Patent ID: 11914206
Assignee: FUJITSU LIMITED
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A computer-readable, non-transitory medium storing a program that causes a computer to execute a process, the process comprising:
acquiring a backward Rayleigh scattered light from an optical fiber composite overhead ground wire of an electrical power transmission facility, the electrical power transmission facility including a plurality of steel towers;
generating vibration information of a frequency band including each natural frequency of natural frequencies of the optical fiber composite overhead ground wire of each span of spans of the plurality of steel towers, on a basis of the backward Rayleigh scattered light; and
detecting abnormality of the electrical power transmission facility, on a basis of variation in time of an intensity of each natural frequency,
wherein each natural frequency fluctuates depending on a tension of the optical fiber composite overhead ground wire of each span, and
wherein a fundamental wave and overtones of the fundamental wave appear as each natural frequency in frequency characteristics of the optical fiber composite overhead ground wire of each span.