A control circuit for driving car rearview mirror base to fold

Abstract

The invention provides a control circuit for driving the folding of the base of the rearview mirror of an automobile. The designed voltage polarity switching circuit can satisfy the functions of the base of the exterior rearview mirror of the automobile to stretch outwards and fold inwards; at the same time, through the first The over-current protection circuit and the second over-current protection circuit are respectively connected to the logic operator, which realizes the OR operation function, and the logic operator is connected to the reset terminal of the self-holding circuit, which can provide over-current protection for the control circuit The self-holding circuit of the present invention connects the first power transistor and the second power transistor respectively through the drive circuit to realize the conduction of the motor circuit and intelligently drive the motor; the present invention provides a simple structure and low cost through the above structure. The lower drives the control circuit for folding the base of the rearview mirror of the car.

Description

Technical field [0001] The present invention belongs to the field of control circuitry, and more particularly to a control circuit that drives the automotive rear view mirror base folding. Background technique [0002] In the past two decades, researchers in more and more areas have begun to study the appearance and function of the vehicle rearview mirror, and its prototype products have been developed. The quality and function of the vehicle rearview mirror is related to the side of the car driving direction, the back and bottom of the person, things, things such as people, things, things, etc., this information requires rendering of the car to drive the car driver. Therefore, it is closely related to the driving safety of the car driver. Good performance vehicles typically provide a broader and far visual distance of drivers to reduce the possible chance of traffic accidents in the driver. With the development of global automotive electronics, the performance and appearance of ...

AI Technical Summary

Problems solved by technology

The traditional rearview mirror system for electric vehicles can provide the driver with the function of adjusting the deflection angle of the mirror according to his personal height and preferences, and has been widely installed on medium and low-priced vehicles; in recent years, more foreign cars The design of the manufacturer not only provides the control system for the driver to adjust the two-axis deflection angle of the vehicle rearview mirror, but also adds the function of memory and recovery of the two-axis deflection angle to the vehicle rearview mirror control system. The unit price has always been high, so up to now, it is only limited to be equipped on higher-level or higher-unit-priced vehicles.

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