bluuebunny/crossref_metadata_2025 huggingface dataset:
Targeting on Enhancing 2D Aerial Image Information by Technology of Unsharp Masking
Authors: Li Chang Hai , Zhang Jun , Liu Yan Chun , Sun Zhi Hui
Published: July 2013

To obtain image enhancement by getting detail texture features rich through the subtraction between the original graph and low-frequency graph, utilizing the wavelet decomposition technique, separating the components of high frequency and low frequency in the 2D (two-dimensional) aerial image, filtering the low frequency subgraph, and retaining only the low-frequency part. Practice has proved that the unsharp masking algorithm of wavelet transforming has obvious superiority over the traditional algorithm. The algorithm can separate characteristics of different resolution details, adjust the filter window size, make the wavelet components of different scales enhanced, the detail more clear, get a strong sense of layer and good enhancement effect.
Algorithm of Spatio-Temporal Combining Video Denoising Based on Structural Similarity
Authors: Di Hong Wei , Huang Cheng Cheng , Gao Hui
Published: July 2013

An algorithm of spatio-temporal combining video denoising based on structural similarity is proposed for the video surveillance system. By motion detection to multi-frame images with block structural similarity, this algorithm can adaptively distinguish the still regions and motion regions of video image. Temporal weighted average filter to the still regions and spatial ANL filter to the motion regions are used separately. Experimental results show that the proposed algorithm can improve the image quality and greatly reuduce the computation time.
An Effective Solution to Improve GPS Position Precision
Authors: Xue Guo Yi , Liu Pei Guo , Yan Shao Shi
Published: July 2013

The sudden jump in position data will limit the application of single GPS in precision positioning field. In this paper, a simple real-time method to remove GPS position jump was presented. The result of the static test and kinematical test show that the method was effective on removing the position jump and highlight the short-term positioning precision of single GPS. Besides, it has little computational load and easy to be implemented real time.
Nonlocal Total Variation Based Image Deblurring Using Split Bregman Method and Fixed Point Iteration
Authors: Tan Dong Jie , Zhang An
Published: July 2013

Nonlocal regularization for image restoration is extensively studied in recent years. However, minimizing a nonlocal regularization problem is far more difficult than a local one and still challenging. In this paper, a novel nonlocal total variation based algorithm for image deblurring is presented. The core idea of this algorithm is to consider the latent image as the fixed point of the nonlocal total variation regularization functional. And a split Bregman method is proposed to solve the minimization problem in each fixed point iteration efficiently. By alternatively reconstructing a sharp image and updating the nonlocal gradient weights, the recovered image becomes more and more sharp. Experimental results on the benchmark problems are presented to show the efficiency and effectiveness of our algorithm.
Handwritten Character Recognition Using Depth Information by Kinect
Authors: Xia Yong , Yang Zhi Bo , Wang Kuan Quan
Published: July 2013

t is quite constrained for us to use some other input devices to communicate with computers. In this paper, we integrate human-computer interaction technologies with handwritten Chinese character recognition strategies using depth image information provided by Kinect sensor to realize an unconstrained handwritten character recognition system, which only uses our hand as input device. We predefine several hand gestures as instructions, and for the recognition of these hand gestures, we calculate the contour and fingertips of the hand used for writing using depth image taken by Kinect. By mimicking the functionalities of the computer mouse only using our hands, we can write freely in the air and get the original character image. After Gaussian blurring and normalization, we adopt some classic handwritten character recognition schemes to accomplish the recognition task. Experiments show that the system gives a good result.
Edge Detection of the Impulse Noise Pollution Image Based on the Rough Set
Authors: Liu Qing , Wei Hong Bo , Yang Xiao Ping
Published: July 2013

The rough set is an effective tool to deal with incomplete, uncertain and fuzzy problem. In order to extract the edges information of the image by impulse noise pollution, further service for the follow-up image analysis and understanding, on the basis of the impulse noise pollution image preprocessing, an adaptive edge detection algorithm is put forward to process the impulse pollution image using rough set theory in this paper. Considering the target edge features can form a series of edge point constraints as the algorithm foundation,this method starts from the characteristics difference of the image edge and target area. Firstly, series edge constraint points are defined, and then the related questions of these conditions are solved by using rough set theory, so the edge detection algorithm is established. The experimental results show that this algorithm can effectively extract edge from the noise image information, to overcome the sensitivity of traditional algorithm for noise.
Visual Search Method for Garment Image Based on SIFT
Authors: Liu Zheng Dong , Xiong Hong Yun , Wang Ya Yan
Published: July 2013

How to meet the customers requirement in product search is an import problem. Because the high-growing of e-commerce, a new demand emerges: the special-purpose search engine for searching goods from network shop. Our work focuses on the garment retrieval from the e-shopping database, which supports feature-based retrieval by shape categories and styles. This paper uses color and style characteristics of the garment images as a query information, based on the SIFT algorithm retrieval feature points of the garment image, and then using K-Means method to cluster the feature points. Use features to retrieve matching image from database of garment images.
Experiments on Image Processing for Micro-Assembly
Authors: Qiu Yong Rong , Li Yu He , Chen Yan Xiang , Guan Kai Sen , Duan Rui Ling
Published: July 2013

