Protection method and system for small offset collision of vehicle

Abstract

The invention provides a protection method and system for small offset collision of a vehicle, and belongs to the technical field of automobiles. The problem that in the prior art, small offset collision cannot be avoided, and a driver and passengers are still greatly hurt is solved. The vehicle small offset collision avoidance method comprises the steps that when an unavoidable collision risk exists between a vehicle and a non-life obstacle in front of the same lane, whether safe driving areas exist on the left side and the right side of the vehicle or not is judged; if the safe driving area exists, the vehicle performs emergency steering according to the planned lane changing path; if the safe driving area does not exist, when it is judged that small offset collision exists between the vehicle and a non-life obstacle in front of the vehicle and a longitudinal beam of the vehicle is located in the collision area, the vehicle executes steering action according to the adjusted driving path so that the collision area of the vehicle can be increased or the collision area of the vehicle can be far away from the longitudinal beam of the vehicle; meanwhile, the vehicle is controlled to conduct emergency braking. The invention can reduce the injury to passengers.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and relates to a protection method and system for small offset collisions of vehicles. Background technique [0002] With the development of the economy, automobiles have entered thousands of households as a means of transportation. While bringing convenience to people's travel, automobile safety has also become the focus of attention. In the current actual traffic accident or test process, the collision protection is mainly protected by the airbag, and its protection algorithm is mainly calculated based on the mechanical acceleration signal when the car collides, through the calculation of the acceleration integral, time domain and frequency domain and ignition threshold For comparison, if the ignition condition is met, a large current will be generated to ignite the airbag. However, in the event of a high-speed small offset collision, the small offset collision has a large amount of damage...

AI Technical Summary

Problems solved by technology

However, in the event of a high-speed small offset collision, the small offset collision has a large amount of damage to the longitudinal beams, tires, and A-pillars of the car, which severely squeezes the passenger compartment and causes fatal injuries to the occupants. The damage value of the driver cannot be effectively reduced. In addition, the small offset collision is quite different from the traditional 100% frontal collision and 40% offset collision: 1. The amount of overlap becomes smaller

This makes it difficult for the traditional design of the front anti-collision beam for energy absorption to participate in the function

2. Rigid barrier

Although this invention can make the vehicle deviate from the obstacle in the lateral direction by braking the wheels on the non-collision side without significantly increasing the design of the front end structure of the vehicle body, the collision of the main structure of the passenger compartment can be reduced or completely avoided. Open obstacles to improve safety in small offset collision conditions, but this invention cannot avoid small offset collisions, and will still cause greater damage to drivers and passengers when such collisions occur

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