DEVICE FOR DETECTING THE IMPACT OF AN OBJECT ON A VEHICLE

摘要

The invention describes a device for detecting the impact of an object on a vehicle, said device comprising a hose (2) filled with a filling medium (3) having a first end and a second end opposite the first end. Moreover, the device comprises a first pressure sensor (1a) that is connected to the first end of the hose and a second pressure sensor (1b) that is connected to the second end of the hose, wherein the first and second pressure sensors (1a, 1b) each provide a signal representing the pressure of the filling medium (3). A computing unit (5) is connected by means of connecting lines (4) to the first and second pressure sensors (1a, 1b) for the exchange of data, wherein the computing unit (5) is designed to process signals received from the first and second pressure sensors (1a, 1b). The hose (2) is sealed from the environment and from the first and second pressure sensors (1a, 1b) such that the prevailing internal pressure (p2) of the filling medium (3) in the hose fluctuates independently of an environmental pressure (p1) and thus depending on a temperature. The computing unit (5) is designed to process temperature-based changes of the internal pressure (p2) in the operation of the vehicle as a criterion for the diagnosis of the functional capability of the device.