用于微波消解儀的熒光光纖測(cè)溫系統(tǒng)的研制

本文共計(jì)2894字；

摘要: 設(shè)計(jì)了一種用于微波消解儀的光纖熒光測(cè)溫系統(tǒng)。系統(tǒng)使用藍(lán)色發(fā)光二極管作為激勵(lì)光源，傳感器在由發(fā)光二極管發(fā)出的一系列光脈沖的激勵(lì)下，產(chǎn)生周期性的熒光衰落信號(hào)。這個(gè)信號(hào)經(jīng)探測(cè)后，首先經(jīng)過一個(gè)低噪聲寬帶放大器，然后再由系統(tǒng)對(duì)每一衰落曲線數(shù)字化。數(shù)字化后的采樣值經(jīng)校正了所有的偏置之后，由PC機(jī)處理，PC機(jī)將采用線性最小二乘曲線擬合技術(shù)，生成對(duì)這些數(shù)據(jù)的最佳指數(shù)擬合曲線，通過最佳擬合曲線求得指數(shù)衰落的時(shí)間常數(shù)。隨后再將時(shí)間常數(shù)與預(yù)先存儲(chǔ)的數(shù)據(jù)對(duì)照表做比較，以確定傳感器的溫度。
關(guān)鍵詞：熒光，光纖，測(cè)溫，微波消解，數(shù)據(jù)處理
The study of fluorescence optical fiber temperature measuring system for microwave digestion instrument

Abstract: A fluorescence optical fiber temperature measuring system applying to microwave digestion instrument has been designed. The blue LED is adopted as the excitation light source in this system. The sensor brings periodic fluorescence decay signal under the excitation of a series of light pulse from LED. After having been detected, the signal is amplified by a low noise wide band amplifier firstly. Then every decay curve is digitized. The method of least squares curve fitting is used to make the best exponential fitting curve with these data. Finally,

目錄：
1 熒光測(cè)溫機(jī)理
2 熒光光纖測(cè)溫系統(tǒng)組成
3 實(shí)驗(yàn)
4 結(jié)論
參考文獻(xiàn):
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