可穿戴柔性湿度传感器开发及在人体呼吸模式检测中的应用
Fabrication of Wearable Flexible Humidity Sensor and Its Application in Human Breathing Pattern Detection
马士腾 1郗广帅 1张冬至 1周兰娟 1陈璨1
作者信息
- 1. 中国石油大学(华东)控制科学与工程学院,山东青岛 266580
- 折叠
摘要
针对传统湿度传感器存在测量范围窄、响应时间长和稳定性差等问题,开发了一种基于石墨相氮化碳(g-C3 N4)与TiO2 复合材料的聚酰亚胺(PI)基底电容式柔性湿度传感器.通过扫描电镜(SEM)分析了g-C3 N4/TiO2 复合材料的多孔结构和形态特性,并采用饱和盐溶液法对g-C3 N4/TiO2 柔性湿度传感器在不同湿度下的湿敏性能、湿滞特性、响应和恢复速率等进行测试.结果表明,g-C3 N4/TiO2 柔性湿度传感器具有相对湿度检测范围宽(0%～97%)、湿度迟滞低(1.48%)、响应时间短(3.5 s)等优势,可实现人体呼吸频率、呼吸强度以及比奥呼吸、潮式呼吸、睡眠暂缓呼吸等模式的检测.
Abstract
Traditional humidity sensors have the problems of narrow measurement range,long response time and poor stability.In this paper,a capacitive humidity sensor based on graphitic carbon nitride(g-C3 N4)and TiO2 composite is fabricated on the flexible PI substrate.The porous structural and morphological properties of the g-C3 N4/TiO2 composite are analyzed by scanning electron microscope(SEM).The properties of humidity sensitivity,hysteresis,response and recovery rate for the flexible humidity sensor are tested under different humidity conditions and by using saturated salt solution method.The results showed that the g-C3 N4/TiO2 composite thin film humidity sensor has a wide relative humidity detection range(0%～97%RH),low humidity hysteresis(1.48%),and short response time(3.5 s),which can achieve detection of human respiratory rate,respiratory intensity,as well as modes such as bio respiration,tidal respiration and sleep apnea.
关键词
电容式柔性湿度传感器/湿度检测/石墨相氮化碳/水热合成Key words
capacitively flexible humidity sensors/humidity detection/graphitic carbon nitride/hydrothermal synthesis引用本文复制引用
基金项目
山东省重点教学改革研究项目(Z2022182)
中国石油大学(华东)教学改革项目(CZ2022025)
中国石油大学(华东)教学改革项目(CM2022073)
中国石油大学(华东)教学改革项目(QN2022020)
出版年
2024
NETL
NSTL
万方数据