US 2019/0094165 A1 · Condition Monitoring of an Object

Abstract

Disclosed is a method for estimating a condition of an object, in particular a cable or a pipeline, and/or material, in particular soil, surrounding the object. The method includes measuring a time course of values of the temperature of an optical fiber using a distributed temperature sensing system employing the optical fiber in proximity to the object, adjusting a value of at least one model parameter of plural model parameters of a thermal model, in particular relating to thermal properties of the object and the surrounding material, based on the measured temperature time course, comparing the adjusted value of at least one model parameter with a value determined theoretically and/or based on physical modeling and/or measured from another information source and/or predetermined and/or based on a value of a load and/or temperature the object is subjected to, to estimate the condition of the object and/or the surrounding material.

Claims20

Dependent claims

A method for estimating a condition of at least one of an object and material surrounding the object, the method comprising:

measuring a time course of values of a temperature of an optical fiber using a distributed temperature sensing system employing the optical fiber in proximity to the object;
adjusting a value of at least one model parameter of plural model parameters of a thermal model based on the measured temperature time course;
comparing the adjusted value of at least one model parameter with a value determined based on at least one of:
on theory, on physical modeling, on a measured value from another information source, on a predetermined value, on a value of a load, on a temperature the object is subjected to, to estimate the condition of at least one of the object and the surrounding material.

1 more element

A method for estimating a condition of at least one of an object and material surrounding the object, the method comprising:

measuring a time course of values of the temperature of an optical fiber using a distributed temperature sensing system employing the optical fiber in proximity to the object;
deriving, using a value of at least one of a load and a temperature the object is subjected to, a time course of temperature values of the optical fiber based on a thermal model having plural model parameters;
comparing the measured temperature time course with the derived temperature time course, to estimate the condition of at least one of the object and the surrounding material.

Dependencies are inferred from the claim text.

Condition Monitoring of an Object

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Condition Monitoring of an Object

Life of this patent

Abstract

Claims20