摘要
甲醛是一种具有刺激气味的无色气体，对人体具有较大危害。它在环境中对人类的危害引起人们的高度重视，因此，对这种有毒物质的监测显得尤为重要。系统采用单片机STC89C52RC进行控制，以ME3M—CH2O型甲醛传感器电化学效应进行数据采集，设计了一种甲醛浓度测量装置，完成了该装置的硬件电路和软件部分设计，经测试表明：系统的误差在±0．02ppm范围内，具有精度高、性能稳定、反应迅速、性价比高，便携方便，而且结构简单、使用简洁方便，可广泛应用于室内环境甲醛浓度检测。
Formaldehyde, a colorless gas with stimulating smell,is harmful to human. Now much attention has been paid to the harm in the environment, so it is very important to monitor the toxic. A measuring device to test formaldehyde concentration is designed with STC89C52RC to control the system and with ME3M -CH20 as sensor to analyze the data. It shows that the design with a tolerance of about 2ppm can be widely used to test the indoor formaldehyde concentration owing to the following characteristics：high in precision, stable in performance, rapid in reaction, high in cost performance, simple in structure, convenient to carry and easy to use.
作者
白国政
Bai Guozheng(Teacghing Affairs Department, Shaanxi Polytechnic Institute, Xianyang 712000, China)
出处
《陕西工业职业技术学院学报》
2018年第1期6-9,共4页
Journal of Shaanxi Polytechnic Institute
关键词
自动检测
智能
ME3M—CH20
便携
Automatic detection
Intelligence
ME3M - CH2O
Convenient to carry
