Light-emitting diode lamp illumination system, and dimmer and light-emitting diode lamp thereof

An LED lamp lighting system, comprising:

• a dimmer including an input end electrically connected to a first external power input, the dimmer configured to convert a received external power signal into a dimming power signal based on a dimming command, and the dimming power signal comprising dimming information;
• and
• an LED lamp, electrically connected to an output end of the dimmer and a second external power input, and configured to execute a dimming operation based on a received dimming power signal,
• wherein the dimmer comprises:
• a dimming signal generating module, configured to generate a dimming signal based on the received dimming command;
• a zero-crossing detecting module, electrically connected to the first external power input and the output end of the dimmer, and configured to detect a zero-crossing point of the external power signal and generate a zero-crossing signal;
• a data modulating module, electrically connected to the first external power input, and configured to rectify the external power signal and load the dimming signal onto the external power signal to generate the dimming power signal;
• a filtering circuit, electrically connected to the data modulating module, and configured to filter a received signal to generate a filtered signal;
• a power supply module, electrically connected to the filtering circuit, and configured to execute a power conversion to the filtered signal to generate a power supply signal for use of the dimmer;
• and
• a control module, electrically connected to the zero-crossing detecting module to receive the zero-crossing signal, start to execute the data modulation at a specific time after the zero-crossing, and load the dimming signal onto the external power signal to generate the dimming power signal.