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Wireless Security control system & Sensor Network for Smoke & Fire Detection

Wireless Security Control System & Sensor Network for Smoke ...

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2010 2nd IEEE International Conference on Advanced Management Science（IEEE ICAMS 2010）

作者： Molla Shahadat Hossain Lipu Tahia Fahrin Karim Md.Lushanur Rahman Faria Sultana Electrical & Electronic Engineering Department The University of Asia Pacific Dhaka Bangladesh Electrical & Electronic Engineering Department Primeasia University Dhaka Bangladesh IP Network Implementation DepartmentTechnology Division Axiata (Bangladesh) Limited DhakaBangladesh Technical Department Automation Drives & Control Limited Dhaka Bangladesh

The project entails the design and engineering of a wireless smoke detector unit and *** premise of the wireless network is to alert and to set off all of the smoke detectors in the network if one smoke detector is set *** hardware modules include the PIC microcontroller,temperature sensor,smoke sensor,low battery sensor,transmitter,and *** software component includes the program and code implemented via the PIC *** its completion and entirety,the smoke detector unit properly functions and in the manner it was originally planned and designed.

关键词： Photoelectric Smoke Detectors,Wireless Detector Network,PIC16F8777A

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Local entropy difference-fast marching method for leak diagnosis and localization

Local entropy difference-fast marching method for leak diagn...

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IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： Ling Zhao Tao Wang Wei Fan Nan Ge Tong Zhao Guangzheng Peng School of Automation Complicated System of Intelligent Control and Decision Key Laboratory of Education Ministry Beijing Institute of Technology Beijing China Department of Engineering Physics Tsinghua University Beijing China

In this paper, an effective technique for leak diagnosis and localization which couples the local entropy difference method (LEDM) to the fast marching method (FMM) is proposed. A computer-based system is described to combine a specific pneumatic circuit with an on-line infrared camera which is used to test the air-tightness of a test vessel. The test object is charged with cryogenic compressed air and its temperature field is acquired by infrared thermography in this system. Then, both the leakage point and its edge can be identified by means of the designed LED-FM method. An experiment is conducted that confirms that the leak diagnosis and localization method presented in this paper is effective in diagnosing leakage points and in extracting accurate leakage edges, in spite of the presence of surface defects.

关键词： Entropy Pixel Image edge detection Level set Cameras Equations Probes

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Stochastic parallel algorithm based evaluation of available transfer capability

Stochastic parallel algorithm based evaluation of available ...

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2010 5th International Conference on Critical Infrastructure, CRIS 2010

作者： Wei, Junqiang Li, Gengyin Zhou, Ming Lo, K.L. Department of Mathematics North China Electric Power University Changping District Beijing 102206 China Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control Ministry of Education North China Electric Power University Changping 102206 Beijing China Department of Electronic and Electrical Engineering University of Strathclyde Glasgow G1 1XW United Kingdom

ISBN: (纸本)9781424480814

In practical power markets, Available Transfer Capability (ATC) is crucial for transmission customers, system operators and power marketers to make a good choice. It is an indication of the expected transfer capability remaining on the transmission network. In order to assure the secure, economic, stable and reliable operation of power systems, the assessment of ATC should be carried out instantly. Most of the existing ATC calculation are mainly focused on AC power systems and based on deterministic techniques. As high performance computing has been extensively used in scientific computation and technology, less work has been done on evaluation of ATC by using parallel algorithm. This paper is dealing with the evaluation of ATC by stochastic parallel algorithm in an AC power system. Due to the stochastic nature of power system behaviors, it is important to assess ATC from a statistical and risk analysis point of view. Considering the dynamics, time-varying and uncertainties of power systems, several statistical indices is presented to evaluate ATC. They are calculated based on Monte Carlo simulation and parallel computing. The system operation states can be simulated by Monte Carlo method, and the parallel algorithm based on MATPOWER (A MATLAB™ Power system Simulation Package) is developed. Case study with an IEEE 30-bus power system is used to verify the presented approach. Five-number summary and other statistical indices of ATC are calculated. The results show that the proposed method can elapse shorter computation time and it is more effective and practical. Some new attractive issues are suggested at the end. © 2010 IEEE.

关键词： Parallel algorithms

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Monte Carlo simulation based assessment of available transfer capability in AC-DC hybrid systems

Monte Carlo simulation based assessment of available transfe...

