bluuebunny/crossref_metadata_2025 huggingface dataset:
A Rule-Based Approach to Sentiment Classification of Chinese Microblogging Texts
Authors: Cheng Jia Jun , Zhang Xin , Fan Peng Yi , Li Pei , Wang Hui
Published: September 2013

Chinese microblogging texts are always short and casual, which bring some troubles to the traditional sentiment classification methods based on learning. To overcome this problem, we use a rule-based approach to classify the sentiment of Chinese microblogging texts. According to the characteristics of Chinese microblogging texts, we construct a thesaurus of subjective words for it, summarize the basic semantic rules expressing emotion and propose a rule-based approach to sentiment classification of Chinese microblogging texts. Finally, we compare our approach with a SVM-based approach. Our rule-based approach achieves an accuracy of 0.865, which is better than that of SVM-based approach.
Study and Construction of the Rock Engineering Data Exchange and Sharing Framework
Authors: Shen Zhen Ya , Xiao Jun , Wang Ying , Sui Hong Jian
Published: September 2013

Data exchange and sharing is a key issue in the current informatization of rock engineering, and its advancement is constrained by various factors, particularly distributed heterogeneous environment and the lack of uniform data exchange formats. To address this need this paper presents the Rock Engineering data Exchange and sharing Framework (REEF), which adopts service-oriented architecture (SOA) and uses the rock engineering markup language (REML) as the standard exchange language. This REEF framework covers the main functions of data exchange and sharing in its domain, which can be used as the universal solution to reduce the difficulty of the industrial integration of rock engineering, and it provides support to the standardization and digitization in the field.
Research about Rural Information Management Multi-Level Platform Based on Cloud Computing
Authors: Duan Yan E
Published: September 2013

The rural informatization refers to the widespread application and promotion of communication technology and computer technology in rural production, life and social management, and is a very important part of social informatization. Following the development of IT and advance of new socialist countryside, rural information management as the core content of rural informatization construction has the direct impact on the level of rural information service. Based on the analysis of situation and existing problem of China's rural information management, an rural information management multi-level platform based on cloud computing was provided. The theory, technology, service and deploy model and characteristic of cloud computing were discussed in detail. Combined with the characteristics of rural information data, requirement definition of this platform was analyzed. The basic concept, model of design and method of implementation of this platform was discussed in details.
Component Based Method for Usability Testing of a Website
Authors: Rahman Saeeda Sharmeen , Weng Jing Nong
Published: September 2013

This paper presents the Component-Based Software Engineering (CBSE) approach for usability testing of a web-site based on ISO 9241-11 usability guidance to achieve specified goals with effectiveness, efficiency and satisfaction. Usability testing is a technique used to evaluate a product by testing it on users. A particular type of website i.e. university web site was chosen and segmented in different components in modular forms according to the purpose of that component. Then component wise tasks as per ISO 9241-11 usability guidance were prepared to carry out the usability testing for evaluating the test web-site. After analyzing the results of component based usability testing, a proto-type version of the test web-site was designed in a limited form including all the feedback of test results. Finally, the proto-type web-site was re-evaluated for establishing the effectiveness of component based web usability method with the same tasks. The proposed component based usability testing method is expected to improve the design/content issues of web-site resulting the web-site much more user friendly, effective and less time and cost consuming.
A Detection Method for Botnet Based on Behavior Features
Authors: Li Wei Ming , Xie Song Lin , Luo Jie , Zhu Xiao Dong
Published: September 2013

How to detect Botnet has become a very important problem in security network. The existent detection methods based on network traffic and host behaviors cant handle the emergency Botnets. In this paper we present an optimized method to analyze the similarity and time period of Botnets behaviors. In the end, our method gets an effective result. Our method uses the IDS-like architecture, which develops six specific components to detect six important Botnets abnormal behaviors. And it builds correlation rules to calculate match score. Through the experiments described in the paper, we can see that our method can not only detect already known Botnets precisely, but also detect unknown Botnets to some extent. The experiments prove that our method is effective and it has some advantages compared with other methods. At last, the paper proposes the future direction and the points that need to be improved.
Application of Data Mining in the Guidance of Sports Training
Authors: Meng Fan Hui , Li Qing Li
Published: September 2013

Data mining is the techniques of finding the potential law from the data by machine learning and statistical learning .This paper focuses on a number of problems existed in the currents ports training, discusses the application principle of the data mining technology in sports training, and applies the critical neural networks for forecasting the performances of the athletes .Experimental data show that prediction of athletic performance by the use of neural network has very good approximation ability. It shows a broad application space of the use of data mining technology.
The Application of Improved Genetic Algorithms in Computer Network Reliability Optimization
Authors: Wang Li Yan , Zheng Xian Feng
Published: September 2013

