Method and system for collective control of lights

A system for collective control of lights comprising a main control device (1) and a plurality of lights (2), characterized in that:

• the system further comprises a plurality of auxiliary control devices (3) a number of which is equal to that of the lights (2), each said auxiliary control device comprises a transducer (31), an amplifier (32), a decoder (33), and a switch device (34) that are electrically connected in sequence, a main portion of a circuit of the switch device (34) is electrically connected to an associated one of the lights (2) or electrically connected via a switch device having a larger power to the associated one of the lights (2);
• the main control device (1) comprises a central processor (11), an input/decoder (12), an encoded control signal generating circuit (13), and a main amplifier (16), the input/decoder (12) and the encoded control signal generating circuit (13) are electrically connected to the central processor (11), the encoded control signal generating circuit (13) is electrically connected to the input/encoder (12) and the main amplifier (16);
• a positive output and a negative output of the main amplifier (16) are connected with each other by a wire to form an output circuit (4), the transducer (31) is coupled with the wire of the output circuit (4), a code number for the light (2) to be controlled is input via the input/encoder (12) to the central processor (11), the central processor (11) controls the encoded control signal generating circuit (13) to generate and output an encoded control signal, when the encoded control signal passes through the wire of the output circuit (4), the transducer (31) of the auxiliary control device (3) in association with the light (2) to be controlled generates a corresponding encoded control signal that is amplified by the amplifier (32) and output to the switch device (34) after decoding by the decoder (33) to control on/off of the switch device (34), thereby collectively controlling on/off and/or current magnitude of each of the lights (2).