Electric-controlled unit for vehicle electric halt vehicle brake system

Abstract

The invention discloses an electric control unit of a vehicle electronic parking brake system, which comprises a microcontroller, a power supply conversion module, a reset circuit module, a clock circuit module, an input channel module and a brake motor driving module. The microcontroller receives a single which is transmitted from the input channel module, a control signal is generated after a certain control strategy calculation and sent to the brake motor driving module which simultaneously provides the current feedback to the microcontroller when in control of positive and reverse rotation of a motor, thereby forming a closed loop control system. The system replaces a conventional mechanical lever and a tire steel cable, thereby improving the comfort and the convenience of the driving and the manipulation, and leaving more spaces for installing decorative parts and convenient facilities; meanwhile, if a service braking system is failed, the electric control unit can still play the function of emergent brake, thereby providing an automobile safety guarantee.

Description

technical field [0001] The invention relates to a vehicle electronic parking brake system, in particular to an electronic control unit of the vehicle electronic parking brake system. Background technique [0002] At present, most vehicles use a manpower-mechanical parking brake system, commonly known as "hand brake". [0003] The handbrake is purely mechanical, and long-term use will reduce its effectiveness. The professional name of the handbrake is the auxiliary brake, which is different from the principle of the brake. It uses a steel wire to connect to the rear brake shoe to brake the car. Long-term use of the handbrake will cause plastic deformation of the steel wire. Since this deformation is irreversible, long-term use will reduce the effectiveness and increase the stroke of the handbrake. There is also a return spring used in conjunction with the handbrake. When the handbrake is pulled up, the spring is stretched; when the handbrake is released, the spring returns...

AI Technical Summary

Problems solved by technology

When any part is used for a long time and frequently, its effectiveness will decrease

Especially when parking on a slope for a long time, if the steel wire is loosened or broken, the car is prone to slipping, which is very dangerous

[0004] At the same time, the current "handbrake" braking system immediately releases the brakes when driving on a hill. For non-professional drivers whose driving skills are not very high, it is difficult to operate on a hill. Drivers don't like parking on slopes, which brings a lot of inconvenience to drivers, and even causes accidents in severe cases.

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