China has formed a basically complete IoT industrial system, and some areas have formed a certain market scale. The network communication related technologies and industrial support capabilities are relatively small in foreign countries. Sensors, RFID and other sensing end manufacturing industries, high-end software and integrated services and foreign countries The gap is relatively large. Although the instruments and meters, embedded systems, software and integrated services industries have a large scale, the equipment and services related to the Internet of Things are still in their infancy. This article refers to the address: http:// If the Internet is to connect people, then the car network is to join the car, people can communicate with the car, the car can actively display information about itself. Domestically, the Internet of Vehicles, as a form of expression in the Internet of Things, has been demonstrated by the National Experts Group and is expected to invest 200 billion yuan. It is considered by the domestic academic community to be the first practical IoT system, and the Internet of Vehicles as the Internet of Things. An important application of the transportation industry is also one of the industries in which the Internet of Things application is relatively good. In foreign countries, the Internet of Vehicles may become Internet of Vehicles, or Vehicular Network. European car networking is developing significantly faster than North America, such as several European countries (Netherlands, Sweden, Switzerland, Germany) hosted by the government, car companies involved in projects such as Telematics , and the university's literature has a high rate of online presence. The United States can find the Connected Vehicle project of the Department of Transportation. The Internet of Vehicles has a wide range of industry segmentation needs, but the development of various market segments is not balanced. Overall, the development of China's car networking industry is still in its infancy, and its technology, standards, products and markets are not mature. In terms of market segments, school buses, long-distance buses, tankers, buses, logistics vehicles, medical vehicles, official vehicles and even private cars will become key areas of the car network segment, but because of the different market segments in the car network Policy trends, technology and market maturity, market demand and other aspects are quite different, and the development gap of the vehicle Internet of Things segment is very large. Research shows that “policy first, technology-led, demand-driven†will become the main mode of China's car networking industry development. In the Internet of Things, for example, if you go to the supermarket to buy food, the “label†of the vegetables will show its health and freshness. This "tag" can be a chip or sensor, replacing the plain paper label we see now. Similarly, in the Internet of Vehicles, the vehicle-mounted terminal mounted on the vehicle can obtain vehicle information in real time, and the vehicle's various parameters and health conditions can be known to the owner in some form in real time. How to acquire, transmit, utilize and control this information, Shanghai Chenhan Electronics and many R&D and design companies that have been working in the field of vehicle networking for many years have proposed the concept of car networking gateway. The proposed vehicle networking gateway has realized the separation of data services and vehicle network application development. The following is a case of CARMAN - a highly intelligent and versatile vehicle terminal and a car network gateway integrated product, to understand some of the design ideas and workflow of the entire car network gateway, as well as functional applications. CARMAN's design idea is to integrate the Internet with the mobile communication network by using existing wireless communication methods (TD-SCDMA/TD-LTE, WCDMA, CDMA2000 (EVDO)) as a platform to provide uniformity for terminal and enterprise applications, and even government applications. interface. The system architecture diagram of CARMAN is as follows: The gateway architecture diagram of CARMAN is as follows: CARMAN is based on the requirements of the national standard GB-T19056-2003/National Ministry of Transport Industry Standards, integrating digital video compression storage and 3G wireless transmission technology (Digital Video Record), combined with GPS positioning monitoring, car driving recorder, SD card Capacity storage, driver IC card identification, bus station, multi-channel data interface, car Bluetooth hands-free voice call function, reversing monitoring, WIFI hotspot, more car comfort and entertainment car MP3/MP4, car audio and video, car amplifier . 3G video transmission technology, dual stream transmission, adjustable speed, faster transmission, clearer and smoother video. Capture and alarm pictures can be uploaded via WCDMA or CDMA. Real-time monitoring of mobile targets enables real-time transmission of surveillance video and images. With H.264 video compression technology, the image resolution is D1, Half, D1 or CIF. The system's built-in multimedia driving record analysis software can realize 4-way image synchronous playback, conditional playback, clip storage, character overlay, geographic information and travel record overlay, event analysis and record extraction. The integrated structure greatly compresses the product volume and expands the performance of the product, in line with the development trend of the future car network gateway All in one. China has hundreds of millions of motor vehicles, and has the world's largest communication network with the largest scale and coverage. It has abundant bandwidth resources and has great advantages in developing vehicle networking. But in fact, China has not yet formed a real sense of the car network industry form and explosion point, even if the global car network is still in its infancy. Although the car network has made some breakthroughs in the long-distance bus, school bus and other sub-segments, it has not entered the consumer field on a large scale, and the real car networking characteristics in the daily life of the people have not been shown. This has caused two problems. First, the market is limited, and it is impossible to form scale and standardization. The application cost of the Internet of Vehicles technology is very high. Second, it is impossible to form a horizontal and vertical industrial chain. The professionalization is insufficient and the transaction cost will be high. At present, enterprise-level car networking solutions have problems such as repeated development, long development cycle, lack of core technologies, uncertain business models, inconsistent standards, and incompatible software and hardware. The Internet of Vehicles has the potential to form a huge market, but the potential space will need to be cultivated for a long time. The key point is to form new formats and new markets through technology and application innovation. In order to solve these problems, a new solution can be envisaged. The operator will build the car networking platform, and then provide a unified standard by the R&D service companies that master the core technologies such as Chenhan Electronics, clarify the business model, improve the industrial chain, and improve the service quality. That way, the above contradictions can be solved very well. At present, this kind of high-moisture lignite cannot be stored and transported for a long time, and its storage capacity is still large all over the world. High-moisture lignite has the characteristics of high moisture, flammability and explosiveness, and generally needs to use a fan coal mill for grinding. As the core component of the fan coal mill, the blow wheel plays a vital role in the operation of the entire unit. 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