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Power vehicle window controller

A technology for electric windows and controllers, applied in electrical program control, starter components, program control in sequence/logic controllers, etc., can solve the problem of inability to adapt to the high voltage of the 24V power supply system, and save product costs. , The effect is obvious, the effect of avoiding contact bonding

Inactive Publication Date: 2010-04-07
SHANGHAI HUGONG AUTO ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem that the relay in the electric window controller cannot adapt to the high voltage and high current impact of the 24V power supply system, the present invention develops an electric window controller using MOS tubes

Method used

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Examples

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Embodiment Construction

[0011] Such as figure 2 As shown, when the button is operated to raise the window, the microprocessor MCU control terminal: I / O1 outputs an electrical signal, and the transistor T1 is turned on through the resistor R1, and the contact K1 of the driving relay is pulled in, and the regulator DW1 is protected. The triode T1 works. At this time, because the MOS tube is not turned on, the motor does not start without forming a loop. After a delay of 20MS (after the relay J1 is turned on), MCL and the control terminal I / O3 output an electrical signal, and the MOS tube is turned on through the resistor R4. At this time, the positive pole of the power supply V pulls the contact K1 through the relay J1, the motor M, the normally closed contact K2 of the relay J2, the MOS tube, the sampling resistor RW, and the negative pole of the power supply V form a loop, so that the motor rotates forward and the window rises. If the car window is required to stop rising or the motor is blocked (t...

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PUM

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Abstract

The invention provides a power vehicle window controller applying an MOS tube. The MOS tube is connected in serial with an output circuit of a controller circuit; a grid G thereof is connected with a control terminal of a microprocessor; a drain D thereof is connected with normally closed contacts of two normally open relays; and a source S thereof is connected with a sampling resistor and the control terminal of the microprocessor. When the power vehicle window controller circuit is turned on or turned off, a vehicle window motor can generate a startup heavy current peak value or a back-EMF which impacts relay contacts during the actuation, causes the phenomena of burning or bonding the contacts, and leads to the failure of the operation. The power vehicle window controller utilizes a microprocessor control circuit to switch on the MOS tube after the relay contacts are actuated; and the MOS tube has a rapid switching speed and can entirely bear high-power impact generated by the motor so that the power vehicle window controller can be widely applied to various large-scale vehicles with automotive electrical appliance adopting a 24V power supply.

Description

technical field [0001] The invention relates to automobile electric appliances, in particular to an electric window controller. Background technique [0002] Electric windows have become a necessary equipment for cars. With the rapid development of modern cars, people put forward higher requirements for the comfort of driving cars. Electric windows are also applied to light trucks and heavy trucks. However, the electrical appliances equipped with light trucks and heavy trucks generally use 24V power supply, which is different from the 12V power supply used by the electrical appliances assembled in cars. figure 1 Shown is the control circuit of the existing car window controller. It can be seen from the figure that the car window controller uses the contacts K1 and K2 of two normally open relays J1 and J2 to switch, and the output power of the control circuit is used to drive the window motor. Turn or reverse, thereby driving the window glass to open or close. According to ...

Claims

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Application Information

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IPC IPC(8): G05B19/04H02P1/04
Inventor 周坚勇刘惠民秦峰
Owner SHANGHAI HUGONG AUTO ELECTRIC
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