[intelligent transportation] - the overall solution of Fctel science and technology smart Expressway
Writer：Fctel Time：2021-05-12 15:34 Browse：
Intelligent transportation is a service system for transportation which fully utilizes modern electronic information technology such as Internet of things, cloud computing, artificial intelligence, automatic control and mobile Internet in the field of transportation, and was founded on September 2nd, 2014. The platform also provides information release of traffic control, road construction, emergency events and traffic weather. Whether it is driving or public transportation, it can obtain relevant information through the platform. Next, let's introduce the overall solution of smart expressway for you by Fctel technology. Let's take a look at it together!
1、 Overview of expressway industry
In recent years, the highway construction in China has made remarkable achievements. The national trunk road network, which takes highway as the skeleton and the main highway of China and province as the main body, has been basically formed. As the core of expressway electromechanical system, expressway monitoring system has also made great progress. As a visual management method, expressway monitoring system provides real-time, accurate and complete traffic information such as traffic volume and road condition for the operators and managers; In case of traffic abnormality, the system can timely discover the accident or blocked area, and release the corresponding guidance and rescue information in real time, avoid secondary accidents and ensure the highway traffic efficiency and traffic safety.
The existing highway monitoring system has some problems, such as insufficient high-definition and intelligent level, incomplete information collection coverage, isolated information island of each subsystem, low degree of networking, insufficient regional cooperation ability, and low degree of public oriented travel service. The above problems seriously restrict the improvement of highway informatization level, restrict the operation monitoring and scientific management ability of highway network, and also affect the emergency response ability and public service ability of highway emergencies.
With the rapid development of security technology, how to use the existing advanced scientific and technological means to improve the operation monitoring and scientific management level of highway network, improve the safety performance and service quality of national trunk highway network, improve the ability of highway emergency response and public service, and realize the development goal of "visible, measurable and controllable" of national trunk highway network, As well as improving the safe, smooth, convenient and green highway travel service for the people has become the main goal of the new generation of highway monitoring system construction.
2、 Introduction of Expressway solution
By the end of 2014, the number of motor vehicles in China has reached 264 million, and the total mileage of expressways has exceeded 112000 km. According to the national highway network planning (2013-2030), the total mileage of national highway will reach 136000 km by 2030.
With the continuous expansion of transportation infrastructure and transportation equipment, China's transportation management capacity is facing great challenges. It has become an urgent and important task to make full use of the formed assets and tap their potential by means of information technology, improve the operation efficiency of transportation infrastructure and transportation equipment, and ensure the smooth road network.
Expressway monitoring system, based on video monitoring system, integrates road incident detection system, violation capture system, path recognition system, truck occupation detection system, license recognition system, environmental monitoring system, information release system and other Expressway special scene monitoring systems, so as to realize the unified access of data required for operation, The expressway data and video services are effectively integrated to realize the unified application of services.
The expressway intelligent monitoring system takes var3s high-definition digital video integrated platform as the core, and constructs a three-level network monitoring system from toll station, tunnel management station to section monitoring center to provincial monitoring center, which lays a solid technical foundation for real-time road network detection, linkage command and rapid incident disposal of expressway.
3、 Topology of intelligent transportation system
4、 Features of intelligent transportation scheme
(1) Full HD
The whole system adopts full HD technology to realize the integration of HD video monitoring including high-definition acquisition, transmission, display and storage. It can not only provide clear image details, but also bring more data sources to intelligent analysis system.
(2) Integration of acquisition and transmission
A series of high-definition intelligent cameras (including cloud platform, ball machine and gun) which are suitable for the monitoring environment of expressway are introduced. The series of cameras integrates HD camera technology, intelligent video analysis technology and optical transmission technology of optical switch perfectly.
