8 kinds of new LED technology applications, what kind do you like?

LED semiconductor lighting network news is awesome Word brother, can serve the high-level dimming program of NASA, have you heard it? Osram 's new broadband infrared LED , from which you can use your smartphone to analyze three meals a day; what is the use of LED lights and hydroponic technology to grow vegetables such as cabbage, lettuce and basil in a 40-foot container in the Arctic Circle? Kind of experience? Is there any good way to extend the best color time of the meat? In order to benefit the welfare of the food, the researchers have made unremitting efforts; smart bulbs will really become a new target for hackers to attack, what should be done? ... so many new and interesting LED related technical information, how to miss it! Now, Xiaobian immediately presents it to everyone.

1. Serving the NASA dimming plan

In order to further meet the needs of the space agency's scientific research work, NASA decided to build a new North District administrative and maintenance center in Cape Canaveral, Florida, USA. Lutron Electronics' intelligent dimming solution helped NASA build the first Zero carbon facilities and a set of highly feasible lighting control technologies for their daily operations. NASA has extremely stringent requirements for energy control and utilization. The North District Administration and Maintenance Center should operate in low-carbon and environmentally friendly conditions to ensure that NASA has the freshest air and the most reasonable lighting here. The challenge for Lutron Electronics is how to integrate the existing technical facilities of NASA and create a smart dimming solution that meets the certification requirements, so that smart dimming technology can be integrated into the space management framework of NASA.

In order to meet the requirements, Lutron provides EcoSystem? Digital addressable dimming ballast product, which uses wireless connection technology to integrate with the lighting facilities inside NASA. It is easy to use and can be reset according to the changes in the workplace and the type of work. . Does the staff only need to operate Pico? Handheld and wall-mounted controllers enable wireless operation of indoor lighting . Wireless control technology not only reduces wiring costs, but also makes control more convenient and faster. Lutron's daylight sensor system automatically adjusts the indoor lighting intensity according to changes in lighting conditions, so even if the staff does not manually operate the dimming system, the indoor artificial lighting intensity will be adjusted as the natural light intensity changes. When the sun shines strongly, the light is dimmed. Lutron’s occupancy sensor can determine if there is any activity in the room. If no one is working, an instruction will be issued to automatically turn off the light.

2. Introduced infrared LED for food analysis

The new broadband infrared LEDs from OSRAM Opto Semiconductors can be used to analyze three meals a day from your smartphone. According to reports, OSRAM applied the phosphor technology to the infrared emitter for the first time, and successfully created an LED that emits broadband infrared light in the wavelength range of 650nm to 1050nm, creating an infrared spectrum technology suitable for the consumer goods market. One of the application options is a compact sensor - similar to a USB memory stick that can be used with the corresponding smartphone app to measure calories, freshness or nutrients. Infrared spectroscopy uses the unique absorption behavior of certain molecular compounds to determine the presence and amount of certain components by the wavelength distribution of the reflected light when the set spectrum is illuminated on the sample. This method is used in the food industry, agriculture, and other industries to measure moisture, fat, carbohydrates, sugar, or protein content in foods. In addition, the data provides an indication of freshness, quality or calories.

The launch of the SFH4735 means that OSRAM Opto Semiconductors has successfully produced the world's first broadband-emitting infrared LED. This component is the ideal source for near-infrared spectroscopy and is ideal for measuring food quality. As the latest research result of OSRAM, it helps the sensor technology to successfully enter the consumer goods field and be used as an add-on component to smartphones. Based on the Blu-ray 1mm2 chip with UX:3 technology, the SFH4735 can be converted to infrared radiation with the help of phosphors developed specifically for this application. The residual blue component in the light will help the user locate the target area he wants to investigate.

The emission spectrum of SFH4735 has a uniform spectral distribution in the infrared range. The chip is mounted in a reliable and compact Oslon BlackFlat package with exceptional heat resistance. Experts predict that in the near future, spectrometers will likely integrate directly into mobile devices. This new technology is a natural extension of biomonitoring and is a measure of various vital signs such as pulse rate and calorie expenditure. With a smartphone spectrometer, users can not only monitor the food they eat in a similar way, but also detect the drug in the same way.

