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2012 Second International Conference on Intelligent System Design and Engineering Application最新文献

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Code Differential Relative Positioning for GNSS Receivers GNSS接收机的码差相对定位
Hongliang Xu, Xin Zhang, X. Zhan
This paper introduces an algorithm to determine relative position between rover GNSS receivers. Other than the simple way of subtracting two coordinates, the proposed method is based on the code-phase differences. Pseudorange measurement differences are calculated directly, and the position difference can be derived as a solution to the linearized equation of pseudorange measurement. Principles and methods are introduced in the paper. The algorithm is validated by actual dataset, which reveals 43% improvement at maximum in the estimation error of distance between receivers.
介绍了一种确定探测车GNSS接收机相对位置的算法。与简单的两个坐标相减方法不同,本文提出的方法基于码相差。直接计算伪距测量差,位置差可作为伪距测量线性化方程的解。本文介绍了该方法的原理和方法。通过实际数据集验证了该算法的有效性,在最大情况下,接收机距离估计误差提高了43%。
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引用次数: 0
High Resolution Satellite Imagery Rectification Using Bi-linear Interpolation Method for Geometric Data Extraction 基于双线性插值方法的高分辨率卫星图像校正几何数据提取
U. Babawuro, Z. Beiji, Xu Bing
This paper introduces the rectification of a true color Satellite imagery that was synthesized out of a Quick Bird high resolution Satellite imagery for geometric data extraction. The rectification process is necessary so as to orient the satellite imagery to a planar surface and make its geometry planimetric. It establishes the image in the correct spatial location and orientation for subsequent quantitative analysis. However an overview of the geometric correction process was also highlighted. Reference system is an important factor in order to verify and identify all measurements and data collection processes from Satellite imageries. The quality of the outputs depends on how good and refined the reference system is defined. The technique uses Global Positioning System (GPS) positioning information, geo-reference and other parameters, such as interpolation method to automatically register and ortho rectify the raw imagery data. Through the process, a seamless imagery was produced. Through semi-automatic and manual editing, a standard satellite-map imagery that satisfies geometric extraction needs was produced which would subsequently be used to determine quantitatively, geometric cadastral boundaries, hence, analyzing the imagery data. The result of the satisfactory experiment for the imagery rectification shows that the total root mean square (RMS) error is 0.6152 meter, for X is 0.4119 meter and for Y is 0.4570 meters.
本文介绍了利用Quick Bird高分辨率卫星图像合成的真彩卫星图像进行几何数据提取的方法。为了使卫星图像指向一个平面并使其几何形状具有平面性,必须进行校正过程。它为后续的定量分析建立了正确的空间位置和方向的图像。然而,也强调了几何校正过程的概述。参考系统是一个重要的因素,以便从卫星图像中核实和确定所有测量和数据收集过程。产出的质量取决于参考系统定义的好坏和精炼程度。该技术利用全球定位系统(GPS)的定位信息、地理参考和插值方法等参数对原始影像数据进行自动配准和正校正。通过这个过程,产生了一个无缝的图像。通过半自动和手动编辑,产生了满足几何提取需要的标准卫星地图图像,随后将用于定量确定几何地籍边界,从而分析图像数据。实验结果表明,图像校正总均方根误差(RMS)为0.6152 m, X为0.4119 m, Y为0.4570 m。
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引用次数: 3
Intelligent Surface-normal Adjustment System and Application in Aeronautical Drilling Robot 智能面法向调节系统及其在航空钻井机器人中的应用
Rui Zhang, Peijiang Yuan, Maozhen Gong
Aeronautical drilling robot has been widely adopted in aircraft manufacturing with its high efficiency and reliability. Automatic drilling, however, requires the drill bit to be perpendicular to the curved surface of fuselage. In this paper, we present an intelligent surface-normal adjustment system to deal with the problem. This system calculates surface-normal vector by obtaining three measurement positions with laser range sensors and provides correction values to an innovative binary angular adjustment mechanism to regulate the feed direction of the drilling bit in real-time. We carried out a number of experiments on the aeronautical drilling robot. The experimental results demonstrate that this system can decrease the surface-normal error to less than ±0.5° and well meet the demand of modern aircraft manufacturing.
