检索结果-内蒙古大学图书馆

Motion vehicles tracking in intelligent transportation visual surveillance systems

Nanjing Li Gong Daxue Xuebao/Journal of Nanjing University of Science and Technology 2012年第SUPPL.2期36卷 216-222页

作者： Wu, Lin-Feng Xiong, Gang Qian, Shou-Yi Xie, Li Zhejiang Provincial Key Lab. of Information Network Technology Department of Information Science and Electronic Engineering Zhejiang University Hangzhou 310027 China State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing 100190 China Cloud Computing Industrial Technology Innovation and Incubation Center Dongguan Research Institute of CASIA Chinese Academy of Sciences Dongguan 523808 China Wenzhou Research Institute of Electronics and Information Wenzhou 325003 China

In terms of the difficulty of vehicle tracking in complex environment of the visual surveillance system, an object tracking algorithm is proposed for the applications in practical visual surveillance systems for intelligent traffic. A block-based Gaussian mixture background modeling method for object detection is presented to reduce the computational complexity of moving vehicle object abstraction. An adaptive tracking algorithm fused with color features and texture features is described to better adapt the traffic scene variation. The experimental results show that the proposed algorithm can effectively deal with the complex urban traffic conditions and the tracking performance is better than the conventional particle filter method and single feature based non-adaptive object tracking method.

关键词： Tracking (position)

来源：评论

学校读者我要写书评

暂无评论

Dynamic identifying and tracking framework for cutters using RFID technology in digital workshop

Dynamic identifying and tracking framework for cutters using...

引用

2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011

作者： Zhou, Guanghui Xiao, Zhongdong Wang, Ben Jiang, Pingyu State Key Laboratory for Manufacturing Systems Engineering Xi'an China School of Mechanical Engineering Xi'an Jiaotong University Xi'an China School of Management Xi'an Jiaotong University Key Lab. of the Ministry of Education for Process Control and Efficiency Engineering Xi'an China High-Performance Materials Institute Florida State University Tallahassee FL United States

ISBN: (纸本)9781612840857

For effectively solving the problem of accurate tracking and control of cutters in digital workshop, this paper presents a novel RFID-based dynamic identifying and tracking framework for cutters in digital workshop (RFID-DITF-CDW). An overall architecture for RFID-DITF-CDW is established and its key enabling technologies including RFID-based realtime information collecting, dynamic misuse detecting of cutter change on CNC machines, real-time position identifying, status tracking, and service life forecasting for cutters are discussed. Finally, a prototype system of RFID-DITF-CDW is developed and applied in a real typical CNC machining workshop to demonstrate the validity of presented framework and enabling technologies. © 2011 IEEE.

关键词： Radio frequency identification (RFID)

来源：评论

学校读者我要写书评

暂无评论

Research on pilot protection applied in aircraft annular power distribution system

Research on pilot protection applied in aircraft annular pow...

引用

2011 International Conference on Advanced Power System Automation and Protection, APAP 2011

作者： Jiang, Zhongshan Liu, Yanping Wang, Bin Dong, Xinzhou Wang, Yan Naval Aeronautical and Astronautical University Yantai 264001 China State Key Lab. of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Haidian Beijing 100084 China Beijing Wuzi University Beijing 101149 China

ISBN: (纸本)9781424496198

In the annular power distribution system, short-circuit fault of bus-bars will do fatal harm to aircraft, and it is necessary to protect the ring-net bus-bars. Protecting bus-bars has to meet the requirements that protection devices do not refuse to operate and backup protection devices do not act incorrectly. This paper builds a model about the annular power distribution system and stimulates the fault system based on MATlab. According to the fault features, directional blocking pilot protection is put forward. The results prove that the new method can achieve automatic isolation of the bus-bar at fault, ensures the safety of aircraft power distribution system, and it is of great importance to improve the reliability of aircraft power distributing. © 2011 IEEE.

关键词： MATlab

来源：评论

学校读者我要写书评

暂无评论

Output error method for identification of multiple-model process with transition

Output error method for identification of multiple-model pro...

