Wearable Sensor Horizontal Localization via Personal Magnetic Field
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Solution Overview
Problem
Natural input systems for wearable devices face challenges in accurately recognizing horizontal movements due to the consistency of Earth's magnetic field, limiting user freedom and precision in applications like music generation, as existing solutions like AGM sensors, GPS, and fixed cameras have limitations in horizontal localization and response time.
Innovation Solution
A wearable sensor system with wearable magnet devices generating a personal magnetic field that exceeds Earth's magnetic field strength, allowing for horizontal localization using a magnetic sensor arrangement, combined with AGM sensors for vertical localization and orientation analysis, enabling precise gesture recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If AGM sensors are used for localization, then vertical localization and orientation analysis are achieved, but horizontal localization precision is insufficient due to Earth's magnetic field consistency
Solution Approach 1:
The patent introduces a personal magnetic field as an intermediary element between the user and the magnetic sensor. This personal magnetic field, generated by wearable magnet devices, serves as a mediator that provides horizontal localization information without relying on Earth's magnetic field, thereby resolving the contradiction between measurement precision and reliability.
Solution Approach 2:
The patent replaces the reliance on Earth's magnetic field (a natural physical field) with an artificial magnetic field generated by wearable magnet devices. This substitution allows the system to achieve both horizontal localization precision and gesture recognition accuracy by using the personal magnetic field instead of Earth's magnetic field.
2Speed
If fixed cameras are used for gesture recognition, then gesture detection is possible, but response time is insufficient for real-time music generation
Solution Approach 1:
The patent replaces optical sensing (fixed cameras) with magnetic sensing (wearable magnet devices and magnetic sensors). This substitution enables real-time response time suitable for music generation while maintaining ease of operation through the personal magnetic field that moves with the user, eliminating the need for fixed camera positioning.
Solution Approach 2:
The patent makes the sensing system dynamic by wearing magnet devices on the user's body. This dynamic configuration allows the magnetic field to move with the user, providing real-time response for gestures while maintaining ease of operation as the system adapts to the user's movements.
3Measurement precision
If GPS is used for localization, then outdoor positioning is achieved, but indoor horizontal localization is not possible
Solution Approach 1:
The patent introduces a personal magnetic field as an intermediary that works independently of GPS. This personal magnetic field can be detected both indoors and outdoors, providing horizontal localization precision without relying on GPS, thereby achieving adaptability across different environments.
Solution Approach 2:
The patent creates a universal localization system using the personal magnetic field that functions both indoors and outdoors. This multi-functional approach eliminates the limitation of GPS (indoor unusability) while maintaining horizontal localization precision through the wearable magnetic field detection.
4Measurement precision
If Earth's magnetic field is used for orientation, then magnetic field sensing is possible, but horizontal region distinction is not achievable
Solution Approach 1:
The patent introduces a personal magnetic field as an intermediary that enables horizontal region distinction. This personal magnetic field, generated by wearable magnet devices, serves as a mediator that provides the necessary magnetic field variations for horizontal localization without requiring a complex multi-component magnetic field generation system.
Solution Approach 2:
The patent applies local quality by creating a personal magnetic field that is localized to the user's body. This localized magnetic field provides the necessary variations for horizontal region distinction while keeping the device complexity manageable, as the field is generated only where needed (on the user's body) rather than requiring a comprehensive external field generation system.
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 system provides accurate and precise horizontal localization, enhancing user freedom and gesture recognition, particularly in music generation applications by distinguishing between different horizontal regions and movements, thus improving the quality of musical output.
Implementation Method 1
wearable magnet devices generating a personal magnetic field that exceeds Earth's magnetic field strength
Implementation Method 2
horizontal localization using a magnetic sensor arrangement
Implementation Method 3
AGM sensors for vertical localization
Implementation Method 4
AGM sensors for vertical localization and orientation analysis
Data Source
AI summary
A wearable sensor system is disclosed that provides a measurable magnetic field that changes horizontally within the range of motion of human limbs. The wearable sensor system includes a magnetic sensing device, and one or more magnet devices that provide the measurable magnetic field with a strength exceeding the Earth's magnetic field. To this end, the magnetic sensing system provides a “personal” magnetic field about a user, with that magnetic field traveling with the user and overpowering adjacent interfering fields. The wearable sensor system may include a sensor arrangement that measures a strength of the personal magnetic field and field direction to perform horizontal localization, and may send a representation of a same to a remote computing device to cause an action to occur. Some such actions include output of pre-recorded or synthesized musical notes, for example.