Sensor device
AssigneeMicronas Intermetall GmbH
InventorLothar Blossfeld
Life of this patent
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Abstract
A sensor device is disclosed having a controller (9) which defines at least a first operating state (b1) and a second operating state (b2), the first operating state being preferably triggerable by application of a supply voltage (U.sub.B). A setting facility (5) adapts the operating range of a measuring facility (2) quickly to the respective DC level (s0) of a sensor signal (s1) in the first operating state (b1), and determines a mean sensor signal value (sm) for tracking purposes in the second operating state (b2). An output circuit (4) provides a first output signal (s3) independent of the sensor signal (s1) in the first operating state and a second output signal (s4) dependent on the superposed sensor signal (s2) in the second operating state (b2).
Claims16
A sensor device comprising:
- a controller defining at least a first operating state and a second operating state, said first operating state being preferably triggerable by application of a supply voltage,
- a setting facility which in said first operating state adapts the operating range of a measuring facility to the respective DC level of a sensor signal by a setting value (sm0), and which in said second operating state determines a mean sensor signal value, and
- an output circuit producing in said first operating state a first output signal, which is independent of said sensor signal, and in a defined state, and in said second operating state a second output signal which is dependent on a sensor signal superposed on said mean sensor signal value.
The sensor device of claim 7, wherein the setting and/or control parameters are stored as digital values in an on-chip memory device, particularly in a nonvolatile memory device.
Dependencies are inferred from the claim text.