输电线路鸟害视频网络实时监控系统设计

常规系统聚类视频数据时,忽略了结构信息的相似度,导致远距离传输数据的丢包率较高、时效性较差,针对这一问题,基于大数据标签技术,设计了输电线路鸟害视频网络实时监控系统。以视频采集设备、视频服务器、监控终端组成系统总体架构,压缩视频图像为视频码流,传输至监控端;预处理视频码流图像数据,聚类关联输电线路鸟害数据,实时显示鸟害监控信息。实验结果表明,该系统的平均丢包率为3.55%,平均帧率为9908fbps,平均时延为5.51ms,降低了丢包率,保障了时效性。     

重要输电通道视频监控融合技术研究

随着我国电力事业的快速发展,视频监控作为重要输电通道在线监控的重要设备承担着越来越重要的作用.目前重要输电通道上已安装和未来新装的视频监控设备品牌较多,型号繁杂,不利于集中管控和统一使用.本文采用视频协议接口技术,将各个品牌各个型号的监控摄像头进行整合,旨在促进高压输电线路的安全运行和维护.     

高压输电线路状态检修及维护技术分析

随着我国经济不断地发展,国家电网建设不断加强,输电区域逐渐扩大,这在一定程度上加大了电力的管理和监控的难度.因此,高压输电线路状态检修及维护必须得到重视.状态检修一方面保证了高压输电线路安全,另一方面确保了国家电网供电的安全.本文主要介绍了以高压输电线路状态检修的原理为基础的高压输电线路状态检修技术,并进一步阐述高压输电线路状态检修技术及必要的维护措施.     

高压输电线路接点温升在线监测系统的设计

随着高压输电线的广泛使用,我国的电力事业得到了比较快速的发展,人们的用电需求得到了较大满足。但是在供电过程中,高压输电线路接点是一个比较薄弱的环节,一旦出现发热烧坏的情况,就会导致大面积的停电,因此对高压输电线路进行有效的在线监测非常重要。文章从我国高压输电线路在线监测系统的现状出发,介绍了测量高压输电线路接点温度的方法,并对高压输电线路接点温升在线监测系统的设计进行了探讨。     

输电线路自供电可移动式实时监控系统的搭建

输电线路自供电可移动式实时监控系统是新一代基于IP架构,采用3G/4G无线网络传输的可移动式监控系统。该系统融合了定点监控、机动监控、手机监控等多种系统的应用,采用先进的压缩解码技术,实现了全方位对输电线路和工作现场的实时监控。为输电运检管理、通道治理、防外破隐患排查、现场管理等提供了重要的视频资源和依据。     

基于3G的输电线路无线视频监控系统

本文分析了传统的输电线路巡视检测手段存在的问题,提出了利用3G无线传输方式建设输电线路视频监控系统,实现在全天候不受任何因素影响的情况下完成输电线路的实时监控。解决恶劣天气、偏远山区人工巡线困难;外力破坏塔基;杆塔倾斜等影响输电线路安全的状况。     

基于3G的输电线路无线视频监控系统

本文分析了传统的输电线路巡视检测手段存在的问题,提出了利用3G无线传输方式建设输电线路视频监控系统,实现在全天候不受任何因素影响的情况下完成输电线路的实时监控。解决恶劣天气、偏远山区人工巡线困难;外力破坏塔基;杆塔倾斜等影响输电线路安全的状况。     

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。     

高压架空输电线路的设计与应用

自21世纪来,科学技术不断发展,社会经济水平也不断提高,这使人们对电能的要求越来越严格,而智能电网的建设已经成为时代的潮流.但目前,由于高压架空输电线路复杂多样,其设计上会出现各种各样的问题.因此,本文就高压架空输电线路对城市的不利影响、高压架空输电线路设计的具体要求以及高压架空输电线路设计的优化方法作了简单介绍.     

高压输电线路施工质量控制探析

高压输电线路是电力系统的重要组成部分,其施工质量的好坏不仅关系到电力的传输质量,更对整个电网系统造成重要的影响。然而,由于输电线路的施工技术不到位或者输电线路施工过程中的管理存在一定的问题,使得输电线路特别是高压输电线路的施工经常会出现一些问题,严重影响了日常生产生活对于电力的需求,更在一些特殊情况下造成一些安全事故,影响到电网系统的的进步和发展。因此,提高高压输电线路的施工质量成为目前电力工作的当务之急。本文主要介绍了高压输电线路施工的几个重要环节,分析了输电线路施工中的几个重要问题,希望对先关工作人员有所指导和帮助。     

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.     

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     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first