基于FPGA的高速数据采集系统的设计

本设计采用了以FPGA作为主控逻辑模块,从而实现了数据的硬件采集。设计中采用了自顶向下的方法,并将FPGA依据功能划分为几个模块,详细介绍了各个模块的设计方法和功能。FPGA模块设计采用VHDL语言,在QuartusⅡ中实现了软件的设计和仿真。整个系统可以实现6路最大工作频率是40kHz的模拟信号的采集和6路内部通信信号以实现自检的功能。     

FPGA平台上的远程静态应变测量系统设计

设计了一种基于FPGA和ARM架构的多通道远程静态应变测量系统.采用FPGA控制多通道模数转换模块实现多路应变信号的采集和数据处理,利用ARM和网络模块实现FPGA的控制及其与远程终端之间的以太网通信.系统可通过远程终端控制现场测量节点的参数设置和32路应变信号的采集、处理和存储.该系统采用模块化和通用化设计方法,可实现数据采集通道的减少与扩展,同时也可应用于其他数据采集场合.     

基于FPGA的VGA数据通信设计

介绍了利用现场可编程门阵列(FPGA)实现控制VGA数据通信的方法,着重于VGA信号特点的分析和FPGA中重要模块的研究与设计.分析了设计中所用的FIFO模块、VGA控制模块,给出了其顶层模块设计及其时序功能仿真.本设计采用硬件描述语言Verilog编程,利用FPGA产生高精度时序逻辑保证了实时采集及高速传递的正确性,同时能够正确地在显示设备上稳定显示.     

基才FPGA的多路数字量采集模块设计

针对测控系统中监测信号较多的情况,提出了一种基于FPGA的多路数字信号采集模块设计.采集数字信号的高低状态和测量其中一路信号的频率,并采集脉冲信号的脉宽和时延,通过FPGA将数据编帧上传给上位机.结合FPGA、大容量FIFO的特点,设计了光电隔离电路、FIFO电路、FPGA配置电路等.实现了USB2.0与上位机通信,通过上位机应用软件和驱动程序实现模块与PC机实时通信和控制.该设计方案结构灵活、控制简单、可靠性较高.     

基于FPGA的多路光电信号采集存储系统设计

针对激光光幕法测试弹丸坐标时需要采集多路光电信号的问题,提出了以FPGA为采集及控制芯片,以FLASH为存储芯片的多路光电信号采集与存储系统的设计。通过将采集到的光电信号缓存在FPGA内建FIFO中,然后对该信号进行处理并存储在FLASH中,使用USB接口与上位机进行通信传输。仿真结果表明,该系统可成功将64路光电信号采集并存储,结构灵活、操作简单,数据准确且存储量大。     

基于FPGA的多通道图像采集存储系统设计

针对图像信号的基本特征设计了对于四路间歇性数据并行存储方案,整个图像采集存储系统分为控制模块和存储模块两个部分：控制模块主要是采用FPGA对图像数据进行并行接收、数据编码、控制存储、全程工作控制;存储模块采用FLASH芯片实现数据的存储。分析完成了该系统的硬件电路设计和FPGA程序设计,为多路图像信号的实时存储以事后分析提供了一种解决方案。     

基于FPGA的2M误码测试仪设计

根据2M误码测试仪的系统整体功能要求．给出了基于FPGA的2M误码测试仪的系统硬件架构和核心控制器FPGA内核的设计框架。重点介绍了系统硬件结构中E1接口的设计方法和软件中的系统时钟模块、测试序列发生模块、位同步信号提取模块和帧同步信号检测模块的FPGA设计方法。同时以Ahera的QuartusⅡ软件为开发平台,给出了部分模块的仿真波形图。     

基于FPGA的多路数字量采集模块设计

针对测控系统中监测信号较多的情况,提出了一种基于FPGA的多路数字信号采集模块设计。采集数字信号的高低状态和测量其中一路信号的频率,并采集脉冲信号的脉宽和时延,通过FPGA将数据编帧上传给上位机。结合FPGA、大容量FIFO的特点,设计了光电隔离电路、FIFO电路、FPGA配置电路等。实现了USB2．0与上位机通信,通过上位机应用软件和驱动程序实现模块与PC机实时通信和控制。该设计方案结构灵活、控制简单、可靠性较高。     

一种基于FPGA的计算机层析重建的方法

提出一种基于FPGA的计算机层析重建的方法,即借助FPGA的高速数据处理能力来提高计算机层析重建的速度.采用自顶向下的方法,将FPGA依据功能划分为几个模块,并详细论述了各个模块的设计方法和控制流程.FPGA模块的设计采用VHDL语言编程和内部已有的小模块相结合的方法来实现,并利用时钟信号对模块内部以及模块之间运算和数据流程进行控制.整个软件设计和综合模拟仿真在Quartus ||开发平台中完成,同时也给出了一些模块仿真的波形.     

