Indoor Led Garden in-depth Demand Report

1, the lead words
with the maturity of led technology, led have developed all sorts of color, also in a dramatic drop in cost.

The output current is more than 300 ma LED driver circuit common inductive switch power supply and linear power supply drive way, useful also switch power supply and linear power driven joint way.

Almost not to play in the linear power drive circuit and ripple, little interference on the circuit used in occasion of high electromagnetic compatibility requirements.


more mixed color color color LED backlight technology is a hotspot of current research.

As early as in 2000, Japan has produced many chip type LED backlight products.

Then, the company launched in many type of LED chip for high-performance LCD backlight.

But the specific how to mix colors complementary, open literature now exist are few in number.


although the three colors red, green and blue leds produce a backlit wide color gamut, but red edge phenomenon exists.

This paper USES white light-emitting diodes (leds) as the main light source, and then use orange light and blue light as complementary illuminant, get out of the game screen white color temperature in (
6 500±100)
K, u 'color coordinates in 0.
198±0.
01, v '0.
468±0.
Standard densities within 01.


2, compensation circuit diagram
white light leds are in blue inspired $phosphor for white light, due to the LCD panel for shortwave component attenuation than the long wave components, so the white light LED light the screen after the color yellow, need both blu-ray, as well as red light.


in the case of a typical current 20 ma, room temperature orange lamp voltage is 2 v, blue lamp voltage is 3 v, white lamp voltage is 3 v.


3 kinds of lamp are 8 a string.

Orange light in a typical work under the current situation of you just need to about 16 v, the linear constant current source driving circuit efficiency is less than 60%, due to the orange lamp is complementary, and therefore the largest loss of power is less than 1 w;

White light and blue light of linear power efficiency more than 85%.


3 kinds of LED lights with linear constant current source driving all the way, each road set the sum current 200 ma, ensure each string of LED lights is the typical current 20 ma, as shown in figure 1.

Each line of constant current source USES the same frequency PWM dimming signal independently, their frequency is fixed, SuiDiao brightness change with the different space time.


with FPGA as controller, dimming instructions according to the upper machine adjust the PWM duty cycle, so as to control the backlight brightness;

Sample color sensor data, fine-tuning the orange light and blue light of the PWM duty cycle, ensure that the temperature change colour temperature is constant.



3, PWM dimming and complementary
3.

1 orange light and blue light complementary preparations before

figure 2 for the white light and the PWM dimming waveform figure of complementary color lights.

Should guarantee the driver circuit to meet the following conditions:
(
1)

Should be able to ensure that the LED constant current drive voltage required for the voltage output;
(
2)

Drive circuit output current should have consistency on the conduction time, so that we can accomplish linear brightness adjustment;
(
3)

In daytime mode, white light should gradually increases, and the complementary color of blue light and orange light should be according to the proportion of white light change gradually increased.


figure 2 white light and PWM dimming waveform figure of complementary color lights.

　　3.
2 in the SS -

230 flat-panel display system comprehensive analysis instrument on mix light figure 3 for SS -


230 photos of flat-panel display comprehensive analysis system.

Experiment, and the white light from low light to high brightness, orange light and blue light also gradually increase in proportion, guarantee that the color temperature (
6 500±30)
K, color coordinates u '= 0.
198年,v′= 0。
468.

Records from low to high brightness light brightness, white light, orange light and blue light dimming PWM waveform of the lasting period of high level data, records a total of 40 sets of data.



figure 3 SS -
230 flat-panel display comprehensive analysis system.

　　3.

3 data fitting
according to the record of 40 sets of data, can be concluded that under the condition of different brightness of three kinds of lamp dimming PWM high level of time.

Fitting out under the three light dimmer high level time and the relationship between the brightness, as shown in figure 4.


in figure 3 three continuous curve expression is as follows: figure 3,


4 brightness and three kinds of lamp dimming series relationship.

type (
1)

L is brightness, W, O and B are white light, orange light and blue light PWM waveform high level time series, dimming cycle is 500 mu s, high level time series is (
7FFF)
16 = (
32, 767)
Level 10.

