Diagnosis method and device of electric car

A technology for electric vehicles and diagnostic methods, applied in electrical testing/monitoring and other directions, can solve problems such as inability to obtain expert knowledge in a timely and effective manner, inability to predict failures, and unclear costs, so as to achieve automatic and intelligent failure detection and real-time The effect of forecasting and avoiding safety hazards

Active Publication Date: 2014-06-04
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these technologies rely heavily on expert knowledge, which cannot be obtained in a timely and effective manner in many cases
Furthermore, existing fault diagnosis methods cannot predict failures and, therefore, cannot preven

Method used

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  • Diagnosis method and device of electric car
  • Diagnosis method and device of electric car
  • Diagnosis method and device of electric car

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Embodiment Construction

[0042] A detailed description will be given below of embodiments of the present invention. Although the present invention will be described and illustrated in conjunction with some specific embodiments, it should be noted that the present invention is not limited to these embodiments. On the contrary, any modification or equivalent replacement made to the present invention shall be included in the scope of the claims of the present invention.

[0043] In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, processes, components and circuits are not described in detail so as to highlight the gist of the present invention.

[0044] figure 1 Shown is an automotive diagnostic system 100 in accordance with an embodiment of the present i...

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Abstract

The invention discloses a diagnosis method and device of an electric car. The diagnosis method comprises the steps that mode sensitive features are extracted according to state data flow expressing the operation states of the electric car; feature evaluation is carried out on the operation states of the electric car according to the mode sensitive features; a mode bank comprising the normal mode and a plurality of fault modes is built according a result of the feature evaluation; multiple similarities between the multiple modes in the mode bank and the data flow expressing the real-time operation states of the electric car are calculated and compared; a fault warning signal is generated according to the comparison result. The diagnosis method and device of the electric car achieve real-time forecast of faults, improve the efficiency, and provide basis for remote diagnosis decision making of the electric car. Meanwhile, manual participation is reduced, and potential safety hazard generated by labor is avoided.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a fault diagnosis method and a diagnosis device for electric vehicles. Background technique [0002] With the development of science and technology, the degree of electronics in automobiles is getting higher and higher. For example, technologies such as ABS, ASR, airbags, and engine electronically controlled injection are continuously applied to automobiles. Automotive electronic control equipment can process various information quickly and accurately, and display it through the vehicle instrument, so that the driver can understand and grasp the running status of the car in time, and properly handle various situations. However, the higher the degree of electronic control, the more instruments and parameters are involved, and the more difficult the fault diagnosis of the car is. [0003] The methods for solving the safety problems of electric vehicles in the prior art include: fa...

Claims

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Application Information

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IPC IPC(8): G05B23/02
Inventor 杜常清李晃朱一多颜伏伍赵奕凡
Owner WUHAN UNIV OF TECH
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