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2010 5th International Conference on Critical Infrastructure, CRIS 2010

ISBN: (纸本)9781424480814

Available transfer capability (ATC) is defined as a measure of the system's capability for transfers of power for further commercial activity, over and above already committed uses. In practical power markets, ATC can provide important information for transmission customers, system operators and power marketers. The assessment of ATC should be carried out to assure the secure, economic, stable and reliable operation of power systems. Most of the existing ATC calculation are mainly focused on AC power system and based on deterministic techniques. As high voltage direct current (HVDC) power distribution systems have been extensively used in modem transmission network, less work has been done on evaluation of ATC in AC-DC hybrid power system. This paper is dealing with the evaluation of ATC for the integration of HVDC link with an AC power system. The mathematical model of ATC for AC-DC hybrid power system is proposed. Due to the stochastic nature of power system behaviors, it is important to assess ATC from a statistical and risk analysis point of view. Considering the dynamics, time-varying and uncertainties of hybrid power systems, several statistical indices are presented to evaluate ATC and they are calculated based on Monte Carlo simulation. States of system operation can be simulated, and the algorithm based on MATPOWER (A MATLAB™ Power system Simulation Package) is developed in the environment of MATLAB 7.5. Case study with a modified IEEE 30-bus AC-DC hybrid power system is used to verify the presented approach. Sequential solution method is employed to deal with the AC-DC power flow. Fivenumber summary and other statistical indices of ATC are calculated. The results show that the proposed method is effective and practical. The research achievements are undergoing to transfer to the application in other hybrid power systems with different control style, and some new problems are suggested at the end of paper. © 2010 IEEE.

关键词： MATLAB

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A flexible control of robot hand with three fingers

A flexible control of robot hand with three fingers

引用

International Conference on control, automation and systems ( ICCAS)

作者： Jin-Hwan Sok Tae-Hee An Jun-Hong Kim In-Man Park Sung-Hyun Han Department of Advanced Engineering Graduate School Kyungnam University Masan South Korea Department of Electronic Engineering Pusan National University busan South Korea Intel Company Limited Changwon South Korea Division of Mechanical System and Automation Engineering Kyungnam University Masan South Korea

In this paper we present an experimental performance for the validation of a robotic hand with three-finger applications. The increasing requirement for robotic applications in dynamic unstructured environments is motivating the need for dextrous end-effectors which have the wide variety of tasks and objects encountered in these environments. The human hand is a very complex grasping tool that can handle objects of different sizes and shapes. Many research activities have been carried out to develop artificial robot hands with capabilities similar to the human hand. This hand gripper is the wide working space compared with its physical dimensions and the capability to deal with objects in working environment conditions. This capability is achieved by using force/torque sensor and by properly controlling and coordinating the gripper and the carrying arm. After a brief illustration on the main features of the gripper, the experimental activity is presented and the results achieved are discussed. This system also aims to substitute the astronauts in periodical operations with a semi-autonomous robotic device. Note that with this control structure, it is also very simple to connect the arm/gripper system using Internet to other computational resources or robotic devices, for example to emulate tele-operation tasks.

关键词： Fingers Robot sensing systems Force Grippers Robot kinematics Force sensors

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Modeling and simulation of a microturbine generation system based on PSCAD/EMTDC

Modeling and simulation of a microturbine generation system ...

引用

International Conference on Critical Infrastructures, CRIS

作者： Gang Li Gengyin Li Wei Yue Ming Zhou K L Lo Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control under Ministry of Education North China Electric Power University Beijing China Department of Electronic and Electrical Engineering University of Strathclyde Glasgow UK

Distributed generation (DG) technology has drawn increasing attention for its tremendous benefits to customers, utilities and the environment. Furthermore, microturbine based power generation has become the most promising DG for its excellent record of improving system stability and economy. In this paper we develop a complete mathematic model, which includes the microturbine, a permanent magnet synchronous generator (PMSG), a three-phase bridge AC to DC rectifier, a boost converter and a DC to AC inverter. The simulated microturbine generation system (MTGS) model is a single shaft type with control systems and capable of regulating its output power in grid-connected mode. Also, the design and modeling of a MTGS which is suitable for isolated operation are explained with the ability of electronic controls that maintains the output voltage at their prescribed levels. Different load conditions are applied to the MTGS for evaluation of the validity and practicability of the model. Simulation studies have been carried out in PSCAD/EMTDC under different load conditions. Simulation results testify that the MTGS developed from this model can produce predictable results with these control methods.

关键词： Fuels Mathematical model Load modeling Inverters Power generation Voltage control Torque

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An improved grey model for forecasting spot and long term electricity price

An improved grey model for forecasting spot and long term el...

