On-Board Wireless Block Section Reservation for Urban Rail
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Solution Overview
Problem
Existing railway systems with high-density operations face challenges in managing complex track alignments due to the high cost and complexity of interlocking devices and ATP systems, which are not suitable for urban railway environments with non-linear track patterns.
Innovation Solution
A vehicle control system that includes a travel management device and a resource management device, allowing vehicles to reserve and manage block sections wirelessly, eliminating the need for interlocking devices and ATP systems by using on-board signaling and resource management units to handle reservations, speed calculations, and branch control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If interlocking devices and ATP systems are used for high-density railway operations, then safety and control reliability are improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent replaces ground-based mechanical interlocking devices and ATP systems with an on-board wireless communication system. The vehicle control device communicates wirelessly with the travel management device to receive speed limit patterns and control vehicle speed, eliminating the need for complex ground-based signal equipment and interlocking mechanisms.
Solution Approach 2:
The vehicle control system performs its own safety control functions through on-board devices. The vehicle control device calculates speed limits based on received track information and connection relationships, and autonomously controls vehicle speed without requiring continuous ground-based ATP intervention, enabling the system to serve itself.
2Reliability
If interlocking devices are installed on the ground side, then exclusive control among vehicles is ensured, but equipment cost and maintenance requirements increase
Solution Approach 1:
The patent replaces expensive ground-based interlocking devices with wireless communication between on-board vehicles and the travel management device. The vehicle control device receives speed limit patterns that ensure exclusive control, eliminating the need for physical interlocking equipment while maintaining control reliability.
Solution Approach 2:
The system uses information copying where the travel management device sends speed limit pattern information to the vehicle control device. This information-based control replaces physical interlocking mechanisms, allowing exclusive control through data transmission rather than mechanical intervention.
3Reliability
If conventional ATP and interlocking systems are used, then safety control is achieved, but adaptability to complicated linear alignments is reduced
Solution Approach 1:
The patent implements a dynamic system where the vehicle control device receives speed limit patterns based on real-time track information and connection relationships. The system adapts to different track configurations including complicated linear alignments by dynamically calculating and adjusting speed limits according to the specific track geometry and vehicle position.
Solution Approach 2:
The system changes control parameters (speed limit patterns) based on track conditions and connection relationships. The travel management device provides different speed limit patterns for different track configurations, allowing the vehicle control device to adapt to various linear alignments including complex urban railway patterns by adjusting operational parameters rather than requiring fixed infrastructure.
4Reliability
If ground-based interlocking devices are deployed, then block section control is achieved, but large equipment rooms and extensive maintenance are required
Solution Approach 1:
The patent replaces ground-based interlocking devices with wireless communication systems. The vehicle control device receives speed limit patterns that define block section boundaries and control requirements, eliminating the need for physical interlocking equipment rooms and extensive ground-based infrastructure while maintaining block section control functionality.
Data Source
AI summary
A travel management device is configured to transmit a reservation request for a block section to be reserved based on track information indicating a plurality of block sections constituting a track on which a vehicle travels and a connection relationship between the block sections, the block section to be reserved being among the block sections included in the track on which the vehicle travels. A resource management device is configured to record the block section to be reserved indicated by the reservation request as a reserved block section of the vehicle which has transmitted the reservation request in case where the block section to be reserved indicated by the reservation request is not reserved by a vehicle other than the vehicle which has transmitted the reservation request at a time at which the reservation request is received.