bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Multi-task Scheduling Algorithm for Integrated Energy Metering Acquisition System
Authors: Xiong Xia , Tao Xiaofeng , Yang Xueliang
Published: December 2019

With the development of the energy Internet and the construction of a new energy measurement system, it is particularly important to promote the remote automatic collection and copying of water, gas, heat and electricity. Based on the electricity information collection system, this paper designs an integrated acquisition technology architecture system for electricity, water, gas and thermal energy measurement, and clarifies the technical route of the energy measurement system. Then, through the analysis of the system task classification, a multi-task adaptive real-time scheduling method based on Spark cluster is proposed, which solves the problem that the collection system has uneven task allocation, long overall task completion time and high priority based on the existing scheduling mechanism of the Spark cluster. The task timeout response causes problems such as poor user experience. Finally, the experimental results show that the total number of 2 million collection tasks are divided into six categories, and the default scheduling methods in the text and Spark are used for comparison. The time-based and priority-critical tasks are completed earlier than the default method. The response speed greatly improves the system user experience and effectively improves the level of social public services.
Application and Consideration of Dynamic Security Identity Authentication in Electric Power Business
Authors: Chen Lei , Gao Xianzhou , Shen Wen , Wang Xiangqun , Tang Yuping , Yao Qigui
Published: December 2019

This electronic document carries out the analysis of mouse, keyboard fingerprint characteristics and online time and user behaviour, establishes user behavior characteristics database and model of electric power business, realizes the identification and account risk control based on dynamic behavior characteristics, improves the account security of the system, and solves the problems. The former security certification method is single, and the ability of security risk prevention and control is insufficient.
An Electricity Inspection System of UHV Transmission Lines based on Beidou Satellite Communication
Authors: Liu Ting , Cheng Lei , Chen Zhiwei , Liu Yan , Liu Kai
Published: December 2019

With the construction and development of UHV power transmission projects in China, safety are becoming increasingly important in the line operation and maintenance. The line operators must verify the electricity status of the transmission line before they carry out the work of maintenance. Due to the characteristics of UHV line, the electricity detection device on UHV line is different from the traditional ones. In this paper, an electricity inspection system based on Beidou satellite communication technology is established by means of non-contact Micro-Electro-Mechanism System (MEMS) electric field sensor. The system includes electricity detection device, handheld inquiry device and monitoring center. Experiments at actual transmission line verified the validation of the electricity inspection system.
Research on Wireless Charging System of Electrical vehicles in Scenery Complementary Expressway
Authors: Cui Wei , Chen Shuyi , Hu Yongqi , Zhou Canzong , Liu Fangwei
Published: December 2019

With the increasingly prominent global environmental and energy issues, the development of new energy electrical vehicles has become more and more important. In order to solve the problem of poor endurance of electrical vehicles, this paper studies the establishment of a wireless charging system for electrical vehicles based on the principle of wind-solar complementarity in the service area of long-distance driving of electrical vehicles, making full use of the environmental advantages of highway areas, and converting light energy and wind energy into electric energy for the use of electrical vehicles to achieve the purpose of electrical vehicles’ endurance.
Simulation Calculation and Experimental Study on Linear Braking Performance of New Energy Vehicles
Authors: Wu Dongsheng , Hu Zongmei
Published: December 2019

The structure and characteristics of the braking system of the new energy vehicle are analyzed. The calculation model of the linear braking performance for the new energy vehicle is established. The parameters such as the adjustment frequency of the solenoid valve and the adjustment amplitude are determined. Finally, the road test is verified. The results show that compared with the road test results, the calculated error is less than 10%, and the model can be used to evaluate the braking performance of battery electric vehicles.
Overview of Cloud Computing
Authors: Qian Lin , Yu Jun , Zhu Guangxin , Wang Lin , Chen Haiyang , Pang Hengmao , Mei Feng , Lu Wenda , Mei Zhu
Published: December 2019

With the development and operation of the Internet, the amount of data generated every day growing bigger, and the demand for data processing capacity is increasing. Cloud computing has become a hot research topic. The core problem of cloud computing is cloud resource scheduling. Current scholars have studied cloud resource scheduling problems from various aspects. This article mainly describes and analyzes cloud resource scheduling based on QoS performance constraints, cloud resource scheduling based on load balancing, and forecasting based on cloud resource scheduling, which provides a useful reference for cloud computing research.
Technology Framework of the Intelligent Command and Control System
Authors: Wang Fan
Published: December 2019

