Zhou Song, Li Hui, Shen Shengnan, Li Siyu, Wang Wei, Zhang Xiaotie, Yang James
a School of Power and Mechanical Engineering , Wuhan University , Wuhan , China.
b Key Laboratory of Healthy & Intelligent Kitchen System Integration of Zhejiang Province , Zhejiang Ningbo , China.
J Occup Environ Hyg. 2017 Nov;14(11):D173-D178. doi: 10.1080/15459624.2017.1366036.
This article presents an intelligent Filtering Facepiece Respirator (FFR) with a self-adjustable ventilation fan for improved comfort. The ventilation fan with an intelligent control aims to reduce temperature, relative humidity, and CO concentrations inside the facepiece. Compared with a previous version of the FFR, the advantage of this new FFR is the intelligent control of the fan's rotation speed based on the change in temperature and relative humidity in the FFR dead space. The design of the control system utilizes an 8-bit, ultra-low power STC15W404AS microcontroller (HongJin technology, Shenzhen, China), and adopts a high-precision AM2320 device (AoSong electronic, Guangzhou, China) as temperature and relative humidity sensor so that control of temperature and relative humidity is realized in real time within the FFR dead space. The ventilation fan is intelligently driven and runs on a rechargeable lithium battery with a power-save mode that provides a correspondingly longer operational time. Meanwhile, the design is simplistic. Two experiments were performed to determine the best location to place the fan.
本文介绍了一种带有可自我调节通风风扇的智能过滤式面罩呼吸器（FFR），以提高舒适度。带有智能控制的通风风扇旨在降低面罩内部的温度、相对湿度和一氧化碳浓度。与FFR的前一版本相比，这款新型FFR的优势在于基于FFR死腔内温度和相对湿度的变化对风扇转速进行智能控制。控制系统的设计采用了一款8位超低功耗STC15W404AS微控制器（中国深圳宏晶科技），并采用高精度AM2320器件（中国广州奥松电子）作为温度和相对湿度传感器，从而在FFR死腔内实时实现对温度和相对湿度的控制。通风风扇由智能驱动，使用可充电锂电池运行，并具备节能模式，可提供相应更长的运行时间。同时，该设计较为简单。进行了两项实验以确定放置风扇的最佳位置。
