基于Cyclone V的红外热像仪嵌入式系统研究

发布时间：2018-08-27 11:32

【摘要】：红外热像仪利甩红外热辐射原理,以嵌入式软硬件平台为载体,通过模拟、数字信号处理技术,将物体温度分布信息以图像的方式直观清晰的呈现出来,在工业、军事以及日常安全生产中广泛应用。本文以Altera创新的Cyclone V SOC为核心控制器,研发了一种基于ARM+FPGA SOC技术的红外热像仪嵌入式系统。本文主要工作重点在于嵌入式系统软硬件平台的设计。首先,本文针对GWIR0202X1A型非制冷红外焦平面探测器的具体要求,基于Cyclone V SOC特性完成了红外热像仪嵌入式系统硬件平台的设计,主要包括红外热像仪核心处理板、系统电源板、TEC驱动电路板和红外焦平面驱动电路板等4块电路板的设计,其中核心处理板包括SDRAM存储器模块设计,SD卡存储模块设计,UART模块设计,视频DAC模块设计等,完成了高速多层PCB的布局布线设计,并进行了实际PCB制版。其次,以研制的系统硬件电路为平台开展了红外热像仪软件系统的设计,这部分的主要内容包括红外热像仪SOC系统模型设计以及嵌入式Linux操作系统移植两个方面,前者主要包括Altera IP的选择、自定义红外相关IP模块的设计、HPS(硬核处理器系统)配置、SOC系统模型互联等；后者包括Preloader(second program loader)、DTB(设备树)、U-boot、 Linux内核以及根文件系统的制作和移植等。最后,本文在红外热像仪嵌入式软硬件平台的基础上完成了系统各个模块的测试,具体内容包括：电源系统测试、SDRAM存储模块测试、LED及按键测试、AD_RAM模块测试以及视频DAC输出模块测试等,验证了基于Cyclone V SOC嵌入式软硬件平台在红外热像系统应用上的可行性,为新型非制冷热像仪的研制准备了技术基础。
[Abstract]:The infrared thermal imager, based on the embedded software and hardware platform and digital signal processing technology, can display the temperature distribution information of the object in the way of image clearly and intuitively, in industry, by using the infrared thermal imager to dump the infrared heat radiation principle, and take the embedded software and hardware platform as the carrier, through analog and digital signal processing technology. Military and daily safety production is widely used. In this paper, an embedded system of infrared thermal imager based on ARM FPGA SOC technology is developed with Altera innovative Cyclone V SOC as the core controller. The main work of this paper is the design of embedded system hardware and software platform. First of all, according to the specific requirements of GWIR0202X1A uncooled infrared focal plane detector, based on the characteristics of Cyclone V SOC, the hardware platform of the infrared thermal imager embedded system is designed, which mainly includes the core processing board of the infrared thermal imager. The design of four circuit boards, including SDRAM memory module, SD card storage module, video DAC module and so on, is used to design the system power supply board and infrared focal plane drive circuit board, and so on, the core processing board includes the design of SDRAM memory module, the design of memory module of SD card, the design of video DAC module, etc. The layout and wiring design of high-speed multi-layer PCB is completed, and the actual PCB plate making is carried out. Secondly, the software system of infrared thermal imager is designed on the platform of the system hardware circuit. The main contents of this part include the design of SOC system model of infrared thermal imager and the transplant of embedded Linux operating system. The former mainly includes the choice of Altera IP, the design of self-defined infrared related IP module, the configuration of Preloader (second program loader) (hard core processor system), the interconnection of Preloader (second program loader) system model, etc. The latter includes the fabrication and transplantation of Preloader (second program loader) Preloader (second program loader) (device tree) U-boott, Linux kernel and root file system, etc. Finally, on the basis of the embedded software and hardware platform of infrared thermal imager, the test of each module of the system is completed. The specific contents include: power system test, SDRAM memory module test, DAC module test and video DAC output module test, etc. The feasibility of the application of embedded software and hardware platform based on Cyclone V SOC in infrared thermal image system is verified. The technical foundation is prepared for the development of new uncooled thermal imager.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN219

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