Sensor arrangement for detecting e.g. pressure of micro electromechanical system of motor car, has sensor for detecting physical quantity, and device for online monitoring sensitivity of arrangement

摘要

The arrangement (10) has a sensor (12) for detecting a physical quantity. A converter (14) transforms a physical input into voltage. An analog/digital (A/D) converter (16) produces a digital sensor output signal. A device (18) online monitors sensitivity of the arrangement. A stimulus generator (20) generates sensitivity of a stimulus. A stimulus passport filter (24) provides a stimulus filter output signal. A multiplier (28) multiplies the stimulus filter output signal with a correlation signal. A stimulus band elimination filter is placed between the A/D converter and an evaluation unit. An independent claim is also included for a method for online monitoring of a sensor arrangement.