To decrease network link cost is one of the most important pairs for computer network reliability optimization design. In order to make the network cost minimum, the network link medium cost, mathematics model of reliability and resolve algorithm must be considered when it is designed. In the paper, we present an improved genetic algorithm used in optimization calculation for minimizing total link cost and increasing the reliability of the network. Executive procedures of the improved algorithm are described. The simulation results show that improved genetic algorithm provides a method to resolves the network reliability optimization problem which normal approach can not resolve. By using the maneuverable algorithm, optimization process is accelerated, efficiency is increased.
Users Shopping Behavior Mining of B2C E-Commerce
Authors: Gan Ping
Published: September 2013

Rich transaction information and customer data can be recorded by the back-end database of e-commerce sites. By the application of the basket model in data mining analysis the correlation between data and predict customer loyalty. Then combined with the customer's shopping behavior, sales promotions pattern based prediction model is proposed and implemented. The research results will enable the B2C e-commerce to make the appropriate commercial promotion, and to improve the profitability of the company in the B2C mode by customer behavior, personal preferences.
BAVC: Classifying Benign Atomicity Violations via Machine Learning
Authors: Chen Qi Chang , Chen Zhan Fang , Liu Zhuang , Feng Xin , Jiang Zhen Gang , Wang Li Qiang , Ma Hong Yi , Guo Ping , Qian Hao
Published: September 2013

The reality of multi-core hardware has made concurrent programs pervasive. Unfortunately, writing correct concurrent programs is difficult. Atomicity violation, which is caused by concurrent executions unexpectedly violating the atomicity of a certain code region, is one of the most common concurrency errors. However, atomicity violation bugs are hard to find using traditional testing and debugging techniques. In this paper, we investigate an approach based on machine learning techniques (specifically decision tree and support vector machine (SVM)) for classifying the benign atomicity violations from the harmful ones. A benign atomicity violation is known not to affect the program's correctness even it happens. We formulate our problem as a supervised-learning problem and apply these two machine learning techniques to classify the atomicity violation report. Our experimental evaluation shows that the proposed method is effective in identifying the benign atomicity violation warnings.
Analysis Framework of Freemodbus
Authors: Zhang Wen Xia , Wang Yan , Li Shu Hua
Published: September 2013

Modbus is a popular network protocol in the industrial manufacturing environment. A modbus communication stack requires two layers:the modbus application protocol which defines the data model and functions and a Network layer. The FreeMODBUS provides an implementation of the modbus application protocol and supports RTU/ASCII transmission models. The paper introduces the analysis of FreeMODBUSs whole framework and the serial links implementation. According to the analysis, it is easily to realize the modbus protocol stack on the chip which FreeMODBUS hasnt realized and so quickly to finish the product design.
Auto Covariance Combined with Artificial Neural Network for Predicting Protein-Protein Interactions
Authors: Li Juan Juan , Chen Yue Hui
Published: September 2013

Proteins play biological function through the interactions in organisms. Proteins are major components of organisms, and they are of great significance. As an increasing number of high-throughput biological experiments are carried out, a large amount of biological data is produced. Bioinformatics is developed to study the relative data which turns out to be difficult to study using biological methods. The paper mainly studies how to apply the intelligent calculation methods to protein-protein interactions (PPIs) prediction. We proposed an approach, by combining auto covariance with artificial neural network classifier, to predict PPIs. Experiments show that our method performs better than related works with a 5% higher accuracy.
Design and Realization of the Evaluation of Expert Reputation in the Online Evaluation System for the Master Dissertation
Authors: Huang Lin , Wang Shu Hai , Fan Yu
Published: September 2013

Issertation comprehensively reflects the research capacity, innovation ability and literary ability of a postgraduate, and the dissertation evaluation is to give an objective and fair evaluation of the master dissertation. Hence the expert selection and the evaluation of its work are extremely important parts of the dissertation evaluation, and they affect the objectivity, fairness and the academic level of the results. In this paper, evaluation system for expert reputation based on the points system is designed. At the initial stage, an expert is evaluated by his basic information. Then after several rounds of review, the new evaluation is a comprehensive result of every review, and gradually approaches the actual situation of the expert. The system is proved to be feasible via actual case studies.
Function and Database Design of Storage Management System
Authors: Chu Jian Li , Li Hong Yan , Chen Xiao Ji
Published: September 2013

Storage management system manages and controls the storage out-warehouse activities, has a great significance for enterprises coordinate production and management and improve economic efficiency. For the difficult problems of storage management system development, in this paper, design the function and database. Function design, according to business process, design function module structure chart and describe each function module. Database design mainly includes concept structure design and logical structure design, design conceptual structure with E-R diagram for example of "commodity sales warehouse-out", design relation structure for example of "customers purchase commodity". It is necessary to develop storage management system to achieve the rational management of commodity purchase, sales and stock, the content of this paper has laid the basis of the development of storage management system.
Research on Affecting College Graduates' Employment Selection Based on AHP
Authors: Liu Li Bo
Published: September 2013

