This paper deals with an implementation of the multi-remote control system of ship's lighting using power line communication to monitor failures, currents, voltages and power consumption of lightings facilities away from the main control center. Therefore routine maintenance is necessary to operate efficiently. However crews maintain regularly a long term and they judge it their eyes. Therefore there is some problem that many number of a lighting, it is many possible error of maintenance's data, and it spend much of time. Therefore the monitoring will be implemented in the main control center where can easily be maintained a state of lighting. The method of communication is the serial communication as RS-232 and RS-485, however this paper will be applied to power line communication that is issued in telecommunications market.
In the power line communication, data is modulated and it is carried in power line. The modulation of signal has several methods as amplitude shift keying(ASK), frequency shift keying(FSK), phase shift keying(PSK), however this paper will be using the ASK. The status data of ship's lighting is modulated and demodulated when communication , the circuit is designed not to affect noise.
The design of remote control system is using Visual C++ in order that a crew easily knows the status of ship's lighting. It is displayed monitoring program when a crew selects ID of lighting and selected lighting is sent current, voltage and power. Each of status data is divided and stored by program, and the remote control program is displayed when a crew wants data of it. And the main control center is lighting control as frequency control by controlling input voltage to the range of 30[%] by adjusting pulse frequency of the half bridge(HB) inverter. And communication data is decided an error according to protocol. This paper is confirmed that the status of ship's lighting can be controled by using a power line communication.