Cloud computing is very promising in intelligent transportation

Chapeau: In recent years, with the rapid development of social economy and science and technology and the increasing level of urbanization, intelligent transportation is becoming the focus of global research. However, in the practical application and research, there are still many problems to be solved in intelligent transportation, such as information sharing between systems, delay of information transmission, etc., which restricts the accessibility and accuracy of intelligent traffic information transmission, and affects the efficiency of decision support and management scheduling. It is gratifying that the emergence of cloud computing technology is to solve these problems to provide an effective way, cloud computing technology unique strong computing capacity and dynamic resource scheduling, on-demand services, such as the advantages of a large amount of information integrated management mechanism, and so on, will promote the establishment of public service platform for Intelligent Transportation, For human traffic to the direction of intelligent development to provide a strong support.

Intelligent transportation thrives in the world

Intelligent transportation is a full use of information technology, data communication transmission technology, electronic sensor technology, satellite navigation and positioning technology, control technology, computer technology and traffic engineering and other High-tech integration and application, with traffic demand-oriented, information technology as a means to comprehensively enhance traffic safety, efficiency and service quality for the purpose of Make full use of traffic, space, time and moving resources to form a new transportation system. It is characterized by the collection, processing, dissemination, exchange, analysis, use of information as the main line for the traffic participants to provide a variety of services.

At present, intelligent transportation is booming all over the world. The United States, Japan and the European Union are the three major research and development and application camps for intelligent transportation. The United States in 2010 the new release of the United States its strategic plan 2010~2014, covering 7 major areas: Travel and traffic management system, travel demand management system, public transport operation system, commercial vehicle operation system, electronic toll system, emergency management system, advanced vehicle control and safety system, Each domain contains the corresponding User Service function, and the realization of a variety of travel modes to share information services, to achieve a variety of ways to publish information, such as roadside dynamic information signs, road information radio, bus terminal information display, and often with the main roads, highways, public transport and accident management systems combined to deploy, Management and control.

The Japanese Government has realized the application of intelligent transportation in the fields of traffic information provision, electronic charge, public transportation, commercial vehicle management and emergency vehicle priority. Japan Vics Center is Japan's Road traffic information processing, distribution center, by the police department and the Highway Management department to provide traffic jams, driving time, traffic accidents, road construction speed and route restrictions, as well as parking spaces and other information, for editing and processing timely transmission to road users.

Compared with the European and American countries, China's transportation informatization started late. The Ministry of Communications began in 1995 the application of satellite positioning technology in the field of vehicle management, leading the large-scale application of satellite positioning trend, the construction of traffic informatization began to unfold. At present, the transportation information integration platform, the National Expressway Comprehensive Transportation Service and management system, the ocean shipping and the cargo monitoring system and so on public platform starts to operate, the expressway does not stop the charge, the public transportation intellectualization technology starts the comprehensive promotion.

Cloud computing provides new direction for intelligent transportation

There are serious information islands in the field of intelligent transportation, the difficulty of information sharing between systems and the delay of information transmission will restrict the accessibility and accuracy of information transmission in the field of intelligent traffic, affect the efficiency of decision support and management scheduling, and the unique computing ability of cloud computing technology, dynamic resource scheduling, The provision of services on demand and the management mechanism of massive information integration will be an important means to solve this problem.

The intelligent traffic system based on cloud computing can also realize the open effect, the current smart traffic system is generally used special equipment, built in a dedicated system, the dissemination of information more one-way transmission, lack of interactivity. After the adoption of cloud computing, the system can provide cloud computing services in intelligent traffic via the Internet. The various services of intelligent transportation not only provide services to traffic management, but also provide services to the public so that the intelligent transportation system can be transformed from a relatively closed system into an open system.

The application of cloud computing in intelligent transportation has obvious advantages: first, the ability of super computing. The cloud is composed of many computers on the network, and can be expanded continuously, can form the powerful computational ability. Second, versatility and scalability. Cloud computing is not specific to the application, in the "cloud" under the support of the structure of the ever-changing applications, the same "cloud" can support the operation of different applications. The scale of the cloud can be scaled dynamically to meet the needs of application and user-scale growth. Third, high reliability. The cloud uses such measures as data duplication fault tolerance and computing node isomorphism to ensure high reliability of services, and using cloud computing is more reliable than using a local computer. Iv. provision of services on demand. Users are fully based on their own circumstances, the "cloud" can be tailored for each user to provide a completely differentiated services. Five, energy saving and emission reduction. Because of the special fault-tolerant measures, we can use extremely inexpensive nodes to form the cloud, which greatly reduces the investment cost of the enterprise. At the same time, the commonality of the cloud makes the utilization ratio of resources increase greatly compared with the traditional system.