This paper introduces a micro-assembly system based on image processing and focuses on some key technologies. The system employed some orthogonal wavelet functions to filter images and the suitible filtering effects were obtained by Symlets wavelet basis. The auto-focusing method adopted in the micro-assembly system was the combination of coarse adjustment and fine adjustment. The resolution evaluation function for coarse adjustment was based on Krisch operator and the resolution evaluation function for fine one was based on high frequency component. Experimental results show that the focusing accuracy can reach ±4.0μm. A wavelet multiscale method based on variogram function was used in the edge detection, which can eliminate noise with more details retained. Generally the system can meet the requirements of micro-assembly.
Stereo Matching Algorithm Based on Edge Feature of Segmented Image
Authors: Zhang Yi , Huang Cheng Liang , Bai Lian Fa
Published: July 2013

Stereo matching of the disparity discontinuous boundaries and weak texture regions is still a problem of computer vision. Local-based stereo matching algorithm with the advantages of fast speed and high accuracy is the most common method. In order to improve the matching accuracy of the mentioned regions,a stereo matching algorithm based on edge feature of segmented image is proposed. Firstly, the reference image was segmented by Mean-Shift algorithm. Then, support window was dynamically allocated based on edge feature of segmented image. Finally, the disparity distribution of support window was adjusted by introducing weighting factor. The experimental results show that this algorithm can reduce noise and effectively improve the matching accuracy.
The Extension of Geodesics
Authors: Li Meng Jian , Geng Wei Dong
Published: July 2013

We introduced an extension of traditional geodesic. Local neighbourhood of smooth curve on manifold shows good propositions which make it possible to construct a geodesic mapping from the neighbourhood to a rectangular district of UV-plane. Length of subsurface extended from smooth curve is defined according to the parameterization induced by geodesic mapping. And extended geodesic is the curve with minimal length of subsurface it extends. We also proposed a constrained mass-spring based approach to solve extended geodesic on discrete mesh. Experimental result shows that it is a high precision approximation for problems of measurement where the path can not be reduced as a single curve.
Segmentation-Based Automatic White Balance Algorithm
Authors: Hu Yong
Published: July 2013

Classic automatic white balance algorithm always been invalidity when there are large color-blocks or less of highlights points occurred in cast images. In this literature, an improved automatic adjustment algorithm based on image segmentation is proposed to resolve the problem mentioned above. First, color images were transformed to HSV color space and low saturation area was segmented from S channel. And then, adjustment parameters were calculated by selected points. Experimental results show that the algorithm can effectively correct varied cast image with low computational complexity, and are suitable for various scenarios.
A Novel Image Degradation Scheme Based on Reversible Watermarking
Authors: Shi Xi , Xiao Li , Zhu Ying Xian
Published: July 2013

In some business applications, the rough content of a digital image can be accessed through public channel, but the detailed image can only be achieved by some interested buyers who pay for the key. Reversible visible watermarking provides a kind of protection, but covers parts of image. In this paper, we utilize the relationship between embedding capacity and visual distortion, and proposed a novel image degradation scheme for copyright protection based on reversible difference expansion watermarking. Experiment results show that our scheme degrades the images uniformly, and the general content is still available. And the legal users with key can restore the original image with full details and extract the copyright proof.
Based on LBF Model of Adaptive Distance Keeping Level Set Evolution on Medical Image Segmentation
Authors: Fan Li Nan , Ou Wen Jie , Sun Shen Shen
Published: July 2013

Because LBF model is sensitive to the initial position and regional model may causes excessive segmentation or inner cavity. The paper adds adaptive distance keeping level set method on LBF model. Evolution curves reduce limitation to the initial position. Meanwhile, an improved area weight coefficient makes evolution curve move inward or outward adaptively according to image information and it can detect object boundaries when it is in a region with intensity homogeneity. The method enhances capability of capturing boundary concavities. In addition, xconv2 instead of conv2 function during Matlab programming for improving the evolution speed in some sense. The experimental results show that the proposed method can get local characteristics of the brain.
A Robustness Watermarking Algorithm for Digital Color Image Print-Scan Process
Authors: Ge Yun Lu , Han Hui , Sun Xiao Dong , Wang Sheng Pin , Ji Sheng Yun
Published: July 2013

Most of watermarking algorithms are for digital grey image, which are not robust against the attacks of print-scan process, and the embedded information capacity is small. To solve these problem, a new method based on DWT transform and Walsh orthogonal transform for the print-scan process of digital color image was proposed. The method chosed the color spaces conversion from RGB to CIEL*a*b* for digital color image. The low frequency components of the DWT transform image was embed the watermark. The results show that the correlation of watermark is improved using Walsh orthogonal transform, the watermark extraction rate is high and image watermark is distinct and readable after print-scan process. And this method is robust against the various attacks of the print-scan process, such as color space conversion, image halftone, D/A conversion, A/D conversion, scaling, rotation, cropping, skew, and random noise signals.
“3G Network” Platform-Based Design for Smart Car Remote Telemetry and Control
Authors: Sun Yu Xuan , He Bin , Xie Ming Shan
Published: July 2013

