摘要随着《苍穹之下》于2015年在网络的火热传播，越来越多的人对PM2。5有了更深的认识，对这种平时看不见摸不着的可能的对人类健康造成巨大伤害的微小粒子，人们对其产生了巨大的恐惧感，因此如何对PM2。5进行精确地监测便受到了人们普遍的重视，特别是能方便携带并支持工作人员通过简单便捷的操作就能得到空气质量的精确数据的监测仪更是炙手可热。这种仪器在当今单片机等集成电路芯片技术高度发展成熟的科技社会中，想实现其实并不是那么困难，成功的把单片机与各种传感器结合起来产出的高精度检测设备的例子已经不胜枚举。要完成监测仪的设计，主要是选取合适的单片机种类，与灰尘传感器与单片机的相关技术，进行搭配设计，以实现对PM2。5浓度的模拟量采集，并通过AD转换技术，使其化成数字量，经过一系列的芯片处理计算再与网上大数据进行比对后，在lcd上显示。一款精确地测量仪器能让人们直观的对身边的环境质量做成判断，然后选择更宜居的地点，对生活水平的提高有巨大的帮助，更可以提醒人类改善环境，发展与环境相协调的重要性，进而对环境起到积极地作用。80188

毕业论文关键词 PM2。5 监测仪 传感器 单片机 污染程度

毕业设计说明书外文摘要

Title  The Design of The Environmental Monitor Counting PM2。5               

Abstract With the hot spread of "under the sky" on the internet in 2015。As a result,more and more people have a deep understanding of PM2。5 which invisible and untouchable but may do great harm to our health，people have a great fear of feeling for these tiny particles。So how to monitorthe PM2。5 accurately has received widespread attention, especially the monitor which is convenient to carry and support staff get accurate data of air quality through a simple and convenient operation。Inventing a instrument mentioned above is not so difficultin nowaday society that integrated circuit chip technology is highly developed and mature。 There are countless successful examples for combinating the SCM with a variety of sensor to create a high precision test equipment。In order to acchive the design of monitor,we need to choose the right type of single chip,and the dust sensor and SCM related technologies, design suitably。In order to achieve analog acquisition of the concentration of PM2。5。Then through the AD conversion technology,make it into digital quantity。After a series of chip processing calculation with big data online, displayed on the LCD finally。A precise measuring instrument not only can provide a way that people can judge of the environmentquality around easily。Then people can select more livable place,but also remind the human improving the environment and the importance of balancing between the development and the environment,so it has a positive effect on the environment。

Keywords PM2。5  monitor  sensor  SCM  the degree of pollution

目   次

1  引言 1

1。1  课题意义 1

1。2  监测仪通常采用的监测原理 1

2  系统硬件部分设计 4

2。1  硬件总体设计 4

2。2  系统采用的主要芯片及对应模块 4

3  软件部分