bluuebunny/crossref_metadata_2025 huggingface dataset:
Finite Element Analysis of Bending Stress in the Meshing Process for Internal Gear Pairs with few Teeth Difference
Authors: Wei Yan Gang , Gu Chun Xiao , Zhang Xiu Juan
Published: September 2013

According to the transmission characteristics of the internal gear pair with few teeth difference, the models of finite element analysis are established reasonably after combining the principle of gear engagement, contact mechanics, and finite element concept and method. The relationship between the simulation model of finite element and the meshing process is made clearly. The simulation analysis is performed subtly for the meshing process of the internal gear pair using the finite element analysis method. The main factors of multi-pair teeth meshing effect have been shown and the effect of multi-pair teeth meshing on the gear bending stress is analyzed.
Study on Hybrid Electric Vehicle Noise and Vibration Reduction Technology
Authors: Liao L.Y. , Zuo Y.Y. , Liao X.H.
Published: September 2013

The hybrid electric vehicle (HEV) is becoming one of the main trends of the development of automobile technology. The structure and operation principle of HEV are introduced. The noise and vibration (NV) of engine, motor, generator, power split device, converter assembly and battery in HEV were analyzed. According to the NV characteristics in HEV, the measurements for NV control technology such as the excitation source control technology and route control technology were summarized, which provides a reference for further studying of the NV in HEV.
Study on Building Model and the Dynamic Characteristics Based on Hydraulic Circuit of Throttle Governing System
Authors: Hu Shao Gang
Published: September 2013

Throttle governing circuit system is often used in feed actuating system of machine tool to realize stepless speed regulation, which dynamic characteristics have a great effect upon the work property of machine tool. This paper discussed mathematical model of throttle governing system, dynamic characteristics analysis and improved measures, it can provide Theoretical basis for improving work property of modern machine.
The Redevelopment of Prototype System of Industrial Product Forms Based on Rhino
Authors: Gao Zhu , Ji X.M. , Zhang J.
Published: September 2013

This paper redevelops Rhino based on the Rhino script and extracts three kinds of bounding boxes (i.e. cuboid, cylinder and sphere) of product fission model, and calculates the optimal parameters of fission bounding boxes with the aid of the GUI interface built by MATLAB. The software of prototype reconstruction of product forms is developed by the use of VB.NET, which can reconstruct the product form prototype through the product CAD model. In the end, the system validity is tested and verified by the practical example of a chargeable electrical drill.
A Study on the Structure and Properties of Metal Framework Steering Wheel Coated with Polyurethane
Authors: Cao Yu Hong , Fu Xiao Guang
Published: September 2013

The frame of metal wheel coated with polyurethane is made of magnesium alloy by die casting process. The coating polyurethane (soft) is made of combined material of self-skin-formation system. The permanent deformation of steering assembly is up to the international standard after accepting the specified test of axial force and steering torque; and it also accepted further special tests, including bending fatigue endurance test, torsion fatigue endurance test, and coating force test, etc.
Research and Development on the Query Systems of NC Machining Process
Authors: Huang Jie , Shen Jian Xin
Published: September 2013

In this paper, the system architecture Integrated with cutting parameters database and process case database was proposed. Windows-based NC machining process query system was developed by using VB combined with access database, the system has turned the NC processing handbook into electronic handbook, at the same time, many real product process experiences was integrated in it, which effectively solved Electronic management of the NC machining process parameters and query. The employee can quickly accumulate experience by using the system and enrich their process acknowledge.
Design Network Teaching Evaluation System Based on MVC
Authors: Su Ya Li , Fu Bi Sheng
Published: September 2013

The traditional teaching evaluation system is high cost, complex and low efficiency. This paper proposed to use Struts and Spring and Hibernate framework technology to achieve the design of NTES based on MVC. It can remedy the defects in traditional teaching evaluation system. The NTES is now on trial and the result says that it not only can improve work efficiency, be operated simply, but also has good stability, maintainability and expansibility.
Image Retrieval Based on Color-Statistic Feature
Authors: Liu Jin Mei , Li Ji Zhong
Published: September 2013

Color is the most widely used visual feature in content based image retrieval. The visual coherence color space, HSV, is adopted to represent image. Hue component is used to denote color. Hue difference statistic is proposed to extract color change information as supplement to color feature. The image is divided into sub images equally. Color and change information is extracted in each region. After feature vector clustering and coding, image content can be expressed as vector codes. The text based analysis technology is used for image retrieval. Experiments show that the proposed method can realize efficient retrieval for unconstrained scene images.
Design and Implementation of a Data Parsing Module for Power Information Equipment Log Management System
Authors: Zhang Yi Ting , Wang Bin , Zhang Zhi Hui
Published: September 2013

in order to manage the log information of Windows servers, Linux servers, network devices and security devices in a unified, so as to query log data, analysis and audit log data conveniently, a program is put forward, in which a variety of power system information devices log data be converted into a unified relational model and integrated into the database. The data parsing module uses the Windows Workflow procedure to select, clean and merge the massive log data. The database is created and operated by Microsoft SQL Server 2005 development platform. All of the log files have to be converted into a unified format and saved in centralized storage. Experiments and test results show that the module has a good efficiency of data processing and integration, and it greatly increases the proportion of valid data. It provides supports for efficient log auditing and fault diagnosis in the future.
Study on the Inter-Organizational Information System Adaptation Mechanism Based on Organizational Identification
Authors: Yin Ming , Liu Qi , Zheng Zhan Xing
Published: September 2013

