Guide to Buy Top Led Lights in ALLTOP Lighting

'China Building Materials Network' kicked off the large-scale popularization of LED lamps around the world in 2011, this has inspired thousands of LED lighting manufacturers in China in the Nuggets green lighting revolution-because a huge market is about to open, and this time the protagonist is Chinese manufacturers.
If LED lamps are to be popularized, it not only needs to greatly reduce the cost, but also needs to solve the problems of energy efficiency and reliability. How to solve these problems, let's share three suggestions on the design of high-efficiency and high-reliability LED lamps.
Do not use bipolar power devices Douglas Bailey pointed out that because bipolar power devices are cheaper than MOSFET, usually about 2 cents, some designers use bipolar power devices in order to reduce LED driving costs, this will seriously affect the reliability of the circuit, because with the increase of the temperature of the LED drive circuit board, the effective working range of the bipolar device will be rapidly reduced, this will cause the device to fail when the temperature rises, thus affecting the reliability of LED lamps. The correct way is to choose MOSFET devices, whose service life is much longer than that of bipolar devices.
Try to use integrated MOSFET if the designed LED lamp power is not very high, Doug suggests using LED driver products with integrated MOSFET, because the advantage of doing so is that the on resistance of integrated MOSFET is less, the heat generated is less than that of discrete MOSFET. In addition, the integrated MOSFET is a controller and FET together, which generally has overheating shutdown function, when MOSFET is overheated, it will automatically turn off the circuit to protect LED lamps, which is very important for LED lamps, because LED lamps are generally small and difficult to dissipate air.
Sometimes LED Burns and hurts people due to overheating, but our plan has never been like this. He said.
Try to use a single-stage architecture circuit Doug means that some LED circuits adopt a two-stage architecture, namely PFC (Power factor correction)
The architecture of isolated DC/DC converter will reduce the efficiency of the circuit.
For example, if the efficiency of PFC is 95 and the efficiency of DC/DC is 88, the efficiency of the whole circuit will be reduced to 83. 6! LinkSwitch of PI-
The PH device integrates PFC/CC controller, a 725VMOSFET and MOSFET driver into a single package at the same time, improving the efficiency of the drive circuit to 87!
Doug pointed out that such devices can greatly simplify the layout design of circuit boards, and can save 25 components used in traditional isolated flyback design!
The omitted components include high-voltage large-capacity electrolytic capacitors and Optocouplers.
Doug said that the LED two-stage architecture is suitable for old drivers that must use a second constant current drive circuit to enable PFC to drive LED constant current.
These designs are outdated and no longer cost-effective, so single-stage designs are preferred in most cases.

Jiangxi yingtan city stadium is located in the middle of the dragon avenue in jiangxi province, is located in the center of the city sports center, the area 6079 square meters, construction area of 12425 square meters, the construction scale of 4500 seats, architectural layers for 1 floor underground, the ground layer 3, total 22 meters high, subject to the framework structure.

Building exterior grand atmosphere, overall modelling way resembles a movement of the planets in space, the movement breath rich capsule.

Roof with crescent large-span pipe truss, the whole structure is simple and light appearance, reasonable force, force intuitive, like a bright light flying wing of light in the darkness.

Project panorama


project design and implementation difficulties in yingtan stadium is a has been built in jiangxi province, the only tube truss roof of the stadium.

Designed to 'fly' and 'together' as the theme, harmonious enterprising spirit of sports.

Using LED project-light lamp light esau venue at the top of the wave plate, on the beautiful skyline, linear beam with building corridor, pillar and elevation of the light, make building more sporty and administrative levels.



for rendering venue atmosphere, using LED colorful light source illuminating light roof, like an eagle in the sky fly freely, sending out the movement and the passion of life.

In the hazy night, dream of the LED light color changes, to shape plain building during the day the top into a beautiful beautiful scenery line, fusion building the base of the building wall lamp is concise, atmospheric period flavor reflect incisively and vividly.



for rooftop area is larger, so for the high demand for lamps and lanterns of lighting area, to implement long-distance high brightness light, will be the venue of the whole tile surface light, washing and waste can't have too much light, this requires a single phone to cast light lighting distance of lamp can reach 40 meters away.


project solution according to the effect of demand, the product application finally chose 324 WRGB full-color high-power cast light, and DMX512 controller system, all by bright beautiful collection of independent research and development production.

Lamps and lanterns is installed on the top of the wave in the gym eaves, lamps and lanterns is installed between the distance of 1.

5 meters, chooses the high-power cast light projection distance of 50-80 meters, a total of 202 sets, can accurately realize the design effect.



DMX512 controller, a single set of 65536 data, output can be controlled more than 20000 sets of full-color LED lamps and lanterns, greatly simplifies the construction site of the wiring way, save the cost of wiring, reduce the occurrence of fault point, improve the reliability of using process.

Through DMX control system to control the color change of the high power RGB color changing project-light lamp, make the gym in the night sky show clever and delicate balance.