We adopted the form of questionnaire survey to interview some college graduates, got six factors that influenced graduates job choices and the importance among these six factors ,then built a model and evaluated these factors based on AHP and passed the consistency check, then concluded that such method has practical acceptability. Finally, as one of the applications of such method is presented.
Research on Improvement of LEACH Protocol with Heterogeneous Nodes
Authors: Zhang Li Cui , Wang Dan , Xu Xiao Fei
Published: September 2013

It is necessary to consider the energy efficiency of nodes and load balance in wireless sensor networks. This paper combines with the network of the actual heterogeneous nodes, the improved algorithm of LEACH is proposed, which is called LEACH-HA. The optimal number of cluster heads is derived with improved in the network which increases energy of nodes become cluster probability. A hybrid communication mode that cluster heads alternate between single hop and multi-hop mode is proposed. After analysis LEACH-HA improves the energy efficiency among nodes and expands the coverage of network.
Test Methods for Intelligent Optical Distribution Network
Authors: Guo Lin , Zhong Xiu Fang , Zhang Pei , Zhao Huai Gang
Published: September 2013

As an important part of FTTx network, ODN is facing the challenge to better management on large mount optical fibers and ports. Intelligent ODN is a promising solution with automatic deployment and management. Technical solutions are well developed, and part of its standards is in process. But the test consideration is still blank. Based on our study and real network operation experience, we firstly provide a suit of test methods on the evaluation of Intelligent ODN networks.
The Design of Artificial Climate Chamber Environment Based on CAN Bus Data Acquisition System
Authors: Liang Guo Zhuang , Zheng Bo , Zhang Ying , Ma Tao
Published: September 2013

Introduced a kind of based on CAN bus, to realization of artificial climate chamber environment data acquisition system. System adopts SJA1000, PCA82C520 as interface devices, the host through the CAN bus runs around in the culture room of all CAN nodes, each node through the installation of various sensors on plant growth environment factor for information collection and transmission. System has a good real-time performance, low running cost, easy to build, has broad application prospects.
Discovery of Invocation Model and Dynamic Test Configuration Model Based on TTCN-3 Test Systems
Authors: Liu Yong Po , Chang Chuang Ye , Liu Shuang Mei , Wu Ji
Published: September 2013

Aimed at the comprehensibility, reusability and maintainability, the thesis presents the reverse model recovery for the legacy code developed by TTCN-3. It can also help tester and maintainers to verify the test implement, etc. The thesis introduces the discovery of invocation model and dynamic test configuration model based on the reverse model discovery system framework.
Traction Force and Climbing Capacity Theoretical Analysis of Hydraulic In-Wheel Motor Drive System
Authors: Zeng Xiao Hua , He Hui , Zhou Zhen Ping , Li Sheng , Li Xiang Hua , Peng Jun , Wang Ji Xin , Song Da Feng
Published: September 2013

The objective of this paper is to introduce a newly developed Hydraulic In-wheel Motor Drive System (HIMDS) mainly made up of a variable displacement pump and two motors. The new HIMDS is primarily applied to heavy truck to improve its passing ability when encountering the low-roads. This paper Not only illustrates the structure and working principle of the system, but also gives a detailed description of calculation of the improvement in traction force and climbing capacity of the vehicle after working with HIMDS. The Simulation results show that after using the system, the vehicle traction force was increased by 23%, and the climbing capacity was improved by 30% mostly.
A Car Locator System for Indoor Parking Areas
Authors: Chen Zhi Rong , Yin Tian He , Lu Xing Jia , Yang Fan
Published: September 2013

Combining RFID and LBS technology, this paper discusses a survey conducted for developing a Car Locator system which can provide help to users to quickly find their vehicles in a large parking lot, and the system architecture and a prototype is developed from the survey results.
A Multi-Factors Identity Authentication Scheme in Classified Environment
Authors: Wang Guan , Liu Qiang , Zhou Jun , Chen Jian Zhong
Published: September 2013

Since the traditional methods of identity authentication cant attest safety from one platform to another, they cant be applied in classified environment. This paper proposes a multi-factors identity authentication scheme which is used for network storage in classified environment; the scheme installs a TCM (Trusted Cryptograph Module) chip on the client as well as authentication server, and makes full use of the features of the TCM to ensure the platform on both side and the entire process of identity authentication can be trusted.
Qos Constraints-Based Energy-Efficient Model for IP Networks
Authors: Jiang Ding De , Wang Wen Juan , Zhang Wei Han , Zhang Peng , Li Ya
Published: September 2013

This paper proposes an energy-efficient model to overcome the energy-efficient problem in large-scale IP networks, based on QoS constraints. To characterize network energy consumption, we present a link energy consumption model based on the sleep and speed scaling mechanisms. If there is no traffic on a link, let it sleep, or activate it and divide its energy consumption into base energy consumption and traffic energy consumption. And then according to the link energy consumption model, we can build our energy-efficient model to improve the network energy efficiency. Finally, simulation results show that our model can significantly improve the network energy efficiency.
A Network Coding-Based Energy-Efficient Multicast Routing in Multi-Hop Wireless Networks
Authors: Jiang Ding De , Li Ya , Zhang Wei Han , Li Wen Pan , Yao Chun Ping
Published: September 2013

