Patent ID: 11959851
Assignee: YOKOGAWA ELECTRIC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. 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.