School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China.
R&D Department of Personal Protective Lifesaving Equipment, Aerospace Life-Supports Industries Ltd., Xiangyang 441003, China.
Sensors (Basel). 2022 Jun 2;22(11):4252. doi: 10.3390/s22114252.
Body temperature provides an insight into the physiological state of a person, and body temperature changes reflect much information about human health. In this study, a garment for monitoring human body temperature based on fiber Bragg grating (FBG) sensors is reported. The FBG sensor was encapsulated with a PMMA tube and calibrated in the thermostatic water bath. The results showed that FBG sensors had good vibration resistance, and the wavelength changed about 0-1 pm at a 0.5-80 Hz vibration frequency. The bending path of the optical fiber after integration with clothing is discussed. When the bending radius is equal to or greater than 20 mm, a lower bending loss can be achieved even under the bending and stretching of the human body. The FBG sensor, the optical fiber, and the garment were integrated together using hot melt glue by the electric iron and the hot press machine. Through experiments of monitoring human body temperature, the sensor can reach the human armpit temperature in about 10-15 min with the upper arm close to the torso. Because it is immune to electromagnetic interferences, the smart garment can be used in some special environments such as ultrasonography, magnetic resonance (MR), and aerospace.
体温提供了一个洞察人体生理状态的窗口，体温变化反映了很多关于人类健康的信息。在这项研究中，报告了一种基于光纤布拉格光栅（FBG）传感器的人体体温监测服装。将 FBG 传感器封装在 PMMA 管中，并在恒温水浴中进行校准。结果表明，FBG 传感器具有良好的抗振动性能，在 0.5-80 Hz 的振动频率下，波长变化约为 0-1 pm。讨论了与服装集成后的光纤弯曲路径。当弯曲半径等于或大于 20mm 时，即使在人体的弯曲和拉伸下，也可以实现较低的弯曲损耗。使用电熨斗和热压机，通过热熔胶将 FBG 传感器、光纤和服装集成在一起。通过人体体温监测实验，传感器可以在大约 10-15 分钟内达到人体腋窝温度，此时上臂靠近躯干。由于它不受电磁干扰的影响，智能服装可以用于一些特殊环境，如超声、磁共振（MR）和航空航天。