For explore of prior unpredictable and unfriendly humans working environment, information return has a strong practical application. The article discusses how to remote control and command of the smart car operation, and how to transmit all kinds of information in smart car environment quickly and undistorted to commander. Researching method is the combination of 3G mobile communication network and smart car technology. The final design of the remote smart car product, the principle and the hardware design scheme are given in this paper.
The Temperature Control System Design of Microchip Level PCR Instrument Based on SOPC
Authors: Liao Hong Hua
Published: July 2013

A design approach of the temperature control of a novel microchip level PCR instrument based on SOPC technique is presented in this paper. The soft-core processor with RISC framework, NIOS II, which embedded in the FPGA (CyclonIII EP3C16F484C6) of Altera corp., is used as the key component to control the PWM controller achieving the temperature control of the micro-chamber stationary microchip level PCR instrument, to control the Avalon stream slave peripheral acquiring controller achieving the temperature signal detection by the flexible snake like copper wire temperature sensor, and to control the micro-pump and the micro-valve achieving the sample injection and sample outflow controlling. Simultaneously, the control temperature algorithm based on the Smith predictive and adaptive Fuzzy-PID is adapted in this system. The design of PCR microchip, the Smith predictive adaptive Fuzzy-PID temperature control algorithm, the hardware framework and the software design of control system are mainly introduced. And the simulation results testified the correctness of the design method and practicability. Keywords: Microchip level PCR instrument; Smith predictive and adaptive Fuzzy-PID controller; SOPC; The flexible snake like copper wire temperature sensor
The Design of INS under PBN
Authors: Chen Ming Qiang
Published: July 2013

The Global Positioning System (GPS) has been approved for a limited number of applications in civil aviation because it is not highly available for meeting safety-of life levels of integrity, which require timely alert if the system is unreliable for navigation under the environment of Performance Based on Navigation (PBN). This paper presents an analysis about principle of an inertial navigation system (INS) and design an new mechanical architecture of INS in terms of increased availability of GPS for civil aviation. This new mechanical architecture has a good mechanical properties in mechanical engineering of civil aviation.
Research Status and Key Technology of Portable Open-Loop Insulin Pump
Authors: Yao Yu Feng , Chen Yan Xia
Published: July 2013

Diabetes becomes the third-largest chronic disease after cardiovascular disease and cancer which threatens human health. Insulin injection is the most effective way to treat diabetes, and a lot of research institutions at home and abroad are dedicated to the insulin pumps. Insulin pump belongs to continuous subcutaneous insulin injection system, which can simulate physiological insulin secretion and large doses of delay when the patients are dining. At present, portable open-loop insulin pumps have been put into market. In this paper, the development history and research status-quo of insulin pump and the key technology of the pump are analyzed.
Drive System Design of a Two-Wheel Differential Tracked Mobile Robot
Authors: Cai Lin , Zhao Xiao Guang , Meng Chong
Published: July 2013

This paper designs a drive system for a two-wheel differential tracked mobile robot. The system has two control modes: remote control and autonomous control, which needs two drive modes. We use a selection signal sent by the remote controller to realize the switch of two drive modes. Traditional MCU or ARM based PWM control system has poor system accuracy and anti-interference, and is complicated to realize the switch of two drive modes. In response to these issues, this paper presents a control method based on ARM and FPGA. FPGA completes motor drive, motor rotation speed calculation and the switch of two drive modes. ARM is used as an upper controller in the autonomous mode. Experiment proves that the result of our method is achieved quite satisfactorily: PWM signal can be generated accurately and the switch of the drive modes is convenient. The drive system has high reliability and flexibility.
A New Method for Capturing Oscillation Center Based on Reactive Power Integral
Authors: Wang Yi Fei , Liu Di Chen , Liao Qing Fen , Xiang Nong
Published: July 2013

The construction and development of power system have made our country form interconnected power grid. When oscillates occurs without timely disconnected control, accident may spread which will cause stability damage and uncontrollable chain reaction. So, how to guarantee the system to make effective out-of-step separation in the critical moment is the significant task in current power system. This paper analyzes the characteristics of electrical quantity after out-of-step, proposes a criterion based on reactive power integral, and does simulation in CEPRI-36-node system. The experimental results show that this control can start from the comprehensive situation, adopt multiport electrical parameter, locate and capture oscillation center accurately, monitor system state timely, adapt to system network structure and operation mode change automatically, recognize condition of out-of-step rapidly.
Distinction of the Property of Low Frequency Oscillation Based on ARMA Mode Identification
Authors: Tu Lian , Liu Di Chen , Liao Qing Fen , Dong Fei Fei , Ji Xing Pei , Song Chun Li , Zhu Zhen Shan
Published: July 2013