With the rapid application and development of artificial intelligence technology in the civilian field, the research on intelligent combat and command systems in the military field is also intensifying. In order to improve the cognition and decision-making ability of international command and control system, this paper elaborates the overall technical framework of the system, and brings forth intelligent solutions and development suggestions in situation cognition, planning, decision making, and action control.
Substation Sower Supply Area Division Based on Voronoi Diagram and Road Grid
Authors: Yan Yi , Wang Feiming , Zhou Kaidong , Chen Shoumin , Huang Jutao , Wen Bojian
Published: December 2019

On the basis of studying the application of Voronoi diagram, considering the influence of geographical factors such as roads and rivers on the power supply area, the method of substation power supply partitioning combined with weighted Voronoi diagram and road grid is proposed. Firstly, according to the urban road network, the power supply area is divided into several grids, and then the substation is taken as the center. Considering the main capacity of the substation, a weighted Voronoi diagram is generated, which makes the result of the power supply area division more scientific and reasonable. Finally, the actual example proves that the method has certain validity and rationality.
Research on the Overall Framework of the Integrated Power System Fuel Economy Optimization Scheduling Strategy
Authors: Xu Chen , Wang Gang , Xiao Runlong
Published: December 2019

Due to the differences in research objects, operational requirements and control methods, the fuel economy strategies of land-based power systems and traditional marine power systems cannot be directly applied to integrated power systems. Aiming at the energy optimization and regulation requirements of the integrated power system, a fuel economy optimization scheduling strategy model was established. By analyzing the operational requirements of the system under normal and abnormal conditions, the overall framework of the fuel economy optimization scheduling strategy for the integrated power system was established. The generator excitation adopts the master-slave control mode, which realizes the optimal dispatch of the generator output under the overall frame operation demand. Finally, the simulation test verifies the effectiveness of the proposed method.
Simulation of Composite Energy Storage Optimization Configuration of Micro-grid Based on PSO
Authors: Sun Caitang , Zhang Chunxiu , Zhou Sirui
Published: December 2019

The micro-grid studied in this paper contains photovoltaic power generation, wind power generation and energy storage devices composed of super capacitors and storage batteries. Although this method of composite energy storage can effectively utilize new energy sources, the cost is relatively expensive. So, under the condition of normal load and overall normal operation, combined with power balance and other constraints, how to allocate capacity configuration can minimize the overall operating cost of the micro-grid, and improving the economics of micro-grid operation becomes a key issue. In this paper, for the micro-grid with island operation mode, using Matlab to build distributed power model and micro-grid model in micro-grid, aiming at the economical operation of micro-grid, using the basic particle swarm optimization algorithm to obtain the optimal solution, the grid is optimized for configuration and combined with an example for simulation analysis.
Intelligent Path-following Control of Unmanned Surface Vehicles Based on Improved Line-of-sight Guidance
Authors: Niu Guangzhi , Wan Lei , Zou Jin , Zeng Jiangfeng , Fan Jinlong , Sun Chaowei
Published: December 2019

For the way point-based path following control of under-actuated unmanned surface vehicle (USV), a new adaptive compensation line-of-sight (LOS) guidance law and speed solver are proposed, and the fuzzy heading control and integral S-plane speed control are designed. The path following control scheme is based on the separation control, and a speed control is added to improve the overall control structure. For adaptive compensation LOS guidance law, confirm the optimal circle radius of the adaptive LOS method first, and then the angle compensation of heading deviation of navigation is conducted for the LOS angle solved by adaptive LOS method, which is used to guide the USV to approach the desired path with the optimal improved LOS angle. Considering the rapidness of path following, a speed solver is designed according to the distance between the two path points, which can calculate the optimal desired speed of the USV in real time. The experimental results testify the effectiveness and superiority of the proposed guidance strategy, the speed solver and the control strategies.
Digital Power Grid Construction Research of the Cross-regional Core Power Transmission Grid in Southwest China Based on Ubiquitous electric Internet of Things
Authors: Zhou Lin , Sun Li , Sun Wencheng , Wang Jian
Published: December 2019

