本文關鍵詞： 顆粒物濃度 光散射 Mie散射 Arduino LCD顯示　出處：《寧夏大學》2015年碩士論文　論文類型：學位論文

【摘要】：近年來沙塵暴天氣發(fā)生的頻率雖有所降低,但土地沙化仍呈現(xiàn)不斷增加的趨勢。同時,由于城市化進程的不斷推進,土地荒漠化造成的沙塵和城市污染造成的霧霾等氣溶膠現(xiàn)象在很多方面相互影響,甚至形成惡性循環(huán)。如何高效、實時、精確地監(jiān)測沙塵環(huán)境中顆粒物濃度,成為目前環(huán)境大氣領域研究的一項重要課題。鑒于相關儀器的價格、性能等問題,本論文基于夏普生產(chǎn)的GP2Y1010AU0F傳感器開發(fā)了一款新型沙塵氣溶膠濃度測量系統(tǒng)。該儀器制作成本較低、測量精度良好,可用于土壤風蝕、氣溶膠濃度測量等研究。首先,本文介紹了現(xiàn)有顆粒物濃度測量技術及其基本原理,并對其進行比較,由此說明基于光散射原理的非接觸式顆粒濃度測量技術的諸多優(yōu)點；然后給出了基于光散射原理進行氣溶膠濃度測量的物理原理,推導了球形粒子電磁散射問題的Mie散射基本解,進而得到顆粒系統(tǒng)中群體散射光強度與個體散射光強度之間的關系；最后重點介紹了所設計測量系統(tǒng)的軟硬件結構設計,以及對系統(tǒng)的校正、驗證和儀器相關實驗結果的分析,并將其應用在不同環(huán)境中顆粒物的測量,得到較好的結果,對后續(xù)系統(tǒng)改善方法及應用領域進行展望。本文的相關研究工作,對于后續(xù)在風沙物理學中的風蝕量的測量、沙塵及霧霾等氣溶膠顆粒濃度測量的研究具有一定的意義。
[Abstract]:Although the frequency of sandstorm weather has decreased in recent years, the land desertification is still showing an increasing trend. At the same time, due to the continuous progress of urbanization, Aerosol phenomena such as dust caused by land desertification and haze caused by urban pollution affect each other in many ways, and even form a vicious circle. It has become an important subject in the field of environment and atmosphere. In view of the price and performance of related instruments, Based on the GP2Y1010AU0F sensor produced by Sharp, a new dust aerosol concentration measurement system is developed in this paper. The instrument has the advantages of low cost and good measurement precision. It can be used in the study of soil wind erosion and aerosol concentration measurement. In this paper, the existing particle concentration measurement technology and its basic principle are introduced and compared, which shows the advantages of non-contact particle concentration measurement technology based on light scattering principle. Then the physical principle of aerosol concentration measurement based on the principle of light scattering is given, and the basic solution of Mie scattering of spherical particles is derived. Then the relationship between the mass scattered light intensity and the individual scattering light intensity in the particle system is obtained. Finally, the software and hardware structure design of the system is introduced, and the calibration, verification and analysis of the experimental results of the system are also given. It is applied to the measurement of particulate matter in different environments, and good results are obtained, and the improvement methods and application fields of the follow-up system are prospected. The relevant research work in this paper is concerned with the measurement of wind erosion in wind and sand physics. The study of aerosol particle concentration measurement, such as dust and haze, has some significance.
【學位授予單位】：寧夏大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：X851

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