Vehicle braking fault diagnosis device and method

Abstract

The invention discloses a vehicle braking fault diagnosis device which is used for diagnosing types of vehicle braking faults. The braking fault diagnosis device is characterized by comprising a braking detection unit which is used for detecting the stroke of a brake pedal of a vehicle, a potential detection unit which is used for detecting the potential of a braking switch main circuit and the potential of a brake switch auxiliary circuit of the vehicle, and a control unit which is connected with the braking detection unit and the potential detection unit and is used for determining the typesof the vehicle braking faults according to the stroke of the brake pedal detected by the braking detection unit and the potential of the braking switch main circuit and the potential of the braking switch auxiliary circuit detected by the potential detection unit when it is determined that the vehicle braking faults occur. The invention further discloses a vehicle braking fault diagnosis method.According to the stroke of the brake pedal of the vehicle, the potential of the braking switch main circuit and the potential of the braking switch auxiliary circuit, whether the braking switch faultsare braking switch sticking or braking circuit faults is determined, and a prompt is issued in time.

Description

technical field [0001] The invention relates to the technical field of vehicle fault diagnosis, in particular to a vehicle brake fault diagnosis device and method thereof. Background technique [0002] Vehicle braking is a link that the driver will inevitably contact while driving the vehicle, and the effect of vehicle braking directly affects the life safety of the driver and pedestrians. The most critical link in vehicle braking is the braking effect of the vehicle's brake pedal. The vehicle's brake pedal is connected to brake lights, anti-lock brakes, brake control, torque control, etc. [0003] At present, the existing types of vehicle brake failure include brake circuit failure and brake switch sticking. When a vehicle brake failure occurs, the vehicle mainly manifests as insufficient or no driving force. In more cases, the vehicle control The system is unable to distinguish specific fault types and issue corresponding fault reminders according to the fault types, resu...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing types of vehicle brake failure include brake circuit failure and brake switch sticking. When a vehicle brake failure occurs, the vehicle mainly manifests as insufficient or no driving force. In more cases, the vehicle control The system cannot distinguish specific fault types and issue corresponding fault reminders according to the fault types, resulting in traffic accidents caused by most drivers driving vehicles with brake faults. How to judge the type of brake faults of vehicles and improve the accuracy of brake fault judgment has become a major issue. problem

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