Control method of two-stage gas generator of side curtain airbag for rolling

Abstract

The invention discloses a method for controlling a two-stage gas generator of a rollover side air curtain. First, the lateral acceleration and the speed of the left and right wheels are obtained through the vehicle acceleration sensor and the wheel speed sensor, and then the ECU recognizes the acceleration signal to determine the vehicle The collision form of the traffic accident is a side collision or a rollover. Finally, according to the judgment result, the control command for the detonation of the airbag is carried out, and the action of the first-stage gas generator and the second-stage gas generator is triggered. The invention takes into account both side collision accidents and rollover accidents, and can effectively protect the occupants of both accidents; judge whether the vehicle is side collision or rollover according to the lateral acceleration and wheel speed of the vehicle, improve the accuracy of the judgment effect, and collect The sensors of vehicle lateral acceleration and wheel speed are all existing structures of the vehicle, which improves the feasibility of the control scheme.

Description

technical field [0001] The invention belongs to the technical field of automobile passive safety, and relates to a method for controlling a two-stage gas generator of a rolling side air curtain. Background technique [0002] The Ministry of Communications of my country divides traffic accidents into the following categories: frontal collision, side collision, rear-end collision, opposite scrape, rolling, rolling, crash, fire, fixed collision and other 11 types. Among them, frontal collision, side collision and rear-end collision are the main forms of modern traffic accidents. According to the 2010 Traffic Accident Statistics of the Traffic Accident Statistical Annual Report of the Traffic Management Bureau of the Ministry of Public Security of the People's Republic of China, Accident Form-Four Statistics: There were 5,440 rollover accidents in 2010, accounting for 2.48% of the total number of traffic accidents. But the death toll of rollover accidents reached 3570, accounti...

AI Technical Summary

Problems solved by technology

But the existing side safety air curtain has the following design flaws: 1, the deployment time of the traditional side safety air curtain is relatively short, and it cannot effectively protect the occupant and the automobile caused by the continuous rolling of the car in the rollover accident; 2, the existing side safety air curtain The air curtain is not effective for occupant protection in rollover accidents, and its control strategy is only effective for side collisions; 3. It cannot effectively predict rollover

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