Train Emergency Rescue via Public Network Switch
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Solution Overview
Problem
The rail transit industry faces challenges in efficiently managing signal system failures caused by network failures, which require significant manpower, resources, and can lead to passenger commotion due to prolonged disruptions.
Innovation Solution
A method and apparatus for automatic emergency rescue of degraded trains, where a private network switch is automatically restarted, and if unsuccessful, a public network is enabled for communication, allowing for autonomous rescue operations, thereby reducing the impact of failures and minimizing rescue costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a private network is used to ensure system security and reliability, then system security and reliability are improved, but the system becomes vulnerable to network failures that require manual intervention and cause prolonged disruptions
Solution Approach 1:
The system performs preliminary actions by automatically detecting network failures and restarting the private network switch before complete system collapse occurs. This proactive approach prevents prolonged disruptions by addressing the failure in its early stages, reducing rescue time while maintaining system reliability through automated recovery mechanisms.
Solution Approach 2:
The system implements self-service by enabling the train to autonomously switch to public network communication when private network failure is detected. The train automatically establishes communication through alternative networks without requiring manual intervention from rescue personnel, thereby reducing rescue time while maintaining operational reliability.
2Ease of repair
If personnel rush to the fault location for rescue, then the fault can be addressed, but significant manpower, material resources, and financial resources are consumed
Solution Approach 1:
The system enables self-service by automatically detecting network failures and attempting self-recovery through switch restart. When self-recovery fails, the train autonomously switches to public network communication, eliminating the need for rescue personnel to physically travel to the fault location. This dramatically reduces manpower, material, and financial resources required for fault resolution.
Solution Approach 2:
The public network acts as an intermediary communication channel when the private network fails. Instead of requiring personnel to physically intervene at the fault location, the public network mediates communication between the train and ground systems, enabling remote fault management and reducing the need for on-site rescue resources.
3Ease of operation
If passengers wait at the fault location for rescue, then rescue can be provided, but commotion may occur due to prolonged waiting
Solution Approach 1:
The system takes preliminary action by automatically switching to public network communication immediately when private network failure is detected. This rapid automated response prevents prolonged passenger waiting, thereby eliminating the harmful effect of passenger commotion while maintaining ease of rescue operation through automated system switching.
Solution Approach 2:
The train performs self-service by autonomously switching communication networks without requiring manual intervention. This immediate automated response prevents passengers from waiting at the fault location, thereby eliminating passenger commotion while maintaining rescue operation capability through the alternative public network.
Data Source
AI summary
A method for a degraded train emergency rescue includes: obtaining a communication status of a private communication network that connects a train to a ground system, to a front train, and to a rear train; determining whether the private communication network fails based on the communication status; in response to determining that the private communication network fails, restarting an on-board private network switch of the train; determining whether the private communication network is recovered after the on-board private network switch is restarted; in response to determining that the private communication network is not recovered, starting an on-board public network switch of the train, and establishing public network communication between the train and each of the front train and the rear train; and performing an emergency rescue through a public network.