Aiming at how to solve the question of quantitatively distinguish negative damping low frequency oscillation and forced power oscillation, the difference in frequency and damping ratio between the two kinds of oscillations have been discovered through mechanism analysis, and a new quantitative distinction criterion for the property of the low frequency is proposed. The oscillation data is windowing identified by ARMA model based on weighted recursive least squares algorithm dynamically, and low frequency type can be distinguished according to the changes of oscillation frequency and damping ratio during the oscillation. The simulative results have shown that the method is feasible and effective.
Reliability-Based Comprehensive Evaluation and Decision-Making for Distribution Network Planning
Authors: Liu Wen Xia , Zhang Yu Ying , Li He
Published: July 2013

Under the situation of distribution network construction, evaluating the reliability and comprehensive level of distribution network planning accurately is an important issue in decision-making progress. Based on the analysis of reliability related factors and the inner mechanism of the evaluation process, a reliability-based evaluation methodology of distribution network planning is proposed. Firstly, starting from the study of the reliability and conventional evaluation, a reliability-based index system and its evaluation process are presented. Then, combining the advantage of analytic hierarchy process (AHP) and date envelopment analysis (DEA) as well as Cross-Evaluation, a CE-DEA model with AHP constraint cone is developed for the comprehensive evaluating of distribution network planning scheme. Finally, the simulation results of a factual case are presented and discussed. The proposed methodology and comprehensive evaluation model are illustrated to be effective, providing useful guidance for the distribution network planning.
The Research of Position Inverse Solution for 6-DOF Manipulator Based on Quaternion Algorithm
Authors: Zhao Zhi Chao , Sun Sheng Qi , Li Xue Bin
Published: July 2013

For the problem of 6-DOF serial manipulator position inverse solution, the paper proposed a new method for 6-DOF serial manipulator position inverse solution by introducing the quaternion algorithm. The relative pose transformation expression in quaternion coordinate system is proposed based on the transformation relationship between dual quaternion and double quaternion, based on which the closed equation of 6-DOF serial manipulator position inverse solution times in the form of double quaternion is established. For the obtained four position constraint equations, the Dixon resultant is constructed and a equation of 16 yuan is derived which is neither with increases root nor with the leak root. And this point is proved by the Mathematica practical calculations. The process of the method is simple. And it can not only avoid extraneous roots, but also overcome some singular position caused by the correlation equation in the process of trajectory planning, and further, the real-time performance of control process is improved.
Based on the B-Splines to Smooth the Trajectory Planning of Composite Parallel Four-Bar Mechanism
Authors: Zhang Jian Jun , Zhang Zuo Long , Liu Qi Shuai
Published: July 2013

The composite parallel four-bar manipulator multi-objective function simulation by B-splines shows the new method for multi-objective planning trajectory of manipulator is effective. The algorithm minimizes the objective function for optimization. By setting restriction on acceleration, the method has been tested in simulation yielding good results which get the smooth trajectory through the via-points by fourth-order B-splines.
The Design of Logistics Handling Robot Based on MCU
Authors: Jiang Bao Hua , Qi Qiang
Published: July 2013

Using MCU as the control core, combined with a variety of sensors, based on the PID control algorithm, a robot is developed with a flexible mechanism and low price which can carry small cargoes. The paper introduces the principle, the working process of the system and analyses the application prospect of the robot in the field of logistics.
Analytical Optimization of a New Adjustable Magnetic Field Adhesion Mechanism
Authors: Chen Yong , Wang Chang Ming , Bao Jian Dong
Published: July 2013

A novel adjustable magnetic field adhesion mechanism for use in wall-climbing robot is designed. The magnetic field in air gap can be switchable by rotating the center axis of adhesion mechanism so that the magnetic adhesion force is variable and it is conveniently for robot adhesion and detachment from the wall. The influence of structure parameters on adhesion performance and the optimal dimensions of mechanism are obtained by parameter variation method for best performing design. The novel optimal mechanism has been dimensioned and its magnetic force is measured. The results are compared to the simulation and it is shown that it is one of the best performing of magnet designs published for wall climbing robot adhesion mechanism.
The Application of Sensor Technology in Sports Field
Authors: Xie Xian Jiao , Liu Li Ming , Xiang Jia Jun
Published: July 2013

We introduced the basic knowledge about sensor technology and its application in sports. We pointed out the development trend and the problems in the sports field in application by means of examples. We used the displacement and velocity sensor to test the athletes of weight-lifting, at the same time, we wish that the sensor technology could be applied better and wider in sports.
Precision Positioning Systems: An Overview of the State of Art
Authors: Aggogeri Francesco , Borboni Alberto , Faglia Rodolfo , Merlo Angelo , de Cristofaro Sara
Published: July 2013

