Fault detection
AssigneeMelexis Technologies SA
InventorsJavier Bilbao De Mendizabal, Vincenzo Sacco
Life of this patent
Estimating the term…
Abstract
A method for detecting a fault in a sensor arrangement is described. The method comprising modulating at least one physical parameter of the sensor arrangement by a configuration value, wherein the at least one physical parameter of the sensor arrangement is modulated during operation of the sensor arrangement, comparing an output of the sensor arrangement with a reference output related to the modulated at least one physical parameter and detecting a fault based on the comparison. Furthermore, also a corresponding processing circuit is described.
Claims18
A method for detecting an operational fault in a sensor arrangement, the method comprising:
- modulating at least one physical parameter of the sensor arrangement by a configuration value, wherein the at least one physical parameter of the sensor arrangement is modulated during operation of the sensor arrangement;
- comparing an output of the sensor arrangement with a reference output related to the modulated at least one physical parameter;
- and
- detecting an operational fault in the sensor arrangement based on the comparison, wherein the operational fault is detected when the output deviates from the reference output, and
- wherein
- the reference output is a stored output that has been stored before being compared to the output, or
- the output is a modulated output using a modulation of a first physical parameter of the sensor arrangement with a first configuration value and the reference output is a modulated output using a modulation of the first physical parameter of the sensor arrangement with a second configuration value.
A processing circuit, comprising:
- a modulator configured to modulate at least one physical parameter of a sensor arrangement by a configuration value, wherein the at least one physical parameter of the sensor arrangement is modulated during operation of the sensor arrangement;
- a comparator configured to compare an output of the sensor arrangement with a reference output related to the modulated at least one physical parameter;
- and
- a detector configured to detect an operational fault in the sensor arrangement based on the comparison, wherein the operational fault is detected when the output deviates from the reference output, and
- wherein
- the reference output is a stored output that has been stored before being compared to the output, or
- the output is a modulated output using a modulation of a first physical parameter of the sensor arrangement with a first configuration value and the reference output is a modulated output using a modulation of the first physical parameter of the sensor arrangement with a second configuration value.
Dependencies are inferred from the claim text.