Arrangement for processing sensor signals

Details Arrangement for processing sensor signals Arrangement for processing sensor signals

G - Physics

01

D

G01D 5/16 (2006.01) G01D 3/02 (2006.01)

Patent

CA 2046269

The arrangement serves to process sensor signals furnished by a sensor which when fed with a supply signal in response to the action of a physical measured quantity generates a measuring effect representing the dependence of an electrical characteristic quantity on the physical measured quantity. It includes a signal processing circuit which operates by the principle of quantized charge transport by means of switch-capacitor structures, The signal processing circuit establishes a charge balance by opposite integration of measuring charge packets dependent on the measuring effect and compensation charge packets independent of the measuring effect and furnishes an analog output signal corresponding to the integration result. The supply of the sensor is influenced by feedback of the analog output signal or of a feedback signal in fixed relationship thereto for obtaining the charge balance. By this feedback the analog output signal is regulated so that it is proportional to the measurement result.

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