Wiper control system and control method thereof

Abstract

The invention provides a wiper control system which can control wiper arms to return accurately and reliably and a control method thereof. The wiper control system comprises a controller and a wiper motor, wherein the controller comprises a timing unit, the controller is connected with a mode selection switch and a reset switch, a first output end of the controller controls a mode relay, a second output end controls a power supply relay, a moving contact of the mode relay is connected with the moving contact of the power supply relay, two static contacts of the mode relay are respectively connected with a low-speed switch and a high-speed switch of the wiper motor, two static contacts of the power supply relay are respectively connected with a power supply and the ground, and the wiper motor is further grounded through a ground pin of the wiper motor. The controller comprises the timing unit and can determine the time delay of a wiper through theoretical calculation and vehicle parameter matching, carry out timing according to the time delay, disconnect the power supply relay at the appropriate time and brake the back-eletromotive force of the wiper motor, thereby returning the wiper arms accurately and reliably.

Description

Technical field [0001] The invention belongs to the technical field of automobile electronics, and particularly relates to a wiper system of an automobile. Background technique [0002] In rain and snow, in order to provide the driver with a clear vision and ensure driving safety, a wiper system is installed on the front windshield glass of the car, so that the rain and snow on the front windshield glass can be removed in time. The wiper system is usually composed of a wiper motor, a wiper arm and a wiper blade. The wiper motor is driven by the electric energy of the battery to drive the wiper arm and blade to move, thereby removing the rain and snow on the front windshield glass. While the wiper system satisfies the basic function of clearing the rain and snow on the front windshield glass, it must also ensure that the wiper arm can return to the starting position accurately and reliably. The patent application number 200620034534 discloses an electronically controlled reset wi...

AI Technical Summary

Problems solved by technology

The disadvantage of this type of wiper is that the structure is relatively complicated, and it is easily affected by the driving conditions of the car and the speed of the wiper, so the wiper arm cannot be returned accurately.

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