bluuebunny/crossref_metadata_2025 huggingface dataset:
A New Perspective on ECL Circuits
Authors: Hu Rong Bin , Zhou Shu Tao , Chen Guang Bing , Fu Dong Bing , Zhang Xiao Ying
Published: September 2014

In this paper, the complementary and selective characteristics of ECL (Emitter-Coupled Logic) circuit are fully taken advantage to implement various logic gates including MUX, XOR, AND, NAND, OR, and so on. From the analysis, we find that one ECL circuit can realize many relative logic functions, which is more flexible than CMOS logic. We conclude that if the characteristics of ECL circuit are fully taken advantages, the design of logic functions can be very easy.
A Multiplexer with Split Devices for High Channel Isolation
Authors: Huang Xiao Zong , Liu Lun Cai , Huang Wen Gang , Liu Fan , Luo Jun , Zhu Dong Mei , Huang Zhi Hua
Published: September 2014

A multiplexer with split devices for high channel isolation was proposed in this paper. The multiplexer is the most essential circuitry for multi-channel video signal acquisition systems. In the multi-channel applications, high isolation performance is required basically for the efficient signal processing. The noise propagation between channels is unexpected. The split devices technique is employed in the design work. Redundant transistors are inserted between the split cells to realize the noise grounded. This multiplexer is simulated and verified in the commercial CMOS process, and the isolation of more than 70dB was achieved. It has been embedded in a multi-channel analog signal processing system.
An Integrated Ramp Generator for PWM Voltage Regulators
Authors: Huang Xiao Zong , Liu Lun Cai , Huang Wen Gang , Luo Jun , Zhu Dong Mei
Published: September 2014

An integrated ramp generator is presented in this paper. For traditional implementations, the amplitude clamp is realized with zener diode to limit the output voltage to ±VZ, while the zener diode is not available for standard CMOS process. The transmission gate is utilized to make the output voltage in the determined range. The reference voltage is provided by a bandgap voltage reference with temperature compensation, which guarantees the temperature stabilization of the frequency of the ramp generator. The ramp generator was fabricated in a commercial CMOS process. The frequency of 44kHz is achieved under the power supply of 3.5V, and the frequency variation of 41kH to 46kHz with the power supply of 3.3V to 5V.
Research on Water Supply System under Variable Frequency and Constant Pressure Technology
Authors: Li Tai Zong , Zhang Peng
Published: September 2014

The variable-frequency regulating speed technology is a new type of ac motor non-polar regulating speed technology, with the continuous development of power electronic technology, the variable-frequency regulating speed technology is becoming more and more perfect. With frequency control as the core, the application of water supply control system under constant pressure is more and more widely. Taking PLC as the control center, this article uses sensor technology and digital PID control to realize the water supply system under variable frequency constant pressure, and uses the MCGS software to design system to monitor the man-machine interactive interface.
Research and Design of a Novel Power Supply System Used in LED Light Sources for Plants
Authors: Leng Jian Wei , Wang Xin
Published: September 2014

Due to various reasons, the power supply system of LED light sources exist many problems to be solved and optimization. This paper designs a set of small photovoltaic system and equipped with new energy device, provide enough clean energy to LED plant lighting system, reduce electricity costs. We present an improved three point tracing algorithm to trace the maximum power point of solar panel, to maximize the photovoltaic conversion rate. Using double quadrant half bridge current reversible DC/DC converter circuit to realize the automatic charging and discharging of the energy storage module.
Research of Node Importance for Sneak Circuit Analysis Based on Quantitative Model
Authors: Xie Yan , Ma Qi Shuang , Xu Ping
Published: September 2014

Sneak Circuit Analysis (SCA) is a technical means. It can solve practical problems in engineering, provide security of the system. To solve the problems of traversal qualitative for sneak circuit analysis, the importance of switch nodes in circuit network was proposed based on the quantitative analysis model of sneak circuit. Quantitative models for sneak circuit analysis were established and the circuit network's composition method was determined based on circuit topologies and line information. Because of the limitation of full traversal method, polycondensation degree was applied to evaluate node importance in sneak circuit analysis. The importance of switch nodes was recognized by taking degree of polycondensation as an evaluation indicator. Key nodes take core analysis algorithms and the other nodes use adding analysis algorithms. To illustrate the effectiveness of this method, emulation of switches’ state was taken as the example of sneak circuit compared with traditional methods of identifying node importance such as node degree and betweenness.
Design of a Second-Order Sigma-Delta Modulator
Authors: Guo Min , Deng Hong Hui , Ding Bo Wen , Yin Yong Sheng
Published: September 2014

