bluuebunny/crossref_metadata_2025 huggingface dataset:
Bionic Research and it’s Application of Artificial Lateral Line System
Authors: Liu Gui Jie , Gong Hua Yao , Yan Ru , Gao Wen Fang
Published: August 2014

Nowadays, lots of efforts have been made to develop new technology for navigation system of underwater vehicle with the increasingly improved requirements of precise positioning, obstacles-avoidance, energy-saving in locomotion and stabilization in response to turbulent currents. In nature, fish have a great ability to localize prey, school, navigate, rheotaxis, etc. using the lateral-line organ. The biological lateral line system has inspired the researchers’ efforts to artificial lateral lines for applications in underwater vehicles and robots. In this paper, the working mechanism of the fish lateral line system has been described. Then the research status both at biology and at mechanics on the artificial lateral line system at home and abroad has been reviewed. To make a comparison with acoustic navigation system USBL,The key technologies and developing tendency as well as potential applications are described. At last, an insight on the future research directions and route of artificial lateral-line system have been given.
Analysis and Design of Autonomous Remote Monitoring System for Underwater Targets
Authors: Peng Peng Fei , Huang Liang , Zhang Jian Qiang
Published: August 2014

Demands for remote monitoring of underwater targets are analyzed, and the basic concept of autonomous underwater target remote monitoring system is put forward in this paper. The working principle of autonomous underwater target remote monitoring system, the composition of the structure and the overall design of function modules are given. The underwater target detection device is designed in detail.Through the analysis and design of the system, the feasibility and practicability of autonomous underwater target remote monitoring system are fully demonstrated, which has broad application prospects in the water information network construction.It will further improve the detection and reconnaissance capability for remote underwater targets.
Measurement and Validation of the Young’s Modulus of Loudspeaker Spider
Authors: Meng Kai , Zhao Zi Long
Published: August 2014

This paper proposed a set of measurement system based on the method of stick vibration mode and LabVIEW virtual instrument technology, which is used for measuring the young's modulus of loudspeaker spider. The inherent frequency and young's modulus of a cotton spider are measured by this system. After the young’s modulus is obtained, modal analysis is conducted on the sample by using finite element simulation method. The measured results and the simulation results are compared. The difference between two results is 0.4% which verify the correctness of the system.
An Improved Tracking Architecture for Weak GNSS Signal Based on Moving Average Method
Authors: Liu Jun Liang , Wu Hua Bing , He Zai Min , Hu Yong Hui
Published: August 2014

The research of robust tracking GNSS signal has been focused on increasingly in hash environment. In order to tracking weak GNSS signal, what an efficient approach is increasing coherent time. However, increasing coherent time brings several problems. It causes coherent loss and loop stability issues. This paper proposed an improved tracking architecture based on moving average method, a complex loop filter for the architecture is not considered, but the moving average method before frequency discriminator for a frequency lock loop is introduced. Compared with typical tracking loop, the coherent time is different from loop update interval in the method. Increasing the coherent time reduces the output error of frequency discriminator, and the loop noise bandwidth is increased in shorter loop update interval. Hence, use of such type of scheme provides higher dynamics for weak signal tracking. The simulation results are shown to verify the performance of the methods.
Simulation of Ultrasonic Detection of Natural Defects in Weld with Finite Element Analysis
Authors: Chen Han Xin , Yang Shi Qi
Published: August 2014

With the continuous development of the ultrasonic detection technology, ultrasonic time of flight diffraction (TOFD) method has been widely applied. The paper investigated the TOFD technique in the detection of natural defects. TOFD detection experiment is established in Lab. The finite element analysis simulation of A-scan signal and ultrasonic TOFD technique in the detection of the longitudinal arrangement of pores defects within the weld specimen transmission are studied. The feasibility and correctness of the finite element analysis model are verified by comparing the experimental signals with the simulation signals.
Database Design on Physical Function Monitoring System for Sports Training
Authors: Zhang Xue Ying , Chen Li Hua
Published: August 2014

How to implement the system monitoring in the process of athletes training, diagnosis athletes body function scientific, technical characteristics and psychological state, effectively improve the training ability of athletes, prevent excessive fatigue or overtraining, is an urgent problem in the field of sports science. Database design of this paper is to develop function monitoring system on the basic work. Firstly, analyses the process and content of monitoring; Then, the conceptual structure design and physical structure design. Among them, the conceptual structure design using E-R diagram describes the entities and relations; logical structure design the table structure of the athletes category, athletes, physiological indicators, biochemical indicators, morphological function indicators, and other table structure. The content of this paper plays an important role in improving the information management of sport.
CFD Investigation on the Flow Structure inside Cooling Roll
Authors: Song Yan Ming , Yang Yang
Published: August 2014