基于FPGA的多路并行混合数据存储系统

为了解决多路信号并行混合采集存储的问题,文中设计了一种以FPGA为控制芯片的多路并行采集存储系统。该系统选用XC6SLX163CSG324I为主控芯片,设计包括数据采集接收模块、数据存储模块、数据回读模块。数据接收模块包括16路模拟量数据、导引头(DYT)数据、脉冲编码调制(PCM)数据和控制命令数据。该系统充分利用FPGA可重构的优势,对内部资源合理利用,降低了硬件资源开销,对所接收数据进行多路并行采集存储;利用握手原则,减少了数据的丢失。实验结果表明,该系统存储速率最高可达25 Mbyte/s,且备用口回读数据时,帧计数连续,该系统准确性较高。     

Technology innovation and process integrations for sub-100nm gate patterning

This paper presents a brief overview of the Applied Centura(R)DPS(R)system,configured with silicon etch DPS Ⅱ chamber, with emphasis on discussing tuning capability for CD uniformity control. It also presents the studies of etch process chemistry and film integration impact for an overall successful gate patterning development. Discussions will focus on resolutions to key issues, such as CD uniformity, line-edge roughness, and multilayer film etching integration.     

White organic light-emitting devices based on fac tris（2- phenylpyridine） iridium sensitized 5,6,11,12-tetraphenylnap -hthacene

We have fabricated the white organic light-emitting devices （WOLEDs） based on 4,4＇ -bis（2,2 -diphenyl vinyl）-1,1＇ - biphenyl （DPVBi） and phosphorescence sensitized 5,6,11,12,-tetraphenylnaphthacene （rubrene）. The device structure is ITO/2T-NATA （20 nm）/NPBX （20 nm）/CBP： x%Ir（ppy）3：0.5% rubrene （8 nm）/NPBX （5 nm）/DPVBi （30 nm）/Alq（30 nm）/LiF（0.5 nm）/A1. In the devices, DPVBi acts as a blue light-emitting layer, the rubrene is sensitized by a phosphorescent material, fac tris （2-phenylpyridine） iridium [Ir（ppy）3], acts as a yellow light-emitting layer, and N,N＇ -bis- （1-naphthyl）- N,N＇ -diphenyl -1, 1＇ -biphenyl-4,4＇ -diamine （NPBX） acts as a hole transporting and exciton blocker layer, respectively. When the concentration of Ir （PPY）3 is 6wt%, the maximum luminance is 24960 cd/m^2 at an applied voltage of 15 V, and the maximum luminous efficiency is 5.17 cd/A at an applied voltage of 8 V.     

Complete approach to automatic identification and subpixel center location for ellipse feature

To meet the need of automatic image features extraction with high precision in visual inspection, a complete approach to automatic identification and sub-pixel center location for similar-ellipse feature is proposed. In the method, the feature area is identified automatically based on the edge attribute, and the sub-pixel center location is accomplished with the leastsquare algorithm. It shows that the method is valid, practical, and has high precision by experiment. Meanwhile this method can meet the need of instrumentation of visual inspection because of easy realization and without man-machine interaction.     

小角度扩展相关性近似算法分析

本论文提出一种在多天线MIMO信道相关性建模中小角度扩展近似理论算法,并应用于分析MIMO系统性能。分析中分别对三种不同角能量分布情况下的空间相关性研发快速近似计算法,并同时提出双模(Bi-Modal)角能量分布情况下的近似运算。通过分析这些新方法的近似效率,可以得到计算简单、复杂度低、而且符合实际的MIMO相关信道矩阵,对系统级的快速高效计算法的研究和系统级的评估以及误差分析具有重要的意义。     

A Versatile Mixed-Signal Pin Approach for Cost-Effective Test of Automotive ICs

Integrated circuits (ICs) intended for increasingly sophisticated automotive applications bring unique test demands. Advanced ICs for applications such as highly integrated automatic braking system (ABS) and airbag controllers combine high voltage digital channels, significant VI demands and precise timing capability. Along with continued missioncritical reliability concerns, the trend toward higher voltage operation and increased device integration requires specialized test capabilities able to extend across the wide operating ranges found in automotive applications. Among these capabilities, automotive test requirements increasingly dictate a need for a cost-effective versatile mixed-signal pin electronics with very high data rates reaching up to 50MHz with a voltage swing of-2 V to +28 V.     

Optical vibration and deviation measurement of rotating machine parts

It is of interest to get appropriate information about the dynamic behaviour of rotating machinery parts in service. This paper presents an approach of optical vibration and deviation measurement of such parts. Essential of this method is an image derotator combined with a high speed camera or a laser doppler vibrometer （LDV）.     

INTEGRATION OF OPTICAL AND WIRELESS NETWORKS

正For a long time,optical and wireless systems/net-works are developed in separate communities witha few attempts for in-depth convergence.In fact,it prom-ises many advantages to combine the optical and wire-less technologies in the levels of systems and networks.Recently,both academia and industry have made manyefforts to enter a new phase of development to take op-tical and wireless systems as fully integrated networks.To provide high bandwidth and reliable service for bothfixed and mobile users,a well-designed network must     

社长序言（英文）

正Happy New Year!As we step into a new year,we take a look back at the key feature topics covered in China Communications over the past 12 months and set out our expecta-     

云计算专题（英文）

正Cloud computing is a novel computing paradigm that utilizes remote cloud resources to achieve a high-performance computation.Cloud provides infrastructure,platform and software as different on-demand services.China has made remarkable progress in cloudbased products and operating system technology.The government,enterprises and research institutions are all active in the development of cloud computing-related projects.Despite the progress,many important problems     

Call for Papers—Feature Topic,Vol.12,No.3,2015

正Smart Grid Communications The electric power industry is undergoing profound changes as the industry aims to capture the promise of a smart grid for a sustainable energy future.Enabled by the advanced sensing devices such as Phasor Measurement Units(PMUs),increasingly powerful