引用

作者： Zhao, Yu Huang, Biao Su, Hongye Chu, Jian State Key Lab. of Industrial Control Technology Institute of Cyber Systems and Control Zhejiang University Hangzhou 310027 China University of Alberta Canada Department of Chemical and Materials Engineering University of Alberta Edmonton AB T6G 2G6 Canada

This paper is concerned with the identification of multiple model process with transition using the output error (OE) method. Local multiple linear models with output error model structure are identified at fixed operating points first and then a global nonlinear model is approximated by interpolating the multiple linear models with exponential weighting functions. With all the obtained initial values of the system's parameters, nonlinear optimization strategy is implemented to find the optimal values of the parameters for both the local multiple models and their corresponding weighting functions. Finally a more accurate global model can be obtained. The effectiveness of the proposed approach is demonstrated through simulation examples. © 2011 Zhejiang University.

关键词： Errors

来源：评论

学校读者我要写书评

暂无评论

Research on characteristics of surface electric field on transmission lines under lightning stroke

Research on characteristics of surface electric field on tra...

引用

2011 7th Asia-Pacific International Conference on Lightning, APL2011

作者： Li, Qian Yu, Zhanqing Zeng, Rong Zhang, Yong Li, Zhizhao Zhuang, Chijie Liao, Yongli State Key Lab. of Control and Simulation of Power Systems and Generation Equipments Department of Electrical Engineering Tsinghua University Haidian District Beijing 100084 China Department of Mathematical Sciences Tsinghua University Haidian District Beijing 100084 China Electric Power Research Institute CSG Guangzhou China

ISBN: (纸本)9781457714665

Lightning is a major cause of power interruptions in power transmission lines. Nowadays the Leader Progression Model is an advanced method to evaluate the shielding failure probability of transmission lines. Calculating the surface electric field on phase conductors and ground wires precisely is important, because the surface electric field has great effect on the upward leader inception. In this paper, the influence of lightning current and some other factors on surface electric field were analyzed. © 2011 IEEE.

关键词： Electric lines

来源：评论

学校读者我要写书评

暂无评论

Traveling waves based faulted feeder selector and its field application

Traveling waves based faulted feeder selector and its field ...

引用

2011 International Conference on Advanced Power System Automation and Protection, APAP 2011

作者： Shi, Shenxing Wang, Jun Li, Aiming Du, Xinchun Cao, Xiaoxia Du, Yajun Dong, Xinzhou State Key Lab. of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Haidian District Beijing 100084 China Yulin Power Company Shaanxi 719000 China China Jiuquan Satellite Launch Center Plumbing Electrical Station Jiuquan 732750 China

ISBN: (纸本)9781424496198

The paper proposes faulted feeder selector in power distribution system with neutral non-effectively grounded. At first, the paper presents basic principle of single-phase-to-ground fault feeder selection based on traveling waves, which compares amplitude and polarity of the initial current traveling waves in all feeders. Then the implementation scheme, including hardware design and software flowchart is presented. At last field application of faulted feeder selector is introduced. The field operation results validated the correctness of faulted feeder selector based on transient traveling wave. © 2011 IEEE.

关键词： Electric grounding

来源：评论

学校读者我要写书评

暂无评论

Research of protection communication system in process level of intelligent substation

Research of protection communication system in process level...

引用

2011 International Conference on Advanced Power System Automation and Protection, APAP 2011

作者： Xu, Fei Wang, Bin Dong, Xinzhou Cao, Runbin Liu, Kun Yang, Yuelin Wu, Tingting State Key Lab. of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Beijing 100084 China College of Information and Electrical Engineering China Agricultural University China School of Electrical Engineering and Renewable Energy China Three Gorges University Yichang 443000 China

ISBN: (纸本)9781424496198

The paper mainly focuses on the communication problem based on IEC61850 communication protocol. As in the process level communication system: MU (Merging Unit)-Switch-DIPC (Digital Integrated Protection and control system), the stability of SMV packets transmission is very important. The transmission delay of the process level communication is the key problem that may restrict the protection algorithm and capability. In the meantime, GPS synchronization problem of MUs, protection capability of the integrated protection device and stability of SMV message transmission based on the existing DIPC(DIP-01) system will also be discussed in the paper. Through the experiment and analysis, the paper gives out the key factors that lead to the message transmission delay and packets loss. The work at last gives out some primary ideas to improve the protection capability. © 2011 IEEE.