The acquisition and transmission integrated HD intelligent camera adopts a new optical fiber access network technology (redundant self-healing protection technology of optical fiber ring network), which can realize the rapid self-healing recovery of 10ms optical fiber. Compared with the traditional scheme, it has the advantages of saving fiber resources, low cost, high bandwidth, high system reliability and high scalability. At the same time, the camera has built-in intelligent analysis module. Compared with the general back-end analysis scheme, because video does not need to be transmitted to the back-end detection, there is no network packet loss, delay and other constraints on the detection effect, which effectively ensures the accuracy of video detection.
(3) All weather high definition monitoring
According to different monitoring environment characteristics, high-definition cloud platform and high-definition ball machine products with infrared and laser light supplement technology can be provided, which can not only meet the 24-hour high-definition monitoring requirements, but also meet the needs of high-definition monitoring in the medium and long distance.
(4) Seamless and compatible HD standard cleaning system
The system can not only be compatible with high-definition IP video system, HD-SDI video system, but also seamless compatibility with standard clear non compression system and standard clear digital system; It is not only an ideal solution for new high-definition monitoring system, but also an ideal option for upgrading the HD capacity of the old analog video monitoring system.
(5) System architecture advantages
The system takes var3s high-definition digital video integrated platform as the core to realize the sub center from toll station / tunnel management station to road section monitoring sub center. Then to provincial monitoring center and complete video network monitoring network to each desktop user. The whole video network monitoring system adopts the transmission mode of all fiber network, which supports the optical star, chain and self-healing ring network, which greatly guarantees the security, stability and economy of video transmission.
The application of integrated high-definition camera of acquisition and transmission saves transmission equipment, does not need signal cable, and does not need signal lightning protection. It simplifies the intermediate equipment and improves the reliability and stability of the front-end system to the maximum extent.
As the core equipment of the video monitoring system at the center, var3s high-definition digital video integrated platform integrates the functions of high-definition digital video optical fiber transmission industrial switch network, high-definition digital video matrix, high-definition digital video large screen control, 10 megabyte Ethernet switching, multi-level video networking, etc., with high integration, stable and reliable equipment and less installation and maintenance workload.
(6) Multi system integrated management
Based on video monitoring system, the system integrates road event detection system, environmental monitoring system, information release system and other high-speed applications, effectively integrates highway data and video services to realize the unified application of business.
5、 Introduction of subsystems in expressway industry
(1) Introduction of toll station monitoring system
The toll station monitoring system includes video monitoring system (Lane monitoring, toll booth monitoring, toll plaza monitoring, station monitoring) and entrance and exit sign identification system.
The toll lane adopts integrated HD card identification unit to monitor the corresponding operation process of passing vehicles and toll collector and license plate capture identification; The high-definition hemisphere is used to monitor the operation of toll collectors; The toll plaza adopts high-definition ball machine to monitor the traffic jam and other abnormal conditions occurring in the area of toll plaza.
The above cameras are connected to the remote industrial switch access equipment of the Gigaring network through the network line, and the remote access equipment of the multi Lane Gigabit ring network is connected to the high-definition digital video integrated platform of the toll station through the optical fiber redundant ring network. The monitoring and alarm signals in the toll booth are directly connected to the audio port and alarm interface of HD hemisphere in the booth to complete the functions of video and audio synchronization coding and alarm linkage. The monitoring in the financial room, monitoring room and other stations adopts HD hemisphere, and directly connects it to the high-definition digital video integrated platform through the network cable.
The terminal of toll station is based on the high-definition digital video integrated platform (var3s) as the core equipment, and the terminal monitoring system is composed of IPSAN, alarm host, video workstation, TV wall, splicing screen and other equipment. The functions of video access, matrix control, storage, alarm linkage, wall display and Internet upload are realized.
(2) Introduction of tunnel monitoring system
The tunnel monitoring system includes video monitoring system (tunnel monitoring, portal monitoring, cross tunnel / parking belt monitoring, substation monitoring) and video event automatic detection system.