In this paper, an energy-efficient multicast routing algorithm in multi-hop wireless networks is proposed aiming at new generation wireless communications. Different from the previous methods, this paper targets maximizing the energy efficiency of networks. In order to get the optimal energy efficiency to build the network multicast route, our proposed method tries to maximize the network throughput and minimize the network energy consumption by exploiting network coding and sleeping scheme. Simulation results show that the proposed algorithm has better energy efficiency and performance improvements comparing with the existing methods.
Simulation Study of Vector Control System with Speed and Flux Closed-Loop
Authors: Li Zheng Zhong , Gao Guo Fang , Guo Li Xia
Published: September 2013

Through the rotor-flux-oriented vector control equation and the decoupling control based on vector control method, this paper studied the design method of the flux regulator in the vector control system. The vector control system is design with flux division link, and gets in an ideal performance of timing in the matlab simulation.
A New Type of Sensorless Induction Motor Direct Torque Control System
Authors: Han Ya Jun , Chen Bao Fan , Yang Yong
Published: September 2013

According to motor installation mechanical sensor inconvenient problem put forward new speed identification method, from adaptive control principle and extended kalman filtering algorithm principle of the two different observer is applied to induction motor direct torque control, and analyses the research and comparison, find out their advantages and disadvantages. Using Matlab/Simulink construct the system model and the simulation, and the results show that in the load change, noise suppression, etc is better than that of EKF MARS, in the state observation, the MARS is better than that of EKF.
Design of Servo Control System for Stepper Motor Based on MCU and Infrared Remote Control
Authors: Li Xiao Fan , Li Hui Yuan
Published: September 2013

A four-phase stepper motor servo control system is designed by a master chip STC89C52 and driver chip ULN2003A. Operation in four modes of stepper motor is achieved by keys. Speed control of stepper motor is achieved by A/D conversion chip TLC1549 and adjustable potentiometer. Dynamic display circuit of digital tube is designed by a shift register 74LS164. At the same time, operating in four modes, speed control and turning its particular angle of stepper motor are achieved by the infrared receiver HS0038. The experimental result shows that the control system is reliable, and it has some practical value.
Grid-Connected of Photovoltaic Module Using Inverse Optimal Control
Authors: Zhang Guang Ru , Yang Dong Sheng , Liu Ting , Zeng Jun Yan , Xu Yu Kun
Published: September 2013

Switching converters and photovoltaic panels are nonlinear models, but existing PV inverter control methods are mostly based on the linearization control methods. The traditional linear methods are often difficult to eliminate static errors and the dynamic responses are not very satisfactory. In this paper, on the basis of nonlinear methods to control the switching converter, a mathematical model of discrete rotating coordinate system is given and an inverse optimal control method for single-phase grid-connected inverter control is proposed at the same time. This method achieved independent power control purposes due to implementing active and reactive power decomposition; and it is easier to use a microcontroller digital implementation for the discrete method. Simulation results show that this method can eliminate the static errors, and have a good dynamic response.
Design of Full-Digital Measurement and Control System on Grain Situation
Authors: Li Xiao Fan , Li Hui Yuan
Published: September 2013

A scheme for measurement and control system on grain situation is presented in this paper. This system is mainly composed of sensor network, measurement and control extension, communication host and host computer. Measurement and control extension centres on microcontroller C8051 to accomplish the measurement of grain temperature and humidity in granary. Instruction is transferred to measurement and control extension by communication host, at the same time, transferring the data measured by extension to host computer. Host computer achieves the regimentation of whole system by applying PC. Compared with traditional ones, this measurement system is much more simple, low-cost, efficient and responsive, with profoundly immediate significance and wide prospect.
Application of PLC in the Control System of Fins-Former
Authors: Zhou Biao , Jiang Hai Bing
Published: September 2013

The fins are the basic components of the plate-fin heat exchanger. And fins-former is the special device to produce heat-exchanger. In this paper, some fins-former is used as research subjects, and Mitsubishis FX2N Series 32MT high-performance small programmable controller (PLC) is chosen as the main control unit to design the control system of its nesting cutting device. Then the control program is prepared. AC servo is used in the motion control system and finally the automation and control of the nesting cutting process is realized. It provides a useful method and reference for the automation control and transform of the fins-former.
An Investigation of Heat Transfer Characteristic of Cross Internal Helical Microfin Gravity Heat Pipe with Self-Rewetting Fluid
Authors: Tian F.Z. , Xin G.M. , Hai Q. , Cheng L.
Published: September 2013

