Rail Vehicle Control Interface Using Projected Virtual Zones
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Solution Overview
Problem
Conventional railway vehicle control interfaces are limited by their mechanical design, which restricts modularity, is bulky due to cables, and lacks ergonomic flexibility, hindering adaptability and maintenance.
Innovation Solution
A control interface featuring a video projector that projects control zone images onto a configurable surface, with a detection system using a camera and image analysis to interpret operator interactions, eliminating the need for physical buttons and cables, and allowing for modular configuration and reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical control elements (buttons, pushbuttons, levers) are used on a control panel, then the control interface provides tactile feedback and reliable control, but the modularity is restricted and the structure becomes bulky due to cables connecting each element
Solution Approach 1:
The patent replaces mechanical control elements with a touchscreen interface that displays virtual control elements. The touchscreen detects contact through capacitive sensing rather than mechanical switches, eliminating the need for physical buttons and their connecting cables. This substitution maintains control reliability through accurate touch detection while dramatically improving modularity and reducing structural bulk.
Solution Approach 2:
The patent creates a visual copy of the control panel interface on the touchscreen display, replicating the appearance and layout of traditional mechanical controls without their physical constraints. This allows the control interface to be reconfigured software-wise while maintaining familiar operational patterns for the user.
2Reliability
If mechanical control elements are connected via numerous cables to the vehicle control device, then reliable signal transmission is achieved, but weight and bulk increase
Solution Approach 1:
The patent replaces the cable-based mechanical connection system with an electronic touchscreen interface that communicates with the vehicle control device through digital signals. This eliminates numerous physical cables, significantly reducing weight and bulk while maintaining reliable signal transmission through modern electronic communication protocols.
3Ease of operation
If the control panel structure is fixed with specific control element positions, then ergonomic positioning is achieved, but adaptability and ease of maintenance are reduced
Solution Approach 1:
The patent implements a dynamic control interface where the position, appearance, and configuration of control elements can be changed through software without physical modifications. The touchscreen can display different layouts and control schemes adaptively, maintaining ergonomic positioning through software-based optimization while allowing easy reconfiguration and simplifying maintenance through software updates rather than hardware replacement.
4Adaptability or versatility
If touchscreen technology is used to replace the control panel, then modularity and reduction of weight/bulk are achieved, but contact detection precision may be compromised
Solution Approach 1:
The patent employs capacitive touchscreen technology that detects contact through changes in electrical capacitance at the touch location. This electronic detection method provides precise coordinate identification and contact recognition, maintaining measurement precision while enabling the modular, cable-free design benefits of touchscreen technology.
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
This solution enhances modularity, reduces weight and complexity, improves ergonomics, and simplifies maintenance while maintaining essential safety features like emergency braking, enabling adaptable and efficient control of railway vehicles.
Implementation Method 1
a device for projecting images onto the control console, each image representing means of controlling the vehicle and defining a control zone on the console
Implementation Method 2
a device for detecting contact between an operator and the control zone(s)
Data Source
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AI summary
The present invention relates to a control interface (20) for a railway vehicle, comprising: a control panel (22); a device (24) for projecting images onto the control panel, each image representing vehicle control means and defining a control zone (40, 42) on the panel; and a device (26) for detecting contact between an operator (18) and the control zone(s). The detection device includes: a camera (46) capable of recording an image of contact between the operator and the panel; and an image analysis device (48) capable of matching said contact with a command of a functional device of the vehicle.