Window anti-pinch system and method

Abstract

The invention provides a window anti-pinch system and method, and relates to the technical field of window anti-pinch. The window anti-pinch system comprises a Hall sensor, a controller, a first control module and a second control module, wherein the Hall sensor is used for generating a Hall pulse signal in the moving process of a window driving motor; the controller comprises a data receiving module used for receiving the Hall pulse signal in real time after receiving an external window closing instruction; the first control module is used for processing according to the Hall pulse signal toobtain the real-time position of the window glass and generating an anti-pinch control signal when the real-time position is in a preset anti-pinch area; and the second control module is used for acquiring a real-time Hall period of the Hall pulse signal according to the anti-pinch control signal, and generating a corresponding anti-pinch control instruction when the real-time Hall period is greater than an anti-pinch period threshold value obtained through adaptive updating, so that the window glass is controlled to stop closing through the window driving motor, and the window anti-pinch function is realized. The window anti-pinch system has the beneficial effects that the window anti-pinch system can adapt to different environment changes and aging of parts, and the reliability of the anti-pinch function is effectively improved.

Description

technical field [0001] The invention relates to the field of anti-pinch technology of vehicle windows, in particular to a system and method for anti-pinch of vehicle windows. Background technique [0002] Cars have gradually been popularized, and people have higher requirements for safety and comfort, and the safety protection of personnel accidents occupies an important position, the most important of which is to prevent children from having accidents. The closing safety and anti-pinch function design of automobile windows have also gradually become one of the main requirements when people buy vehicles. The purpose of the design of the anti-pinch function of the car window is to effectively reduce the accidental injury rate of the hand or other parts of the body close to the window when the passenger closes the window inadvertently. The safety requirements for the effective control of accidental pinch accidents through the body structure of automobiles. [0003] The so-ca...

AI Technical Summary

Problems solved by technology

[0004] When the glass is closed and enters the anti-pinch area, once it is clamped against an obstacle, a counter electromotive force will be generated in the circuit, resulting in a sudden increase in current. This feature can be used to compare the measured current with the preset threshold to achieve the anti-pinch function. Practice has proved that this This scheme is feasible, but the disadvantage is that the sampling resistor and the corresponding power amplifier circuit need to be added in the circuit, which increases the cost

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