Gravity heat pipe has been widely used in many heat transfer devices due to its high thermal conductivity, low cost and sample structure. In the paper, an experimental investigation of the gravity heat pipe with cross internal helical microfin gravity with two kind of working fluid (water and butyl alcohol solution with 5% mass fraction) was presented from horizontal and vertical position. The experimental results showed that in the horizontal position, self-rewetting fluid can significant increases the GHPCIHMs drying limit, decreases the thermal resistance and improves the heat transfer performance. In the vertical position, gravity effect play main functions on fluid return, self-rewetting has not been proved to have played a positive role on the heat transfer performance.
Torque Vectoring Control for Handling Improvement of 4WD EV
Authors: Xu Xia , Xiong Lu , Feng Yuan
Published: September 2013

Exploiting the structural merit that electric motors can be controlled precisely in speed und torque, this paper investigates the use of Torque Vectoring Control (TVC) for improving handling of electric vehicles. The strategy consists of two control levels. The upper level controller layer achieves reference yaw rate tracking, by using the 2-DOF planar bicycle model with a linear tire model to calculate the desired yaw rate. Then with sliding mode control law the desired yaw moment is determined. The lower control level determines control inputs for four driving motors by means of optimum traction distribution. Simulations are carried out by using the co-simulation of vehicle dynamics software CarSim and Simulink to verify the effectiveness of this control system and the effects of parameter variations (friction coefficient and throttle).
The Research of CAN Bus in the Car Intelligent Lighting Control System
Authors: Wang Yi , He Li Ren
Published: September 2013

As one of the most important subsystem of automotive control systems, the design of automotive lighting control system is essential. In this article, the automotive intelligent headlight control system based on CAN bus was introduced, and the system hardware structure and software design processes was given. Adopted MC9S08DZ60 microcontroller which integrated the CAN controller as the master chip. While taking advantage of the photoelectric sensor to analyze road lighting conditions, according to light changes in the external environment to achieve automatic dimmer. The circuit has characteristics of simple hardware design, high reliability and real-time. And provided a theoretical basis for the Hyundai Motor intelligent control system.
Study on the Formation Control Methods for Multi-Agent Based on Geometric Characteristics
Authors: He Li Li , Lou Xiao Chun
Published: September 2013

Multi-agent formation control is the process in which the teams formed by multiple agents move to specific target or specific direction. The formation method of the linear formation and circular formation are given in this paper, based on the geometric characteristics of the formation formed by multi-agent. The process in which 5 agents arrived at the designated target point and formed a linear formation is achieved through simulation; and 4 agents formed a circular formation and cooperated to carry heavy weights. The result of the three-dimensional simulation shows the feasibility of the method to form multi-agent formations in different environments and different tasks.
An Investigation of the Operating Characteristics of Gravity Heat Pipe with Cross Internal Helical Microfin under Variable Power
Authors: Tian F.Z. , Xin G.M. , Hai Q. , Cheng L.
Published: September 2013

The gravity heat pipe is a reliable and efficient heat transport device and has been widely used in many places. By now, there have four methods to improve the gravity heat pipe performance, high efficiency working medium, internal surface treatment, inside plug-in and other categories. In the paper, an experimental investigation of the operating characteristics of the gravity heat pipe with cross internal helical microfin gravity filled with water was presented and compared with general heat pipe from horizontal and vertical position. The experimental results showed that in the horizontal position, GHPCIHM has lower evaporation section temperature and axial temperature difference, and the drying limit is 1.5 times higher than general GHP. In the vertical position, mass nucleation site, characteristic surface tension and special helical angel make GHPCIHM lower thermal resistance and higher heat transfer performance than general GHP.
A Novel Framework for Industrial Control System Malicious Code Analysis
Authors: Wang Chun Lei , Miao Qing , Fang Lan , Dai Yi Qi
Published: September 2013

industrial Control System (ICS) performs the tasks of supervisory control and data acquisition of critical infrastructures. With the widely application of computer and network techniques, ICS suffers serious security threats, and malicious codes are one of the most serious security problems. However, there is absent of analysis methods specific for ICS malicious code behaviors in current times. In this paper, a framework for ICS malicious code analysis is presented. Firstly, the ICS attack graph model is established based upon the hierarchical structure of industrial control system and the suffered security threats, which formalizes the attack process of ICS malicious code. Secondly, the runtime information of ICS malicious code is detected and collected for analyzing and assessing the attack behaviors and the resulted impacts. Finally, the ICS simulation environment for malicious code analysis is constructed based upon the framework and the experimental analysis of ICS malicious code is performed which preliminary validates the effectiveness of the proposed framework.
Study on Vibration Controller Based on Adaptive Inverse Method
Authors: Li Hao , Dong Long Lei , Zhao Wen Zhe
Published: September 2013

