Windscreen wiper cleaning degree detection method

Abstract

The invention provides a method for detecting the wiping degree of a windscreen wiper. The method comprises the following steps: A, cleaning and drying a windscreen; B, spraying a mixed solution for simulating outdoor pollution on the windshield and waiting for the mixed solution to be dried; C, spraying washing liquid, and starting the windscreen wiper; D, enabling the in-vehicle image collecting device to collect the states, the number and the thickness of water marks in the windscreen wiper hanging and brushing area at the driving position, and recording and grading the states, the number and the thickness of the water marks; the water mark state is divided into two states of keeping unchanged and changing the number or length of the water marks, and the water marks are subjected to weight division in the wiping area of the windscreen wiper according to the importance of the visual field. According to the scheme, compared with the prior art, the main difference is that the range of the windshield is divided, different weights are given according to different areas, and the changed water stains are still included in the scoring system, so that the subjective feeling of actual drivers is better simulated.

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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