Recently, the United States LightPointe announced that it will set up a new company to study LiFi (visible light wireless communication) technology. This makes LiFi appear again in people's vision. With the wireless communication technology, LiFi compared to our common WiFi technology, what are the advantages and disadvantages? It will replace WiFi in the future has become an indispensable technology in our life? LiFi has evolved into a truly visible product So, what is LiFi? LiFi full name LightFidelity, translated is the meaning of visible light wireless communications. Some people call this technology "photo-fidelity technology." The working principle of LiFi is to use the visible spectrum for data transmission. Visible light is the transmission source of the entire information transmission system. The controller controls the on-off of the light source so as to control the information transmission between the terminal receivers. The LiFi technology was developed by a physicist named Herald Haas, a Chinese named Hallaard Haas. From October 2011 to the present, Herald Haas's LiFi technology has evolved to the third generation. The third generation of new product called "LiFi-X", from a conceptual theory has become a reality visible product. "LiFi-X" compared to the previous two generations of products, the most obvious difference is the volume further reduced; the same time, "LiFi-X" transfer rate is also greatly improved, the current uplink and downlink rates have reached the level of 40Mbps; "LiFi -X "receivers are also being developed to be more sensitive and accept non-direct light sources, meaning that light sources, both backwards and sideways, can be effectively received. WiFi has two major advantages over WiFi LiFi powerful than WiFi mainly lies in these two points: First, strong security. WiFi transmission is mainly the use of radio waves, the radio has a frequency, this frequency can be cracked. However, LiFi is the use of visible light for information transmission, light composition is complex, with wave-particle duality. In simple terms, it is safer to use light-emitting LiFi. WiFi access can be avoided outside the building, indoor information will not be leaked to the outdoors. Second, speed. The world's fastest light speed, LiFi is the use of visible light for information transmission, and WiFi is a radio transmission. So LiFi spread faster than WiFi. LiFi technology is still not mature enough Although LiFi is more secure and faster than WiFi. However, the current LiFi technology still has all kinds of limitations. First, reverse communication. Currently, the biggest limitation of LiFi technology should be reverse communication, from the LED light bulbs can transmit signals to the terminal, but how to ensure that the terminal reflects the signal back to the LED bulbs and has not been a perfect solution. Second, communication distance. Although LiFi faster, but the transmission distance is not guaranteed. WiFi transmission distance is limited now. How to ensure that a LiFi device to meet the LiFi needs of the whole family is still an urgent need to be solved by scientists. Third, interference with the environment. LiFi mainly rely on visible light for data transmission. Although LED lights can modulate light into the invisible range of the human eye, if the light is too bright, the normal transmission of LiFi will be affected. When the signal-to-noise ratio (the ratio of the normal electronic signal to the additional signal generated by the device) is too small, the transmission of information is distorted and the normal transmission of information is weakened. The third generation of LiFi products now block the light source, data transmission will still be interrupted. LiFi technology is undoubtedly a better than WiFi data transmission technology, but because of all the limitations of universal access may take time. I believe in the near future, this data transmission technology will completely change our lives.
The main function of the edge banding is to seal the cross-section of the board, so as to avoid the damage of the board and the adverse factors (mainly moisture) in the process of use and prevent the formaldehyde inside the board from volatilizing, and at the same time achieve the effect of beautiful decoration.
The product has the following main features: smooth surface, no blistering, no ribbing, moderate gloss, smooth surface and back surface, uniform thickness, uniform width, reasonable hardness, high elasticity, good quality, strong wear resistance, trimmed and sealed The color of the side and the side is close to the surface color, not whitish, good gloss, and the overall color of the finished furniture is coordinated.
Judge good or bad PVC Edge Banding For Cabinet,Pvc Edge Banding,Banding For Cabinet,T Shape Pvc Edge Banding For Kitchen Cabinet Henan Shunbang Chemical Industry CO.,Ltd , https://www.suspensionpvc.com
1. Look at the hue and surface roughness of the edge banding strip. The color of the surface of a good edge banding strip is also very important. Whether the color is close to the customized product and is gorgeous. If the surface is very rough and there are pull marks, the quality is definitely not much better. This is the surface quality of the edge banding strip. It has nothing to do with the quality of the inner material of the edge banding, mainly the production process of the edge banding factory and the production technical skills of the employees. A good edge banding strip is: the surface must be smooth, no blistering or seldom bubbling, no drawing or few drawing, moderate gloss, not too shiny or too matte (unless there are special requirements).
2. Check the flatness of the surface and bottom of the edge banding and whether the thickness is uniform, otherwise it will cause the joint between the edge band and the board, the glue line is too eye-catching or the gap between the board and the edge band is too large, which will affect the overall beauty. Details determine success or failure, and often a small detail problem may bring an embarrassing situation where the overall effect is not good.
3. Whether the edge trimming is whitish, whether the surface of the bent edge strip is severely whitish, and whether the ground color of the trimming strip is close to the surface color of the board in question. PVC Edge Banding strips are mainly made of PVC and Calcium Carbonate plus additives. If the calcium carbonate content is too high, whitening of the edge banding and bending will occur, which proves that the quality of such products is not good.
4. Whether the strength is okay and whether there is elasticity. High strength means good wear resistance, and the corresponding quality is better. Too high strength also means increased processing difficulty. Low elasticity means low wear resistance and low aging resistance. In addition, according to actual production needs, manual trimming is generally required, and soft spots can be made appropriately, and the automatic edge banding machine can make hard points appropriately.
5. Whether the adhesive is applied evenly and whether it is easy to fall off during use.
6. Smell whether the PVC edge banding strips taste or not. Products produced with good quality raw materials generally have a small taste. If the taste is too large, it means that the quality of the raw materials used in production is relatively poor.