In the industrial world the interest in Precision Positioning Systems is exponentially increasing in relation to the rapid growth of Ultra High Precision (UHP) machining. A greater attention is given to traditional techniques and developing of innovative solutions. This paper intends to present a review of the actual state of art in precision positioning system based on flexure hinge related to industrial machines, showing a comparison between different techniques.
Design and Analysis of Push-Pull Switching Power Supply on PSpice
Authors: Shao Zhu Lei , Tang San
Published: July 2013

Aiming at the problem of switching power supply stable output, a push-pull switching power supply was designed. the switching frequency is 100kHZ and the output voltage is 5V. System model of the push-pull switching power supply is established on PSpice, and research on the output performance of the push-pull switching power supply. By the parameter sweep analysis of load, the push-pull switching power supply can stabilize output in full load and light load conditions, and load regulation rate comply with the design requirements.
Automatic Solar Electrical Monitor for a Battery Charging Process Using a Network Remote Control System
Authors: Cheng Ho Chih , Chiu Min Chie
Published: July 2013

Pollution and climate change due to the use of fossil fuel can no longer be denied, and this coupled with a waning supply of oil leads one to inevitably conclude that a clean, sustainable energy source is needed. That source is solar energy, the cleanest, safest, and most environmentally friendly energy source we have. In this paper, a photovoltaic (PV) solar energy system is used to generate electricity that will recharge a battery (DC 12V). The portable recharged battery will serve as the energy source for an electric vehicle. Moreover, in order to reduce manpower, a PC-based remote electrical monitoring technique used in the battery’s recharged system will be established via a TCP/IP network. Consequently, a PV solar panel with a 30 Watt capacity used to generate electricity using a PC-based monitoring system is exemplified.
Research on the Automatic Detection System of Vehicle Condition Based on DSP
Authors: Xiong Xin Min , Wang Wei Sheng
Published: July 2013

A real time automatic detection system of the vehicle condition with the vehicles speed, mileage, oil quantity, water level and other status parameters was realized. In the system, digital signal processor (DSP) is used as main control chip. Hall sensors are used to detect vehicles speed and mileage. The capacitive sensors are used to test water level and oil quantity of vehicle. The data obtained by sensors are stored in a large capacity of serial FLASH memory, and displayed on the LCD in real time. These data would be uploaded to the upper computer from DSP through RS232 serial interface, so as to achieve the automatic detection, display and storage of vehicle condition parameters. The system has strong practicality.
Design of Intelligent Temperature Controller for UAV Airborne Terminal
Authors: Li Ping , Hu Yong Hong , Du Mei Xia
Published: July 2013

Introduce a multichannel intelligent temperature controller to ensure terminal set of UAV (unmanned aerial vehicle) work under proper temperature. Hardware circuit is implemented through central unit microcontroller ADuC812 extend basic collecting and driving circuit. Heating algorithm employs fuzzy algorithm with prediction model and integral effectiveness, which overcomes the problem that traditional PID algorithm presents barely satisfactory in time delay system [1]. Simulations show this design well meets requirements of UAV airborne terminal computer, possesses good dynamic performance and smaller steady-state error, and avoids oscillation phenomenon. Practical application approves that the measurable temperature range is from-50°C to +50°C with accuracy +/-0.1°C, and static error of temperature control is less than or equal to +/-2°C, which satisfies application demands.
The Temperature Monitoring System Based on S7-200 PLC and Configuration Software
Authors: Zhang Ying , Zheng Yong , Xue Zhong , Zhang Shi Liang
Published: July 2013

Based on the temperature control characteristics of dry anaerobic fermentation, this system use Siemens PLC and force control configuration software designed a realtime monitoring and control system about the temperature of fermentation. Briefly introduces the hardware structure design, the software design method, the temperature core program on gathering and processing. This system can realize the near manual and automatic operation, remote real-time monitoring about temperature. It has superiority on higher reliability, higher accuracy, stronger real-time property, easier operate.
Design of CAN-Bus Control Modules for Passenger Car
Authors: Meng Hui , Wang Li Qiang
Published: July 2013

The construction scheme of CAN-bus modules on passenger cars is designed in this paper according to the development trend of safety and information intellectualization. The scheme includes functional partition of vehicle, electrical system classification, control unit division, and the assignment of the network ID. In particular, a detail description is given to the position and functions of input and output control modules. Tests have been given by OEMs to prove its practicability and validity.
Control of a Chaotic Semiconductor Laser via Modulating Photocurrent
Authors: Yan Sen Lin
Published: July 2013

A novel chaos-control method of laser is presented by performing a path of photoelectric delayed nonlinear feedback. Two chaos-control models of injected semiconductor laser are studied by modulating the nonlinear and linear photoelectric delayed controllers. Firstly, by periodic modulation of the linear photocurrent under the condition of nonlinear control, the laser behavior can be brought into a dual-period, or multi-periodic state. Secondly, dynamical chaos-control is achieved successfully by switching the controllers.
Process Monitoring and Adjustment Based on Optimal RBF Network
Authors: Yu Jian Li , Zhou Rui Fang
Published: July 2013

