Collision event recording system and method

Abstract

The invention relates to a collision event recording system and method. The collision event recording system is connected with an airbag controller, and is characterized in that the system comprises amemory for storing collision data of a plurality of collision events, and a collision event damage value determination unit that determines the damage value of each collision event on the basis of the acceleration signal of each collision event received by the airbag controller from the vehicle collision sensor when a collision occurs; after the occurrence of a collision, the collision event datarecording part is used for recording the collision data of each collision event into the memory, and recording the collision data of each collision event collected by the airbag controller into the memory in sequence from high to low according to the damage value of each collision event when the collision data of a plurality of collision events needs to be recorded simultaneously.

Description

technical field [0001] The present invention relates to the technical field of automobile passive safety, in particular, to a collision event recording system and method. Background technique [0002] With the popularization of vehicles, more and more traffic accidents occur in daily life, and people pay more and more attention to traffic and automobile safety. When a vehicle collides, the data related to the collision event is usually recorded in the airbag controller for analysis of the cause of the accident after the event, which is very important for improving the passive safety of the car and avoiding accidents. [0003] However, in the case of recording the relevant data of the collision event in the airbag controller, when the collision occurs, the battery power supply may be cut off. At this time, the recording of the collision event data mainly depends on the capacitance, so the recording time is affected by the size of the capacitance. . Moreover, when a collisio...

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Problems solved by technology

[0003] However, in the case of recording the relevant data of the collision event in the airbag controller, when the collision occurs, the battery power supply may be cut off. At this time, the recording of the collision event data mainly depends on the capacitance, so the recording time is affected by the size of the capacitance.

Moreover, when a collision occurs, the system is often the busiest time. If the capacitor stops supplying power, the data of the collision event will be incompletely recorded. The principle of fixed priority, then the data with lower event correlation may be recorded first

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