Digital power grid, as an important foundation for building a strong smart grid, provides the unified data management and service application by integrating multi-source data such as fundamental geography, geologic physiognomy, power grid subjects and projects. It has become an important branch of the “Ubiquitous electric Internet of Things” (UeIoT) construction. Southwest China with a vast territory, has complex terrain and geology conditions. With the orderly advance of the construction of the Ultra High Voltage (UHV) main grid in the area, the power grid data assets have been gradually accumulated. Thus it is necessary to build a digital power grid to solve the difficulty in power grid construction and data asset management. Based on the construction idea of UeIoT, this paper proposes a set of technical architecture for the digital power grid construction of the cross-regional core power transmission grid in Southwest China, and introduces the ideas and application schemes of the digital power grid platform construction.
Better Understanding of Energy Consumption via Energy Information and Management System
Authors: Wang Tao , Zhu Taomei
Published: December 2019

Energy crisis will still be a global issue for long time. Governments at all levels are making more efforts to resolve the energy problems in China. However, conflict between the increasing energy consumption (and demand) in social development and the limited energy resources worldwide. Energy conservation becomes an important objective in all kinds of processes and activities. An information and management system is proposed in this paper, in perticular aiding the industry sector and sub-sectors to understand better the energy data and make better decisions in energy management.
Analysis of E-commerce Marketing Strategy of Power Enterprises in Jilin Province from the Perspective of Economic Transition
Authors: Han Bing , Cui Meng , Xu Dan
Published: December 2019

As a new technical means, e-commerce provides a new idea for the reform of power supply enterprises. At present, the power company is in the context of economic transformation. To create a world-class power supply enterprise, it is necessary to keep track of the world’s advanced management ideas, methods and means, and integrate the various management services of the enterprise into the increasingly becoming an Internet society. Taking the power supply company of Jilin Province as an example, this paper proposes some improvement schemes for the operation mode of the existing power supply system according to the requirements of the power market for power supply enterprises and the advantages of e-commerce. According to the actual situation of the power supply enterprises in Jilin Province, the network model, structure model and database model of the power supply enterprise, as well as the website design scheme of the e-commerce of the power supply enterprise are designed.
Design of Electricity Information Collection System Based on NB-IoT
Authors: Fu Jie , Liu Yupeng
Published: December 2019

Aiming at the problems of two-way information interaction and real-time and reliable transmission caused by the imperfect electricity information acquisition system, this paper proposes an electricity information acquisition system based on narrowband Internet of things (NB-IoT) technology. The system takes STM32 as the micro-controller, and uploads the data of electricity collector to the telecom cloud platform through BC95 wireless communication mode. The user terminal can connect with the cloud platform to realize the collection of electricity information. This paper presents the detailed hardware and software design method of the system. Compared with the traditional electricity information acquisition system, the system has the functions of low power consumption, simple wiring and remote control, and has good application value.
Cyclic Cumulant Based on Communication Signal Multilayer Neural Network Modulation Pattern Recognition
Authors: Guan Qingyang , Zhang Yue
Published: December 2019

After we deduces and simulates the cyclic spectrum theory of MPSK and MQAM modulated signals. The cyclic spectrum of the modulated signal is preprocessed and the original feature set is formed as the input data of the CNN. Feature extraction of cyclic spectrum from convolution and subsampling layers of CNN, so that the modulation signal can be effectively identified within and between classes. The experimental simulation results show that the classification and recognition algorithm of communication signal modulation mode proposed in this paper has better modulation recognition accuracy than other traditional modulation recognition algorithms in the case of low SNR. And when the signal to noise ratio is lower than 5db and higher than -5db, the modulation pattern recognition accuracy can be reached up to 92%.
Research on Smart Grid Energy Internet of Things Technology and Network Security
Authors: Tao Guang , Zhang Qian
Published: December 2019

With the rapid development of smart grid technology, energy IoT technology has become a new direction for the development of power grid enterprises. The energy Internet of Things covers the state of perception, information transmission and intelligent processing of the smart grid, and comprehensively improves the depth, breadth and density of information perception of the grid. The construction of smart grid energy IoT is an important development direction under the smart grid. The article analyzes the technology and network security of the smart grid energy Internet of Things. Based on the characteristics of the smart grid energy Internet of Things and the security risks it faces, the full-scenario network security protection technology adapted to the smart grid energy Internet of Things is analyzed. The suitable intelligence is studied from four aspects: perception layer, network layer, platform layer and application layer. The architecture and content of the full-site network security protection system of the grid energy Internet of Things provides ideas and methods for effectively ensuring the network security of grid enterprises.
Ehicle tracking based on video in fast traffic scenarios
Authors: Liao Zheng , Li Gang , Zhang Xinyue
Published: December 2019

