Knee airbag explosion system and method

Abstract

The embodiment of the invention discloses a knee airbag explosion system and method. The explosion system comprises a seat occupying sensor, a distance sensor, an air bag controller and a knee safety air bag, wherein the seat occupying sensor, the distance sensor and the knee safety air bag are all electrically connected with the air bag controller, and the seat occupying sensor is installed in a seat cushion of the front row of the vehicle and used for obtaining seat taking information of the front row of the vehicle; the distance sensor is installed on the surface of an instrument panel close to the legs of a passenger in the front row of the vehicle and used for collecting distance information from legs of a passenger to the surface of the instrument panel, and the airbag controller is used for controlling the knee safety airbag to participate in protection according to the seat taking information and the distance information. According to the knee airbag explosion system, secondary injury to legs of a passenger caused by detonation of the knee safety air bag under the conditions that the vehicle is collided and the space of the legs of the passenger is insufficient is avoided, and intelligent control of a knee safety air bag detonation strategy is realized by the air bag controller.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of vehicle safety, in particular to a knee airbag ignition system and method. Background technique [0002] The airbag system is an occupant protection system, generally including driver airbags, copilot airbags, seat airbags, knee airbags, side air curtains, etc. The working principle of the airbag system is: the acceleration sensor transmits the sensed collision signal to the airbag controller, and the airbag controller calculates and analyzes the collision signal. If the collision is strong enough to meet the conditions for detonating the airbag, the airbag controller will issue a detonation command, and the gas generator will quickly release a large amount of gas into the airbag, forming a gas-filled elastic airbag between the occupant and the interior components to avoid or Slow down the secondary collision that may occur between the occupant and the car interior, and buffer and a...

AI Technical Summary

Problems solved by technology

The existing airbag ignition control strategy is as follows: when a collision occurs, when the collision intensity reaches the airbag detonation condition, the airbag controller sends an airbag ignition command, and the driver's airbag and the co-pilot's airbag are jointly detonated. The difference in knee space caused by different occupant types and sitting postures is not considered. Therefore, under certain operating conditions, the occupant's legs will suffer secondary injuries due to insufficient space for knee airbag deployment

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