Title :
Non-intrusive sensing techniques for the discrimination of energized electric cables
Author :
Mamishev, A.V. ; Short, S.X. ; Kao, T.W. ; Russell, B.D.
Abstract :
The implementation of a piezo-electric acoustic sensor for non-intrusive detection of the energization status of 3-φ electric power cables is presented. Simultaneous excitation of a piezo-electric crystal by acoustic vibrations and electric field may occur. The Fourier spectral analysis of the sensor´s output signal is used to determine the current loading status of the cable. Test results are included for both shielded and non-shielded 3-φ cables. Also, the possible use of an optical fiber interferometer for acoustic wave detection is discussed
Keywords :
Accelerometers; Acoustic signal detection; Acoustic waves; Conductors; Frequency; Optical fiber cables; Personnel; Spectral analysis; Surface acoustic waves; Voltage;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1995. IMTC/95. Proceedings. Integrating Intelligent Instrumentation and Control., IEEE
Conference_Location :
Waltham, MA, USA
Print_ISBN :
0-7803-2615-6
DOI :
10.1109/IMTC.1995.515358