The adaptation mechanism of inter-organizational information system based on organizational identification remains under explored questions in the area of information system. In order to overcome the inadequacy of previous research, this paper firstly seeks to elaborate on the previous literatures of inter-organizational information system adaptation and organizational identification. Then the relationship between organizational identification and inter-organizational information system adaptation is analyzed. Finally, emphasis is placed on the theory model and hypothesises of inter-organizational information system adaptation based on organizational identification.
Innovative Design of New Type of Mobility Scooter
Authors: Shi Yao Jun , Wu Nai Qun
Published: September 2013

With the rapid development of economic and cultural , many cities have built their new areas, the citiesbecom larger and larger, people enjoy the high quality life brought by the rapid development of the citis, at the same time, the lager cities also make inconvenience to them. Green vehicles such as bicycle, scooter being restricted by the environment can't well meet the demand of the students on campus. Due to the air pollution caused by the traditional vehicles, new type of environment-friendly mobility scooter is imperative to keep a clean city. This article addresses a new design concept of vehicle and make innovation to the function ,styling and convenience of the new type of scooter which make people feel the happiness that brought by the new design..
A Survey of Cloud Workflow
Authors: Huang Hua , Zhang Yi Lai , Zhang Min
Published: September 2013

Traditionally, enterprises have approached IT modernization and back office process enhancement in silos, by introducing multiple vendors with different technologies, platforms and operating systems, which limits process integrity and leads to disseminated responsibilities. In contrast, the Cloud revolution has made it much easier for enterprises to approach business transformation in a holistic manner, leading to a quantum leap in their business and IT practices and performance. In other words, Cloud-based workflow (which is shorted for cloud workflow) technology is now regarded as a pretty good solution: Cloud workflow helps organizations in process harmonization, optimal organization design and change management offering benefits beyond cost reduction, it enables a complex application instance to be abstractly defined, flexibly configured and auto-operated. This paper introduces shortly the technology of both cloud computing and workflow and then presents the concepts and features of cloud workflow. Meanwhile, the following part discusses the application scenario and the application cases of cloud workflow. Lastly a possible trend of workflow in the future is proposed.
An Adaptive Topic Crawler for Electronic Public Opinion
Authors: Fan Jin , Zhang Xian Kun , Tian Xue , Liu Dong
Published: September 2013

Topic crawler is a tool for collecting electronic public opinion from the internet. The identification method of topics relevance identification directly affects the acquisition rate of topic crawler. To improve the low information acquisition rate of existing topic crawlers strategy, a modified SVM classifier algorithm which is based on online incremental learning is proposed. The idea of algorithm is to remove samples that affect the training set greatly in the historical training set, and then to re-train the historical set and the incremental set to obtain a complete training set. A framework of topic crawler is constructed on the basis of this algorithm. The results of experiments show that, this method can effectively improve the acquisition rate of the crawler.
Dedicated Interactive Electronic Technical Manual for Construction Machinery Based on PDA and SQL Server CE Database
Authors: Yang Xiao Qiang , Ma Guang Yan , Xiong Yun
Published: September 2013

Modern construction machinery is usually advanced and intelligent with complicated structure and operating principle. Therefore its fault diagnosis and maintenance are very difficult. In order to promote the maintenance capability and supply detailed as well as easy-to-use technical information, we propose the method of developing Interactive Electronic Technique Manual (IETM) based on PDA. The framework of the technical manual and key implementation techniques are addressed. The technical manual is developed with Visual Studio .Net 2008, along with the XML-based data access method on PDA. The IETM system of a type of construction machinery is accomplished. The practical results show that it can overcome the inconveniences of paper manuals, and navigate users through extensive amounts of information quickly and easily. It greatly improves the maintenance and support capability of the Engineering Corps.
Model Construction and Degree Distribution of Industrial Cluster Complex Network
Authors: Wang Li Jun , Wen Lei
Published: September 2013

Industrial cluster is a complex network composed of different enterprises in the industry chain. Based on BA and LC network, this paper designs a cluster complex network model, and analyzes its distribution characteristics. The result shows that the industrial cluster network degree obeys power-law distribution, while the size of the industrial clusters initial node can influence the degree distribution.
Research on P2P Resources Search Algorithm Based on Cloud Computing
Authors: Ge Jun Wei , Wang Yan Feng , Fang Yi Qiu
Published: September 2013

