Rail Switch Request Control for Nearest-Train Locking
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Solution Overview
Problem
Conventional switch control methods in urban rail transit systems can lead to safety accidents when multiple trains request to operate a switch simultaneously, with the latter train potentially overriding the former, leading to unsafe operations.
Innovation Solution
A switch control method and apparatus that determines the train nearest to the switch and ensures it is in an idle state with the correct orientation before allowing the operation, using an object controller to move and lock the switch, thereby restricting unauthorized switch requests and ensuring only the correct train operates the switch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple trains can request switch operation simultaneously, then train operation flexibility is improved, but safety is compromised due to potential unauthorized operations
Solution Approach 1:
The system performs preliminary verification by checking whether the requesting train is the nearest train to the switch and whether the switch is in an idle state before allowing operation. This preliminary action prevents unauthorized operations while maintaining flexibility for legitimate train requests.
Solution Approach 2:
The object controller acts as an intermediary that receives switch operation requests from multiple trains, verifies the legitimacy of each request against safety conditions, and grants or denies operations accordingly. This intermediary mechanism enables flexible multi-train requests while ensuring safety through centralized verification.
2Reliability
If ground devices are used to control switches, then switch operation safety is improved, but system complexity and cost increase
Solution Approach 1:
The train itself performs the verification and control functions by determining whether it is the nearest train to the switch and whether the switch is in an idle state. This self-service approach eliminates the need for complex ground-based verification devices while maintaining safety through intelligent train-based control.
Solution Approach 2:
The patent replaces traditional mechanical ground-based switch control systems with an intelligent control system that uses position information and state determination algorithms. This substitution reduces physical ground devices while maintaining or improving safety through digital verification mechanisms.
Data Source
AI summary
A switch control method and apparatus, and a storage medium are provided, which relate to the field of urban rail transit technologies. The method includes: in a process that a train requests a target object for a switch resource, determining that the train is a train before and nearest a switch in combination with switch information sent from an object controller; when the switch is in an idle state, requesting the object controller to move the switch if it is determined that a current switch orientation of the switch is inconsistent with a switch orientation required by the train for the switch, so that the object controller controls to move the switch, and adjusts a status of the switch to a locked state after the switch is moved; and controlling the train to pass through the switch according to a response message returned by the object controller.