Motion Sensor Attachment Position Detection
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Solution Overview
Problem
Motion sensing apparatuses often require specific attachment configurations, leading to incorrect function if attached incorrectly, and cannot be used across multiple configurations, limiting their versatility.
Innovation Solution
A motion sensing apparatus that determines its attachment position using acceleration measurements, selects a suitable motion analysis algorithm based on this position, and calculates motion parameters, comprising a housing unit, accelerometers, a filtering element, and a processing system that analyzes acceleration signals to identify the attachment position and select the appropriate algorithm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If motion sensing apparatus is designed for specific attachment configuration, then measurement precision is improved, but adaptability deteriorates
Solution Approach 1:
The system dynamically adapts its measurement and analysis algorithms based on the detected attachment position. The processing system automatically adjusts motion analysis parameters and selects appropriate algorithms according to whether the device is attached to the wrist, ankle, chest, or other locations, enabling a single device to maintain measurement precision across multiple attachment configurations
Solution Approach 2:
The system changes operational parameters including motion analysis algorithms, measurement axes, and calculation methods based on the detected attachment position. By modifying these parameters according to the attachment location, the system maintains accurate motion parameter measurement while adapting to different usage scenarios
2Device complexity
If motion sensing apparatus uses fixed attachment configuration, then device complexity is reduced, but versatility deteriorates
Solution Approach 1:
The motion sensing apparatus automatically detects its own attachment position using acceleration measurements and self-configures the appropriate motion analysis algorithm without requiring manual user input or complex external configuration. This self-service capability enables versatility while keeping the device interface simple and the overall system relatively simple
3Ease of operation
If motion sensing apparatus automatically detects attachment position, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The system replaces manual configuration operations with automatic detection using acceleration sensors and signal processing. Instead of requiring users to manually set attachment position parameters, the system uses accelerometer data patterns to automatically identify the attachment location and configure appropriate settings, improving ease of operation while managing complexity through software-based solutions
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 accurate determination of attachment position and selection of appropriate algorithms, allowing the apparatus to function correctly across various attachment configurations and providing real-time motion parameter feedback, enhancing user experience and data accuracy.
Implementation Method 1
an accelerometer providing a signal corresponding to an acceleration measurement
Data Source
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AI summary
A motion sensing apparatus generally comprising a housing unit operable to be attached to an object at an attachment position, an accelerometer operable to provide a signal corresponding to an acceleration measurement; and a processing system. The processing system is operable to acquire the signal corresponding to the acceleration measurement and analyze the acquired acceleration measurement to identify the attachment position of the housing unit.