Patent ID: 8861901
Filing Date: 2014-10-14
Classification: B60R,G01D

Abstract:
1. An impact sensor of an active hood system disposed between an energy absorber and a back beam disposed in a bumper to sense an impact force at the time of a crash with a pedestrian, the impact sensor comprising: a rear member disposed at a front of the back beam; optical fiber sensors each disposed on upper and lower portions of a front of the rear member and configured to sense an impact force delivered from the bumper at the time of the crash with the pedestrian; a front member disposed at the front of the rear member and having a protrusion part configured to press the optical fiber sensors by the impact force delivered from the bumper at the time of the crash with the pedestrian; and a membrane switch disposed between the front member and the optical fiber sensor, divided into a plurality of regions from a left of the front member to a right thereof, and configured to sense, as a crashing position of the pedestrian, a region which is pressed when the pedestrian crashes with the region.