基于FPGA的智能环境伪装驱动设计
发布时间：2019-05-17 17:15
【摘要】：雷达和卫星是主要的远距离侦查工具。雷达主要是用无线电的方法发现目标并测定它们的空间位置。目前的隐身技术主要是指对雷达波的隐身。另一方面,对卫星可见光监控和红外探测也需要进行伪装。在这种背景下,本文利用电致变色材料采用实时图像处理方法以达到伪装目的。最近几年来,利用可编程逻辑器件,如FPGA,在实现各种基于数字信号处理领域的工程应用中,更能满足系统对速度和稳定性的要求。因此,我们设计了基于FPGA的图像处理和控制输出的系统控制变色材料实现周边环境的模拟,可以应用在需要根据环境伪装的领域。首先,我们对如何完成显示驱动系统功能进行了讨论,包括实现图像获取、图像处理、图像显示以及DAC控制输出。然后应用相关芯片及电路进行软硬件部分的功能模块的设计。基于这种思路,本文主要针对伪装驱动可见光和红外部分的设计展开工作。对于可见光伪装驱动,主要包含以下内容:CCD摄像头采集外界图像,图像采集单元(ADV7180)转换成数字视频,经过一系列算法处理图像转换成RGB数字信号,通过数模转换单元(ADV7123)输出VGA信号驱动VGA显示器上和小型液晶显示屏,FPGA对摄取的RGB信号进行识别和算法处理,形成相应的控制数据系列送到高速D/A转换器(DAC)中,FPGA输出对应的电压信号对变色器件进行自适应控制使之显示和环境相近颜色,以达到伪装目的。伪装驱动红外部分的设计内容如下:用在线式红外热像仪采集外界图像,通过以太网接口输出红外图像至PC,运算得到环境温度信号,再通过USB接口送给图像处理单元(FPGA)。对摄取的温度信号进行识别和算法处理,形成相应的控制数据系列送到高速D/A转换器中,输出对应的电压信号改变材料温度,运用该材料可以实现对红外探测的隐蔽。为了使伪装效果更加精确,我们实时跟踪变色器件根据电压而变色的情况,并调整输出的控制电压。同时还研究外界环境(如光线)改变对变色器件产生的影响,并采用自适应等技术对程序进行优化,实时跟踪环境光对变色器件的影响。
[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.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN791;TP391.41
本文编号：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.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN791;TP391.41
【参考文献】
相关期刊论文 前1条
1 何云斌;张玉芬;;多端口SDRAM控制器的设计与实现[J];微计算机信息;2009年14期
，本文编号：2479278
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