Method for determining information on an integrity of signal processing components within a signal path, signal processing circuit and electric control unit
AssigneeInfineon Technologies AG
InventorsWolfgang Granig, Dirk Hammerschmidt, Friedrich Rasbornig, Michael Strasser, Daniel Valtiner
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Abstract
A method for determining information on an integrity of signal processing components within a signal path includes adding an alive signal to a signal at a first position within the signal path and detecting an added alive signal corresponding to the alive signal at a second position within the signal path. Further, the method includes determining the information on the integrity based on the detected signal.
Claims20
A method for determining information on an integrity of at least one signal processing component within a signal path, comprising:
- receiving a trigger signal;
- adding, based on receiving the trigger signal, an alive signal to a first signal at a first position within the signal path;
- detecting a second signal at a second position within the signal path,
- the second signal being based on adding the alive signal to the first signal;
- and
- determining the information on the integrity based on the second signal.
A signal processing circuit having a signal path for processing a sensor signal, the signal processing circuit comprising:
- an alive signal generator comprising a signal input configured to receive a trigger signal,
- the alive signal generator being configured to add an alive signal to the sensor signal at a first position within the signal path based on receiving the trigger signal.
An Electric Control Unit for receiving signals from a signal processing circuit, the Electric Control Unit comprising:
- an integrity determination circuit configured to:
- receive an added alive signal,
- the added alive signal being based on an alive signal being added to a signal in response to a trigger signal, and
- determine information regarding an integrity of at least one signal processing component within the signal processing circuit based on a comparison of the added alive signal and an expected alive signal.
Dependencies are inferred from the claim text.