　　3.

Closed-loop control
4 color according to get fitting curve, the backlight and constant temperature and do the fitting curve of backlight under the condition of temperature, within the range of brightness adjustment can be standard white light source.

But to ensure that the backlight LED constant temperature is impossible, as the LED temperature change, white light, orange light and blue light attenuation is not the same, color temperature drift phenomenon.


record color sensor in 200 that move light cycle, namely 100 ms, red, green and blue three color components of the output pulse number, these data as the brightness of the three color component values.


when the temperature changes, according to the color of sensors measure the red, green and blue three color brightness data, fine-tuning the orange light and blue light of the PWM waveform high level time, make the red, green and blue three color brightness ratio is constant, the temperature remains constant.


4, 'theory of
in the SS -

230 flat-panel display system on the comprehensive analysis instruments, from low to high brightness brightness changes measured 40 points, adjust PWM pulse high level of the three kinds of light time, get a standard white light source.

Then USES the linear fitting brightness under different conditions are obtained by 3 kinds of lamp of PWM waveform in proportion to the duration of high level relationships, according to the relationship between the dimming can ensure that the entire brightness range back light source is the standard pigments.

According to the output of red, green and blue color sensor 3 color channel data, fine-tuning the orange light and blue light of PWM high level time, maintain the red, green and blue three color channel data connection between the proportion of color temperature constant.
Using the above way to get out of the screen white color temperature at (
6 500±100)
K, u 'color coordinates in 0.
198±0.
01, v '0.
468±0.
Standard densities within 01.

High solar street light lamp: 5-12 meters material: steel pipe treatment + + hot dip galvanized, plastic spraying solar modules: high-efficiency monocrystalline silicon/polycrystalline silicon thin film panels power: the service life of the 60-300 - w: 25 years illuminant: the super bright high-power LED power:




the solar street lamps

Solar street light is a crystalline silicon solar battery power supply, valve control type sealed and maintenance-free battery (
Gel battery)

Store electricity, super bright LED as light source, lamps and lanterns and controlled by the intelligent charging and discharging controller, is used to instead of the traditional public power lighting lamps.
】
High light: 5-12 meters & NBSP [

BSP is the abbreviation of English Blog Service Provider, is Chinese Blog Service host.
】
;


material: steel tube treatment + + hot dip galvanized, plastic spraying
solar battery components 【

Solar energy battery components is of high efficiency crystalline silicon solar cell lines of toughened glass, super white cloth, EVA, transparent TPT backboard and the composition of aluminum alloy frame.
】

: high-efficiency monocrystalline silicon/polycrystalline silicon thin film panels power:

60-300 - w: service life of 25 years
light source: the super bright high-power LED
power: DC12V / 24 v, the service life of the 15 w to 80 w
:
50000 hours of battery: lead-acid battery/buried colloid sealed and maintenance-free battery
capacity: DC12V 60 Ah - 400 Ah & n BSP; street lamp controller


control system, microcomputer intelligent control, prevent overcharge, discharge, moistureproof, output short circuit protection and optical + control automatically open, turn off the light when you
solar street lamps use environment: -

30 ℃ to 60 ℃
time lighting: lighting 8 to 12 hours a day, can be continuous lighting 3-5 rainy day.

-
-


in recent years thanks to the LED technology matures, now the LED street light energy conservation, environmental protection and service life has done well, overall sales of LED street lights are also increased year by year, a very short period of time from a lot of street lamp technology company these middlemen, dealers, they often street lamp manufacturers to buy from us, resell to others.

So street lamps manufacturer directly supply LED street lamp is a great advantage.

Mainly include:


one, from the street lamp manufacturers direct supply LED lights price will be much cheaper, because there are no middlemen, save this link, buy it direct factory price, the price has a big advantage.


2, street lamp manufacturers, there are relative to the dealer post-sale service guarantee, a guarantee of a professional technical personnel maintenance process problems in the process of product use.


the three can provide a variety of models of street lamp, street lamp manufacturer.