Cooling roll is a key component in preparation of amorphous alloy ribbon process. The cooling roll rotates at a high speed that causes large centrifugal force on coolant. The reasonable channel structure facilitates the cooling effect and decreases power consumption. Different channel structures in the cooling roll are analyzed in this paper by computer fluid dynamic (CFD) method. The simulation calculated out the pressure distribution and streamline in different channel structure. The simulation results show that flow in case 2 is the optimal in three channel structures. Finally, the structure of the case 2 is manufactured and tested. It is shown that there is no flow block in the channel.
Complex System Testability Analysis Based on Bayesian Networks under Small Sample
Authors: Zhang Xi Shan , Huang Kao Li , Yan Peng Cheng , Lian Guang Yao
Published: August 2014

A lot of prior information in complex system test has been accumulated. To use the prior information for complex system testability quantitative analysis, a new complex system testability modeling and analyze method based on Bayesian network is presented. First, the complex system’s testability model is built using various kind of prior information by Bayesian network learning algorithm. Then, the way of assessing the testability of complex system is provided using the inference algorithm of Bayesian network. Finally, some proper examples are provided to prove the method’s validity.
Fast Computation of Sample Entropy in Forced Oscillation Detection
Authors: Zhu Zhen Shan , Liu Di Chen , Liao Qing Fen
Published: August 2014

Forced power oscillation in power systems has a serious influence to the safe and stable operation of power systems. A fast dynamic sample entropy algorithm is proposed based on sample entropy in this paper. The change of dynamic sample entropy of the tie-line power is analyzed to determine whether the forced power oscillation happened. Case study on the 4-machine 2-area system shows the effectiveness and efficiency of the proposed methodology.
Research on Intelligent Monitoring and Warning System of Expressway Fog Based on ZigBee
Authors: Guan Zhi Guang , Liang Jie , Fan Kai Qiang
Published: August 2014

The highway’s traffic accident often occurred because of the influence of fog and other inclement weather, which caused very big loss to people's life and property. Therefore, all-weather real-time monitoring, analysis and effective early warning to the atmosphere along the highway visibility condition has an important significance. In the paper, the intelligent monitoring and warning system of expressway fog is introduced in details. The result shows that the system has high precision and reliability.
A New Multi-Scale Harris Interesting Point Detector
Authors: Wang Guang Xue , Liu Yong Chun , He Huan
Published: August 2014

The interesting point is important features in images, which is frequently used for image registration, scene analysis, object tracking. Many algorithms for detecting the interesting points have been developed up to now. Among them, the Harris interesting point detector is proved most stable against rotation and noise, while it is also very sensitive to scale change. In order to solve this problem, a new multi-scale Harris interesting point detection algorithm is proposed in this paper. The algorithm consists of two main stages. In stage one, we build a multi-scale representation for Harris measure and find candidate interesting points at each scale level. In stage two, a novel measure is defined to measure the stability of each point. Based on the measure, the final interesting point is selected from candidates. The experiments on both optical and sar data sets have shown that, compared with stand Harris interesting point detector and some other multi-scale interesting point detectors, our algorithm is more robust.
The Soft Measurement of Catalyst Activity in VAc Synthesis
Authors: Meng Hua , Liu Long , Wang Yue Ying
Published: August 2014

Zinc acetate serves as the catalyst in the synthesis reaction of VAc, the activity of zinc acetate will lose with the changes of the using time, temperature, space velocity, molar ratio. For the realization of soft measurement of the catalyst activity, the mathematical regression method and support vector machine (SVM) method are combined to model. By adopting the method of mathematical regression, the main change trend of catalyst activity can be illuminated with the change of response time; The support vector machine (SVM) method is used to amend the main trend to truly achieve the accurate and reliable soft measurement of catalyst activity[1]。The simulation is proceed by the MATLAB to compare to the field datas, the simulation results show that the model established by the mixed modeling approach is high-precision and reliable. The requirements of the soft measurement for catalyst activity in VAc synthesis can be satisfied.
A WSN Clustering Data Acquisition System for Mountainous Orchard Environmental Monitoring
Authors: Li Xiao Hua , Wang Yu Jie , Zhang Ren Long , Nie Juan , Li Yang , Yang Quan Yue
Published: August 2014

Mountainous environment makes the wireless sensor network (WSN) data collection applications remain a challenging domain, as the detection region may present a three-dimensional structure and the radio propagation characteristics are still looking forward to further research. To better adapt to the ecological data acquisition needs in mountainous orchard, A WSN clustering data acquisition system is designed and implemented. It uses the received signal strength indicator (RSSI) to evaluate radio propagation performance and characterize the communication quality of the link. In the selection of the cluster heads and the next routing hops, this system takes RSSI, node’s residual energy and other influencing factors into account and use the multiple-attribute comprehensive evaluation model to weigh them comprehensively. Simulation results indicate that such a design can give objective and reasonable evaluations and judgments of the candidate nodes. Analyses verify the effectiveness and reasonability of the proposed model.
Research on Design of Free Combat Attack and Defense Action Based on Wireless Sensor Motion Recognition
Authors: Wang Nai
Published: August 2014

