Dynamic Special Car Allocation for Train Congestion

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Solution Overview

Problem

In train operations, increasing the number of special cars to meet passenger demands leads to congestion in general cars during peak hours, as existing techniques do not account for the distinction between special and general cars.

Innovation Solution

A special car operation system that includes a passenger prediction unit to forecast passenger numbers, a car-count determination unit to determine the number of special cars based on passenger types, an arrangement-position determination unit to decide the placement of special cars, and a car-specification change instructing unit to adjust car specifications to meet passenger needs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the number of special cars is increased to meet passenger demands, then passenger satisfaction for special car services is improved, but general cars become crowded during peak hours

Engineering Contradiction:
Improvepassenger satisfaction for special car servicesVSAvoidcongestion in general cars
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements dynamic adjustment of the number and configuration of special cars based on real-time passenger demand predictions. The system continuously monitors reservation data and adjusts special car allocation for different time periods and routes, rather than using a fixed configuration. This allows the railway operator to increase special cars during periods of high demand while maintaining adequate general car capacity during other times, thus resolving the contradiction between satisfying special car passengers and preventing general car congestion.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes key parameters including the number of special cars, the proportion of special to general cars, and the configuration of car specifications based on predicted passenger demand. By dynamically adjusting these parameters according to time, route, and passenger type predictions, the system optimizes the balance between serving special car passengers and maintaining capacity in general cars, thereby preventing congestion while meeting special demands.

Inventive Principle:
Principle #35Parameter changes

2Quantity of substance

If the number of trains is increased according to conventional prediction techniques, then overall train capacity is improved, but the specific needs of special car passengers are not met

Engineering Contradiction:
Improveoverall train capacityVSAvoidspecial car passenger needs
Core Design Contradiction:
Quantity of substanceVSAdaptability or versatility

Solution Approach 1:

The patent segments the passenger population into different types (e.g., special car passengers, general passengers, commuters, tourists) and predicts demand for each segment separately. This segmentation allows the system to allocate train capacity differently for each passenger type, ensuring that special car passengers receive dedicated capacity while general capacity is optimized for other passengers. The conventional approach treats all passengers uniformly, whereas this segmented approach enables targeted capacity allocation that meets both special and general needs.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system applies different car configurations and service qualities to different segments of the train based on local passenger demand. Instead of uniformly increasing all train capacity, the system selectively allocates special cars to specific trains and routes where special car passengers are predicted, while maintaining standard configuration on other trains. This localized quality adjustment ensures special car needs are met without unnecessarily increasing overall train capacity.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP4167175B1Special car operation system and special car operation method
Publication Date: 2025.02.26 MITSUBISHI ELECTRIC CORP
  • EP4167175B1 patent drawingFigure 1
  • EP4167175B1 patent drawingFigure 2

AI summary

A special car operation system (1) includes a passenger prediction unit (10) that predicts the number of passengers on a train scheduled to operate and outputs passenger count information indicating the predicted number of passengers, and a car-count determination unit (20) that determines the number of special cars in the train on the basis of the passenger count information output by the passenger prediction unit (10) and outputs car count information indicating the determined number of special cars.