Through the lighting effect of the optimization and control mode of setting, the simple sense of the building facade high technology and strong strength, perfect deduce and better meet the functional requirements.



main equipment: (
1)

F580RGB high-power project-light lamp, 202;
(
2)

DMX512 full color control system, 2 sets;
(
3)
Signal amplifier, 12 sets.



edit: Sophy

From the point of development in recent years, as the country to the increasingly higher requirements of environmental protection, new energy has been widely used, especially in the photovoltaic (pv) and distributed energy generation capacity has already begun to replace the old energy in the proportion in the energy structure in our country.

According to China's relevant


from the point of the development of recent years, with the constant improvement of the national requirements for environmental protection, new energy also has been widely used, especially in the photovoltaic, distributed energy generation capacity has already begun to replace the old energy sources such as the proportion of the energy structure in China.

According to China's relevant industrial policies, the country's government actively encouraging attitude to the development of photovoltaic industry, support grid photovoltaic power generation.
Relevant preferential policies has been introduced.

To build a distributed grid photovoltaic power station system can better impact on the environment, save energy and reduce emissions.

Design scheme of distributed photovoltaic (pv) grid power generation system need standardization and normalization.

Not only to ensure that the distributed photovoltaic (pv) grid power generation system can be effectively used, but also improve the efficiency of distributed photovoltaic system, the design scheme of distributed photovoltaic (pv) grid power generation system, protection and prevention, etc.

Therefore, based on the above reason, the analysis of distributed photovoltaic (pv) grid power generation system design scheme is very necessary.

Tools/raw materials:
2 calculators.
Three parameters of the report.
Tape measure 4.
Tape measure 5.

Multimeter method/steps:
1, the capacity of the computing system;
2, determine the panels (
Type, parameters, quantity, etc.
)
；
3.
To estimate the group list of design (
Preliminary estimates the size of the enclosure)
；
4.
Determine the number and size of junction box;
5.
Choose the cable type, quantity and size;

6, choose the type, quantity, size of frequency converter;
7.
Determine the number and size of grid cabinet;
8.
The design of monitoring system (

With or without large LCD, considering power supply)
；
9, determine the component fixed installation form;
10.

Original equipment installation position and quantity system composition:
rooftop solar photovoltaic power station system in general by roof photovoltaic module array, junction box, DC distribution cabinets, low voltage ac cabinets, inverter, step-up transformer, high voltage cabinet and cable, forming multiple connections, inverter, pressure and the grid system.

Photovoltaic array junction box is a kind of solar cell components can be orderly convergence of maintenance, the maintenance of the equipment and lightning protection function.

The device can guarantee in photovoltaic (pv) system maintenance and check more easily separated from the circuit, and when occurrence problem of photovoltaic modules, can avoid as far as possible from the system out of the number of components can be used as the DC side of photovoltaic power generation system facilities.

Photovoltaic array junction box installed on the roof of outdoor photovoltaic modules square area.

Photovoltaic array component in outdoor using mother box for bus after bus, through the cable connected to the computer room of the DC power distribution cabinet secondary bus bus.

DC power distribution cabinet through the cable after the second bus sent to the grid inverter, the DC energy through the grid inverter with ac DC energy can be converted to the network with the same frequency sine wave current, booster after feedback to grid, grid generation effect.

The installation of the pv modules:
crystalline silicon pv module is by a large number of batteries or thin-film batteries, when installed on the roof, the received solar radiation can be converted into electricity.

Due to the materials research technical barriers, improve the conversion efficiency of solar cells is very difficult.

Installation of photovoltaic components, therefore, is an effective measure to improve the efficiency of distributed grid photovoltaic power station.

Photovoltaic modules should be installed according to the longitude and latitude of the project city, geography, geology, construction direction, combined with field development, make the components as far as possible exposure to the sun.
In addition, the installation mainly decided by the Angle and distance.

