Electric car window controller and anti-pinch control method

Abstract

The invention provides an electric car window controller with an anti-pinch function and an anti-pinch control method. During the motion process of an electric car window, the number of fluctuations of motor current during rise is added and is subtracted during fall, and motor current is constantly detected. If motor overcurrent occurs during rise of the car window, the detected net value of the number of fluctuations of motor current is compared with the number of fluctuations of maximum current of an electric window anti-pinch area. If the detected net value is smaller than the number of fluctuations of maximum current, a user can judge that an obstacle exists in the electric window, and the controller controls the car window to fall back. The electric car window controller with the anti-pinch function and the anti-pinch control method require no Hall sensors, have low requirements for configured motors, simplify design for hardware circuits, bring convenience to installation and save cost.

Description

Technical field [0001] The invention belongs to the field of automobile electronic automatic control, and more specifically is an electric window controller with an anti-pinch function and an anti-pinch control method. Background technique [0002] At present, the common middle and low-end cars in the domestic market are equipped with electric windows (glasses). The main functions are anti-pinch and electric window control. Generally speaking, electric control mainly includes electric switch window, automatic switch window, manual switch window, pull key to turn off automatic window closing and child lock function. The anti-pinch function means that when body parts (such as hands, heads, etc.) or other objects stick out of the window and are clamped during the automatic raising of the window glass, the controller can detect the presence of danger and does not continue to rise and close the window. Instead, the windows fall back to avoid pinching and achieve protection. [0003] T...

AI Technical Summary

Problems solved by technology

[0004] Now the windows of high-end cars have relatively complete electric control functions, and most of them use Hall sensor detection to realize the anti-pinch function. Due to the increase of sensing equipment and matching corresponding motors, the cost is relatively high; while middle and low-end cars generally only have some The electric control function has no anti-pinch function. For example, when the one-button automatic window closing function is implemented, it is easy to cause a pinch accident. If the anti-pinch function needs to be added, the motor with a sensor needs to be replaced. The installation is complicated and very restrictive

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