【正文】 畢 業(yè) 論 文 （科 學(xué) 研 究 報 告） 題 目 基于 NDIR 的 CO 濃度探測器研制 （硬件） 院 (系 )別 專 業(yè) 級 別 2021 學(xué) 號 姓 名 指導(dǎo)老師 華 僑 大 學(xué) 教 務(wù) 處 2021 年 5 月 i 摘 要 本論文的內(nèi)容為基于 NDIR 的 CO 濃度探測器研制的硬件部分，具體內(nèi)容可分為 CO 濃度探測器的現(xiàn)狀、發(fā)展趨勢和分類，基于 NDIR 的 CO 濃度探測器的原理，探測器的 硬件設(shè)計，基于實(shí)驗(yàn)室條件下探測器的制作，以及探測器的性能調(diào)試。 論文從 CO 濃度探測器的現(xiàn)狀、發(fā)展趨勢和分類開始，詳細(xì)介紹了 CO 探測器的各個方面，探討了研制 CO 濃度探測器的意義與基于 NDIR 的 CO 濃度探測器的實(shí)現(xiàn)原理。論文介紹了基于 NDIR 的 CO濃度探測器中的紅外光源與紅外探測器的選擇，并詳細(xì)介紹了紅外光源與紅外探測器的選擇理由以及性能?；?NDIR 的 CO 濃度探測器的核心器件為 MIRL17900 紅外光源與 TPS2534 紅外探測器。在這兩個核心器件的基礎(chǔ)上，論文介紹了配套的光源調(diào)制，實(shí)驗(yàn)氣室，后續(xù)放大濾波電 路的設(shè)計與制作，以及擴(kuò)展電路的設(shè)計。 論文中所制作的硬件部分均在實(shí)驗(yàn)室條件下完成，各個硬件在現(xiàn)有的制作條件下盡可能的達(dá)到理想效果。論文中還具體闡述了硬件制作過程和制作過程中的注意事項(xiàng)。制作的硬件系統(tǒng)經(jīng)過測試與調(diào)試，根據(jù)實(shí)驗(yàn)中所闡述的方法制作出來的基于 NDIR 的 CO 濃度探測器符合實(shí)驗(yàn)要求，達(dá)到了預(yù)期目的。 基于 NDIR 的 CO 濃度探測器硬件部分研制的實(shí)現(xiàn)證明了在實(shí)驗(yàn)室條件下也可以研制出 CO 濃度探測器，并且在這個基礎(chǔ)上可以繼續(xù)完善，使之成為一個可以在實(shí)際生產(chǎn)生活中廣泛應(yīng)用的產(chǎn)品。 關(guān)鍵詞： TPS2534， MIRL17900， NDIR， CO ii ABSTRACT This paper based on the content of NDIR concentration of CO detector developed hardware, the concrete content can be divided into the concentration of CO detector39。s situation, development trend and classification based on the NDIR, the principle of concentration of CO detector, the probe39。s hardware design, based on the laboratory condition of production, and detector probe the performance test. The concentration of CO detector papers from the current situation, development trend and classification start, introduces CO detector each aspect, discusses the significance of the concentration of CO detector developed based on NDIR with the realization of the principle of concentration of CO detector. This paper introduces the NDIR concentration of CO detector based on the infrared light source and infrared detector choice, and introduces the infrared light source and infrared detector reasons for choice and performance. Based on the NDIR concentration of CO detector for MIRL17 core device with infrared light TPS2534900 infrared detectors. In these two core device basis, this paper introduces a matching lamphouse modulating, experimental gas chamber, the subsequent amplification filter circuit design and production, and expansion circuit design. The paper made in the laboratory hardware ponents are plete, under the condition of different hardware in the existing production conditions as far as possible to achieve the ideal effect. Paper also elaborated specifically hardware manufacture process and manufacture process in precautions. Making hardware system after testing and debugging, elaborate the according to experiment the method of making based on the NDIR out the concentration of CO detector conforms to experimental requirements, the expected purpose is reached. Based on the NDIR concentration of CO detector the realization of hardware ponents in developed proved laboratory conditions can also developed the concentration of CO detector, and on this basis can continue perfecting to bee a living in practical production extensive application of products. Keywords： TPS2534， MIRL17900， NDIR， CO iii 目 錄 第一章 緒論 ......................................................................................................... 1 氣體探測器現(xiàn)狀及發(fā)展趨勢 ............................................. 1 氣體探測器現(xiàn)狀 .................................................. 1 氣體探測器發(fā)展趨勢 .............................................. 2 CO 濃度探測的意義 .................................................... 3 CO 探測傳感器的分類 .................................................. 4 電化學(xué)氣體傳感器 ................................................ 5 催化可燃?xì)怏w傳感器 .............................................. 5 固態(tài)傳感器 ...................................................... 6 紅外傳感器 ...................................................... 6 基于 NDIR 紅外分析現(xiàn)狀 ............................................... 7 第二章 CO探測基本原理 ..................................................................................... 8 朗伯 比爾 (LambertBeer)吸收定律 ...................................... 8 朗伯 比爾定律的兩個重要參數(shù) ..................................... 8 紅外光在電磁波譜中的位置 ............................................. 9 CO 對紅外光的吸收 ................................................... 10 基于 NDIR 的 CO 探測器原理 ............................................ 11 第三章 CO探測系統(tǒng)設(shè)計 ....................................................................................13 總體方案設(shè)計 ........................................................ 13 調(diào)制紅外光源設(shè)計 .................................................... 13 紅外光源的選擇 ................................................. 13 調(diào)制紅外光源的實(shí)現(xiàn) ............................................. 16 氣室設(shè)計 ............................................................ 17 紅外探測器及選擇 .................................................... 17 紅外熱探測器 ................................................... 18 紅外光探測器 ................................................... 18 紅外探測器的選用 ............................................... 18 整體電路設(shè)計 ........................................................ 20 穩(wěn)壓源電路設(shè)計 ................................................. 20 放大濾波電路設(shè)計 ............................................... 21 模數(shù)轉(zhuǎn)換電路設(shè)計 ............................................... 23 華僑大學(xué)機(jī)電及自動化學(xué)院本科畢業(yè)設(shè)計 (論文 ) 1