This paper puts forward a model combined cloud computing and P2P, and then achieves chord resource search algorithm in the model. Because chord algorithm one hand, does not consider the problem of node heterogeneity, on the other hand, its routing table has large redundant information. So chord algorithm is improved from the two areas, and last MRC-chord is proposed. The algorithm first defines that the nodes of the same geographical form a ring, and in each ring, the node with strongest overall performance is selected to be super cloud node, all of the super cloud nodes form the master ring , then improves routing table. Experimental results show that: the improved algorithm can reduce average routing hops and average network delay effectively, so improves the efficiency of resource search.
Research and Development of Gas and Pipeline Technical Standard Content Reveal Technology and System
Authors: Liu Bing , Wang Min Yang , Pan Teng , Wu Kai Xuan
Published: September 2013

Traditional standard retrieval methods and systems presented in various papers are widely used based on the standard titles and the keywords. However, these methods may be inapposite to modern pipeline engineers, especially for the ones who want find the requirements details of pipeline standards as fast as possible. In recent years, a number of projects have been funded to develop a Gas and Pipeline Standard Content Reveals System in PetroChina. This paper covers the development process of the system. The development of Gas and Pipeline Standard Content Reveals System involves ontology knowledge, technical details picking up and reveals system, and the process is as follows. Firstly, standard retrieval methods are reviewed. Then pipeline ontology knowledge is built as standardization objects. So the gas and pipeline standard content reveals system can be designed and developed with powerful database. It is believed that the approach to show the standard content presented in this paper may lay the initial basis for the important assist system for pipelines engineers.
Research on the Intrusion Tolerant System Based on IPv6
Authors: Wu Yu Shan
Published: September 2013

with the rapid development of information technology especially Ipv6, people become more and more dependent on internet and some related applications. yet some security intrusion vary from minor mischief for pleasure, denial of service, and criminal intent for stealing or destroying still threat the security of information system which provides service online. Traditional researches on intrusion tolerant mainly focus on Ipv4, which cannot satisfy the requirement of Ipv6. Regarding this problem, the architecture of intrusion tolerant system based on Ipv6 is designed and some critical modules are improved accordingly, the workflow of the system is described in detail. The validity of the system is proven by the result of simulation experiment.
The Application and Research of Digital Watermarking Technology
Authors: Wu Yu Shan
Published: September 2013

In this paper, we aim to the digital watermarking technology comprehensively and basic framework of digital watermarking system. Also, attack technology on watermarking systems and performance indicators are discussed. By analysis, we proposed mage digital watermarking algorithm based on integer wavelet transform and give some advantages of this algorithm in applications of digital watermarking technology.
Structural Topology Optimization with Dynamic Response Based on Independent Continuous Mapping Method
Authors: Ye Hong Ling , Li Yao Ming , Zhang Yan Ming , Sui Yun Kang
Published: September 2013

This paper refer to weight as objective and subject to multiple response amplitude of the harmonic excitation. The ICM method is employed for solving the topology optimization problem and dual sequence quadratic programming (DSQP) is effective to solve the algorithm. A numerical example was presented and demonstrated the validity and effectiveness of the ICM method.
Multitask Similarity Cluster
Authors: Li Zhen Xing , Li Wei Hua
Published: September 2013

Single task learning is widely used training in artificial neural network. Before, people usually see other tasks as noise in same learning machine. However, multitask learning, proposed by Rich Caruana, sees simultaneously training several correlated tasks is helpful to improve single tasks performance. In this paper, we propose a new neural network multitask similarity cluster. Combined with hellinger distance, multitask similarity cluster can estimate distances among clusters more accurate. Experimental results show multitask learning is helpful to improve performance of single task and multitask similarity cluster can get satisfactory result.
ZigBee Hybrid Routing Optimization Algorithm Based on Energy Balance
Authors: Wang Yang , Qian Zhi Hong , Feng Lin Han , Guo Yu Qi
Published: September 2013

Aiming at energy consumption problem in the ZBR hybrid routing algorithm, an improved algorithm (W-ZBR) based on ZBR routing protocol is proposed to reduce the network energy consumption. The algorithm was improved mainly from the following parts: Cluster-tree routing algorithm and AODVjr routing algorithm. In Cluster-tree routing algorithm the redundant packet of RREQ is limited to reduce energy consumption by setting the parent node id. In AODVjr routing algorithm the network energy consumption is balanced by monitoring the remaining energy of nodes. The simulation result indicated that W-ZBR performs better than ZBR in remaining energy ratio, routing overhead ratio, available node ratio and packet delivery ratio. The algorithm can also prolong the life span of network.
A New Dynamic Protocol Analysis Model
Authors: Li Fu Lin , Yang Jie , Zhou Hong Wei , Liu Ying
Published: September 2013

