Car window anti-pinch detecting system and detecting method

Abstract

The invention provides a car window anti-pinch detecting system which is used for preventing a car window clamping obstacles. The car window anti-pinch detecting system includes a detecting module anda car body controlling module, wherein the detecting modules detects external trigger instructions and transmitting; and the car body controlling module receives the external trigger instructions soas to form control instructions and drive a motor to lift the position of the car window. The car window anti-pinch detecting system further includes a current sampling module and a signal processingmodule, wherein the current sampling module is connected with the motor and samples the current of the motor; and the signal processing module receives a sampling current signal formed by the currentsampling module, wavelet transforming is conducted on the sampling current signal so as to form n-layer coefficients, and a coefficient threshold is set in the signal processing module; when the amplitude of n-layer coefficients is within the range of the coefficient threshold, the signal processing module sends alarm instructions to the car body controlling module, the car body controlling moduledrives the motor to lower down the car window position according to the alarm instructions. The invention further provides a car window anti-pinch detecting method. After adopting the above technicalscheme, a high-cost Hall sensor can be omitted, and misjudging can be avoided while the trigger precision is ensured.

Description

technical field [0001] The invention relates to vehicle control, in particular to a vehicle window anti-pinch detection system and detection method. Background technique [0002] With the continuous development of science and technology and the continuous improvement of people's material living standards, automobiles, a high-end scientific integration, have also entered thousands of households, which facilitates people's daily life and reduces the difficulty of people's travel, but it also brings A lot of security issues come up. For example, electric windows are more and more widely used in the field of modern automobiles. Although it is different from the traditional way of shaking the handle to make the windows rise or fall, the application of electric windows reduces the labor intensity of drivers and passengers and improves driving and safety. Riding comfort; however, due to the fast rising speed of the electric window, it is easy to cause problems such as passengers b...

AI Technical Summary

Problems solved by technology

[0004] 1) The number of full-scale counts, that is to say, the subdivision of the entire movement process of the car window, and the accuracy of judging the position of the car window. The more counts, the more accurate the measurement. Correspondingly, the fewer the counts, the more accurate The degree will be worse;

[0005] 2) The pulse width change accuracy of the Hall sensor is the measurement of the obstruction force of obstacles. The higher the change accuracy, the easier the window anti-pinch function will be triggered, which has always brought many misjudgments, such as body bumps and poor road conditions. and other environments

If the accuracy of the change is lower, it will be more difficult to trigger the function, which may cause immeasurable consequences

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