Detecting and identifying a change in a vibratory meter
AssigneeMicro Motion, Inc.
InventorsTimothy J. Cunningham, Andrew Timothy Patten, Mark James Bell
Life of this patent
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Abstract
A meter electronics (20) for detecting and identifying a change in a vibratory meter (5) is provided. The meter electronics (20) includes a processing system (202) including a storage system (204) configured to store a central tendency value of a meter verification parameter and dispersion value of the meter verification parameter. The processing system (202) is configured to obtain the central tendency value and the dispersion value from the storage system (204) and determine a probability based on the central tendency value and the dispersion value to detect if the central tendency value is different than a baseline value.
Claims18
A meter electronics (20) for detecting and identifying a change in a vibratory meter (5), the meter electronics (20) comprising:
- a processing system (202) including a storage system (204) configured to store a central tendency value of a meter verification parameter and dispersion value of the meter verification parameter, said processing system (202) being configured to:
- obtain the central tendency value and the dispersion value from the storage system (204);
- and
- determine a probability based on the central tendency value and the dispersion value to detect if the central tendency value is different than a baseline value, wherein the probability comprises a confidence interval of the central tendency value, wherein the confidence interval is compared to zero, and wherein:
- if the confidence interval does not include zero, then detect that the central tendency value does not equal the baseline value;
- and
- if the confidence interval includes zero, then detect that the central tendency value equals the baseline value;
- determine a condition of the conduit (130, 130′) based on a combination of:
- a first detected stiffness change associated with a first location of a conduit (130, 130′) of the vibratory meter (5);
- and
- a second detected stiffness change associated with a second location of the conduit (130, 130′) of the vibratory meter (5).
A method for detecting and identifying a change in a conduit of the vibratory meter, the method comprising:
- obtaining a central tendency value of a meter verification parameter and a dispersion value of the meter verification parameter from a storage in a meter electronics of the vibratory meter;
- and
- determining a probability based on the central tendency value and the dispersion value to determine if the central tendency value is different than a baseline value, wherein the probability comprises a confidence interval of the central tendency value, and wherein the confidence interval is compared to zero, wherein:
- if the confidence interval does not include zero, then detect that the central tendency value does not equal the baseline value;
- and
- if the confidence interval includes zero, then detect that the central tendency value equals the baseline value;
- and
- determine a condition of the conduit (130, 130′) based on a combination of:
- a first detected stiffness change associated with a first location of a conduit (130, 130′) of the vibratory meter (5);
- and
- a second detected stiffness change associated with a second location of the conduit (130, 130′) of the vibratory meter (5).
Dependencies are inferred from the claim text.