Wearable Respiratory Signal Extraction via Dynamic Acceleration Filtering
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Solution Overview
Problem
Existing wearable devices struggle to accurately filter and provide respiratory signals from acceleration data without directly monitoring breathing or the orientation of the device, limiting their ability to provide continuous and reliable respiratory outputs.
Innovation Solution
A wearable device equipped with an accelerometer or gyroscope, and a processor that dynamically filters acceleration and velocity data to isolate respiratory movements, providing a continuous respiratory signal without regard to the device's orientation or position relative to the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing wearable devices use acceleration data to monitor respiratory signals, then they can indirectly monitor breathing, but they fail to accurately filter respiratory signals from the collected data
Solution Approach 1:
The patent applies dynamics by implementing a dynamic filter that continuously adapts to the user's movement state. The filter transitions between different modes (stationary filter vs. movement filter) based on real-time detection of movement magnitude, allowing the system to optimize respiratory signal extraction for each specific condition rather than using a static filtering approach
Solution Approach 2:
The patent changes filtering parameters dynamically based on movement detection. When significant movement is detected, the system switches to a movement filter with different characteristics than the stationary filter. This parameter adaptation allows accurate respiratory signal extraction across varying activity levels without requiring complex manual configuration
2Ease of operation
If the device provides respiratory signals without monitoring orientation, then it simplifies operation, but existing devices cannot accurately provide continuous respiratory output
Solution Approach 1:
The patent makes the respiratory monitoring function universal by designing a filtering system that works reliably across all device orientations and positions. The dynamic filter adapts to handle acceleration data regardless of how the device is worn or oriented, eliminating the need for separate calibration or orientation monitoring while maintaining continuous reliable output
3Measurement precision
If the device directly monitors breathing from mouth or nasal cavity, then it provides accurate respiratory signals, but it increases device complexity and requires direct contact with user
Solution Approach 1:
The patent uses an intermediary approach by employing acceleration data as a proxy for direct breathing monitoring. Instead of placing sensors in the mouth or nasal cavity, the system uses acceleration sensors that detect body movements associated with breathing, and a dynamic filter that extracts respiratory signals from this indirect data, avoiding direct contact while maintaining accuracy
Data Source
AI summary
A device comprising: at least one of an accelerometer or a gyroscope and a processor. The at least one of the accelerometer or gyroscope is capable of measuring movements related to respiration of a user of the device. The processor is configured to: receive data from at least one of the accelerometer or gyroscope related to the movements of the user; dynamically filter the data; and provide a respiratory signal regarding the respiration of the user. The data from at least one of the accelerometer or gyroscope is provided without regard to a position of the device relative to the user or a position of the user.