color control system of street lamps using power line communication

摘要

The present invention relates to a streetlight group color control system using power line communication. When a plurality of streetlight controllers control lighting while recognizing whether a light emitting diode and a line are malfunctioning through a current converter and an image current converter, which are not shown on drawings, if the streetlight controllers recognize malfunction or abnormality of the line, the streetlight controllers deliver streetlight information to a main controller through a first PLC transmission part, a power line and a second PLC reception part, thereby simultaneously controlling a streetlight group through power communication. If the main controller recognizes a state where it is currently snowing or raining through a rain sensor, the main controller transmits a streetlight control signal to the streetlight controllers through the first PLC transmission part, the power line and the second PLC reception part, thereby preventing accidents while simultaneously switching the color temperature of the streetlight group. Moreover, since a white light emitting diode array and a yellow light emitting diode array are installed at the same time on one single light emitting diode array for a streetlight, a color temperature can be simply switched due to a state where power is supplied through a switching element.