Adjustable Sensor Mechanism for Wearable Device Skin Contact
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Solution Overview
Problem
Wearable devices face challenges in maintaining consistent contact between sensors and the user's skin, leading to varying quality of physiological data collection due to changes in finger size caused by factors like illness, physical activity, temperature, or hydration, which affects the accuracy of collected data.
Innovation Solution
Incorporating an adjustable sensor mechanism in wearable devices that can move sensors relative to the body, allowing for actuation by the user or automatically, to maintain an optimal contact level with the skin, and communicating contact information to a user device for adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the sensor is fixed in position, then the device structure is simple, but the contact level between sensor and skin varies with finger size changes
Solution Approach 1:
The sensor is made adjustable through a mechanism that allows it to move relative to the device body, transitioning from a fixed static position to a dynamic adjustable position. This enables the sensor to adapt to finger size changes while maintaining optimal contact level, resolving the contradiction between structural simplicity and contact consistency.
Solution Approach 2:
The sensor position parameter is made variable through the adjustment mechanism, allowing the distance between the sensor and device body to be changed. This parameter change enables compensation for finger size variations, improving contact level reliability without permanently increasing device complexity.
2Reliability
If the sensor is made adjustable, then the contact level consistency improves, but the device structure becomes more complex
Solution Approach 1:
The sensor adjustment mechanism introduces dynamic capability to the otherwise static device structure. This dynamic element allows the sensor to adapt its position, improving contact level consistency while accepting the necessary increase in structural complexity.
Solution Approach 2:
By making the sensor position a variable parameter rather than a fixed value, the system can adapt to different finger sizes. This parameter flexibility improves reliability while requiring the additional structural complexity of the adjustment mechanism.
3Ease of manufacture
If the sensor position is fixed, then the manufacturing is simple, but the data quality varies with finger size changes
Solution Approach 1:
The sensor assembly is designed with an adjustable mechanism rather than a fixed position, allowing the sensor to be dynamically positioned during use. This dynamic capability improves data quality by maintaining optimal contact despite finger size changes, while the manufacturing process remains relatively simple through modular design.
Solution Approach 2:
The sensor position parameter is made adjustable rather than fixed during manufacturing. This allows the sensor to adapt to different user conditions, improving measurement precision while keeping the manufacturing process straightforward through standardized adjustment mechanisms.
Data Source
AI summary
Methods, systems, and devices for operating a wearable device are described. The wearable device may include a sensor component and a contact surface configured to interface with the skin of a user. The sensor component may be coupled with the contact surface and configured to measure physiological data from the user based on interfacing with the skin of the user. The wearable device may also include a sensor adjustment mechanism coupled with the sensor component and configured to move the sensor component with respect to the contact surface.