A second-order single bit Sigma - Delta modulator which can be applied to pressure sensor is designed in this paper.The modulator uses switched-capacitor circuit,and the operational amplifier adopts a differential folded-cascode structure with PMOS tube as input. Optimizes the coefficients at the system level design using Simulink tool. The schematic simulation and analysis is by the tools of Spectre and MATLAB with Global Foundry 0.35um CMOS technology. The modulator with oversampling rate of 256 is designed at the 3.3V power supply. Finally, this paper shows the circuit simulation results of the sigma-delta modulator whose signal-noise rate is 103.9dB and resolution is 16.97bits.
The Impact of Power System Voltage Regulation Caused by Wind Disturbance
Authors: Liu San Ming , Wang Zhi Jie , Wang Hong , Chen Shu Ting , Li Ying
Published: September 2014

It studies the impacts of the wind speed disturbance such as the gradient wind and gust on the active power, reactive power and voltage of the system. In the process of wind speed disturbance, double fed wind turbine increases or reduces the reactive output of wind turbine timely according to the changes of system voltage, ensure the machine terminal voltage to operate in the normal range .
Transformer Differential Protection Applications of the Applicant Electronic Current Transformer
Authors: Mei Li Xue
Published: September 2014

This paper mainly analyses, improvement and experiment using the device of Wuhan Hua gong Electric Automation Co., Ltd. existing. As a comparison, this paper firstly analyzes the measuring principle of electromagnetic current transformer and the saturation problem, coil measurement principle and error, a brief summary of the distinction between the two. One time, two times of converter and the merging unit as part of electronic current transformer, this paper also made some analysis. Then analyzed some improvement of transformer differential protection of electronic current transformer based on improved. Firstly, the hardware protection data interface part of, through the analysis of the reasonable selection, then it is based on transformer differential protection of electronic current transformer, the two line ratio braking curve formulation through the analysis of unbalanced current sources, make do with electromagnetic current transformer current unbalance and the ratio braking curve based on the comparative analysis. Finally, the relay protection software the program is changed the basic function of the device is tested, the test results showed that the improved protection device.
Analysis of the Bionic Wing's Aerodynamic Performance
Authors: Jiao Jing Shan , Hua Xin , Ji Zhang
Published: September 2014

According to a certain type of flying in the no imitation gull wing design straight wing with man. Then the bionic wing and conventional airfoil are simulated, and compared the two kinds of wing aerodynamic parameters. The study found, hale no flow man-machine bionic wing design can effectively improve the wing, reduce the upper wing surface flow separation, reduce the lift loss, reduce the pressure drag, improve the lift drag ratio of the wings. In this paper, the simulation results for the design of the UAV wing provides certain reference.
Simulation Research on Starting Resistor Parameter Selection of 10kV Chain Static Var Generator
Authors: Hu Shao Gang , Wang Shu Han , Liu Jun , Wang Ji Hao , Wu Si Cong
Published: September 2014

Before commissioning, SVG first requires a separated excitation process: network voltage charges the capacitor on DC side in each H-bridge power module via the starting resistor (IGBT in all modules shall lock impulse). After charging, SVG has enough power for dynamic var compensation of the system. This paper introduces fundamental functions of the starting resistor in SVG, analyzes the influence of starting resistor selection on safe operation of the device, raises the principle of selection and conducts simulation verification by using of PSCAD.
Impacts of H-Bridge DC Side Capacitor on Chain SVG Performance
Authors: Zhang Yun Shan , Chen Jian Jun , Wei Cheng Ge , Song Li , Hou Bao Ming , Wang Shu Han , Wang Ji Hao , Chen Jia Yong
Published: September 2014

As the representative of 3G dynamic reactive compensation technology, the chain SVG voltage has advantages of high-grade and high compensation capacity which mainly owe to the structure that each phase of conversion chain consists of a plurality of H-bridges in cascade. Although the DC side capacitor is not the core device in H-bridge, it has the job of providing DC voltage source during H-bridge circuit conversion. DC side capacitance affect not only the operation reliability of chain SVG, but also equipment cost and operation loss, so it should be selected reasonably. This paper introduces the role DC side capacitor plays in H-BRIDGE. PSCAD is used for simulated contrast analysis of chain SVG with different capacitances, and raises the criteria for DC side capacitance selection. Finally, the correctness of the criteria is verified based on the actual operation data of the field equipment.
Design of a Simulating Control System for Hybrid Wind/PV Power Generation
Authors: Ma Qing Fen , Liu Jian Hua , Yu Xiao
Published: September 2014

A system based on STM32F103 chip is designed to simulate the hybrid wind and PV wind power generation control process. The simulation system consists an electric motor with stepless rotational speed regulating feature to simulate wind turbine power generation, a light intensity sensor to simulate PV power generation with its measure results, the electrical source of chip microcomputer to simulate the current output from storage batteries, and two electric motors with different power to simulate the direct-current loads. The control strategy and the corresponding programs are developed based on certain hardware composition and the control system is implemented and operates well.
A Circuit Board Fault General Detection Platform Based on the ASA Technology
Authors: Cao Yong , Gu Xing Long , Shao Si Jie
Published: September 2014

