本文關(guān)鍵詞： 二維振鏡 二維動態(tài)激光掃描 上位機(jī)軟件 圖像軌跡 軌跡解碼　出處：《武漢郵電科學(xué)研究院》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：二維動態(tài)激光掃描系統(tǒng)以其高速、高效等特點(diǎn)已廣泛應(yīng)用于激光加工、圖形傳輸、醫(yī)用CT儀器和激光表演等多個場合。目前市場上振鏡掃描設(shè)備多用于工業(yè)生產(chǎn)，其價格高昂，不適于應(yīng)用在實(shí)踐教學(xué)中。 基于此，設(shè)計(jì)了一款投入小、專用于教學(xué)的二維振鏡激光掃描演示系統(tǒng)。硬件上采用STM32單片機(jī)作為下位機(jī)控制器以實(shí)現(xiàn)步進(jìn)電機(jī)的偏轉(zhuǎn)和激光的亮滅,從而對二維激光的掃描軌跡進(jìn)行解碼。另外通過上位機(jī)界面輸入掃描軌跡圖形。然后采用圖像記錄儀（由TMS320DM642、CCD攝像頭和液晶顯示器組成）記錄掃描的圖形軌跡。軟件上，系統(tǒng)建立了二維動態(tài)激光掃描的數(shù)學(xué)模型，并對X-Y雙振鏡掃描控制算法和掃描原理性誤差的關(guān)鍵技術(shù)性問題作了詳細(xì)的分析，采用軟件補(bǔ)償?shù)姆椒ń鉀Q了掃描引起的圖形失真。同時，系統(tǒng)采用高效的圖像處理算法，實(shí)時記錄激光掃描的軌跡。 最后對系統(tǒng)軟件和硬件進(jìn)行了聯(lián)合測試實(shí)驗(yàn)，結(jié)果表明： (1)系統(tǒng)軌跡掃描及顯示結(jié)果準(zhǔn)確，特別是每次開始圖形掃描前進(jìn)行校準(zhǔn)，則具有更高的精度。 (2)無論上位機(jī)中輸入何種圖形，圖像記錄儀均能再現(xiàn)上位機(jī)軟件界面上輸入的圖形軌跡，測試結(jié)果達(dá)到了較好的預(yù)期效果，滿足了設(shè)計(jì)要求。 (3)系統(tǒng)具有高精度、低成本、穩(wěn)定性和擴(kuò)展性好等特點(diǎn)，可滿足國內(nèi)市場上對振鏡式激光掃描演示儀器的需求，具有較好的市場前景。
[Abstract]:Two-dimensional dynamic laser scanning system has been widely used in laser processing and graphic transmission because of its high speed and high efficiency. At present, the vibrating mirror scanning equipment in the market is mostly used in industrial production, which is not suitable for practical teaching because of its high price. Based on this, a small investment is designed. The STM32 single chip microcomputer is used as the lower computer controller to realize the deflection of the stepping motor and the laser beam extinction. Thus the scanning trajectory of two-dimensional laser is decoded. In addition, the scanning trajectory graph is input through the upper computer interface. Then the image recorder is used (by TMS320DM642). The CCD camera and liquid crystal display (LCD) record the scanning graph track. On the software, the mathematical model of two-dimensional dynamic laser scanning is established. The scanning control algorithm of X-Y dual vibroscope and the key technical problems of scanning principle error are analyzed in detail. The software compensation method is used to solve the image distortion caused by scanning. The system uses an efficient image processing algorithm to record the tracks of laser scanning in real time. Finally, the system software and hardware are tested jointly, and the results show that: The system track scan and display results are accurate, especially the calibration before each start of the graphics scanning, it has higher accuracy. (2) no matter what kind of graphics is input into the host computer, the image recorder can reproduce the graphic track input from the software interface of the host computer, and the test results reach a better expected effect and meet the design requirements. The system has the characteristics of high precision, low cost, good stability and good expansibility. It can meet the demand of the vibroscope laser scanning demonstration instrument in the domestic market, and has a good market prospect.
【學(xué)位授予單位】：武漢郵電科學(xué)研究院
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN249

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