bluuebunny/crossref_metadata_2025 huggingface dataset:
3D Object’s Pose Estimation Based on Colored Markers Information
Authors: Gao Xiang , Zhang Chong , Zhang Chun Gang , Guo Xi Juan
Published: November 2013

Pose estimation of 3d object is a hot research in the field of computer vision. This paper presents a novel pose estimation method based on colored markers. To overcome the effect of the luminance and other colors, this method uses the HSV color space and isolates the colors operating only on chromaticity plane where value (V) has no actual effect for identifying the colored regions of interest. The template is then applied on the remaining colors in order to find the center of the region. The pixels which have the same color but are not in the marker area are excluded, since they are considered noisy. The template guarantees the stability and efficiency of the extraction of the feature points. Compared with the CDT algorithm, the proposed method can extract reliable center points, and has higher accuracy in pose estimation for planar rigid objects. At last, experimental results demonstrate the efficiency of the method.
The Study on Bayesian Network-Based IETM Information Retrieval Technology
Authors: Wu Jia Ju , Pan Ze You , Xu Yong Kang , Yu Rong
Published: November 2013

IETM has been an important role in equipment integrated support. IETM works mainly through the guidance of the equipment maintenance support information retrieval. So, IETM information retrieval technology is one of the key technologies in the application of integrated equipment support. This paper proposes a new method of IETM information query based on Bayesian network model. The model supports for the IETM information of structured query. IETM information query is based features, the use the IETM dataset words, the elements and structure of unit stats information on the topology of the model structure and the conditional probability learning. Combination of the probability functions of the method and using the model of the probabilistic inference process, the relevance structured IETM information query conditions were estimated. Finally, the information retrieval process is analyzed.
An Improved Acquisition Method for High-Order BOC-Modulated Signals Based on Fractal Geometry
Authors: Wu Hua Bing , Liu Jun Liang , Zhang Yuan , Hu Yong Hui
Published: November 2013

This paper proposes an improved acquisition method for high-order binary-offset-carrier (BOC) modulated signals based on fractal geometry. We introduced the principle of our acquisition method, and outlined its framework. We increase the main peak to side peaks ratio in the BOC autocorrelation function (ACF), with a simple fractal geometry transform. The proposed scheme is applicable to both generic high-order sine-and cosine-phased BOC-modulated signals. Simulation results show that the proposed method increases output signal to noise ratio (SNR).
Parallel Niche Genetic Algorithm for UAV Fleet Stealth Coverage 3D Corridors Real-Time Planning
Authors: He Ping Chuan , Dai Shu Ling
Published: November 2013

This paper presents a parallel improved niche genetic algorithm (PINGA) for 3D stealth coverage corridors real-time planning of unmanned aerial vehicles (UAVs) operating in a threat rich environment. 3D corridor was suggested to meet the diversity kinematics constraints of UAVs. Niche genetic algorithm (NGA) was improved by merging neighborhood mutation operator and hill climbing algorithm, and performed in parallel. Additionally, the crowding strategy based on high value targets was used to generate coverage trajectories in the area of interest (AOI). Preliminary results in virtual environments show that the approach for UAVs high quality flight corridors planning is real-time and effective.
Mean-Shift Guided Particle Filter Tracking Method Based on Layered Dynamic Template Update
Authors: Li Yuan Zheng
Published: November 2013

Traditional tracking algorithm is not compatible between robustness and efficiency, under complex scenes, the stable template update strategy is not robust to target appearance changes. Therefore, the paper presents a dynamic template-update method that combined with a mean-shift guided particle filter tracking method. By incorporating the original information into the updated template, or according to the variety of each component in template to adjust the updating weights adaptively, the presented algorithm has the natural ability of anti-drift. Besides, the proposed method cope the one-step iteration of mean-shift algorithm with the particle filter, thus boost the performance of efficiency. Experimental results show the feasibility of the proposed algorithm in this paper.
A Voice Calculator Based on Speech Error Correction
Authors: Yang Yang , Zhang Hui , Wang Yong Qi
Published: November 2013

This paper presents our recent work towards the development of a voice calculator based on speech error correction and natural language processing. The calculator enhances the accuracy of speech recognition by classifying and summarizing recognition errors on numerical calculation speech recognition area, then constructing Pinyin-text-mapping library and replacement rules, and combing priority correction mechanism and memory correction mechanism of Pinyin-text-mapping. For the expression after correctly recognizing, the calculator uses recursive-descent parsing algorithm and synthesized attribute computing algorithm to calculate the final result and output the result using TTS engine. The implementation of this voice calculator makes a calculator more humane and intelligent.
Multiple Motion Segmentation of Sport Image Based on Multi-Layer Background Subtraction
Authors: Zhao Meng , Li Zhan Ping
Published: November 2013