Some dealers the single product, and manufacturers can give customers more LED lights models of choice.




all in all, street lamp manufacturers direct supply LED street lamp is a big advantage, no matter from the price or the quality and after the three main conditions, but directly from the manufacturers to buy LED lamp or going to the on-the-spot investigation, because now a company with many, cut corners phenomenon is very serious, field visits to determine these manufacturers are normal manufacturer, is there a qualification, product testing certificate qualification documents, such as the manufacturer is the formal manufacturers, buyers can rest assured to buy, after all normal street lamp manufacturers want to long-term development, not to cut corners poor after-sales services.

In rural areas, most of the use of street lamp request is not high, in the market, the absence of regulation, cause in the new rural areas, the low quality of solar street lights will be flooded, there are some bad solar street light will appear shoddy, low-cost evil



vigorously promote the new rural construction, to say the new rural areas become the main market of solar led street light, and the potential of this market is still relatively large, because the solar street light is very suitable for rural areas, but for many rural solar led street lamp is unified by the government procurement, in some remote areas, there will be some poverty alleviation projects, the purchase and use of the user is not the same group, so in this case, what are the delivery status, macau special lighting small make up today to summarize several points.





in rural areas, most of the use of street lamp request is not high, in the market, the absence of regulation, cause in the new rural areas, the low quality of solar street lights will be flooded, there are some bad solar street light will appear shoddy, low-cost vicious competition, solar led street light into the vast rural areas, the coverage is more dispersed, later it is difficult to maintain security.

Cause problems in the latter period, nobody tube, and let the solar street light can't really play the advantages of it, that will lead to the market is chaotic.



the result is that in many places the solar led street light on one or two years later, the warranty period, and then facing no maintenance problems, lead to unscrupulous merchants without the brand consciousness and social responsibility, so did a few years later, will register the new company, and then continue to disrupt the market, to market solar street lamps is chaos.

For such normal solar street light is unfair, because their bad competition, lead to normal in the market, the work is difficult.

Normal, of course, everyone is approved, such as guangdong Australia, many users are repeat customers, we will only do the conscience of products.
Let users as well as our own benefit.

We may not change the behaviour of others, but we can control your behavior, on the product quality, guaranteed that the after-sale services, continuously improve, welcome to Australia's lighting.

With the hot wave of the Internet of Things and the large-scale opening of smart homes, LED smart lighting will usher in a rapid turn-on period, and LED lighting will open up to a new era of intelligent lighting.



　　 In the red sea of u200bu200bLED lighting shopping malls, it is necessary to dig deep into the opportunities. It is necessary to make full use of the two natural advantages of LED energy saving and dimming, explore the new blue ocean of LED lighting, and pay attention to more subdivided shopping malls, such as LED plant lighting and intelligent control The category, etc., open to a more humane, personalized, artistic and intelligent direction, which is also a big way out.



　　 Especially the customers in some big cities have higher requirements for the day, and they also put forward new requirements for the lighting system of the home environment. They hope that the lighting system can easily complete functions such as punctual switching and random scheduling of light and shade. It is possible to accurately set and manage the illuminance in different environments at different times to achieve energy saving, so as to improve the quality of the environment and ensure the comfort and health of the day. At this time, smart lighting came into being.



　　 Smart lighting has functions such as light brightness scheduling, color temperature scheduling, light soft start, punctual control, scene setting, etc., and meets the requirements of personalization, comfort, secondary energy saving, safety and efficiency, while LED smart lighting is intelligent lighting The best choice for chemistry. The sensor technology, intelligent control technology, wireless communication technology and LED lighting are organically combined to make the lighting system more intelligent. Through wireless communication technologies such as Bluetooth and WIFI, low-cost interconnection between the home LAN and remote network applications can be carried out, and the LED lighting equipment can be connected to portable devices such as i0S or Android system personal computers. The ability to carry out long-distance real-time control further satisfies the lighting needs of different individual and different levels of groups.



　　 In the opening of the future, only enterprises can find their own positioning, including brand positioning, shopping mall positioning, product positioning, etc., only need to be able to make it stronger in a certain area of u200bu200bLED, even if it is parts and accessories. Professional can make a living.