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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

Active Publication Date: 2017-09-29
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is a big safety hazard in the electric window

Method used

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

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] A four-door window anti-pinch algorithm based on dual Hall sensors and DC motor current detection, including the following steps:

[0027] (1) Clarify the relevant parameters of the electric window anti-pinch system, the definition of the anti-pinch area and the non-pinch area, the size of the anti-pinch force and the linear stiffness of the anti-pinch system;

[0028] Such as figure 1 It is a schematic diagram of the distribution of the window area. The anti-pinch area ranges from 4mm to 200mm from the top of the window, and the area outside the anti-pinch area is called the non-pinch area. In the non-pinch area, ...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E05F15/40
Inventor 刘建国俞力戴兴付恒姚晨程栋梁杨军饶正玉郑玉玲李明菊
Owner WUHAN UNIV OF TECH
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