Dynamic Train Platform Barrier Aligning with Unpredictable Stops
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Solution Overview
Problem
Current security systems for train platforms are inadequate in isolating passengers from train tracks, particularly for intercity diesel trains with unpredictable stopping locations, and pose risks of passengers falling through openings or being trapped by barrier elements.
Innovation Solution
A dynamic train platform security system featuring a single expanse of interconnectable, longitudinally displaceable barrier elements that align with train doors, controlled by a computerized system responding to train position data, minimizing drive components and ensuring passenger safety and access without stairs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a static wall assembly with access doors is used, then passengers are prohibited from premature ingress and egress of the subway train, but this arrangement is insufficient for intercity diesel powered trains that stop at varied or unpredictable locations
Solution Approach 1:
The patent transforms the static wall assembly into a dynamic system where the entire barrier expanse can be longitudinally displaced along the platform. This allows the barrier to adapt its position to accommodate trains stopping at varied locations, resolving the contradiction between security reliability and adaptability to different train types.
Solution Approach 2:
The displaceable barrier system serves multiple functions: it provides security for subway trains with fixed stops, adapts to intercity diesel trains with variable stops, and can be positioned to align with any train door location. This multi-functionality resolves the limitation of the static wall assembly being insufficient for different train types.
2Adaptability or versatility
If barrier elements are shifted on two mutually spaced rails with drive means, then the barrier can be repositioned to align with train doors, but the system becomes complicated and costly
Solution Approach 1:
The patent merges the displacement function into a single integrated expanse of interconnected barrier elements that move together as one unit along a single rail. This eliminates the need for separate rails and individual drive means for each barrier element, reducing system complexity while maintaining repositionability.
Solution Approach 2:
The barrier expanse is segmented into multiple displaceable barrier elements that are interconnected and move in unison. This segmentation allows the system to be repositioned as a coordinated unit rather than requiring complex individual control of each element, reducing overall system complexity.
3Adaptability or versatility
If barrier elements are shifted orthogonally to the platform edge, then predetermined openings can be created along the track, but the available area of the waiting room at the station is unduly reduced
Solution Approach 1:
Instead of shifting barrier elements orthogonally (perpendicularly) to the platform edge, the patent moves the entire barrier expanse longitudinally (parallel to the platform edge) along a single rail. This dimensional change in movement direction allows openings to be positioned at different locations without reducing the waiting room area, as the barrier elements slide along the platform length rather than intruding into the waiting space.
4Device complexity
If a single expanse of barrier elements is used to isolate passengers, then the system is simpler, but the barrier must be repositionable in response to unpredictable train stop positions
Solution Approach 1:
The patent incorporates a control system that receives signals about train stop positions and automatically commands the single expanse of barrier elements to displace to the appropriate location. This feedback mechanism allows the simplified single-expanse system to respond adaptively to unpredictable train positions without requiring complex manual operation or multiple drive components.
Data Source
AI summary
A dynamic train platform located security system comprises a single expanse of interconnectable and longitudinally displaceable, vertical barriers for isolating a passenger waiting area at a train station from a platform edge area, including at least two longitudinally spaced and openable portal modules for permitting passage through a corresponding central opening; and a control system for causing the single expanse to be longitudinally displaced in unison, in response to a detected stop position of a train that has arrived at the station, until each portal module central opening is aligned with corresponding doors of the arrived train. In one embodiment, the system further comprises, in conjunction with a drive unit for initiating controlled and aligned movement, a passageway directly extending from a corresponding portal module central opening to a door of the arrived train and over which elderly and handicapped passengers are able to walk without having to climb stairs.