Intelligent Traffic Status and Urban Application
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1. At the planning and policy level, a coordination mechanism at the national level was established and a planning study was carried out. When formulating the “Ninth Five-Year Plan†for the development of science and technology and the long-term plan for 2010, the Ministry of Communications included the development of intelligent transportation in the plan and launched an intelligent transportation development strategy. the study. In 1998, under the guidance of the State Bureau of Quality and Technical Supervision, the Ministry of Communications formally approved the establishment of the ISO/TC204 China Committee, which has made the promotion of China’s intelligent transportation standardization a major task. National ministries and commissions have set up a national intelligent traffic coordination group, and completed a series of "China's Intelligent Transportation System Framework", "China Intelligent Transportation Standard System Framework", "Intelligent Transportation System Development Strategy Study", and other issues related to the development of intelligent transportation in China. Key projects have also completed major "intelligent transportation key technology development and demonstration projects."
2. Technical level In the mid-1970s to the early 1980s, the main experimental research was on urban traffic signal control. From the mid-1980s to the early 1990s, some major cities such as Beijing, Tianjin, and Shanghai introduced the urban signal control system, Beijing introduced the British SCOOT system, and Tianjin and Shanghai introduced the Australian SCATS system. In the 1990s, some large cities gradually built traffic monitoring systems, some high-speed or high-grade highway construction monitoring and electronic toll collection systems. GIS, GPS and other technologies are also used in management and operations. During the “10th Five-Year Plan†period, the Ministry of Science and Technology included the “Key Technology Development and Demonstration of Intelligent Transportation System†as a major project in the national science and technology breakthrough plan. The project includes 16 topics in four categories: common key technologies, key product and technology development, intelligent traffic engineering demonstration, and related basic research. The project has been accepted, won 23 national invention patents, formulated 7 corporate standards, established inter-provincial and national highway trunked line networking electronic toll collection, high-grade highway integrated management, urban traffic information collection and integration and other demonstration sites, 15 on-board safety devices, etc. There are 3 pilot lines, 4 production lines and 27 results transfer contracts. It should be said that during the "10th Five-Year Plan" period, China's intelligent transportation development has achieved remarkable results. However, the various subsystems of intelligent transportation construction in cities are still unable to effectively coordinate and integrate. The degree of integration is low and the technology is separated and independent.
3. During the "10th Five-Year Plan" period of investment, the investment in intelligent transportation will gradually increase. According to the statistics of the Ministry of Science and Technology, investment funds for participating projects of demonstration projects specifically mobilized more than 1.5 billion yuan, but the main investors are the central government and local governments. Some enterprises in China are also highly motivated. However, because of the lack of overall coordination institutions and investment mechanisms, there is insufficient communication between the government and enterprises. Intelligent transportation has not yet formed an important industry in the IT industry.
Smart traffic construction throughout China is an important part of smart city construction. It can help by improving terrestrial bus dispatching and information services, taxi comprehensive information services, rail transit transfer information services, and transportation hub comprehensive information services. Travelers choose better ways to travel, from "blind" travel to "orderly" and "reliable" travel. In recent years, all regions have spared no effort to promote the construction of intelligent transportation, and regard it as an important goal for the development of smart cities.
Beijing: Planning to invest 5.6 billion to enhance intelligent transportation During the 11th Five-Year Plan period, Beijing has initially completed the completion of the TOCC Center, which has realized the overall coordination, coordination, and linkage of the city's comprehensive transportation, and established a normalized comprehensive transportation coordination management system. The center has now consolidated more than 2,800 data items, accessing more than 6,000 multi-channel video and 13 application systems, and Beijing plans to invest 5.6 billion yuan during the 12th Five-Year Plan period to enhance intelligent transportation. The Operation Coordination Command Center (TOCC) and the three sub-centers of road network operation, transportation supervision, and bus security form an integrated and intelligent integrated traffic command support system, becoming a data sharing and exchange hub, a comprehensive transportation coordination operation center, and an information release center. In case of emergencies, it is an emergency command center for traffic safety, which means that citizens will be able to control traffic conditions in real time through websites, hotlines, mobile phones, car navigations, etc., and arrange travel in advance. At the same time, bicycle rental is also expected to achieve network services. .