Segmentation of motion in an image sequence is one of the most challenging problems in image processing. In image analysis engineering, accurate statistics of sport image is one of the most important subjects, while at the same time one that finds numerous applications. In this paper, we propose a robust multi-layer background subtraction technique which takes advantages of local texture features represented by local binary patterns (LBP) and photometric invariant color measurements in RGB color space. Due to the use of a simple layer-based strategy, the approach can model moving background pixels with quasiperiodic flickering as well as background scenes which may vary over time due to the addition and removal of long-time stationary objects, which plays an important role in optimizing the growth conditions of sport image. Segmentation of sport images is successfully realized by means of multi-layer background subtraction method and then the sport image is computed precisely.
Face Image Segmentation Technology Research
Authors: Hu Chang Jie , Xu Hong Li
Published: November 2013

Face contains the very rich information, which is a typical biological feature .It has a wide application prospect in personal identification, intelligent video surveillance and human-computer interaction. Face detection is to determine the number, the location, size and other information of all the faces among the color images that have been input. Firstly, skin color model is established, and then we use the skin color model to convert color image to gray image, and then we can denoise gray image, at last use the Fisher criterion to obtain the dynamic threshold segmentation of the face image, so as to lay a good foundation for the location of the face region. Through the experiment we can see, the selection of dynamic threshold, for different detecting images, obtained better color segmentation.
Information Reduction Model about Rough Set Theory
Authors: He Fei , Yang Hua Min
Published: November 2013

According to the problem that the whole data and information is always necessary, using rough set theory as a guide, making some analyses on reduction in knowledge base and information system, this paper propose a general mode structure of reduction. It shows that there are three terms in process of reduction and the most important term is definition and measure of ability.
Point-Based Monte Carto Online Planning in POMDPs
Authors: Wu Bo , Feng Yan Peng , Zheng Hong Yan
Published: November 2013

The online planning and learning in partially observable Markov decision processes are often intractable because belief states space has two curses: dimensionality and history. In order to address this problem, this paper proposes a point-based Monte Carto online planning approach in POMDPs. This approach involves performing value backup at specific reachable belief points, rather than over the entire belief simplex, to speed up computation processes. Then Monte Carlo tree search algorithm is exploited to share the value of actions across each subtree of the search tree so as to minimise the mean squared error. The experimental results show that the proposed algorithm is effective in real-time system.
The Design and Implementation of the Information Remote Monitoring and Security Management System Based on Internet
Authors: He Chun Lin
Published: November 2013

With the development of economy, the existence and application of the inflammable, explosive, toxic and harmful gases irresistible but dangerous at the same time in the industrial production application. for the sake of minimizing potential dangers, the remote security monitoring is of great significance. With the rapid development of network technology, the Internet network technology to implement the remote monitoring can effectively avoid some potential hazards in the industrial production and other dangerous things. We can draw a conclusion from the feedback that the effect of user experience is not ideal in the actual application. So based on the analysis of the traditional structure of remote monitoring system, a new remote monitoring system is created which can avoid these shortcomings through further research. This new system consists of three parts: 1. The client: using Flex rich client technology is more convenient and suitable for communication interface and let the customer feel familiar and easy to use. 2. data management layer: it contains three parts : the Web server layer, application server and database server layer . Application server promotes system real-time performance through Web Service technology, Shared memory and streaming Socket technology, which enables clients to have direct access to the site. 3. Data acquisition layer: data will be collected in a timely manner to send to data management with GPRS technology.
16-Bit A/D CAN Interface Steering Wheel Angle and Torque Acquisition System
Authors: Zhang Yun Hu , Zhang Chao
Published: November 2013

In this paper, a steering wheel angle and torque acquisition program consisted of a steering wheel angle and torque sensor, 16-bit Σ-A/D converter, SCM and CAN bus chip is described. It describes the A / D conversion, angle and torque values calculation , CAN Communication and host computer acquisition software implementation and other important processes for the method. On this basis, the steering wheel angle and torque data collection realization is finished,and it has operated in the actual vehicle environments. The results show that the system is of high precision, good stability, and it is suitable for driving behavior tests and vehicle handling and stability test.
Performance Analysis of DSR OLSR and OLSR-MIP in VANET
Authors: Zhang Cheng
Published: November 2013

Vehicle Ad Hoc network (VANET) has grown fast in recent years. The routing protocol is one of the key technologies in VANET. Due to the particularity of VANET networks, the implementation and validation of all the protocols in realistic scenes are not possible. In this paper, we use the network simulation software OPNET to simulate the network models of VANET in different urban scenarios. We assessed the performance of Dynamic Source Routing (DSR) and Optimized Link State Routing (OLSR) protocols. Then we propose a new method by deploying the roadside equipment with Mobile IP. The results show that the performance is improved compared with the existing schemes.
HLA Based Vehicular Ad-Hoc Networks Simulation
Authors: Yuan Jia Lu , Jiang Hai Lin , Wang Hua Shen
Published: November 2013

