基于FPGA的智能環(huán)境偽裝驅(qū)動(dòng)設(shè)計(jì)
發(fā)布時(shí)間：2019-05-17 17:15
【摘要】：雷達(dá)和衛(wèi)星是主要的遠(yuǎn)距離偵查工具。雷達(dá)主要是用無(wú)線電的方法發(fā)現(xiàn)目標(biāo)并測(cè)定它們的空間位置。目前的隱身技術(shù)主要是指對(duì)雷達(dá)波的隱身。另一方面,對(duì)衛(wèi)星可見(jiàn)光監(jiān)控和紅外探測(cè)也需要進(jìn)行偽裝。在這種背景下,本文利用電致變色材料采用實(shí)時(shí)圖像處理方法以達(dá)到偽裝目的。最近幾年來(lái),利用可編程邏輯器件,如FPGA,在實(shí)現(xiàn)各種基于數(shù)字信號(hào)處理領(lǐng)域的工程應(yīng)用中,更能滿足系統(tǒng)對(duì)速度和穩(wěn)定性的要求。因此,我們?cè)O(shè)計(jì)了基于FPGA的圖像處理和控制輸出的系統(tǒng)控制變色材料實(shí)現(xiàn)周邊環(huán)境的模擬,可以應(yīng)用在需要根據(jù)環(huán)境偽裝的領(lǐng)域。首先,我們對(duì)如何完成顯示驅(qū)動(dòng)系統(tǒng)功能進(jìn)行了討論,包括實(shí)現(xiàn)圖像獲取、圖像處理、圖像顯示以及DAC控制輸出。然后應(yīng)用相關(guān)芯片及電路進(jìn)行軟硬件部分的功能模塊的設(shè)計(jì)�；谶@種思路,本文主要針對(duì)偽裝驅(qū)動(dòng)可見(jiàn)光和紅外部分的設(shè)計(jì)展開(kāi)工作。對(duì)于可見(jiàn)光偽裝驅(qū)動(dòng),主要包含以下內(nèi)容:CCD攝像頭采集外界圖像,圖像采集單元(ADV7180)轉(zhuǎn)換成數(shù)字視頻,經(jīng)過(guò)一系列算法處理圖像轉(zhuǎn)換成RGB數(shù)字信號(hào),通過(guò)數(shù)模轉(zhuǎn)換單元(ADV7123)輸出VGA信號(hào)驅(qū)動(dòng)VGA顯示器上和小型液晶顯示屏,FPGA對(duì)攝取的RGB信號(hào)進(jìn)行識(shí)別和算法處理,形成相應(yīng)的控制數(shù)據(jù)系列送到高速D/A轉(zhuǎn)換器(DAC)中,FPGA輸出對(duì)應(yīng)的電壓信號(hào)對(duì)變色器件進(jìn)行自適應(yīng)控制使之顯示和環(huán)境相近顏色,以達(dá)到偽裝目的。偽裝驅(qū)動(dòng)紅外部分的設(shè)計(jì)內(nèi)容如下:用在線式紅外熱像儀采集外界圖像,通過(guò)以太網(wǎng)接口輸出紅外圖像至PC,運(yùn)算得到環(huán)境溫度信號(hào),再通過(guò)USB接口送給圖像處理單元(FPGA)。對(duì)攝取的溫度信號(hào)進(jìn)行識(shí)別和算法處理,形成相應(yīng)的控制數(shù)據(jù)系列送到高速D/A轉(zhuǎn)換器中,輸出對(duì)應(yīng)的電壓信號(hào)改變材料溫度,運(yùn)用該材料可以實(shí)現(xiàn)對(duì)紅外探測(cè)的隱蔽。為了使偽裝效果更加精確,我們實(shí)時(shí)跟蹤變色器件根據(jù)電壓而變色的情況,并調(diào)整輸出的控制電壓。同時(shí)還研究外界環(huán)境(如光線)改變對(duì)變色器件產(chǎn)生的影響,并采用自適應(yīng)等技術(shù)對(duì)程序進(jìn)行優(yōu)化,實(shí)時(shí)跟蹤環(huán)境光對(duì)變色器件的影響。
[Abstract]:Radar and satellite are the main long-range detection tools. Radar mainly uses radio method to detect targets and determine their spatial position. The current stealth technology mainly refers to the stealth of radar waves. On the other hand, satellite visible light monitoring and infrared detection also need to be camouflaged. In this context, electrochromic materials are used for real-time image processing to achieve the purpose of camouflage. In recent years, programmable logic devices, such as FPGA, have been used to realize various engineering applications based on digital signal processing, which can better meet the requirements of speed and stability of the system. Therefore, we design a system based on FPGA image processing and control output to control the discoloration material to realize the simulation of the surrounding environment, which can be used in the field of camouflage according to the environment. Firstly, we discuss how to complete the function of display driver system, including image acquisition, image processing, image display and DAC control output. Then the related chips and circuits are used to design the functional modules of the software and hardware part. Based on this idea, this paper mainly focuses on the design of visible and infrared parts driven by camouflage. For the visible light camouflage drive, it mainly includes the following contents: the CCD camera collects the external image, the image acquisition unit (ADV7180) is converted into digital video, and the image is converted into RGB digital signal through a series of algorithms. The VGA display and the small liquid crystal display are driven by the output VGA signal of the digital analog conversion unit (ADV7123). The RGB signal is identified and processed by FPGA, and the corresponding control data series is formed and sent to the high speed D / A converter (DAC). The corresponding voltage signal of FPGA outputs adaptively controls the discoloration device to display the color similar to the environment in order to achieve the purpose of camouflage. The design contents of the infrared part driven by camouflage are as follows: using the on-line infrared thermal imager to collect the external image, outputting the infrared image to the PC, operation through the Ethernet interface to get the ambient temperature signal, and then sending it to the image processing unit (FPGA). Through the USB interface. The temperature signal is identified and processed by algorithm, and the corresponding control data series is sent