A universal respiration sensing platform utilizing surface water condensation
A universal respiration sensing platform utilizing surface water condensation
复制标题
利用地表水冷凝的通用呼吸传感平台
DOI：
10.1039/c8tc04971h
复制
发表时间：
2019-03-14
影响因子：
6.4
通讯作者：
Yu, Yan
中科院分区：
文献类型：
--
作者：
Guan, Yaodong;Song, Yongming;Yu, Yan
呼吸是人体最重要的生理活动之一。对呼吸频率和模式的了解可以确定人体的状况，如睡眠、运动、运动时的无氧阈值等。然而，目前的呼吸传感器材料往往体系复杂，工艺繁琐。本文提出了一种简单的模型呼吸传感器的制备方案，只需要将电极连接到日常生活中使用的常见绝缘材料。其基本工作原理是：（a）导电层形成（氢键诱导水层的导电性主要是由于质子跃迁），（B）信号采集和（c）健康状态反馈。首次研究了不同绝缘材料的物理化学性质对地表水凝结引起的呼吸检测的影响。详细研究了几类材料的不同响应机理，给出了传感材料的选择标准，对进一步研究和工业生产具有很大的参考价值。考虑到舒适性、长期卫生（抗菌）和优异性能等要求，构建了一个完整的人体呼吸监测系统，特别是基于丁腈橡胶膜（NRF）作为可佩戴的呼吸传感器。该传感器实现了几个参数的良好平衡。在吸气和呼气的循环中，信号最大变化3个数量级。这种通用的呼吸传感器图案化设计方案将为应用和产业化提供重要参考，并将对进一步的基础研究产生深远的影响。
Respiration is one of the most vital physiological activities of the human body. Abnormalities in the respiratory rates and patterns can ascertain the condition of the human body, such as sleeping, exercising, anaerobic threshold during athletic activity, etc. However, current respiratory sensor materials are often complicated in system and cumbersome in technology. This paper proposes a simple model breathing sensor preparation scheme that only requires electrodes to be attached to common insulating materials used in daily life. The basic working principle is: (a) conductive layer formation (the conductivity of hydrogen bonding induced water layer is mainly due to the proton transition), (b) signal acquisition and (c) health-status-feedback. The effects of the chemical and physical properties of different insulating materials on the respiratory detection caused by surface water condensation were studied for the first time. The different response mechanisms of several types of materials were studied in detail, and the selection criteria for sensing materials were given, which has great reference value for further research and industrial production. Considering the requirements of comfort, long-term hygiene (antibacterial) and excellent performance, etc., a complete human respiratory monitoring system specifically based on nitrile rubber films (NRFs) as wearable respiration sensors is constructed. This sensor achieved a good balance of several parameters. The signal changes by 3 orders of magnitude in cycles of inhalation and exhalation maximally. This universal patterning design scheme for respiratory sensors will be a significant reference for application and industrialization, and will have a profound impact on further fundamental research.