Aiming at the demand of circuit board fault general detection, a experimental platform whose excitation source design scheme optimized, based on the ASA(analog signature analysis, short for ‘ASA’) technology, has been built on. Then to take some discrete components and a typical PCB as the experimental objects, the corresponding VI curves were obtained with this platform.The results show that this platform can realize general fault detection through the comparison and analysis of the VI curves before and after fault settings.
Research on Calibration of Power IGBT Model Test Equipment
Authors: Liu Chong , Zhong Bo Han , Zhang Yu Feng , Kan Jin Song
Published: September 2014

Power IGBT module and its dynamic and static test equipments are widely used. How to calibrate the IGBT module test equipments is in great demand. Based on the investigation of domestic and foreign method for power IGBT module test equipment calibration, the calibration method of the important parameters, pulse current, for this equipment were researched in this passage. the Rogowski coil and the data acquisition unit were used to realize the pulse current amplitude (up to 5000A) calibration. Calibration device for power IGBT module test equipment was setup, calibration specification for power IGBT module test equipment was authorized to ensure the values of power IGBT module test equipment.
Simulation for the Combustion System Work Process in Internal Combustion Engine
Authors: Shi Yan , Liu Yong Feng , Jia Xiao She
Published: September 2014

In order to simulate the combustion system work process for an internal combustion engine accurately,the paper simulates the combustion process which based on the modified 4JB1 engine and used the KIVA-3V software. Variables such as cylinder pressure, cylinder temperature, NOX and SOOT emission are predicted and analyzed by using single injection strategy.It was found that the production of NOX begins from the moderate burning period, reaches a peak quickly and keep constant. The production of SOOT is mainly in the late of fast burning period to the moderate burning period and most of the SOOT is oxidized.
Identification Method of Pavement Crack Based on Topology Contravariant
Authors: Wang Jian Feng , Jia Yun Liang , Yang Fan
Published: September 2014

This paper use the topology contravariant to discriminate the intrinsic properties of the pavement crack, structure the metric space of complex data set, make up the topology space, deduce the topology contravariant relation. To distinguish the pavement crack, the data of the crack must be gained. Using the topology contravariant relationship from the original space of the Pavement crack to the target space, the detection to the pavement is more accurate and faster. The theory of this paper has been tested by simulation.
The Error Correction Model on Kalman Filter
Authors: Hao Ya Qiu
Published: September 2014

In this paper, authors extracted the data from the GPS equipment on the bus and established the real-time bus arrival time prediction model and bus running speed prediction model based on Kalman filtering technique. Analyse the error and build the error correction model. Firstly the bus running speed was predicted in the next section with the bus running speed prediction model, and then the bus arrival time was predicted with the real-time bus arrival time prediction model. Applying the newest information of bus running speed and bus arrival time, we were able to predict the real-time bus arrival time dynamically. The bus running speed prediction model and the real-time bus arrival time prediction model were assessed with the data of transit route NO.300 in Beijing. Lastly we assessed the real-time bus arrival time with the error between bus arrival time and real-time bus arrival time so that the prediction error was improved to 10 seconds which has higher prediction accuracy.
An Approach of Traffic Sign Recognition Algorithm on MATLAB
Authors: Li Jia Yang , Song Mei Xia
Published: September 2014

Traffic sign recognition system is a great important part of intelligent transportation system and advanced auxiliary driving system, and it is a key problem to improve the accuracy and real-time performance of traffic sign detection in reality.Considering to the perspective of accuracy and real-time of traffic sign detection and recognition, this article built the traffic sign detection and recognition method based on MATLAB. Finally, the paper proved the conclusion, and future traffic sign detection and recognition need to be further research topics and practical application prospect.
Automatic Expression Recognition Based on Mouth Shape Analysis
Authors: Li Zhi Jie , Duan Xiao Dong , Wang Cun Rui
Published: September 2014

This paper presents a simple approach for facial expression recognition. In the preprocessing stage, rough lips region is obtained from original face image using HSI space. Then, based on the binary image, exact lips region is located within a rectangle. To achieve this goal, PSO algorithm is applied to search for the best rectangle region. Finally, expression is estimated based on the parts ratio of lips. The simulation results show that this geometric approach is accurate and effective, even for the slightly smile.
Finite Element Simulation of Track Shoe and Ground Adhesion
Authors: Yang Cong Bin , Gu Liang , Li Qiang
Published: September 2014

Soil constitutive model was established based on elastic model and Mohr-Coulomb model. Simplified common form track shoe was determined for finite element modeling. Loading and boundary conditions were determined based on the actual driving conditions of the vehicle. Meshing was based tetrahedron. Finite element model was compared with experiment to verify the validity.
Parameter Estimation of Co-Channel AIS Signal Using Ambiguity Function
Authors: Zhou Hao Su , Wang Jian Xin
Published: September 2014

