Zhang Yun, Xiao Zonglin, Liu Binggang, Ren Xiaoming, Liu Cirui
State Key Laboratory of Electromechanical Integrated Manufacturing of High-Performance Electronic Equipments, Xidian University, Xi'an 710071, China.
School of Mechano-Electronic Engineering, Xidian University, Xi'an 710071, China.
Micromachines (Basel). 2024 Jul 31;15(8):991. doi: 10.3390/mi15080991.
In poor sanitary conditions, people need to wear masks to protect the health of their respiratory system. Meanwhile, it is necessary for patients with respiratory diseases to have real-time measurement on respiratory rate when wearing masks. Thermoelectric generation provides a new approach and method for powering and sensing small low-power devices, and has good application prospects in smart masks. In view of this, a novel sensible smart mask using micro thermal-electric energy conversion elements (TECE) is proposed in this paper, which can detect and display the respiratory rate in real time. First, the temperature conversion characteristic of micro TECE represented by the thermoelectric generator module is analyzed. Second, the respiratory characteristics of the human body are studied, and the respiratory rate sensing effect based on micro TECEs is analyzed and verified. Then, a sensible smart mask, which can show respiratory rate in real time, is developed by integrating MCU and OLED module. Finally, human respiratory rate experiments are conducted, the experimental results verified the effectiveness and accuracy of the proposed sensible smart mask.
在卫生条件差的情况下，人们需要佩戴口罩来保护呼吸系统健康。与此同时，患有呼吸系统疾病的患者在佩戴口罩时对呼吸频率进行实时测量是很有必要的。热电发电为小型低功耗设备的供电和传感提供了一种新的途径和方法，在智能口罩中具有良好的应用前景。鉴于此，本文提出了一种使用微型热电能量转换元件（TECE）的新型传感智能口罩，它可以实时检测并显示呼吸频率。首先，分析了以热电发电机模块为代表的微型TECE的温度转换特性。其次，研究了人体的呼吸特性，并对基于微型TECE的呼吸频率传感效果进行了分析和验证。然后，通过集成MCU和OLED模块开发了一种能够实时显示呼吸频率的传感智能口罩。最后，进行了人体呼吸频率实验，实验结果验证了所提出的传感智能口罩的有效性和准确性。