Modern complex manufacturing process output data showed high autocorrelation, resulting in the output of the process to deviate from the design target , or that false alarms increasd in traditional control chart in monitoring process. Statistical Process Control (SPC) and Automatic process control (APC) are main methods of industrial processes. Study based on the optimization of radial basis (Radial Basis Funtion RBF) neural network integrated SPC/APC quality control model, the forecast MMSE controller based on optimal radial basis function networks were utilized to adjut process of productive process output, and residual control charts were utilized to monitor process output after adjustment. Results show that optimal RBF network can improve forecast accuracy and adjustment effect, eliminate effectively process output autocorrelation. The residual control chart will in steady state and with small fluctuation. Intergrated SPC/APC quality control model based on optimal radial basis function can eliminate process fluctuation effectively and guaranteeproduct stable quality in process quality control.
A Track Following Visual Navigation Model Car Based on FPGA
Authors: Wang Fu Ming , Zhu Ming Zhang , Ma Hua , Zheng Xin Qian , Lin Yun
Published: July 2013

A novel adaptive track finding algorithm is designed, which combines the function of track finding and image binarization. The combination of these two functions allows the system to determine the binarization threshold adaptively, and perform accurate visual navigation in diverse lighting and track conditions. A circular arc path planning strategy with a single measurable control parameter is used to guide the model car to the track. The circular arc path planning strategy is easy to implement and delivers fast and accurate responses to the track.
Behavior Control of an Automatic Inspection Robot for Insulators
Authors: Li Zhen Hui , Wang Hong Guang , Zhang Hong Zhi , Jing Feng Ren
Published: July 2013

This paper presents an automatic inspection robot for insulators installed on 500kV power transmission lines. In order to detect the poor insulators automatically, the robot’s behaviors are analyzed, and a behavior control model based on Finite State Machine (FSM) is established. Moreover, an exception handling method is proposed based on sensors and timers. The results of experiments in the laboratory prove that the control methods mentioned above are correct and valid. Experiments on a 500kV transmission live line show that the inspection robot can not only automatically move along the double insulator strings with variable intervals, but also reliably handle the abnormal conditions including slipping, power shortage, deadlocking, sensor abnormity, and probe loosening.
Automatic 3D Scene Plugin Designed and Researched
Authors: Tu Jia Qing , Zhang Li Na
Published: July 2013

This paper mainly introduces the design principle for 3D scene automatically generate, as well as how to use Mel language design a Maya plugin that can automatically generate scene.The plugin designed by Mel scripting language, setting the parameters in the plugin interface. The plugin can automatically generate an XML script file, according to create the script expect the 3D scene. The system can help eliminate the cumbersome task of model establishment and set parameters for the 3D designer.
Reconstruction of 3D Building Models Based on Architectural Construction Drawings
Authors: Liang Ming , Hu Zui
Published: July 2013

Reconstruction of 3D building objects from 2D drawings is a vital approach for 3D model reconstructing, and the key is symbol recognition of the architectural construction components in 2D graphics. Existing algorithms of graphics symbol recognition are lack of robustness, scalability and with low recognition ability to deal with graphics transformation. This study constructed Attributed Graph to express the geometrical characteristics, topological relationships and semantic characteristics of architectural drawing symbols uniformly. The recognition approach with Attributed Graph can expand easily and flexibly to deal with rotation transformation and scaling transformation. Considering the semantic mapping from drawings to models systematically, created corresponding mapping mechanism to guarantee robustness of model creating system. Achieve internal and external integration of three-dimensional architectural models automatically, by using 3Dmax modeling script. Import models to GeoDatabase, so as to using the model in 3DGIS application.
Study on Rice Transplanter Experiment Based on Virtual Reality
Authors: Yue Yong Xian , Zhu Zhong Xiang , Chi Rui Juan
Published: July 2013

Similar to other machinery products, numerous analysis and tests would consume large amount of manpower and resources before paddy machinery putting into the mass markets. A method to establish the Virtual Proving Ground (VPG) for paddy machinery is proposed. Parameters stored with model nodes are obtained by collision detection between machine and scene. Motion equations of transplanting mechanism are derived with some simple transformations referring to a rice transplanter. Then working process simulation of the rice transplanter in virtual reality environment is realized by calling functions encapsulated in Vega Prime in a VC++ environment. Moreover some solutions for researching virtual testing are proposed.
Principles of Computer Aided Design in Practice Research
Authors: Šedivý Josef , Hubalovsky Stepan
Published: July 2013

Parametric models are made of a set of mathematical equations. Using a computer can design objects modeling their components with real behavior and attributes. In order parametric models have any validity, must be based on proven or using actual project data. Since there can be many variables of each type, the variables are generally represented by vectors. Typically, a specialist in mechanical design and building design, parametric modeler are aware of the properties of components and interactions between them.
3D Printing Technology—A New Mode of Computer-Aided Style Design in This New Age
Authors: Zhang Jia He
Published: July 2013