This paper introduces genetic algorithm in sensor path loss model, improves the target recognition function of sensor, and obtains the sensor target recognition method with relatively high resolution. We use MATLAB software, M function and genetic algorithm toolbox of MATLAB to design the algorithm, and apply sensor target recognition method in the identification of free combat action, and design the free combat movement recognition system based on wireless sensor. In order to verify the effectiveness and reliability of the system, this paper recognizes a set of continuous and rapid transformation of free combat movement, and obtains the curve of action recognition number changing with time, and the continuous action is displayed in the form of visualization. It provides the technical reference for the design of the free combat movement.
Study on Terminal Identification Enhancement Method of Track and Field Using Digital X-Ray Photography Images
Authors: Hu Xiao Lang
Published: August 2014

Due to the development of image segmentation and reconstruction technology, it provides a larger space for development of the image enhancement technology. Under the promoting of the image processing calculation, the capture and recognition function of digital X-ray photography technology are stronger, and the image processing precision is higher. Based on the variation principle, this paper uses the function approximation to improve the X-ray photography image processing technology, and obtains the new boundary value reconstruction condition of X-ray photography. In order to verify the effectiveness and reliability of the mathematical model and algorithm of the boundary value reconstruction, this paper uses MATLAB software and C language to debug the algorithm, and realizes the digital color rendering for the images at the terminal of track and field, obtains the image reconstruction algorithm under different boundary values. It provides a new computer method for the research on image enhancement technology.
Research on Detection of Distribution and Collision of Wireless Sensor Nodes Based on Radio-Frequency Technique
Authors: Zhou Jin Cheng , Yang Zhen
Published: August 2014

many factors need to be considered in layout and distribution of wireless sensor nodes; in addition to the general features of common monitoring sensors, such as economic factors, environmental factors, detection accuracy factor, etc, some particular features should be fully considered, such as intensity, large-scale rapid layout, early warning and monitoring of critical structural components and important areas, as well as its redundancy. Basing on the Modal Energy Method, the paper proposes an optimal sensor layout algorithm available in improvement of modal strain energy method, and such the method is simple and quick, with certain practical value.
Research on Review Spam Detection Based on Sentiment Analysis in Electronic Commerce
Authors: Gong Song Jie , Sheng Qiu Yuan
Published: August 2014

With the wide adoption of the computer and network communication technology in our daily life, electronic business technology has seen a rapid development all over the world. It is common for electronic commerce websites to enable their customers to write reviews of products that they have purchased. Unfortunately, reviewers may write some untruthful opinions in order to promote or damage specific products reputation which called review spam. Product review spam detection makes an attempt to find untruthful opinions. In order to find the review spammers, the paper presents a review spam detecting based on sentiment analysis. Three feature behaviors of review spammers are recognized, including targeting at product type, targeting at product brand and targeting at product seller. The review spam detecting method based on sentiment analysis is suitable for detecting review spam, and is efficient and effective.
Research and Implementation of a Wireless Network Security Inspection Platform for a Power Supply Enterprise
Authors: Chen De Feng , Zhang Wen Yan , Yang Zhi Bin
Published: August 2014

Currently, information security inspection can only be conducted via network scan using a laptop, which results in a low-efficient one-by-one check, and moreover lacks the ability to locate wireless networks and not to mention technical measures to discover hidden networks. With respect to the regulations of a power supply enterprise regarding wireless network security, combined with the operation and maintenance comprehensive supervision system (IMS), and the information extranet security monitoring system (ISS), a cascading wireless network security inspection platform is studied and implemented. This paper describes the wireless network encryption technology, and details the deployment pattern and the work flow, etc. about the wireless network security inspection platform. Experiments show that the platform provides support for the information security supervision work of wireless networks and can effectively safeguard the security of wireless networks in a power enterprise.
Image Classification Recognition for Rock Micro-Thin Section Based on Probabilistic Neural Networks
Authors: Wei Xin Shan , Qin Xiao Hua , Rong Chun Long , Nan Jun Xiang , Cheng Guo Jian
Published: August 2014

In order to implement the recognition automation of rock section pore images, a method combined K-means clustering with probabilistic neural network is proposed and applied to rock thin section images. Firstly, K-means clustering is used as segmentation algorithm, the rock images are divided into two types and extracted enough features and it is shown good classification recognition effect on testing dataset. Secondly, 100 pieces of rock image section are used as validation dataset, including 20 groups, each group has 5 images and 200 data samplings. Experiments show that the probabilistic neural network can be used as rock texture classifier, the average correct classification rate is around 95.12%, which can meet the practical application needs.
Wavelet Transform for Face Recognition Based on Improved Fuzzy C-Means
Authors: Li Xiao Fei
Published: August 2014

The popular approaches for face recognition are PCA and LDA methods. But PCA could not capture the simplest invariance unless information is explicitly provided in the training data and LDA approach suffers from a small size problem. 2DPCA could reduce high dimensional data to a low-dimensional space.2DLDA could extract the proper features from image matrices based on LDA. Ensemble incomplete wavelet analysis method for face recognition is proposed based on improved fuzzy C-Means in this paper. The method proposed shows that it improves the accuracy and reduces the running time.
Wireless Control for Pointolite in Light-Pen CMMs
Authors: Zhang Rui , Liu Shu Gui , Wang Huai Yu
Published: August 2014

