the first power line transmission modem, which is connected with the first power supply processor and the first logic control digital module, and configured to load the dimming signal onto the processed electrical signal, and to send the electrical signal loaded with the dimming signal to the dimming driver.

The dimming driver includes:

a second power supply processor, which is electrically connected with the first power line transmission modem, and configured to convert an input alternating current signal into a direct current signal output;

a second power line transmission modem, which is electrically connected with the first power line transmission modem, and configured to extract the dimming signal output by the first power line transmission modem, and to transmit the extracted dimming signal to a second logic control digital module; and

the second logic control digital module, which is electrically connected with the second power line transmission modem and the dimming luminaire, and configured to output a digital driving signal to the dimming luminaire according to the extracted dimming signal to adjust the gray scale of the dimming luminaire.

The second logic control digital module is connected with an ultrahigh frequency radio frequency antenna, and electric energy and a control signal are transmitted to an illumination sensor through the ultrahigh frequency radio frequency antenna so as to obtain an ambient illumination signal sent by the illumination sensor according to the control signal; the ambient illumination signal is weighted with the dimming signal, according to a calculation result of which the gray scale of the dimming luminaire is adjusted.