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  本文關鍵詞：紅外多波段陣列有源光電標識技術研究　出處：《中北大學》2015年碩士論文　論文類型：學位論文

  更多相關文章： 有源光電標識 目標識別 動態(tài)標識圖形 紅外LED MEMS紅外光源

【摘要】：紅外光電標識作為有源標識技術的重要支撐，其獨特的夜視性，穿透能力強，安全隱蔽性高。在目標身份識別領域的非協(xié)作式識別方式中起著舉足輕重的作用，隨著識別環(huán)境的日益復雜，單一的紅外光電標識裝置已經(jīng)不能滿足。開展紅外多波段陣列有源光電特征標識技術的研究，集合短波紅外、中波紅外和長波紅外的有源標識裝置在目標身份識別領域有著重要的意義和應用場合。 在短波紅外方面的選取仿流明紅LED作為標識光源，其輻射中心波長為940nm；對仿流明紅LED的伏安特性、電光轉化特性和響應時間等特性進行分析，仿流明紅LED的紅外輻射功率受驅動電流的影響，在700mA驅動電流作用下，其相對輻射功率達到38W/cm2。中波和長波紅外的標識光源，選取用MEMS工藝制作的具有微米級的能輻射中波和長波紅外光源的MEMS紅外光源，，其光譜分布范圍為2～14μm，存在兩個輻射峰值；紅外輻射效率隨著驅動電壓的增大可以達到10.85%。選用車載12V或24V電源對多波段標識裝置進行供電，設計基于線性ADP3336穩(wěn)壓芯片和LM2576HV-12芯片的光源陣列驅動電路，多波段陣列標識裝置的光源陣列有平面陣列和三維陣列兩種；對光源陣列進行動態(tài)標識圖形編碼調(diào)制，三維陣列擁有著空間上和光源頻率上的動態(tài)變化，實現(xiàn)頻率和空間上的混合動態(tài)標識圖形編碼調(diào)制，有效的提高標識圖形的安全性。 在不同的背景下，采用不同的紅外熱像儀，對動態(tài)標識圖形的標識效果進行觀察，夜晚的標識效果優(yōu)于白天的標識效果，長波紅外標識在白天幾乎無法辨別；白天背景環(huán)境對標識裝置的影響要大于夜晚背景環(huán)境對標識裝置的影響；三維陣列的標識效果要優(yōu)于平面陣列的標識效果；在500m探測距離可以清晰的觀察到動態(tài)標識圖形，在2km的距離下可以明顯的辨別出標識裝置，光源陣列的閃爍頻率在小于50Hz時可以明顯辨別，總體識別效果良好。為紅外多波段有源光電標識技術在目標識別領域的應用提供了理論依據(jù)。
[Abstract]:As an important support of active identification technology, infrared photoelectric marking has its unique night vision, strong penetration ability, high security and concealment. It plays an important role in non-cooperative identification in the field of target identification. With the increasing complexity of the recognition environment, the single infrared photoelectric marking device can not be satisfied. The research of infrared multi-band array active photoelectric characteristic marking technology is carried out, which gathers short-wave infrared. The active identification device of medium wave infrared and long wave infrared has important significance and application in the field of target identification. In the aspect of short wave infrared, the imitated lumen red LED is selected as the identification light source, and its central wavelength is 940nm; The characteristics of volt-ampere, electro-optic conversion and response time of imitating lumen red LED are analyzed. The infrared radiation power of imitated lumen red LED is affected by driving current, under the action of 700mA driving current. The relative radiation power is 38 W / cm 2. The medium wave and long wave infrared identification light source is selected. The MEMS infrared light source with micron level radiation medium wave and long wave infrared light source is selected by MEMS process. The spectral distribution ranges from 2 渭 m to 14 渭 m, and there are two peak radiation peaks. The infrared radiation efficiency can reach 10.85 with the increase of driving voltage. The multi-band marking device can be powered by 12V or 24V power supply. The driving circuit of light source array based on linear ADP3336 and LM2576HV-12 chip is designed. There are two kinds of light source array of multi-band array identification device: planar array and three-dimensional array. The dynamic identification graphics coding modulation is carried out for the light source array, and the three-dimensional array has the dynamic changes in space and light source frequency, so the hybrid dynamic identification graphics coding modulation is realized in the frequency and space. Effectively improve the security of logo graphics. Under different background, using different infrared thermal imager to observe the marking effect of dynamic marking graphics, the marking effect of night is better than that of day, and the long wave infrared sign is almost impossible to distinguish during the day. The influence of daytime background environment on marking device is greater than that of night background environment on marking device. The identification effect of 3D array is better than that of planar array. The dynamic identification pattern can be clearly observed in the 500m detection range, and the marking device can be clearly identified at a distance of 2 km. The flicker frequency of the light source array can be clearly distinguished when the frequency of the light source array is less than 50 Hz. It provides a theoretical basis for the application of infrared multi-band active photoelectric marking technology in the field of target recognition.
【學位授予單位】：中北大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN219

【參考文獻】

相關期刊論文 前10條

1 曹曉蓓;;綜合敵我識別方法研究[J];電訊技術;2011年12期

2 呂明春;張延坤;王旭;;近場紅外輻射模擬技術與工程應用[J];光電技術應用;2010年01期

3 趙清泉;半導體發(fā)光二極管及其照明的應用[J];光源與照明;2005年03期

4 田英;熊繼軍;關新鋒;李佩青;孟青;丑修建;;MEMS紅外光源研究及其應用[J];微納電子技術;2012年09期

5 徐恒;韓義中;楊永軍;;黑體輻射源的發(fā)展[J];計測技術;2009年05期

6 李守榮,梁平治,屈新萍;紅外微輻射元的研制[J];紅外與毫米波學報;2003年04期

7 周維虎;韓曉泉;呂大e

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