Parking control system and parking control method based on air brake parking system

Abstract

The invention provides a parking control system and a parking control method based on an air brake parking system, and belongs to the field of vehicle control. The system comprises an air brake parking system parking mechanism which comprises a parking brake valve and a relay valve; an air pressure sensor used for detecting an air pressure signal between an air outlet of the parking brake valve and a control port of the relay valve; an air brake parking system switch used for generating a parking state signal indicating whether to enter a parking state or not; an air brake parking system electric control unit used for generating a final parking state signal according to an air pressure signal measured by the air pressure sensor and a parking state signal generated by the air brake parkingsystem switch; a vehicle control unit connected with the air brake parking system electric control unit; and a self-adaptive cruise control system connected with the vehicle control unit so as to receive the final parking state signal through the vehicle control unit and control the operation of the vehicle according to the final parking state signal. According to the parking control system, redundant design of the parking brake state signals can be achieved.

Description

technical field [0001] The invention relates to the field of vehicle control, in particular to a parking control system and a parking control method based on an air brake parking system. Background technique [0002] Adaptive cruise control (ACC) is an important part of vehicle autonomous driving. The development of ACC on light commercial vehicles with pneumatic brakes is still in its infancy at home and abroad. Improving the absolute safety of the ACC system is the goal of the unremitting efforts of intelligent driving engineers. [0003] The ACC system needs to use the parking state signal of the vehicle when it is working. When the parking state signal is 1, it means that the vehicle has entered the parking state; when the parking state signal is 0, it means that the vehicle has entered the parking release state; When the parking status signal is lost, it means that the parking brake system has failed. When the parking status signal of the ACC system is 1, the vehicle ...

AI Technical Summary

Problems solved by technology

[0005] Since the parking pressure switch is hardwired to the VCU or gauge controller, it is particularly susceptible to failure

During the high-speed cruise of the vehicle, if the parking status signal is 1 or the parking status is lost by mistake, the ACC system will immediately exit, affecting the continuity of the cruise system

If it enters the parking state but the parking state signal is 0, the vehicle is accelerating while braking, and a very dangerous state occurs

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