Proximity trigger safety air bag and safety control method thereof

Abstract

The invention discloses a proximity trigger safety air bag comprising a speed and distance detecting module, an acceleration transducer, a control module and an air bag module, wherein the speed and distance detecting module is used for detecting whether the speed of an objective obstacle reaches a preset speed danger value or not and whether the distance of the objective obstacle reaches a preset distance danger value or not; the control module is connected with the speed and distance detecting module and the acceleration transducer and is used for receiving signals sent by the speed and distance detecting module and the acceleration transducer; and the control module is also connected with the air bag module and used for controlling the air bag module. The invention also discloses a method of carrying out safety control by utilizing the proximity trigger safety air bag. By means of the proximity trigger safety air bag provided by the invention, the ignition time of the air bag can be advanced and a safety belt can be tensioned before collision in the mean time, therefore, the passenger safety can be effectively protected.

Description

technical field [0001] The invention relates to a proximity-triggered safety airbag and a safety control method thereof. Background technique [0002] Most of the automotive airbag triggering and detonation systems currently on the market use collision sensors. According to the acceleration of the car collision, after sensing a certain degree of collision with the target, the acceleration information is processed before the detonation signal is given to activate the gas generator and deploy the airbag. Ideally, it takes nearly 10ms to more than ten milliseconds from the collision contact to the ignition signal given by computer analysis and judgment. The acceleration when the airbag is actually opened has generally reached 7-10g; The inflation time of the airbag is 30ms to fully open the airbag. It can be seen that under ideal conditions, it takes about 40-60ms from the collision contact to the airbag fully inflated. Regarding the determination of the best ignition moment,...

AI Technical Summary

Problems solved by technology

In order to ensure that the human head can move forward about 13cm correctly, many high-end vehicles now do not hesitate to add various auxiliary detection devices, such as detecting the height, weight, position, sitting posture and distance from the steering wheel of the driver and occupant, etc. , provided to the computer for analysis and judgment processing, which greatly increases the complexity and cost of the device

It can be seen that in the collision process of the existing old-fashioned ignition method, it is necessary to perform complex calculations, identification and judgments on the collision acceleration information before it can be determined whether there is a collision and finally an ignition signal is given.

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