In this paper, study of adaptive inverse controller based on nonlinear multi-degree-of-freedom (NLMDF) algorithm has been carried out. A vibration control system with TMS320F2812 as the hardware platform has been developed, which can realize waveform reproduction and spectrum control. An improved least mean square algorithm-NLMDF has been introduced to design the filter parameters in the adaptive inverse control and simulations have been carried out in Matlab software environment. Accordance with the requirements of the adaptive inverse control method, hardware platform of the vibration control system based on dual-Digital Signal Processor (DSP) architecture, has been designed; through abstraction of the driver layer, system layer and application layer of the vibration control system , software platform has been developed. The experiment results show that functionality and performance indicators of the system have reached the design requirements.
Time Delay System Tracking Control Based on ADP Iterative Algorithm
Authors: Cui Chang Qing , Wang Yi Qiang , Yang Chun Yan , Yang Bao Sheng
Published: September 2013

Tracking control is to select a control strategy, so that the actual output of the system to be able to track the desired output trajectory, and makes minimal prescribed performance index function. Actually adjustment problem is also a special tracking problem, namely zero output trajectory tracking problem. Adaptive dynamic programming for solving delay systems tracking control aspects of the article is very small. The proposed delay systems tracking control features include two aspects: First, the research object containing the delay nonlinear discrete affine system, the second is the research method is adaptive dynamic programming iterative algorithm.
2-D Bar Code Technology Based Substation Patrol Robot’s Visual Navigation
Authors: Zhao Kun , Zhao Shu Tao , Zhang Pei , Shen Lu , Liu Ce
Published: September 2013

The development of robot technology and AI makes it possible using outdoor mobile robots inspecting substations instead of manual work [. To solve the technical problems of substation patrolrobots navigation, a general scheme of substation intelligent inspection based on the red guide line is put forward. The 2-D bar code records main inspected equipments information, aiding patrol robot positioning navigation. The system utilizing LabVIEW virtual instrument software with IMAQ Vision module has been successfully written and related to pictures image processing, detecting and reading 2-D bar code. It has practical significance to improve the efficiency and to enhance the portability and flexibility of substation inspection scheme.
Study on the Influence of Process Parameters on Curling Springback
Authors: Deng Zhao Hu , Zhang Yan Qin
Published: September 2013

When the sheet metal is curled into the pipe, springback always makes it in poor roundness. Experiments show that the process parameters can influence the springback value. So in this paper it took series of researches to find the regularity of process parameters influence the curling springback. In this paper it designed one set of curling mould, and chose the punch force, material properties, blank thickness and friction condition as the subject studied separately. After experiments it obtained the influence regularity, and then it took an analysis on the phenomenon in this paper. The results will be helpful to decrease the springback value in curling process.
Research on General Scheme for Curtain Wall Cleaning Robot
Authors: Tang De Dong , Zeng Guo Qing , Zhang Xue
Published: September 2013

The purpose of this research is to develop the cleaning robot for cleaning the glass curtain wall. The main mechanical structure, adsorption system, cleaning system and control system has been researched. With the adsorption and separation of four sucker group by turns, robot can move on the vertical curtain successfully. Four suckers of the each sucker group are arranged in circumference, so the robot can be adsorbed reliability. According to the working process analysis of the robot, PLC control system is designed. Robot general scheme designed in this paper can achieve heavy-duty work, neat movement, reliable attaching and other requests.
Research on Coal Mine Safety Wireless Monitoring System Based on Bluetooth Technology
Authors: Chen Yan Hua , Ou Jing , Ma Xuan
Published: September 2013

In order to improve the safety of coal mine production and ensure the safe working of production facilities, we propose a wireless monitoring system for coal mine safety called WMS. WMS adopts Bluetooth technology as its transmission protocol according to the coal mine environment. It is designed for collecting environmental parameters of coal mine and running status parameters of important production facilities. It transmits the collected data to the upper computer via wireless network based on Bluetooth. The upper computer receives the collected data and saves them for processing and displaying. Our research shows a new way for monitoring coal mine production and it is really efficient.
Research on Monitoring System for Factory Aquaculture
Authors: Chen Yan Hua , Ou Jing , Hou Guo Ping
Published: September 2013

This paper proposes a monitoring system for factory aquaculture, which collects data and sends them via wireless sensor network (WSN). This monitoring system consists of front-end equipment and upper computer. The front-end equipment is a wireless sensor network consisting of several sensor nodes with different functions and one coordinator node. The upper computer includes monitoring software to monitor the water quality parameters. We mainly focus on designing the solution of monitoring system, the connection circuit between RS232 and SP3232E, as well as the flow of sampling application. Experimental results show that our monitoring system can meet the basic requirements for monitoring the water quality parameters.
Research on the Summarization of the Gear Parameters
Authors: Wang Chun Xiang , Shi Hong Min
Published: September 2013

In this paper, combining with research situation at home and abroad,the gear parameters extraction methods were compared,including point cloud extraction in reverse engineering, image measurement technology and traditional measurement technique, etc. Analyzes the various technical method,At last,gear parameter extraction of the prospects for development are put forward.
A Fault Diagnosis Method Based on Combination of Neural Network and Fault Dictionary
Authors: Meng Ya Feng , Zhu Sai , Han Rong Li
Published: September 2013