Traditional static analysis methods such as formal validation and theorem proving were used to analyze protocols security previously. These methods can not measure and evaluate actual security of protocols accurately for the setting and suppose are far from the actual conditions. This paper proposes a new dynamic protocol analysis model. The system based on the model can be used to active test in actual running conditions, analyze known protocols security, integrity, robustness, and analyze unknown protocols online, provide support for protocol designer. The systems structure, working flow and implementation of key modules are described. The experimental results validate the validity of the models design.
Error Compensation Method for Temperature Control in Trace Water Analyzer Calibration Device
Authors: Zhong Bing Xiang , Yang Jun Ling
Published: September 2013

in this paper, false nearest adjacent points method will be used for error compensation of heating furnace in device for standard gas with trace water preparation. In different temperature difference between environment and heating furnace, phase space of nonlinear time series for temperature will be reconstructed, which can improve the sensitivity of the input data for NN and simplify the measurement model. Then nonlinear regression will be completed by RBF NN. So the temperature measurement model of heating furnace will be obtained. Experiment proves that the measurement error in this method is reduced greatly, also the influence of environment temperature is reduced. By the contrast experiment, the good performance of the FNN-RBFNN is verified.
Fuzzy PID Control of Materials Testing Machine Electrical Hydraulic Servo System
Authors: Liu Xiu Juan , Liu Yan Chun , Yang Yue Ming , Zhao Kai , Zhu Yi
Published: September 2013

Material experiment system of hydraulic servo system is subject to load disturbance and load disturbance is a function of standard mechanical parameters of rock samples. Rock mass is very discrete, anisotropy, composition is not single and inelastic[. Traditional tester can't get the complete stress-strain curve of rock[ material, in order to solve the shortage of the traditional hydraulic servo system, in this paper, the fuzzy PID control is successfully applied to the hydraulic servo system, through the experiments and get good effect.
Keyboard Quality Automated Inspection Based on Machine Vision
Authors: Gao Yue Hua , Luo Bing
Published: September 2013

Because traditional keyboard quality manual inspection is inefficient and low reliability for subjectivity, machine vision based automated inspection system was developed. Keyboards fine difference in position and rotation angles existing in captured images influenced image matching. Hough transform was applied to detect the edges of keyboards for their image calibration. Many small image templates for each key and a global template for entire keyboard were set up for automated inspecting character printing quality with moderate difference sufferance. Two CCD cameras were used for image capturing to deal with keyboard big area and software was developed on HexSight Image Kit. Experimental results showed that keyboard quality can be effectively inspected with better performance.
UAV Active SLAM Trajectory Programming Based on Optimal Control
Authors: Yang Zeng Xiang , Jin Sai
Published: September 2013

To decrease the uncertainty of simultaneous localization and mapping of UAV, and at the same time, to increase the speed of searching the unknown environment at which UAV locates, an active SLAM trajectory programming algorithm is proposed based on optimal control. Therefore, UAV SLAM is tackled as a combined optimization problem, considering the precision of UAV location and mapping integrity. Based on the simplified UAV plane motion model, this algorithm is simulated and tested by comparing with the random SLAM algorithm. Simulation results show that this algorithm is effective.
Serial Communication Design of Industrial Control System Based on Visual Basic6.0 and MX Software Package
Authors: Sun Xiao Hua , Yan Li , Zhang Zhi Yong , Wang Fu Shun
Published: September 2013

By analyzing the current serial communication design used in a popular monitor system composed of PC, GOT and PLC, introduced a new design and implementation plan of serial communication based on Vb and MX software pagekage. This system could solve the problem of managing complex communication protocol in current application, and achieved the efficient, stable and reliable communication under simple attachment. The system could not only have not to consider complex communication protocol but also need not to set up the D8120 PLC, and MX Component with other application such as GX Developer could use com port at the same time, so debug conveniently and programming high efficiency. In the actual application, No matter the accuracy and stability of communication were to achieve achieve industrial control system requirements.
Control of the Pulse Width in a Laser-Diode-Pumped Passively Q-Switched ND:YVO4 Laser
Authors: Zhang Zhong Shi , Wang Jing
Published: September 2013

By using laser-diode as pumping source, a passively Q-switched Nd:YVO4laser with Cr4+:YAG saturable absorber is realized. Considering the Gaussian distribution of the pump beam and the oscillating laser intensity, the coupled rate equations of a LD-pumped passively Q-switched laser with Cr4+:YAG saturable absorber are given. The relations between the pulse width and the pump beam radius in the gain medium as well as the laser beam radius in the saturabe absorber are obtained from the numerical solutions of rate equations, and the theoretical calculations agree with the experimental results.
Tuning of Ship Heading Controller Based on Minimum Rate of Energy Dissipation and Multi-Attribute Decision Making Method
Authors: Tang Zheng Mao , Xie De
Published: September 2013

The PID control is most widely used in industry and its parameters setting is an important issue in the field of automatic control. In this paper, a novel tuning strategy based on multi-objective genetic algorithm (MOGA) and multi-attribute decision-making (MADM) method was proposed. The proposed strategy can balance the four performances simultaneously regarding accurate set-point tracking, disturbance attenuation, robust stability and energy consumption for actuator. The estimated Pareto-optimal set was obtained by MOGA and then an appropriate solution was selected from the set by ranking with a simple additive weighting method (SAW). To demonstrate the proposed strategy, an example of the ship course PID controller with filter for a 150,000-ton tanker with steering gear was studied. The results show that the PID controller is stable and robust with high dynamic quality.
Media Access Control Protocol in Ad Hoc Network Based on Hybrid Antennas
Authors: Cheng Ming Ce , Li Ying
Published: September 2013