关键词： Ethernet

来源：评论

学校读者我要写书评

暂无评论

Designation and development of hardware platform for intelligent ter-minal in 126kV smart substation

Designation and development of hardware platform for intelli...

引用

2011 International Conference on Advanced Power System Automation and Protection, APAP 2011

作者： Sun, Tong Wang, Bin Dong, XinZhou Zhang, ShuJian Kang, MingCai Cao, RunBin School of Automation Nanjing University of Science and Technology Nanjing Jiangsu 210094 China State Key Lab. of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Haidian District Beijing 100084 China Electrical Engineering and Automation Hefei University of Technology Hefei Anhui 230009 China

ISBN: (纸本)9781424496198

According to the demand of 126kV intelligent switch with intelligent operative box, an intelligent terminal device by using cooperation control of embedded CPU (STM32F103ZET6 ARM) and Field Programmable Gates (Cyclone II EP2C8Q208C8 FPGA), which is up to the IEC61850 standard, is designed in this paper. Research program of the device is discussed. Starting from the modularization structure design, function of each module, circuit design and implementation method were introduced in detail. A hardware platform was established according to the design. Finally, the article confirmed the correctness of the hardware platform primarily through experimental method. © 2011 IEEE.

关键词： Field programmable gate arrays (FPGA)

来源：评论

学校读者我要写书评

暂无评论

Demand analysis of the information sharing among multi-bays through the process networks in intelligent distribution substation

Demand analysis of the information sharing among multi-bays ...

引用

2011 International Conference on Advanced Power System Automation and Protection, APAP 2011

作者： Yang, YueLin Wang, Bin Wen, BoYing Dong, XinZhou Wu, TingTing Liu, Kun College of Information and Electrical Engineering CHINA Agricultural University Beijing 100083 China State Key Lab. of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Beijing 100084 China School of Electrical Engineering and Renewable Energy China Three Gorges University Yichang 443000 China

ISBN: (纸本)9781424496198

Multi-bay information sharing has very important significances for the the enhancing of the relay characteristics and improving of the system control methods. With the summary of distribution substation busbar protection, small current grounding fault line selection, non-communication double-circuit line protection, reactive power and voltage control, low frequency load shedding control programmes, It analyse the needs of the information sharing among multiple bays and the application of integrated protection. © 2011 IEEE.

关键词： Electric grounding

来源：评论

学校读者我要写书评

暂无评论

Algorithm design of traffic incident automatic detection based on mobile detection

Algorithm design of traffic incident automatic detection bas...

引用

2011 IEEE International Conference on Service Operations, Logistics and Informatics, SOLI 2011

作者： Zhang, Zi Lin, Xiaoli Hu, Bin Communications Commission of Guangzhou Municipality Guangzhou 510000 China Guangzhou Communication Information Construction Investment and Operation Co. Ltd Guangzhou 510000 China Transportation Management General Station of Guangzhou Haizhu Guangzhou 510000 China State Key Lab. of Intelligent Contr. and Management of Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781457705731

Most researches of traffic incident auto-detection are based on the data from fixed detectors, which are limited by costs and position. In order to resolve this problem, existing algorithms of traffic incident automatic detection are analyzed and compared, and an algorithm of traffic incident auto-detection are provided based on mobile-detection technology. The traffic data are grouped in 5-min intervals, analyzed by a three-layer BP neural network, and utilized for traffic incident detection. 16 traffic incidents of different locations and different levels are modeled in the simulation experiment based on VISSIM, and detection rate, false alarm rate and average detection time are adopted as indicators to evaluate the algorithm. Finally, the algorithm is proved to be effective and applicable in practice. © 2011 IEEE.

关键词： Neural networks

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：