摘要：
Wireless Sensor Networks (WSNs) play more and more important role in all kinds of applications. Because of its characteristics, energy consumption is an open issue in research field. In LEACH Cluster Head (CH) is selected randomly without any parameter, such as node energy, distance. There exists a probability that energy consumption is unbalanced in WSN, which causes shortening its lifetime. In this paper, we proposed a new LEACH-based protocol, Energy Weight LEACH (EW-LEACH). The main purpose of EW-LEACH is to provide important parameters, node energy, to determine the CH selection strategy. Node energy acts as a weight to alter the probability that a node becomes CH. The results of simulation show that EW-LEACH increases energy efficiency and prolong the network lifetime.
期刊：
Proceedings of 2014 4th IEEE International Conference on Network Infrastructure and Digital Content, IEEE IC-NIDC 2014,2014年:338-341 ISSN：2374-0272
摘要：
The time-frequency analysis for GPR signalencounters two problems. The first one is because of theecho signal contains very high frequency component sothe GPR system employs equivalent-time sampling,
作者机构：
[Hai Lin.Huang; Zhao Yu.Sun] School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[Lin Jie.Ding] College of Science, China Three Gorges University, Yichang 443002, China
会议名称：
3rd International Conference on Advanced Structure, Materials and Engineering, ASME 2014
摘要：
A new CMOS readout integrated circuit (ROIC) for microbolometric focal plane array (FPA) is proposed in this paper. By applying multiple-module parallel working technique, the pixel readout speed of the CMOS ROIC can reach 10 MHz, which is very suitable for large-scale microbolometer array. The CMOS ROIC of each parallel working module consists of three major parts: direct injection (DI) input circuits, column-shared integrating circuits, and common noise-suppressing circuits. The readout structure of the ROIC is simple because of the DI input, shared and common circuits, and this makes the ROIC satisfy the requirements of small-pixel microbolometric FPA. Furthermore, the voltage signals from different working modules can be output according to a certain order through a high-speed output circuit. An experimental readout chip based on the proposed ROIC has been designed and fabricated to verify its readout function and performance. The measurement results of the experimental readout chip have successfully proved that the proposed CMOS ROIC can be applied to high-speed, low-noise, large-scale and high-resolution microbolometric FPA. (C) 2014 Elsevier GmbH. All rights reserved.
会议名称：
15th Annual Conference of the Chinese-Society-of-Micro-Nano-Technology (CSMNT) / 4th International Conference of the Chinese-Society-of-Micro-Nano-Technology (CSMNT)
会议时间：
NOV 03-06, 2013
会议地点：
Tianjin, PEOPLES R CHINA
会议主办单位：
[Chen, Xiqu;Lv, Qiang] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Peoples R China.^[Hu, Xizheng] Second Artillery Coll, Expt Ctr, Wuhan, Peoples R China.
摘要：
This paper introduced a new modular multi-level converter (MMC), which could enhance the voltage and power level by sub-converter modules in series and was easy to extend to any level of output. Its structure and working mechanism were described. By analyzing the energy transfer performance of STATCOM based on MMC working conditions in the unbalance compensation, this paper studied compensation control theory in unbalanced complex conditions. To obtain compensation control response speed faster and better compensation effect, a comprehensive compensation control strategy was proposed based on direct current control mode. The simulation results show the strategy has a better tracking precision and response speed for the unbalance compensation current.
摘要：
This paper presents a new de-noising method for GPR image based on BEMD and wavelet. This method complies with the adaptability from BEMD. The method decomposes the image into a series of IMF components, then applies wavelet threshold de-noising on the selected high frequency IMF components for de-noising. In the reconstruction course, the de-noising IMF and low frequency IMF are combined. The experiment results shows the effectiveness of the method on GPR image.
作者机构：
[Li, Lin] School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[Zheng, Wen Chao] Department of Electronics and Information, Huazhong University of Science and Technology, Wuhan 430074, China
会议名称：
4th International Conference on Materials Science and Information Technology, MSIT 2014
会议时间：
14 June 2014 through 15 June 2014
关键词：
Complex image method;Electromagnetic scattering;Perfectly conducting periodic surfaces;Periodic green's function
摘要：
In this paper, an improved complex image method to derive closed form periodic Green’s function for problem of scattering from perfectly conducting periodic surfaces is considered. The complex image technique represents a close-form periodic Green’s function consisting of a finite series of real sources and two finite series of complex sources with complex locations and amplitudes. Then the integral equation with the complex images periodic Green’s function in the kernel is solved by the method of moments. Results and computational times obtained by this improved complex image method and the previous one are compared with those obtained by the spectral Kummer-Poisson’s method. Results show that the improved complex image method is more accurately than the previous one.