航空钻井机器人以其高效、可靠的特点在飞机制造中得到了广泛的应用。而自动钻孔则要求钻头垂直于机身曲面。本文提出了一种智能曲面法向调节系统来解决这一问题。该系统通过激光测距传感器获取三个测量位置来计算表面法向量,并为创新的二元角度调整机构提供校正值,以实时调节钻头的进给方向。我们对航空钻井机器人进行了多项实验。实验结果表明,该系统可将表面法向误差减小到±0.5°以内,满足现代飞机制造的要求。
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引用次数: 8
OTS: An Optimized Method for Efficient Processing of XML Twig Patterns OTS:有效处理XML小枝模式的优化方法
Yingfei Gao
As a core operation to twig query processing, finding all the occurrences of a twig pattern in an XML document has attracted much attention. Although existing methods are efficient for quires with ancestor-descendant edges, our analysis shows that they all suffer from redundant CPU cost. Moreover, large amount of redundant path solutions may be produced when parent-child edges appeared below branch nodes. We propose an optimized holistic twig join algorithm, namely OTS, towards efficient processing of a twig query. By pre-checking at three steps, OTS can not only reduce the CPU cost but also eliminate redundant path solutions. As a result, it broadens the class of queries with CPU complexity linear with the sum of sizes of the input lists and the output lists. Experimental results on various datasets indicate that OTS performs significantly better than the existing ones.
作为分支查询处理的核心操作,查找XML文档中出现的所有分支模式引起了人们的广泛关注。虽然现有的方法对于具有祖先-后代边缘的查询是有效的,但我们的分析表明,它们都存在冗余的CPU成本。此外,当分支节点下出现父-子边时,可能产生大量冗余路径解。我们提出了一种优化的整体小枝连接算法,即OTS,以有效地处理小枝查询。通过三步预检查,OTS不仅可以降低CPU成本,还可以消除冗余的路径解决方案。因此,它扩大了CPU复杂度与输入列表和输出列表大小之和成线性关系的查询类别。在各种数据集上的实验结果表明,OTS的性能明显优于现有的OTS。
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引用次数: 0
Study on Effect of Current Transformer and Its Secondary Cable to Travelling Wave Propagation Characteristic of Electric Power Lines 电流互感器及其二次电缆对电力线路行波传播特性影响的研究
Tan Yonghong, Zhen Wei, Huang Zhen, Liu Minzhong, Pu Wei
Through the research on the traveling wave transform characteristics of the current transformers (CTs), a description method is proposed by using transfer function to replace the phase- and amplitude-frequency characteristics of the current transformers. In the presented technique, the free alternating current of various frequencies is injected into the primary side of the current transformer by using a variable capacitor and a DC voltage source. The transfer characteristics under different frequencies were measured. According to the characteristics, the transfer function was constructed, and then the model of the secondary cable was added. The simulation result validates that the traveling wave changed dramatically after traveling through the CT and secondary cable, thus it will have significant impact on the accuracy of traveling wave protection and fault location devices.
通过对电流互感器行波变换特性的研究,提出了用传递函数代替电流互感器的相频特性和幅频特性的描述方法。在该技术中,利用可变电容和直流电压源将各种频率的自由交流电注入电流互感器的一次侧。测量了不同频率下的传输特性。根据其特点,构造了传递函数,并在此基础上增加了二次缆的模型。仿真结果验证了行波在穿过CT和二次电缆后发生的巨大变化,将对行波保护和故障定位装置的精度产生重大影响。
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引用次数: 4
Design of Runoff Collection System of Expressway across Water Sensitive Areas 跨水敏感区高速公路径流收集系统设计
Guiqiang Liu, Jinlan He, L. Zeng, Rong Tang
If pavement runoff formed by the rain washed road surface pollutants is directly discharged while not be treated, the surrounding environment, especially receiving water will be subject to damage. The expressway inevitably passes through water sensitive areas sometimes. In order to avoid polluting water source, pavement runoff needs to be treated and pollutant control index meet Environmental Quality Standards for Surface Water (GB 3838-2002) in China before being discharged. Aiming at drainage design of expressway across water sensitive areas, this paper has illustrated drainage design concept of collecting independently rain on pavement and slope and solved some problems in process of designing runoff collection system of expressway across water sensitive areas. The results of this research will provide reference for the related engineering examples.
