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In this paper, PLC which can be installed easily and is stable to transfer datum, is tested for approving its application in a real ship. Internet access s ervice, CCTV monitoring, light control and huge sensor communications are needed for enhancing the convenience and safety of passengers and crew in ships. In order to apply PLC in ships, we surveyed some noises interrupting PLC in ships and investigated the PLC characteristics. The Hannara, a training ship of Korea Maritime University, was used for the test. We measured and analyzed blocking noises using by NI’s SCXI-1001. When noises of specific frequency band occurred near the PLC frequency band, PLC transfer capacity was low for mass datum. We developed and verified some methods to apply PLC in a ship under lots of noises. ※Keywords : Power-line communication( ), Ship(), CCTV monitoring(CCTV ), Sensor() 1.          : 2009 7 6, : 2009 12 30 : scho@moeri.re.kr, 042-866-3431

Ship Tests of PLC and Analysis of Its Signal Characteristics