In order to solve the problem of the communication asymmetry problems in hybrid ad hoc network because of the introduction of directional antennas, we propose a hybrid MAC protocol termed DFMAC protocol, which achieving data transmission by one hop through the use of exchange RTS by multiple hops. The protocol takes the benefit of directional antennas and can be used by node equipped with Omni-directional antennas, simulation results show that the DFMAC protocol performs well in improving the network throughput.
Study on Normalizing Process for 100mm E40 Heavy Plate
Authors: Xu Xiang Yu , Wang Xue Min
Published: September 2013

The influence of chemical composition, heat treatment process and microstructure on the properties of E40 heavy plate have been studied. After normalization process of thick TMCP plate for high strength hull steel, the structure is substantially more regular, but the strength decreases. The former microstructure consists of lath-like bainite, but after heat treatment it consists of ferrite and pearlite. The mechanical properties meet the requirement of GB 712 prescript. With cooling rate decreasing, grain size in normalizing samples increases gradually, and the strength decreases. With the holding time extending, grain growth is not obvious, and the strength decreases. The best normalizing temperature is 910 °C, and the best holding time is about100 min.
Energy-Saving Control System for AC Motors
Authors: Liang Guo Zhuang , Zhang Meng , Jiang Shan Shan
Published: September 2013

When AC motor is operated in the light load or no-load, the power factor of AC motor is relatively low, so frequency converter is adapted to motor for energy-saving control, and the system increase the tracking function of the load on the basis of all the features of the conventional inverter. And it is able to real-time monitor to load changes of the motor through the microcontroller, online adjust the input power of the motor, so that the motor output power to match load, ensure that the energy consumption of the motor is reduced to a minimum extent in the entire load range.
Design of Aquatic Product Traceability System Based on Anti-Collision RFID Techniques
Authors: Hua Xu Feng , Wang Wen Qing , Tian Yun Chen , Xing Ke Zhi
Published: September 2013

The traceability management system of aquatic product is based on RFID techniques which could obtain the function of aquatic products statistics and water quality monitoring automatically. The system frame, hardware and software design of micro-controller and anti-collision algorithm are issued in this paper. The identifying of aquatic product and water quality monitoring information are delivered to the management system and the speed of reading operation is increased greatly.
Time-SEP Comprehensive Assessment of Methods for Calculating Positioning Accuracy of Navigation Systems
Authors: Jiang Rui , Wang Yan Yong , Yang Gong Liu , Wang Yong Miao
Published: September 2013

Based on 2 statistical testing schemes, the accuracy evaluation method of Time-SEP was proposed; 3 sphere error probability (SEP) methods were derivate and concluded. Simulation and experimental verification show that: Time-SEP method for navigation equipment positioning accuracy can give a relatively comprehensive evaluation; the scheme is feasible, compatible with the traditional calculation method of parameters and can fully utilize the single test data, test validation simple. 3 algorithms can all be used to calculate SEP, the maximum relative error is less than 5%; the χ2 distribution approximation somewhat conservative is recommended; and MLE values can be used as the initial value of integral operation, to reduce the number of integral operation, access to the true value rapidly.
A Modified Q Parameter Scheme Based on BIBD in RFID
Authors: Cui Ying Hua , Yang Shu Hui
Published: September 2013

Radio Frequency Identification is an Automatic Identification Technology. RFID system typically consists of a reader and a number of tags. When more than one tag send signal to reader at the same time, reader will not identify any one. This is called collision. The information of collision is regarded as uselessness in the conventional algorithms. But in fact, useful information can be extracted from the collision and the reading efficiency can be improved. In this paper, tags use BIBD(16,4,1) blocks instead of RN16, the reader analyses the collision information based on the characteristics of BIBD and makes valid recognition even when more than one tag have been detected in same time slot. The theoretical and simulation results show that the proposed algorithm can improve the reading efficiency by 100% than that of the conventional Q algorithm. Furthermore, the proposed scheme changes little to the existing standard, easy to implement and compatible for EPC Global Code.
Research on Service Scenario and Service Requirements for Electronic Health Monitoring
Authors: Xie Bing , Chen Guang Quan , Zhang Feng Quan , Jia Xue Qin
Published: September 2013

This paper presents service scenario, classification and service requirement of Electronic health monitoring (EHM), which are very important for standardization.
The Detection Methods of Non-Level Road Based on OPCODE
Authors: Duan Chun Guang , Pang Shu Yi , Guan Hsin
Published: September 2013