Vehicular Ad-hoc network (VANET) is a promising technology in enabling highway active safety applications such as collision warning and information broadcasting. Nowadays, VANET is extended to offer more services like vehicle tracking, WI-FI access, and Global Positioning System (GPS) services. However, there`s still serious challenges in enabling information disseminated while avoiding broadcast storm. In this paper, we develop an HLA Federation with two federates to evaluate the VANET performance with or without Road-side Unit (RSU) in the same scenarios. We use OPNET Modeler to evaluate the performance of VANET and use Paramics to set the trajectory of vehicle node in OPNET Modeler and find out the improvement of communication quality brought by RSU.
Research on the Visual Communication Design Based on Digital Multimedia
Authors: Liu Yun Ling
Published: November 2013

with the development of computer hardware and software performance improvement, digital multimedia technology has been applied to various fields, the effect of image visional transmission are mainly affected by the brightness, texture and color, and different image effects will produce different visual transmission effect. This paper starts from the brightness of the image, using the mathematical model of digital multimedia brightness change, and combined with MATLAB numerical simulation software, the digital multimedia visual effect design interface is developed. In order to verify the reliability of the design of digital multimedia solutions, image has been brightness correction in the digital multimedia visual effect interface, and then by changing the environment light, diffuse reflection and specular reflection light, we can change the effect of image digital communication. Finally, we will obtain better visual communication effect, to provide a theoretical reference for the development of digital multimedia technology.
Video Tracker Integrated Test System Design
Authors: Wang Hai Feng , Long Xu Ming , Dong Jian Teng
Published: November 2013

This paper introduces a kind of comprehensive test system, according to the characteristics of video tracker, with one ARM chip as the control core, adopts the module design to integrate information and unify management through the 1553 B bus, realize the reset, start, communications, software debugging, unit testing, and other functions of pretreatment board, management board and algorithm board, performance indicators meet the all the test requirements of video tracker after validated.
RFID Mutual Authentication Protocol Based on Chaos Key
Authors: Zhang Nan , Zhang Jian Hua , Yang Jun
Published: November 2013

While radio frequency identification (RFID) is evolving as a major technology enabler for identifying and tracking goods and assets around the world, its security issues are also increasingly exposed. A Hash-based RFID mutual authentication protocol was put forward. The key was joined into the hash algorithm, and chaos sequences were used to update the key. The protocol enhances the security of the RFID system with low cost. Experiments show that the chaos system has the character of initial value sensitivity, which can be used to distribute and update the secret key. Safety analysis show that the mutual authentication protocol can solve security issues including eavesdropping, illegal access, masquerade, spoofing attack, position tracking.
Research on Hash-Based Low-Cost RFID Security Authentication Protocol
Authors: Huo Lin , Jiang Yi Lin , Hu Liang Qing
Published: November 2013

Because RFID does not require line of sight communication, low-cost and efficient operation with these outstanding advantages RFID are being widely used, followed by privacy and security vulnerabilities and other issues. Afterdescribe and analysis the facing security issues and the existing security protocols on the stage, proposed a low-cost RFID security authentication protocol based on hash function, this protocol use hash function and random numbers to ensure the safe and efficient control access between the tags and readers,and from the perspective of quantitative estimates the cost of tag. After setting up the idealized protocol model,by using the BAN logic formal analysis this protocol , and prove the security of protocol theoretically .
PFTTH Construction Research in Shenyang
Authors: Zhu Ya Jing , Wang Ying Nan , Ren Zhe , Wan Xin
Published: November 2013

In this article, we analysis the developing situation of Power Fiber To The Home (PFTTH) in abroad. And research the construction situation of FTH in Shenyang to solve the actual problem in FTH construction. This will do a steady spade work for Integration of Three Net and National Electric Net Ltd to build strong intelligent power grid.
The Application of Computers in PACS System Regionalization
Authors: Li Xiao Hui
Published: November 2013

With the development of digital medical technology and Internet-related technology, the hospital's diagnosis and treatment become more and more inseparable from the work of modern digital imaging findings. The traditional way of medical image management services cannot meet the requirements of the new health care, so application of digital image management has become a top priority. With international and domestic regional medical information integration and sharing of system construction, imaging data center will serve as the core component of regional medical clinical information sharing system.
The Research on Synthesized Visualization Metadata Model of Molecular Structure and Gene Sequence
Authors: Zou Chen , Song Cheng Long , Wang Wen Ke , Li Si Kun
Published: November 2013