This paper is aiming at the problem of low tracking accuracy of moving vehicles in fast traffic scenarios, the ECO algorithm based on correlation filtering is applied to real-time tracking to achieve stable and accurate tracking of target vehicles. Through the factorized convolution operator, the extracted features are more comprehensive and efficient; the optimization of the training set effectively reduces redundancy; and the more representative correlation filter is used to prevent over-fitting; a simple update model is used to prevent model drift. The experimental results show that the proposed method finally achieved a tracking effect of 97% recognition rate.
Design of Arena Robot Based on STM32 Control
Authors: Sun Taoran , Du Gang , Cui Zhiming , Zeng Cheng
Published: December 2019

In order to design a small arena robot with stage, attack and defense, STM32F103ZET6 micro-controller is used as the main controller. Adopts the modular design thinking, the use of infrared ranging sensors, infrared photoelectric sensor, high-power motor relative to the implementation of the robot movement function; The hardware circuit, mechanical structure and software program are designed respectively. Synthesize the different situations encountered in robot competition, the hardware and software of the robot are optimized and the control strategy is put forward. In this way, the performance of the robot can be brought into full play and the winning rate of it in robot competition can be improved.
Application of IIR Digital Filter with A New LMS Adaptive Algorithm
Authors: Shao Lanchun , He Wei
Published: December 2019

Any system will be inevitably disturbed by noise. The existence of noise affects the processing and application of real signals. How to effectively suppress and eliminate noise has always been a hot spot in the industrial field. In order to design a filter which can properly adjust its parameters according to different environments to obtain the optimal value, this paper designs an adaptive IIR digital filter, and studies as well as improves the adaptive algorithm. A new variable step size LMS algorithm based on multi-scale wavelet transform is proposed in this paper. The wavelet transform domain algorithm belongs to LMS transform domain algorithm and is a new time-frequency analysis method developed, so it has the characteristics of multi-resolution analysis. This adaptive IIR filter designed is applied to suppression and cancellation of noise, and simulation experiments are performed on the MATLAB software platform, so that better illustrating the superiority of this improved algorithm.
Research on the Sampling Procedures for Inspection by Variables When Quality Characteristics Follow the Chi-Square Distribution
Authors: Wang Jingjing , Zhao Jing , Wang Haitao , Zhang Fan , Zhao Chao , Wu Gang
Published: December 2019

In this paper sampling procedures for inspection by variables are discussed under the assumption that product quality characteristics are distributed by chi-square distribution. In the sampling procedure, due to the randomness of sampling, the judgment result may be inconsistent with the actual situation of product quality. That is, when the actual quality of the product is qualified, it is judged as unacceptable (at this time, a type of error in hypothesis testing is made, and we control it to make the probability of making a type of error less than or equal to 0.05). When the actual quality of the product is unqualified, it may be judged as acceptable (at this time, another type of error in hypothesis testing is made, and we control it to let the probability of making a type of error less than or equal to 0.1). In this paper the idea of nonlinear programming is adopted to determine the sampling procedure.
Analysis on Static Performance of Flexible Bearing in Harmonic Reducer
Authors: Zhu Caizhi , Wu Ji , Liu Jun , Zheng Jiaqi
Published: December 2019

The harmonic reducer has been widely used in military, industrial and agricultural fields because of its large transmission ratio, high precision, small backlash, stable transmission and small volume and weight. Flexible bearing is a key component of harmonic reducer, and its static mechanical properties are one of the main factors influencing the fatigue life and load carrying capacity of harmonic reducer. Mathematical model of contact force between rolling element and outer ring is established basing on three bending moment equations. This paper takes the CSF-40-80 flexible bearing with double eccentric arc cam as the research object, the finite element methods (FEM) analysis is used to study the deformation and stress of the flexible bearing under no-load and load. The effect of the double eccentric arc cam eccentricity on the stress is also presented, which provides theoretical support for the optimization of harmonic reducers and the manufacture of high-performance harmonic drive systems.
Texture Tailorable Hierarchical Porous Carbon Monolith with Large Mass Loading for High Performance Supercapacitor
Authors: Jiang Hedong , Ye Xingke , Zhu Yucan , Xie Jianliang , Jia Chunyang
Published: December 2019

