Wiper cleanliness detection method

Abstract

The invention provides a method for detecting the cleanliness of a wiper, comprising the following steps: A, cleaning and drying the windshield; B, spraying a mixed liquid simulating outdoor pollution on the windshield and waiting for it to dry; C, spraying the washing liquid And start the wiper; D, the image acquisition device in the car collects the water mark state, quantity and thickness in the area of ​​the wiper wiper at the driving position and records the score; the state of the water mark is divided into constant and water mark quantity or length Two states change, and the water marks are weighted according to the importance of the field of view in the wiper area. In the above scheme, the main difference from the existing technology is that the windshield is divided into ranges, given different weights according to different areas, and the changing water marks are still included in the scoring system, making it more simulated by actual drivers. Subjective feelings.

Description

technical field [0001] The invention belongs to the field of vehicle component testing, and in particular relates to a method for detecting the cleanliness of a windshield wiper. Background technique [0002] With the development of society, the popularity and frequency of use of automobiles are getting higher and higher. Wipers are an important safety component of vehicles. Generally, two pairs of wipers are installed on the front windshield, and one pair of wipers is installed on the rear windshield. The wiper area GB has Clear legal requirements, and users' requirements for safety performance and driving vision are getting higher and higher, and the cleanliness of wipers has also begun to receive more and more attention. [0003] Chinese patent CN108791194A discloses a method and device for judging the cleanliness of a wiper. The method is to "spray the prefabricated mixture evenly on the windshield of the car; Prefabricated mixture in the area; obtain the quantity of ex...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN108791194A discloses a method and device for judging the cleanliness of a wiper. The method is to "spray the prefabricated mixture evenly on the windshield of the car; The prefabricated mixture in the area; obtain the quantity of excess residue in the cleanable area, the excess residue is the prefabricated mixture larger than the preset size left after the wiper is scrubbed back and forth once; determine whether the quantity of the excess residue is greater than the first preset threshold , and when the amount of excess residue is greater than the first preset threshold, it is determined that the scraping degree of the wiper is not up to standard

"It is essentially a judgment method for judging whether the wiper should be replaced after use. It needs to use devices such as area detectors. The equipment cost is high and the judgment process is cumbersome, and it only judges the scraping degree based on the area of ​​​​the residue. However The cleanliness of the glass is also related to the specific state of the residue, and the application does not disclose specific evaluation criteria, nor does it grade the cleanliness. It is only suitable for judging whether the wiper should be replaced, but cannot judge the performance of the wiper performance, it is still difficult to evaluate and count the cleanliness of wipers in actual operation

That is to say, this program is only applicable to the repair shop, not to the wiper performance test of the OEM

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