of a heavy-duty train based on moving block includes:
[0024] Step S11, judging whether the heavy-duty train is braking;
[0025] Step S12, when the heavy-duty train is not braking, it is determined whether the gradient equivalent acceleration exceeds the maximum deceleration of the electric brake;
[0026] Step S13, when the gradient equivalent acceleration does not exceed the maximum deceleration of the electric brake, determine whet...
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The invention relates to rail transportation, and discloses a downhill automatic driving method for a heavy-load train based on movement blocking. The downhill automatic driving method comprises the steps that whether the heavy-load train is braked or not is judged; when the heavy-load train is not braked, whether a slope equivalent accelerated speed exceeds a maximum decelerated speed of electric braking is judged; when the slope equivalent accelerated speed does not exceed the maximum decelerated speed of the electric braking, whether a heavy-load train speed is higher than an early warning recommended speed is judged; when the heavy-load train speed exceeds the early warning recommended speed, a coasting instruction is output to guarantee that the heavy-load train does not accelerate. According to the downhill automatic driving method for the heavy-load train based on the movement blocking, the heavy-load train cannot brake again in sufficient time, and high efficiency running of the heavy-load train and safety of automatic driving are guaranteed.
Description
Technical field [0001] The present invention relates to rail transit, in particular to a method for automatically driving downhill of a heavy-duty train based on moving blockage. Background technique [0002] Currently used trains based on mobile block, in terms of automatic driving, the on-board equipment mainly calculates the traction braking percentage based on information such as electronic maps, vehicle speed and driving permits. The on-board equipment uses the current or voltage range of the interface agreed with the vehicle to drive the vehicle. According to the calculated traction braking results, the vehicle is controlled by traction braking. The on-board equipment transmits the traction braking command to the vehicle interface bus. The vehicle interface bus performs pulse width modulation according to the command value, and controls the traction or braking of the vehicle according to the pulse signal. The purpose of autonomous driving. [0003] Heavy-duty trains have poo...
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IPC IPC(8): B61L27/04
Inventor 刘波曹广河孟宪洪黄友能唐涛肖骁周宪宝刘金瑞何占元徐炳辉李志云
Owner CHINA SHENHUA ENERGY CO LTD