In this research, texture tailorable 3-dimension (3D) interconnected hierarchical porous carbon (HPC) monoliths were prepared by a simple method. By regulation of the polymerization rate of furfural alcohol in solvent, 3D HPC monoliths with various textures are obtained. The optimum HPC monolith shows high specific surface area of ∼580 m2 g-1 and desired morphology, texture and pore structure. The HPC monolith with ∼15 mg cm-2 mass loading delivers a high capacitance of 129.1 F g-1 at 0.1 A g-1 and shows high rate capability of 76.9% capacitance retention when the current density increased 50-fold to 5 A g-1. The assembled supercapacitor can drive a toy fan for more than 30 min.
Research on equipment health management system based on PHM
Authors: An Ziliang , Wang Weixin , Chen Taohan
Published: December 2019

Aiming at the safety and health requirements of equipment in chemical machinery field and combining with the current intelligent industrial manufacturing background, a PHM based equipment health management system is developed. Taking 316L stainless steel diffused welding joint of micro and small heat exchanger as the research object, the PHM system framework is designed. The system is divided into six parts: object layer, perceptual transport layer, data layer, analysis layer, recommendation layer and implementation layer. In addition, it mainly analyses test experiment construction, evaluation means, maintenance management, etc., and solves the problem of “Information Island” caused by the separation of processes in the current system.
Analysis of EBD Based on Active Safety Technology of Automobile
Authors: Song Shuang , Chen Zhongyou
Published: December 2019

Recalling the development of automobile safety technology, the development status of active safety technology for automobiles is described.The typical active safety technology of modern automobiles- EBD and other characteristics are analyzed and evaluated.The development trend of automobile safety technology in the future is briefly introduced.
Research on the Influence Law of Driving Experience on Drivers’ Gaze Behavior
Authors: Ji Bingkui , Yao Xueping , Li Mingda
Published: December 2019

To collect the information about driver’s visual features and the manipulation to vehicles, an experiment platform is built based on eye movement tracking device-Smart Eye, GPS, accident recorder equipment etc. We select a typical urban road to test. By analyzing the changes on different experience driver’s visual features at peak and peaceful peak period, find out the change laws of different experience drivers in their driving process. Some theoretical bases are provided for studying driver features.
Parameter Optimization of Doubly-Fed Induction Generator Based on Intelligent Optimization Algorithm
Authors: Zhang Xiangwen , Hua Guanghui , Zhang Yiran , Shi Linjun
Published: December 2019

The doubly-fed wind power generator control system consists of multiple PI controllers, each of which directly affects the dynamic characteristics of the wind power system. In this paper, a particle swarm optimization algorithm with improved inertia weight is used to simulate and analyze the control system optimized by algorithm. It is found that the improved characteristic curve has the advantages of small overshoot, fast adjustment speed and short adjustment time. The effectiveness and superiority of the particle swarm optimization algorithm for PI controller parameters optimization.
Study on the Influence of Electrostatic Force on Collision Efficiency between Micro-Particle
Authors: Gao Zhihan , Jiang Lengjun , Zhang Kai
Published: December 2019

This paper is mainly about the impact of electrostatic forces on the collision efficiency, whinch collision is caused by the internal forces between micro-particles. The Fourth-order Runge-Kutta method is used to solve the dynamical equations of the micro-particle collision. Studies have shown that the micro-particles with the same charge have the same initial velocity, the larger the volume of the particles, the more the charge amount, and the different particle size has a greater impact on the repulsion effect during the collision. That is, the repulsion effect exhibited in the collision between particles is related to the particle size; Micro-particles with different kinds of charges have the same initial velocity, the smaller the volume, the less the charge amount, and the smaller the particle size, the more attractive the collision effect during the collision.
Research and Design of High-Speed Camera Trigger Circuit for Arc Welding Monitoring System
Authors: Jiang Zhiyong
Published: December 2019

Based on the change of current waveform during arc welding short-circuit transition process, a trigger circuit is designed to trigger the shutter of high-speed camera in arc welding monitoring system with the core of FPGA, which can solve the trigger timing problem of the camera, and obtain clear and non-interference photos and videos, which have been verified in experiments.
Adaptive Fuzzy Variable Structure Control for Permanent Magnet Linear Servo System
Authors: Sun Haijun , Yin Weiwei
Published: December 2019