With the rise and rapid development of the systems biology, in order to explore the relationship between different levels of Bioinformatics relevance, the need of integrated visualization of biological scientific computing data at different levels is increasingly urgent. This paper propses a molecular structure and genome sequence synthesized visualization metadata model, and then implements the integration management of the visualization data of molecular structure and genome sequence. This method can effectively support the development of visualization capabilities of molecular structure and gene sequence. Based on the XML technology, by deep researching in the field of visualization data format and applying this synthesized visualization metadata model, this paper designs and introduces the conversion method for visualization data of molecular structure and genome sequence. Ultimately, based on this synthesized visualization metadata model, a synthesized visualization prototype system for molecular structure and gene sequence (VMG) has been developed.
Campus Data Storage and Backup Solution Based on SAN
Authors: Yang Liu Qing , Chen Xiang , Huang Wei Min
Published: November 2013

With the rapid growth of colleges and universities teaching affairs and resources, the amounts of data also grow rapidly. The data also requires stricter than ever on the data security and efficiency. So it has become the top priority of the School information-building department to keep the valuable data safe, reliable and integrity. This article describes the design of the campus storage and backup solutions based on the SAN, to meet the common needs of multiple applications in the files, databases, office business, to achieve the unified allocation and management of the resource sharing.
The Research on Cloud Computing Data Security Mechanism
Authors: Xu Xiao Ping , Yan Jun Hu , Liu Lan
Published: November 2013

With the application of cloud computing, in data storage, data management, and more widely, how to ensure that cloud computing data security is becoming an important research direction. This paper analyzes the cloud computing data security issues, discusses the cloud computing data security technologies, and proposes a cloud data security solution and the corresponding security mechanism.
Improve the Security of Mobile Banking Service by T Key Authentication
Authors: Fang Ze Nan , Li Yu Zhi , Zhao Cong
Published: November 2013

Combining the technologies of electronic currency and mobile communication, mobile banking services can not only make people in any time, any place handle a variety of financial services, but also greatly enriched the connotation of banking services. While people are enjoying the convenient, efficient banking services, the security issue becomes a focus of attention and a key to this business development. This paper outlines the development trend of mobile banking service, analysis its existing security measures and challenging problems, and puts forward a new solution to improve the safety of the mobile banking service. It is of significance to the development of mobile banking industry and the financial security of a country.
Application of Identity-Based Blind Signature in the Performance Evaluation
Authors: Wu Rui , Yang Shi Ping
Published: November 2013

This paper describes identity-based digital signature. On this basis, we introduce blind digital signature to propose a new identity-based blind digital signature scheme and analyze the performance between this new scheme and a previous one. Then we discuss the application of identity-based blind digital signature in the performance evaluation and design an online performance evaluation scheme.
Research on Security Solutions of Softswitch Network Based on IPSec
Authors: Mao Jiang Kun , Xu Yu Feng
Published: November 2013

This paper introduces a typical softswitch network systems, analyzes security threats that may exist of softswitch network. For these security issues, we propose a solution that can operate with IPSec system as the core on the basis of the existing softswitch network. Which will helpfully solve the illegal terminal access, network attacks, virus threats and other security issues and enhance the security of softswitch network.
A New Remote User Authentication Scheme on Three Dimensions
Authors: Wu Wei Chen
Published: November 2013

The authors present a new remote user authentication scheme on three dimensions for multi-server environments. The merits include: the scheme can be used in multi-server environments; the system does not need to maintain any verification table; the users who have registered with various servers do not need to remember different login passwords for each; the ability to choose passwords freely and change them offline; mutual authentication is provided between the user and the remote system; a session key agreed by the user and the remote system is generated in every session. Furthermore, we propose a specific Access Right (AR). The AR means the legal users have different level of authorization based on which server in the multi-server environment in used.
Evaluation on Students' Japanese Ability for Japan-Oriented Software Outsourcing
Authors: Jiang Yun , He Lei , Zheng Li Juan
Published: November 2013

With the rapid development of Japan-oriented Software Outsourcing, software professionals demand increase sharply, Japanese ability is the basis for software professionals qualified software outsourcing, the evaluation for the Japanese Language Proficiency of students with software outsourcing has great significance to promote China's software outsourcing development. This paper, researches with rough soft sets theory. First, through investigation and comprehensive analysis and combined the previous studies results to establish evaluation index system; Second, researches the maths models constructed by 6 definition, including: rough soft sets, contrast matrix, up-down row sum, up-down column sum, up-down scores and quality sorting; Finally, according the evaluation steps, evaluate the Japanese ability of nine Japan-oriented Software Outsourcing students, and obtains the sort result. The results show that rough soft sets theory considers various factors and objectively reflects the actual situation, the evaluation results are accurate and reasonable, simple and feasible, is a scientific method.
The Pesticide Information Query System Based on Android Platform
Authors: Zhang Xiu Hong , Lin Yong , Jiang Lei , Chen Qiu Chang
Published: November 2013

