Method for sending LED lamp brightness control signal through single live wire

Abstract

A method for sending an LED lamp brightness control signal through a single live wire is implemented through a brightness wall control unit which is composed of a single-live-wire power module, a rectification and phase shift driving module, a waveform sampling and shaping module, a single-chip microcomputer control module, a trigger control module and a brightness giving module. When the brightness needs to be adjusted, the brightness wall control unit controls and changes the phase shift angle of single-live-wire output voltage waveforms to send a brightness control signal, wherein in the brightness control signal, the brightness level is represented by the number of continuous single-phase sine semiwaves with a specific phase shift angle. The brightness adjustment of an LED lamp is achieved through an LED lamp single-live-wire dimming circuit composed of the brightness wall control unit and a brightness adjustment driving unit, and the brightness adjustment driving unit changes according to the brightness level in the brightness control signal. When the brightness wall control unit sends the brightness control signal, the output end of the single live wire outputs semiwaves with the same phase shift angle continuously, wherein the number of the semiwaves is consistent with the brightness level of the brightness control signal. The method can be applied to replacement or upgrade of common single-live-wire control lighting lamps.

Description

[0001] The patent application for this invention is a divisional application, the original application number is 201510229502.6, the application date is May 8, 2015, and the invention name is a LED lamp wall control dimming method. technical field [0002] The invention relates to an illuminating lamp control technology, in particular to a method for sending a brightness control signal of an LED lamp through a single live wire. Background technique [0003] Due to the nonlinear characteristics of LED lamps, the brightness of LED lamps cannot be realized by adjusting the voltage. [0004] When using a controllable constant current source to adjust the brightness of the LED lamp, the change of the working current will cause the color shift of the LED lamp. At the same time, the load current of the LED lamp becomes very low under low brightness, which will make the controllable constant current source The lower the efficiency and the higher the temperature rise, the greater the...

AI Technical Summary

Problems solved by technology

The LED light control circuit is equipped with a remote control receiving device, and the LED light can be dimmed step by step or steplessly dimmable through the remote control. The disadvantage is that one LED light needs to be equipped with a remote control, resulting in a large number of remote controls and troublesome management. , the cost is also high

However, this method can only provide 4 levels of adjustable brightness of LED lights, and the switch action has a time requirement

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