In order to improve the immunity of AC permanent magnet linear servo system to parameter perturbation, end effect and load resistance, an intelligent sliding mode variable structure control scheme based on adaptive neuro-fuzzy inference system ANFIS is proposed. The adaptive neuro-fuzzy inference system ANFIS is introduced into the traditional sliding mode variable structure control to weaken the inherent chattering of sliding mode control and eliminate the end effect of permanent magnet linear synchronous motor. The simulation and experimental results show that the intelligent sliding mode variable structure control method based on ANFIS is simple, has good dynamic performance and good robustness.
Study on bilateral permanent magnetic levitation elevator
Authors: Gao Sumei , Ju Quanyong
Published: December 2019

A two-side permanent magnetic levitation elevator is designed, and the traction motor is a two-side short primary long secondary permanent magnet linear synchronous motor. The structure of bilateral permanent magnetic levitation elevator is designed, and the operating principle is analyzed. The control system of the permanent magnetic levitation elevator is studied. It is concluded that the amount of winding and permanent magnet is less, the manufacturing cost is lower, and it has good controllability.
Research on Key Technology of UAV Low-altitude Photogrammetry
Authors: Guo Nan , Li Yongbin
Published: December 2019

Photographic field control measurement is divided into the measurement of the basic control points of the regional network and the simultaneous measurement of the image control points and checkpoints. The main purpose is to connect the aerial camera coordinates with the ground control points, and then measure the plane according to the mathematical model. The accuracy of the point and elevation points, which in turn reflects the accuracy of the DOM digital product. Image control data directly reflects the accuracy of digital products. Therefore, it is necessary to perform joint control of image points. This paper mainly studies the key technologies of field control point layout and joint measurement, aerial triangulation and digital product generation.
Design of Double Intelligent Parking Garage Based On Fischer Technology
Authors: Yang Shaopeng , Wang Longning , Zhang Yuqi , An Qing
Published: December 2019

[Objective] In view of the ubiquitous parking problems in cities, a new double-deck intelligent parking garage with space saving and intelligent labor saving is designed [Method] Based on the idea of fischer creative technology, a two-layer intelligent parking garage is designed. The design of mechanical system and the production of physical model are completed by fischer model. The human-machine operation panel is compiled by ROBO PRO software. Button - type access mode is adopted, and it has the function of anti - slip and stable operation. At the same time, the optimal path algorithm can save time. [Results] The designed double-deck intelligent parking garage can achieve the expected movement requirements, and can remove the upper layer of vehicles while ensuring that the bottom layer of vehicles do not move. At the same time, the optimal path algorithm makes it a strong guarantee to pick up vehicles quickly. [Conclusion] The two-layer intelligent parking garage designed and built has reached the design requirements. The further improvement is to transform from the model of fischer to the real product, and the problem of load bearing of the parking garage must be solved.
Discussion on Operation Management of Testing Laboratory
Authors: Chen Tianqing , Wang Zhao
Published: December 2019

In order to continuously improve the level of testing through accredited laboratories, customer satisfaction is enhanced to continue to meet the requirements of the laboratory accreditation guidelines. From the aspects of people, machine, material, law, ring and test, the quality management experience generated in many years of work practice is summarized. First, we must start from three aspects of thinking, organization, and normative documents, and continue to strengthen the awareness of quality management; second, increase internal auditing efforts and pay close attention to the implementation of corrective measures; third, implement comprehensive supervision and promote the quality functions of various departments. The fourth is to implement the principle of full participation in quality management; the fifth is to give full play to the leadership role of “top management”. It provides a reference for the management system for continuous improvement of the accredited laboratory.
Research and Software Implementation of Document Service System Based on Cloud Platform
Authors: Shen Shuangyan , Zhu Zebo , Liu Jianming , Zhao Fulin , Liu Chun
Published: December 2019

With the explosive growth of various types of documents, these resources have been collated and utilized to become a concern of the industry. This paper builds a cloud computing platform based on OpenStack, and implements a document service system based on the built cloud computing platform. The administrator can perform state monitoring and management operations on the implemented document service system, and the system user can delete, search and classify the document. This research has greatly improved the use of documents and the level of scientific research.
Effect of Multichannel Signal Sequence on Source Localization Using Convolutional Neural Network
Authors: Zhang Yinquan , Zhang Shuang , Wu Kaiming , Gao Siyu , Li Dong , Liu Jie , Li Guofu
Published: December 2019

