Calibration device for acceleration sensor that is utilized in electronic stability control system to e.g. detect movement of vehicle, has regulating installation for adjusting output signal of sensor according to sensitivity and/or shift

摘要

The device (1) has a voltage source (3) electrically connected with a sensor (10), and a control installation (4) for controlling the voltage source so that a voltage (5) applied to the sensor exhibits three different voltage values. A current instrument (2) measures a current (6) passing through the sensor. A regulating installation (7) determines sensitivity, a shift and/or a drift of the sensor based on the measured current and the regulated voltage and adjusts an output signal of the sensor according to the sensitivity and/or the shift. The sensor comprises two FETs. An independent claim is also included for a method for calibrating a sensor.