Touch Sensor Layout for Continuous Input on Curved Surfaces
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Solution Overview
Problem
Conventional touch recognition methods using touch sensors on robots are limited to areas where sensors are mounted, fail to accurately recognize continuous touch inputs with multiple direction changes, and struggle with curved surfaces, leading to poor accuracy and the need for extensive sensor coverage.
Innovation Solution
An electronic device with a housing containing a sensor module comprising multiple sensing units, each connected to a processor that determines touch trajectories and adjusts sensitivity based on touch direction, allowing for continuous touch input recognition even on curved surfaces without extensive sensor coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If touch sensors are mounted on the entire surface of the robot, then touch recognition coverage is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The housing surface is divided into multiple regions, each associated with a specific function or command. Instead of covering the entire surface with sensors, the system segments the touchable areas and uses a processor to determine which region is being touched based on touch trajectory analysis, thereby reducing the number of sensors needed while maintaining comprehensive touch recognition coverage
Solution Approach 2:
A processor acts as an intermediary between the minimal touch sensors and the touch recognition system. The processor receives signals from sensors, analyzes touch trajectories, determines mounting positions and sensing orders, and identifies the touched region, enabling comprehensive coverage with minimal sensor placement
2Measurement precision
If touch sensors are mounted on curved surfaces, then touch sensing capability is improved, but manufacturing difficulty and sensitivity consistency deteriorate
Solution Approach 1:
The system changes the parameter of sensor placement from requiring direct mounting on curved surfaces to placing sensors on flatter or more accessible areas of the housing. The processor compensates for the curved surface geometry by analyzing touch trajectories and determining mounting positions, thereby maintaining touch sensing capability while easing manufacturing difficulty
Data Source
AI summary
An electronic device including: a housing; a sensor module disposed on an inner face of the housing and including a plurality of sensing units; and a processor positioned within the housing and electrically connected to the sensor module. Each of the plurality of sensing units is electrically connected to another sensing unit adjacent thereto among the plurality of sensing units, and includes a central portion and a plurality of peripheral portions connected to a partial area of the central portion and arranged around the central portion, and each of the central portion and the plurality of peripheral portions includes a touch sensor. In addition to this, various embodiments understood through this document are possible.