The paper introduces the correlation technique and implementation method of pesticide information query system which is using the Android cell phone to realize prevention and treatment of tropical crop diseases and insects. It mainly involves techniques such as Android technology, Java technology, Http communication protocol, JDBC database connection and operation, SQL language, etc. Peasant users would convenient and easy to query crop pest prevention and control method with cell phone, and get pesticide scientific knowledge in crops, to guide the use of pesticides safely
Framework Structure Design on College English Assisted Instruction System
Authors: Li Rui
Published: November 2013

Faculty shortage of college English teaching which is caused by the reform, limit the improvements of students English proficiency, and an effective mechanism to resolve this contradiction is the English assisted instruction system. This paper makes research on the frame structure, aiming at the problems in the process of system development and maintenance. First, study the functional framework composed by three roles, students, teachers, administrators, based on the analysis of system function; Then, research framework, on the presentation layer, business logic layer, data access layer, so it is easy for developers to complete the business process specific in the framework; Finally, research on security framework composed by ASP.NET, IIS, .NET Framework, the operating system. College English assisted instruction system, based on the construction of the framework structure, can achieve the ability of sharing teaching resources, enriching teaching mode, and improving the quality of teaching.
The Development of Real Navigation View Based on Unity3D
Authors: Chen Ning , Gong Su Bin
Published: November 2013

In order to simulate the floating effect of the ship in water and the real-time changing weather in ocean scene, as well as to solve the collision detection during the sailing, it well solved those problems and completed the development of more realistic navigation view system through analyzing the stress distribution of the displacement ship in water, researching the collision detection, combining the special components of Unity3D and the weather plug-in UniStorm1.6, programming the corresponding Shader,C# and JavaScript scripts based on the theory of generating ocean scene with the FFT and Projected Grid methods.
Comparative Study of 3D Model Transmission Strategies over Unreliable Network
Authors: Liu Hao Ran , Huang Yan
Published: November 2013

Three-dimensional models are being used in more and more applications. Although the ever increasing computing power of personal computers has been providing strong support to these applications, unreliable network is still a restricting factor, especially for mobile applications. As such, we in this work study several different broad strategies for 3D model transmission over unreliable network and comparatively analyze the advantages and disadvantages of each strategy. On one hand, this comparative study can guide the selection of an appropriate strategy for concrete applications; on the other, it provides a starting point for deeper investigation in robust and efficient 3D mesh transmission over unreliable network.
A Research on Development of Drupal-Based Topic Service Website
Authors: Ling Shi Jia , Lan Ban Ru
Published: November 2013

In the network environment, special service website is an effective way to carry out special services. Currently there are many problems in special topic service website construction: the style is not uniform, the database is not compatible, technical architectures have serious differences, and rights management is confusing. All of the issues mentioned above lead to a great waste of hardware, software, human and financial resources. This article puts forward the Drupal-based rapid website establishment solution which can effectively improves the construction and management efficiency of special topic service website and increases compatibility between different topic service sites, while greatly reducing the cost of topic services.
Ground Based 360° Three-Dimensional Display of the Computer Model
Authors: Xing Shu Jun , Yu Xun Bo , Zhao Tian Qi , Sang Xin Zhu , Cai Yuan Fa , Chen Duo , Chen Zhi Dong , Dou Wen Hua
Published: November 2013

Most technologies provide three-dimensional (3D) display in the front of screens which are in parallel with the walls, and the sense of immersion is decreased. To get the right ground based 3D imaging, cameras imaging planes should be parallel to the public focus plane, and the cameras optical axes should be shifted to the center of the public focus plane in both vertical and horizontal directions. Virtual cameras are used to display 3D model in computer system. The virtual capturing methods for ground based 3D display are presented. The position of virtual camera is determined by the observers eye positions in the real world. An experimental system for ground based 360°3D display is demonstrated for viewing horizontally, which provides high-immersion 3D visualization. The displayed 3D scenes are compared with the real measurement in the real world.
Physical Display of E-Commerce Site Based on Multimedia Virtual Computing
Authors: Huang Yi Ying , Li Qiang
Published: November 2013

With the popularity and development of the network, page layout and style become increasingly complex. The traditional web production technology has been unable to meet the needs of large e-commerce sites, so multimedia-based virtual web authoring technology become the mainstream of web design. This paper first analyzes the particularity of e-commerce web design and introduces key technologies of multimedia virtual. Then a well-established development process, namely content analysis, structural design, program design, performance design, is used to design the e-commerce website. Finally, the development process is well verified in practice.
Design of the Distributed Battery Manage System Based on CAN Bus
Authors: Nan Jin Rui , Ning Da Diao , Lin Cheng , Sun Can
Published: November 2013

