Vehicle accident analyzing apparatus

A vehicle accident analyzing apparatus comprising a crash parameter determination apparatus for determining crash parameters of a vehicle based on input signals from sensors mounted in the vehicle, the crash parameter determination apparatus comprising:

• a triggering unit for generating a trigger signal if the input signals indicate a crash situation of the vehicle;
• an area determination unit for generating a most probable impact area of the vehicle based on the input signals in response to the trigger signal;
• and
• a parameter calculation unit for calculating the crash parameters based on the input signals and the most probable impact area,
• the triggering unit comprising:
• a level determination unit for determining levels of the input signals with predefined thresholds;
• a timer operated in response to a determination result of the level determination unit;
• a time determination unit for comparing operating time of the timer with predetermined duration time;
• and
• logical operators for generating the trigger signal by combining respective determination results of the level determination unit and the time determination unit, wherein
• the trigger signal enables processes of the area determination unit and the parameter calculation unit to be started;
• the area determination unit comprises an area classification and assignment unit and an area counter triggered by the trigger signal;
• the area classification and assignment unit determines the most probable impact location of the vehicle to classify the impact area in every time instant;
• the area counter detects the most probable impact area by individually counting the impact area which has been classified in every time instant by the area classification and assignment unit;
• and
• the parameter calculation unit calculates an impact location of the vehicle and an impact force of a crash opponent, and calculates an impact angle based on a principle direction of the impact force applied to the impact location.