Method and system for detecting fault of wiper rubber strip based on wobble state

A fault detection and wiper blade technology, applied in the field of vehicle fault diagnosis, can solve problems such as random interference, judgment errors, excessive data processing, and achieve good accuracy and real-time performance, easy maintenance and replacement, and simple system structure. Effect

Active Publication Date: 2019-04-02
XIAMEN UNIV OF TECH
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  • Abstract
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Problems solved by technology

However, the prior patent does not disclose detailed image processing and detection methods, which are relatively difficult to implement
Mainly manifested in: On the one hand, when the wiper is in use, it is a dynamic process. The image is collected during the dynamic state, and the collected position status of the wiper is varied, and the pre-stored reference image is limited, resulting in difficulty in comparison and large errors. , and the amount of data processing is too much; on the other hand, the dynamically collected wiper blade image also contains random interference of the background image information of the traffic environment, so it is easy to make a judgment error when compared with the pre-stored reference image
If it is to

Method used

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[0041] The present invention will be described in further detail below with reference to the drawings and specific embodiments.

[0042] The present invention discloses a method for detecting the fault of the wiper blade rubber strip based on the shaking state. The method is specifically as follows: when the wiper blade is working, the vehicle windshield image is collected through the image acquisition module to extract the image information of the wiper blade , Calculate and fit the angular velocity curve of the wiper blade, judge whether the wiper blade is jittery according to the change characteristics of the angular velocity, and judge whether the wiper blade rubber strip needs to be replaced.

[0043] When it is judged that the wiper blade rubber strip is aging or worn and needs to be replaced, the information reminding of replacing the wiper blade rubber strip is given to encourage the driver to replace the wiper blade rubber strip in time to improve driving safety in rainy days.

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Abstract

The invention discloses a method and system for detecting the fault of a wiper rubber strip based on a wobble state. The method comprises during the operation of a wiper, acquiring an image of the windshield of a vehicle by an image acquisition module, extracting the image information of the wiper, calculating and fitting the angular velocity curve of the wiper, determining whether the wiper has awobble phenomenon according to the numerical change characteristic of the angular velocity, and determining whether the wiper rubber strip is required to be replaced. The invention also discloses a detection system based on the detection method. The method determines whether the wiper wobbles by the principle of the angular velocity change of the wiper, is simple in principle and structure, and has good accuracy and real-time performance.

Description

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Claims

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Application Information

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Owner XIAMEN UNIV OF TECH
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