Magnetic Coordinate Sensing System for Gesture Recognition
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Solution Overview
Problem
Current methods for precisely recognizing user gestures in 3D space require high-resolution cameras and complex image processing, leading to increased costs due to the need for powerful computation processors.
Innovation Solution
A coordinate sensing system utilizing a magnetic member with a magnetic dipole moment, a direction sensor, and at least one magnetic sensor to calculate the 3D coordinate of the magnetic member, which communicates with a processor to determine the coordinate, reducing the need for high-resolution imaging and complex processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera is used to capture images for gesture recognition, then measurement precision of 3D coordinates is improved, but device complexity and cost increase due to high-resolution requirements and complex image processing algorithms
Solution Approach 1:
The patent replaces the optical measurement system (camera-based) with a magnetic field-based sensing system. Instead of using cameras to capture images and complex algorithms to calculate 3D coordinates, the invention uses magnetic sensors to directly detect magnetic field values and a direction sensor to detect magnetic dipole moment direction, simplifying the measurement mechanism while maintaining precision
Solution Approach 2:
The patent changes the measurement parameter from optical intensity (camera-based) to magnetic field strength and direction. By measuring magnetic field values at different positions and combining them with directional information from the magnetic dipole moment, the system achieves accurate 3D coordinate detection without requiring high-resolution imaging
2Measurement precision
If high-resolution cameras and complex image processing algorithms are used, then measurement precision is improved, but use of energy increases due to high-level computation processors
Solution Approach 1:
The patent replaces energy-intensive optical processing with low-energy magnetic field sensing. The magnetic sensors directly convert magnetic field information into electrical signals, and the processor simply needs to perform basic calculations on these signals rather than executing complex image processing algorithms, significantly reducing computational energy requirements
Solution Approach 2:
The magnetic sensing system inherently provides both magnitude and directional information through the magnetic field measurements and magnetic dipole moment detection. This self-contained approach eliminates the need for separate processing stages required by camera systems, reducing overall energy consumption
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 precise gesture recognition without the need for high-resolution cameras and complex image processing, lowering costs and enhancing the efficiency of motion control systems.
Implementation Method 1
The first magnetic sensor is used for sensing a first magnetic field of the magnetic member
Implementation Method 2
The direction sensor is used for sensing a direction of the magnetic dipole moment
Data Source
AI summary
A coordinate sensing system includes a magnetic member, a direction sensor, a first magnetic sensor and a processor, wherein the processor communicates with the direction sensor and is electrically connected to the first magnetic sensor. The magnetic member has a magnetic dipole moment. The direction sensor is used for sensing a direction of the magnetic dipole moment. The first magnetic sensor is used for sensing a first magnetic field of the magnetic member. The processor is used for calculating a first distance between the magnetic member and the first magnetic sensor and calculating a direction of the first distance according to a value of the magnetic dipole moment, the direction of the magnetic dipole moment and the first magnetic field. The processor is further used for calculating a coordinate of the magnetic member according to the first distance and the direction of the first distance.