A new data-aided algorithm for parameter estimation of the co-channel AIS signal transmitted over the additive white Gaussian noise channel is proposed in this paper. The co-channel signal consists of a strong signal with high power and a weak signal with low power. The parameters of the strong signal are estimated by searching the ambiguity function of the co-channel signal in two dimensions. A reference signal is therefore reconstructed with the estimated parameters and the aided data. By removing the ambiguity function of the reconstructed reference signal from that of the original co-channel signal, a new co-channel signal ambiguity function is obtained, from which the parameters of the weak signal are estimated. The simulation results illustrate that the proposed algorithm can estimate the parameters of the co-channel AIS signal effectively.
Design of Ship Communication System Based on CAN Bus
Authors: Wang Xi Kun , Zhang Jin Hai
Published: September 2014

Existing ship electronic equipment are based on serial interfaces in accordance with NEMA0183 Protocol for the exchange of information, complex low transfer rates, lines, nodes exist, poor reliability shortcomings. Fieldbus (CAN) to its high anti-interference ability and higher traffic rates made up for these shortcomings, has been widely applied to automotive electronics, but in application of ship data communication has not been very good. CAN bus technology with outstanding reliability, timeliness and flexibility for the development of modern marine communication system offers a new way.
Research on the 650GHz Folded Waveguide BWO
Authors: Tang Yan Na , Shi Li , Xie Wen Qiu , Wang Zi Cheng
Published: September 2014

The terahertz (THz) spectrum technique has become an important research content of electromagnetic field in recent years. Folded waveguide backward wave oscillator (BWO) is suitable to be used as THz high-power electromagnetic radiation source. Because it can realize electronic tuning within a wide frequency band and doesn’t require pre-stage source amplifier. In this paper, the high frequency characteristic, the transmission characteristics, and the particle beam wave interaction characteristics of the structure of folded waveguide BWO have been analyzed, and it is utilized to design geometry parameters of 650GHz folded waveguide slow-wave-structure (SWS). The design is been validated by particle beam wave interaction simulation experiments. The experiment results show that the output is over 1.7W within 42GHz bandwidth, and the electron efficiency can exceed 1%.
Design of the Control System for Chinese Mitten Crab Nurturing Megalopa Based on Fuzzy-Control Technology
Authors: Cui Hong Guang , Ren Wen Tao , Wang Bo
Published: September 2014

Using the indoor control system of breeding mitten crab could increase the survival rate and quality effectively. This paper based on the analysis of environmental water quality of breeding mitten crab, according to the characteristics of crab cultivation of water environment, then the method of fuzzy control was proposed to realize the automatic control, the application of MATLAB software complete the design of the fuzzy controller. Combining STC12C5A08AD single chip as mainly control unit and fuzzy control method, design the hardware and software of the crab cultivation environment control system, and the design of fuzzy controller. In the case of the pH control test results, the system performance approximately for the time constant of a character of first-order inertial of 27.535s, which caters the requirement of pH value of crab cultivation. The invention of this controlling system can be a fundament of control of aquaculture environment.
Comparison between Mean Filter and Median Filter Algorithm in Image Denoising Field
Authors: Sun Xiao Xin , Qu Wei
Published: September 2014

An image denoising method based on spatial filtering is proposed on order to overcoming the shortcomings of traditional denoising methods in this paper. The method combined mean mask algorithm with median filtering technique is able to replace the gray values of noisy image pixel by the mean or median value in its neighborhood mask matrix and highlight the characteristic value of the image. Peak signal to noise ratio and mean square error are used as the evaluation index in this method and comparison between mean filter and median filter is done. The experimental results show that this denoising system makes the images have a high signal to noise ratio and integrity of edge details and take into account real-time, and fast response characteristic of the system.
An Interference Cancellation Space-Time RAKE Receiver in Asynchronous Cooperative Communications Systems
Authors: Li Dong Wu , Pei Chang Xing , Meng Yun Liang
Published: September 2014

Space-time two dimensional RAKE receiver was introduced into asynchronous and cooperative communication system, and a high-performance RAKE receiving algorithm was proposed. In this algorithm, the transmitting signals were estimated coarsely by traditional space-time rake receiver, then each multipath signal was reconstructed using the estimated result as well as the channel impulse response, and then eliminated successively from reception signals, so it can eliminate Inter Symbol Interference of receiver signals which generate by multipath fading, and the line of sight (LOS) component in the received signal was obtained, and finally, the space-time combination was carried out to the LOS component, and the spatial diversity was achieved. This algorithm can effectively reduce the bit error rate of the asynchronous cooperative communication system. Simulation result shows that the new algorithm can improve the performance of traditional space-time RAKE when SNR is higher than 5dB dramatically.
P-Sets and the Reduction-Identification of F-Information Camouflage
Authors: Fan Cheng Xian , He Fu Jie , Zhong Hui
Published: September 2014

P-sets is a set pair composed of internal P-set and outer P-set, which has the dynamic characteristic. The generation concept, camouflage measure theorem and reduction theorem of F- information camouflage are given, and next the reduction-identification criterion and identification method of F-information camouflage. Using the above theory results, the application of the identification-reduction of F-information camouflage.
Mappings from Binary Variables to QAM Symbols and Improvement of Peak Envelope Power of OFDM Systems
Authors: Zeng Fan Xin , Zhang Zhen Yu , Qian Lin Jie
Published: September 2014

