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Vehicle brake signal diagnosis method and device

A braking signal and vehicle braking technology, applied in the field of vehicles, can solve the problems of unreliable brake light signal, brake line signal and long waiting time

Active Publication Date: 2020-01-31
VITESCO AUTOMOTIVE ELECTRONICS (CHANGCHUN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this method is that it may take a long time to obtain the time difference, and it is impossible to specifically determine whether the brake light signal or the brake line signal is unreliable, and cannot provide direct support for vehicle maintenance

Method used

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  • Vehicle brake signal diagnosis method and device
  • Vehicle brake signal diagnosis method and device
  • Vehicle brake signal diagnosis method and device

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Embodiment Construction

[0035] In order to make the technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts also fall within the protection scope of the present invention.

[0036] figure 1 It is the first schematic flow chart of the vehicle braking signal diagnosis method provided by the embodiment of the present invention. like figure 1 As shown, in step S101, a plurality of brake signals are detected. The plurality of braking signals may include a brake line status signal, a brake light status signal or a brake master cylinder pressure status signal and the like.

[0...

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Abstract

The embodiment of the invention provides a vehicle brake signal diagnosis method and device. The vehicle brake signal diagnosis method comprises the steps of detecting a plurality of brake signals; starting counting when any one of the plurality of brake signals is changed; after a preset time, judging whether the plurality of brake signals are consistent with each other or not; and if so, judgingthat the plurality of brake signals are normal; and otherwise, judging that an abnormal brake signal exists in the plurality of brake signals. The vehicle brake signal diagnosis device comprises a detection module, a timing module and a judging module. According to the vehicle brake signal diagnosis method and device, the plurality of brake signals can be diagnosed with small detection time number within a shorter time.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a vehicle braking signal diagnosis method and device. Background technique [0002] The braking signal of the vehicle is used to indicate that the driver has performed a braking operation on the vehicle, and the braking signal may include a brake line signal, a brake light signal, a brake light test signal, a brake master cylinder pressure signal, a speed reduction indication signal, and the like. The vehicle's controller can collect one or more of these signals for vehicle control, and the braking signal will be used for calculation of engine idle speed and torque, and used to participate in important functions such as cruise, idle start and stop, etc. Accurate and reliable braking signals are the basis for realizing the above functions. When the braking signals are unreliable, related functions will be forced to be disabled, and the vehicle may need to be switched to limp mode...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T17/22
CPCB60T17/22
Inventor 刘宇
Owner VITESCO AUTOMOTIVE ELECTRONICS (CHANGCHUN) CO LTD