Control circuit for driving folding of automobile wing mirror base

Abstract

The invention provides a control circuit for driving the folding of an automobile wing mirror base. The control circuit can satisfy the functions of outward extension and inward folding of the automobile wing mirror base through the design of a voltage polarity conversion circuit; at the same time, a first overcurrent protection circuit and a second overcurrent protection circuit are separately connected to a logic arithmetic unit which realizes the function of OR operation, and the logic arithmetic unit is connected to a reset end of a self-holding circuit and can play a role of overcurrent protection in the control circuit; and the self-holding circuit of the control circuit is separately connected to a first power transistor and a second power transistor through driving circuits so as to realize the circuit connection of a motor and intelligently drive the motor. Through the structure, the invention provides the control circuit, which is simple in structure and low in cost, for driving the folding of the automobile wing mirror base.

Description

technical field [0001] The invention belongs to the technical field of control circuits, and in particular relates to a control circuit for driving the folding of an automobile rearview mirror base. Background technique [0002] In the past two decades, researchers in more and more fields have begun to study the appearance and function of car rearview mirrors, and their prototype products have been developed one after another. The quality and function of the car rearview mirror is related to the side, back and bottom of the car in the direction of driving, and the information about the people, things and things beside the car needs to be conveyed to the driver at any time by the car rearview mirror. , so it is closely related to the driving safety of car drivers. Car rearview mirrors with good performance usually provide drivers with a wider and longer visual distance, reducing the possibility of drivers having traffic accidents. With the development of global automotive e...

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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