This paper establishes a mapping relationship from independent binary variables to QAM symbols. By these proposed mappings square QAM constellation can be produced by binary signals rather than quaternary signals, which is advantageous to operation of those apparatuses driven only by binary signals. As one of applications of these presented mappings, we give an example to verify improvement of upper bounds of peak envelope power in an OFDM communication system employing QAM complementary sequences.
Matrix Projective Synchronization of Chaotic Systems and the Application in Secure Communication
Authors: Liu Feng
Published: September 2014

First of all, we investigate adaptive matrix projective synchronization of the chaotic system. Finally, this method is applied to secure communication through improved chaotic masking. The information signal is mixed with the chaotic signal before being transmitted, and is recovered without distortion through the synchronized receiver. Simulation results show that the scheme has a good performance.
Mix-Mode S Parameters Analysis of Crosstalk for Twisted Differential Line on PCB
Authors: Guan Ya Lin , Wang Ling Ling , Wu Shu Hong
Published: September 2014

In this paper, twisted differential lines on multi-layer PCB is modeled with 3D Full-wave EM tool, and crosstalk is analyzed based on mix-mode S parameters. It is compared with traditional differential microstrip line. Then the simulation results demonstrate that twisted differential lines on multi-layer PCB can enhance immunity against crosstalk .
High Time Resolution Scanning Imaging Technique Research Based on Area CCD
Authors: Jin Jing , Bai Yong Lin , Yang Wen Zheng , Zhu Bing Li , Wang Bo , Gou Yong Sheng , Wang Qiao Li
Published: September 2014

A new transient spectrum detection method with high time resolution based on area CCD is proposed. By reforming and mending working sequence of CCD, utilizing principle of frame restore, linear spectrum detection with high time resolution was achieved. This method improves frame rate and time resolution of CCD greatly. LED impulse light experiment is performed to demonstrate feasibility of the method. Experiment results show that this transient spectrum acquisition method based on area CCD is efficacious, detection frame rate can be as high as 10Mfps. Time resolution is less than 100ns, and can be able to image 2048 times continuously. The experiment is of importance to expand application of CCD in the transient spectrum detection area.
Design Method of H.264/AVC Video Watermarking Based on Intra Prediction Coding
Authors: Deng Hua , Zhang Chun Hua , Yu Hai Zhu , Zhang Jj Fu
Published: September 2014

Aiming at problems meet in the copyright of H.264/AVC video, a method of digital watermarking based on intra prediction coding. The method combines wavelet transforms, chaos theory and spread spectrum modulation to preprocess grayscale image. Then according to different intra prediction mode of I-frame brightness sub block, selects different DCT coefficient, and embeds the watermark information by improved LSB algorithm. Experiments show that, this method ensures video effects without distortion, high blind detection accuracy, and little effect on code rate.
Research of Anti-RGPO/RGPI Jamming for Radar Seeker
Authors: Wu Di , Liu Hui , Wang Ya Jun
Published: September 2014

Analysis on the operation principle of digital radio frequency memory range (DRFM) with range gate pull off/in (RGPO/RGPI), a model of jamming signal is found in this paper. The use of stretch in the process of radar seeker receive signal is considered, so that the actual target echoes and jamming echoes will be moved into different frequencies. Then a low pass filter can be utilized to cancel the jamming signal and the actual target echo can be rebuilt through inverse stretch dealing. The simulation results show that this method can effectively suppress jamming signal.
Design of Fast Second-Order IIR Low-Pass Filter Based on Parameter Optimization
Authors: Li Qi Rui , Jiang Ming Ming , Luo Bing , Hu Xiao Ping , Tang Kang Hua
Published: September 2014

Second-order IIR low-pass filter is widely used in digital signal processing. A fast filter algorithm without multiplication is proposed for it in this paper. A configuration method for the filter coefficient of fast algorithm is put forward, considering the characteristic of second-order IIR low-pass filter coefficient and the filter’s mathematical model. A performance analysis of fast second-order IIR low-pass filter without multiplication is shown in the paper, and the performance of the fast filter is shown by example using MATLAB simulation. What’s more, the algorithm’s rapidity is verified by an implementation of the filter on FPGA, which turns out that fast filtering algorithm takes only 54.7% of common algorithm’s operation time to realize the same filer function.
Analysis and Study of 4G Mobile Communication Technology
Authors: Shen Fang , Xu Gang
Published: September 2014

With the development of the society and increasing demand of life and work, mobile communication technology is undergoing tremendous change and progress, with a wide range of new services coming up and the range and number of users expanding.In a great variety of mobile communication services, 4G mobile communication technology, as the mainstream of the next generation of mobile communication, features stable operation, high transmission rate, and wide coverage.Based on 4G mobile communication technology, this paper performs profound study of its key technologies and applications.
Research of the Cylindrical Surface of the Panorama on the Mobile Terminal
Authors: Liu Yi , Liu Jia , Cen Zhi Jun
Published: September 2014