Battery package and battery manage system of eletric vehicle need ata recording, data analysis and experimental process control. In this article an industrial battery manage system based on CAN bus was describe. The topology of CAN contains an upper machine developed in LabVIEW, a main control board and eight acquisition boards. CAN bus makes it convenient to build a distributed system and achieve real-time and reliable communication.
Multilayer Fabric Loom Electronic Let-off System Control Part Hardware Development and Design
Authors: Hu Shuang Hu , Yang Jian Cheng , Jiang Xiu Ming , Li Jing Jing , Wang Hua Qing , Yang Kai , Qin Jian Feng , Bai Yu
Published: November 2013

Electronic delivery system is an important part of the textile process, The control performance of the fit and unfit quality directly affect the quality of the loom weaving. The traditional electronic let-off system is often single shaft control the rotation of the beam. This paper studies the multiaxial let-off system, Implementation of carbon fiber braided Angle of multilayer structure. In the system hardware design, servo system by ac servo motor convert electrical signal into mechanical displacement; TMS320LF2407 let off part of the control system is chosen to realize the electronic let-off system of this project, Mainly includes the controller chip TMS320LF2407 and the outside of the extension module, Its specific data including master control module, power supply and reset, (tension) information acquisition module, servo driver, serial communication module, the starting circuit, etc.
Study of Vehicle Sideslip Angle Real-Time Estimation Method
Authors: Fan Xiao Bin , Deng Pan
Published: November 2013

In the vehicle stability control and other active safety systems, vehicle sideslip angle real-time estimation is necessary. However, the direct measurement of sideslip angle is more difficult or too costly, so it is often used in estimating methods. The vehicle sideslip angle of closed-loop Luenberger observer and Kalman observer were constructed based on two degrees of freedom bicycle model, as well as the direct integration method for large sideslip angle conditions. The comparative study showed that Kalman filtering estimation method and Luenberger estimation methods have better estimation accuracy in small slip angle range.
Research of On-Line Monitoring Technology of Machining Accuracy of CNC Machine Tools
Authors: Shi Rong Bo , Guo Zhi Ping , Song Zhi Yong
Published: November 2013

This paper analyzes CNC machine tools machining error sources, put forward a kind of on-line monitoring technology of CNC machine tools machining accuracy based on online neural network. Through the establishment of CNC machine tools condition monitoring platform, collection sensor signal of the key components of CNC machine tools, using time domain and frequency domain method of the original signal processing, extract the characteristic related to machining accuracy change, input to the neural network, identification the changes of machining accuracy. The experimental results show that, the on-line monitoring technology based on neural network, can identify the changes of machining accuracy.
VR-Based Remote Control System Design for Shearer
Authors: Zhang Xu Hui , Liu Hai Tao , Ma Hong Wei , Wu Hai Yan , Zhao You Jun , Mao Qin Hua
Published: November 2013

Aimed at the problems existed in remote monitoring system of shearer, this paper put forward a new remote control strategy of shearer based on virtual reality (VR) to achieve control visualization and automation of equipment in coal face. Firstly, after analysed the control demands of shearer in the automatic coal face, an overall scheme of coal mining machine virtual control system was put forward, its working principle and main composition were introduced also. Secondly, the methods and procedures for VR-based remote control system for shearer using Quest3D, such as virtual control platform, logic control, data transmission and communication were described. Finally, the experiments were carried out to validate and evaluate those technologies. The experimental result show that the VR techniques were the effective and efficient way to carry out remote control of mining equipment and to improve safety and reliability of production in coal mine.
Research on Double Closed-Loop DC Speed-Regulation System Based on Improved Particle Swarm Optimization
Authors: Song Le Peng , Qi Han
Published: November 2013

For the defects of the parameter tuning and optimization of the PID controller uses an improved Particle Swarm Optimization (IPSO) algorithm to apply on the dual closedloop DC speed tuning system and adjust PID controller parameters online. The optimization result of adopting step response of the improved PSO algorithm is analyzed. It shows that using the improved PSO algorithm will obtain better dynamic performance, follow faster and more robustness than the traditional engineering design method. It provides a good performance of practical method for PID parameters optimization.
Beer Fermentation Temperature Control Curve Optimization Based on the Fuzzy - Neural Network PID Control Algorithm
Authors: Xu Xian Qiu
Published: November 2013

An auto-control model is presented to the process of beer fermentation, which has the characteristics such as time-varying, inertia, time-delay and nonlinear. The traditional PID control is difficult to accurately control. This paper according to the beer fermentation of problems puts forward a new control algorithm: fuzzy-neural network PID control algorithm. The fuzzy logistic differential control and intelligent integral control were supplemented into the fuzzy set-point weight tuning, so that the insufficiency of original PID control method was effectively improved. The advantages of this control algorithm are not only constitute a simple, small static error, dynamic response speed but also the ability to learn, etc. Therefore it not only can strengthen robust and intelligence of the system, but also make design simple and easily be required.
Error Source Identification of Machining Accuracy of Five-Axis Linkage CNC Machine Tools
Authors: Guo Zhi Ping , Song Zhi Yong , Shi Rong Bo
Published: November 2013