The first batch of six intelligent traffic demonstration projects in Beijing in 2011 have also been implemented. These six demonstration projects include the Chang'an Street bus station electronic station card system, traffic information (public transport, self-driving, slow traffic) service system, public transport passenger flow Data collection and service system, taxi dispatch service system, public bicycle rental service system, operational vehicle detection and management information system, etc., I believe that the intelligent transportation service system can make people travel more convenient and help solve Beijing's traffic problems.
Shanghai: Continuation of the “Expo†Smart Bus Model After the World Expo ended, Shanghai strives to continue the traffic information sharing mechanism and traffic coordination mechanism during the Expo, and integrate relevant traffic information of various departments through intelligent processing. After that, it will bring more help to the general public.
Shanghai will continue to improve the comprehensive traffic information platform and the Expo information service application platform in the area of ​​intelligent traffic construction, and achieve interconnection and interoperability with regional transportation comprehensive information platforms such as Minhang and Hongqiao. Shanghai will also build an intelligent public transportation system based on the improvement of road traffic collection and release system, improve transfer information services for various modes of transportation, build and improve a traffic condition index collection and release system, and provide comprehensive and dynamic transportation to the public through multiple channels. Comprehensive information service.
Shenzhen: During the 12th Five-Year Plan period, Shenzhen will invest 1.6 billion yuan to develop intelligent transportation. In Shenzhen City, Shenzhen City issued the "12th Five-Year Plan for Intelligent Transportation in Shenzhen" (Draft for Soliciting Opinions), and established the city. The Intelligent Transport Department of the Transportation Commission and the Municipal Intelligent Transportation Standardization Technical Committee reviewed and approved the Intelligent Transportation 16 system project proposal, opened and operated the E-line network, and promoted the construction of systems such as office automation, mobile law enforcement, and intelligent transport scheduling for the Universiade. In addition, the Municipal Transportation Commission organized and organized the "12th Five-Year Plan" for the special planning of intelligent transportation, and it is one of the few cities in China that has compiled special plans for the planning of intelligent transportation.
During the “Twelfth Five-Year Plan†period, Shenzhen will invest 1.6 billion yuan for the development of the Intelligent Transportation System (ITS), which will include 200 million yuan in research funding and 1.4 billion in construction investment. In five years, it will complete eight key tasks including the next-generation IT and 16 (1 platform, 6 system) project construction. Shenzhen will implement an intelligent public transportation city transportation strategy and form a new pattern of intelligent public transportation development with rail transit as the backbone, regular bus as the main body, special bus coordination, and assisted public transport participation.
Heilongjiang: 12471 promotes the development of transportation informatization During the “Twelfth Five-Year Plan†period, Heilongjiang Province will make every effort to create a 12471 development pattern for the construction of transportation informatization. That is, one is to build a basic communication network. The province’s expressway fiber optic network as the main body, supplemented by the telecommunication public network, builds a communications infrastructure communication network, and comprehensively covers provincial, municipal, and county-level traffic management departments to support the industry’s various types of voice, video, image, information, Real-time data transmission and sharing exchange. The second is to build a 2-level data center system. The third is to build four basic support platforms. They are the transportation geography information basic platform, the provincial transportation emergency disposal platform, the traffic GPS comprehensive supervision and service platform, and the transportation public information service platform. The fourth is the formation of seven types of business applications. They are the road comprehensive management system, road transport comprehensive management and service system, waterway transportation comprehensive management system, e-government service system, traffic comprehensive video monitoring system, public logistics information service system, and urban public traffic management system. The fifth is relying on a set of security system. Relying on the construction contents of basic support, integrated management of the industry, and industrial business management, the Bank accelerated the construction and improvement of the data standard system and the safety certification system.
Shandong: Weifang Dangerous Goods Transporter Interconnect Controls Weifang City, Shandong Province to strengthen the real-time, dynamic monitoring and dispatch management of dangerous goods transport vehicles throughout the city, establish a long-term mechanism for the supervision of road transport safety, and maintain a good order for the road transport market, transportation sector The organization of 1256 sets of dangerous goods transport vehicles and 51 dangerous goods transport companies, all integrated into the province network monitoring platform, in Shandong Province took the lead in completing the work of the GPS networking and control of dangerous goods transport vehicles. After installing the GPS networking control system, not only can the speed of the dangerous cargo transportation vehicles be monitored. Once the vehicle is speeding, the management platform can constrain it in a timely manner so as to avoid the risk of leakage of dangerous goods due to a collision accident. It can also be used on dangerous goods vehicles. The rainy and snowy weather on the driving route is promptly notified, and the dangerous goods vehicles that do not follow the prescribed routes are found in time to prevent some unscrupulous drivers from arbitrarily selling dangerous goods. The promotion and application of the GPS system in the field of road dangerous goods transportation has enhanced the road transportation safety management, emergency handling, market supervision and service capabilities, and is of great significance to accelerating the transformation of development methods and promoting the development of modern road transportation industry, marking the Weifang City of Shandong Province. The road transport information construction has taken a new step.