Describe the panorama of the build process, use a matching algorithm based on feature line to calculate the offset, combine with a smooth linear image fusion algorithm, use fade and the way to achieve image fusion splicing, optimization and related algorithms proposed cylinders panorama software design, the perfect panorama of modern technology and smart mobile devices achieves a combination of hardware-based panorama shooting android system and browser,Stitching speed, lifelike images.
CMOS Real-Time Image Acquisition and Display System Design Based on FPGA
Authors: Leng Jian Wei , Wu Ying Hui
Published: September 2014

Based on characteristics of image acquisition system of high-speed and large-capacity, this paper presents a CMOS Image sensor data acquisition system that is using FPGA Chip as its core processing devices. Data acquisition logic control unit is designed by FPGA. The modular structure of the system design, FIFO, ping-pong and other technology are used in the design process to ensure real-time data acquisition and transmission. FPGA implementation of video acquisition can improve system performance. It also has a strong adaptability and flexibility, and it is easy to design, debug and so on. Through the experiment, we can get a clear image.
The Implementation of Drawing System Based on MFC
Authors: Chen Hui E
Published: September 2014

In this paper, through the powerful visual programming tool called VC++ in the MFC library, used to achieve a function mapping system, its functions include drawing and linewidth graphics settings, select and text color for drawing. At the same time, a detailed implementation process of drawing system and function of the drawing system expansion, improves the system openness and practicality.
Study on Dynamic Simulation of Wind Turbine Gearbox Based on Pro/E and ADAMS
Authors: Yang Wen Zhi , Cao Ju Feng , Zhang Wei
Published: September 2014

Domestic wind turbines with 1.5MW gearbox as the research object, application of virtual prototyping technology (ADAMS) simulation of dynamics of wind turbine gearbox when braking .According to research gear box structure, size and other parameters, using Pro / E software to create a solid model of wind turbine gearboxes. After importing to the ADAMS software, add the necessary constraints and loads, virtual prototype model of the gearbox is established. The simulation of dynamics of wind turbine gearbox are carried out by using ADAMS, and the angular velocity of the in-out shaft, gear meshing force and the vibration when braking cloud are obtained. That result is match with the theoretical value through analysis and the accuracy of ADAMS simulation is verified. The simulation results show that the design level of wind turbine gearboxes can be improved by using the virtual prototype technology and lay a good foundation for further design.
Sequence Localization Algorithm Based on 3D Voronoi Diagram in Wireless Sensor Network
Authors: Yang Xi , Liu Jun
Published: September 2014

For nodes’ self-localization in wireless sensor networks (WSN), a new localization algorithm called Sequence Localization algorithm based on 3D Voronoi diagram (SL3V) is proposed, which uses 3D Voronoi diagram to divide the localization space.It uses the polyhedron vertices as the virtual beacon nodes and constructs the rank sequence table of virtual beacon nodes. Then it computes Kendall coefficients of the ranks in the optimal rank sequence table and that of the unknown node. Finally, it realizes the weighted estimate of the unknown node by normalization processing Kendall coefficients. Simulation experiments prove that itcan obviously improve the localization accuracy compared with the traditional 2D sequence-based localization and can satisfy the need of localization for 3D space.
Study of Image Inpainting Method Based on Bayesian Compressive Sensing
Authors: Dang Hong She , Zhang Na , Guo Chu Jia
Published: September 2014

To the question that traditional image inpainting methods depend on the structure characteristics of the image .The image inpainting method, on the basis of Bayesian compressive sensing, transforms the sparsity of the damaged image first, then gets the posterior distribution function of the sparse coefficient through Bayesian compressive sensing. At last, the mean and the variance of the distribution function are obtained. The mean can be used as the estimation of the sparse coefficient of the image, and the variance is the estimation of the noise. The emulation results proved that this method can improve the inpainting quality of images.
Limited Length and Limited Weight Intelligent Cutting System Based on Image Pattern Recognition and Closed Loop Feedback Device
Authors: Zuo Yan Li , Guo Xiao Fen
Published: September 2014

Rough cutting section and excess error will cause more waste and increase cost. This paper studies pattern recognition and image processing, proposes a method to implement limited length and limited weight cutting with pattern recognition and image processing technique. The experiment results show that the system is satisfactory in operation, maintenance, cutting precision, processes levels and rates of finished products. Collecting work field’s data with cameras from long-distance, this method will not only reduce the possibility for people to work in the bad circumstance, but also operate more expediently and more reliably, making the equipment and the worker safer. Strong anti-jamming can recognize the steel well and truly with these techniques. It can reduce the length error from 80mm to 10~15mm, so it can reduce product cost, and increase success rate of the finished product.
Research on the Application of Computer-Aided Sport Technology
Authors: Dong Liang , Ren Jun
Published: September 2014