The error sources of machining accuracy of CNC machine tools including geometric error, thermal error, system error and error of load control etc. The error source affect the relative position of the cutting tool and the workpiece by the dynamic motion, and then affect the machining accuracy of the workpiece. By trial cutting method, "S" test part is a new test part for detecting machining accuracy of five-axis linkage machine tools. Through experiment and simulation, identification of the error source of the machining accuracy and the regular of "S" test part surface errors, surface quality, results show that "S" test part can reflect the machining accuracy of CNC machine tool.
A Remote Monitoring System for Data-Center Based on GSM/GPRS Network
Authors: Sui Hui Min , Wu Qin Long , Yang Huan , Yang Gui Fu , Ma Zhi Qiang
Published: November 2013

This paper presents the remote monitoring system for data-center based on GSM/GPRS Network. The System real-time monitors the data-center room temperature through ZigBee wireless network, and gets the air conditionings and servers running status through the serial port, and achieves communication to administrator through SMS-Modem and GSM/GPRS Network. This system enables administrators can easily understand the status of the data-center room and remote control the data-center room anytime and anywhere.
Study on the Construction of Intelligent Power Distribution Area of Rural Power Grid
Authors: Zhu Ya Jing , Tian Hui Yu , Bi Ke
Published: November 2013

In most of Chinas rural areas, the devices of power distribution area are low configured, simply designed and installed, and have few functions but lots of forms. Beyond, most of them only implement simple functions of power distribution and metering. They couldnt meet the needs of transformation of rural power grid. So its extremely urgent to reconstruct and build intelligent rural power distribution and realize the standardization of information model and the intelligent integrated management of power distribution area to improve the quality and reliability of power supply. In this paper, we analyzed the current development situation of Chinas rural area. Then from the aspect of solving the lagging intelligent level of rural power system, we do some research about developing a new intelligent integrated distribution box and distribution transformer terminal , then we propose the intelligent manage system of power distribution area to realize high intelligent level of power distribution management, high level monitoring and control and greatly improved manage efficiency. At the same time, we enhanced the serving strength for the customer and help to improved the entire intelligent power load , so we could supply high quality power to our customers.
The Development and Application of Ultra-Low-Power Wireless Sensor Network Nodes
Authors: Li Zhi Ming , Chen Xiang Guang
Published: November 2013

In order to extend the life span of battery-powered wireless sensor network nodes, this article proceed from the power module, data processing module, wireless module and MAC protocols to design an ultra-low-power wireless sensor network nodes. The nodes improve the power module efficiency maximally, at the same time it utilizes the ultra-low-power data processing module and the asynchronous MAC protocol adopting a sleep wake-up mechanism. Thus it reduces the integrated energy consumption of wireless module significantly. The life span of the nodes has been increased more than three times. In a word, the design in proposed in this paper greatly cuts down the energy consumption of wireless sensor network, which has practical significance of expanding the application space and improving the application effects of wireless sensor network.
A Method for Truck Crane Reliability Test Based on Wireless Sensor Network
Authors: Fu Han , Chen Du , Ding De Wei , Wang Shu Mao
Published: November 2013

Several subjects including hoisting, derricking and slewing of boom, extending and contracting of boom, setting down and retracting of outriggers, have to be carried out in truck crane operating reliability test according to native standard. It is a laborious and time consuming work which repeats hundreds or even ten hundreds times. In this paper, a Wireless Sensor Network (WSN) based system was built to automatically count the number of each test item. To achieve counting numbers of status change of telescopic boom, extending length or hoisting height were measured by one pair of wireless ranging sensor nodes adopting Chirp Spread Spectrum technique. The status change of outriggers and boom was monitored by detecting signals from a group of hall sensors. The data were then transmitted to main software by ZigBee wireless sensor network based on star topology. The software was developed for further data processing and storage by Labwindows/CVI. Preliminary experiments that included simulation and on-the-spot test were conducted. The results show that the count is in accordance with actual number. It is helpful and practical to reduce labor intensity as well as kinds of resources investment.
Research of Insulator Contamination about Microwave Radiation Characteristic Based on the Theory of Component Emissivity
Authors: Yu Ping , Rong Chao
Published: November 2013