A wireless control system for pointolite on the light pen based on TMS320DM642 and CC2530 is introduced in this paper, in order to solve the problem that only pointolite's switch values could be controlled on the light pen in light-pen CMMs, but not lightening time values and brightness values. Through wireless networks of Zigbee, not only pointolite could be switched on or off separately, but also lightening time values and brightness values could be changed by TMS320DM642. Protocols of wired and wireless communication, multipoint answer and error reporting are also given, to improve anti-jamming capability of the system. The experimental result demonstrates that the control success rate could reach 96%, as the wireless modules of TMS320DM642 and the light pen within 8m. So the developed system has high anti-interference capability and could meet expected requirements.
Research on Fm Telemetry Signal Demodulation Based on Instantaneous Frequency Measurement
Authors: Zou Hui Zhi
Published: August 2014

According instantaneous frequency measurement theory, we propose a new PCM/FM telemetry signal demodulation method. This paper introduces the basic principles of this demodulation method and implementation process, the influence of instantaneous frequency measurement accuracy and the impact of factors on the Doppler frequency demodulation performance is proposed to improve the accuracy and instantaneous frequency measurement method demodulation performance. Simulation results show that this method is superior demodulation performance, strong anti-jamming capability, ease of software programming and DSP devices to achieve.
Improved K-Means Algorithm Based on Outliers Detection in Review Spam Filtering
Authors: Ding Zhe Yuan , He Ming Ke , Gao Ming Ze , Li Fang Fang
Published: August 2014

K-means algorithm is common in text clustering algorithm. The traditional K-means algorithm has sensitivity to the initial centers. The result of clustering depends on the initial centers excessively. For different input, the output fluctuated considerably. The K-means algorithm combined features dictionary with density based on outlier detection to detect the outliers in text data. In the first stage, the density parameter is given to all of the data objects using the custom distance function. In the second stage, K-means is used to cluster base on the distribution of density. K data objects are chosen to be the initial clustering centers as they belong to high density area and have the farthest distance for each other. In the third stage, the exception text sets can be identified from the clustering by the outlier detection algorithm. Experimental results show that the proposed approach can efficiently detect outliers in data set.
A Saliency Detection Method Based on Wavelet Transform and Simple Priors
Authors: Chen Jian Kun , Kang Zhi Wei
Published: August 2014

In this paper, we present a new visual saliency model, which based on Wavelet Transform and simple Priors. Firstly, we create multi-scale feature maps to represent different features from edge to texture in wavelet transform. Then we modulate local saliency at a location and its global saliency, combine the local saliency and global saliency to generate a new saliency .Finally, the final saliency is generated by combining the new saliency and two simple priors (color prior an location prior). Experimental evaluation shows the proposed model can achieve state-of-the-art results and better than the other models on a public available benchmark dataset.
Design of Safety Early Warning System Based on Multi-Sensor Data Fusion
Authors: Li Chuan Hua , Yin Jing , Yang Xiao Fang
Published: August 2014

A typical safety monitoring system architecture with basic functions including data collection, parameter setting, data processing and backup, warning judgment and processing is proposed based on analysis of potential safety hazards. With the theories such as T-S model, domain processing and fuzzy control, a fuzzy control model based on multi-sensor data fusion is established, and a safety monitoring system software is developed. Test result shows that the software supports both analog and real-time data, and can perform real-time monitoring of safety parameters like temperature and smoke with satisfactory online hazard warning performance, thus able to be applied in environmental safety monitoring.
Design of Intelligent Dispatching and Monitoring System of Highway Maintenance
Authors: Bai Xiao Song , Yang Jing
Published: August 2014

An intelligent monitoring and control system for highway daily maintenance is described in this paper. To manage maintenance machinery and operators more effectively, geographical information system (GIS), global positioning system (GPS), and wireless communication technologies are applied to the system which consists of three subsystems, detection and maintenance sequence planning system, detection and maintenance monitoring system, and PDA execution system. Maintenance machinery sequence planning system generates routes and schedules for maintenance machinery using GIS and optimization techniques. Maintenance machinery monitoring system monitors current positions of machinery and actual maintenance results as compared with planned sequences, routes and visit times, while PDA execution system transmits information for machinery positions and actual maintenance results using GPS and wireless communication technologies. The intelligent monitoring and control system can promote operation efficiency and reduce maintenance costs.
The Gear Tooth Profile Form of the Mining Truck Wheel Edges Reducer Based on RomaxDesigner
Authors: Li Rong Hao , Yang Jue
Published: August 2014