In recent years, machine learning has become a promising data-driven method of source localization in underwater acoustics. Several algorithms have been developed by taking advantage of neural networks. This paper investigates the effect of multichannel signal sequence on the performance of source localization using a convolutional neutral network (CNN). In this paper, source localization is solved as a classification problem. The performances of different sequences are demonstrated to be quite different. For a specific CNN, it is revealed that the multichannel sequence affects source localization through influencing the complexity of range classification. The complexity can be reasonably reflected by the conspicuousness of signal differences between adjacent range categories. The two-dimensional (2D) Fourier spectrum of the signal differences provides an intuitive approach to describe the conspicuousness. The multichannel sequence that could induce greater spectral amplitudes has better localization performance in noisy environments.
Test System for the Field Test of Off-Board Charger Electrical Performance
Authors: Wang Ling , Liu Zisheng , Zhao Shuaishuai , Chai Zhichao , Yan Xiangwu
Published: December 2019

With the development of electric vehicles in China, the impact of the electrical performance of electric vehicle charging equipment on electric vehicle battery can not be ignored. A test system for the field test of off-board charger electrical performance is presented in this paper. The test system is composed of hardware devices and control system. The hardware devices include a power module, a load module, a measurement module, and a protection module. The load module uses a lightweight controllable charging load to reduce the weight and volume of test system for field test needs. The control system can control the test process and analysis test data. Taking the stabilized voltage precision test as an example, an off-board charger is tested and the test results are analyzed in this paper.
A Review of Fault Location Methods for Small Current Grounding Systems
Authors: Li Jiapei , Zhang Guoqing , Li Hongbo , Wang Guizhong , Hou Yingwei , Liu Wenlong
Published: December 2019

Small current grounding system is mainly used in China’s distribution network. When single-phase grounding fault occurs in the distribution network, it is important to quickly and accurately select the fault line and locate the fault section to ensure the safe and stable operation of the system. In this paper, the fault location methods for the small current grounding system are described in detail, the advantages and disadvantages of various methods are compared, the main problems existing in the low-current grounding system are pointed out, and the future development direction is prospected.
Study on Microscopic Mechanism of Electrokinetic Coupling under Steady Condition
Authors: Zhang Xiaoqian , Yan Zheng , Guo Qi
Published: December 2019

The flow potential effects in oil-saturated pore medium are widely present in seismic exploration and electrokinetic logging, and the measurement of flow potential effects can be used to evaluate the properties of formations and fluids. In this paper, the momentum equation and current continuity equation that describe fluids in pore medium are adopted, and with the electric double layer theory of oil-water pore medium is combined with. In the capillary model considering the wettability of porous media, the expressions of the electrokinetic coupling relationship of oil-water saturated pore medium under steady conditions are derived, and the influence of electrochemical parameters of oil-water saturated pore medium on the flow potential effect under steady conditions is discussed.
Human Eye Recognition Tracking Based on Region Segmentation and Template Matching
Authors: Li Fei , Zheng Huadong , Huang Jia , Hu Jianbin , Gao Zhifang
Published: December 2019

As a very challenging field, computer vision has always attracted the in-depth exploration and research of many researchers because of its huge development potential. With the continuous improvement of computer performance and the popularity of electronic products, more and more researchers are committed to the important research direction in the field of computer vision - human eye detection. In this paper, the eye in the video sequence is taken as the research object, and the tracking and recognition algorithm of the dynamic object is taken as the main research purpose. The motion tracking of the human eye is deeply studied. Aiming at the existing problems of human eye tracking and recognition algorithms, this paper proposes a human eye tracking and recognition algorithm based on combination of region segmentation and template matching. Experiments show that this method greatly improves the accuracy and stability of human eye recognition.
Numerical Simulation Calculation and Analysis of the Effect of Rocket and Duck Rudder on Its Aerodynamic Characteristics and Flexible Deformation
Authors: Chen Han , Chen Dongyang
Published: December 2019