The research of vehicle dynamics performance on the flat road has been more perfect at present. Around the world ,for lack of simulation environment, the analysis of vehicle driving and handling performance on non-level road is on an explorative stage. The paper established tire road detection model by using of open source code OPCODE. The ray given off from the wheel center intersects with the road model, and obtains the precise contact point and the road normal vector. Then wrote computer program based on the established detection model and embedded it into the complex vehicle model to simulate on longitudinal and lateral slope road. The simulation results show that: each detection time reach microsecond level and in the 1ms vehicle dynamics calculation step, road detection model meet the real-time simulation, and also the detection accuracy satisfy the requirements of the whole vehicle simulation.
Design of Remote Monitoring System Based on Configuration Software
Authors: Xiao Qian Hu , Weng Shao Jie
Published: September 2013

The previous measuring methods have the disadvantages of big workload, inaccuracy, high expenses and so on. A set of remote monitoring system that monitors soil moisture is developed by configuration software. This system makes online monitoring soil moisture, dynamic display of real-time data, historical data query and remote access come true. The test results in Haikou show that the system not only meets the requirements of monitoring soil moisture, but also is featured with good stability, accurate data and data sharing. It can be applied in many fields when changing the necessary sensors. The system is scalable and low-cost.
Research of Colliding Ground Vibration in Blasting Demolition
Authors: Xu Ze Pei , Li Xi Bing
Published: September 2013

Colliding ground vibration wave consists of compressional wave, shear wave and surface wave, and it spreads by the attenuation through the different rock or soil. Comparing from the frequency and duration to the blasting vibration, with the engineering example, the analysis on the characteristics of colliding ground vibration has made. It is the conclusion that its vibration frequency is close to the building, and the vertical vibration is greater than horizontal vibration, and frequency bandwidth decreases along the distance, while the duration increases.
Integrating Thermal Convection Non-Floating Type Inclinometer and RFID Tag
Authors: Lin Jium Ming , Lin Cheng Hung
Published: September 2013

This research proposes a novel wireless RFID-based thermal convection type inclinometer design. Five new ideas are presented. The first one is to make the device on a flexible substrate, thus it can save more energy than the traditional silicon. The second one is to integrate both an inclinometer and a wireless RFID antenna on the same substrate, such that it is very convenient for usage. The third and the fourth ideas are to fill xenon gas in the chamber with hemi-cylindrical shape instead of the previous one with carbon dioxide and rectangular shape. Because the xenon gas would not produce oxidization effect to the heater, and it is more reliable. Besides, the xenon gas can increase the gas molecular weight and the device sensitivity. The fifth idea is to use non-floating structure instead of the floating one with a cavity in the substrate. Moreover, to increase the sensitivity the thermisters were stacked on one material such as alumina nitride. Note that the sensitivity curves by applying the non-floating structure with stacking material are more linear. Three kinds of stacking height were studied, such as 1, 1.5 and 2mm. One can see the combinations of AlN/Xenon are always better. If the largest sensitivity is the key consideration, then H2=1.5mm is the best choice (0.4°C/Degree), but the linear operating range is 45°. However, If the largest linear operating range is the requirement, then H2=2mm is the best one (75°), but the sensitivity is 0.173°C/Degree.
Automatic Analysis of Mineral’s Abundance
Authors: Su Qing Hua , Zhao Yan , Yang Kui , Zhang Shao Chen
Published: September 2013

The mineral is the important data in the Lunar Exploration. The main objective of this work is to segmentation lunar craters with the C-V Model, and to quantify the images terrain and the abundance of lunar surface minerals based on Crater distribution law and Soil Characterization Consortium data set with Hapke model and lunar surface reflectance. Actual lunar images of mare region as an example, this method analysis result of the minerals abundance are basically same with published literature. This method can be simple rapid in-time implemented in real-time lunar exploration.
An Edge Detection Algorithm of Moving Object Based on Background Modeling and Active Contour Model
Authors: Wang Bo , Zhang Kun , Shi Liang , Zhong Hui Hui
Published: September 2013

A novel algorithm based on background modelling and active contour model is proposed for moving object edge detection. Firstly, it uses the background modeling to complete moving object detection, then it uses quad-tree decomposition method to contain the corresponding to the foreground image, through the data distribution density of the sparse matrix, calculates the seed points corresponding to the regions which are containing the moving object. Finally, starting from these seed points, it executes the active contour model in parallel to complete the multiple moving objects edge detection. Experimental results show that the proposed algorithm can effectively obtain the object outlines of multi-moving objects and the edge detection results are close to the judgment of the human visual, parallel contour extraction makes our algorithm has good real-time.
Research and Application of Online Upgrade System Based on the General ECU
Authors: Xu Yang , Yang Xi , Wang Rong Gang , Wang Zheng Shu
Published: September 2013

The paper introduced us a kind of architecture of online upgrade system to improve the compatibility of the ECU online upgrade system when it was used in different hardware platforms. In this architecture, code ware made by the idea of layered design implementation which is not relay on the hardware platform anymore. Encapsulated the function modules at the some time, provided the general interface to the upper layers, versatility and openness of the system had been improved. The method in this paper had been verified through the application of the battery management system in the electric vehicle.
Study of Dynamic Voltage Restorer Based on Repetitive Control Algorithm
Authors: Liu Tian Yu
Published: September 2013