3, LED lights with hydroponic technology in the Arctic circle to grow vegetables

There is almost no tree in the coastal town of Kotzeb in the Arctic Circle of Alaska. In this town, the Innupiart town is so low that even the summer temperatures are so low that plants cannot take root. The local aboriginal NKI subsidiary "Arctic Vegetables" uses LED lights and hydroponic technology to grow a variety of vegetables that do not require soil, such as cabbage, lettuce and basil, in a 40-foot container that is insulated, and has a population of about 3,300. Sold in the community. The local food culture is dominated by hunting and gathering. The challenge is to create a new north of the Arctic Circle (in the Arctic Circle) with the goal of working with other rural towns far from the road; in these towns, the fruits and vegetables may take up to a week to arrive, and the prices are high and not fresh.

Although local methods are used to extend the time available for plant growth, indoor hydroponic techniques allow crops to grow throughout the year. “Vertical harvesting hydroponic cultivation” for indoor hydroponic space. However, the establishment of an indoor hydroponic system is not cheap, starting from $200,000 in Kotzeb, including the cost of custom containers, and the cost of the C-130 transporter from Ankara, 550 miles southeast. The town of Kotzeb relies heavily on expensive diesel power generation and will also affect the profitability of hydroponic farming. Still, hydroponic is worth doing. Hydrogrid is popular. Alaska Business, which has several stores in remote areas of Alaska, has begun selling "Arctic Vegetables" in Kotzeb, and will expand to other stores in the future.

4, LED light to extend the best color time of meat

In fresh supermarkets, consumers often value the color of meat when they choose beef minced meat. A good beef ground meat, its color looks like a cherry-like bright red. Once the beef minced meat is dark, consumers usually don't buy it. This type of meat is not sold at a discount, or it is a reimbursement of the $1 billion in annual lost goods in American supermarkets. In order to find out how to extend the best color time of meat, Jade, a meat science research assistant at the University of Missouri? Cooper and his colleagues recently observed the effects of supermarket fresh lights on the color of beef minced meat. The relevant research works were published in the October issue of the Journal of Animal Science, which explored the lighting of fresh light on meat myoglobin ( The effect of the protein that promotes pigmentation of meat) and lipid oxidation.

In general, retailers use daylight fresh lights, but research has been pointed out that daylighting will raise the temperature of meat and make meat more susceptible to discoloration. In contrast, LED fresh lights not only have high brightness, but also are not prone to high temperatures, are more efficient to use, and have a longer life. According to the US Department of Energy, because of the cost relationship, the current LED light consumption rate is only 5%, but by 2035 the usage rate will increase to 85%, and this change will also reduce the energy consumption rate by 75%. In addition, the fat content of beef ground meat is also one of the parameters affecting the experiment. When the hamburger platters were taken out on the first, third and seventh days, it was found that the hamburger with a 25% fat content was less bloody than the lamp. When consumers are buying beef minced meat, it is necessary to know that the red meat portion of the product with higher fat content is relatively small, so it seems that the color is much lighter.

5, quantum dot LCD TV luminescent materials up to 100-110

According to the "2016-2020 China Digital TV Industry Investment Analysis and Forecast Report", in the first half of 2016, the ratings of cable TV households increased, surpassing 60%. It can be seen that the demand for product quality of smart TVs, especially digital TVs, and users has gradually increased. As TV brands have begun to stabilize in the region, consumers' demand for TV has begun to surface. The quality, appearance and price are the three most important factors. Quantum dots are a kind of semiconductor material, belonging to nano-technology. In the world's cognition, the latest understanding of illuminant materials is LED and OLED, and this new type of quantum dot luminescent material can become the third illuminant material. And its display technology is better than the first two, it can be said that human beings have found the best display technology. In the past, this display technology was always in the hands of Japan and South Korea, and this quantum dot was first mastered by China and has already begun to be put into the practice of industry.

Comparing the quantum dot LCD TV with the ordinary LCD TV, it can be found that the ordinary organic liquid crystal television luminescent material can only reach about 70, and the quantum dot technology can reach 100-110. The LCD TV is divided into 6 layers. The lowest layer belongs to the emission sheet and the light bar, and then the supporting diffusion plate, followed by the uniform film with uniform light, and then the quantum dot diaphragm, which can emit the bottom light bar. The resulting blue light is converted into white light; followed by an incremental composite diaphragm and a film that is attached to the glass to provide an energy-saving effect. According to reports, OLED has inherent defects, instability and short life, energy consumption, and lack of color gamut. The luminescent materials formed by quantum dots have great imagination in the energy saving of society. Of course, this new quantum dot market has really begun, but the production of quantum dots is quite difficult, and ensuring its yield is one of the challenges. In the case of ensuring image quality, it must meet the requirements of manufacturing equipment. It is another big challenge.