When the wheel of the wheel edges reducer working, single tooth meshing and bidentate meshing alternately, Gear meshing dislocation, mutation load, speed fluctuations, engaging-in and engaging-out impact will inevitably appear. This paper take the wheel hub reducer based on 60t AC drive articulated dump truck as the research object, use romaxdesigner model and motion simulation analyze the wheel edges reducer. through the analysis obtain the stress and the longevity of gear. According to the simulation results correct the gear for the purpose of improving the bearing capacity of the gear and reducing meshing noise.
Adhesive Structure Acoustic Parameters Measurement and Analysis of SRM Based on Ultrasonic Wave
Authors: Bi Zhou Yang , Chen Jian Hui , Wang Guang Long , YU Chun Hua
Published: August 2014

The multilayer adhesive structure of solid rocket motors (SRM) is studied in this paper. The ultrasonic pulse-echo measuring method was described to measuring multilayer adhesive structure acoustic parameters. The sound velocity of the thermal barrier and cladding layer was measured. The acoustic impedance and acoustic attenuation coefficient was gained by theoretical calculation. A method of equivalent thermal barrier was proposed to analyzing the transmission coefficient and the reflection coefficient. The experimental results indicate that the method of equivalent thermal barrier can simplify the SRM theoretical model of multilayer adhesive structure, and thus it can effectively provide a good help for SRM structure acoustic research.
The Navigation Precision Analysis of the Measurement Ship of Shelter Condition
Authors: Chen Lin , Zhang Sheng , Liu Ming Bo , Luo Yuan Yuan
Published: August 2014

Based on the Analysis of pseudo-range positioning principle and the precision evaluating method, the navigation antenna shelter models of GPS and COMPASS in measurement ship are established. And then the varieties of the geometry dilutions of precision are analyzed in condition of the different shelters. Results show that the geometry dilutions of precision increases due to the large-scaling shelter, the requirement of overlay can’t be satisfied in some region. The overlay ratio of the navigation system will be increased via improving the height of the navigation Antenna location. The overlay of the COMPASS is forecasted and analyzed in shelter condition in order to provide evidences for the measurement ship navigation and follow-up application of COMPASS.
Gear Fault Diagnosis Based on Continuous Wavelet Spectrum Slice
Authors: Huang Meng , Qiu Shi , Yin Xiao Li , Huang Hua Yuan , Cao Jun , Liu Zhen Xing , Fan Cheng Zhou , Li Yan Xia
Published: August 2014

Analysis the common gear fault signal, using continuous wavelet transform well time-frequency characteristics and failure mechanism gear features, combined with quasi-periodic signal rotary mechanical characteristics of the continuous wavelet transform fault signal. This method can reduce the noise source and other incentives interference, remove the specific needs of the signal to improve signal stripping effect, the use of a certain type of gear failures this step, to get a clear diagnosis results show that this method has proven a strong application space.
Dynamic RLS-DCD for Sparse System Identification
Authors: Xia Qing , Lin Yun , Luo Hui
Published: August 2014

In this passage we propose a computationally efficient adaptive filtering algorithm for sparse system identification.The algorithm is based on dichotomous coordinate descent iterations, reweighting iterations,iterative support detection.In order to reduce the complexity we try to discuss in the support.we suppose the support is partial,and partly erroneous.Then we can use the iterative support detection to solve the problem.Numerical examples show that the proposed method achieves an identification performance better than that of advanced sparse adaptive filters (l1-RLS,l0-RLS) and its performance is close to the oracle performance.
The Motor Rotor Fault Diagnosis Method Based on Linear Mixing Blind Separation Model
Authors: Hou Xin Guo , Bu Fan
Published: August 2014

The detection precision of fault diagnosis based on frequency spectral analysis of stator current is easily restricted by noise jamming and frequency resolution. A fault diagnosis method for induction motor based on linear mixing model is proposed to resolve this problem. The fault characteristic signals are separated from the motor stator current by Fast-ICA algorithm and its amplitude is calculated according to the estimated mixing matrix. The fault diagnosis is achieved by difference of the amplitude on the normal state and the fault state of the motor. In this paper, the fault diagnosis of the broken rotor bars faults is used as an example to explain the conclusion as mentioned. Experiment result shows that the broken-rotor-bar fault can be diagnosed by the algorithm with better effect on the condition of short data block.
Application of IPV6 Wireless Sensor Network on Advanced Measuring System for Smart Grid
Authors: Zhao Yan Hong , Tong Jie , Zhai Ming Yue , Li Dan
Published: August 2014

With the rapid development of the smart grid, IP protocol which supports end-to-end application becomes the core of network. Smart meters will become intelligent, miniaturization, multi-functional, precise measurement, interactive and high-speed communication development. Smart meters based on IP protocol must be the trend of the future.IPv6 gradually replacing IPv4 becomes the only choice of deploying IP network. In this paper, we implement AMI system which can achieve real-time management and control. acquire It needs unify deployment of smart meters in the whole building and concentrate them to the gateway by using end-to-end IPv6 wireless sensor network communication protocol.
WSN-Based Intelligent Inspection Monitoring and Positioning System in Substation
Authors: Hu Ai Na , Liu Hao
Published: August 2014

