Control method and system for defrosting and deicing wiper on glass surface of automobile

Abstract

The invention provides a control method and system for a car glass surface rain wiper capable of defrosting and deicing. The rain wiper is provided with a position sensor capable of detecting the position of the wiping arm of the rain wiper. The method includes a defrosting and deicing main-control phase, and the phase includes the following steps of in the running process of the rain wiper, obtaining positions detected by the position sensor to determine the change rate of the positions, therefore determining the actual rain-wiping speed of the rain wiper, and detecting the motor output dutyratio of the rain wiper; judging, if the actual rain-wiping speed is smaller than a speed threshold value while the motor output duty ratio is larger than a duty ratio threshold value, judging that asnow blocking state is activated, and if not, judging as a non-snow blocking state; when the snow blocking state is activated, conducting an automatic defrosting and deicing function, increasing the heating driving duty ratio to a preset ratio to heat, and meanwhile, increasing the injection pressure to a standard pressure value to conduct cleaning solution injection. The control method and systemcan conduct automatic snow blocking clearing and improve the car user experience.

Description

technical field [0001] The invention relates to the technical field of wiper blades for vehicles, in particular to a control method and system for defrosting and deicing wiper blades on glass surfaces of automobiles. Background technique [0002] When the car is parked outdoors in winter, when the temperature is below zero, there will be a thin layer of frost (ice) on the front windshield after a period of time, which must be cleaned before normal driving. Manual defrosting and deicing (ice) is time-consuming and laborious. If it is not cleaned and wiped directly, it will seriously affect the life of the wiper blade. [0003] If there is a particularly serious snow resistance phenomenon, the wiping torque of the wiper cannot overcome the snow resistance resistance, and the existing designs generally stop scraping after the snow resistance phenomenon occurs, or reduce the wiper range. No matter which of the above application scenarios seriously reduces the user experience. ...

AI Technical Summary

Problems solved by technology

[0004] Washing liquid can be used to melt ice and frost. If the amount of washing liquid is too fast, on the one hand, it will increase the cost burden of vehicle users. On the other hand, in order to maintain sufficient endurance, it is necessary to passively increase the capacity of the washing liquid pot and increase the weight of the vehicle

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