核电站DCS首出功能的实现

由于核电站对安全的敏感性,当核电站发生各种假设始发事件、继发事件后,需要快速准确地识别出引发事件的第一个故障原因,也就是所谓的首出功能。但是,大型商用核电站由于设备繁多、系统异常复杂,开发一个在功能和性能上都理想的首出系统并不容易,需要从整个DCS进行系统考虑,巧妙设计。本文研究了两种国内主流DCS技术方案对核岛首出功能的实现,并给出了ACPR1000+项目DCS对核岛首出方案的技术改进。     

电视播控系统的硬盘化改造

提出电视播控系统的硬盘化改造方案，该方案应急方便、处理灵活，采用两台TEK公司的PVS-1000视频服务器，完成两套节目的硬盘化播出；视频服务器间通过FC网实现MPEG-2素材镜像备份；各工作站之间组成以太网，实现文件与公共数据的互传。     

微机控制工业窑炉的SPC方案

烧结炉微机群控系统是我所研制的一种工业窑炉控制系统,该系统采用SPC方式对8台使用DWK—702精密温度控制仪的烧结炉进行升温自动控制。实现烧结工艺自动化。完全满足了生产要求。该系统是应用微机改造设备的一个典型实例,八六年被电子部优选为推广项目之一。现已用于电子部八九八厂。一、控制方案微机用于炉温控制,国内已有不少先例,多数是以DDC(Direct Digital Contral)方     

基于ModBus协议的核电厂KRT与DCS通信改进研究及应用

介绍了CPR1000项目核电站KRT与DCS系统的网络通信方案以及在系统运行过程中遇到的问题。通过对KRT与DCS系统通信结构的分析,提出了增加生命信号与Mod Bus协议异常响应报文机制相结合的改进处理方案,实现了KRT与DCS系统数据通信异常时的自动检测与冗余切换功能。该改进处理方案通过在CPR1000项目上的实施与应用,成功解决了KRT与DCS系统的数据通信问题。     

广播电视台4K超高清播出系统设计与实现

本文结合北京市广播电视台4K超高清频道项目建设，详细介绍该项目中视音频通道同播系统、播出文件化备播系统、播控系统及监控比对系统，并阐述4K系统实现的功能及技术的革新。     

基于ARM的线阵CCD测径系统设计

文章研制了一种基于ARM微控制器LPC2210与线阵CCD的在线动态测径仪,该测径仪采用CPLD(复杂可编程逻辑器件)控制器实现对线阵CCD时序脉冲的驱动;以ARM微控制器为测径仪的核心,实现图像信息的处理和对整个系统的控制,保证动态、实时、准确的测量线缆直径。文中介绍了该仪器的基本原理,详细给出了系统硬件方案和软件流程。     

有线电视台自动播控系统的设计

结合六安有线电视台的实际情况，提出了适合县市级中小型电视台的自动播控系统设计方案，介绍了系统功能特点与方案实施情况，提出了对模拟播控系统进行数字化升级改造的具体方案。     

互联互通，走出播出孤岛——论全台网环境下播控系统设计的若干问题

本文结合中央电视台新台址播控系统项目和上海SMG播控系统项目的实际情况，就全台网环境下播控系统在高标清处理，节目文件备播与调度、系统流程监控以及节目质量保证等方面的重点问题进行阐述。     

核电站仪控系统的测试系统

核电站仪表控制系统是核电站的神经系统,它直接关系到核电站安全、可靠和稳定的运行,需对核电仪控系统进行测试.在开发核电站仪控系统的时候,需要设计相应的测试系统来验证和确认仪控系统.     

电视台播控系统的硬盘化改造

从技术维护和管理人员的角度出发，论述电视台在制定播控系统的硬盘化改造中的安全性和系统指标的考虑，软件设计的要求等注意事项。以漳州电视台播控系统的硬盘化改造方案为例，详细介绍系统的信号通道设计、控制系统方案及视频服务器的选择依据等。从发展的角度出发，提出播控系统的改造没有最终方案，也不可能一步到位。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

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.     

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.     

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.     

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.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.