An anti-pinch method for four-door windows based on dual Hall sensors and DC motors

A dual Hall sensor, Hall sensor technology, applied in door/window accessories, power control mechanism, wing fan control mechanism, etc., can solve problems such as hidden safety hazards of windows, improve efficiency, reduce costs, and reliability. and the effect of improved robustness
CN105201319BActive Publication Date: 2017-09-29WUHAN UNIV OF TECH +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Publication Date
2017-09-29

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Abstract

The invention discloses a four-door car window anti-pinch method based on double Hall sensors and a DC motor. The method includes the following steps: setting the relevant parameters of the electric window anti-pinch system, including the anti-pinch area and the size of the anti-pinch force And the linear stiffness of the anti-pinch system; use the sampling resistor to detect the motor current, calibrate the background force of the electric window, and determine the integral threshold when the glass rises and encounters obstacles; the controller is installed on each door to control the window glass The Hall sensor in the lifting motor detects the number of pulses to obtain the position information of the window glass; the controller detects the pulse width through the second Hall sensor installed in the motor to obtain the force information of the window glass; The detection information of the Hall sensor and the DC motor current determines whether the window glass encounters an obstacle, and implements anti-pinch operation.
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Description

technical field

[0001] The invention relates to the technical field of automobile safety, in particular to an anti-pinch method for four-door vehicle windows based on double Hall sensors and a DC motor. Background technique

[0002] With the rapid development of the automobile industry, the popularity of cars is getting higher and higher. The lifting method of the door and window glass of modern cars has basically abandoned the manual lifting method of the crank type, and generally adopts the electric lifting method of the button type. But there is bigger potential safety hazard in the car window of electric lifting mode. So far, a number of accidents in which passengers have been pinched by rising windows have been reported, and most of the injured are children. Therefore, in order to meet the growing demand for driving safety and comfort, electric window lifters have almost become a must for cars now. The basic configuration, the electric anti-pinch window regulator orig...

Claims

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