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International Conference on Power system Technology (POWERCON)

作者： Zheng Yanan Gengyin Li Ming Zhou Shan Lin K L Lo Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control under Ministry of Education North China Electric Power University Beijing China Department of Electronic and Electrical Engineering University of Strathclyde Glasgow UK

With the deepening reform to power industries, power systems are going to gradually open the demand side and the power consumers have to face the changes of their role in the market, and make a preliminary long-term forecasting for the electricity prices. In order to consider the relations between the spot market and the long-term contract market, this paper builds a multi-electricity price grey model to comprehensive forecast the prices of the 2 markets; further researches the structure of the background value, and improves the multi-electricity price grey model; and introduces the residual error, the related grade, the mean variance ratio and the little probability of error as test indexes. The test results show that the multi-electricity price grey forecasting model and its improved model have better accuracy, and the improved model has stronger adaptability and extends the application range.

关键词： Forecasting Contracts Predictive models Electricity Accuracy Fitting Indexes

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The generating mechanism and optimal control of power quality in micro-grids

The generating mechanism and optimal control of power qualit...

引用

International Conference on Power system Technology (POWERCON)

作者： Xi Li Zhongqiu Wang Gengyin Li Ming Zhou K L Lo Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control under Ministry of Education North China Electric Power University Beijing China Department of Electronic and Electrical Engineering University of Strathclyde Glasgow UK

As an important component of distribution network, micro-grid is the necessarily development trend for future. Micro-grid has greatly improved the random problems of distributed generation (DG). However, DGs, the power electronic equipments inevitably bring about power quality problems, especially voltage flicker and harmonics. This paper tries to study the operating regulations of micro-grid in order to find out the generating mechanism and propagation characteristic of power quality problems. Taking the photovoltaic (PV) system for an example, the micro-grid simulation model has been set up. The experiments show that an appropriate control strategy coordinating every part can improve the power quality of micro-grid greatly. This paper finds out the factors affecting power quality and their harm degrees, explaining the reasons of power quality problems. Coordinating every unit, this paper set up an optimal control strategy and proper parameter settings, trying to improve power quality of micro-grid to the largest extent.

关键词： Power quality Biological system modeling Inverters Harmonic analysis Power grids Integrated circuit modeling Voltage fluctuations

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Energy storage control for the Photovoltaic generation system in a micro-grid

Energy storage control for the Photovoltaic generation syste...

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International Conference on Critical Infrastructures, CRIS

作者： Zhongqiu Wang Xi Li Gengyin Li Ming Zhou K L Lo Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control under Ministry of Education North China Electric Power University Beijing China Department of Electronic and Electrical Engineering University of Strathclyde Glasgow UK

Distributed generation (DG) that uses renewable energy sources has an unstable output and this can negatively affect existing electric power systems. In order to reduce above impact, we need to develop an energy control system to control the output through individual DG installed in a micro-grid. First, this paper designs a grid-connected Photovoltaic (PV) system and introduces the operation principle of the various parts as well with the control strategy of the power flow. The design of energy storage is of great significance as the output power of PV cells array is greatly affected by the light intensity and the temperature change. Then, it uses the battery as the energy storage device and designs the charge-discharge control strategy according to the characteristics of the battery. Finally it verifies the feasibility of the energy storage control strategy through the simulation models which is built based on the PSCAD/EMTDC platform.

关键词： Batteries Discharges Voltage control Arrays Solar power generation

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Fundamental modeling of vehicle power network system using VHDL-AMS

Fundamental modeling of vehicle power network system using V...

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International Symposium on Power electronics, Electrical Drives, automation and Motion, SPEEDAM

作者： Shingo Ueno Kimitoshi Tsuji Takashi Abe Tsuyoshi Higuchi Koichi Shigematsu Department of Electrical and Electronic Engineering Nagasaki University Nagasaki Japan Advanced Vehicle Control System Eng. Dev. Toyota Motor Corporation Susono Shizuoka Japan CYBERNET SYSTEMS Company Limited Nagoya Japan

The vehicle system is a multi-domain system that requires many branches of science and engineering. Therefore the development of the vehicle system requires the use of design methodologies that utilize simulations, which have grown increasingly sophisticated in recent years. This paper describes how VHDL-AMS was used to model the powertrain, alternator and battery system that are the basic elements of the vehicle power network system, and examines the simulation results with the aim of realizing a system simulation whose scope covers the entire vehicle.

关键词： Power system modeling Mechanical power transmission Alternators Battery powered vehicles Vehicle driving Circuit simulation Engines Automotive engineering Power system simulation Carbon dioxide

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