本文選題：紅外成像儀　切入點(diǎn)：XC6SLX100　出處：《聊城大學(xué)》2015年碩士論文

【摘要】：醫(yī)用紅外成像系統(tǒng)可以被動(dòng)地接受人體散發(fā)的紅外輻射,是一種新型綠色檢查方式。與以往的常規(guī)診斷方法相比,具有對人體無輻射、無損傷、無接觸等優(yōu)點(diǎn),在醫(yī)療中發(fā)揮著越來越重要的作用。但是目前國內(nèi)大部分的紅外成像儀要從國外引進(jìn),不但價(jià)格昂貴,操作起來也很復(fù)雜,所以研制一種操作簡單、性能優(yōu)良的紅外成像儀越來越受到人們的關(guān)注。本系統(tǒng)就是基于以上問題提出的。本文通過調(diào)研分析國內(nèi)外醫(yī)用紅外成像儀的研究現(xiàn)狀,設(shè)計(jì)了一款簡單、易操作、性能良好的醫(yī)用紅外成像系統(tǒng)。本系統(tǒng)主要包括硬件部分和軟件部分。硬件部分包括圖像獲取、圖像采集傳輸兩部分;軟件部分包括圖像采集模塊軟件設(shè)計(jì)、圖像傳輸模塊軟件設(shè)計(jì)和上位機(jī)軟件設(shè)計(jì)三大部分。圖像獲取部分采用11mm的紅外鏡頭,非制冷焦平面機(jī)芯探測器,具有響應(yīng)快、分辨率高、像元間距小、靈敏度高等優(yōu)點(diǎn)。圖像采集傳輸部分開發(fā)出了基于DSP+FPGA的采集傳輸?shù)挠布O(shè)計(jì)方案。DSP選用TMS320C6416,FPGA選用XC6SLX100,兩者相互結(jié)合實(shí)現(xiàn)優(yōu)勢互補(bǔ),將充分發(fā)揮TMS320C6416自帶PCI總線的強(qiáng)大性能和XC6SLX100的靈活性。對于模擬信號的采集,為了防止干擾源對圖像信號的干擾以及確保各種信號的邏輯關(guān)系,模擬信號在模數(shù)轉(zhuǎn)換之前進(jìn)行了視頻同步分離,一方面提高了視頻質(zhì)量,另一方面方便視頻處理。采集傳輸與上位機(jī)之間的數(shù)據(jù)交換采用PCI接口,利用PCI傳輸速度較快的特點(diǎn)滿足了數(shù)據(jù)量大的圖像傳輸任務(wù)。軟件部分,對圖像采集、圖像傳輸和上位機(jī)這三部分進(jìn)行了軟件設(shè)計(jì),實(shí)現(xiàn)了圖像的實(shí)時(shí)顯示、存儲和回放等功能�；谝陨显O(shè)計(jì),本系統(tǒng)具有能夠?qū)崿F(xiàn)384×288像素圖像的實(shí)時(shí)顯示、存儲、回放、免調(diào)焦并快速便捷的捕捉圖像等功能,能夠滿足設(shè)計(jì)上小型化、低功耗、便捷等要求,在醫(yī)學(xué)中具有較高的應(yīng)用價(jià)值。
[Abstract]:Medical infrared imaging system can passively accept infrared radiation emitted by human body. It is a new type of green inspection method. Compared with the conventional diagnostic methods, it has the advantages of no radiation, no damage, no contact and so on. It plays a more and more important role in medical treatment. But at present, most of the infrared imagers in China are to be imported from abroad, which are not only expensive, but also very complicated to operate, so it is easy to develop a kind of infrared imager. More and more people pay attention to the infrared imager with excellent performance. This system is put forward based on the above problems. Through the investigation and analysis of the research status of the medical infrared imager at home and abroad, a simple and easy to operate infrared imager is designed. The system mainly includes hardware part and software part. The hardware part includes two parts: image acquisition and image acquisition and transmission. The software part includes the software design of image acquisition module. Image transmission module software design and host computer software design three parts. Image acquisition part using 11mm infrared lens, uncooled focal plane core detector, with fast response, high resolution, small pixel spacing, In the part of image acquisition and transmission, the hardware design scheme of acquisition and transmission based on DSP FPGA is developed. DSP chooses TMS320C6416FPGA to select XC6SLX100. The powerful performance of PCI bus and the flexibility of XC6SLX100 will be brought into full play by TMS320C6416. For the acquisition of analog signal, in order to prevent the interference source from interfering to the image signal and to ensure the logic relation of various signals, The analog signal is separated synchronously before analog-to-digital conversion. On the one hand, the video quality is improved; on the other hand, the video processing is facilitated. The data exchange between the acquisition and transmission and the host computer adopts PCI interface. The fast transmission speed of PCI can satisfy the task of image transmission with large amount of data. In the software part, the three parts of image acquisition, image transmission and upper computer are designed, and the real-time display of the image is realized. Based on the above design, the system has the functions of real-time display, storage, playback, no focusing and fast and convenient capture of 384 脳 288 pixel images, and can meet the design of miniaturization, low power consumption, etc. Convenience and other requirements have high application value in medicine.
【學(xué)位授予單位】：聊城大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TP391.41;TN219

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