一种基于CPCI总线的红外图像采集卡

红外目标识别系统中，需要实时采集红外传感器的图像数据。本文描述了一种基于CPCI总线的红外图像数据采集卡。此卡采用CPCI总线控制器中FIFO通道的DMA方式进行高速图像数据传输，保证了数据传输的实时性和准确性，满足了系统对大数据量的存储要求。此采集电路对于多种红外传感器具有良好的兼容性，在实地采集数据中得到了良好的原始红外图像数据。     

高分辨率多传感器融合图像跟踪系统的设计与实现

为了提高图像处理器目标跟踪的准确度和对复杂环境的适应能力,设计了一种CPCI架构的多传感器融合图像跟踪系统。针对高分辨率高帧频图像的采集、目标搜索与跟踪,设计并实现了以FPGA+DSP为核心的嵌入式图像处理平台,采用CPCI标准总线作为数据共享通道,由嵌入式图像处理平台完成实时计算,数据中心完成跟踪结果的数据融合和系统综合控制。实验结果表明：系统可以实现多路不同分辨率CameraLink图像或HD-SDI图像的采集和融合跟踪处理,该架构处理能力强,可扩展性高,结构紧凑,为图像融合跟踪系统提供了一种可靠的解决方案。     

基于CPCI总线通用数字信号处理板的设计

本文设计了一种基于 CPCI 总线的通用数字信号处理板,采用 ADI 公司的 ADSP-TS201 和 Xilinx 公司的系列 FPGA 实现高速信号处理,具有较强的通用性和可扩展性,主要针对雷达、声纳、通信、图像处理等高速信号处理领域。     

基于TS101S和CPCI的红外图像采集处理系统的设计

本文紧密结合红外探测器特点,介绍了一种基于ADSP-TS101S的红外图像数据采集处理系统,主要对图像采集、图像处理中几个关键技术进行了描述。系统用ADSP-TS101S完成图像预处理,用CPLD进行时序逻辑设计,并采用CPCI总线技术以保证图像数据的高速传输。通过测试,该系统实时性好,计算效率高,工作稳定性好。     

CPCI数据总线接口的设计与实现

通过在FPGA中编写Verilog HDL语言控制CPCI协议转换芯片,从而实现与CPCI总线之间的高速通信.实验结果证明,该设计方案工作稳定、传输速度快、数据准确,并可扩展到其他需要通过CPCI总线的嵌入式系统中.     

基于CPCI的多路E1传输以太网研究

目前大部分IP转E1设备还没有紧致型外围器件互联接口（CPCI）,这里采用RC6105作为多路E1传输以太网的转换芯片,提出了一个带CPCI接口的四路E1传输一路以太网数据的设计方案,使设备通过CPCI总线与工控机无缝连接。介绍了基于CPCI的多路E1传输以太网的整体解决方案,涉及到网络物理接口器件（PHY）和介质访问控制器（MAC）的标准媒体独立接口（MII）连接,帧映射通用成帧规程、以太网帧封装映射及重组还原问题。     

基于CPCI总线的雷达信号源板及其驱动的开发

根据CPCI总线的结构及特点,结合其桥接芯片PCI9054局部接口设计特性,开发了基于CPCI总线的雷达信号源板。在内核态讨论了基于CPCI总线设备驱动程序的开发,利用Driverstudio,VC＋＋设计了CPCI总线设备驱动程序和调试驱动程序,实现对CPCI总线控制器PCI9054的访问与控制,提高数据读写的速率,为雷达信号处理机系统的调试工作提供了便利。     

基于CPCI总线CPU主控模块的设计与实现

在一些恶劣环境和军事应用环境条件下,所应用的计算机比普通商用计算机具有更高、更严的要求,提出基于CPCI总线的CPU主控模块设计方案。该方案严格遵守CPCI规范,利用高性能、低功耗、集成度高的ETXPM模块实现通用计算机的主板功能,采用TI公司的PCI2050B桥电路作为CPCI的接口模块,实现了多级总线扩展结构。该设计方案简化了设计,节省了30％的研制费用,缩短了1／2的研制周期。该模块已经通过舰载的应用测试,在-40．85℃的环境下,系统工作稳定,各接口应用正常,达到了该项目的技术指标要求。     

基于CMOS图像传感器的视频采集系统设计

提出了一种采用Altera公司CycloneⅡ系列的FPGA作为主控芯片,采用OV7670这款CMOS图像传感器作为视频信号源并采用sRAM（静态随机存储器）作为数据缓存的实用方案,实现了对图像传感器寄存器配置、图像传感器输出信号采集、图像数据格式转换、图像数据缓存及最终在VGA显示器上进行图像显示的一系列过程。该视频采集系统设计能够很好地满足实时图像的输出需求。     

突破CPCI成本瓶颈研华欲打造全球工控第一品牌

由于国内众多厂商和中国计算机行业协会的积极推广,以及CompactPCI(简称CPCI)技术固有的众多优点,CPCI技术目前在国内电信、工控、测试等领域应用日趋广泛.2004年7月,由中国计算机行业协会主办、研华(中国)公司承办的PICMG/P.R.C年会暨CPCI技术应用峰会再次召开,吸引了众多厂商和广大用户的积极参与.此次峰会设有两大主题:CPCI技术在自动化与测量领域的应用,及CPCI技术在通讯领域的应用.业内众多知名厂商如Intel、Stargen、Performance Technologies等做了主题发言并展示了CPCI创新技术及其在电信、电力、网络系统、工业自动化、数据采集、军工系统等行业的解决方案.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

Electronic Structure of Semiconductor Nanocrystals

This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Critical Stage Rule-Based Real Time Dispatch（RTD）System in Highly-Mixed-Products （HMP） FAB

An improving utilization and efficiency of critical equipments in semiconductor wafer fabrication facilities are concerned. Semiconductor manufacturing FAB is one of the most complicated and cost sensitive environments. A good dispatching tool will make big difference in equipment utilization and FAB output as a whole. The equipment in this paper is In-Line DUV Scanner. There are many factors impacting utilization and output on this equipment group. In HMP environment one of the issues is changing of reticule in this area and idle counts due to load unbalance between equipments. Here we'll introduce a rule-based RTD system which aiming at decreasing the number of recipe change and idle counts among a group of scanner equipment in a high-mixed-products FAB.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.