Arcuate Wearable Hydration Sensor with Circumferential Array
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Solution Overview
Problem
Current wearable devices for measuring body hydration lack continuous and accurate monitoring, especially during movement or shifting on the body, as they often rely on single dorsal housings that lose contact with specific tissue areas.
Innovation Solution
An arcuate wearable device with a circumferential or annular array of spectroscopic sensors ensures continuous measurement by maintaining contact with the body even if the device shifts or rotates, using a modular smart watch band or finger ring design with light emitters and receivers distributed around the circumference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single dorsal housing is used for the wearable device, then the device structure is simple, but the measurement reliability deteriorates when the device shifts or rotates on the body
Solution Approach 1:
The single dorsal housing is segmented into multiple sensor units arranged in a circumferential array around the wearable device. Each sensor unit can independently measure hydration levels, ensuring that at least one sensor maintains reliable contact with the body even when the device shifts or rotates, thus resolving the contradiction between structural simplicity and measurement reliability
Solution Approach 2:
The sensor arrangement transitions from a single-point dorsal housing to a circumferential distribution around the device perimeter. This spatial dimensionality change ensures that sensors are positioned at multiple locations, guaranteeing continuous body contact and reliable measurements regardless of device orientation or movement
2Device complexity
If a single sensor is used, then the device complexity is low, but the measurement precision deteriorates due to contact loss during movement
Solution Approach 1:
The single sensor is divided into multiple sensor units distributed circumferentially around the device. This segmentation ensures that during body movement, at least one sensor unit maintains proper contact with the body for accurate hydration level measurement, resolving the contradiction between device complexity and measurement precision
Solution Approach 2:
The system changes from a single sensor parameter to multiple sensor parameters distributed around the device. This allows the system to select or combine measurements from multiple sensors to maintain precision, accepting increased device complexity as necessary for accurate continuous monitoring
3Reliability
If sensors are distributed circumferentially, then the measurement continuity is improved, but the device complexity increases
Solution Approach 1:
The circumferential sensor array structure serves multiple functions: it ensures continuous body contact for measurement reliability, provides redundancy against contact loss during movement, and enables accurate hydration monitoring. This multi-functionality justifies the increased device complexity by delivering superior measurement continuity and reliability
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 design provides more accurate and continuous hydration level monitoring by ensuring that at least one sensor remains in contact with the body, preventing gaps in measurement and improving data collection accuracy.
Implementation Method 1
an arcuate wearable device with a circumferential or annular array of spectroscopic sensors which measures a person's body hydration level
Data Source
AI summary
This invention is an arcuate wearable device with a circumferential or annular array of spectroscopic sensors which measures a person's body hydration. In an example, this invention can be embodied in a modular smart watch band, a specialized hydration-monitoring band, or a finger ring. A circumferential or annular array of spectroscopic sensors helps to ensure continuous measurement of body hydration, even if a wearable device shifts and/or rotates on a person's wrist, arm, or finger.