Under unfavorable wheather conditions, such as mist, dew and drizzle, contamination flashover may occur on polluted insulators. According to the properties of radiation, this paper proposes a new method for detecting the pollutant on insulators by the dual-channel Dicke radiometer based on the pollutants radiation characteristic and the theory of component emissivity. This study fully considered the effect that the radiation energy of multiple scattering and the external environment on antenna temperature, and it described by the structure of antenna temperature with matrix. A new dual-channel Dicke radiometer has been developed to measure the radiation characteristics of insulators. With a large number of data obtained by experiments, the relationship between ESDD/NSDD and the antenna temperature was researched. And it proposed an empirical formula to calculation ESDD and NSDD. This study provides a new method of detecting insulator contamination by microwave radiometer.
Research on Calibration Method for Small Diameter Directional Gyro Inclinometer
Authors: Kang Gui Hua
Published: November 2013

This paper introduces a new method for small diameter directional gyro inclinometer calibration with continuous measurement mode. The mathematical models referring to the relationship between the input and output of the accelerometers and the gyro are established. Experiment has been conducted for different angular speed and different positions on a three-axis turntable. We totally obtained 36 groups of experiment data of different angular speed regarding to different positions. Through the application of the established mathematical models and by means of computer aided data procession, the scale factors, installation error and static drift for the gyro inclinometer are calculated. Thus, the inclinometer calibration is implemented. It has been verified that this new calibration method enables us to quickly and effectively calibrate gyro inclinometer. The established mathematical model has been proved to be exact and effective. The whole operation is simple, quick and reliable.
Experimental Study on the Magnetic Properties of MSMA and the Function of MSMA Actuator of Reticulated Shell Structure
Authors: He Jin Sheng , Yang Tao , Wang She Liang , Weng Guang Yuan
Published: November 2013

With shape memory function of new smart material, the magnetic control properties of magnetic shape memory alloy could be used to fabricate intelligent actuators for vibration control of reticulated shell structure. The major performance parameters of the microstructure of the materials has been considered in the functional relationship between the magnetic field and strain model of traditional magnetic shape memory alloys (MSMA). But the magnetic field of MSMA do not considered, induced strain and pre-pressure, ambient temperature and other factors, which is a mutual restraint relationship and coupling. Selected Ni53Mn25Ga22, in this paper, as the material for the research on deformation under the action of temperature, magnetic field, pressure coupling effect, and according to the test data designed a MSMA actuator drive.
Research on the Behavior of Transient Voltage Suppressor as ESD Protection Device
Authors: Zhang Xi Jun , Dong Kang Ning , Yang Jie , Yang Zhe
Published: November 2013

Electrostatic discharge (ESD) is a major failure mechanism for electronic equipment, and transient voltage suppressor (TVS) is the chief means by which the susceptibility to ESD of equipment can decrease. To study the suppressing behavior of TVS to ESD, a testing system was developed, consisting of the ESD generator, the coaxial-test clamp, the 30dB pulse attenuators, current/voltage sensor,and the oscillograph, etc. Using the testing system, the voltage-current behavior of a TVS as a protection device against ESD is described. It is shown that the pulse clamping voltage and the current peak of the TVS increase with the growth of the injected test voltage, and they are linear with the testing voltage. Through comparing and analyzing, it could be concluded that, for the ESD, using the clamping voltage decided by the same response time to estimate the protection performance of TVS is reasonable.
Combined Reliability Testing Profile Model and Application for Embedded System
Authors: Wang Jin Hui , Ai Jun , Huang Lin Zhi
Published: November 2013

Embedded system is applied more and more extensively in the fields of national defense weapon equipment. With the increasing complexity of embedded systems, the combination of the hardware with software is more and closer. Because of the overall characteristic of hardware and software combination in embedded system, traditional reliability test can hardly accurately identify the reliability of embedded systems. The proposed combined reliability testing method, which combines software reliability test with system integrated environmental stress test to simulate the state of system running, provides the basis for the accurate validation and evaluation of reliability of embedded system.
Linear Boundary of Current Closed-Loop Control of Two-Quadrant H-Half Bridge Converter in Excitation System
Authors: Yi Xin Qiang , Wang Dong , Su Zhen Zhong
Published: November 2013

The excitation system is an important component element that influences the dynamic behavior of alternators. However, when the two-quadrant H-half bridge converter is used in the exciter field current closed-loop control system, there will be some problems of nonlinearity. To prevent the converter from working in the nonlinear area, the working conditions of linear and nonlinear area of H-half bridge converter is discussed firstly in this paper. And then it is verified by the simulation results.
Performance Analysis of Unslotted CSMA with Hybrid Sensing in Multi-Channel Cognitive Radio Network
Authors: Zhu Dong Bi , Wang Hui Min
Published: November 2013

We propose and analyze an unslotted CSMA with hybrid sensing in multi-channel cognitive radio network, which combines randomm-sensing and all sensing. We model the system by 3-demensional continuous time Markov process, calculate the steady state probability of the system, and obtain several performance measures such as throughput and forced termination probability of SUs. By comparing the performances of hybrid sensing, randomm-sensing and all sensing, the numerical results show that hybrid sensing scheme overcome the defect of low performance in randomm-sensing scheme.