Anti-trap system and method for vehicle window

Abstract

The present invention provides a vehicle window anti-pinch system and method, which relate to the field of vehicle window anti-pinch technology, comprising: a Hall sensor, used to generate a Hall pulse signal during the movement of the window drive motor; a controller, comprising: data The receiving module is used to receive the Hall pulse signal in real time after receiving the external window closing command; the first control module is used to obtain the real-time position of the window glass according to the Hall pulse signal processing, and the real-time position is at a predetermined position. Generate an anti-pinch control signal when in the fortified clip area; the second control module is used to obtain the real-time Hall cycle of the Hall pulse signal according to the anti-pinch control signal, and when the real-time Hall cycle is greater than the anti-pinch cycle obtained by adaptive update When the threshold is reached, a corresponding anti-pinch control command is generated to control the window glass to stop closing through the window drive motor, so as to realize the anti-pinch function of the window. The beneficial effect is that it can adapt to different environmental changes and component aging, and effectively improve the reliability of the anti-pinch function.

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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