In recent years, information technology and network technology of China have much developed, promoting the growth of social economic benefits. Under such circumstances, the matter of how to reduce the cost and bring more benefit remains to be important. 3D printing technology is playing a more and more important role in style design, the construction industry and the art industry. The author has made a deep analysis on 3D printing technology based on her own observation and practice and has made a brief discussion as to how to fully apply 3D printing technology and how to promote computer-aided style design.
Research of Vehicle Driving Environmental Monitoring System Based on Wireless Sensor Network
Authors: Liu Song , Xie Liang Fei , Wei Xin Ran
Published: July 2013

According to the distinguishing feature and requirement of vehicle environmental safety monitoring, the application of vehicle operating conditions monitoring with WSN technology is researched. In this paper, we propose a solution of vehicle driving environmental monitoring based on wireless communication network. Also, we will discuss the data acquisition, transmission technology, and the testing and analysis of applications with the WSN monitoring system we build.
VR-Based Interactive Experienced Platform for Showroom
Authors: Xiong Hong Yun , Guo Fei , Sun Su Rong
Published: July 2013

With the rapid development of information technology and new media technology, the introduction of the experience economy, using the new media interactive tools into industry of real estate has become a very powerful method to increase the value of estate product. The article has used virtual reality technology to design the interactive experienced platform for showroom, realized the whole architecture of the platform, and designed interactive experience of living room, bedroom, kitchen and bathroom in real time. In the platform, users can experience the one-bedroom showroom interactively and as really as possible. Finally, the article has introduced the processes and methods of building 3D model and virtual space model.
Research on 3D Simulation of Regulatory Plan with GIS and Modeling Incubator
Authors: Wang Cheng Wu , Mao Zhi Hao , Lei Jia Qi
Published: July 2013

GIS technology has been applied in city planning management and virtual city. It still hasnt got more substantive achievements on aided design of regulatory plan. The notion of Modeling-Incubator has been advanced and integrated with GIS, which is the key resolution and method to 3D simulation of regulatory plan indexes, such as building coverage, floor area ratio, building interval etc. This resolution will be applied in regulatory plan assessment.
Study on Algorithm for Grid Subdivision and Encryption Based on Technology of Three Dimensional Geological Modeling
Authors: He Wei , Wu Wen Li
Published: July 2013

To achieve 3D grid models which have a non-uniform size and varying properties, we proposed the algorithm of grid subdivision and encryption by human-computer interaction. This algorithm was the technology based on 3D geological modeling, and achieving process has following three steps. Firstly, we converted many 2D cross sections to 3D space, and reconstructed 3D vector models using the algorithm of optimal path suture, and set the property of abnormal body and surrounding rock. Then, achieving 3D grids subdivided according to the relationship between the center of 3D grid and 3D vector models, the properties of 3D grids were determined. Finally, we encrypted grids in the survey area and expansion area, and modified the properties. The results show that the algorithm can realize the conversion from 3D vector models to 3D grid models, and this process is reliable and efficient.
Research on Remote-Sensing Data Syncretizing of Vegetation-Virtual-Reality-Simulation
Authors: Li Xiao Jing , Pan Tong , Liu Ting Ting , Wang Hao Peng
Published: July 2013

Discussed the key effects and basic principles of data fusion of remote sensing for realizing plants virtual reality simulation. Focused on researching and presenting the general methods of data fusion of remote sensing, application interfaces, and 3D visual display of virtual plants. Through the research, the visual display of visual plants will be realized with full remote sensing interfaces of real-time transferring and intervening.
The Application of Sensor Technology in Physical Training
Authors: Xie Xiao Jiao , Xiang Jia Jun , Liu Li Ming
Published: July 2013

We introduced the basic knowledge about sensor technology and its application in physical training. We pointed out the development trend and the problems in the physical training in application by means of examples. We used the three-way acceleration sensor in the springboard diving run-up approach, at the same time, we wish that the sensor technology could be applied better and wider in physical training.
Research on Switching Performance of Static Induction Thyristors
Authors: Zhang Cai Zhen , Chen Yong Gang , Wang Yong Shun
Published: July 2013

Physical mechanism for switching state of SITHs was discussed, the two-dimensional turn-off model was proposed, expressions of ton and toffwere mathematical derived. Measures to reduce the switching time of SITHs, such as reducing the gate width WG and n- region width Wn-, doping Boron atoms with higher density,etc.,were put forward and verified by experiments.
A Novel Method for Onsite Commissioning of Wide-Area Protection
Authors: Shi Jing , Huang Qi , Jiang Zheng Tao
Published: July 2013

The wide-area protection technology is considered to apply in construction of smart grid, which offers new challenge to verifying work for secondary system. This paper describes a new method for onsite commissioning of wide-area power grid. It can accomplish coordination tests for protection devices in different areas based on numerical simulation and wireless commutation technology. Because structure of power grid is too complex to calculate results of electromagnetic transient efficiently. A new approach of simulation is shown in the paper, which uses FDNE circuit to replace external system. And an example of test is offered. The simulation result indicates that electromagnetic transient computation with FDNE can be satisfied with debug work for occurrence chains in smart grid.
Research on Buoy Power Management Technology Based on the Battery Switch Theory
Authors: Zou Guo Liang , Lou Xin Nan
Published: July 2013