In the target-oriented imaging and identification process, irregular single-frame moving image will produce aberration and dynamic distortion of edge, the effective of imaging is not good. A new feature contrast correction technology for moving image method is proposed in this paper to realize the moving posture correction. Experimental results show that the obtained offset of posture correction by using the improved algorithm is less than the traditional method. In addition, the high correction precision and improved peak signal to noise ratio all show the superiority of the proposed algorithm. It has good application value in the moving image fusion, identification and other field.
Optimization Design of Topology Structure of High Speed Train Communication Network Node
Authors: Liang Bi Zheng , Guo Shuai , Han Zhao
Published: September 2014

s: Based on the field bus technology, the computer network communication technology, embedded control system, the rapid development of technology and fault diagnosis technology, train communication network system based on formal method and simulation method are reviewed. For the application as a starting point, makes a research from the formal modeling, train communication network node system, dynamic property verification etc., summarizes the problems existing in this field, and the node system and topology communication network on the modern high speed train is optimized, provides system level reference for the design of train communication network and node system.
Study on Networking Architecture for 5G System to WLAN Interworking
Authors: Yu Li , Cheng Fang , Zhang Zhi Zhong
Published: September 2014

In this paper, the networking architecture for 5G system to WLAN interworking is studied. Firstly, the demands of 5G system to WLAN interworking were introduced. Then we elaborate 5G and HEW network which mainly refers to the network architecture. After summarizing the evolution of two networks, we propose the proactive networking architecture.
The Research on Phantom-Bit Technology of Digital Phase Shifters for Satellite Tracking System of Phase Array
Authors: Li Chao Hai , Jiang Wen Xian , Wang Guo Long
Published: September 2014

Phased array satellite platform self-tracking system is for the stability between the missiles and other high-speed movement of the platform and the relay satellite two-way information transmission needs to carry out the self-tracking technology research of onboard platform-dimensional active phased array satellite. The system uses a sub-array correlation method for accurate measurement of the angle of the satellite signal. Receiving array is divided into four 4 * 4 sub-array, each antenna signal combining unit 4 sub array for 4-way A / D to be converted, through down-conversion, filtering, extraction and other processes to get a digital baseband signal, the baseband digital signal processing is to extract the angle error information into digital beam orientation system for tracking filtering operation, thereby ensuring that the transceiver has been aligned with the satellite antenna beam direction. In this paper ,phantom-bit technology for satellite tracking system under the condition of minimum beam displacement is researched for satellite tracking system.
Multi-Station with one Frequency Fire Emergency Network Based on TDD-OFDM
Authors: Li Zeng
Published: September 2014

For the problem of presence fire district network, multi-station with one frequency fire emergency communication network based on TDD-OFDM is proposed. The network mode and the basic structure and operating principle of the receiving and sending equipment from central station, car relay stations, as well as single firefighter piggyback are introduced, as a result ,voice and video data can be high-speed transmitted, thus, the frequency utilization and bandwidth of the broadcast networks are improved.
Denoising the Total Magnetic Intensity Data in the Ocean Basin of the South China Sea by Using Various Filtering Techniques
Authors: Ma Ya Wei , Guo Liang Hui , Zhang Guo Li , Sun Lu Ping
Published: September 2014

Total magnetic intensity (TMI) data is an important data for understanding the seafloor spreading of the South China Sea. In this paper, we studied to denoise the TMI data in the ocean subbasin of the SCS by using various filtering techniques. Based on the noise features occured in the data, we utilize the directional filter to reject noise of NS direction, and then apply the anisotropic diffusion filter to further elliminate the bead-like artifacts. The denoised result presents a well conherence of magnetic lineations in the ocean basin. The magnetic lineaments trend to nearly EW in the eastern subbasin while NE in southwestern subbasin. The intensity of the magnetic lineaments in the eastern subbasin is stronger than that in the southwestern subbasin.
The Temperature Field Research of an Engine Cylinder Liner Based on ANSYS
Authors: Ye Yao , Wang Feng , Wu Yong Hai
Published: September 2014

The temperature field of cylinder liner directly affects the working process of the engine cylinder. Its research is an important research direction of the engine research. We analysis the location relationship between the cylinder liner and cooperate with the components analysis in this paper. Then the finite element model of cylinder liner component is established and boundary conditions such as gas convective heat transfer coefficient, the piston top heat transfer coefficient are analyzed. A certain type of engine cylinder liner is calculated by using ANSYS temperature field equation solvers. The model and the calculation method this article uses are of great significance for the temperature field research of other heat transfer components.
Demodulating Method of Frequency Predictable Digital FM Signal
Authors: Fu Gang , Lin Jian Hua , He Qian
Published: September 2014

