Control method of safety diagnosis module in rear collision of vehicle

Abstract

The invention relates to a control method of a safety diagnosis module in a rear collision of a vehicle, and includes the steps of: a) measuring and calculating a speed difference before and after the collision of the vehicle and collision acceleration in the collision; b) if the speed difference is greater than or equal to a first speed difference threshold value, entering Step c), and otherwise entering Step f); c) exploding a high-voltage power-off device; d) if the collision acceleration is judged to be greater than a first acceleration threshold value, entering Step e), and if the collision acceleration is smaller than a second acceleration threshold value, finishing the method; f) if the collision acceleration is judged to be greater than a third acceleration threshold value, entering Step g), and if the collision acceleration is smaller than a fourth acceleration threshold value, finishing the method; and g) exploding the high-voltage power-off device. The control method of the safety diagnosis module in the rear collision of the vehicle effectively protects passengers from injury caused by the rear collision of the vehicle, and remarkably reduces risks of wrong actions of various safety configurations in the collision.

Description

Technical field [0001] The invention relates to the technical field of automobile safety protection, and more specifically, to a control method of a safety diagnosis module in a rear collision of an automobile. Background technique [0002] With the rapid increase in the number of cars, the casualties caused by car collisions have become a serious social problem of widespread concern in the world, and car safety has also become an important issue for the automotive industry. In order to reduce the risk of injury to the occupants and people outside the car in a collision accident, various auto manufacturers continue to develop collision safety technologies and increase the number of safety devices such as airbags. However, because the collision accident process is very short, each safety configuration must be in place within tens of milliseconds. Therefore, many safety configurations are promoted by explosive explosion. If the timing of the explosion is not appropriate, it will no...

AI Technical Summary

Problems solved by technology

[0006] The automobile safety protection introduced in the prior art mainly focuses on calibrating the working timing of various safety configurations in experiments with frontal collision and side collision conditions, and then controls the actions of various safety configurations when a collision occurs. These safety configurations Although it can reduce the risk of occupant injury in a rear collision accident to a certain extent, these technologies seldom focus on or even ignore the safety protection of the occupant in the rear collision of the car, but pay more attention to the fuel leakage after the collision, so Failure to meet rising automotive safety needs

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