Adjustable Transaction Interface for User Height Accessibility
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Solution Overview
Problem
Transaction machines, such as vending and ATM machines, lack accessibility for users of varying heights and reach due to fixed user interfaces, rendering them inaccessible to individuals with physical limitations.
Innovation Solution
A transaction system with a moveable user interface that adjusts its position based on user height and proximity, controlled by a detection unit and actuation member, allowing for adjustable height and reach to facilitate transactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the user interface is fixed at a standard height, then the machine structure is simple and stable, but the interface becomes inaccessible to users of varying heights and physical abilities
Solution Approach 1:
The user interface is transformed from a fixed structure to a movable one through the integration of an actuation member (motor-driven mechanism) that enables dynamic height adjustment. The interface body member can transition between multiple height positions based on user needs, resolving the contradiction between structural simplicity and accessibility adaptability.
2Ease of operation
If the user interface is made movable to accommodate different user heights, then accessibility is improved, but the device complexity increases
Solution Approach 1:
The system incorporates sensors (proximity sensor and height detection sensor) that automatically detect user presence and characteristics, enabling the actuation member to adjust the interface height autonomously without user intervention. This self-adjusting capability improves ease of operation while minimizing the complexity of manual control mechanisms.
Solution Approach 2:
The system uses sensor feedback (proximity detection and height measurement) to continuously monitor user characteristics and automatically adjusts the interface height in response. This closed-loop control system enables adaptive adjustment without requiring complex manual operation, balancing improved accessibility with controlled device complexity.
3Adaptability or versatility
If the interface adjusts automatically based on detected user height, then accessibility for users with physical limitations is improved, but the control system complexity increases
Solution Approach 1:
The control system automatically detects user characteristics through integrated sensors and adjusts the interface height without requiring user input or complex control algorithms. The system serves itself by autonomously determining the appropriate interface position based on sensor data, improving adaptability while keeping the control system relatively simple.
Solution Approach 2:
The detection unit serves multiple functions: detecting user presence via proximity sensor and measuring user height via height detection sensor. This multi-functional sensor system reduces the need for separate specialized components, thereby improving interface adaptability while minimizing control system complexity.
Data Source
AI summary
A transaction system may include a main body member and a user interface body member. The main body member may hold an inventory of goods. The user interface body member may be mounted to the main body member. The user interface body member may include a user interface, a controller, a detection unit, and an actuation member. The user interface may be carried by the user interface body member and may be operable to facilitate transactions and dispense the goods responsive to the transaction. The detection unit may sense a height of a user and may be operable to transmit a height detection signal. The actuation member may be operable to move the user interface between a raised position and a lowered position responsive to the height detection signal.