發(fā)布時(shí)間：2018-05-20 12:27

  本文選題：水體污染 + 激光雷達(dá)　； 參考：《天津大學(xué)》2014年碩士論文

【摘要】：水是人類賴以生存的基礎(chǔ)資源,目前世界上的可用水資源在不斷的縮減,很多地區(qū)都存在著供水緊張,甚至水資源短缺的情況。國(guó)家對(duì)于環(huán)保的監(jiān)管力度日益加強(qiáng),而對(duì)于水體中的污染物的測(cè)試來說,在線水體污染物的監(jiān)控設(shè)備則是必備的�；瘜W(xué)需氧量(COD)是表明水中受還原性物質(zhì)污染程度的關(guān)鍵指標(biāo)。傳統(tǒng)的化學(xué)法存在很多缺陷,分析速度慢、操作復(fù)雜、造成二次污染等等,而物理法中最常用的紫外吸收法則很難做到實(shí)時(shí)的在線檢測(cè)。目前,市場(chǎng)上的水體檢測(cè)系統(tǒng),大部分被國(guó)外廠商所壟斷,非常急需國(guó)產(chǎn)化。本課題設(shè)計(jì)了一款基于背向散射激光雷達(dá)技術(shù)的在線式水體污染檢測(cè)系統(tǒng),以ARM9+DSP為核心處理器,以激光雷達(dá)技術(shù)為檢測(cè)原理,實(shí)現(xiàn)了水體的在線檢測(cè),目前已經(jīng)完成第一階段的研制工作。論文的主要工作如下:(1)分析了目前環(huán)境測(cè)試的必要性,介紹了當(dāng)前市場(chǎng)上在線式污染水體檢測(cè)儀器的發(fā)展現(xiàn)狀及國(guó)內(nèi)外的研究概況。并闡述了本課題的主要研究?jī)?nèi)容和研究意義。同時(shí),介紹了傳統(tǒng)的COD檢測(cè)方法及其優(yōu)缺點(diǎn),并解釋了為什么目前的主流監(jiān)控設(shè)備無法滿足目前市場(chǎng)需求的原因。在背向散射激光雷達(dá)技術(shù)基礎(chǔ)上,提出了一種新的檢測(cè)水體污染物的方法。(2)在理論研究的基礎(chǔ)上,研制了一款基于背向散射激光雷達(dá)技術(shù)的在線式水體污染檢測(cè)系統(tǒng)。主要完成了主控系統(tǒng)、光發(fā)射電路、光接收電路和信號(hào)處理電路的設(shè)計(jì),并進(jìn)行了分析實(shí)驗(yàn)。(3)通過已完成實(shí)驗(yàn),驗(yàn)證了本方法的可行性。并對(duì)于現(xiàn)在研制中發(fā)現(xiàn)的不足提出了改進(jìn)方案,為下一階段的設(shè)計(jì)打下了良好的基礎(chǔ)。
[Abstract]:Water is the basic resource for human survival. At present, the available water resources in the world are constantly shrinking, water supply is tight in many areas, and even water resources are short. The supervision of environmental protection has been strengthened day by day, and the on-line monitoring equipment is necessary for the testing of pollutants in water bodies. Chemical oxygen demand (COD) is the key index to indicate the pollution degree of reducing substances in water. The traditional chemical method has many defects, such as slow analysis speed, complex operation, secondary pollution and so on. However, the most commonly used ultraviolet absorption law in physical methods is very difficult to achieve real-time on-line detection. At present, most water detection systems in the market are monopolized by foreign manufacturers and are in urgent need of localization. In this paper, an on-line water pollution detection system based on backscatter lidar technology is designed. With ARM9 DSP as the core processor and lidar technology as the detection principle, the on-line detection of water body is realized. At present, the first stage of development has been completed. The main work of this paper is as follows: (1) the necessity of environmental testing is analyzed, and the development of on-line water pollution detection instruments in the market and the research situation at home and abroad are introduced. The main research contents and significance of this subject are expounded. At the same time, this paper introduces the traditional COD detection method and its advantages and disadvantages, and explains why the current mainstream monitoring equipment can not meet the current market demand. On the basis of backscatter lidar technology, a new method of detecting water pollution is proposed. Based on the theoretical research, an on-line water pollution detection system based on backscatter lidar is developed. The main control system, optical transmission circuit, optical receiving circuit and signal processing circuit are designed, and the analysis experiment is carried out. The feasibility of this method is verified by the completed experiment. The improvement scheme is put forward for the deficiency found in the present research and development, which lays a good foundation for the design of the next stage.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：X84;TN958.98

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本文編號(hào)：1914621