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Car window position detection circuit

A technology for detecting the position of circuits and car windows, applied in power supply, door/window accessories, buildings, etc., can solve the problems of external sensors, etc., and achieve the effects of improving detection accuracy, saving circuit costs, and improving reliability

Pending Publication Date: 2018-08-28
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Abstract
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Problems solved by technology

[0004] The object of the present invention is to provide a vehicle window position detection circuit to solve the problem that the existing vehicle window position detection requires an external sensor

Method used

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  • Car window position detection circuit
  • Car window position detection circuit
  • Car window position detection circuit

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Embodiment Construction

[0041] The window position detection circuit proposed by the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0042] The core idea of ​​the present invention is to provide a vehicle window position detection circuit without an external sensor.

[0043] In order to realize the above idea, the present invention provides a vehicle window position detection circuit, the vehicle window position detection circuit includes a motor control circuit, a first detection circuit, a second detection circuit and a controller, wherein: the motor control circuit includes a motor, the moto...

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Abstract

The invention provides a car window position detection circuit. The car window position detection circuit comprises a motor control circuit, a first detection circuit, a second detection circuit and acontroller, wherein the motor control circuit comprises a motor; the motor drives a car window to move; motor current output by the motor during rotating has ripples; the first detection circuit andthe second detection circuit are used for sampling the motor current and outputting a voltage signal to the controller; and the controller analyzes the voltage signal to obtain the number of the ripples so as to determine the position of the car window. The rotating track and distance of the motor can be judged according to the motor current detection signal through detection of the first detection circuit and the second detection circuit on the motor current fluctuation. The detection of the car window is achieved without an external sensor. The circuit cost is saved. The detection precisionand detection reliability are improved.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to a vehicle window position detection circuit. Background technique [0002] The current automatic lift windows on the market are mainly detected by external sensors, mainly Hall sensors. According to the Hall effect, the Hall sensor generates an electrical signal through the relative displacement between the magnetic fields, and detects the electrical signal to obtain the magnitude of the displacement to detect the position of the window, but the Hall sensor requires an additional power supply to use, and is anti-interference Weak. In recent years, in order to reduce hardware costs, more and more technicians are researching the anti-trapping scheme of sensorless windows. [0003] Therefore, it is necessary to design a window position detection circuit that does not require an external sensor. Contents of the invention [0004] The object of the present invention is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E05F15/695
CPCE05F15/695E05Y2400/334
Inventor 王亮亮申远郑仕杰邹素瑞高欣
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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