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Method and system for judging position of automobile power window

A technology for electric windows and window positions, which is applied to door/window accessories, power control mechanisms, buildings, etc., and can solve problems such as inaccurate methods for calculating the position of windows

Active Publication Date: 2017-03-15
SAIC GENERAL MOTORS +1
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  • Description
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Problems solved by technology

[0003] Based on this, it is necessary to provide a method and system for judging the position of a car electric window in order to solve the technical problem that the existing method of calculating the position of the window through the ripple current is not accurate enough

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  • Method and system for judging position of automobile power window
  • Method and system for judging position of automobile power window
  • Method and system for judging position of automobile power window

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] figure 1 It is a work flow diagram of a method for judging the position of an electric vehicle window of an automobile according to the present invention, including:

[0024] Step S101, including: start real-time sampling of the ripple current of the motor controlling the window, after at least two sampling periods, acquire continuous first ripple current sampling value, second ripple current sampling value and value and a third ripple current sampling value, wherein the sampling time of the first ripple current sampling value is newer than the sampling time of the second ripple current sampling value, and the sampling time of the second ripple current sampling value newer than the sampling time of the third ripple current sampling value;

[0025] Step S102, comprising: in each sampling period, according to the comparison of ...

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Abstract

The invention discloses a method and system for judging the position of an automobile power window. The method comprises the steps that real-time sampling is started for the ripple current of a motor for controlling the window, and after at least two sampling periods are carried out, the continuous first ripple current sampling value, second ripple current sampling value and third ripple current sampling value are acquired in each sampling period; in each sampling period, according to comparison of the first ripple current sampling value, the second ripple current sampling value and the third ripple current sampling value, it is determined that the ripple current in the current sampling period is located on the wave trough or the wave crest or the non-wave-trough portion or the non-wave-crest portion, and the total wave crest number and the total wave trough number of the current sampling period are recorded after real-time sampling is started; and the position of the window is calculated according to the total wave crest number and the total wave trough number. According to the method and system, the features of the ripple current are extracted, the features of the wave crest and the wave trough of the ripple current are subjected to modeling decomposition and extraction, and therefore precise current ripple counting is obtained, and the position of the power window can be calculated accurately.

Description

technical field [0001] The invention relates to the technical field related to automobiles, in particular to a method and system for judging the positions of electric windows of automobiles. Background technique [0002] Due to the potential safety hazards of electric windows, especially after many accidents were reported, the anti-pinch protection of electric windows was proposed. Based on safety considerations, the car technical standards of many countries have made some relevant regulations on anti-pinch protection. Vehicles equipped with one-button automatic window lift function of electric windows must be equipped with anti-pinch protection devices. The so-called anti-pinch protection of electric windows means that once an obstacle is detected during the automatic upward movement of the window, the window will automatically stop moving upward to prevent damage to the obstacle; and move downward to release the obstacle. Although some anti-pinch methods have been propose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E05F15/40E05F15/689
CPCE05F15/40E05F15/689E05Y2900/55
Inventor 王道成敬辉
Owner SAIC GENERAL MOTORS
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