To ensure the staff’s security and supervise their work in order, an intelligent inspection monitoring and positioning system in substation was analyzed. Microwave sensor is used to monitor the high-risk work area in substation. When the microwave start work, the warning equipment will alarm anyone closed to the monitoring work area .The terminal will get the staff’s specific location according to regional positioning algorithm. The system can draw the inspection track and display it in real time. It improves the safety of substation.
Study on the Identification Method of Tool Wear State Based on BP Neural Network Optimized by Genetic Algorithm
Authors: Li Zheng Qiang , Nie Peng , Zhao Shu Guo , Ding Zhang Shun
Published: August 2014

According to the un-stationary feature of the acoustic emission signals of tool wear, a tool wear state identification method based on genetic algorithm and BP neural network was proposed. The method reconstructed the acoustic emission signals and calculated the singular spectrum. And the feature vectors were reconstructed based on the singular spectrum. BP neural network was optimized by genetic algorithm. The weights of BP neural network and the thresholds were optimized originally to get more optimal solutions in solution space. Then the more optimal solutions were put into BP neural network to identify the tool wear state by the optimized classification machine. The study indicated that this method can make an accurate identification of tool wear state and should be widely used.
A New Positioning System for Traffic Accident Scene Investigation Integrated with RFID and WSN
Authors: Song Hong , Tang Jun , Ming Jian Xiong , Duan Wei Jian , Yin Zhi Yong
Published: August 2014

In traffic accident scene investigation, the traditional measuring and positioning methods cannot meet current requirement for efficiency and effectiveness. Which means the Investigators need use tape to measure the distance between accident factors and reference points, and then mark the corresponding elements -- dots, straight lines, curves, closed curves and so on - on the diagram for traffic accident scene investigation. A new radio location system integrated with RFID and WSN has been established to solve the problem. The function of RFID is to clearly mark the ID, attribute and affiliation; WSN to acquire locations of factors from the sensors; ZIGBEE to transmit the combined data (RFID and WSN data) to computers through networks. Using special software to automatically processing the received data for a visualized location map, including the following processes of A) locating survey marks with the geometric algorithm. B) Defining the types of survey marks, such as isolated points, line end points, curve end points, intermediate points etc. C) Classifying the survey marks, such as front wheels, rear wheels, skid marks, body locations, position of fallout etc.
Remote Calibration System in Metering Device
Authors: Ma Wei , Zhang Yu Hui , Xia Zong Ze , Ma Cheng , Liu Yan , Si Ya Dong , Cheng Peng Fei , Sun Feng Wei , He Li Shuai , Liu Chen Yang
Published: August 2014

With the continuous expansion of the grid size, the number of checkpoints metering device is also increased workload and difficulty inspectors also increasing, to carry out verification and monitoring of remote metering devices mark significant. Discusses the remote calibration and monitoring system principle, function and application metering device at checkpoints, and also describes the configuration and functions of the system back-office support software, scientifically demonstrated the remote meter error, PT secondary circuit drop, CT and secondary circuit admittance verification and monitoring of significance.
Research on the Design and Application Based on the Water Treatment System Integrated by PLC and Microcomputer Processor
Authors: Li Xing Shan , Zhao Lu Hua
Published: August 2014

A system of feed-water treatment monitoring and controlling based on the integration of PLC and computer is described in this paper. Its composition, functions, and communication are illustrated emphatically. This kind of water treatment system shows many good performances, such as high precision, reliability, easiness in operation and so on. Its study and application is essential for thermal power plant safe and economic operation.
Cooling Parameters Optimization of H-Beam after Rolling with MOGA
Authors: Ma Jin Hong , Tao Bin , Yao Xiao Han
Published: August 2014

Multi-objective genetic algorithms (MOGA) is broadly used in the engineering problem. . Combined the multi-objective genetic algorithms (MOGA) with finite element method (FEM), a new kind engineering optimization method is established. This optimal method takes fully advantage of the unique feature of genetic algorithms that the optimal solution is achieved by a rapid global search and takes advantage of the unique features of FEM that the computation is accuracy. This method can solve multi-objective problems with more complex constraints in the engineering. The procedure is developed by VC++. Temperature difference of H-beam section has great influence on the residual stress of H-beam. In order to reduce the temperature difference of H-beam and make the microstructure of H-beam uniform, the cooling parameters of H-beam after rolling are optimized. The new kind of optimization method MOGA combined with FEM is used to handle this problem. The better optimization result is obtained.
Software Design of Electro-Thermal Acupuncture Treatment Instrument Based on MCU
Authors: Lin Yu Zi , Yang Bin , Li Yong Xian
Published: August 2014

Electro-thermal acupuncture treatment instrument heats the needle by heat transfer effect, instead of the traditional Chinese thermal needle for acupuncture. It achieves better healing effect on acupuncture points of the human body through the intelligent control of MCU and temperature control device on the needle temperature, vibration frequency, and thermal efficiency and so on. This paper introduces software design of the electro-thermal acupuncture treatment instrument, which is mainly composed of the main program module, temperature acquisition module, timer module, display module, keyboard module and calculation control module. Temperature and vibration frequency of needle body, thermal efficiency, and time of acupuncture are intelligently regulated by MCU, so that treatment effect using electro-thermal acupuncture is better than using traditional Chinese thermal needle.
The Design of Digital Filter Based on DSP Builder
Authors: Hu Xiao Li , Ding Li , Zhang Zhi Gang
Published: August 2014

