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Related Experiment Video

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A Detailed Protocol for Perspiration Monitoring Using a Novel, Small, Wireless Device

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Published on: November 24, 2016

Wireless passive fabric sensor for multi-ion detection in human sweat.

Zenghao Xia¹, Fabo Guo², Xueyin Chen¹

¹Institute of Exercise Science and Health Engineering, Zhejiang University, Hangzhou, 310058, China; Laboratory for Digital Sports and Health, Department of Sports Science, Zhejiang University, Hangzhou, 300058, China.

Biosensors & Bioelectronics

|October 12, 2025

Summary

This study presents a novel battery-free wearable fabric biochemical sensor for analyzing bodily fluids. The sensor offers a promising solution for convenient, real-time health monitoring at home.

Keywords:

Fabric sensor Health monitoring Ion sensing Radio frequency coupling Wireless passive sensor

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Last Updated: Jan 15, 2026

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Area of Science:

Biomedical Engineering
Wearable Technology
Biosensing

Background:

Wearable biochemical sensors are crucial for health monitoring but traditional devices suffer from complex manufacturing, discomfort, and power supply issues.
These limitations hinder their application in home care and chronic disease management.
Analyzing biomarkers in bodily fluids offers vital health insights for early diagnosis.

Purpose of the Study:

To design and validate a multi-channel, battery-free, wearable fabric biochemical sensor.
To overcome the limitations of existing wearable sensing technologies.
To enable real-time monitoring of body fluid constituents.

Main Methods:

A novel fabric biochemical sensor activated by a magnetic field was developed.
The sensor transduces biochemical information into electrical signals by modulating resonant circuit parameters.
Performance was validated through sweat monitoring during physical exercise.

Main Results:

The fabric sensor demonstrated excellent sensitivity and reliability.
Minimal cross-channel coupling was observed, ensuring accurate multi-ion detection.
The sensor successfully translated biochemical data into frequency shifts.

Conclusions:

The proposed battery-free fabric sensor offers a promising solution for real-time, routine body fluid monitoring.
This technology can significantly improve home care and chronic disease management.
The sensor provides a comfortable and convenient platform for continuous health assessment.