Identifying manipulation of a sensor unit
AssigneeVitesco Technologies GmbH
InventorsAchim Reuther, Ludwig Schifferl
Life of this patent
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Abstract
Various teachings of the present disclosure include a method for identifying manipulation of a sensor unit including a measuring unit to measure a physical property and a control unit to receive measurement signals from the measuring unit and to send control signals to the measuring unit. The method may include: sending a diagnostic signal to the measuring unit from the control unit; and receiving at the control unit a response signal generated by the measuring unit in response to the diagnostic signal; or identifying manipulation of the sensor unit if a response signal is not received.
Claims9
A method for a sensor unit to self-test for tampering, the sensor unit including a measuring unit to measure a physical property and a control unit to receive measurement signals from the measuring unit and to send control signals to the measuring unit, the method comprising:
- sending a predetermined diagnostic signal to the measuring unit from the control unit;
- wherein the measuring unit is programmed to generate a response signal upon receiving the predetermined diagnostic signal;
- and
- wherein the measuring unit is programmed to send the response signal to the control unit in response to the diagnostic signal;
- and
- issuing a warning indicating manipulation of the sensor unit if no response signal is received by the control unit or if the control unit determines the response signal fails a predetermined criterion.
Dependencies are inferred from the claim text.