Patent ID: 7756680
Filing Date: 2010-07-13
Classification: G08C

Abstract:
1. An apparatus for generating a sensor signal which is suitable for online testing of a signal path from a sensor cell to an evaluation point, the sensor cell providing a sensor cell output signal as a function of a physical quantity to be detected, the apparatus comprising: a provider for providing at least two mutually different test signals; a changer for changing the sensor cell output signal on the basis of the at least two mutually different test signals in accordance with a predetermined change specification to acquire the sensor signal, so that the sensor signal depends on the sensor cell output signal and the at least two test signals; an output unit for outputting the sensor signal or a signal derived from the sensor signal onto the signal path; and a selector for selecting one of the at least two mutually different test signals, and the changing includes a change in the sensor cell output signal on the basis of the currently selected test signal of the at least two mutually different test signals so as to switch between the at least two mutually different test signals, depending on the selection.