The common point in the tunnel adopts high-definition acquisition and transmission integrated gun machine to monitor the traffic operation in the tunnel; According to the construction requirements, high definition acquisition and transmission integrated intelligent gun is used in some special points for the detection of traffic parameters in tunnels and automatic detection of various traffic events and accidents; The tunnel portal adopts high-definition collection and transmission integrated cloud platform / ball machine, which is used to monitor the traffic operation and surrounding environment of tunnel portal in all directions; The tunnel crossing / parking belt adopts HD acquisition and transmission integrated cloud platform / ball machine, which is used to monitor the traffic operation of cross tunnel / parking belt in all directions.
Tunnel monitoring adopts Zhongwei integrated collection and transmission series cameras, and the transmission module is embedded in the fuselage. Through the optical interface of the camera, the high-definition digital video integrated platform of tunnel management station is connected by optical fiber ring network.
The tunnel management station is based on the high-definition digital video integrated platform (var3s) as the core equipment, and the equipment such as IPSAN, video management server, video event detection server, video workstation, TV wall, splicing screen and other equipment are configured to form the tunnel management station level monitoring system. It can realize the functions of tunnel video access, matrix control, storage, large screen control, Internet upload, video event detection, linkage with other subsystems (fire, emergency telephone and video detection subsystem).
a. Automatic detection function of video event: the automatic video event detection system is an intelligent gun integrating high-definition acquisition and transmission. Through the processing and analysis of video images, the system can detect traffic parameters and automatic detection of various traffic events and accidents within the coverage of the image, and the system can alarm and video automatically in real time.
b. Real time traffic measurement: including traffic flow, average speed, occupancy, vehicle spacing, queue length, etc.
c. Traffic incident detection: including vehicle accident, vehicle stop, traffic congestion, slow vehicle travel, pedestrian, vehicle retrograde, abandoned objects, smoke and fire detection, etc.
(3) Field monitoring system
The external monitoring system includes video monitoring system (inter communication area monitoring, road monitoring, service area monitoring), truck road occupation detection system, illegal capture system, multi-path identification system and video event automatic detection system.
The video monitoring in the interchange area, pavement and service area adopts high-definition collection and transmission integrated cloud platform / ball machine (infrared / laser series), which is used to observe the traffic flow, road condition and operation order of the interchange area, along the road and service area in all-round real-time; In some special points, high-definition acquisition and transmission integrated intelligent gun machine is used for the detection of road traffic parameters and automatic detection of various traffic events and accidents.
The high-definition acquisition and transmission integration cloud / ball machine and HD acquisition and transmission integrated intelligent gun machine are embedded in the body. Through the optical interface of the camera, the high-definition digital video integrated platform of the road monitoring sub center is connected by the optical interface of the camera in the form of optical fiber ring network. The intelligent application system, variable intelligence board, microwave vehicle inspection, meteorological monitoring and other equipment are connected to the local area network of the road monitoring sub center through the remote access equipment of Gigabit ring network and the integrated cloud / ball machine optical fiber network. The segment monitoring sub center is composed of high-definition digital video integrated platform (var3s) as the core equipment, and the equipment such as IPSAN, video management server, intelligent application server, video workstation, TV wall, splicing screen and other equipment are configured to form the sub center monitoring system of the road section. The system can realize the functions of video and data access, matrix control, storage, wall display, Internet upload, and various intelligent applications.