The cycle performance and the capacity fading model of 18650 Li-ion batteries and the possibility of dual-battery switching technology applied in marine buoys were studied. The recycling capacity fading data of 18650 li-ion batteries were gained and the data were fit by Matlab cttool toolbox. A fitting curve more in line with the scatters was gained. The number of cycles was calculated when the battery capacity remaining 80%. Then the normal working time and the working time using battery switching theory of a buoy were calculated under that specific number of cycles. The results show that the 18650 li-ion battery capacity fading model adheres more to the power function model than linear function model. Its correlation coefficient reaches 0.9811 and it shows a high fitting degree. The longevity of the battery pack using battery switching technology is 28.79% longer than the traditional single battery pack.
Performance Evaluation of a Gammatone Filterbank for the Embedded System
Authors: Jiang Yi , Zu Yuan Yuan , Chen Xiao , Zhou Hong
Published: July 2013

A structured gammatone filterbank is proposed to decompose the mixture acoustic signal for the embedded system. The performance of the gammatone filterbank with various filter channels is evaluated by signal to noise ratio (SNR), perceptual evaluation of speech quality (PESQ) and automatic speech recognition (ASR) accuracy. As a detailed analysis shown, the gammatone filterbank with 24 channels is good for most embedded applications with a low complex and high performance at the same time.
IP Core Design for Parameterized (2,1,N) Convolutional Encodes
Authors: Duan Mao Qiang , Huang Xiao Li , Yang Zhi Jia
Published: July 2013

In this paper, we design and implement general parameterized IP (Intellectual Property) cores of convolutional encoder with SMIC 0.35μm CMOS technology, serial structure and parallel structure respectively. And analyze each of the power dissipation using Synopsys PTPX tool. The result shows the parallel circuit structure saves 14 percent power dissipation compared to that of serial circuit structure, with the same encode radio. Meanwhile, computing speed of parallel structure with 8-bit parallelism is 8 times than that of serial structure under the same clock frequency. Certainly, serial circuit structure has their particular characters such as easily realized and less resource consumption.
Research of CAN Bus Extension System Based on C8051F500 and SST39LF512
Authors: Bai Gong Ding , Zhao Kai , Gai Jiang Tao , Wu Hong Tao , Yuan Yi , Zhang Zu Zhi , Ma Xiao Feng
Published: July 2013

The transmission system is a core component of the hybrid vehicle. For the stability of vehicle power transmission, the Transmission Control Unit (TCU) must have communications with Vehicle Control Unit (VCU) and operation objects (such as drive motor, battery and so on) by CAN bus at the same time. In this paper, a CAN bus extension system based on C8051F500 and SST39LF512 was designed and completed the correct data sending and receiving, which met the communications requirements in hybrid vehicle control.
Design of Calcium Tester Based on Embedded Technology
Authors: Diao Li Feng , Dai Ming , Zha Guang Dong
Published: July 2013

A design idea of calcium tester based on embedded platform is described. The composition of calcium test system is firstly analyzed. Secondly, in the acquisition of the potential signal of solution concentration the model of a sensor system is introduced. Finally the realization technique of tester is chiefly discussed in hardware and software.
Design on Embedded Processor with Configurable Divider
Authors: Zhang Song , Zhang Yi , Bai Lian Fa , Li Wen Jiang
Published: July 2013

By analyzing Cortex-M3 Instruction Set and AHB Bus protocol, a Cortex-M3 Instruction Set compatible 32-bit RISC embedded microprocessor with built-in an optimized 5+2-stage pipeline was realized in this paper. The performance of the 32-bit RISC processor is optimized by deepening pipeline and optimizing functional modules compared with Cortex-M3. According to division instructions, a configurable hardware divider in different realization ways was realized for different applications. The design of the system architecture was completed using Verilog hardware description language (Verilog HDL) and Top-down methodology. The logic function was corrected by VCS simulation FPGA verification. Design Compiler synthesis result shows that, the maximal dominant frequency of the RISC embedded microprocessor could be up to 95MHz with the 0.18um CMOS process of SMIC, and is improved by 31.94% compared with STM32 Cortex-M3 (72MHz).
Salvage the Post Life of Solid State Disk
Authors: Bu Kai , Xu Hui , Yi Wei , Xie Qi You , Liu Jian Bin
Published: July 2013

The limited use lifetime is a significant drawback of the solid state disk (SSD). When the amount of bad blocks exceeds a threshold, the entire SSD is rendered non-functional as worn out. In this paper, we analysis the post life status of a SSD when its worn out and explain the endurance characteristic induced by Flash charge trap. The real achievable endurance is much more than the threshold endurance defined by the Flash chip manufacturers. Two methods are proposed to salvage the post life. The results show that the SSD could be used as a read-only disk or with the life time extended by 2X at most 6% user capacity penalty.