LED driving apparatus capable of adjusting illumination

A LED drive and illuminance technology, applied in lighting devices, light sources, electric light sources, etc., can solve the problems of high power consumption and low lighting energy efficiency

Inactive Publication Date: 2016-04-13
CHENGDU HONGSHAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional lighting has problems such as low lighting energy efficiency and high power consumption, and cannot collect changes in indoor illuminance for adjustment, so as to realize indoor constant illuminance dimming

Method used

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  • LED driving apparatus capable of adjusting illumination
  • LED driving apparatus capable of adjusting illumination

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Experimental program
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Effect test

Embodiment 1

[0015] like Figure 1-2 As shown, the present invention includes a current regulating device, a processor, an LED drive circuit and an LED lamp connected in sequence, and an illuminance sensor is also connected between the output terminal of the LED lamp and the current regulating device; the current regulating device is pulse modulation dimming device or current regulator.

[0016] Since the brightness of the LED is proportional to the working current, the luminous brightness of the LED can be adjusted by adjusting the working current. When using it, first set the illuminance of the LED light, and then the LED light starts to work. At the same time, the TSL2561 illuminance sensor continuously collects illuminance and feeds it back to the PIC16F690 processing chip, and performs corresponding algorithm processing through PIC16F690, and this algorithm processing is a relatively mature technology, outputting PWM waveforms that change with the illuminance, and driving through a dr...

Embodiment 2

[0018] This embodiment is preferably as follows on the basis of Embodiment 1: LED drive circuit includes NCL30160 chip, resistor R1 is 0.56 ohms, resistor R2 is 100 kohms, resistor R3 is 200 kohms, resistor R4 is 0 ohms, capacitor C1 is 10 Microfarads, capacitor C2 is 47 microfarads / 35V, diode D type is MBR230 and inductor L1 is 47 mA, one end of resistor R1 is connected to port 1 and port 2 of NCL30160 chip at the same time, and the other end of resistor R1 is connected to port 3 of NCL30160 chip ; Resistor R2 and resistor R3 are connected in parallel, and the two ends of the parallel connection of resistor R2 and resistor R3 are respectively connected to port 4 and port 5 of the NCL30160 chip, and capacitor C2 is also connected between port 3 and port 4 of the NCL30160 chip, and port 3 of the NCL30160 chip and capacitor C2 are both grounded; between port 8 and port 7 of the NCL30160 chip, resistor R4 and diode D are connected in series in sequence, the anode of diode D is con...

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PUM

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Abstract

The invention discloses an LED driving apparatus capable of adjusting illumination. The LED driving apparatus comprises a current adjustment apparatus, a processor, an LED driving circuit and an LED lamp connected in sequence, wherein the an illumination sensor is further connected between the output end of the LED lamp and the current adjustment apparatus; and the current adjustment apparatus is an impulse modulation dimmer or a current regulator. Through the above principle, the LED driving apparatus can collect indoor illumination through the illumination sensor, and can process the illumination for realizing constant-illumination light dimming indoors.

Description

technical field [0001] The invention relates to the field of illuminance adjustment, in particular to an LED drive device with adjustable illuminance. Background technique [0002] Light-emitting diodes (LEDs) have been around for many years, and with the latest technological advancements, they are becoming serious contenders in the lighting market. The new high-brightness LEDs have a long life (about 100,000 hours) and high efficiency (about 30 lumens / watt). Over the past thirty years, the light output brightness of LEDs has doubled every 18 to 24 months, and this growth momentum will continue. This trend is called Haitz's law, which is equivalent to Moore's law for LEDs. Electrically, LEDs are similar to diodes in that they conduct electricity in one direction and have low dynamic impedance V-I characteristics similar to conventional diodes. In addition, LEDs generally have a rated current when they are safely turned on (the rated current of high-brightness LEDs is gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00H05B45/40H05B45/10Y02B20/30
Inventor 张远香
Owner CHENGDU HONGSHAN TECH
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