The railway station yard is the site where the station carries out various technical operations. The station wireless communication system is an important means for railway station transportation safety and dispatching command. In the "General Plan for Railway Informatization", it is clearly stated that the broadband coverage of stations (fields) will reach more than 60% in 2020; the "General Technical Requirements for Broadband Wireless Access Systems in Railway Stations (Provisional)" stipulates railway stations (including Technical requirements for broadband wireless access systems, such as marshalling station, freight station, passenger station, motor train station and container center station, it is clear that the station broadband wireless access system can be used to carry railway station inspection, cargo inspection, and shunting , voice number, data and image communication services such as car number and passenger and cargo.
LTE broadband cluster wireless networking solution
Professional broadband multimedia digital trunking system developed and designed by global advanced wireless communication technology 4G (TD-LTE) can provide professional voice clustering, video scheduling and data operations in one network, using one frequency point and one terminal. The video surveillance service has strong technical advantages in terms of network security, reliability, and scalability. It has been used in many industries and fields such as transportation, public safety, energy, and wireless government. Compared with the TD-LTE public network system, it has an absolute advantage in delay, reliability, and terminal customization to meet the performance requirements of professional voice clusters.
Professional handset devices based on LTE support a variety of informational APP applications, voice call and group functions, and video groups. All kinds of railway-dedicated terminals developed based on LTE chips can transmit sensor data and video information based on 4G network, such as 4G locomotive, three-hole machine and 4G visualization high-precision positioning and leading instrument.
Narrowband communication, Wi-Fi, public network, 3G technology, etc. cannot support the development of railway big data applications and informationization due to bandwidth and security, while LTE broadband clusters have many characteristics suitable for railway stations, such as private networks. Flexible deployment of systems, flat network architecture, high frequency utilization, and wide-area coverage.
â–² Schematic diagram of LTE broadband cluster networking
Program advantage
➤ Safe and reliable. The LTE system can provide a complete set of reliability networking solutions to ensure that single points of failure do not affect network operation. End-to-end security encryption algorithms and anti-intrusion mechanisms are provided to ensure the network is protected from external intrusions, which is safe and reliable. LTE networks are planned by professional networks. The team design ensures network coverage performance to meet business requirements, better provides network optimization services, and ensures effective application of services.
➤ Flexible and efficient. The medium and small stations adopt single-station mode and support 1000 users; the large-scale marshalling station adopts small core network system to support 4000 users; the railway bureau group company or station section cross-regional overall network, adopts large core network system and supports 200,000 users. For the large-scale marshalling station and its subsequent network evolution, combined with the business isolation requirements of the various disciplines in the marshalling station, the cloud architecture is distributed. A multi-subnet load balancing mode is adopted to form a whole network with a larger scale and a larger range, and services are isolated through VPNs to implement interconnection and service confidentiality among users in different subnets. A flexible solution such as hybrid networking forms a multi-level scheduling network to implement large-scale joint networking and service interworking.
➤ Interconnection. The LTE broadband cluster solution has various interconnection and interworking gateways, which can effectively interface with narrowband clusters, fixed-line PSTNs, public network PLMNs, and existing railway systems (such as FAS dispatching systems) through air interface intercommunication, gateway interworking, and system interworking. Realize heterogeneous network interworking, improve scheduling efficiency, and protect existing investments.
➤ High quality broadband clusters. The LTE broadband cluster solution is based on the priority of users, groups, and services, and meets the QoS of different scenarios. The GBR settings ensure the bandwidth requirements of voice, cluster, and video stream services. The professional voice cluster has clear voice quality and supports dual MICs. Noise reduction, adapt to a variety of harsh environments; single cell (20 MHz bandwidth) can simultaneously support 15 720P video real-time backhaul. Voice scheduling can also provide diversified services, such as environmental monitoring, grabbing, and other multi-priority scheduling services. The dispatcher can dynamically set up the group temporarily, and the terminal receives and changes the group that refreshes the contract through the air interface.
➤ High precision positioning. Through high-precision positioning function (GPS, Beidou, differential technology), it can effectively realize job card control and track playback of station vehicles, people and objects.
value of customer
With the 4G broadband wireless communication means, the scientific dispatch of railway station management is realized, and the goal of supporting business management and improving operation is achieved, which is the value of building a railway 4G smart station platform. The relevant railway departments have recognized the importance and role of the station LTE 4G system in strengthening safety management, deepening production reform, improving work efficiency and management level.
