蜂鸣器
甲醛
警报
微控制器
STM32型
计算机科学
材料科学
环境科学
工艺工程
嵌入式系统
化学
工程类
复合材料
电信
有机化学
炸薯条
作者
Meili Liu,Caizhong Zhang
出处
期刊:Journal of physics
[IOP Publishing]
日期:2021-02-01
卷期号:1780 (1): 012021-012021
被引量:2
标识
DOI:10.1088/1742-6596/1780/1/012021
摘要
Abstract It is a well-known thing that formaldehyde can seriously endanger human health. During decoration, some decoration materials, including furniture, will contain a large amount of formaldehyde, and some wall paint will also emit a lot of formaldehyde. Therefore, how to judge that the harmful gas in a house exceeds the standard has become a headache. In response to this problem, this article has designed an intelligent formaldehyde detection system, which can accurately detect the concentration of harmful gases in the room and then alarm. The operation is simple.The system consists of STM32F103C8T6 microcontroller circuit, LCD1602 liquid crystal display circuit, and formaldehyde detection sensor circuit. The voltage value and formaldehyde concentration value before formaldehyde conversion can be displayed in real time as the formaldehyde concentration changes. If the concentration of formaldehyde in the air is higher than the body’s tolerance range, the buzzer will sound a “beep” alarm, otherwise it will not sound.
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