Wireless wearable wristband for continuous sweat pH monitoring
| Autor: | Luis Fermín Capitán-Vallvey, Miguel Carvajal, Pablo Escobedo, Francisco Santoyo-Gonzalez, Alberto J. Palma, Mariano Ortega-Muñoz, Celia E. Ramos-Lorente, Fernando Hernandez-Mateo, Miguel M. Erenas, Ignacio de Orbe-Payá, Antonio Martínez-Olmos |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Wireless monitoring
Continuous operation Computer science Wearable computer 02 engineering and technology 010402 general chemistry 01 natural sciences Ph monitoring law.invention Bluetooth SWEAT law Sweat analysis Materials Chemistry Wireless pH sensor Electrical and Electronic Engineering Instrumentation Hue business.industry Metals and Alloys Color sensor 021001 nanoscience & nanotechnology Condensed Matter Physics Wearable system 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Smartphone 0210 nano-technology business Computer hardware µCAD |
| ISSN: | 0925-4005 |
| Popis: | Several studies have shown that the determination of pH in sweat, which is one of the most accessible body fluids, can be an indicator of health and wellness, and even be used for potential disease diagnosis. On that basis, we present herein a wearable wristband for continuous and wireless monitoring of sweat pH with potential applications in the field of personal health assessment. The developed wristband consists of two main parts: a microfluidic cloth analytical device (μCAD) to collect continuously the sweat from skin with a color-based pH sensing area; and a readout and processing module with a digital color sensor to obtain the pH of sweat from the color changes in the μCAD. In addition, the readout module includes a low-power Bluetooth interface to transmit the measurements in real-time to a custom-designed smartphone application. To allow continuous operation, an absorbent pad was included in the design to retire and store thsweat from the sensing area through a passive pump path. It was found that the Hue parameter (H) in the HSV color space can be related to the sweat pH and fitted to a Boltzmann equation (R2 = 0.997). The range of use of the wristband device goes from 6 to 8, which includes the pH range of sweat, with a precision at different pH values from 3.6 to 6.0 %. Considering the typical human sweat rate, the absorbent pad allows continuous operation up to more than 1000 min. |
| Databáze: | OpenAIRE |
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