US 11,815,563 B2
Multicore cable inspection method and multicore cable inspection device
Yohei Shirakawa, Tokyo (JP); and Yoshitake Ageishi, Tokyo (JP)
Assigned to Proterial, Ltd., Tokyo (JP)
Filed by Hitachi Metals, Ltd., Tokyo (JP)
Filed on Feb. 9, 2021, as Appl. No. 17/171,039.
Claims priority of application No. 2020-027315 (JP), filed on Feb. 20, 2020.
Prior Publication US 2021/0263112 A1, Aug. 26, 2021
Int. Cl. H01B 13/06 (2006.01); G01R 31/60 (2020.01); H01B 13/22 (2006.01); H01R 43/28 (2006.01); G01R 19/165 (2006.01)
CPC G01R 31/60 (2020.01) [G01R 19/165 (2013.01); H01B 13/067 (2013.01); H01B 13/22 (2013.01); H01R 43/28 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A multicore cable inspection method of specifying a correspondence relationship among ends of insulated wires exposed at both ends of a multicore cable, the multicore cable being obtained by bundling n insulated wires where n is a natural number of 3 or more and m is a natural number of 2 or more and n−1 or less, the method comprising:
(a) a step of inputting, by capacitive coupling, an inspection signal to an end of a first insulated wire to be inspected among the ends of the plurality of insulated wires exposed at one end of the multicore cable, and inputting, by the capacitive coupling, each of 1st to m-th signals each having a phase different from that of the inspection signal, to the ends of the m insulated wires other than the first insulated wire among the ends of the insulated wires exposed at the one end of the multicore cable; and
(b) a step of measuring a voltage of an output signal outputted by the capacitive coupling from each end of the insulated wires exposed at the other end of the multicore cable, and specifying an other-side end of the first insulated wire based on the measured voltage,
wherein each of the inspection signal and the 1st to m-th signals has the same frequency mutually, and
an amplitude of a signal obtained by adding the inspection signal and all the signals of the 1st to m-th signals are smaller than an amplitude of the inspection signal.