本研究應用熱輻射的原理，建立一套紅外線測溫系統，它包括有光學部份、偵測器、及電子部份。此系統可偵測的波段為紅外光波長1310nm、溫度範圍600~4000℃、時間響應(rise time) 2μs、空間解析度(spatial resolution)為400μm。溫度低於1200℃可藉由K型熱電偶作校正曲線，以找出溫度與輸出電壓的關係，但當溫度高於1200℃時則需藉由普朗克定律推導理論的溫度、電壓間的關係；在校正曲線的溫度範圍內，其誤差在低溫為±80℃、在高溫(1200℃附近)為±20℃。紅外線測溫系統架設完成後，應用於Nd:YAG脈衝雷射點銲過程以偵測其溫度變化，實驗試片為304不?袗?片(stainless steel)，以固定的脈衝雷射持續時間(duration time)為7ms、不同的脈衝雷射能量(pulse energy)為1245~5313mJ進行偵測，以證明紅外線測溫系統應用於雷射點銲加工的可行性。

The study aims to develop an infrared temperature-sensing system by applying to thermal radiation theory. The system consists of an optic unit, a photodetector, and an electronic unit. This system detects thermal radiation at 1310 nm wavelength, the temperature range of the system is 600~4000℃, rise time 2μs, spatial resolution 400μm. The calibration was performed in the temperature low at 1200℃ by using a K-type thermocouple that can gain between temperature and output voltage relations, but beyond the temperature 1200℃ applying to Planck’s law as calculate to predict. In the calibrated temperature range, the measurement error is ±80℃ for the low temperatures and ±20℃ for the high temperatures. The system was used to measure temperature variation during Nd:YAG pulse laser welding process. Experiments ware performed with stainless steel plates as specimen radiation by a laser pulse of 7ms duration time and various energy in the rang of 1245~5313mJ. The experimental results show the feasibility of the infrared temperature-sensing system in application of Nd:YAG pulse laser welding process.

目錄---------------------------------------------------------------------------Ⅰ
圖目錄-----------------------------------------------------------------------Ⅳ
表目錄------------------------------------------------------------------------Ⅵ
中文摘要---------------------------------------------------------------------Ⅶ
英文摘要---------------------------------------------------------------------Ⅷ


第一章 緒論-------------------------------------------------------------------1
1.1 前言---------------------------------------------------------------1
1.2 文獻回顧---------------------------------------------------------2
1.3 研究動機與目的------------------------------------------------5
第二章 紅外線溫度量測理論----------------------------------------------7
2.1 紅外線歷史發展-------------------------------------------------7
2.2 紅外線領域定義------------------------------------------------8
2.3 熱輻射相關理論----------------------------------------------9
2.3.1黑體輻射理論---------------------------------------------9
2.3.2 普朗克分佈定律---------------------------------------10
2.3.3 維恩位移定律------------------------------------------11
2.3.4 史蒂芬-波茲曼定律---------------------------------12
2.3.5 輻射率--------------------------------------------------13
2.3.6 大氣窗透射--------------------------------------------14
2.4紅外線偵測器--------------------------------------------------15
2.4.1 光子型紅外線偵測器---------------------------------19
2.4.2 感測元之特性分析-----------------------------------20
第三章 紅外線測溫系統的建立---------------------------------------22
3.1 非接觸式高溫量測------------------------------------------22
3.2 基本量測系統的建立---------------------------------------23
3.2.1 系統的基本架構--------------------------------------23
3.2.2 校正實驗-----------------------------------------------26
3.2.3 基本系統的缺失與改良-----------------------------29
3.3 光纖系統的建立---------------------------------------------29
3.3.1 系統架構------------------------------------------------31
3.3.2 校正曲線------------------------------------------------32
3.3.3 系統特性------------------------------------------------35
第四章 實際應用─雷射點銲過程的溫度變化----------------------36
4.1 點銲設備------------------------------------------------------36
4.2 實驗步驟------------------------------------------------------36
4.3 數據處理------------------------------------------------------38
4.4 點銲過程的溫度分佈---------------------------------------41
第五章 結論與建議-------------------------------------------------------45
參考文獻---------------------------------------------------------------------47

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