This paper introduces a dynamic voltage restorer with independent three-phase structure, which is controlled on repetitive control strategy. Computer simulation of the whole repetitive control system is performed by Matlab/Simulink, and the results show that the effect of dynamic compensation can meet the request when voltage sags happened in electric power system.
A Survey on Solutions Dealing with Power Shaking in Distribution Network
Authors: Zhang Lei , Liu Jun , Li Yan Song , Wang Zhan Sheng , Li Chun Xiao
Published: September 2013

This paper reviewed the solutions to power shaking in distribution network from both grid side and device side. Among them, the grid-side solutions include reinforcing inspections, lighting protection and conducting accident statistics with electricity sectors. Solutions in device side are improving the ability of anti-power shaking of device itself, using dual power supply, application of UPS for important device, equipping fast switching device, application of voltage compensation device, and motor restarting after power shaking. The last part is the summary coping with power shaking in distribution network.
A Design of FPGA-Based Interpolator on Digital Integration
Authors: Yang Jun Ling , Zhang Mao Cheng
Published: September 2013

The digital integrator algorithm was used to design a fine interpolation open-loop numerical control system with the FPGA as a microprocessor to achieve a three-axis linkage. On the basis of analyzing the digital integrator interpolation principle, this paper is prepared to provide an overall program design, with the simulation being completed by VHDL language programming. As evidenced by the simulation results, the FPGA-based interpolator on digital integration can easily achieve the more complex movement, providing an effective way for the machining interpolation.
A Novel Remote Subscription Management Scheme for Embedded UICC
Authors: Chen Guang Quan , Fu Hai Jing , Xie Bing
Published: September 2013

With emerging large volumes of M2M devices, the existing Universal Integrated Circuit Card (UICC) along with its procedures and processes for managing subscriptions will no longer be a cost-efficient and conventional solution. This article describes a novel alternative based on the concept of remote subscription management scheme (RSMS). The RSMS solution meets the new market requirements generated by industries developing machine to machine (M2M) solutions. Based on international standards and mature security technologies, the proposed solution is trustworthy, cost-efficient, conventional, scalable, sustainable, and makes mobile networks a more attractive means of communication for internet of things (IoT).
Tunable Matching Network Using MEMS Switches
Authors: Guo X.L. , Huang J. , Wang Z.L. , Yin H.H. , Zhang Z.J. , Shi M. , Jiang H.
Published: September 2013

This paper presents a novel approach in order to construct low-loss reconfigurable impedance matching networks and tuners using MEMS series-contact switches and periodic defected-ground-structures (DGSs) implemented on coplanar waveguide (CPW) transmission lines. The application of DGSs results in an improved insertion loss and power handling capability compared to the conventional RF MEMS impedance tuning networks. The proposed structure consists of 12 DGSs and RF MEMS series-contact switches. The tunable matching network was fabricated on a silicon substrate and is only 1.4×̃˾̈˰̽̽˰̹̾˰̵̹̓͊˾˰̸̵̤˰̵̵̴̱̽̓͂ͅ˰̼̿̓̓˰̶̿˰̸̵̈́˰̵͇̻̾̈́̿͂˰̸̵͇̾˰̵̴̓ͅ˰̈́̿˰̸̱̳̽̈́˰̱˰́̀˰Ω˰̴̼̱̿˰̈́̿˰̅̀˰Ω˰̶͂̿m 5GHz up to 40 GHz is only 0.8 dB. The results show that the tuner can achieve a broadband impedance match for a wide variety of loads that are either purely resistive or that have a large reactance as well.
Weighted Modified Hu Moment in Human Behavior Recognition
Authors: Liang Chen Hua , Chang Qing
Published: September 2013

t has been shown that the traditional seven Hu invariant moment does not have scaling invariance with low recognition rate in human behavior recognition. In order to improve the recognition rate, a human behavior recognition method will be put forward in this paper based on weighted modified Hu moments. Firstly, the traditional seven Hu moments will be extended to ten Hu moments to get more image details. Then, the extended Hu moments will be modified to make the Hu moments has the feature of scaling invariance. Lastly, the weighted modified Hu moment will be obtained through least squares method based on minimum variance criterion. The simulation of the sequence images shows that the weighted modified Hu moment can improve the recognition rate effectively.
Development of Multichannel Data Acquisition System Based on Wheel Load Measuring Plate
Authors: Zhao Xin Tong , Lu Xiao Dong , Zhang Xi Jun , Zhang Guo Dong
Published: September 2013

The wheel load measuring plate is a force sensor based on strain measurement, it can bear simultaneously multidimensional force load and identify radial wheel load by decoupling. The measuring plate can output multichannel voltage signal, usually each channel has the properties of weak signal, strong noise, poor anti-jamming ability. The paper discusses the development of a multichannel data acquisition system for the wheel load measuring plate and conducts the experimental verification, through the data acquisition system achieve time-sharing acquisition of multichannel data, improving the precision and anti-jamming ability of wheel load measurement system.
Policy on Downlink Access of Femtocell Based on OFDMA in Dense Employment Residential Environment
Authors: Zhang Huan Le , Liu Jian
Published: September 2013

