Gesture Detection Device Using Distance and Speed Thresholds
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Solution Overview
Problem
Existing detection systems struggle to accurately detect determination gestures without physical contact, often leading to improper or erroneous gesture recognition due to variations in operation.
Innovation Solution
A detecting device with a sensor unit featuring a detection region with arrayed electrodes, and a detector that identifies gestures based on detected values from the electrodes, determining a determination gesture by considering the distance between the sensor unit and the object, and the object's movement speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hover detection function is used to enable contactless determination operations, then hygiene is improved and contactless operation is achieved, but gesture recognition accuracy deteriorates due to variations in operation
Solution Approach 1:
The patent applies parameter changes by establishing multiple detection thresholds including a first distance threshold and a second distance threshold (larger than the first), along with a movement speed threshold. The determination gesture is recognized when the object is within the first distance threshold, or when it is within the second distance threshold and movement speed is below the threshold. This multi-parameter approach adapts to variations in hover gestures while maintaining accurate recognition.
2Adaptability or versatility
If detection range is expanded to accommodate gesture variations, then ease of operation is improved, but false detection increases leading to erroneous gesture recognition
Solution Approach 1:
The patent resolves this contradiction by introducing multiple distance thresholds and movement speed thresholds. The first distance threshold provides a primary detection zone, while the second distance threshold (larger than the first) extends the detection range for hover gestures. The movement speed threshold acts as a filtering mechanism that prevents false detections by ensuring the object moves slowly enough to be a valid gesture rather than random movement or interference.
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 solution enhances the accuracy of detecting determination operations by expanding the range of valid gestures while limiting movement speed, thereby improving the reliability of gesture recognition.
Implementation Method 1
a sensor unit (10) having a detection region (AA) in which a plurality of electrodes (12) are arrayed
Data Source
AI summary
A detecting device includes a sensor unit having a detection region in which a plurality of electrodes are arrayed, and a detector configured to detect a gesture corresponding to movement of an object to be detected in a space on the detection region based on a detected value of each of the electrodes.