Light control system using power line communication

PURPOSE: A lamp control system using power line communication is provided to reduce installation costs by designing the system as a distributed processing structure without a central control device. CONSTITUTION: A lighting device(200) emits a light with the illuminance corresponding to the lamp drive voltage. A distribution control device controls the lighting device in one to one correspondence without being controlled by outer devices. The distribution control device is connected to an individual lamp controller(100) through an AC power line. The distribution control device controls the AC power line according to a determination result and outputs a target illuminance signal. [Reference numerals] (110) Sensor unit; (111) Thermo file; (112) Motion sensor; (113) Illuminance sensor; (120) Power line communication module; (130) Dimmer; (140) Lighting device driving unit; (150) Charging unit; (200) Lighting device; (310) First power line communication module; (320) Second power line communication module; (330) MCU; (340) User switch; (350) Relay; (360) First filter; (370) Second filter; (380) AC/DC converter; (AA) Central controller