Impact detection system for vehicle and impact detection system method therefor

An impact detection system for a vehicle, the system comprising:

• an accelerometer configured to generate acceleration signals;
• an impact value calculating device configured to determine an impact value corresponding to a magnitude of an impact applied to the vehicle from outside;
• an impact location estimating device configured to estimate an impact location to which the impact is applied in the vehicle and to generate an impact location signal including a parameter value corresponding to the estimated impact location using the acceleration signals from the accelerometer;
• and
• an effective impact determining device configured to compare the determined impact value with an impact detection reference value corresponding to the estimated impact location to determine whether the impact is an effective impact, and output an operation signal for controlling a device in the vehicle,
• wherein the effective impact determining device is configured to determine the impact detection reference value corresponding to the impact location by comparing the parameter value included in the impact location signal with information about an impact detection reference value for each location of the vehicle matched with a parameter value of a corresponding region stored in a memory, and
• wherein the region is classified to identify the impact location according to the impact location of the vehicle, and
• wherein the impact detection reference value is differently set corresponding to the region,
• wherein the impact detection reference value and the region are matched one-to-one, and
• wherein the impact detection reference value for each location is set based on a distance between each location and the accelerometer included in the impact value calculating device, a length of a path where an impact is delivered from each location to the accelerometer, and quality of material on the path where the impact is delivered.