Controller for controlling person-protection unit in vehicle, has evaluating circuit monitoring air pressure sensor depending on combination of pressure and diagnostic signals, where evaluating circuit comprises correlator

摘要

The controller (SG) has an interface (IF2) providing a pressure signal of an air pressure sensor (PPS1, PPS2), and a microcontroller (Muc) controlling a person protection unit (PS) depending on the pressure signal. The microcontroller monitors the air pressure sensor depending on a combination of the pressure signal and a diagnostic signal e.g. vehicle speed, where the evaluating circuit comprises a correlator. The diagnostic signal characterizes an actuation of unit for changing pressure in a surrounding of the air pressure sensor. An independent claim is also included for a method for controlling a person-protection unit.