제어로봇시스템학회:학술대회논문집

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Fault Detector and Length Measurement of Electric Cables Based on Frequency Waves

  • Chawporn, Talerngkiat (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang) ;
  • Chaikla, Amphawan (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang) ;
  • Sriratana, Witsarut (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang) ;
  • Trisuwannawat, Thanit (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang)
  • Published : 2003.10.22
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Abstract

This research presents an approach to simultaneously detect the faults and measure the length of the electric cables. This approach is easy to use and inexpensive. Moreover, it can be applied to any kinds and sizes of the electric cable. This paper uses 750V $4{\times}4$ Sq.mm. cables. The concept is to send the 2 kHz pulse into the electric cable. When the pulse bumps into the fault, it bounces back. Then, the total time the pulse travels back and forth and the shape of the pulse after bumping are inspected using the pulse detector and pulse converter. Next, the signal obtained is modulated with 10 MHz carrier pulse to segregate into several small pulses before sending to 8-bit counter. The length of the electric cable can be obtained using microcontroller and the location of the faults can be seen on the LCD screen. This approach can be used to inspect the electric cables with the length of at least 15 m.

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