Seat safety device with rear-end collision protection function and control method thereof

Abstract

The invention discloses a seat safety device with a rear-end collision protection function, comprising an automobile seat and a safety air bag with an air bag control device, wherein the automobile seat comprises a seat cushion support, a backrest support, a recliner and a lock releasing device; the backrest support is connected with the seat cushion support through a rotary shaft; the recliner is used for adjusting the angle of the backrest support; the lock releasing device is used for removing the restriction of the recliner on the angle of the backrest support; a sensor is arranged and used for measuring the distance from a barrier in the front and the approaching speed; a control unit makes collision judgment according to an output signal of the sensor; and when the distance from the barrier and the approaching speed reach a threshold value respectively and the collision is judged to be inevitable, a backrest lock releasing signal is sent to the lock releasing device and an air bag start-up signal is sent to the air bag control device. With the adoption of the seat safety device with the rear-end collision protection function and a control method thereof, whether the automobile rear-end collision can be prevented or not can be automatically judged; and if the automobile collision is judged to be inevitable, a driver is protected through the lock releasing device and the air bag control device, so that the injury or death caused by the condition that a steering wheel suppresses the driver in a jacking way after the collision is prevented.

Description

technical field [0001] The invention relates to a seat safety device, in particular to a seat safety device with a rear-end collision protection function and a control method thereof. Background technique [0002] In recent years, the death rate of traffic accidents in my country has shown a downward trend, but rear-end collision accidents have become the main "killer" in traffic accidents. In car rear-end collision accidents, the absolute ratio of casualties caused by small car rear-end collisions with large trucks is the highest. The traffic police department once conducted a sample survey of this type of accidents, and the results of the investigation were shocking. Casualties are almost a must for every car. After investigation, it was found that the cause of death in most rear-end collision accidents was that the small car directly penetrated into the rear of the large truck, causing the safety protection system of the small car to completely lose its protective functi...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a seat safety device with a rear-end collision protection function that is simple in structure and realizes the release of the backrest support when it is judged that the rear-end collision of the vehicle ahead cannot be avoided.

Images