Security
(1) Implement security card control and form a security information chain. Through data analysis and mining, timely detection, correction, prevention of non-compliance operations, improper scheduling, blind command and other faults and mistakes.
(2) Forming a horizontal information chain, opening up information barriers, realizing all-weather, all-round, and full-process monitoring of the operation process to prevent all kinds of human error.
(3) After the establishment of the high-speed network in the smart station area, the large-scale data is correlated and comprehensively analyzed, and the root cause of the obstacle is found in time, and the safety hazard is eliminated in the first time to ensure driving safety.
(4) Through the 4G shunting system, the driver's work intensity can be reduced, and the connector can be replaced in the future, effectively reducing personnel safety accidents.
(5) Using the 4G network, the APP system can automatically count the completion of operations such as cargo inspection, inspection, shunting, maintenance, etc., and can form analysis data such as pie charts to avoid human error.
(6) Through the 4G platform, it is possible to track and correct the rectification of various professional business problems, and to alert the defect that the duration of the defect is too long.
Promote management
(1) Platform construction makes the system integrate monitoring, management and decision-making, greatly improve the level of management information, make management move to automation, science and information, and drive the application of relevant systems to deepen, so that on-site operation and management The ability to achieve a qualitative leap.
(2) Through the establishment of the 4G intelligent railway station platform system, break through the traditional thinking mode, combine technological innovation and management innovation, and explore new technological means, working methods and business process transformation programs.
(3) Automatically analyze operation and maintenance indicators such as work quality, equipment quality and equipment obstacle rate, and form various quality reports to provide a basis for formulating key work plans.
(4) Automatically record the key time nodes of each professional operation process, statistically analyze the operation efficiency and facilitate the optimization management.
Efficiency
(1) Realize real-time delivery of cargo inspection operation plan, inspection, commodity inspection and shunting operation plan, maintenance maintenance and inspection inspection plan, and change paper work order into electronic work order, production operation, maintenance operation, equipment Business such as operation becomes closed loop management.
(2) Realize the multimedia information exchange between the dispatching and operation and maintenance experts and the on-site operators, and prompt the safety key points to accurately guide the on-site operations and problem handling.
(3) Intelligent identification of obstacles and automatic dispatch, reducing labor intensity of manual work, improving scheduling efficiency and work quality.
(4) Through the 4G shunting automation business, reduce the position of the leader, and ensure the safety of high-risk personnel; can automatically send the “15th Five-Year†signaling, and automatically display the car, person and object status through automatic high-precision positioning in the background. With the in-depth application of the shunting business, we must continuously improve and deepen our efforts in improving quality and efficiency and ensuring safety. A large amount of data is generated every day, and the cost of using public network traffic is huge. After the establishment of a private network, the network is owned by the railway station and used for one-time investment, and no need to pay high network usage fees.
(5) Unified wireless communication platform, one network, one frequency point, breaking information barriers, and achieving comprehensive bearing, the field personnel will be changed from 2 to 3 terminals to 1 terminal, saving cost and reducing operation intensity.
(6) The 4G platform has a wide coverage, and the station reduces a large number of equipment and construction points, saving investment and construction costs.
(7) Carrier-grade high reliability solution. The average time between failures of the equipment is 150,000 h, which ensures the stability and reliability of the station equipment and reduces the maintenance pressure of the station. Multi-class heterogeneous systems are transformed into a single converged system platform, which greatly saves the network maintenance cost.
(8) The station's intelligent business application is continuously invested and derived, the instruction and plan are automatically issued, the audit and approval intelligent check, the job form electronic report and summary report are automatically formed, and the information channel is opened for the intelligent station area for big data analysis. Provide the last 1 km access conditions.
Conclusion
LTE technology has been applied in large-scale marshalling yards and large passenger stations (Harbin South Marshalling Station, Nanning South Station, Kunming East Marshalling Station, Changsha South Bus Terminal, etc.). With the rapid development of China's railways and the innovation and improvement of LTE technology, more and more businesses will turn to LTE broadband cluster networks, which will become the development trend of future wireless communications in railway stations.
electric motorcycle charger
Electric Motorcycle Charger,Li-Ion Battery Charger For Motor,Motorcycle Li-Ion Battery Charger,Motorcycle Fast Battery Charger
HuiZhou Superpower Technology Co.,Ltd. , https://www.spchargers.com