Cloud NATS Architecture for Network-Wide Urban Rail Dispatching
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Solution Overview
Problem
Existing ATS systems for urban rail transit lack the capability to manage and schedule operations across an entire network, are inflexible for line expansion, and require significant hardware changes, failing to meet the demands of high-speed, intensive, and intelligent urban rail transit systems.
Innovation Solution
A network automatic train supervision (NATS) system based on a cloud platform that integrates line ATS data for network-level management, providing functions like running command, operation index analysis, and automated mapping, with a virtual data center and virtual private cloud to flexibly allocate resources and ensure redundancy and high availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional line architecture ATS system is used, then the system can provide centralized supervision and control for a single line, but it lacks the capability to manage and schedule operations across an entire network
Solution Approach 1:
The system is segmented into line-level ATS subsystems and a network-level ATS supervision system. Each line maintains its independent ATS functionality while the network level provides centralized coordination. This segmentation allows the system to manage multiple lines without requiring complete architectural redesign of existing line systems.
Solution Approach 2:
The network ATS system provides universal supervision capabilities across multiple lines through a unified platform. The same ATS architecture that manages individual lines is extended to provide network-wide scheduling, coordination, and supervision functions, allowing the system to handle both line-specific and network-wide operations with a single integrated system.
2Adaptability or versatility
If traditional ATS systems are expanded to support more lines, then network coverage increases, but significant hardware changes and reconfiguration are required
Solution Approach 1:
The system uses virtualization to create virtual copies of ATS resources and services. When expanding to new lines, virtual instances of the ATS system can be rapidly deployed on existing hardware infrastructure, eliminating the need for physical hardware changes and allowing quick system expansion through software provisioning alone.
Solution Approach 2:
The system transitions from fixed hardware configurations to flexible software-defined parameters. Line expansion is achieved by changing software parameters and virtual resource allocations rather than modifying physical hardware, allowing the system to adapt to different line configurations through parameter adjustments in the virtualized environment.
3Reliability
If physical resources are dedicated to each ATS system, then system reliability is ensured, but resource utilization efficiency decreases
Solution Approach 1:
Multiple ATS systems are merged into a unified virtualized platform where physical resources are consolidated and shared. The virtualization layer combines computing, storage, and networking resources from multiple physical systems, allowing them to be dynamically allocated to different ATS instances while maintaining isolation and reliability through virtual boundaries.
Solution Approach 2:
The virtualized ATS system implements self-service resource allocation through automated resource management and orchestration. The system automatically provisions, configures, and manages virtual resources based on demand, eliminating the need for manual hardware configuration and enabling dynamic resource optimization while maintaining system reliability through automated monitoring and failover mechanisms.
Data Source
AI summary
The present invention relates to a network automatic train supervision (NATS) system for urban rail transit based on a cloud platform, the NATS system is disposed in a network center cloud platform to collect line ATS data for analysis and provide a network operation management function; and the NATS system has functions of running command, operation index analysis, fully automated mapping, network and line collaborative command, transport organization, and aided decision. Compared with the prior art, the present invention has an advantage that information about full-road networks is displayed for large cities, so that the network center performs overall operation command and dispatching for the cities.