Contactless Ordering Terminal Gesture Detection Volume
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Solution Overview
Problem
Interactive touch-screen ordering kiosks pose hygiene and ergonomic challenges, as users must physically touch the screen, potentially spreading germs and the screens are often out of reach for individuals such as children or those in wheelchairs.
Innovation Solution
An interactive electronic device with a detection module that allows users to interact with a graphical interface without touching the screen by using a detection volume offset from the screen, enabling contactless interaction and accommodating users of varying heights through adjustable detection volumes and modes of operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a touch screen is used for interaction, then the interface can be operated directly, but hygiene is compromised due to germ transmission between users
Solution Approach 1:
The patent introduces an intermediary detection layer (camera, sensors) between the user and the touchscreen. This intermediary captures user gestures in the air and translates them into touchscreen commands, allowing interaction without direct contact while maintaining the full functionality of the touchscreen interface
Solution Approach 2:
The patent replaces the mechanical contact-based interaction system with an optical/electronic detection system. Instead of requiring physical touch, the system uses cameras and sensors to detect hand gestures, finger positions, and movement patterns in three-dimensional space, converting these into digital signals for interface control
2Illumination intensity
If the screen is placed high for visibility, then display visibility is improved, but accessibility is worsened for short users and wheelchair users
Solution Approach 1:
The patent extends the interaction space from the two-dimensional screen surface into the third dimension by creating a three-dimensional detection volume in front of the screen. Users can interact by positioning their hands or fingers within this volumetric space, allowing access to the interface without needing to reach the physical screen surface
Solution Approach 2:
The detection system acts as an intermediary that captures gestures from various distances and positions, translating them into screen interactions. This allows users who cannot physically reach the screen to still control the interface through detected gestures in the air
3Object-affected harmful factors
If the detection volume is offset from the screen, then contactless interaction is enabled, but the interaction area becomes smaller
Solution Approach 1:
The patent creates a three-dimensional detection volume that extends in front of the screen, providing multiple interaction zones at different depths and positions. This volumetric approach compensates for the offset from the screen by offering a larger spatial region for gestures, effectively increasing the interaction area beyond what a flat surface would provide
Data Source
AI summary
An interactive electronic device includes a display module designed to display a graphical interface on a display surface, a detection module designed to determine a position of a user interaction element in a preset detection module volume and a processing module suitable for controlling the interactive electronic device as a function of the determined position of the interaction element according to at least a first operating mode. In the first mode of operation, a projected surface, corresponding to the orthogonal projection of the preset detection volume on the plane including the display surface, is offset from the display surface of the graphical interface.