Railway Vehicle Ring Topology Network Reconfiguration
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Solution Overview
Problem
Existing control-command communication networks in trains are not easily configurable to accommodate changes in train composition, such as adding or removing cars, while maintaining secure and real-time communication performance.
Innovation Solution
A control-command communication network with a ring topology and a train network switch that includes a main computer, switches, and standardized connectors, allowing for dynamic reconfiguration and secure communication across varying car configurations, using a shared protocol like CIP for unified communication architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a static configuration control communication network is used, then the network structure is simple, but it is difficult to reconfigure when train composition changes
Solution Approach 1:
The patent implements a dynamic network configuration system where the control communication network automatically adapts to changing train compositions. The system uses dynamic address assignment and automatic detection of connected equipment, allowing the network to reconfigure itself when cars are added or removed without manual intervention or complex reconfiguration procedures.
Solution Approach 2:
The network management system performs self-configuration by automatically detecting the presence of equipment, assigning addresses, and establishing communication paths. The system monitors network status and autonomously adjusts configuration parameters based on the actual train composition, eliminating the need for manual reconfiguration operations.
2Adaptability or versatility
If the network configuration is changed to accommodate train composition changes, then adaptability improves, but communication reliability and timing constraints may be compromised
Solution Approach 1:
The system continuously monitors network communication status and equipment presence, using this feedback to maintain optimal configuration. The network management system detects changes in train composition and automatically adjusts parameters to ensure communication reliability and timing constraints are met, preventing degradation of performance during reconfiguration.
Solution Approach 2:
The system pre-configures network parameters and maintains a database of valid configurations for different train compositions. When changes are detected, the system retrieves pre-validated configuration templates and applies them automatically, ensuring that communication security and timing constraints are preserved from the outset of reconfiguration.
Data Source
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AI summary
This train (1), consisting of a plurality of cars, the plurality of cars comprising a front car (V1), a rear car (V1'), and a set of passenger cars (V2, V3i, V2') coupled between the front and rear cars (V1, V1'), the train (2) comprising a control and command communication network (10), a main computer (21), and a plurality of equipment (8) provided in each car (V1, V2, V3i) of the plurality of cars. The control and command communication network (10) has a ring topology extending throughout the entire train (2), allowing a daisy-chain connection of a plurality of switches (22), at least one switch from the plurality of switches (22) being arranged in each car (V1, V2, V3i) of the plurality of cars.