Vehicle body emergency control system and method at moment of vehicle tire blowout

Abstract

The invention discloses a vehicle body emergency control system and method at the moment of vehicle tire blowout. The method includes: monitoring, in real time, tire pressure, temperature, load, mileage, distance and speed change information; using blowout detection and pre-judging modules to classify and handle vehicle tire blowouts according to the real-time monitored information; if it is judged that a blowout is about to occur, using a blowout time point prediction formula to calculate a blowout time point, and activating a vehicle body stabilizing unit, a deceleration unit and a warning unit to control the vehicle body when the time point is up, to be specific, limiting turning angle of a steering wheel, providing opposite torque to stabilize the vehicle body, controlling engine idlespeed and an accelerator to decrease the speed, and warning a driver about blowout notices; if it is judged that a blowout already occurs, immediately activating the above three units to control the vehicle body. The system herein can distinguish the blowout types, predict the blowout time point, save emergency startup time, stabilize the vehicle body, prevent a driver from making mistaken emergency responses and provide warnings.

Description

technical field [0001] The invention relates to a vehicle safety driving system, in particular to a vehicle body emergency control system and method for a tire blowout transient state. Background technique [0002] Relevant statistical data shows, in the traffic accident of expressway, 10% is because tire failure causes, and wherein tire blowout item just accounts for more than 70% of the accident total amount that tire failure causes. A puncture refers to a tire that suddenly loses air due to rupture in a very short period of time (generally less than 0.1 second) and deflates. Once the driver makes a wrong emergency response in the transient state of vehicle tire blowout, the probability of vehicle crash and death will increase greatly. [0003] When a vehicle traveling at high speed experiences a tire blowout, the vehicle body will deviate towards the direction of the tire blowout. The emergency response of an inexperienced driver is usually to turn the steering wheel in ...

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Problems solved by technology

[0005] Related patent applications include "Control Method and Control System for Driving Direction after Vehicle Tire Burst" (Application No.: CN201510201193.1), "A Kind of Vehicle Tire Burst Hierarchical Braking Control Device and Control Method" (Publication No.: CN103587516A), "A Tire Burst Body Stability Control System" (Application No.: CN201710199904.5), in which the safety devices only unilaterally control the tire speed or limit the steering wheel to deal with the loss of control of the car, and cannot solve the problem of body deviation caused by the yaw torque generated by the car body

The patent "An Anti-Blowout Anti-Tire Warning Device Based on Conductive Film and Its Control Method" (CN201710299332.8) involves conductive film technology to predict tire blowouts, but there is no obvious distinction between the predictable and unpredictable characteristics of tire blowouts. Thereby increasing the serious consequences induced by inaccurate tire blowout prediction

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