This paper presents a new method for strong background noise of known frequency signal estimation method is then applied to the demodulated digital FM signal. This new method only needs to know the frequency of the demodulated carrier signal phase information without the need to complete the digital FM demodulation signal. Computer simulations show that the method has more than non-coherent demodulation noise immunity, and has a very strong ability of anti-phase fluctuations. Thus, the demodulation method has good prospects for engineering applications.
Motion Saliency Detection in Videos
Authors: Wan Quan Quan
Published: September 2014

In order to detect visually salient regions in video sequences, a motion saliency detection method is proposed. The motion vectors of each video frame is used to get two motion saliency features. One represents the uniqueness of the motion,and the other one represents the distribution of the motion in the video scene. Then, the Gaussian filtering is conducted to combine the two feature to make the motion saliency map, in which the salient regions or objects in the video sequences could be detected. The experimental results show that the proposed method could achieve excellent saliency detection performances.
Foggy Port Surveillance Video Clearness Algorithm Based on Wavelet Packet Decomposition
Authors: Xu Zhi Yuan , Wang Yong Kai , Su Xiao Hong , Liu Yi
Published: September 2014

Port surveillance videos are degraded seriously in foggy conditions. This paper presented a clearness algorithm based on wavelet packet decomposition. Firstly, we extracted the background image from degraded videos and established the updated model; Secondly, we detected the moving objects as foreground images; Thirdly, we defogged these images based on wavelet packet decomposition; Finally, we fused the background and foreground images together. The experimental results show that our method is more effective.
Investigation of Local Feature Extraction
Authors: Sun Da Chun
Published: September 2014

Feature extraction is an important subject of image analysis, pattern recognition, computer vision, etc. It is the fundamental to solve many different image problems. As the local feature has the characteristic of invariability even after image translation and rotation, changing of zoom, illumination or viewpoint, it has been widely applied to image registration, image mosaic, object identification, target tracking, digital watermark and image retrieval. Extracting stable feature of images has attracted lots of interest. In this paper, we provide the definition of local feature and steps of extracting local feature. The difficulties and trend of this technology are also briefly discussed.
Transient Numerical of Piston Wind in Subway Station
Authors: Bao Hai Tao
Published: September 2014

Computational Fluid Dynamics (CFD) is used for the investigation of the piston wind. The Navier-Stokes (N-S) equations and standard turbulence model were applied to set up the model. The train transient aerodynamic characteristic has been research during the crossing process. The simulation results are trustworthy and numerical simulation of piston wind is feasible using dynamic grid in CFD software, which provides the basis for the virtual design of piston wind. It is significant importance for further studying the structure of train, shorten its development and guiding significance for practical application.
The Research on the Spindle Vibration State Suppressor after Remanufacturing
Authors: Liu Ling
Published: September 2014

The overhung spindle system is studied as the object after remanufacturing, the spindle simplified cantilever and the mathematical model was established based on the simplified equivalent device. The simulation analysis of the dual cantilever was carried out by using ANSYS.The vibration mode and inherent frequency of the cantilever, the deformation caused by the applied loads was given in this paper.It is designed by the linear quadratic optimal control of two state regulator through analyzing the vibration form and loading condition,use of independent modal control algorithm based on the detection of the position feedback control,It is inhibited effectively when a cantilever beam subjected to external transient pulse disturbance caused by two order and higher order system mode vibration,and using the Matlab software programming for active vibration control effects simulation.In addition.Matlab software gave the image result of response of vibration system.Both the brief solution program and the accurate image data which corresponded with vibration theory showed the feasibility and superiority during solving these responses of the spindle vibration system after remanufacturing.Thereby,this research provided an easy and effective method to solve the response of general mechanical vibration system.
Analysis and Design of MVC-Based Work Flow
Authors: Mu Zhen Hai
Published: September 2014

In this paper, we design and implement workflows in Office Automation (OA) systems by using MVC pattern for enterprise routine business processes. Based on the layered design theory of the MVC design pattern, our implementation is separated in the Model, View and Controller components. Four major functions in our system are the workflow creation, collaboration, automatic document delivery and work flow search. The system consists of a front end and a back end. The front end is developed as a View layer; while the back end is comprised of a Model layer and a Controller layer. SQL Server 2005 is selected as the backend database management system. The database connections and operations are established and performed by the back end. Every module in our system accesses data by using dedicated interfaces, which create data channels from databases to the front and back ends and keep data consistency in the system.
Assembly Production Status and Development Trend of Industrial Electric Detonator
Authors: Wu Shan Ze , Li Hong Jun
Published: September 2014

China is a country with a large production of industrial electric detonator, whose annual production capacity has reached 3.7 billion, but its level of production technology is still low especially in industrial electric detonator assembly production and most of processes are by manual operation, leading to its low techniques and poor production conditions. Through in-depth analysis of the current status of the production process of electric detonators£¬this article summed up the bottleneck problem of industrial electric detonator assembly automation, compared the degree of automation of industrial electric detonator production at home and abroad, finally this paper discusses the development trend of industrial electric detonator production.