Safety mechanism for sensors
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United States of America Patent
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Jul 23, 2024
Grant Date -
Nov 24, 2022
app pub date -
Mar 10, 2022
filing date -
Mar 10, 2022
priority date (Note) -
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Abstract
The present invention relates to a method and an apparatus for detecting a failure of a sensor device during operation of the sensor device. A test signal is generated in a first frequency band that is above a signal frequency band of the sensor device and fed into a sensor element of the sensor device. A set of samples is obtained, and a magnitude value is derived from said at least two consecutive samples at the first frequency band. The magnitude value is compared to a magnitude threshold value that defines a minimum for the magnitude value and if the magnitude value is below the magnitude threshold value, it is determined that an error has occurred in the sensor device.
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