Information technology such as the Internet of Things is a means and a tool for building smart cities, and is an infrastructure that carries the construction of smart cities. Today, with the development of Internet technology, new technologies such as cloud computing, Internet of Things, and car networking are emerging one after another. These new technologies are also backing the Internet, and the Internet technology itself has achieved unprecedented rapid development.
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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 the traditional operators seize the opportunities given by the times, it is not impossible for the communications industry to renew the second spring, and to regain the right to speak in the industry. Will be just around the corner.
Vehicles are an important part of the city. China's total vehicle ownership has reached 233 million, second only to the United States. Based on this huge car ownership, the "vehicle network" came into being. Behind such a considerable number, it brings a variety of problems, such as traffic congestion, environmental pollution, etc., and the Internet of Vehicles is an important driving force for China to build a smart city. The increase in customers and the increase in demand provide a commercial market for the development of the Internet of Vehicles.
Wi-Fi, an industry term published by an organization called Wireless Ethernet Consistency Alliance (WECA), translated into Chinese as "Wireless Compatible Authentication." It is a short-range wireless transmission technology that supports Internet access to radio signals over hundreds of feet. With the development of wireless Internet of Things technology, Wi-Fi will be widely used.
Wi-Fi technology moves from LAN to Internet of Things
For a long time, due to the constraints of roaming, handover, security, interference and transmission rate, Wi-Fi technology has always been positioned in the networking applications of enterprise LANs, and replacing enterprise wired networks seems to be the main target of Wi-Fi applications.
However, with emerging technologies such as the Internet of Things, wireless cities and digital homes triggering 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 is driving the Internet of Things industry.
At present, the Internet of Things has been highly valued by governments and industry authorities at all levels. Some people predict that the Internet of Things in the future will be 30 times larger than the current Internet. It is believed that the major enterprises in the industry chain With the support and promotion, the development of Internet of Things technology will become the latest trend of information technology network development.
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 in the data transmission layer. Wi-Fi is an important form of broadband wireless access network, enabling high-speed wireless connections in local areas. 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 and convenient construction, which has attracted more and more attention. With the continuous expansion of Wi-Fi applications, the increasing variety of product types and the accelerated application of Wi-Fi devices, it is believed that Wi-Fi will become the cornerstone of the Internet of Things industry. Learning Wi-Fi is the best access for the Internet of Things industry. point.
The LTWD1212-10S-2LN development board mainly adopts 32-bit single-chip microcomputer of Cortex-M0 core of New Tang and WIFIRS9110N-11-22 module of Redpines of the United States, which can realize serial port WIFI transparent transmission function, even AP, ADHOC self-organizing network, DHCPsever , WEBsever and other functional tests. Give users an 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 full IEEE 802.11 BGN protocol that provides a wireless interface directly to any device that uses a serial or SPI interface for data transmission. It integrates MAC, baseband processor, RF transceiver with power amplifier, frequency reference, hardware antenna and all WLAN protocol and configuration functions, including network protocols in embedded firmware for various applications A fully self-contained WLAN solution based on the 802.11n protocol.
Wi-Fi builds automotive internet of things
According to US technology media, this unprecedented project is managed by the University of Michigan Transportation Research Center (UMTRI), and about 3,000 vehicles will be included in the plan in the next 12 months. Drivers are specially recruited because they often operate within a quarter of Ann Arbor. Each car is connected via a dedicated short-range communication channel. This technology is similar to the Wi-Fi network you use at home or in a cafe.
“Participants include some parents who need to pick up or drop off their children to school or take their children to a ballet or football stadium,†said PeterSweatman, director of UMTRI.
All data will be recorded, so the researcher can determine the accuracy of the warning and know which type of warning best helps the driver stay away from the danger. There are no autonomous vehicles yet, but the vehicle is equipped with more sensors.
Most of the cars are participants' own, and the carmakers also offer 64 vehicles equipped with embedded communication devices to connect the car's onboard computer network, with a car manufacturer's custom warning interface and multiple cameras.
This project is the result of 10 years of hard work by the US transportation department, automakers, and the University of Michigan Transportation Research Center.
The project has invested $25 million and 80% of the funds are provided by the US Department of Transportation. The eight major automobile manufacturers (Ford, General Motors, Honda, Hyundai-Kia, Mercedes-Benz, Nissan, Toyotaand Volkswagen) supported the research through a cooperative agreement.
Figures from the National Highway Traffic Safety Administration show that on average, 34,000 people die each year from traffic accidents in the United States, and about $240 billion is needed to maintain road traffic safety. If the project is widely promoted in the future, it will undoubtedly effectively reduce traffic accidents and avoid casualties.
Connect vehicles to reduce traffic accidents
According to incomplete statistics, more than 1 million people die from traffic accidents every year worldwide. Despite the rapid changes in technology, it is still difficult to solve this worldwide problem in the past few decades. We also introduced stealth bicycle helmets, Google driverless cars and more. Recently, the Michigan Transportation Research Institute (UMTRI), in conjunction with automakers and various organizations, is preparing to launch a cloud platform based on dedicated short-range communication (DSRC), using Wi-Fi-like technology to connect on-board computers and remote traffic safety management platforms. Send a warning message before the car may have an accident, reminding the driver to pay attention to safe driving, thus reducing the occurrence of traffic accidents.
More than 3,000 vehicles will participate in the project in the next year. The staff will equip each car with on-board computers, communication equipment, several sensors and multiple cameras. The on-board computer will transmit various real-time signals to the traffic while the vehicle is driving. Security management platform. Whenever a dangerous situation occurs, such as a car speeding or reverse driving, the safety platform will immediately detect and send a voice or vibration warning through the onboard computer.
In addition to providing security warnings, this platform has other applications, such as the ability to set reminders, remember to pick up children after school, and so on, and also support developers to develop a variety of applications.
Eight major automakers have joined the trial, including Ford, GM, Honda, Hyundai, Mercedes-Benz, Nissan, Toyota and Volkswagen.
The Michigan project is currently only a pilot, but it still costs $2.5 billion. If it is promoted throughout the United States, it will cost $24 billion a year, but given that 34,000 people die in traffic accidents every year in the United States, life is priceless, and this investment is acceptable.
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