In the past few days, when the government work report was reviewed in groups, many NPC deputies have shared the happiness of the past year, but they are also constantly drying new expectations for next year.
Wang Ruiguang, deputy of the Municipal People's Congress and general manager of Changchun Xida company, expressed his two hopes for next year when he participated in the group review of the Chaoyang delegation.
Wang Ruiguang feels that Changchun city has paid special attention to the development of high-tech industries in recent years. Both the main members of Changchun city and the deputies of the National People's Congress have visited their enterprises to do special research and give advice to the development of enterprises. this has enabled enterprises to make rapid progress in innovation and development and have reached a certain height. Some technologies have reached the forefront of the world.
However, as a high-tech industry, time waits for no man. If you have good technology, you must immediately form an industry, otherwise it will be replaced by new technology.
In the government work report, special mention was made to support the LED industry to become bigger and stronger, which further boosted their confidence in the development of their enterprises.
In 2014, they have two hopes, that is, through their own innovation and the government's promotion, LED energy-saving lighting can enter thousands of households and the world's advanced LED super-large TV can enter the market.
Wang Ruiguang said that green and low-carbon home lighting will be the new trend of semiconductor lighting development in the future.
LED entering the era of home lighting has always been a hot topic in the industry, but at present LED lighting can only be regarded as a supporting role in the home market.
Among the problems that need to be overcome, Wang Ruiguang said that it is necessary to speed up the formulation of a civil product standard system suitable for China's national conditions.
At present, in the process of LED lighting products entering the family, there is no unified standard for the quality and price of the products. The product form and quality on the market are uneven and lack of standard constraints.
Therefore, it is hoped that the industry can organize enterprises to formulate unified standards as soon as possible and carry out standardized management so that LED lighting products can develop in an orderly and healthy manner for a long time.
Secondly, it is necessary to speed up the design of semiconductor lighting lamps with LED characteristics.
He said that at present, LED lighting has entered the home, and it is mainly based on alternative lighting. It uses the advantages of LED light sources to squeeze into the general lighting market with the shape of traditional lamps. This is a transitional form.
In order to give full play to the advantages of LED lighting, the design and development of lighting lamps, light-transmitting materials, heat dissipation materials and control power supply suitable for LED should be accelerated.
Speaking of another dream, it is to make it possible for the real LED oversized TV to enter the market.
Wang Ruiguang said that when it comes to TV, many people will think of led LCD TVs, but in fact, this product is not a real led TV.
In LCD TV, LED is LCD TV backlight (The light emitted by the LED is emitted from the LCD TV)
The real led TV is a TV that uses LED as a imaging device. The picture is of higher quality, the theoretical life is longer, the production process is more environmentally friendly, and the use is more energy-saving.
According to the current technology of LCD TV, if you want to make a 100 inch-inch large screen TV, it will cost about 500 thousand yuan, which is costly and technically difficult;
Now, they have achieved a technological breakthrough, making LED oversized TVs at a cost of 30-
50, and the effect is better, so the real led TV will bring more benefits to users and will certainly have a broader market prospect.

The IPO has been delayed, and our planned investment projects will be ruined.
A person in charge of a company that is planning a company's listing has complained to the Securities Times reporter.
Today, the-share IPO barrier lake is huge, 830 companies to be listed are in a long queue, and LED companies with overcapacity are facing a dilemma.
According to the Securities Times, the past few years have been good, the performance has been rising, the financial report looks beautiful, in line with high growth indicators, and the earnings per share are high, the stock can also sell a good price.
Now the industry is entering an adjustment period, and it is difficult for listed companies to guarantee performance growth, let alone high growth for companies like us that do not have financial advantages. The CEO of the LED company said.
In recent years, with the promotion of the government's energy conservation and emission reduction policies, local governments have launched energy-saving projects, and the LED industry has gained a share.
LED enterprises, large and small, have sprung up all over the country. Some powerful enterprises have taken advantage of the opportunity to land in the capital market, and the LED sector in the-share market has grown rapidly.
However, in the past one or two years, due to the overheated investment in the early stage, the fierce homogenization competition, and the price war, the whole industry has entered the era of low profit.
Most LED enterprises began to show a downward trend in profits, and even some companies ran away from their bosses and closed down due to the break of their capital chains.
Even if the listed companies with relatively strong financial strength, the situation is not optimistic.
According to the statistics of the high-tech LED Industry Research Institute, among the 25 key LED listed companies, the revenue in the third quarter of this year increased by 15, accounting for 60% of the total, down 10% from the first half of the year. 83;
Net profit increased by only 10, accounting for 40% of the total.
Among the above-mentioned 25 listed companies, the most serious decline in performance is for upstream chips and downstream display application companies, and the overall performance of midstream packaging companies has also declined slightly. only LED lighting application in the industrial chain can achieve profit growth.
At present, the CSRC has disclosed that there are about 5 LED companies in the queuing stage, most of which are LED downstream application manufacturers.
In addition, there are a number of strong enterprises that have completed the restructuring and are in the counseling period.
The reporter recently participated in an LED industry conference, and more than half of the more than 300 LED companies attending the conference were joint-stock companies.
An industry insider believes that according to the current situation, many LED companies will find it difficult to land in the-share market in the next few years.
However, the impact of listing or not on the individual enterprise and the overall industry is not completely consistent, or even contradictory.
On the one hand, under the circumstance of fierce competition of industry homogenization, only by continuously expanding its own capacity to form scale advantage can an enterprise be in an invincible position. At this time, it is the only way to expand production by raising funds through listing.
On the other hand, enterprises raise funds for expansion through listing, which leads to the expansion of the overall production capacity of the industry and further intensifies competition.
Judging from the current market situation, whether it is the capital market or the company's fundamentals, the listing of LED companies is not a very good time.
Judging from the investment situation of the project, the LED industry is now in oversupply from upstream chips to packaging, which is also conducive to the healthy development of the industry.
Zheng Tiemin, general manager of Shandong Inspur Huaguang Co. , Ltd. said that industry mergers and acquisitions may be a lower-cost alternative to IPO development.
Of course, companies seeking listing status are not entirely for money.
For example, the relevant person in charge of Yuanhui Optoelectronics, who is planning to go public, told the Securities Times reporter that the company's brand has influence in overseas markets, and the overseas business turnover is relatively high. The company plans to list in the mainland to expand the brand influence. seek a place in the domestic market.