Wearable Device Limb Orientation Detection via Somatosensory Analysis
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Solution Overview
Problem
Wearable devices, such as smart watches and wristbands, face inconvenience as users must wear them in a fixed manner to accurately measure somatosensory data, particularly when the sensor is embedded in the strap, as it restricts user preference for wearing the dial inside or outside the wrist.
Innovation Solution
A method and device that acquire somatosensory information from a limb to determine whether the side is the inner or outer side, using sensors to identify skin conductance, temperature, pH, PPG, humidity, blood oxygen, and bioelectrical impedance, allowing automatic adjustment of the device's setting for enhanced user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the somatosensory sensor is embedded in the inside of the strap, then the measurement accuracy is improved, but the user convenience deteriorates as users cannot wear the dial according to their preference
Solution Approach 1:
The system automatically detects whether the device is worn on the inner or outer side of the wrist by analyzing somatosensory data patterns, and self-adjusts the data acquisition orientation accordingly. This eliminates the need for manual configuration while maintaining measurement accuracy regardless of wearing preference.
Solution Approach 2:
The system changes the interpretation parameters of somatosensory data based on the detected wearing orientation. By identifying characteristic patterns in skin conductance, temperature, or other physiological signals that differ between inner and outer wrist placement, the system adapts its measurement parameters to correctly interpret data in either configuration.
2Measurement precision
If the device requires fixed wearing manner, then the measurement accuracy is improved, but the adaptability deteriorates as users cannot choose different wearing positions
Solution Approach 1:
The system dynamically adjusts its operation based on the detected wearing orientation. Rather than being static and requiring fixed placement, the device continuously monitors somatosensory patterns and adapts its data acquisition and processing methods to maintain accuracy whether worn on the inner wrist, outer wrist, or potentially other locations.
Solution Approach 2:
The system is designed to function correctly in multiple wearing configurations by identifying universal patterns in somatosensory data that distinguish different placement orientations. This allows a single device design to serve multiple wearing preferences without sacrificing measurement quality.
3Measurement precision
If multiple sensors are added to detect inner and outer sides, then the identification accuracy is improved, but the device complexity and hardware cost increase
Solution Approach 1:
The existing somatosensory sensors serve dual purposes: their primary function of monitoring physiological data and a secondary function of identifying wearing orientation. By analyzing patterns in the already-collected somatosensory data (skin conductance, temperature, etc.), the system determines orientation without requiring additional dedicated sensors.
Solution Approach 2:
The existing somatosensory sensor system is made multi-functional by using it both for physiological monitoring and for orientation detection. The same sensors that measure heart rate, skin temperature, and conductance also provide sufficient information to distinguish between inner and outer wrist placement through pattern recognition algorithms.
Data Source
AI summary
The present application provides a method and device for determining inner and outer sides of limbs, and relates to the field of wearable devices. The method comprises: acquiring first somatosensory information of a first side of a limb of a user, the first side being an inner side or an outer side of the limb; and determining whether the first side is the inner side of the limb according to the first somatosensory information and reference information. The method and device facilitate a device that the user wears to perform automatic setting according to an identification result, thereby enhancing user experience.