| 摘要 |
A device controls a person protection system of a motor vehicle having a sensor system which, for detecting an object colliding with the motor vehicle, includes a hose arranged along a body section width of the vehicle and closed-off by a pressure sensor on at least one end. In the event of an impact with an object, a pressure change is caused in the hose interior due to deformation of the hose and is detectable as a pressure signal of the pressure sensor by an evaluating unit connected with the pressure sensor. The evaluating unit detects vibrations originating from the motor vehicle during a driving and testing operation and coupled into the hose, which vibrations result in pressure fluctuations in the hose interior which are lower than a pressure fluctuation caused by an impacting object, and evaluates these vibrations for a predefined time period for diagnostic purposes.
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