Impact Sensor System For Pedestrian Protection

摘要

An impact sensor system for pedestrian protection comprises at least one foil-type switching element having a plurality of active areas. The foil-type switching element comprises at least a first carrier foil and a second carrier foil arranged at a certain distance by means of at least one first spacer, wherein said at least one first spacer comprises a plurality of recesses defining at least a first part of said active areas. In each active area, at least two electrode structures are arranged between said first and second carrier foils in such way that in re-sponse to a force acting on the active area of the switching element, the first and second carrier foils are pressed together against the reaction force of the elastic carrier foils and that, above a predetermined activation threshold force, an electrical contact is established between the at least two electrode struc-tures. According to the invention said foil-type switching element is configured such that the activation threshold force of a first group of said plurality of active areas is different from an activation threshold force of a second group of said plurality of active areas.