Vehicle fault detection method and device, vehicle and storage medium

A technology for vehicle faults and detection methods, which is applied to vehicle components, brake transmissions, transportation and packaging, etc., can solve the problems of vacuum system fault detection defects, hidden dangers of vehicle driving safety, and inability to detect vacuum system faults, etc. Hidden dangers in driving safety and the effect of enhancing safety

Active Publication Date: 2020-02-21
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the fault detection of the vacuum pump is limited to determining whether the voltage of the pressure sensor of the vacuum pump is in the normal range. When the voltage of the pressure sensor of the vacuum pump is in the normal range, it is determined that the vacuum pump is not faulty. The above technical solution has defects in the fault detection of the vacuum system. The failure of the vacuum system cannot be detected when the voltage is within the normal voltage range, and there are potential safety hazards when driving the vehicle

Method used

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  • Vehicle fault detection method and device, vehicle and storage medium
  • Vehicle fault detection method and device, vehicle and storage medium
  • Vehicle fault detection method and device, vehicle and storage medium

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Embodiment 1

[0031] figure 1 It is a flow chart of a vehicle fault detection method provided by Embodiment 1 of the present invention. This embodiment is applicable to the detection of faults of sensors related to vehicle vacuum pumps. The method can be executed by a vehicle fault detection device, which can use hardware and / or implemented by software, see figure 1 , the method provided by the embodiment of the present invention includes:

[0032] Step 101 , acquiring the vacuum pump on state, the brake pedal state, the vacuum pressure of the vacuum pump sensor and the environment pressure of the environment sensor.

[0033] Wherein, the vacuum pump can be a device that provides a vacuum source in the vehicle. When the vacuum pump is turned on, it can provide a vacuum for the vehicle. When the brake pedal is stepped on, the vehicle can start to decelerate. When the brake pedal is not stepped on, the original driving state of the vehicle can be maintained; the vacuum pump sensor can be s...

Embodiment 2

[0043] figure 2 It is a flow chart of a vehicle fault detection method provided by Embodiment 2 of the present invention. The embodiment of the present invention is based on the embodiment of the above invention. See figure 2 , the method of the embodiment of the present invention includes:

[0044] Step 201. Acquire voltage signals of the vacuum pump sensor and the environment sensor respectively.

[0045] Among them, the voltage signal can be a signal to measure whether the vacuum pump sensor and the environmental sensor are working normally. When the voltage signal is too high or too low, neither the vacuum pump sensor nor the environmental sensor can work normally. For example, when the voltage signal is too high, the vacuum pump sensor can Can be in the fault of high voltage, when the voltage signal is too low, the vacuum pump sensor can be in the fault of low voltage.

[0046] In the embodiment of the present invention, in order to further improve the detection of vehi...

Embodiment 3

[0101] Figure 8 It is a schematic structural diagram of a vehicle fault detection device provided in Embodiment 3 of the present invention, which can execute the vehicle fault detection method provided in any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method. The device can be implemented by software and / or hardware, and specifically includes: a parameter acquisition module 410 , a vacuum failure module 420 and an environment failure module 430 .

[0102] The parameter acquisition module 410 is configured to acquire the vacuum pump opening state, the brake pedal state, the vacuum pressure of the vacuum pump sensor and the ambient pressure of the environmental sensor.

[0103] The vacuum fault module 420 is configured to determine a preset pressure change trend according to the vacuum pump on state and the brake pedal state, and detect a vacuum pump sensor fault according to the vacuum pressure and the...

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Abstract

The embodiment of the invention discloses a vehicle fault detection method and device, a vehicle and a storage medium. The method comprises the following steps of obtaining a vacuum pump starting state, a braking pedal state, the vacuum pressure of a vacuum pump sensor and the environmental pressure of an environment sensor; according to the vacuum pump starting state and the braking pedal state,determining a preset pressure change tendency, and according to the vacuum pressure and the pressure change tendency, detecting the faults of the vacuum pump sensor; and when the vacuum pump sensor isunder a normal working state, obtaining pre-stored vacuum pump ultimate pressure, and according to the ultimate pressure and the environmental pressure, detecting the faults of the environment sensor. By use of the technical scheme of the embodiment of the invention, the fault of a vacuum system is detected when the voltage of the vacuum sensor is under a normal range, the fault detection accuracy of the vacuum pump system is improved, and vehicle driving safety can be enhanced.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of automation control, and in particular to a vehicle fault detection method, device, vehicle and storage medium. Background technique [0002] With the development of social economy, automobiles are gradually integrated into all aspects of life, but with the popularization of automobiles, unprecedented pressure is brought on the environment and energy. Therefore, electric vehicles and hybrid vehicles have become the current development trend recognized in the world. At present, electric vehicles use a vacuum pump to evacuate the brake system to provide power assistance. When the driver steps on the brake pedal, the pressure difference between the atmospheric pressure and the vacuum tank is used to provide brake boost. At the same time, the vacuum degree in the vacuum tank is reduced. When the vacuum is reduced to a certain level, the vacuum pump can be used to replenish the vacuum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T17/22B60T13/46
CPCB60T13/46B60T17/22
Inventor 庞尔超赵永强张强李军刘建康刘元治
Owner CHINA FIRST AUTOMOBILE
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