Jiangxi: Vigorously promote the construction of ETC charging system The intelligent transportation system effectively integrates advanced information technology, electronic sensing technology, control technology, and computer technology into the entire ground transportation system. It can effectively use existing transportation facilities and reduce traffic load. Environmental pollution, improve transport efficiency. In order to develop an intelligent transportation system, Jiangxi Province relied on the demonstration project of the Changzhou Delta Expressway networked electronic non-stop charging, vigorously promoted the construction of Electronic Toll Collection System (ETC), and realized an electronic toll collection system for highways in Shanghai, Suzhou, and Shanghai. networking.
Hunan: Building an Intelligent Transportation Network Hunan Province plans to invest approximately RMB 450 billion in the province’s transport sector during the “Twelfth Five-Year Plan†period to build, upgrade, and build transportation systems, and will initially build intelligence by the end of the “Twelfth Five-Year Plan†period. The transportation system will try to build a network of intelligent transportation systems in Hunan Province.
The investment in the construction of the Hunan transport system, the proportion of highways has reached nearly two-thirds. According to the investment project plan, it is expected that by the end of the “Twelfth Five-Year Planâ€, over 60% of highways in Hunan Province will apply the non-stop toll system and 80% of highway key infrastructure will be monitored and covered, and the Changsha-Zhuzhou-Xiangtan urban agglomeration will take the lead in realizing Traffic card, these measures for the relevant security products will improve the operating efficiency of the Hunan Expressway system and ensure the safe transportation of the expressway. In addition, the Hunan Transportation System will also implement 100% coverage of the dynamic positioning, tracking and monitoring of the transportation tools at the end of the “Twelfth Five-Year Planâ€, 80% coverage of key infrastructure monitoring of waterways, and 95% of administrative licenses will be handled online.
About Intelligent Transportation Intelligent Transportation System (ITS) is the development direction of the future transportation system. It integrates advanced information technology, data communication and transmission technology, electronic sensing technology, control technology, and computer technology. A comprehensive, real-time, accurate, and efficient integrated transportation management system built on the ground traffic management system that functions in a wide range and in all directions. ITS can effectively use existing transportation facilities, reduce traffic load and environmental pollution, ensure traffic safety, and improve transportation efficiency. As a result, ITS has been increasingly valued by various countries.
The 21st century will be the century of intellectualization of highway traffic. The intelligent transportation system that people will adopt is an advanced integrated traffic management system. In this system, vehicles rely on their own intelligence to drive freely on the roads. The highways rely on their own intelligence to adjust traffic flow to the optimal state. With this system, managers will have a clear understanding of the whereabouts of roads and vehicles.
The laser cladding process involves melting the cobalt-based alloy powder using a high-energy laser beam and depositing it onto a substrate to form a protective coating. This coating helps to enhance the surface properties of the substrate, such as hardness, wear resistance, and corrosion resistance.
Some common cobalt-based alloy powders used in laser cladding include:
1. Stellite: This is a well-known cobalt-chromium-tungsten alloy that offers excellent wear and corrosion resistance. It is often used in applications where high temperatures and abrasive environments are present, such as in oil and gas drilling tools, valves, and pump components.
2. Tribaloy: Tribaloy alloys are cobalt-based alloys that contain varying amounts of chromium, molybdenum, and silicon. They are known for their exceptional high-temperature strength and resistance to galling, making them suitable for applications in the aerospace, petrochemical, and power generation industries.
3. Haynes alloys: Haynes alloys are nickel-cobalt-chromium-molybdenum alloys that offer excellent high-temperature strength, oxidation resistance, and corrosion resistance. They are commonly used in applications where extreme heat and corrosive environments are present, such as in gas turbines and chemical processing equipment.
These cobalt-based alloy powders are available in various particle sizes and can be tailored to meet specific application requirements. They can be used with different laser cladding techniques, such as powder-fed laser cladding or blown powder laser cladding, depending on the desired coating thickness and properties.
Overall, cobalt-based alloy powders for laser cladding provide enhanced surface properties and improved performa