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研究生:林哲以
研究生(外文):Che-I Lin
論文名稱:應用於焦電型紅外線感測器的多焦點菲涅爾透鏡之設計技術研究
指導教授:陳奇夆
指導教授(外文):Chi-Feng Chen
學位類別:碩士
校院名稱:國立中央大學
系所名稱:機械工程學系
學門:工程學門
學類:機械工程學類
論文出版年:2020
畢業學年度:108
語文別:中文
論文頁數:82
中文關鍵詞:焦電型紅外線感測器多焦點透鏡菲涅爾透鏡二次光學元件黑體輻射能量
外文關鍵詞:Pyroelectric infrared sensorCompound Fresnel lensSecondary optical elements
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本論文主要在研究應用於焦電型紅外線移動物體感測器的多焦點式複合型菲涅爾透鏡之光學設計技術。首先,根據幾何光學追跡理論,推導感測器內部的光學系統之追跡關係式,並從中建立演算程式以進行分析。根據上述方法擬合出適當的複合型菲涅爾透鏡的幾何參數,並使用光學追跡設計軟體驗證其有效性;接著,進一步分析此感測器內部的光學系統,如對移動人體的感應靈敏度和有效感測的空間範圍;最後,使用上述工具,進行光學系統功效之提昇設計,提昇的重點主要有三項:增加近距離感測區間1~3公尺、感測角度增至半角50°、安裝高度增至2.8 公尺,如此以提高感測靈敏度。
The main objective of this project is to develop technology of compound Fresnel lens for pyroelectric infrared sensor (PIR sensor). This project is based on the theory of geometric optical tracing and derives mathematical relations. The two-dimensional contour of the compound Fresnel lens can be quickly design by establishing a calculation program. We use optical tracking software to verify the validity and accuracy of the self-built program. The compound Fresnel lens is a compound of sub-Fresnel lenses with different focal lengths. Here each sub-Fresnel lens works on a moving object at a specific distance to increase the sensing range and sensitivity of pyroelectric infrared sensor. After optical design and improvement by our research. The pyroelectric infrared sensing system which can reached the fallowing relevant specifications such as : The Fresnel lens calculation program can change the focal length as required, The aperture size and lens center position can be designed according to different requirements, Sensing half-angle : 50°, Detection distance : 1~12m, Sensor installation height : 2m and 2.8m.
In this study, the optical tracing calculation program of the compound Fresnel lens was used to successfully design the geometric parameters. And use optical design software to analyze the sensitivity and effective sensing range of this system to moving human body.
中文摘要 I
英文摘要 II
致謝 III
目錄 IV
表目錄 VII
圖目錄 IX
第一章、緒論1
1-1前言1
1-2研究動機與目的2
1-3文獻回顧4
1-4論文架構10
第二章、基礎理論11
2-1光的折射與反射11
2-2稜鏡偏轉角11
2-3高斯光學12
2-4慧形像差13
2-5餘弦四次方定理14
2-6黑體輻射15
2-7維恩位移定率16
2-8大氣穿透效應17
2-9人體表面積計算17
2-10焦電效應18
第三章、研究背景架構19
3-1基本架構19
3-2紅外線感測器比較20
3-3焦電型紅外線感測器做動原理22
3-4焦電型紅外線感測器選擇24
3-5複合型菲涅爾透鏡工作原理25
第四章、焦電型紅外線感測器系統之初階技術模擬分析29
4-1 菲涅爾透鏡設計方法29
4-2 焦電型紅外線感測器模組規格以及實際應用規範32
4-3複合型菲涅爾透鏡編排設計35
4-3-1透鏡材料分析35
4-3-2感測範圍以及距離關係式35
4-3-3透鏡焦距估算37
4-3-4透鏡偵測範圍計算39
4-3-5各層透鏡通光孔面積比例40
4-4光學模擬數值分析43
4-4-1人體熱輻射能量計算43
4-4-2 焦電型紅外線感測器系統輻射能量接收率45
4-4-3水平軸感測範圍計算46
4-4-4感測面輻射通量分析47
第五章、焦電型紅外線感測器二次光學元件改良分析52
5-1邊緣透鏡接收52
5-2透鏡安裝高度擴展56
5-3 135公分待測物詳細分析60
第六章、結論與未來展望63
6-1結果與討論63
6-2未來展望64
參考文獻 65
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