3D Motion Detection via Offset Light Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current movement detection devices can only detect movements parallel to their plane of operation, failing to effectively detect three-dimensional motions, particularly along directions perpendicular to the predetermined plane.
Innovation Solution
A movement detection device incorporating a light source, a light guiding element, and multiple light sensing elements with offset configurations to detect light reflections from objects moving in three-dimensional space, allowing for the identification of motions along various directions using a processing unit that analyzes light intensity variations and sequence patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional sensors are used to detect object movement by blocking light on a predetermined plane, then movements parallel to the plane can be detected, but movements perpendicular to the plane cannot be effectively detected
Solution Approach 1:
The patent transitions from two-dimensional plane detection to three-dimensional space detection by adding a light guiding element that directs light along the Z-axis (perpendicular direction). Multiple light sensing elements are arranged in three-dimensional space with offsets along different directions, enabling detection of light reflections from objects moving in perpendicular directions, thus expanding detection from a plane to a volumetric space range.
2Adaptability or versatility
If multiple light sensing elements are integrated in a movement detection device to identify moving direction, then the device complexity increases, but the ability to detect three-dimensional motions is not achieved
Solution Approach 1:
The light guiding element serves as an intermediary that structures and directs light from the light source toward light sensing elements positioned in three-dimensional space. This mediator enables the system to achieve three-dimensional detection capability while maintaining a relatively simple sensor configuration, as the light guiding element organizes the light paths to multiple sensing elements without requiring complex sensor arrangements.
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
Enables the detection of three-dimensional motions, allowing for specific command triggering and post-processing mechanisms based on object movements in both parallel and perpendicular directions, enhancing the operational range and practicality of movement detection.
Implementation Method 1
the object, when moving in the space range, reflects the light from the light source sequentially to the light sensing elements through the light guiding element
Data Source
AI summary
The present invention relates to a movement detection device for detecting a movement of an object in a space range. The movement detection device includes a light source, a light guiding element, at least two light sensing elements and a processing unit. The light sensing elements have an offset therebetween along a first direction such that the object, when moving in the space range, reflects the light from the light source sequentially to the light sensing elements through the light guiding element. The processing unit identifies the movement of the object along the first direction according to a sequence that the light sensing elements detect the light reflected by the object.