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A single-fire line low harmonic adjustment method for controlling the brightness of an LED lamp

A technology of LED lamps and adjustment methods, which is applied to the use of semiconductor lamps, electrical components, electroluminescent light sources, etc., and can solve problems such as management troubles, time requirements for switching operations, and high costs

Active Publication Date: 2019-01-04
NANTONG FUQIANG LIGHTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A single-fire line low harmonic adjustment method for controlling the brightness of an LED lamp
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  • A single-fire line low harmonic adjustment method for controlling the brightness of an LED lamp

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Embodiment Construction

[0056] The present invention will be described in further detail below with reference to the accompanying drawings and examples, but the embodiments of the present invention are not limited thereto.

[0057] The device that realizes the method of the present invention such as figure 1 As shown, it consists of a wall control switch unit and an LED lamp adjustment drive unit connected in series. The wall control switch unit has a single live wire AC input and a single live wire AC1 output. The LED lamp adjusts the drive unit, the live wire AC1 enters, and the neutral wire N exits.

[0058] The embodiment circuit of the wall control switch unit is as figure 2 As shown, it consists of single live wire regulator U1, low dropout voltage regulator U2, bidirectional thyristor V1, control microcontroller U4, crystal oscillator XT1, thyristor output optocoupler U3, diode D1, diode D2, capacitor C1, capacitor C2, capacitor Composed of C3, capacitor C4, inductor L1, inductor L2, resis...

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Abstract

The invention provides a single-fire line low harmonic adjustment method for controlling the brightness of an LED lamp. The method is achieved by a device composed of a wall-controlled switching unitand an LED lamp adjusting driving unit. When the brightness is changed, the wall control switch unit sends a brightness control signal composed of a guide waveform and a data waveform to the LED lampadjustment driving unit which adopts phase-shifting trigger control, and the LED lamp adjustment driving unit changes the brightness of the LED lamp according to the 2-bit ternary brightness data in the brightness control signal. When the LED lamp is illuminated and no brightness control signal is sent out, the voltage waveform on the single fire line is a continuous and complete single-phase sinewave. The LED lamp brightness dimming method does not need a remote controller, does not need to lay a control line separately, and does not need to re-lay a power supply line. The LED lamp brightness dimming method has the characteristics of low harmonics, and can realize the substitution and upgrading of a common lighting lamp.

Description

[0001] The patent application for this invention is a divisional application, the original application number is 201510229149.1, the application date is May 8, 2015, and the title of the invention is a single live wire low harmonic adjustment method for controlling the brightness of LED lamps. technical field [0002] The invention relates to a lighting lamp technology, in particular to a single live wire low harmonic adjustment method for controlling the brightness of an LED lamp. 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 efficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCY02B20/30
Inventor 陈刚凌云曾红兵孔玲爽
Owner NANTONG FUQIANG LIGHTING TECH
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