The femtocell technology has spurred much interest both in research field and industrial area. There would be a widespread employment of femtocell access points (FAPs) in residential environment in near future. However, in a typical residential buildings with two rows of apartments which have femtocell access points (FAPs) installed and a long and narrow corridor in between, the Signal to Interference Plus Noise Ratio (SINR) of macrocell signal for passengers would be degraded dramatically that practical communicaitons would be impossible. It seems that access to nearby FAPs would be the only plausible solution. However, access to the strongest pilot FAP maybe inefficient in this dense FAPs employment environment. In this thesis, comparisons between different downlink access methods for FAPs based on OFDMA in dense employment residential environment have been made and their respective data rate and outage probability have been achieved.
Galileo E5 Signal Acquisition and Tracking Based on a Wide-Band Customized Universal Peripheral N210 Platform
Authors: Guo Ning Yan , Zhao Yan , Chu Tian Xing
Published: September 2013

GNSS navigation has its own advantages which make researchers focus on how to effectively receive and process GNSS signals. This typically needs to utilize flexible specialized radio frequency front-ends, and we need to investigate novel software solutions. Due to the good performance of the Galileo E5 signal, the study of its acquisition, tracking and multipath mitigation has become increasingly significant. This paper has developed a customized 100MHz wide-band GNSS front-end. Three wide-band datasets of Galileo E5 signal were collected for case study. Final acquisition and tracking results of Galileo E5a signal successfully verified this customized RF front-end usability. It offers great potential for further studying the multi-constellation GNSS compatibility and interoperability to achieve high accuracy and continuity of GNSS navigation.
Performance Analysis of 10Gbps Optical Communication System by Simulation
Authors: Ma Yu , Liu Li Ying , Wang Xiao Fei , Yang Jiu Ru
Published: September 2013

It is difficult to study the characteristics of high speed optical communication system due to the complexity and high-cost in configuration. In this paper, aiming to overcome the weakness above, the performance of a 10Gbps optical communication system with single channel is investigated by simulation. Then, based on the outputs of RZ and NRZ codes modulated, an extensive comparison is developed in terms of spectrums, noises, eye diagrams and bit error rate.
Construction of the Iridium Phone System for Extra-Large Ore Carrier
Authors: Li Hai Feng
Published: September 2013

Focus on the working condition of extra-large ore carrier, analyze the necessary means of communication on this kind of ship, based on Iridium satellite communications advantage, builds the Iridium phone system as a complement to the communication on ship, to ensure the safe operation of ships.
VLSI Implementation of Multi-Transform for H.264 and AVS-M
Authors: Song Miao , Chen Xiao Li , Wang Ze Fang
Published: September 2013

This paper proposes a new architecture of multiple transforms for H.264/AVC and AVS-M. With the proposed architecture, H.264 4×4 inverse integer transform, H.264 4×4 Hadamard transform and AVS-M 4×4 inverse integer transform can be merged to process. Due to a new fast 1-D transform algorithm adopted by the architecture, multiple transforms can share the common resources to reduce the hardware cost. The data processing rate of the proposed architecture is 8 pixels per cycle. Under the SMIC 0.18um standard cell library, the optimum operating frequency achieves to 200MHz, and the data throughput rate achieves to 1.6G pixels per second with the hardware cost of 5461 gates. The power consumption is 3.0831mW when the global operating voltage is 1.8V. Due to its high throughput , the proposed design achieve the requirement of 3G applications obviously.
Simulation and Analysis of the Regular Mesh Performance Based on the Deployable Reflector Antenna
Authors: Zhang Dian Fu , Li Ping , Peng Yu , Hu Wei Dong
Published: September 2013

Based on three regular mesh shapes of the deployable reflector antenna,the article considers the property that the aperture section of the mesh reflecting surface does not exist, the net surface tangential electric field is continuous and the induced magnetic flux does not exist. The gain and main lobe 3dB width of particle feed reflector antenna with diffident woven structures and pore length is simulated by FEKO software.The results showed that when the hole is about 3/40 times of the wavelength, the weaving diameter is about 4/50 of the wavelength The maximum direction coefficient of the triangle weave mesh antenna is 0.3dB lower than the physical metal reflecting surface,and 0.60 higher in the main lobe width.
A Quasi-Yagi RFID Tag Antenna Design for Metallic Object Applications
Authors: Yu Yan Zhong , Wu Yong Xing , Huang Zhong Yi , Zheng Cai Qiang
Published: September 2013

A research on RFID tag antenna for attaching on metallic objects has become a popular issue. On the basis of Yagi antenna, a RFID tag antenna that is suitable for mounting on a metal ground plane is designed in this paper. It consists of a driven element (folded dipole), a reflector and five directors. The analysis of antenna performance is done by HFSS. The simulation results demonstrate that 5dBi antenna gain is achieved when it operates at the frequency of 2.45GHz.