Crash Detection and Determining Triggering (ignition) Point

The MRS 5 control unit determines whether a crash situation has occurred based on the values detected by the sensors and the triggering algorithm. The threshold values of two independent sensors must be detected in order to detect a crash. In the case of a frontal crash for example, the acceleration values from the B-pillar satellite and from the longitudinal acceleration sensor must be detected in the control unit.

The values serve the purpose of determining the crash severity and the crash direction. Based on the crash severity and direction, an algorithm determines the triggering (ignition) points of the restraint systems to be activated.