LOAD CONTROL APPARATUS BASED ON POWER LINE COMMUNICATION IN GREENHOUSE

摘要

Provided is a PLC-based load control device for controlling a plurality of loads installed in a greenhouse. The PLC-based load control device comprises: a PLC communication unit to perform PLC communications; and a load control unit to control outputs of a plurality of loads installed in a greenhouse according to control signals from the PLC communication unit, wherein the PLC communication unit includes: a noise filter unit connected to an AC power supply to remove noise from inputted AC; a PLC modem unit to communicate with a remote control device, receive a noise-removed signal from the noise filter unit, and extract the control signal from the inputted signal; a central processing unit to process the control signal inputted from the PLC modem unit; an AC/DC converter to convert the AC inputted from the AC power supply into DC; and a power supply unit to supply power to the PLC-based load control device by receiving the DC from the AC/DC converter, and the load control unit includes: a DC/AC inverter to convert the DC output from the AC/DC converter into AC; and a load output control unit to change the AC output inputted from the inverter in response to the control of the central processing unit.