Analysis of Key Technologies of Vehicle Network and Its Development Trend

With the rapid development of the automotive industry, we are now entering a new era - the era of car networking. Internet of Vehicles is an extension of the Internet of Things. It is based on the in-vehicle network, the inter-vehicle network and the in-vehicle mobile Internet. In accordance with the agreed communication protocols and data interaction standards, V2X (X: cars, roads, pedestrians and Between the Internet, etc., the large-scale network for wireless communication and information exchange is an integrated network that can realize intelligent traffic management, intelligent dynamic information service and vehicle intelligent control. It is a typical application of Internet of Things technology in the field of transportation systems. .

The Internet of Vehicles is also a huge ecosystem that combines the integration of the Internet and the mobile Internet with integrated technologies. Today's car networking is undergoing seven technological innovations.

1

Fusion multi-sensor information technology

The Internet of Vehicles is a network between vehicles, roads and people. The technical application in the Internet of Vehicles is mainly the sensor network of the vehicle and the sensor network of the road. The sensor network of the car can be divided into an in-vehicle sensor network and an off-vehicle sensor network. The in-vehicle sensor network is a network that provides information about the condition of the vehicle. The sensor network outside the vehicle is a sensor network used to sense the environmental conditions outside the vehicle. The sensor network of the road refers to a sensor for sensing and transmitting information of the road. On the road and on the side of the road. Whether it is in the car, outside the car, or the sensor network of the road, it has played a role in the environment perception, which has obtained a unique "content" for the "car network." Integrating these “contents”, that is, integrating sensor network information will be an important technological development content of “car networking”, and it is also a unique technological development content. By automatically analyzing, synthesizing, and rationally controlling and using these sensors and observations of computer technology under certain criteria, the information obtained by various individual sensors is redundant or complementary according to certain criteria to form a multi-sensor based on knowledge reasoning. Information fusion.

2

Open intelligent vehicle terminal system platform

At present, many car navigation entertainment terminals are not suitable for the development of "vehicle networking", and the core reason is to adopt a non-open, not intelligent terminal system platform. It is difficult to be used as a network ecosystem by using an open system platform that is not open and not intelligent enough. At present, the user terminals of the Internet of Vehicles include IOS system, Android system, etc. The terminal system platform of the Internet of Vehicles must be able to carry the carrier with Adroid and iPhone platform, such as: iPhone, iPad, Adroid mobile phone, Adroid navigator, Adroid tablet, etc., only open The system platform can better serve the users. According to the current situation, Google Android will also become the mainstream operating system of the car network terminal system, and those closed operating systems may be developed well, but will eventually be constrained by the development of open issues.

Analysis of Key Technologies of Vehicle Network and Its Development Trend

3

Natural speech recognition technology

The particularity of the driving environment determines that the human-computer interaction in the era of the Internet of Vehicles cannot use the mouse, keyboard, and mobile phone touch screen, and the voice interaction is safe and convenient. It is the best way to become a human-computer interaction. It will be a booster for the development of the Internet of Vehicles. . Mature voice technology allows drivers to use the voice to dictate the Internet of Vehicles, and can use the ear to receive the services provided by the Internet of Vehicles, which is more suitable for the car in this fast moving space. Mature speech recognition technology relies on a powerful corpus and computing power. Therefore, the development of in-vehicle speech technology itself depends on the network. Because the storage capacity and computing power of the vehicle terminal cannot solve the speech recognition technology of non-fixed commands, it must be To adopt "cloud recognition" technology based on server technology. A large number of voice recognition data are collected and calculated, and based on the network computing technology, a unique car audio network voice platform engine based on the mobile Internet environment is constructed to realize the recognition of multiple languages ​​and even dialects.

4

cloud computing

ç‘­ Jinyun calculation (tanjurd, founded in Silicon Valley in the United States in 2002, established in Shanghai in June 2013, is a provider of comprehensive education programs in China) will be used in the Internet of Vehicles to analyze and calculate road conditions, large-scale vehicle routing planning recommendations , intelligent traffic scheduling calculations, etc.

Vehicle network interconnection introduces cloud computing into the product. On the one hand, it can realize rapid deployment of services, and it can provide system Telematics service for industry users in a short period of time; on the other hand, the platform has powerful computing power, latest real-time data, and extensive Service support can play a strong supporting role for services. For example, traditional navigation is based on local data, just a static road, cloud-based "cloud navigation" can achieve "real-time intelligent navigation." The cloud platform will adjust the plan in real time according to the needs of users, taking into account the actual road conditions and emergencies, so as to ensure that users always grasp the most practical and most convenient route. Internet of Vehicles, like the Internet and mobile Internet, must adopt service integration to achieve service innovation and provide value-added services. Through service integration, it is possible to obtain more suitable and valuable services for in-vehicle terminals, such as call center service and auto insurance business integration, remote diagnosis and on-site service reservation integration, location service and merchant service integration.

5

LBS location service

LBS has two categories: traditional services and new services. The traditional service is mainly based on the integrated service industry chain. The services provided are mainly navigation. It also includes service location information search (restaurants, entertainment, gas stations, etc.), information push, weather reminders, car service information, etc. Or one-way information is dominant. The new service combines the mobile internet of massive users on the basis of the application, and forms many more interactive applications through the car networking community, such as sharing of location information, custom traffic information generation, car experience exchange, location-based preferential information. Provided, etc., in accordance with the needs of users and the development of technology, continue to extend to the periphery. Therefore, the inherent service will gradually have the vitality of self-innovation, bringing more convenience to users' work, life and entertainment.

Analysis of Key Technologies of Vehicle Network and Its Development Trend

6

Communication and its application technology

The Internet of Vehicles mainly relies on two aspects of communication technology: short-distance video communication and long-distance mobile communication technology. The former is mainly RFID sensing equipment and 2.4G communication technology like WIFI, the latter is mainly GPRS, 3G, LTE, 4G and other mobile communication technologies. The focus of technology development is mainly on the application of these communication technologies, including automatic payment of highways and parking lots, short-range wireless communication applications such as wireless device interconnection, VOIP applications (Cheyou Online, fleet piloting, etc.), monitoring and scheduling data packet transmission, and video surveillance. And other mobile communication technology applications.

7

Mobile internet technology

When the various applications on the smartphone are overwhelming, the user is no longer satisfied with the basic navigation function on the in-vehicle system, but needs to support the mobile Internet like a smartphone. On the terminal of the car network interconnection, navigation is only one of many applications, and there are many other applications based on user location, such as car clubs, emergency reports, etc. In addition, you can freely install Weibo, WeChat, according to your needs. Applications such as rice chat and various games meet all the application needs of users related to car life. Of course, compared with the existing universal Internet and mobile Internet, the Internet of Vehicles has two key characteristics: one is related to the car and the road, and the other is the location information as a key element. Therefore, it is necessary to develop a special Internet application for the Internet of Vehicles around these two key characteristics, which will bring a wider range of users and service providers to the Internet of Vehicles.

The author believes that the future of the Internet of Vehicles will focus on the above technologies and applications. In the future, vehicles that will realize the Internet of Vehicles will be able to integrate Global Positioning System (GPS) navigation technology, vehicle-to-vehicle communication technology, wireless communication and remote sensing technology. The analysis of real-time traffic information automatically selects the best driving route for road conditions, thus greatly alleviating traffic congestion. By using on-board sensors and camera systems, you can sense the surrounding environment and make quick adjustments when obstacles or driving conditions change. At the same time, passengers can easily communicate with the outside world through the simple wireless network interface inside the car. I believe that the integration of these technologies, the development of the Internet of Vehicles will go very fast and far.

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