Dual-Voltage Train Power Conversion With Landmark-Based Switching
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Solution Overview
Problem
The reliability of dual-voltage train power supply conversion systems is compromised due to unreliable landmark identification, leading to potential safety issues and damage to electrical apparatus during automatic power supply conversions.
Innovation Solution
A dual-voltage train power supply conversion system with a detection unit, conversion unit, and central control unit that classifies landmarks into multiple levels, uses mileage calculations, and includes audio-visual prompts and manual controls to ensure reliable power supply conversions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ground landmarks are provided with identification systems for manual identification, then the driver can reliably identify landmarks, but the triggering action remains uncontrollable and reliability is low
Solution Approach 1:
The patent replaces the manual identification system with an automatic image recognition system using cameras and computer vision algorithms. The system automatically captures images of landmarks, processes them through recognition algorithms, and triggers power supply conversion without human intervention, eliminating the unreliability of manual operation while maintaining accurate landmark identification
Solution Approach 2:
The system enables self-service by allowing the train to automatically detect, recognize, and respond to landmarks without driver intervention. The image recognition system processes landmark information autonomously and automatically controls the power supply conversion process, making the system self-sufficient and eliminating human error
2Extent of automation
If automatic triggering actions are implemented based on ground landmark signals, then fully automatic conversion driving is achieved, but the triggering action is uncontrollable and reliability is low
Solution Approach 1:
The patent implements feedback mechanisms where the system continuously monitors landmark detection results, recognition accuracy, and power supply status. Based on this feedback, the system can adjust its behavior, verify conversion completion, and ensure reliable operation. The feedback loop includes checking whether landmarks are successfully detected and whether conversion actions are properly executed
Solution Approach 2:
The system performs preliminary actions by pre-processing landmark images, pre-recognizing landmark patterns, and preparing conversion sequences before actual power supply conversion occurs. This ensures that all necessary information is ready and verified in advance, making the automatic process reliable and controllable
3Reliability
If multiple detection modules and calculation mechanisms are added to improve landmark detection accuracy, then reliability is enhanced, but device complexity increases
Solution Approach 1:
The patent achieves multi-functionality by using a single integrated image recognition system that performs multiple functions: capturing landmark images, processing images through recognition algorithms, calculating train position, and triggering power supply conversion. This universal system replaces multiple separate detection modules, maintaining high reliability while reducing overall system complexity
Data Source
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AI summary
The present disclosure provides a dual-voltage train power supply conversion system, a method, a train, and a storage medium for power supply conversion of a dual-voltage train between a regional railroad and an urban rail. The system includes: a detection unit, a conversion unit, a power supply unit, and a central control unit. The detection unit includes a landmark detection module, a train speed detection module, a train traveling duration detection module, and a train power supply mode detection module. The central control unit comprises an arithmetic module, a first determination module, a second determination module, and a storage module, wherein the arithmetic module is configured to calculate the mileage of the train; the first determination module is configured to determine whether the train successfully detects each of the landmarks; the second determination module is configured to determine whether the train reaches each of the landmarks; and the storage module is configured to store distance information between two adjacent landmarks and a landmark level classification mode. The present disclosure classifies the landmarks in the conversion region and enables the train to perform corresponding actions at different levels of landmarks, which improves the reliability of the dual-voltage train alternating current/direct current power supply conversion.