The LED lighting industry is developing rapidly. Under the impetus of China's â€œTen Cities and Ten Thousand Milesâ€ pilot demonstration project, the LED lighting market has emerged. However, the current market prospects for LED development in China are good, but still far from mature. The existing problems are not to be underestimated.
The state has made great efforts to transform the status quo of urban lighting, and strive to create a new urban city in the world of energy conservation and emission reduction. Various localities have also introduced relevant policies to coordinate various tasks. On October 12, 2009, Shenzhen Urban Management Bureau issued the â€œOpinions on Strengthening the Comprehensive Energy-saving Work of Urban Lighting in Shenzhenâ€. It plans to save 5% of electricity consumption per year in urban lighting, and requires a total of 15% of electricity saved in 3 years. Specific measures for energy-saving renovation of urban lighting systems. This allows us to see the government's determination to "energy saving and emission reduction" in urban lighting. We are also inspired by the joy and let us think more about the LED energy-saving lighting work we are doing.
"Systematic" of urban lighting
We are now vigorously promoting energy conservation and emission reduction, that is, energy supply basically meets the needs of national economic and social development, energy conservation has achieved remarkable results, energy efficiency has been significantly improved, structure has been further optimized, technology has achieved substantial progress, and economic efficiency and market competitiveness have increased significantly. Energy macro-control, market supervision, laws and regulations, early warning and emergency response systems and mechanisms that are compatible with the socialist market economic system have been gradually improved, and energy and economic, social and environmental development have been coordinated.
Urban lighting needs to meet the requirements of energy saving and emission reduction, and energy-saving lighting renovation is the key. Energy-saving lighting is a systematic project. We should think more about every aspect of lighting technology from the perspective of â€œsystemâ€. The conclusions drawn are comprehensive and effective, because we need the results of the system, even energy. Coordinated development with economy, society and environment.
The "rationality" of the lighting system
The light efficiency of the LED light source itself is now higher than that of the traditional light source, but if it is the opposite supporting power supply and the light distribution processing of the light is not good, the energy saving of the LED lamp is substantially inconsistent. When we see that there are more than two identical power supplies in the luminaire, or when we design a luminaire with a power supply that is several times the load (light source power), we should consider its "energy saving" and "cost control". Where are we? When we design the floodlights with the lens of the batwing light in the streetlight, we should consider whether the lighting system is really "reasonable" and should be considered as the most commercial operation. How to consider important cost controls.
Let's take a look at the world-renowned lighting companies (such as PHILIPS). Their products, from research and development, production, to application, are all based on the concept of lighting systems. Each of the lamps on the market is classified as a lighting system. A constituent element, like the fruit on a big tree, depends on the growth of the tree. The same reason, the company wants to have a vital product, and the company's rational decision on the lighting system is also very important. The rationality of the lighting products and the quality of the process are important, but it is more important to make rational decisions on the lighting system, so as to improve the efficiency of research and development.
The transition from "small system" to "big system"
LED luminaires are just a "lighting system". To truly realize the lighting function, more LED luminaire combinations are often needed to become a "lighting system" that can be uniformly controlled. In the large lighting system, the arrangement of the lamps (such as the installation direction of the lamps, the installation spacing, etc.), the operation mode (such as the switch lamp time, the circuit configuration, etc.) and the constituent elements (such as LED lamps, system controllers, etc.) are properly selected. Other issues are closely related to the energy-saving effect of LED lighting systems. The energy-saving and rational operation of the "lighting system" is an effective means to improve the company's profits, and it is also the ultimate goal we pursue.
Shenzhen's policy document on road energy-saving lighting, from the perspective of â€œbig systemâ€, comprehensively considers the components of various aspects of energy-saving lighting systems, and is a relatively scientific and reasonable energy-saving requirements document.
The introduction of the document is an absolutely good news for us to engage in LED energy-saving lighting activities. At the same time, we should also clearly understand what kind of products the market needs. How far is our product from the market? Is our technology marketing strategy? In line with the taste of the market? We must also consider systematically, reasonably and comprehensively, and all kinds of problems can be solved.
microwave PCB`s is a type of PCB designed to operate on signals in the megahertz to gigahertz frequency ranges (medium frequency to extremely high frequency). These frequency ranges are used for communication signals in everything from cellphones to military radars. The materials used to construct these PCB`s are advanced composites with very specific characteristics for dielectric constant (Er), loss tangent, and CTE (co-efficient of thermal expansion).
High frequency circuit materials with a low stable Er and loss tangent allow for high speed signals to travel through the PCB with less impedance than standard FR-4 PCB materials. These materials can be mixed in the same Stack-Up for optimal performance and economics.
The advantages of using materials with a low X, Y and Z CTE is a resulting PCB structure that will remain extremely stable in high temperature environments while operating at up to 40 GHz in analog applications. This allows for the effective placement of very fine pitch components including, in some cases, bare die-attach. Additionally, the low CTE materials will facilitate the alignment of multiple layers and the features they represent in a complex PCB Layout.
.CTEr = +40/+50 ppm per Â°C (low); Tg (glass transition temperature) is 280Â°C
.ER = 3.38/3.48 at 10.0 GHz
.ER is constant to 40.0 GHz
.ED (electro-deposited) copper only
.Layer-to-layer thickness control = +/- 0.001
.Fabrication costs are typical to slightly increased
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