(4) Central level monitoring system
The monitoring center is the central node of the whole monitoring system, which completes the collection, processing, analysis and release of all monitoring data. A unified network monitoring center can give full play to the functions of global route guidance, network dispatching and unified dispatching in case of emergency, and maximize the capacity and efficiency of expressway network.
a. Section monitoring sub center
The road section monitoring sub center is composed of var3s high-definition digital video integrated platform, IP-SAN storage equipment, video management server, video streaming media server, intelligent application server, TV wall, splicing screen and other equipment. Be responsible for receiving video and data information uploaded from toll stations, tunnels and outfield of the whole road section, uploading relevant information to provincial monitoring center and receiving various control commands and system parameters information issued by provincial monitoring center.
b. Provincial Monitoring Center
Provincial Monitoring Center is composed of var3s high-definition digital video integrated platform, video management server, video streaming media server, GIS Server, splicing screen and other equipment. Be responsible for receiving video and data uploaded by each section sub center, realizing the monitoring and data gathering of high-speed traffic conditions in the province, coordinating the management and emergency treatment among the sub centers of the road sections, and Issuing the disposal instructions in case of emergency.
6、 Introduction to the function module of business subsystem
(1) License plate automatic recognition service subsystem
The license plate automatic identification system can effectively prevent toll loss caused by card switching and card changing by comparing the license plate automatic identification of the entrance and exit of toll station, reduce the vehicle's passing time in the toll station, and improve the technical content and service quality of the toll management system.
(2) The subsystem of the inspection service of illegal occupation of the truck
The detection system of truck occupation automatically detects and captures the illegal occupation of express lane by the trucks on the high-speed road, and completes the license plate identification and data upload, which provides the basis for the punishment education in the later period.
(3) Detection and evidence collection process business subsystem
In three positions, the vehicle is detected to be driving on the fast lane without disturbing the vehicle. It can judge whether the vehicle occupies the fast lane for a long time, and then judge whether the vehicle is a large truck by advanced vehicle identification.
(4) Violation detection business subsystem
The system can automatically track the illegal vehicles such as parking, reverse (reverse), record the illegal process, and automatically identify the license plate, and provide a complete evidence chain for the punishment education in the later period.
(5) The service subsystem of multi semantic path recognition
The path identification system uses the vehicle license plate recognition technology to build the identification point, and at the same time reuses the toll station identification system to solve the path identification problem. The multi-purpose path identification system based on the vehicle license plate recognition technology is established to realize the identification of the vehicle path in the network, and to accurately split the toll of the multi-path vehicles.
(6) Video event detection service subsystem
The expressway event detection system detects various traffic abnormal events such as illegal parking, congestion, retrograde, pedestrian and spills, and uploads the alarm to the monitoring center. At the same time, the traffic data such as lane flow, average speed of lane, queue length and headway can be detected and analyzed, which can provide data support for traffic planning and command and dispatching.
(7) Card flushing and fee evasion detection service subsystem
The system of anti break card in toll station realizes the panoramic image of the car, and distinguishes the driver and the vehicle by license plate recognition, vehicle type recognition and face recognition technology. Thus, the evidence chain of capture image, video, license plate and driver characteristics of the truck can be formed, and the goal of pre warning and post inspection can be achieved.
(8) Vehicle video monitoring and mobile Internet service subsystem
The vehicle borne system is based on wireless transmission network, which realizes the transmission of front end audio and video information, GPS information and alarm information to the background center through wireless network, and integrates various applications of mobile Internet. It can provide local monitoring and video of vehicle video, and the vehicle monitoring video is transmitted to the mobile video monitoring center platform with the use of on-board wireless network, It can also provide the functions of sharing WiFi for passengers, browsing local resources and advertising distribution by using on-board wireless network, and widely used in public transportation, long-term transportation, school bus, logistics and taxi industry.
OK, the above content is about the overall solution of the smart highway of Fctel technology detailed introduction, hope to help you! Fctel technology optical communication and access solution expert! We have been committed to providing customers with optical terminal, industrial switch, optical fiber transceiver and other industrial communication equipment. We have been deeply engaged in intelligent transportation for several years. Based on the diversified application scenarios of railway, Metro, highway, waterway, aviation and urban public transportation, customized solutions are launched, serving more than 100 traffic industry customers first, which has been widely trusted and recognized. Welcome to come to know and exchange. email: firstname.lastname@example.org