Inflation pump control method and device for air brake electric car

Abstract

The invention discloses an inflation pump control method and device for an air brake electric car, and relates o the field of inflation pump control methods. The inflation pump control method includes: determining if an inflation pump is in a starting up state or not; detecting the air pressure, determining if the air pressure is less than a lowest threshold or not, regularly measuring small air pressure values of an air storage tank set after the inflation pump starts working if so; differencing last five adjacent small air pressure values, and summing the differences to acquire an accumulative air pressure difference P; determining if an absolute value of the accumulative air pressure difference P is less a control threshold or not, and delaying 20 s and determining if the air pressure of the air storage tank set is greater than the lowest threshold or not during the period if so; allowing the inflation pump to stop working if so and jumping to air pressure detection; and allowing the inflation pump to work continuously if not till inflation is completed. The problem that the conventional inflation pumps are influenced by factors such as dryers, mechanical pressure adjustment andenvironments and result in poor control precision can be solved; stop is determined according to a stabile pressure, and the defects of poor control precision of the inflation pumps due to the fact the prior art is influenced by various factors can be overcome.

Description

technical field [0001] The invention relates to the field of air pump control methods, in particular to an air brake electric vehicle air pump control method and device. Background technique [0002] At present, the braking system of air brake electric vehicles generally replaces the electronic air pump on the basis of the original fuel vehicle. In order to save electric energy, other electronic devices detect the system air pressure to control the start and stop of the air pump; The air pump works, and when the air pressure is higher than the minimum threshold, the air pump stops (or stops after a delay); with the current control method, since the dryer in the air brake system needs to perform exhaust blowback for a certain period of time (this process is accompanied by system Air pressure drops), leading to poor control of the maximum threshold value and delay time, it is easy to cause insufficient or no backflushing time of the dryer or too long backflushing time, resulti...

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Problems solved by technology

[0014] The object of the present invention is: the present invention provides a control method and device for an air brake electric vehicle air pump, which solves the problem that the existing air pump control method is affected by dryers, mechanical pressure regulation and environmental factors, resulting in poor control accuracy of the air pump The problem

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