Patent ID: 8401739

Claim:
A device for activating a security system in a vehicle, the device comprising: at least two vehicle sensors ( 4 ), wherein each of the vehicle sensors can record vibrations in frequency ranges, which are generated both by an acceleration and by structure-borne noise, and at least one sensor comprises a measuring value sensor ( 4 . 1 ) for recording vibrations; a central unit ( 2 ) which evaluates signals from the vehicle sensors ( 4 ), and which activates the security system according to said signals, wherein the vehicle sensors; a) comprise a first sensitivity direction ( 7 . 1 ) of at least one measuring value sensor ( 4 . 1 ) for recording the acceleration; b) a second direction of sensitivity ( 7 . 2 ) of at least one measuring value sensor ( 4 . 1 ) for recording the structure-borne noise; and c) the first direction of sensitivity ( 7 . 1 ) and the second direction of sensitivity ( 7 . 2 ) of each vehicle sensor ( 4 ) are aligned to each other at an angle of almost 90 degrees; and wherein the vehicle sensors are arranged in relation to each other in such a manner that the first sensitivity direction ( 7 . 1 ) of the first vehicle sensor and the second sensitivity direction ( 7 . 2 ) of the second vehicle sensor, and the second sensitivity direction ( 7 . 1 ) of the first vehicle sensor and the first direction of sensitivity ( 7 . 2 ) of the second vehicle sensor are almost identical.