Multifunctional mutual inductance type power window anti-pinch controller and control method

An electric vehicle and mutual induction technology, which is applied in door/window accessories, power control mechanisms, buildings, etc., can solve the problems of injuries to passengers and children, achieve the effect of preventing being pinched and realizing the anti-pinching function of windows

Pending Publication Date: 2020-08-11
FUJIAN XIAPU JINGHE MECHANICAL & ELECTRICAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially the anti-pinch function, it is more likely to cause damage to passengers, especially children

Method used

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  • Multifunctional mutual inductance type power window anti-pinch controller and control method
  • Multifunctional mutual inductance type power window anti-pinch controller and control method
  • Multifunctional mutual inductance type power window anti-pinch controller and control method

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Experimental program
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Effect test

Embodiment 1

[0054] Please refer to Figure 1 to Figure 8 , Embodiment 1 of the present invention is:

[0055] A multi-functional mutual induction electric window anti-pinch controller, including a control circuit, a voltage stabilizing circuit and an armature BEM signal transformer T1, wherein the control circuit includes a main control chip U1, an operational amplifier U2, and a Schmitt trigger U5 And the driver chip U4, the armature BEM signal transformer T1 includes a primary winding and a secondary winding; the voltage stabilizing circuit includes a three-terminal power supply voltage stabilizing chip U3, a diode D1, a capacitor C7 and a capacitor C8.

[0056] Such as figure 1 As shown, one end of the primary winding and one end of the secondary winding are grounded at the same time, the other end of the primary winding is connected to the third pin and the seventh pin of the relay K1 to access the BEM ripple signal, and the other end of the secondary winding is connected to The six...

Embodiment 2

[0066] Please refer to Figure 1 to Figure 8 , the second embodiment of the present invention is:

[0067] The anti-pinch control method of a mutual induction electric vehicle window comprises the steps of:

[0068] S1, collecting the BEM ripple signal of the window motor M;

[0069] In this embodiment, the armature BEM signal transformer T1 collects the BEM ripple signal in step S1 , and the following step S2 is processed by the main control chip U1 .

[0070] S2. Determine whether the pulse width deformation of the BEM ripple signal is greater than a preset threshold, and if so, generate an anti-pinch control signal to control the operation of the window motor M.

[0071] In this embodiment, step S2 specifically includes the following steps:

[0072] Read the current position of the window and the key input signal. If the key input signal is the window lift signal, then output the switch signal to drive the window motor M to move up and down. If the window lift signal is ...

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Abstract

The invention discloses a multifunctional mutual inductance type power window anti-pinch controller and a control method, wherein the multifunctional mutual inductance type power window anti-pinch controller comprises a control circuit and an armature BEM signal transformer T1; the control circuit comprises a main control chip U1; the armature BEM signal transformer T1 comprises a primary windingand a secondary winding; one end of the primary winding and one end of the secondary winding are grounded at the same time; the other end of the primary winding is used to be connected with a BEM ripple signal; and the other end of the secondary winding is electrically connected with one end of the main control chip U1. The multifunctional mutual inductance type power window anti-pinch controllerdisclosed by the invention uses the armature BEM signal transformer T1 to sample the BEM ripple signal when a window motor M is rotating; the main control chip U1 is used to monitor the pulse width change condition of the BEM signal of the motor, thereby accurately determining whether the power window is pinching an object or not during a rising process, and controlling the window motor M in timewhen meeting an obstacle so to prevent an object or a human body from being pinched, thereby realizing the anti-pinch function of the power window.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a multifunctional mutual induction electric window anti-pinch controller and a control method. Background technique [0002] With the advancement of modern automotive electronics technology, the traditional parts and assemblies in the car are also developing towards mechatronics. Among them, a large number of electronic devices are used in cars, which is conducive to improving the comfort and convenience of cars, but some electronic devices have certain safety risks during use, and as people have higher and higher safety requirements, How to improve the safety performance of electronic equipment in the car while ensuring the comfort and simplicity of the car has become a trend in the current car development. [0003] In the existing technology, for the convenience of drivers and passengers, a large number of cars use electric windows, but many electric windows do not have ...

Claims

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Application Information

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IPC IPC(8): E05F15/40E05F15/695E05F15/79
CPCE05F15/40E05F15/695E05F15/79E05Y2900/55
Inventor 张李桂吴初莹
Owner FUJIAN XIAPU JINGHE MECHANICAL & ELECTRICAL CO LTD
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