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US 2021/0148738 A1Published application
Sensor system using safety mechanism
AssigneeInfineon Technologies AG
InventorsWolfgang GRANIG, Dirk HAMMERSCHMIDT
Life of this patent
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Abstract
A sensor device using verification includes a sensor component and a verification component. The sensor component is configured to generate first data and second data. The verification component is configured to analyze the first data and the second data and generate verification data based on the first data and the second data.
Claims15
A system, comprising:
- a sensor device comprising a first sensor element configured to sense a first property and generate first data representing a first raw signal, a second sensor element configured to sense a second property and generate second data representing a second raw signal, and a digital signal processor configured to generate calculation data based on the first data and the second data, the sensor device further comprising a first path coupled to the digital signal processor, a second path coupled to the first sensor element, and a third path coupled to the second sensor element;
- and
- a verification circuit implemented in a control unit external to the sensor device, the verification circuit configured to receive the first data, the second data, and the calculation data, and wherein the verification circuit is configured to generate verification data including a recalculation based on the received first data and the received second data.
A method of verifying sensor data, the method comprising:
- sensing by a first sensor element of a sensor device a first property to generate first data, the first data representing a first raw signal;
- sensing by a second sensor element of a sensor device a second property to generate second data, the second data representing a second raw signal;
- generating by the sensor device calculation data based on the first data and the second data;
- receiving by a verification circuit implemented in a control unit external to the sensor device the first data, second data, and the calculation data;
- generating verification data based on the received first data, the received second data, and the received calculation data, wherein generating the verification data includes a recalculation based on the received first data and the received second data;
- and
- identifying a fault based on the verification data.
4 more elements
Dependencies are inferred from the claim text.