Train Headway Control Device for Delay Recovery
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Solution Overview
Problem
Existing train headway control systems cannot effectively recover delays from a train schedule without compromising passenger transport efficiency.
Innovation Solution
A headway control device that calculates and transmits a target traveling time for delayed trains based on normal traveling times, delay times of the train, preceding, and following trains, ensuring optimal travel order and timing to restore schedule adherence while minimizing efficiency drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the traffic control device restricts traveling of the delayed train (stops the train from leaving a station or lowers the traveling speed), then passenger transport efficiency is maintained, but the delay from the train schedule cannot be recovered
Solution Approach 1:
The invention changes the control parameter from binary restrictions (stop or slow down) to continuous target traveling time adjustment. The target traveling time is dynamically calculated based on the delayed train's delay time, the preceding train's delay time, and the following train's delay time, allowing flexible adjustment of traveling speed to achieve both delay recovery and efficiency maintenance.
Solution Approach 2:
The invention implements feedback control by continuously monitoring the delay times of the delayed train, preceding train, and following train, then adjusting the target traveling time accordingly. The control device calculates the target traveling time using the formula that incorporates feedback from all three trains' delay states, enabling dynamic optimization of the delayed train's traveling schedule.
2Loss of time
If the headway between specific trains is increased to accommodate delay, then the delayed train can recover its schedule, but passenger transport efficiency decreases
Solution Approach 1:
The invention makes the headway dynamic by calculating the target traveling time based on real-time delay information from the delayed train, preceding train, and following train. Instead of fixed headway increases, the system dynamically adjusts the traveling time to achieve delay recovery while minimizing impact on passenger transport efficiency through continuous optimization.
Data Source
AI summary
A headway control device includes: a delay time receiving unit that receives identification information and a delay time of each train within a control range; a target traveling time calculating unit that identifies a train to be controlled on the basis of the delay time, determines an order in which trains travel in a traveling direction by using the identification information, identifies a preceding train and a following train on the basis of the order, and calculates a target traveling time of the train to be controlled in a travel section in which the train to be controlled travels next by using a normal traveling time, the delay time of the train to be controlled, the delay time of the preceding train, and the delay time of the following train; and a target traveling time transmitting unit that transmits the target traveling time to the train to be controlled.