to the high speed D / A converter to output the corresponding voltage signal to change the temperature of the material, which can be used to realize the concealment of infrared detection. In order to make the camouflage effect more accurate, we track the discoloration of the discoloration device according to the voltage in real time, and adjust the control voltage of the output. At the same time, the influence of the change of external environment (such as light) on the discoloration device is also studied, and the adaptive technology is used to optimize the program to track the influence of ambient light on the discoloration device in real time.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN791;TP391.41
本文編號(hào)：2479278
[Abstract]:Radar and satellite are the main long-range detection tools. Radar mainly uses radio method to detect targets and determine their spatial position. The current stealth technology mainly refers to the stealth of radar waves. On the other hand, satellite visible light monitoring and infrared detection also need to be camouflaged. In this context, electrochromic materials are used for real-time image processing to achieve the purpose of camouflage. In recent years, programmable logic devices, such as FPGA, have been used to realize various engineering applications based on digital signal processing, which can better meet the requirements of speed and stability of the system. Therefore, we design a system based on FPGA image processing and control output to control the discoloration material to realize the simulation of the surrounding environment, which can be used in the field of camouflage according to the environment. Firstly, we discuss how to complete the function of display driver system, including image acquisition, image processing, image display and DAC control output. Then the related chips and circuits are used to design the functional modules of the software and hardware part. Based on this idea, this paper mainly focuses on the design of visible and infrared parts driven by camouflage. For the visible light camouflage drive, it mainly includes the following contents: the CCD camera collects the external image, the image acquisition unit (ADV7180) is converted into digital video, and the image is converted into RGB digital signal through a series of algorithms. The VGA display and the small liquid crystal display are driven by the output VGA signal of the digital analog conversion unit (ADV7123). The RGB signal is identified and processed by FPGA, and the corresponding control data series is formed and sent to the high speed D / A converter (DAC). The corresponding voltage signal of FPGA outputs adaptively controls the discoloration device to display the color similar to the environment in order to achieve the purpose of camouflage. The design contents of the infrared part driven by camouflage are as follows: using the on-line infrared thermal imager to collect the external image, outputting the infrared image to the PC, operation through the Ethernet interface to get the ambient temperature signal, and then sending it to the image processing unit (FPGA). Through the USB interface. The temperature signal is identified and processed by algorithm, and the corresponding control data series is sent to the high speed D / A converter to output the corresponding voltage signal to change the temperature of the material, which can be used to realize the concealment of infrared detection. In order to make the camouflage effect more accurate, we track the discoloration of the discoloration device according to the voltage in real time, and adjust the control voltage of the output. At the same time, the influence of the change of external environment (such as light) on the discoloration device is also studied, and the adaptive technology is used to optimize the program to track the influence of ambient light on the discoloration device in real time.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN791;TP391.41
【參考文獻(xiàn)】
相關(guān)期刊論文 前1條
1 何云斌;張玉芬;;多端口SDRAM控制器的設(shè)計(jì)與實(shí)現(xiàn)[J];微計(jì)算機(jī)信息;2009年14期
，本文編號(hào)：2479278
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