有线数字网络光缆智能监测系统的建设与应用

针对现阶段有线数字网络光缆状态监测的现实问题,通过对系统架构、工作原理等分析,利用核心算法应用、硬件组成设计等手段论述光缆智能监测系统建设的方法和手段,实现远程智能监控光缆运行状态、无人巡检故障区域,极大提升了有线数字网络光缆技术运维的自动化、智能化能力,具有一定的借鉴意义。     

基于Zigbee技术的监管平台的系统设计与实现

基于无线传感器网络设计一套战地装备智能监控系统,该系统由集成特定传感器的多个监控节点和配套通信及数据处理软件构成。系统结合智能传感器网络技术、无线射频（RFID）技术和有线通信网络技术,可在战地恶劣条件下快速构建一个以无线自组网为终端、以内网为骨干的混合网络。系统通过监控节点协作地感知、采集和处理网络覆盖区域内特定对象的信息,实现重要装备自动注册、关键设备运行状态自动监测、前指驻地周边环境定位、监控和报警等多种功能。     

智能配电房的关键技术研究

在配电房加装综合检测系统,实现配电房环境和供电设备各种状态量在线监测,通过后台系统集成开发,实现各种监测数据的查询、分析、预警及综合展示,以提高配电房的运行能力,保障配电房设备的安全运行。本文通过分析智能配电房的配网自动化、视频及环境监控、状态监测、防误操作、电能质量、电缆沟监控6个系统的关键技术的研究,提出了未来智能配电房的总体框架及总体技术方案,并展望了智能配电房的应用前景。     

基于ARM和3G技术的通信基站监控系统设计

结合嵌入式设计技术和移动通信技术,文章重点研究了基站监控系统终端硬件、软件设计以及监控中心软件设计。监控终端硬件设计采用ARM11核心处理器,远程传输采用3G技术,文中详细讲述了监控终端的硬件设计和软件设计方法和工作流程。本系统可以实现基站机房环境维护、设备的远程监控,电源自动切换,基站安全报警,基站维修人员管理等功能。     

一种智能高压输电铁塔远程监控系统的设计

针对传统的人工巡检和传感器监测方式存在的弊端,设计了一种基于嵌入式技术与传感器技术相结合的高压输电铁塔智能防盗报警远程监控系统,监测终端将摄像头采集的视频图像信息和各传感器工作状态通过4G网络传输至监控中心进行分析处理。文中介绍了监测终端硬件和软件以及监控中心基于Qt Creator的视频集中管理软件的设计流程。系统在线测试结果表明,系统运行稳定可靠,智能监控效果良好,可切实提升电网安全保障能力。     

基于NB-IoT和物联网技术的地下停车库节能照明系统

地下停车场节能照明系统从实际需求出发,采用基于蜂窝的窄带物联网NB-IoT技术和ZigBee无线网络技术,将微波感应器的物联网技术和智能节能灯具结合,实现了智能绿色照明.采用该系统后,可使照明系统工作在全自动状态,系统将按预先设置切换若干工作状态,根据预先设定的时间自动地在各种工作状态之间转换.通过NB-IoT与云平台数据交互,实现云平台集中管理控制微波感应器和智能节能灯具,同时云平台实现设备故障监控和节能数据分析.     

总控监控系统客户端的易用性设计

正0概述监控系统是指总控和传输系统内主要设备(包括网络设备)的监控、设备远程控制和设备/信号实时监测,实现信号质量和设备状况的自动监测告警、系统信号处理和系统信号智能化管理监控。监控系统是总控和传输系统确保安全的重要系统,包括设备监测、信号监测、网络监测、环境监测和报警综合处理等几部分,通过对系统各组成部分的设备运行状态、各节点信号的技术质量进行监测、判断、智能策略分析,     

基于GSM网络的路灯监控系统

基于GSM网络的路灯监控系统是一个综合利用GSM网络移动通信技术、计算机网络技术、自动检测与控制技术及新型传感器技术等构成的智能无线监控系统。该系统充分利用GSM网络覆盖范围广、性能稳定可靠、使用方便及费用低廉等特点,以GSM网络作为监控系统数据传输通道,对路灯照明设备的工作状态、运行参数、安全因素及运行环境等实行远程无线监测、控制,维护管理人员通过手机可以随时、随地对路灯照明系统进行监测、控制,实现了路灯照明系统运行维护的智能化、现代化。     

基于移动运维IT综合监控系统实现研究

通过搭建移动运维监控系统架构平台、开发移动终端APP应用软件,从而实现IT系统综合监控移动运维的目的。系统采用全分布式架构,搭建采集服务器和在被监控设备上安装AGENT,采用SNMP协议、ICMP协议及IPMI协议等采集技术对网络中的各类IT资源进行监控,从而自动发现IT资源的健康信息、故障信息,并在此基础上对资源的配置、性能、告警情况进行分析,从而实现IT资源的全面监控管理。移动运维IT综合监控系统为IT系统故障及时发现、及时处理提供了宝贵的时间,减少了用户的不良感知。     

远程智能视频实时监控系统

当前,住宅的安全性越来越受到住户的关心,一套使用方便、可全天候工作的家用远程智能视频监控系统将会给主人增加安全感。本文介绍的系统具有以下特点:远程实时视频监控;全方位监控(门、室内、窗、室外);智能报警(自动电话报警、自动声音报警);PC控制,自动保存数据、图像;微波、视频、机械、红外传感技术综合应用,提高监控效果;工作方式灵活可控;成本低;使用简单;易于扩展,用途广泛。系统设计随着计算机技术的发展,通过计算机远程控制技术和多种传感器技术实现远程监控已经变得非常现实,技术也日益完善。将计算机远程控制技术和家用监控系…     

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.     

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.     

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.     

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.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks