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dali dimming control circuit

A dimming control circuit and circuit technology, used in light sources, electric light sources, electrical components, etc., can solve problems such as poor electrical performance, inability to control standby power consumption, and inability to judge lights, to improve electrical performance, reduce output voltage, Reduce the effect of afterglow

Active Publication Date: 2019-09-06
XIAMEN YADE ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above intelligent control DALI dimming control device can only simply perform overvoltage protection, cannot judge lamp failure, and cannot control standby power consumption. There is also persistent afterglow, and the electrical performance is poor.

Method used

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Embodiment 1

[0044] Please refer to Figure 1 to Figure 5 , Embodiment 1 of the present invention is:

[0045] A DALI dimming control circuit is used to be electrically connected with an LED drive circuit, the LED drive circuit includes a series LED power supply 5, a switch 6 and an LED lamp 7, and the DALI dimming control circuit includes a microcontroller 1, a current detection Circuit 2, voltage detection circuit 3, DALI communication circuit 4, first operational amplifier, rectifier filter, second operational amplifier, first diode and first resistor; the microcontroller 1 is a single-chip microcomputer.

[0046] The microcontroller 1, the rectifier filter and the first operational amplifier are electrically connected in sequence, and the first operational amplifier is used to electrically connect the current feedback circuit 51 of the LED power supply 5 and the voltage feedback circuit 52 of the LED power supply 5 respectively, so The current detection circuit 2, the second operation...

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Abstract

A DALI dimming control circuit for electrical connection with an LED drive circuit, the LED drive circuit includes a series LED power supply, a switch and an LED lamp, the LED power supply includes a current feedback circuit and a voltage feedback circuit, and the DALI dimming control circuit includes a microcontroller , a current detection circuit, a voltage detection circuit and a DALI communication circuit, the microcontroller is electrically connected to the current detection circuit, the voltage detection circuit and the DALI communication circuit respectively, and the current detection circuit and the voltage detection circuit are respectively used to communicate with the output terminals of the LED power supply For electrical connection, the DALI communication circuit is used for electrical connection with DALI external equipment, and the microcontroller is used for electrical connection with the current feedback circuit, voltage feedback circuit and switch respectively; the microcontroller is used for judging whether LED failure occurs according to the output current of the LED power supply , and used to control the LED power supply to reduce the voltage output if the DALI shutdown signal is received.

Description

technical field [0001] The invention relates to the technical field of LED driving, in particular to a DALI dimming control circuit. Background technique [0002] DALI (Digital Addressable Lighting Interface, Digital Addressable Lighting Interface) dimming is an emerging technology with rich functions that can meet the digital control of LED lights. It occupies an important position in the future intelligent home and has a good market Prospects. [0003] At present, there are many DALI dimming products on the market. For example, the Chinese patent with the publication number CN 203104871U proposes an intelligently controlled DALI dimming control device, including a DALI signal input module and a DALI dimming control module connected thereto. An input signal overvoltage protection module is connected between the control modules, and the input signal overvoltage protection module includes an input signal voltage detection unit for detecting the signal input voltage of the D...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/14H05B45/58H05B45/40H05B45/50
Inventor 卢凯郑榕龙江华荣吴志民郭文斌
Owner XIAMEN YADE ELECTRONICS TECH
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