Sensor arrangement for use in pressure reservoir of electro-hydraulic brake system in motor vehicle, has modulator to modulate sensor signal of sensor during measuring of periodic test signal independent of sensor signal

摘要

The arrangement (1) has an evaluation unit (3) to which a sensor signal of a sensor (2) i.e. pressure sensor of brake system, representing a measured variable is supplied. A modulator (9) modulates the sensor signal of the sensor during measuring of a periodic test signal independent of the sensor signal. The sensor includes a signal generator (12) that is attached to the modulator and/or has an amplifier (6) acting on the sensor signal. The modulator is connected to a bridge branch (8) of a measuring bridge (4) of the sensor. An independent claim is also included for a method for operating a sensor arrangement.