本文關(guān)鍵詞： 非制冷探測器 干涉圖像 單片機 FPGA　出處：《中北大學》2015年碩士論文　論文類型：學位論文

【摘要】：隨著紅外成像光譜技術(shù)的快速發(fā)展，長波紅外干涉圖像獲取技術(shù)的研究在現(xiàn)代軍事、安防、醫(yī)療、科研、救災等中有著越來越重要的應用，而且干涉圖像獲取技術(shù)的研究對于研制干涉成像光譜儀以及研究目標的光譜圖像信息都有著十分重要的意義. 論文根據(jù)各種靜態(tài)干涉具的特性，選用等效斜楔干涉具作為干涉圖像獲取系統(tǒng)的干涉元件，選用法國ULIS公司的UL04371型非制冷紅外面陣探測器作為紅外干涉圖像的獲取裝置，首先對干涉圖像獲取的探測原理進行了分析，硬件驅(qū)動處理電路采用單片機和FPGA作為控制芯片，單片機STC89C52負責探測器可調(diào)偏置電壓的控制和顯示，F(xiàn)PGA負責探測器的驅(qū)動和數(shù)據(jù)處理，硬件驅(qū)動處理電路與移動部件探測器電路之間采用FFC排線連接，方便探測器位置的調(diào)整，F(xiàn)PGA與上位機LabVIEW之間采用USB2.0接口電路進行通信，LabVIEW上位機完成了USB傳輸數(shù)據(jù)的接收、處理及干涉圖像的顯示。 其次，完成了探測器的FPGA驅(qū)動控制程序、圖像數(shù)據(jù)緩存程序、LabVIEW的圖像數(shù)據(jù)接收與顯示程序，以及單片機的偏置電壓控制與顯示程序的設計，并根據(jù)溫度和偏置電壓對探測器比探測率、噪聲等效溫差以及噪聲電壓的影響，合理的設置了探測器偏置電壓和工作溫度，實現(xiàn)探測器良好的工作性能。 最后，搭建探測器紅外成像實驗平臺，，干涉圖像獲取系統(tǒng)實驗平臺，對成像效果進行了測試，獲得了300℃下黑體的干涉圖像。
[Abstract]:With the rapid development of infrared imaging spectrum technology, the research of long-wave infrared interferometric image acquisition technology has more and more important applications in modern military, security, medical, scientific research, disaster relief and so on. Moreover, the research of interferometric image acquisition technology is very important for the development of interferometric spectrometer and the study of target spectral image information. According to the characteristics of various static interferometers, the equivalent wedge-wedge interferometer is chosen as the interference element of the interferometric image acquisition system, and the UL04371 type uncooled red array detector of ULIS Company of France is chosen as the infrared interferometric image acquisition device. Firstly, the detection principle of interferometric image acquisition is analyzed. The hardware driving and processing circuit uses single chip microcomputer and FPGA as control chip. The MCU STC89C52 is responsible for the control of the adjustable bias voltage of the detector and the display device for the driver and data processing of the detector. The circuit of hardware driving and processing and the circuit of the detector of moving parts are connected by FFC wire arrangement. It is convenient to adjust the position of detector between FPGA and LabVIEW of host computer. The USB2.0 interface circuit is used to communicate with LabVIEW PC to receive and process the data transmitted by USB and display the interference image. Secondly, the FPGA driver control program of the detector, the image data buffer program and the image data receiving and displaying program of LabVIEW, as well as the design of the bias voltage control and display program of the single chip microcomputer are completed. According to the influence of temperature and bias voltage on detector specific detection rate, noise equivalent temperature difference and noise voltage, the detector bias voltage and operating temperature are reasonably set to achieve good performance of the detector. Finally, the infrared imaging experimental platform of detector and the experimental platform of interferometric image acquisition system are set up. The imaging effect is tested and the blackbody interference image is obtained at 300 鈩

本文編號：1531716