Wearable Sensor Elastic Coupling for Constant Pressure
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Solution Overview
Problem
Conventional methods for maintaining physiological sensors against subjects often result in inaccurate readings due to improper pressure and positioning, leading to noise in sensor signals and failure to obtain measurements, especially in wearable devices like smartwatches which struggle to maintain consistent pressure and alignment.
Innovation Solution
A wearable band with an adjustable mechanism that uses an elastic coupling and pressure sensors to maintain sensors at a constant pressure and optimal position against the subject's body, utilizing a processing device to detect and adjust pressure and alignment for accurate measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to attach physiological sensors to subjects, then the device structure is simple, but the measurement precision deteriorates due to improper pressure and positioning
Solution Approach 1:
The patent implements a dynamic adjustment mechanism that allows the sensor housing to move relative to the band in multiple dimensions (x, y, and z directions). This dynamic positioning system enables the sensor to automatically adapt to different body shapes and maintain optimal contact pressure, resolving the contradiction between simple attachment structure and precise measurement by introducing controlled mobility rather than fixed rigidity
Solution Approach 2:
The patent incorporates pressure sensors that continuously monitor the contact pressure between the sensor housing and the subject's body. This feedback information is processed by a controller that adjusts the sensor positioning and band tension in real-time to maintain optimal measurement conditions, thereby improving measurement precision while managing device complexity through intelligent control
2Reliability
If fixed pressure attachment is used, then the device structure is simple, but reliability deteriorates due to noise in sensor signals and measurement failure
Solution Approach 1:
The patent replaces fixed pressure attachment with a dynamic adjustment mechanism that allows the sensor housing to move freely in three-dimensional space. This dynamic system adapts to body movements and maintains consistent sensor contact throughout the measurement period, significantly improving measurement reliability by eliminating signal noise caused by rigid constraints
Solution Approach 2:
The sensor attachment system performs self-adjustment through the dynamic housing movement and pressure feedback mechanisms. The system automatically maintains optimal sensor positioning and contact pressure without requiring external intervention, thereby improving reliability while containing complexity within the self-regulating mechanism
3Measurement precision
If adjustable pressure mechanism is added, then measurement precision improves, but ease of operation worsens due to complex adjustment procedures
Solution Approach 1:
The patent implements a self-adjusting mechanism where the sensor housing automatically positions itself relative to the band through controlled movement in x, y, and z directions. The pressure sensors and controller work autonomously to maintain optimal contact pressure without requiring user intervention, thereby improving measurement precision while preserving ease of operation through automation
Solution Approach 2:
The system uses pressure sensor feedback to automatically regulate the sensor positioning and band tension. The controller processes pressure information and makes real-time adjustments to maintain optimal measurement conditions, eliminating the need for manual adjustment procedures while ensuring consistent measurement precision
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
This solution ensures accurate and reliable physiological measurements by maintaining sensors at optimal pressure and position, reducing noise and improving measurement accuracy, even during daily activities and in varying conditions such as sweating.
Implementation Method 1
uses an elastic coupling and pressure sensors to maintain sensors at a constant pressure
Data Source
AI summary
Systems, devices, and methods for optimizing a physiological measurement are described herein. A system may include a wearable band that is wearable by a subject, a user device attached to the wearable band, and a measurement device configured to the physiological measurement. The user device may include a first communication device and a user interface. The measurement device may include a hollow housing, a processing device disposed within the housing, an elastic coupling member disposed within the housing, a physiological sensor coupled to the housing by the elastic coupling member, and a second communication device. The physiological sensor may take the physiological measurement and communicate the physiological measurement to the user device. The user interface may display the physiological measurement to the subject. The physiological measurement device and the user device may be attached to the same wearable band that is worn by the subject.