如果雨水冲刷的路面污染物形成的路面径流不经处理直接排放,会对周围环境,特别是受水环境造成破坏。高速公路有时不可避免地要经过水敏感地区。为了避免污染水源,需要对路面径流进行处理,污染物控制指标达到中国《地表水环境质量标准》(GB 3838-2002)后才能排放。针对跨水敏感区高速公路的排水设计,阐述了路面、坡面雨水独立收集的排水设计理念,解决了跨水敏感区高速公路雨水收集系统设计过程中的一些问题。研究结果可为相关工程实例提供参考。
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引用次数: 0
Latest Technical Specifications and Testing Procedures for Grid-Connected Photovoltaic Power Station in China 中国光伏并网电站最新技术规范和试验规程
Junjun Zhang, Rongrong Ju, Xiaodi Qin, Songming Zhu, Chen-guang Niu
In recent years, Chinese government has published many subsidy policies for photovoltaic power, such as "BIPV" "Golden Sun Demonstration Project¡" and "Bidding for Concession". Meanwhile, several local governments also published their own subsidy policies to increase the investment subsidies or to publish electricity price in tariff for photovoltaic power projects. The publishing of these policies have been promoting the rapid growth in total amount of installed photovoltaic power. Furthermore, PV power permeability has reached an upper value in some region. The instability, random city, and upper permeability acting on PV power, bring serious influence to safe and stable operation of the grid in China. Therefore, State Grid Corporation of China (SGCC) has published two enterprise standards, Q/GDW 617-2011 "Technical specifications for photovoltaic power station connected to the grid" and Q/GDW 618-2011 "Testing procedures for photovoltaic power station connected to the grid", which specifies the prospective technical parameters at different voltage rating, capacity and grid-connected types, and required testing items and methods. Focused on grid connected PV power station, the standards specifies the requirement of testing parameters, including active power control, voltage/reactive power regulation, response to abnormal voltage/frequency, power quality, low voltage ride through (LVRT), anti-islanding protection, back-feed protection, reconnection, lightening & ear thing protection, electromagnetic compatibility, surge immunity, electric energy metering, and communication & signal. In this article, it will describe those two standards in details, and analyse specific parameter and established basis required by each technical clause.
近年来,中国政府出台了多项光伏发电补贴政策,如“BIPV”、“金太阳示范工程”、“特许招标”等。与此同时,一些地方政府也公布了各自的补贴政策,增加光伏发电项目的投资补贴或以电价形式公布光伏发电项目的电价。这些政策的出台推动了光伏发电装机总量的快速增长。此外,光伏发电渗透率在某些地区已经达到了较高的水平。光伏发电的不稳定性、随机性、高渗透率等问题严重影响着中国电网的安全稳定运行。为此,中国国家电网公司(SGCC)发布了Q/GDW 617-2011《光伏电站并网技术规范》和Q/GDW 618-2011《光伏电站并网试验规程》两项企业标准,规定了不同电压额定值、容量和并网类型下的前瞻性技术参数,以及需要进行的试验项目和方法。该标准以并网光伏电站为重点,规定了测试参数的要求,包括有功功率控制、电压/无功调节、电压/频率异常响应、电能质量、低电压穿越(LVRT)、防孤岛保护、反馈保护、重接、避雷器保护、电磁兼容、浪涌抗扰度、电能计量、通信信号等。本文将对这两个标准进行详细的描述,并对每个技术条款所要求的具体参数和既定依据进行分析。
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引用次数: 3
Multistatic Ultra-wideband Localization for NLOS Environments NLOS环境下的多静态超宽带定位
Hong Ding, Chen Chen, Shirui Peng, Xin Li, Linhua Zheng
A procedure for the localization of a indoor target is proposed in this paper. In the through wall imaging or localization scenario, the imaging quality and the positioning precision is inevitably affected by the effects of wall, which must be taken into consideration and compensated. A multistatic radar system using the ultra-wideband pulses is used to estimate the location of a target inside a room. The wall effects are embedded in the proposed positioning algorithm, which gives better positioning precision than existing methods. Simulation results validate the validity of the theoretical analysis and positioning algorithm.