Building cloud computing Intelligent Transportation Public service Platform

The Intelligent Traffic public service platform is based on the perception of infrastructure construction, the perfect combination of information collection technology, cloud computing technology and advanced information fusion, and the integration of mining travel information resources for the public to provide "before the trip, travel, after the trip," the entire process of human services to achieve at any time, Any location through any communication terminals can real-time access to transport services information of the borderless service level, but also for the relevant management of the road to provide the public real-time data, to achieve good interaction between the public and management departments, at the same time, for other industries to provide corresponding service support.

From the function, the Intelligent Traffic public service platform is based on cloud computing technology, making full use of all kinds of information resources inside and outside the industry, realizing the distributed storage and data transmission and sharing of each platform data in the system, promoting the full integration of heterogeneous data, analyzing the data mining, and providing multiple services for users.

The core features of Intelligent traffic public service platform are architecture system, virtual resource scheduling and management, large data storage and large data calculation model.

Architecture system--oriented to the integrated management of heterogeneous data in the field of intelligent transportation for efficient integration, rapid response and adaptive change, the platform architecture of "data fusion, business synergy and service diversification" is constructed. Intelligent transportation for different groups, different fields, each specific field has the corresponding data and business, so build on the basis of data fusion, business synergy, and then the upper level to the user on demand dynamic provide a variety of intelligent traffic information services.

Virtual resource scheduling and management--large-scale traffic data processing service is a computationally intensive application, which can be effectively organized and utilized by virtualization technology. Through virtualization technology and cloud computing resource management platform, we realize the resource demand technology, virtual resource scheduling and centralized management of resources.

Storage of large data-to ensure high availability, high reliability and economy, cloud computing generally uses distributed storage to store data, and uses redundant storage to further ensure the reliability of the data, this architecture uses Hadoop based HDFS (Hadoop distributed File System) The information storage mode of the distributed file system, by constructing the cloud storage service system based on HDFs, solves the problem of the massive data storage of the intelligent traffic.

Computing model of massive information--the powerful computing power of cloud computing can complex and disorderly traffic data analysis and processing, traffic data modeling, spatio-temporal indexing, traffic data mining, traffic data distributed processing and traffic flow dynamic prediction, all need the computing power of cloud computing.

The Intelligent Traffic Public service platform is to serve different groups in different fields, the ultimate goal of this platform is to provide a variety of intelligent traffic applications for division personnel, enterprises and relevant government departments, which can provide the decision-making basis for the Traffic Management department's commanding and dispatching, and provide accurate and The real-time Traffic information service achieves the level of the borderless traffic information service to any person, any time, any place through any communication terminal. Therefore, the scheme uses cloud-oriented approach to realize intelligent traffic application, taking the public travel information demand as the center, integrating all kinds of location and traffic information resources and services, forming a unified traffic information source, releasing all the services to the cloud, and making the public get many kinds of convenient and real-time travel information service. The platform also provides the relevant service interface to the enterprise, complements the public, and interacts with the enterprise, transportation related departments and government to better serve the public users.

In the future, the Intelligent Transportation Public service platform will play more and more important role in the transportation. such as route guidance services can be synthesized by analyzing people, vehicle, road and other traffic factors, using all kinds of information dissemination means, for road users to provide the best path guidance information and all kinds of real-time traffic help information services, in order to optimize the path for many travelers at the same time, improve the overall road network traffic conditions, to create a smooth, convenient and efficient travel environment.

Concluding

In general, the emergence and maturity of cloud computing provides new ideas and methods for the construction of Intelligent traffic public service platform. The Intelligent Traffic public service platform based on cloud computing has realized the Innovation service based on the data fusion, realize the intelligent traffic public service centralized management, distribution deployment, unified release and maintenance, to meet the personalized needs of multiple users, in an on-demand model for users, industries and enterprises to provide personalized services, In order to realize the whole society's goal of overall cooperative management of transportation Service, it is helpful to improve the informatization level of the whole transportation industry. But at present, the relevant research is not deep enough, the actual application cases are relatively few, in order to really apply the idea and method of cloud computing to the construction of Intelligent traffic public service, still need to do a lot of research and try.