Automated Access Platform Ramp for Rail Gap Bridging
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Solution Overview
Problem
Current access systems for rail-based vehicles require manual driver assistance for passengers with mobility impairments, leading to communication challenges, potential injuries, and travel delays, while also stigmatizing individuals who need help.
Innovation Solution
An automated access system with a dedicated zone and a controller that extends a ramp laterally and vertically to bridge the gap between the platform and the rolling stock, using linear actuators and a cam member, activated by RFID sensors to accommodate different train types and heights, eliminating the need for driver intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual driver assistance is used to install ramps for passengers with mobility impairments, then accessibility is provided, but communication challenges, potential injuries, and travel delays occur
Solution Approach 1:
The system enables self-service by automatically detecting when a train is at the station and deploying the ramp without requiring driver intervention. The ramp system operates autonomously, eliminating the need for manual assistance while maintaining accessibility for passengers with mobility impairments.
Solution Approach 2:
The ramp is pre-positioned in a stowed location within the platform structure and automatically deployed before the train door opens. This preliminary positioning and automatic deployment eliminates the time loss associated with manual ramp installation during passenger boarding.
2Ease of operation
If manual driver assistance is used to install ramps, then accessibility is provided, but driver safety risks increase due to potential injuries during ramp installation and removal
Solution Approach 1:
The automated ramp system performs all installation and removal operations without human intervention, eliminating the driver from the hazardous task of manually handling ramps. The system serves itself by detecting train presence and automatically deploying/retracting the ramp mechanism.
Solution Approach 2:
The manual mechanical operation of ramp installation by the driver is replaced with an automated mechanical system that uses sensors to detect train presence and actuates the ramp deployment through mechanical means, removing the driver from direct contact with moving ramp components.
3Ease of operation
If the driver leaves the cabin to provide manual ramp assistance, then accessibility is provided, but communication efficiency decreases and travel time increases
Solution Approach 1:
The system eliminates the need for communication between driver and passenger regarding ramp assistance by automatically detecting train presence and deploying the ramp. The automated system handles the entire process without requiring the driver to leave the cabin or communicate with passengers needing assistance.
Solution Approach 2:
The system uses sensor feedback to detect when the train is present at the platform and automatically triggers the ramp deployment sequence. This feedback mechanism eliminates the need for manual communication and coordination between the driver and passengers, improving communication efficiency.
4Ease of operation
If manual ramp assistance is provided, then accessibility is achieved, but passenger stigma increases due to unwanted attention
Solution Approach 1:
The automated ramp system provides assistance without requiring the passenger to request or coordinate with the driver, reducing unwanted attention and stigma. The system operates autonomously based on train detection, providing seamless access that normalizes the experience for passengers with mobility impairments.
5Productivity
If automated ramp deployment is implemented, then driver assistance is eliminated and efficiency improves, but system complexity increases
Solution Approach 1:
The complex manual coordination process between driver and passenger is replaced with a simpler automated mechanical system that uses sensor detection and automatic actuation. While the physical mechanism is more complex, the operational complexity is reduced by eliminating manual intervention requirements.
Solution Approach 2:
The automated ramp system serves multiple functions: it detects train presence, determines when deployment is needed, executes the deployment, and retracts afterward. This multi-functionality consolidates what would otherwise require separate manual operations into a single integrated system, improving efficiency despite the increased device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides seamless, automated access for passengers with mobility impairments, reducing delays and stigma, as it automatically adjusts to various train configurations without requiring driver assistance, enhancing safety and efficiency.
Implementation Method 1
The lateral of extension of the ramp may be controlled by one or more linear actuators mounted within the dedicated zone and attached to a rear of the ramp
Implementation Method 2
The vertical extension of the ramp may be controlled by controlling rotational orientation of a cam member mounted beneath the ramp
Implementation Method 3
The controller may have a receiver for receiving data identifying rolling stock approaching the designated stopping station
Data Source
AI summary
An access system for providing passenger access to rolling stock at a designated stopping station, comprising: a dedicated zone for receiving the passenger, the dedicated zone being elevated above a ground surface; a ramp mounted within the dedicated zone and actuable to project from the dedicated zone in both a lateral and a vertical manner to bridge a gap between the dedicated zone and the rolling stock to facilitate access of the passenger to the rolling stock.