Dual Mode Strain–Temperature Sensor with High Stimuli Discriminability and Resolution for Smart Wearables
Dual Mode Strain–Temperature Sensor with High Stimuli Discriminability and Resolution for Smart Wearables
复制标题
适用于智能可穿戴设备的高刺激辨别力和分辨率双模式应变温度传感器
DOI：
10.1002/adfm.202214907
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发表时间：
2023-02
影响因子：
19
通讯作者：
Huiyun Xiao;Shengbin Li;Zidong He;Yuanzhao Wu;Zhiyi Gao;Chao Hu;Siqi Hu;S. Wang;Chao Liu;J. Shang;M. Liao;D. Makarov;Yiwei Liu;Run‐Wei Li
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文献类型：
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作者：
Huiyun Xiao;Shengbin Li;Zidong He;Yuanzhao Wu;Zhiyi Gao;Chao Hu;Siqi Hu;S. Wang;Chao Liu;J. Shang;M. Liao;D. Makarov;Yiwei Liu;Run‐Wei Li
Strain and temperature are important physiological parameters for health monitoring, providing access to the respiration state, movement of joints, and inflammation processes. The challenge for smart wearables is to unambiguously discriminate strain and temperature using a single sensor element assuring a high degree of sensor integration. Here, a dual‐mode sensor with two electrodes and tubular mechanically heterogeneous structure enabling simultaneous sensing of strain and temperature without cross‐talk is reported. The sensor structure consists of a thermocouple coiled around an elastic strain‐to‐magnetic induction conversion unit, revealing a giant magnetoelastic effect, and accommodating a magnetic amorphous wire. The thermocouple provides access to temperature and its coil structure allows to measure impedance changes caused by the applied strain. The dual‐mode sensor also exhibits interference‐free temperature sensing performance with high coefficient of 54.49 µV °C−1, low strain and temperature detection limits of 0.05% and 0.1 °C, respectively. The use of these sensors in smart textiles to monitor continuously breathing, body movement, body temperature, and ambient temperature is demonstrated. The developed multifunctional wearable sensor is needed for applications in early disease prevention, health monitoring, and interactive electronics as well as for smart prosthetics and intelligent soft robotics.