6, beware of smart bulbs as the next target for hackers

The times are constantly evolving, and the goals of hackers are constantly evolving. Now they are no longer limited to "black" into your computers and mobile phones. A few days ago, researchers at the Weizmann Institute of Science in Israel demonstrated how to use hackers as smart gadgets to conduct hacking attacks. The researchers drove a drone to fly near a building and then used wireless technology to send malware, the Internet of Things worm. Once the smart light bulb in the building is upgraded by wireless firmware, it will infect the worm and spread to other "neighbors." According to reports, the researchers used Philips Hue smart light bulbs, which have the same appearance as ordinary light bulbs, but can be connected to a wireless network via a bridge, allowing users to set up and control lighting through a mobile phone or computer.

Related researchers said that attacking smart bulbs is not to make it flicker. In the next few years, there will be more and more IoT devices. Attacks like this can be poked like a star fire, thus controlling a region's smart light bulbs, artificially manufactured. The peak of electricity consumption destroys the regional power grid. Therefore, the researchers tried to remind the public through this test demonstration that people will have more and more network security vulnerabilities in their lives. They will also include baby monitors, network cameras, printers, kettles, washing machines, lighting equipment, routers, Surveillance cameras, etc.

7. LED interactive ground in the sunken square of Wujiaochang

If the Wujiaochang business district is regarded as a big shopping mall as a whole, then the sunken plaza is the traffic atrium of this shopping mall. After three months of renovation, the 4108 square meter Wujiaochang Square central area has been officially opened to the public. According to reports, after the renovation of the sunken plaza, the number of venues has increased greatly, the central square has built an interactive ground, and under the green pool and landscape essays, the "small egg" has become a brand new "city hall." One of the highlights after the renovation is undoubtedly the LED interactive ground of the central block of the square. The designer makes full use of the interactive ground to render the atmosphere of the space, showing the map and customs of Yangpu. The surrounding lights show the style of Yangpu Riverside. The interactive ground is still being laid and commissioned. More importantly, with the help of the intelligent and humanized diversion system, the citizens of the Wujiaochang said that they are no longer afraid of "walking the wrong corner".

The five channels of the sunken plaza after renovation have adopted the design of “one gallery and one color” in appearance. The five commercial bodies cooperate with the respective corporate logos to correspond to five colors: orange Wanda Plaza, red Bailian Festival City, yellow The Heshenghui, the purple oriental commercial building, the blue Suning Appliance. In the past, the wall display in the business district relied on large posters, and the display interface at the ground junction was not utilized. Today's five-lane corridors are lined with large LED screens that showcase the advertising and event content of the business district. In addition, the five exits use a three-level guide and a wall marking. Walking in a channel full of science fiction is like crossing a time tunnel. The pattern is perforated aluminum plate between the LED screens, and the main color of the gray-white system fully reflects the digital characteristics of the science and technology Yangpu.

8. A novel method to fill the green and yellow difference of white LEDs

Researchers at the King Abdullah University of Science and Technology in Saudi Arabia and the Old King Technology City have proposed a novel approach that can fill the "green-yellow" common in multi-fluorescent-based white LED applications due to poor conversion efficiency. "g"" (green-yellowgap). A research paper published in the journal ACSPhotonics describes a nanowire LED (NWLED) emitting at 588 nm that can be grown on a low-cost titanium (Ti) thin film/germanium (Si) substrate platform compatible with CMOS processes. Its tight nanowire layer can grow up to 9x109cm^? The surface density of 2 has a fill factor of 88%. Each nanowire pin LED structure is embedded in an active region of a stack of 5 layers of 3 nm thick InGaN quantum discs (Qdisks) separated by 10 nm quantum barrier layers.

When operating the yellow-light nanowire LEDs alone, the researchers observed a peak emission of 588 nm and a low on-voltage of about 2.5 V at 29.5 A/cm^2 (about 75 mA on 0.5x0.5mm^2 components). The quantum efficiency is about 39%, and the "efficiency reduction" does not occur until the implantation density of 29.5 A/cm^2 is reached. Next, the researchers showed the benefits of mixing this yellow light with red, green, and blue laser diodes. In the actual setup, the RGB beam is used to illuminate the yellow nanowire LED, just like a phosphor, and a light scattering layer is used in the reflective configuration to add its yellow emission to the white light mixture. The result is a correlated color temperature of approximately 6000K and a color rendering index of 87.7. The goal of this approach is to reduce the intensity of blue light in white light, creating a warm white light that is more friendly to the human eye, while providing a new way to tune color temperature for laser-based solid-state lighting (SSL).