This paper model digital FIR low-pass by using the Toolbox of the DSP Builder in MATLAB and convert to VHDL hardware description language, compile and simulation through QUARTUS II software automatically, download and verified by EPF10K20RC208-4.The design combine MATLAB software with FPGA hardware organic ally and completes the transplant of the FIR low-pass filter.
The Design of Constant Temperature Quartz Crystal Oscillator for Vehicle-Mounted Radar
Authors: Gong Liang , Xiong Qi , Zhou Shao Hua , Zeng Jiang Ping
Published: August 2014

According to the requirement of the vehicle-mounted radar and taking into consideration of main circuit, amplifying circuit, waveform conversion circuit, automatic gain circuit and voltage control circuit, and other factors of the AT-cut quartz crystal resonator. We designed a small single layer constant temperature high stability crystal vibration for vehicle-mounted radar.
Study on the Residual Stress in the Finishing Rolling Process of Large-Sized H-Beam
Authors: Ma Jin Hong , Tao Bin , Yao Xiao Han
Published: August 2014

Based on the software of Deform-3D , the finish rolling process of H-beam has been simulated. According to the simulation from result , in the finishing process ,the residual stress of large sized H-Beam is mainly caused by uneven deformation. The big deformation exists in web. The flange deformation is only generated in the rolling surface. This uneven deformation leads to big residual stress in rolling piece.
Design of Tunable F-P Filter Driver Based on FPGA
Authors: Han Xu , Wang Peng , Cai Si Wen , Xiong Yan Ling , Zhang Kai Yu
Published: August 2014

The special driver for tunable F-P filter is expensive, so it has an important application value to design a driver with stable performance and low cost. In this paper, the field programmable gate array (FPGA) was chosen as the core chip to constitute triangular signal generator based on direct digital frequency synthesizer (DDS). The output frequency of waveform ROM look-up table will be altered by changing frequency control word. Then, the products of amplitude word and signals of ROM table output were transmitted to DAC to be converted into analog signal. The variable frequency and amplitude modulation signals were got after smoothed by low pass filter. The frequency range of driving signal is 1 Hz~10 KHz, and the resolution of frequency is 0.1 Hz. The amplitude range is 1 V~10 V, and the resolution of amplitude is 0.1 V. The simulation and experimental results show that the driver has the characteristics of simple structure, stable signal, adjustable frequency and amplitude and lower cost. It can satisfy the requirements of tunable F-P filter driven in practical engineering.
Circuit Design Contains a Class of Squared Term Lorenz Family Chaotic System
Authors: Zhang Yu , Tong Chong Lou , Lei Teng Fei
Published: August 2014

A new class of three-dimensional chaotic system is constructed by algebraic methods, which has a similar structure with the classic Lorenz system but contains the square term. The equilibrium point of the system stability is analyzed, and the numerical simulation is carried on the bifurcation diagram and Lyapunov exponent. The chaotic circuit of these systems is designed by using the software of EWB. The results of the experimental simulation verify the existence of the chaotic attractor, which provides theoretical reference to the application of such system.
The Method of the Lead Battery Ultra-Fast Charging Based on Energy Library
Authors: Li Yong Wei , Huo Chao Chao , Ye Zhi Gang
Published: August 2014

According to the difficulties in charging large current problems for lead battery, a charging method based on the energy library was proposed in this paper. The energy library was composed by ultracapacitors as charging power supply.This method can greatly shorten the charging time, improve the efficiency of charge.
The Application of Heat Pipe Heat Sink for High Power LED Lamps
Authors: Ding Xin Rui , Li Yu Ji , Li Zong Tao , Tang Yong , Yu Bin Hai , Yuan Dong
Published: August 2014

LED has been regarded as the next generation lighting source. As for high power LED lamps, heat accumulation will cause a series of problems. Therefore, thermal management is very important for designing a high power LED lamp. Three types of heat sinks are designed by using the finite element analysis (FEA) method for an 180W high power LED lamp. Then the optimized heat sinks are developed and experiments are performed to demonstrate the simulated results. At the same time, the thermal performances with different working angles are investigated experimentally. The heat sink with heat pipe has a better heat dissipation performance than the conventional heat sink under the same input power. The working angles of the lamps greatly influence the thermal performance of each heat sink. For the same heat sink, the temperature varies with different install directions and working angles. Finally, the heat sink with the best thermal performance is recommended. The results have practical significance in designing high power LED lamps.
Loss Compensation in Surface Plasmonic Waveguides with Low Polarization Dependence
Authors: He Hui Fang , Liu Yu Min , Yu Zhong Yuan , Wu Tie Sheng
Published: August 2014

