TY - GEN
T1 - Highly sensitive detection of distorted points in a cable by frequency domain reflectometry
AU - Hirai, Naoshi
AU - Ohki, Yoshimichi
PY - 2014/1/1
Y1 - 2014/1/1
N2 - This paper demonstrates that the location in an electric cable where some mechanical distortion appears can be estimated very precisely by a method based on frequency domain reflectometry and inverse fast Fourier transform. A coaxial communication cable insulated by low density polyethylene or a triplex cable insulated with flame-retardant ethylene propylene diene copolymer was distorted at different positions, and electromagnetic waves in a frequency range from one to several hundred MHz or 1.5 GHz were transmitted through the cable. The ratio between the incident power and the reflected power was measured using a network analyzer. As a result, the position in each cable where the distortion was given can be located with a spatial resolution as short as 1.0 cm, which indicates high sensitivity of this method.
AB - This paper demonstrates that the location in an electric cable where some mechanical distortion appears can be estimated very precisely by a method based on frequency domain reflectometry and inverse fast Fourier transform. A coaxial communication cable insulated by low density polyethylene or a triplex cable insulated with flame-retardant ethylene propylene diene copolymer was distorted at different positions, and electromagnetic waves in a frequency range from one to several hundred MHz or 1.5 GHz were transmitted through the cable. The ratio between the incident power and the reflected power was measured using a network analyzer. As a result, the position in each cable where the distortion was given can be located with a spatial resolution as short as 1.0 cm, which indicates high sensitivity of this method.
KW - cable condition monitoring
KW - characteristic impedance
KW - frequency domain reflectometry
KW - inverse Fourier transform
KW - location of degradation
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U2 - 10.1109/ISEIM.2014.6870741
DO - 10.1109/ISEIM.2014.6870741
M3 - Conference contribution
AN - SCOPUS:84906562456
SN - 9784886860866
T3 - Proceedings of the International Symposium on Electrical Insulating Materials
SP - 144
EP - 147
BT - Proceedings of 2014 International Symposium on Electrical Insulating Materials, ISEIM 2014
PB - Institute of Electrical Engineers of Japan
T2 - 2014 International Symposium on Electrical Insulating Materials, ISEIM 2014
Y2 - 1 June 2014 through 5 June 2014
ER -