实时计算平台设计方案:911-基于6U VPX的光纤图像DSP实时计算平台

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| | | ### 基于6U VPX的光纤图像DSP实时计算平台 | | 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| 一、系统组成 该平台基于风冷式的 6U 6槽VPX图像处理平台,包括:计算机主板、计算机主板后板、存储板、图像信号处理板、图像信号处理板后板、图像光纤转接板、机箱背板及机箱组成。图1为系统背板结构示意图: 图 1:系统背板互联示意图 备注:上图槽5板卡为太速自研的图像接口板,作为预留板卡,并不包含在系统组成中。 二、计算机主板 2.1.概述: 计算机主板选用6U VPX i7 刀片计算机,该产品是一款基于第三代Intel i7双核四线程(或四核八线程)的高性能6U VPX刀片式计算机。产品提供了可支持全网状交换的高速数据通道,其中P1,P2各支持4个PCIe x4 Gen3总线接口。该产品具有很强的扩展性,可以很好满足多负载多节点的应用需求。 产品结构完全满足VITA 46.0规范,兼容OpenVPX (VITA 65)标准,具有很强的可靠性、可维护性、可管理性,并与军用计算机的抗振动、抗冲击、抗宽温环境急剧变化等恶劣环境特性进行完美融合。产品集成Intel HD Graphics 4000显卡,支持VGA显示。同时,产品特别注重DDR3双通道内存、PCIe、USB3.0、GbE和SATA3.0等高速串行总线的信号完整性设计,以及高性能和宽温环境下的电源可靠性设计,以确保该VPX计算机在车载、舰载、机载等多种恶劣环境下的可靠性运行。 图 2:6U VPX i7 刀片计算机 三、6U VPX存储板 存储板选用6U VPX 的mSATA高性能数据存储板。 3.1.产品特性: ● 存储容量4TB ● 读写方式RAID0 ,读写速率2GB/s ● 四路x4 SRIO@5Gbps/Lane ● 两路 x4 PCIe@5Gbps/Lane ● 板载4GB DDR3 SDRAM ● 板载 2颗 128MB NorFlash ● 两路1000Base-T接口 ● 符合VITA46.0 VPX Base Standard 图 3:存储板原理框图 3.2.产品规格: |-------|------------------------------------------------------| | 处理能力 | 两片 Xilinx FPGA XC7K325T-2FFG900I | | 存储能力 | 每片FPGA外挂DDR3 SDRAM 256M x 64bit | | 存储能力 | 每片FPGA 外挂BPI Flash 128MB,用于程序加载 | | 存储能力 | 外挂8个mSATA盘 @ 6Gbps/lane,总容量 可达4TB | | VPX接口 | P0:单电源供电,系统复位(低电平有效),SM总线(IIC) | | VPX接口 | P1:四组x4 SRIO @ 5Gbps/Lane | | VPX接口 | P2:两组x4 PCIe @ 5Gbps/Lane,一个千兆以太网 10/100/1000 Base-T | | VPX接口 | P3:32对LVDS | | VPX接口 | P4:32对LVDS | | 前面板 | 一个千兆以太网 | | 前面板 | 两个电源指示灯 | | 前面板 | 一个系统复位按键 | | 前面板 | 两个FPGA分别引出4个LEDs至前面板,用于状态指示及调试 | | 片间互联 | 两个FPGA 实现72对LVDS互联 | | 工作温度 | -40℃~70°C | | 供电要求 | 单电源DC12V 5A | | 散热方式 | 风冷散热 | 四、图像信号处理板 4.1.概述: 图像信号处理板选用6U VPX的双TMS320C6678+Xilinx FPGA K7 XC7K420T的图像信号处理板。 图像信号处理板包括2片TI 多核DSP处理器-TMS320C6678,1片Xilinx FPGA XC7K420T-1FFG1156,1片Xilinx FPGA XC3S200AN。实现四路千兆以太网输出,两路422输出。通过FPGA的GTX ,LVDS实现高速背板互联。采用6U VPX架构。芯片满足工业级要求,板卡满足抗震要求。 图像信号处理板卡负责对视频信号进行处理,返回或输出。板卡采用双 TI 8核DSP处理器 TMSC6678,Xilinx的 K7-XC7K420T处理器 ,Xilinx 的Spartans XC3S200AN处理器,TI的MSP430处理器。其中CFPGA负责管理板卡的上电时序,时钟配置,系统及模块复位等,MCU负责检测板卡的温度、电源。 图 4:图像信号处理板实物图 图 5:图像信号处理板原理框图 4.2.