Neural network and Fault dictionary are two kinds of very useful fault diagnosis method. But for large scale and complex circuits, the fault dictionary is huge, and the speed of fault searching affects the efficiency of real-time diagnosing. When the fault samples are few, it is difficulty to train the neural network, and the trained neural network can not diagnose the entire faults. In this paper, a new fault diagnosis method based on combination of neural network and fault dictionary is introduced. The fault dictionary with large scale is divided into several son fault dictionary with smaller scale, and the search index of the son dictionary is organized with the neural networks trained with the son fault dictionary. The complexity of training neural network is reduced, and this method using the neural networks ability that could accurately describe the relation between input data and corresponding goal organizes the index in a multilayer binary tree with many neural networks. Through this index, the seeking scope is reduced greatly, the searching speed is raised, and the efficiency of real-time diagnosing is improved. At last, the validity of the method is proved by the experimental results.
Analysis and Simulation of an Autonomous Integrity Monitoring Algorithm for Dual-Mode Navigation Receiver
Authors: Sun Jun , Yang Yong Gang
Published: September 2013

A dual-mode receiver combination of GPS and Compass (BD) is introduced on the assumption when only one of the satellites had a failure, how to implement a weighting RAIM monitoring. And the GPS and BD in single mode and the GPS/BD dual-mode were simulated to produce the Fault Detection Rates and RAIM integrity availability. It is demonstrated that the dual-mode RAIM algorithm is superior to any kind of single-system RAIM algorithms.
Risk Assessment of Sawing Machine Oriented to Mechanical Safety Design
Authors: Wang Qing , Chen Chao , Zhang Hai
Published: September 2013

Mechanical safety design is an important method to improve the safety of machinery. Comprehensive risk assessment for Machinery is an important part of the mechanical safety design. The risk of sawing machine is assessed based on the Basic concepts and general principles for design of mechanical safety (GB/T 157062007). Based on the results of the risk assessment, the risk factors of sawing machine are identified and appropriate safety technical measures are determined. The design requirements of the safety devices of sawing machine are analyzed. The result can effectively reduce the degree of risk of sawing machine.
An Environment Monitoring System Based on Wireless Sensor Networks
Authors: Liu Jin , Li Lian Jie , Liu Yu Xin
Published: September 2013

Based on the wireless sensor network technology, an environmental monitoring system with localization and magnetic detection capabilities is developed for unattended remote environment monitoring and control. In the system, monitoring nodes adopt the CC2420 to build a low-power, short-range jump, self-organizing wireless network, and the gateway node uses the GPRS technology to link the front monitoring network to the rear monitor center. Meanwhile, a component-based software framework is provided to facilitate the protocol implement and to improve expansibility. The experiment demonstrates that the supervisory system can realize the environmental control duty and has a good application value.
Research on the Ventilator Noise Sound Intensity Measure
Authors: Wang Rong Jie , Chen Hong Wei
Published: September 2013

Noise measurement is the important means on the noise monitoring, evaluation and control.At present the error of sound pressure method widely used is larger. It adopts the method of double microphone in the method of sound intensity measurement,and uses acoustic pressure gradient change to approximately equal the particle vibration velocity, spectrum density function is obtained by using sound intensity analyzer,it computes integral for Spectrum density function that are sound intensity.In this paper, by measuring sound intensity of ventilator and comparing the numerical results and experimental results, it confirmed that the method is high precision, has practical application value.
A Far Field Measurement System Design for Light Emitting Devices
Authors: Lin Jium Ming , Lin Cheng Hung
Published: September 2013

The key point of the proposed LED (light emitting device) optical field measurement system is to place the packaged or unpackaged LED on a stepping motor without any translation parts. Thus the mechanical aging effect and the maintenance problems of the traditional rotary part are avoided. Besides, the measurement sensors are fixed along a quarter arc of a circle with the LED at the center, so they can take both spectrum and energy output measurements along various aspect angles. The system has thirteen photo detector modules forming a 90° arch with a diameter of 63.2cm. Each module comprises eight photo-detectors, and each detector covers 0.9°. A stepping motor, placed at the center of the circle, rotates a LED under test through 360°with a step size of 1.8°. A powerful micro-controller (C8051-F020) is employed to control the 3-dimensional far field measurement flow for the data acquisition that bridges the photo-detector array modules and a personal computer. The communication between the personal computer and the data acquisition sub-system is through a RS232 interface. A fast, reliable, user-friendly measurement system has been achieved.
Combined Phase Unwrapping Method Using 2D Image Information in PMP 3D Measurement
Authors: Gao Yue Hua , Luo Bing , Sun Zhong Yu , Zhao Su Fang
Published: September 2013