Surface plasmonic waveguides usually only support one mode called TM (transverse magnetic) mode. Recently, one waveguide structure that can propagate both TE (transverse electric) and TM mode was proposed. However, the large propagation loss of the plasmonic waveguides with low polarization dependence is still a problem. In order to make loss compensation to solve the problem, this paper makes improvements to decrease the loss of this kind of waveguide. Simulations have been made to prove the feasibility; as respected, low loss or even 0dB can be reached at both modes when low and high index materials are added. The improved plasmonic waveguide has a potential application in guiding and processing of light from a fiber with a random polarization state in low-loss condition and also can be applied to integrated optics devices.
Integrated Design of Detecting Circuit in Convection-Based Tilt Sensor
Authors: Zheng Yong Hong , Peng Shi Liu , Wang Hong Wei
Published: August 2014

Detecting circuit consists of both a sensing circuit and a compensating circuit. Using digital amplification and filtration, detected signals were input to SCM with high-accuracy data acquisition. SMC substituted for a sensing circuit and a compensating circuit, an integration of design of structure was achieved. Volume of sensor is diminished obviously. Simultaneously, zero drift is decreased under ensuring high sensitivity and resolution ratio. Integrated design also enlarges the range of work temperature, and reduces cost of products.
Optimization Design of Track and Field Line Reconstruction Based on Embedded System
Authors: Yu A Li , Li Yan Wu
Published: August 2014

In this paper, we use the embedded theory and wavelet algorithm to improve image coding, and get a new optimization algorithm of track and field image, and establish the wavelet reconstruction mathematical model of image optimization. In order to verify the effectiveness and reliability of the wavelet reconstruction algorithm, this paper uses computer embedded PLC control system and 317-2 PN/DP special CPU to establish the optimization system of track and field path, and debug a program by using Step7 software, which realizes the calculation function of embedded system. Finally, this paper does wavelet reconstruction on real time image, we obtain the reconstruction wavelet optimal path, and output it in the form of digital image, and use the drawing function to realize re-draw function of image, finally we get the route optimization figure of track and field teaching. It provides a new method for computer teaching process.
Research and Development of New Efficient Instantaneous Hot Water Heaters
Authors: Pan Guo Jun
Published: August 2014

With the improvement of living standards, people's lives have become increasingly dependent on water heater facility. Fast electric water heater is environmental, economic, more convenient than storage water heaters. Compared with gas water heaters, it’s more safe and energy-efficient . This article will introduce a safe and efficient hot-water heaters, through reasonable optimizing its structure so that it can heat the water in the 3s, but by deepening the circuit schematic to ensure the safety function.
Effect of Rectangular Microstrip Antenna with Cross Metal Patches Based on Near-Zero-Index
Authors: Zhang Yan Rong , Wang Ji Jun , Zhu Zhi Pan , Gong Lei Lei
Published: August 2014

In this paper, cross metal patches are inserted inside the conventional rectangular microstrip antenna, and thus it can work at two frequencies. The finite difference time domain (FDTD) method is selected to study effect of this left-handed metamaterial with near-zero-index of refraction. Compared with conventional rectangular microstrip antenna, effect of near-zero-index from positive and negative on conventional rectangular microstrip antenna are studied. Simulation results show this antenna works at two frequencies. Compared with conventional microstrip antenna, near-zero-index can improve antenna’s gain obviously.
The Parameters Matching and Simulation of Pure Electric Vehicle Composite Power Supply Based on CRUISE
Authors: Zhou Mei Lan , Wei Lin , Wen Jia Bin
Published: August 2014

Pure electric vehicles develop rapidly all over the world. According to building the model of pure electric vehicle in the CRUISE software, first the power supply system parameters are designed and simulated, and then the power performance and feasibility of the model are verified. The design of CPS (composite power supply) which combined UC (ultra capacitor) with Li-B (lithium battery) can extend the life of the Li-B, and protect the Li-B in some way. Under the NEDC operating condition, the simulations of the SPS (single power supply) and the CPS are taken. The result shows that the variation of the Li-B SOC decrease by 8%, compared the CPS system with the SPS system, the comprehensive energy consumption economy is 6.25%.
A Study on the Parameter Matching and Optimization of FCV Powertrain
Authors: Liang Xiao , Lu Ye , Liang Wei Ming , Liu Fen
Published: August 2014

This article take powertrain system design of fuel cell electric vehicle (FCV) as researching object, focus on parameter matching and optimization of powertrain system for FCV, and makes parameter matching and optimization of powertrain system for a fuel cell vehicle.
Design of Simulator on Downward Unified Carrier Signal
Authors: Liu Yang , Fu Gang , Zhu Dong Xu
Published: August 2014

This article through to the Rayleigh channel, les channel and all shadows channel features such as research, put forward the suitable for unified measurement and control system design scheme of downlink signal simulation, by changing the module can be effective simulation of measurement and control environment. The implementation of the system to evaluate the working state of the receiver, troubleshooting, and provided an important tool to find the accident reason.