技术指标: ● 支持2个TMS320C6678芯片,每片DSP外挂DDR3,256M x 64bit容量; Nor Flash 16M x16bit容量;4路以太网接口,DSP之间通过HyperLink x4 互联,支持4 x 3.125Gbps带宽。 ● DSP与K7直接通过RapidIO x4模式互联,支持4 x 3.125 Gbp速度。 ● DSP 与K7 通过I2C,SPI,Uart,GPIO接口互联。 ● DSP调试为普通JTAG口,FPGA-K7为BPI模式。 ● 板卡要求工业级芯片。结构满足抗震要求。 ● 板卡采用双电源供电,12V 6A,5V 1A。 4.3.接口互联设计: ● 两片6678通过 Hyperlink x4 @3.125Gbps /per Lane 互联。 ● 每片6678的SGMII-0通过PHY芯片,连接至排针。 ● 每片6678的SGMII-1通过PHY芯片,连接到VPX-P4。 ● 每片6678的PCIe x2 连接至VPX-P3。 ● 每片6678和K7通过 SRIO x4 @ 3.125G bps /per Lnae互联。 ● 每片6678和K7实现GPIO,SPI,I2C,UART互联。 ● 每片6678 和CFPGA 实现GPIO,SPI互联。 ● K7和CFPGA实现GPIO互联。 ● K7的 GTX x20 分别连接至 VPX的P1,P2,P3接口。 ● K7的LVDS x10 连接至VPX-P5。 ● K7 输出两组422信号连接至VPX-P4。 4.4.物理特性: ● 尺寸:6U VPX板卡,大小为160X233.35mm ● 工作温度:-40℃~ +85℃ ● 工作湿度:10%~80% 五、图像信号处理板后板: 图像信号处理板后板设计包含8个光模块,连于前板Kintex7 的GTX,光纤速率6.25Gbps,用2个光模块接2路光纤图像输入板卡;以及引出两路DSP的以太网口,方便视频压缩数据输出。 图 6:图像信号处理板后板布局图 六、软件设计内容 6.1软件流程说明 图1-3 图像处理平台原理框图 CameraLink相机转光纤传输(A点): ● 传输图像格式为2种,5120X384X200fsX8bit黑白(3.15Gbps),5120X3840X25fsX8bit(3.94Gbps)黑白,单路图像最大带宽约为4Gbps,所需高速接口有效带宽至少5Gbps; ● 单路光纤Aurora64B66B x1最大速率6.25Gbps,有效带宽为6.06Gbps。 ● 信号处理板卡板带宽(B、C、E点): ● 信号处理板卡FPGA到DSP RapidIO带宽(B点),Kintex7 FPGA RapidIO 到DSP的传输带宽4 x 3.125Gbps x 50% = 6.25Gbps; 信号处理板卡到存储磁盘阵列的带宽(C点),信号处理板卡和存储磁盘阵列通过SIRO 实现数据传输;每个板卡2组RapidIO,每组传输带宽4 x 3.125Gbps x 50% = 6.25Gbps/s; ● FPGA到计算机板PCIe传输带宽(E点),Kintex7 FPGA需要把2路视频抽取传输给计算机板显示,通过PCIe 2.0X4,理论带宽5GbpsX4=20G,有效带宽不低1250MB/s。 ● FPGA到内存的带宽,FPGA外挂两组DDR3,每组容量512MB;每组DDR3读写带宽800M x 32 /8 x 80%(读写效率)= 1600MB/s; ● DSP到内存的带宽,每片DSP外挂1GB的DDR3;每片DDR3读写带宽1333M x 64 /8 x 50%(读写效率)= 5332MB/s。 存储板存储带宽(D点): ● 存储板包含8片mSATA(4TB),构成一个Radi0模式,最大存储速度是2.4GB/s。 计算机板和存储磁盘阵列传输带宽(F点): ● 计算机板和存储磁盘阵列实现PCIe x4 互联,进行图像数据导出;计算机板和存储磁盘阵列传输带宽通过PCIe接口 2.0X4,理论带宽5GbpsX4,有效带宽不低1250MB/s。 6.2存储卡mSATA数据的采集回放 6.3PCIe影像显示软件 程序版本:pcie_pic_show_win7_x64 开发环境:VS2010 操作系统:Windows 7-64bit 图像处理库:OpenCV-2.3.1 驱动软件:WinDriver (win7-64bit版本) 软件路径:...\pcie_pic_show_win7_x64\x64\Debug\ test_pci.exe 影像采集显示软件,通过PCIe接口控制存储卡发起或者结束DMA操作,计算对应影像帧频,显示传输状态,提供上位机软件函数,将图像显示到指定区域。 此处影像采集数据为连续8bit灰度图像数据,上位机软件可启动、停止或者将数据存文件于磁盘E(路径可在程序更改)。 点击 开始采集并显示图像,点击 停止采集及显示。点击 可将当前一幅图像的数据保存于指定盘内。此处显示 绿色为正在采集显示,显示 红色为停止采集显示。这是1S的图像帧频统计 ,于真实图像帧率可能稍有误差。 | | |

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