LED lamp control system based on power line carrier

Abstract

The invention discloses an LED lamp control system based on power line carrier which comprises a 220V power input cable, wherein the input end of the 220V power input cable is connected with an external 220V alternating current power supply; an encoding plate, wherein the output end of the encoding plate is connected with the input end of a 220V power input cable, the output end of the encoding plate is connected with a plurality of power output cables for coupling control signals, and the other ends of the plurality of power output cables for coupling control signals are respectively connected with a group of lamps. According to the system disclosed in the invention, an independent control circuit is omitted and resource usage is reduced; the same lamp control effect as the prior art is achieved; meanwhile, the construction and later maintenance cost of the lamp is greatly reduced, and the brightness and color change of the lamp are controlled while power is supplied to the lamp on a220V power supply link; especially for a brightening modification project, the lamp can be controlled on an original power supply line without new wiring work.

Description

technical field [0001] The invention relates to the technical field of LED lamp control, in particular to a power carrier-based LED lamp control system. Background technique [0002] At present, LED lighting control usually adopts DMX512, DALI, 0~10V control signal to communicate and transmit through independent low-voltage DC signal, and control the brightness and color change of LED lighting after decoding by a dedicated decoding chip or module. [0003] There are two power supply methods for lamps: 220V power supply and DC power supply below 36V. Specifically analyze the shortcomings and defects of these two different power supply methods: [0004] (1) When using the 220V power supply scheme, according to national safety regulations, the low-voltage DC signal control cable needs to be separated from the 220V power supply cable of the lamp. Reflected on the lamp, there will be two input ports and two output ports. The input port is responsible for connecting 220V and co...

AI Technical Summary

Problems solved by technology

[0006] ①, because there are two input and output ports in the lamp, the lamp cannot be miniaturized and has a large volume

[0008] ③ When installing lamps, the 220V and signal control lines need to be wired separately, which requires a large amount of engineering, a large amount of cable resources, complicated wiring, and a high level of professionalism in construction

[0009] ④. When debugging and maintaining the lamps, it is necessary to check two sets of 220V and signal control lines, which is difficult and heavy workload

[0010] ⑤ In order to simplify the design and construction, some schemes combine 220V and control signals into a multi-core cable. This scheme does not meet the requirements of safety regulations and brings great system risks and hidden dangers

[0012] ①, The DC voltage is low, subject to the maximum carrying current of the cable, the total power of the actually connected lamps is small, and the number of lamps in a link is limited

[0014] ③, The DC below 36V is generated by the transformer, and the transformer still needs to input 220V AC, and there are still problems of debugging and maintaining two sets of lines

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