Methods, apparatuses, systems, and computer program products for multi-point shunt calibration

Patent metadata

Field	Value
Publication number	US-11754656-B2
Application number	US-202318151165-A
Country	US
Kind code	B2
Filing date	Jan 6, 2023
Priority date	Apr 25, 2019
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

Embodiments of the present disclosure include methods, apparatuses, systems, and computer program product for enabling multi-point shunt calibration of a sensor device. Multi-point shunt calibration provides at least a first, second, and third simulated calibration output, each simulated calibration output corresponding to an actual reading value and an expected reading value. The simulated calibration outputs are associated with a predefined output sequence, where each simulated calibration output is separated from an adjacent simulated calibration output by an output step size. Some embodiments are configured for automatically outputting each simulated calibration output for a particular period of time before outputting an adjacent simulated calibration output in the predefined output sequence. The various simulated calibration outputs, actual reading values, and/or expected values may be used in determining calibrated reading values for the sensor device.

First claim

What is claimed is:

1. A multi-point shunt calibration sensor device comprising:
a calibration component configured to communicate with a sensor device, the calibration component configured to:
determine a first simulated calibration output associated with a first actual reading value and a first expected reading value,
determine a second simulated calibration output associated with a second actual reading value and a second expected reading value,
determine a third simulated calibration output associated with a third actual reading value and a third expected reading value,
determine a calibrated sensor parameter value associated with the measuring bridge component based on: (1) the first actual reading value and the first expected reading value, (2) the second actual reading value and the second expected reading value, and (3) the third actual reading value and the third expected reading value, and
set at least one adjustable sensor parameter associated with the sensor device based on the determined calibrated sensor parameter value.

2. The multi-point shunt calibration sensor device of claim 1 , wherein the first, second, and third expected reading values fall within an operating range associated with the multi-point shunt calibration sensor device.

3. The multi-point shunt calibration sensor device of claim 1 , wherein the shunt calibration component is further configured to:
determine at least one additional simulated calibration output, where each additional simulated calibration output is associated with an additional actual reading value and an additional expected reading value, and
determine the calibrated sensor parameter value based on the at least one additional simulated calibration output.

4. The multi-point shunt calibration sensor device of claim 1 , wherein the calibrated sensor parameter value is based on a first error value that depends upon the first actual reading value and the first expected reading value, a second error value based on the second actual reading value and the second expected reading value, and a third error value based on the third actual reading value and the third expected reading value.

5. The multi-point shunt calibration sensor device of claim 1 , wherein the first, second, and third simulated calibration outputs are associated with a predefined output sequence within an operating range associated with the sensor device.

6. The multi-point shunt calibration sensor device of claim 1 , wherein the second simulated calibration output is determined after a first period of time following outputting of the first simulated calibration output; and
the third simulated calibration output is determined after a second period of time following outputting of the second simulated calibration output.

7. A sensor device comprising:
at least a measuring bridge component and a shunt calibration component, wherein the shunt calibration component is configured to:
determine a first simulated calibration output associated with a first actual reading value;
determine a second simulated calibration output associated with a second actual reading value;
determine a third simulated calibration output associated with a third actual reading value;
determine a calibrated sensor parameter value associated with the measuring bridge component based on the first actual reading value, the second actual reading value and the third actual reading value;
set at least one adjustable sensor parameter associated with the sensor device based on the determined calibrated sensor parameter value.

8. The sensor device of claim 7 , wherein the calibrated sensor parameter value associated with the measuring bridge component is determined at least using the formula:

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Assignees

• Honeywell Int Inc

Inventors

• Malhan Vishal
• Shenoy Raghavendra
• Richards Brian

Classifications

• G08C23/04 Primary

  using light waves, e.g. infrared · CPC title

• G01R35/02 Primary

  of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating · CPC title

• G08C25/00

  Arrangements for preventing or correcting errors; Monitoring arrangements · CPC title

• G01D18/002

  Automatic recalibration (G01D18/008 takes precedence) · CPC title

• G01D18/008

  with calibration coefficients stored in memory · CPC title