KR970020775A - Wiper purge control - Google Patents

Abstract

The present invention relates to a wiper purge control device for automatically operating the wiper at an appropriate speed by determining the amount of rainfall during driving of the vehicle in the rain.

The apparatus includes a selection switch for the user to manually select or cancel the purge control; Sensor means for detecting whether the rainfall and the amount of rainfall; A motor controller for controlling the wiper drive motor at a variable speed; And a computer (ECU) further provided with an algorithm for sending a variable speed output corresponding to the input condition of the sensor means to the motor controller to change the wiper operating speed according to the rainfall condition. At this time, the sensor means uses an optical sensor for detecting rainfall when the rainfall is small and a flow sensor for detecting the amount of rainfall when the rainfall is heavy, and the motor is a variable duty ratio corresponding to the input condition from the constant oscillation frequency of the ECU It generates output and operates at variable speed, and one-touch operation of purge mode selection determines the rain state and automatically controls the wiper operation speed accordingly, thereby ensuring fast and proper clock in any rain state to ensure the safety of the vehicle. There is an effect to enable the operation.

Description

Wiper purge control

Since this is an open matter, no full text was included.

1 is a front view of a vehicle showing the wiper mechanism and the sensor means,

2 is an enlarged view of the sensor means of FIG. 1, (a) is an X-X cross-sectional view, (b) is a Y-Y cross-sectional view,

3 is an input / output wiring diagram of a computer ECU further comprising an algorithm for carrying out the present invention;

4 is a graph showing the amount of signal generated by the sensor means of FIG.

5 is an example of the wiper motor drive output, (A) is an output diagram of the intermittent operation mode, (B) is an output diagram of the shift operation mode,

6 is an operational flow diagram showing an example of performing the algorithm of FIG.

Claims (3)

An apparatus for fuzzy control of a vehicle wiper, comprising: a selection switch for manually selecting or canceling a fuzzy control by a user; Sensor means for detecting whether the rainfall and the amount of rainfall; A motor controller for controlling the wiper drive motor at a variable speed; And a computer (ECU) further comprising an algorithm for changing the wiper operation speed according to the rainfall state by sending a variable speed output corresponding to the input condition of the sensor means to the motor controller. The apparatus of claim 1, wherein the sensor unit comprises: an optical sensor configured to generate a signal by detecting rainfall when rainfall is small; And a flow rate sensor for generating an analog signal proportional to the amount of rainfall in case of heavy rainfall. The wiper purge control apparatus for a vehicle according to claim 1, wherein the variable speed of the motor generates and executes an output of a variable duty ratio corresponding to an input condition from a constant oscillation frequency of the ECU. ※ Note: The disclosure is based on the initial application.