| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an abnormal signal monitoring device capable of detecting an abnormality of equipment immediately after the abnormality occurs and specifying a section where the abnormality occurs. SOLUTION: An optical fiber 3 having many cores and composed of a plurality of optical fibers 3a, 3b,... is stretched around in the vicinity of a power transmission line 1 stretched around among a plurality of steel towers 2a, 2b,..., separate steel towers 2a, 2b,... are allocated to a plurality of optical fibers 3a, 3b,..., respectively, and they come into contact and are fixed mutually. Moreover, light from a plurality of light sources 6a, 6b,... is individually emitted in a plurality of optical fibers 3a, 3b,.... On the other hand, at a monitoring station, a terminal of the optical fiber 3 having many cores and stretched around on each steel tower 2 is led, and optical fibers 8a, 8b,... having a smaller diameter than that of individual optical fibers 3a, 3b,... are connected with the optical fibers 3a, 3b,... as a space filter, respectively, and are connected with a signal processing part 10 through detectors 9a, 9b.</p> |
