Diagnostic coverage improvements in redundant sensor element fault detection architectures
AssigneeAnalog Devices, Inc.
InventorJoe Bergeron
Life of this patent
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Abstract
Aspects of the present disclosure provide apparatuses for minimizing the impacts of differences in sensor measurements while sensors are being used. An apparatus in accordance with an aspect of the present disclosure may comprise a first sensor, a second sensor, a combiner, coupled to the first sensor and the second sensor, and a comparator, coupled to the first sensor and the second sensor, wherein the combiner and comparator modify a dynamic limit of the apparatus based at least in part on a first uncertainty in a first output of the first sensor and a second uncertainty in a second output of the second sensor.
Claims18
An apparatus, comprising:
- a first sensor configured to output a first output;
- a second sensor configured to output a second output;
- a combiner, coupled to the first sensor and the second sensor;
- and
- a comparator, coupled to the first sensor and the second sensor,
- wherein the combiner and comparator are mutually configured to modify a dynamic limit of the apparatus based at least in part on a first uncertainty in the first output of the first sensor and a second uncertainty in the second output of the second sensor, by averaging the first output and the second output, and adding one or more faults detected in the first uncertainty and the second uncertainty, to increase an operating range for detecting uncertainties outputted by the first sensor and/or the second sensor.
An integrated sensor, comprising:
- a first sensor configured to output a first output;
- a second sensor configured to output a second output;
- a combiner, coupled to the first sensor and the second sensor;
- and
- a comparator, coupled to the first sensor and the second sensor, wherein the combiner and comparator are mutually configured to modify a dynamic limit of the apparatus based at least in part on a first uncertainty in the first output of the first sensor and a second uncertainty in the second output of the second sensor, by averaging the first output and the second output, and adding one or more faults detected in the first uncertainty and the second uncertainty, to increase an operating range for detecting uncertainties outputted by the first sensor and/or the second sensor.
Dependencies are inferred from the claim text.