In SMT solder paste deposit 3D measurement based on PMP, conventional phase unwrapping method suffered from shadow, noise and holes. Considering practical engineering condition, phase unwrapping method can be improved using 2D image information: basic principle method was applied to smooth area, quality-guided unwrapping and least-square method were taken in shadow or break area for phase unwrapping respectively. Experimental results show that desired phases can be correctly and quickly unwrapped in proposed method.
A New Method for Heavy-Haul Train Operation Monitoring
Authors: Wang Jun , Liu Jian Xin , Li Yi Fan
Published: September 2013

Based on the vehicle-track coupled dynamic theory, a new method was developed to monitor the state of heavy-haul train, this method can dynamically monitor the wheel/rail dynamic safety performance of heavy-haul train in the dangerous operation condition. The results show that: wheel/rail dynamic action is obvious whether the wheel flat is new or old, and wheel flat could lead to mutational vertical force.
Signal Detecting and Characteristic Measurement of a Capacitive Triaxial Micro-Accelerometer
Authors: Jiang Zhi Hua , Ma Zong Yi , Yuan Ye
Published: September 2013

This paper introduces the principle of capacitive detection and specific method of signal detecting based on a triaxial micro-accelerometer. The corresponding detecting circuit is designed, and a suitable test system is set up. The sensitivity and accuracy test results of the triaxial micro-accelerometer show that all the masses sensitivity has nice consistency, the micro-accelerometer is feasible in theory and practice, and with the capability of precisely measuring the input acceleration in three directions.
Study on Principle of Spacecraft Surface Charge and Discharge
Authors: Zhang Pei , Yuan Qing Yun , Xu Bin
Published: September 2013

Spacecraft surface charge and discharge is an important reason for the failure of the spacecraft in the space environment. This paper introduces the principle of spacecraft surface charging and discharging , from the spacecraft surface charging discharging phenomenon found to the harm of charge and discharge, elaborated the spacecraft surface charging protection method.
A Method for Subsidence Monitoring of Similar Material Simulation Test in Coal Mining
Authors: Tao Min , Chen Xin , Ding Qiu Qi
Published: September 2013

To accurately monitoring the subsidence of similar material simulation test in coal mining, a static deformation measurement system is proposed based on the digital image processing and photogrammetry techniques. Firstly pastes reference points and observation points on model frame and working face respectively. Before exploitation, calculates the 3D coordinates of those artificial points, transfers the default coordinate system to user defined coordinate system using 3-2-1 transformation method, and defines this stage as basic stage. Then start mining, records enough images from different position and angle, and calculates the 3D coordinates of the deformation stage. Finally aligns the single deformation stage to the basic stage, by tracking and comparing the 3D coordinates of the homonymous points, the subsidence of observation points are obtained. One similar material simulation tests were conducted which prove good performance of the proposed measurement system.
Cause Analysis and Diagnosis of Unbalanced Vibration of Rotor
Authors: Chen Hong Wei , Wang Rong Jie
Published: September 2013

The paper starts from from the rotor unbalance fault, and analyze the reasons of unbalanced rotor are improper design, material defects, process and assemble error, process problem; Summarizes the frequency spectrum characteristics of rotor unbalance, its features, frequency components of speed have protruding peak on spectrum diagram of detection in radial direction;Puts forward the diagnosis methods of Unbalanced vibration, the first step is to analyze vibration signal frequency components, then analyze its characteristics of vibration in the direction of the change of amplitude and phase. Proved by examples, this paper summarizes the rotor unbalance analysis and diagnosis method is simple and practical, and has reference significance for other vibration problem.
Design and Implement of Intelligent Monitoring System Driven by Ultrasonic Motor
Authors: Yin Hao , Li Hua Feng
Published: September 2013

A visual tracking system based on ultrasonic motors is designed in view of shortcoming of traditional video surveillance system, which has a large volume, complicated structure. The pan-tilt can rotate in horizontal and vertical directions by using two ultrasonic motors served as the driving units. The image from video camera is processed and the target is identified and real-time tracked by rotating the pan-tilt which is controlled by ultrasonic motor. Compared with electromagnetic motor, the ultrasonic motor has advantages of high torque at low speed, quick response, high precision and self-locked, which makes the structure simpler and control more convenient. Experimental results show that the system can be stably tracking the selected target with fast response speed and relatively high tracking accuracy.
The Research of Permanent Magnet Sealing Technology in Vertical Hot Galvanized Pot
Authors: Li Jing , Zhao Hong Yan , Liu Sen
Published: September 2013

In order to solve the confinement problem of liquid metal, permanent magnet sealing is discussed in this paper, and its principle is introduced. Based on calculations, some helpful conclusions are made, which are important for research on hot dip galvanizing process without sink roll.
Diesel Truck Overall Quality Analysis Based on PCA
Authors: Yu Zhen Yu
Published: September 2013

The quality of diesel truck overall quality is measured through a series of performance indicators. This paper analyzes the complex diesel truck systems through the use of principal component. Through the analysis, several major indicators which affect the truck service conditions are found in many of the performance indicators, and major factors affecting the serviceability of diesel truck are obtained.