Pipeline thickness measurement sensor device
AssigneeYokogawa Electric Corporation
InventorsNobuo Okabe, Satoshi Yoshitake, Kazuma Takenaka, Yoshiaki Tanaka, Shumpei Ito
Life of this patent
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Abstract
An absolute thickness distribution cannot be accurately calculated with a conventional technique. A sensor device is provided that includes a plurality of magnetic sensors arranged to face an outer circumference surface of a pipeline and ultrasonic sensors arranged to face the outer circumference surface and measure a thickness of the pipeline in a measurement region in which the plurality of magnetic sensors measure a magnetic field, the ultrasonic sensors being less than the plurality of magnetic sensors.
Claims17
A sensor device comprising:
- a plurality of magnetic sensors arranged to face an outer circumference surface of a pipeline;
- ultrasonic sensors arranged to face the outer circumference surface and measure a thickness of the pipeline in a measurement region in which the plurality of magnetic sensors measure a magnetic field, a number of the ultrasonic sensors being less than a number of the plurality of magnetic sensors;
- and
- a calculation unit, wherein the calculation unit is configured to:
- calculate a relative thickness distribution of the pipeline in the measurement region from a measurement result of the plurality of the magnetic sensors,
- calculate an absolute thickness of the pipeline in the measurement region from a measurement result of the ultrasonic sensors, and
- calculate an absolute thickness distribution of the pipeline in the measurement region, based on a combination of the relative thickness distribution and the absolute thickness.
A pipeline monitoring system comprising:
- a plurality of sensor devices, each of which includes:
- a plurality of magnetic sensors arranged to face an outer circumference surface of a pipeline;
- and
- ultrasonic sensors arranged to face the outer circumference surface and measure a thickness of the pipeline in a measurement region in which the plurality of magnetic sensors measure a magnetic field, a number of the ultrasonic sensors being less than a number of the plurality of magnetic sensors;
- and
- a calculation device arranged to:
- calculate a relative thickness distribution of the pipeline in a mounted region of the sensor devices from a measurement result of the plurality of magnetic sensors,
- calculate an absolute thickness of the pipeline in the measurement region from a measurement result of the ultrasonic sensors, and
- calculate an absolute thickness distribution of the pipeline in the measurement region, based on a combination of the relative thickness distribution and the absolute thickness.
Dependencies are inferred from the claim text.