本文選題：熒光光纖　切入點(diǎn)：溫度　出處：《沈陽(yáng)工業(yè)大學(xué)》2017年碩士論文

【摘要】：微波周圍存在強(qiáng)電磁場(chǎng),利用熱電偶等傳統(tǒng)溫度傳感器在微波場(chǎng)中進(jìn)行溫度測(cè)量時(shí),由于傳統(tǒng)溫度傳感器是由金屬材料制成的,會(huì)對(duì)測(cè)量結(jié)果產(chǎn)生一定的影響。而光纖溫度傳感器傳導(dǎo)的是光信號(hào),能有效地避免電磁干擾,因此在微波場(chǎng)的溫度測(cè)量中有很好的應(yīng)用前景。通過(guò)查閱文獻(xiàn),在了解了光纖溫度測(cè)量技術(shù)的基礎(chǔ)上,以熒光光纖作為溫度傳感器,設(shè)計(jì)了熒光光纖溫度測(cè)量系統(tǒng),實(shí)現(xiàn)微波場(chǎng)中的溫度測(cè)量。著手于提高測(cè)量系統(tǒng)的靈敏度、測(cè)溫范圍和精度,進(jìn)行了一系列的理論分析和實(shí)驗(yàn)研究。設(shè)計(jì)了以C8051F060單片機(jī)為核心的熒光光纖溫度測(cè)量系統(tǒng),完成了系統(tǒng)硬件電路的搭建。對(duì)熒光材料的光譜特性進(jìn)行了理論分析,利用光譜儀進(jìn)行了熒光材料的光譜實(shí)驗(yàn),從峰值波長(zhǎng)和相對(duì)發(fā)光強(qiáng)度兩個(gè)方面對(duì)選定的熒光材料的光譜進(jìn)行了分析和比較�；跓晒鈮勖臏y(cè)溫原理,對(duì)光譜實(shí)驗(yàn)中相對(duì)發(fā)光強(qiáng)度較強(qiáng)的熒光材料進(jìn)行了溫敏特性實(shí)驗(yàn),得到了熒光材料的溫敏特性曲線,為溫度測(cè)量系統(tǒng)溫敏材料的選擇提供理論依據(jù),便于提高系統(tǒng)的靈敏度和測(cè)溫范圍。建立了最小二乘擬合法、FFT擬合法和積分面積比值法的數(shù)據(jù)處理模型,并對(duì)三種算法進(jìn)行了理論上的推導(dǎo),然后利用VC++6.0編寫的上位機(jī)程序,對(duì)三種算法進(jìn)行了仿真分析和比較,了解了三種數(shù)據(jù)處理算法的優(yōu)劣,有利于提高系統(tǒng)的測(cè)溫精度。
[Abstract]:There is a strong electromagnetic field around the microwave. When the traditional temperature sensor such as thermocouple is used to measure the temperature in the microwave field, because the traditional temperature sensor is made of metal material, The optical fiber temperature sensor can transmit light signal, which can effectively avoid electromagnetic interference, so it has a good application prospect in the temperature measurement of microwave field. Based on the understanding of optical fiber temperature measurement technology, using fluorescent fiber as temperature sensor, the temperature measurement system of fluorescent fiber is designed to realize temperature measurement in microwave field. A series of theoretical analysis and experimental research are carried out on the range and precision of temperature measurement. A temperature measurement system based on C8051F060 single chip computer is designed. The hardware circuit of the system is built. The spectral characteristics of the fluorescent material are analyzed theoretically, and the spectrum experiment of the fluorescent material is carried out by using the spectrometer. The spectrum of the selected fluorescent material was analyzed and compared from two aspects of peak wavelength and relative luminescence intensity. Based on the principle of temperature measurement of fluorescence lifetime, the temperature sensitive characteristic experiment of the fluorescent material with relatively strong luminescence intensity in the spectral experiment was carried out. The temperature sensitive characteristic curve of the fluorescent material is obtained, which provides a theoretical basis for the selection of the temperature sensitive material in the temperature measurement system. It is convenient to improve the sensitivity and temperature measurement range of the system. The data processing models of the least square fitting method and the integral area ratio method are established, and the three algorithms are deduced theoretically, and then the upper computer program written by VC 6.0 is used. The simulation analysis and comparison of the three algorithms are carried out, and the advantages and disadvantages of the three data processing algorithms are understood, which is helpful to improve the temperature measurement accuracy of the system.
【學(xué)位授予單位】：沈陽(yáng)工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN015

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