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Information technology such as the Internet of Things is a means and tool for building a smart city, and it is the infrastructure for carrying a smart city. Today, with the development of Internet technology, new technologies such as cloud computing, the Internet of Things, and the Internet of Vehicles are emerging in an endless stream. These new technologies also feed the Internet, allowing the Internet technology itself to achieve unprecedented rapid development.
The emergence of the Internet of Vehicles may be able to change the current status of the communications industry under the impact of the Internet. If traditional operators seize the opportunities given by the times, it is not impossible for the communications industry to rejuvenate the second spring and regain the right of the industry Will be around the corner.
Vehicles are an important part of the city. The total number of motor vehicles in China has reached 233 million, second only to the United States. Based on this huge number of vehicles, "Internet of Vehicles" came into being. Behind such a considerable number, it brings a variety of problems, such as traffic jams and environmental pollution. Internet of Vehicles is an important driving force for China to build a smart city; and the increase in customers and rising demand provide a commercial market for the development of Internet of Vehicles.
Wi-Fi is an industry term issued by an organization called "Wireless Ethernet Compatibility Alliance" (WECA), translated into Chinese as "wireless compatibility certification." It is a short-range wireless transmission technology that can support radio signals for Internet access within hundreds of feet. With the development of wireless Internet of Things technology, Wi-Fi will be widely used.
Wi-Fi technology from LAN to IoT
All along, due to restrictions on roaming, switching, security, interference, and transmission rate, Wi-Fi technology has always been positioned in the networking application of enterprise LANs, and replacing enterprise wired networks seems to be the main goal of Wi-Fi applications.
However, as emerging technologies such as the Internet of Things, wireless cities, and digital homes spark a new round of technological revolution, Wi-Fi technology is emerging from the company's internal LAN.
Is the Internet of Things industry driving Wi-Fi or wifi driving the Internet of Things industry.
At present, the Internet of Things has been highly valued by governments and industry authorities at various levels in various countries. Some people predict that the future Internet of Things will be a trillion-scale market that is 30 times larger than the current Internet. With strong support and promotion, the development of Internet of Things technology will surely become the latest trend in the development of information technology networking.
However, in addition to relying on the underlying sensor technology, IP address resources, intelligent embedding technology, and automatic identification technology, to achieve a truly ubiquitous Internet of Things, it is more important to achieve uniform and stable data transmission at the data transmission layer. Wi-Fi is an important form of broadband wireless access network, which can realize high-speed wireless connections in local areas, and the transmission rate is moving from the current 54Mbps to a higher 600Mbps.
At the same time, Wi-Fi also has the characteristics of simple networking structure, convenient and fast construction, etc., which has attracted more and more attention. With the continuous expansion of the Wi-Fi application field, the increasing variety of product types and the accelerated application of Wi-Fi devices, I believe that Wi-Fi will become the cornerstone of the Internet of Things industry, learning Wi-Fi is the best access to the Internet of Things industry point.
The LTWD1212-10S- 2LN development board mainly uses Nuvoton's cortex-M0 core 32-bit microcontroller and the American redpines company's WIFIRS9110N-11-22 module. , WEBsever and other functional tests. Give users intuitive understanding of WIFI communication, master the basic methods of WIFI wireless communication, and be familiar with TCP / IP protocol.
The RS9110N-11-22 module is a wireless device server based on the complete IEEE802.11BGN protocol. It can directly provide a wireless interface to any device that uses a serial or SPI interface for data transmission. It integrates MAC, baseband processor, radio frequency transceiver with power amplifier, frequency reference, antenna on hardware and all wireless LAN protocol and configuration functions, network protocol included in embedded firmware, provides for various applications A completely self-contained wireless LAN solution based on 802.11n protocol.
TFT LCD screens are characterized by good development, high screen, strong sense of layering, and bright colors, but there are also relatively power consumption and low cost. TFT screen technology legendary the development of mobile phone color screens. Many of them support 65536 color displays, and even have 160,000 color displays. With a very high screen TFT, the visual advantage is important.
Technical characteristics
TFT technology was developed in the 1990s. It uses new materials and new processes for fine semiconductor all-electronic manufacturing technology. It is the basis of liquid crystal (LC), inorganic and organic thin-film electroluminescence (EL and OEL) flat panel displays. It is a variety of films made on non-single materials such as glass or plastic products (of course also on the surface) through methods and chemical reaction forming processes, and a large number of micro-integrated circuits (LSIC) are produced through the processing of the films. Non-single crystal crystals can achieve cost reduction, which is an extension of traditional small integration to large area, function, and direction. Manufacturing TFTs that control the switching performance of pixels (LC or OLED) on large glass or plastic products has a higher technical content than manufacturing complete ICs on silicon wafers. The required production equipment and production technology surpass the production of large-scale integration of semiconductors, which is the luster of modern technology. The main features are:
(1) Large area: The first generation of large-area glass products (300mm×400mm) TFT-LCD-production line was put into production at the beginning of the nineties, and the area of eye glass has been expanded to 60mm×80mm in 2000), as well as 950mm×1200mm glass The design will also run.
(2) High integration: The size of the 1.3-inch TFT chip used for the projection of liquid crystal is one million for GA. The resolution is SXGA (1280×100×1280×1000×1280×1000×1280×1000×16.1 inch TFT screen amorphous film) 50nm, and TAB ON GLASS and SYSTEM ON GLASS technology, its IC integration, The technical requirements for equipment and supplier technology are more difficult than traditional LSI.
(3) Powerful function: TFT as a matrix selection solution provides the light valve characteristics of liquid crystal. TFT-LCD is the first Liquid Crystal Display in human history whose display quality exceeds that of CRT. The function will be more powerful, which is unmatched by traditional small integrated circuits.
(4) Design: Glass products and plastic products have fundamentally solved the problem of large semiconductors and opened up potential applications for the application of small semiconductors.
(5) Ingenious process: In addition to the use of vapor phase, chemical vapor deposition (chemical vapor deposition) MCVD (molecular chemical vapor deposition) and other processes to form films, laser flame technology has also begun to be applied traditionally, not only making amorphous films, polycrystalline films, but also Single crystal films can be manufactured. Can make silicon film, can also make other II-VI group and III-V group semiconductor thin film.
(6) Wide range of application fields. Liquid crystal display based on TFT technology is a rich industry in the information society, and the technology can also be applied to the rapid growth of thin-film organic electroluminescence (TFT-OLED) flat panel Display Screen shots. .
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ESEN Optoelectronics Technology Co., Ltd, , https://www.esenoptoelectronics.com