本文提出了一种室内目标的定位方法。在穿墙成像或定位场景中,成像质量和定位精度不可避免地会受到墙的影响,必须加以考虑和补偿。一种利用超宽带脉冲的多基地雷达系统被用来估计房间内目标的位置。该算法将墙体效应嵌入到定位算法中,比现有的定位方法具有更高的定位精度。仿真结果验证了理论分析和定位算法的有效性。
{"title":"Multistatic Ultra-wideband Localization for NLOS Environments","authors":"Hong Ding, Chen Chen, Shirui Peng, Xin Li, Linhua Zheng","doi":"10.1109/ISDEA.2012.512","DOIUrl":"https://doi.org/10.1109/ISDEA.2012.512","url":null,"abstract":"A procedure for the localization of a indoor target is proposed in this paper. In the through wall imaging or localization scenario, the imaging quality and the positioning precision is inevitably affected by the effects of wall, which must be taken into consideration and compensated. A multistatic radar system using the ultra-wideband pulses is used to estimate the location of a target inside a room. The wall effects are embedded in the proposed positioning algorithm, which gives better positioning precision than existing methods. Simulation results validate the validity of the theoretical analysis and positioning algorithm.","PeriodicalId":267532,"journal":{"name":"2012 Second International Conference on Intelligent System Design and Engineering Application","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126026247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
A Framework for Agent-Based Collaborative Information Processing in Distributed Sensor Network 分布式传感器网络中基于agent的协同信息处理框架
Zhi-zhong Liu, Yihui He, Xuguang Ye
CIP in DSN is one of the most problems in application based on sensor network. Three levels of CIP, i.e. signal level, information level and knowledge level, are distinguished in this paper. To support all of these CIPs, A general framework integrating the sensor network into agent-based grid is proposed. The framework uses the agent as the interface of access the sensor network, and applies the mobile agent gathering the information from sensor network. And the comprehensiveness, Scalability, Autonomy cooperation and Energy efficiency of this framework are better than others.
DSN中的CIP是基于传感器网络的应用中最常遇到的问题之一。本文区分了CIP的三个层次:信号级、信息级和知识级。为了支持所有这些cip,提出了一个将传感器网络集成到基于agent的网格中的通用框架。该框架采用智能体作为接入传感器网络的接口,并应用移动智能体从传感器网络中采集信息。该框架具有较好的全面性、可扩展性、自治协作性和能效性。
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引用次数: 0
Characteristic Analysis of Temperature Sensor in Dynamic Capacity Increase of High Voltage Electric Power Transmission Lines 高压输电线路动态增容中温度传感器特性分析
Y. Dai, Anqi Song, Wei Wang, Yangchun Cheng, Yongchun Liang, J. Kong, Kai Xiao, Yuning Zhang
Dynamic capacity increase in high voltage electric power transmission line is currently the most economical method for solving electric power transmission bottleneck nowadays. Temperature measurement error of the transmission line will affect the calculated current capacity of the transmission line. In this paper, conductor temperature model was applied to analyze the influence of the measurement error on the maximum current capacity, and Morgan formula was used for comparison. In order to decide whether the PT100 temperature sensor in this project satisfies the accuracy requirement above, a temperature experiment was conducted and a large amount of data was gathered. The measurement error of PT100 temperature sensor was analyzed mainly by statistics histogram and hypothesis testing, and gives the result of error as well as suggests a constructive approach to reduce the measurement error.
高压输电线路的动态增容是目前解决输电瓶颈最经济的方法。传输线的测温误差会影响传输线的计算电流容量。本文采用导体温度模型分析测量误差对最大电流容量的影响,并采用Morgan公式进行比较。为了确定本项目中的PT100温度传感器是否满足上述精度要求,我们进行了温度实验并收集了大量数据。主要通过统计直方图和假设检验对PT100温度传感器的测量误差进行了分析,给出了误差结果,并提出了减小测量误差的建设性方法。
{"title":"Characteristic Analysis of Temperature Sensor in Dynamic Capacity Increase of High Voltage Electric Power Transmission Lines","authors":"Y. Dai, Anqi Song, Wei Wang, Yangchun Cheng, Yongchun Liang, J. Kong, Kai Xiao, Yuning Zhang","doi":"10.1109/ISDEA.2012.460","DOIUrl":"https://doi.org/10.1109/ISDEA.2012.460","url":null,"abstract":"Dynamic capacity increase in high voltage electric power transmission line is currently the most economical method for solving electric power transmission bottleneck nowadays. Temperature measurement error of the transmission line will affect the calculated current capacity of the transmission line. In this paper, conductor temperature model was applied to analyze the influence of the measurement error on the maximum current capacity, and Morgan formula was used for comparison. In order to decide whether the PT100 temperature sensor in this project satisfies the accuracy requirement above, a temperature experiment was conducted and a large amount of data was gathered. The measurement error of PT100 temperature sensor was analyzed mainly by statistics histogram and hypothesis testing, and gives the result of error as well as suggests a constructive approach to reduce the measurement error.","PeriodicalId":267532,"journal":{"name":"2012 Second International Conference on Intelligent System Design and Engineering Application","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125227585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
期刊
2012 Second International Conference on Intelligent System Design and Engineering Application
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