Based on inertia relief and CFD/CSD two-way coupling methods, the static aeroelasticity numerical simulation of a simply guided rocket with duck rudder actuator has been done, and the influence of duck rudder on aerodynamic characteristics and flexible deformation has been analyzed. Firstly, the lift, drag force and pitch moment coefficients, etc. had been calculated by using CFD method based on SST k-ω turbulence model, the error was less than 10 percent compared with the experimential data, and it verified the accuracy of fluid domain numerical method. Then, the two-way fluid-structure interaction simulation on the rocket and the contrastive analysis were done based on ANSYS Workbench multi-physics coupling simulation platform. The results show that duck rudder has a larger influence on rocket aerodynamic characteristics, by analysing the rocket aerodynamic coefficients under the conditions of without duck rudder, 0° rudder angle and 10° rudder angle, and it shows that the lift force and pitch moment coefficients change 5 to 30 percent with or without duck rudder and angle. Considering the influence of flexible deformation on aerodynamic coefficients, the flexible deformation has a more influence on the lift force and pitch moment coefficients, it reflects that the flexible deformation leads to the lift force coefficients smaller and pitch moment coefficients absolute value smaller, the maximum influence can reach to 5 to 10 percent. Meanwhile, the results show that the maximum deformation of rocket occurred in the middle of the rocket body, and the maximum equivalent stress occurred in the empennage of the rocket. Therefore, in the design of simply guided rockets, it’s very important to consider the influence of duck rudder on the aerodynamic characteristics and flexible deformation.
An Agent Structure Model Suitable for Parallel Computing
Authors: Liu Hao , Zhou Hong , Ma Lei
Published: December 2019

Network communication system will simultaneously deal with a large number of communication incidents in the operation process, so the agent in the software needs to carry on a plurality of tasks at the same time, this will produce a conflict when it call the system resource. Based on the distributed computing model and agent technology, this paper presents a multi-agent parallel computing model based on KM (Kuhn Munkras) algorithm, this model can better solve the conflict between agents multi-tasking and the limited system resource, test experiment proved the effect of this model.
The Impact of Responsible Leadership on Employee Green Behavior: Mediating Effect of Moral Reflectiveness and Moderating Effect of Empathy
Authors: Yang Xiaotong
Published: December 2019

Based on the integrated perspectives of social learning theory and affect event theory, the paper discusses the impact mechanism of responsible leadership on employee green behavior. Questionnaire survey on 317 employees from many enterprises in Shandong Province and Shanghai in this paper, it is found that responsible leadership has a positive effect on employee green behavior, and moral reflectiveness plays a complete mediating role between responsible leadership and employee green behavior. Empathy moderates the negative relationship between moral reflectiveness and employee green behavior such that moral reflectiveness has a weaker negative effect on employee green behavior when employees’empathy is higher. Furthermore, empathy moderates the mediating effect of moral reflectiveness between responsible leadership and employee green behavior, the mediating effect of moral reflectiveness is weaker when empathy is higher. The results of this paper provide a new perspective for understanding how responsible leadership stimulates employee green behaviors, and have important practical significance for strengthening the environmental protection behaviors of organizations.
Design and Implementation of UAV’s Flight Control System Test Platform
Authors: Liu Yang , Tian Xuetao
Published: December 2019

For the test requirements of UAV flight control system, using the virtual instrument, dynamic configuration of software and hardware and database technology, a flight control system test platform with more flexible manual and automated testing platform was designed. This paper describes composition and working principle of the system. Some key technology such as ICD data management, flight instrument simulation displaying, and flight control actuator loading is analyzed and discussed. Through actual use, the platform can satisfy comprehensive testing requirements for the development and production.
The Design of the Phase Transformer Based on Transformation Optics
Authors: Yan Wenyan
Published: December 2019

Based on transformation optics we theoretically propose a design of phase transformer.The arbitrary cylindrical wave to plane wave is implemented by the impedance-matched nonmagnetic slab with the kind of phase transformer. Firstly, indirect transformation method (ITM) is applied to design the transformer, second, the transformer is designed that can convert the cylindrical wave to plane wave directly by ITM. The results are further validated by numerical simulations.
Research on Equipment Defect Management System Based on QR Code
Authors: Qing Ling
Published: December 2019

With the rapid development of information technology, bar code technology is widely used in information collection, logistics and warehousing, power management, and automatic identification technology, which brings huge economic benefits. The two-dimensional bar code has been widely used in various industries and departments because of its large information capacity, high security and high anti-counterfeiting, low cost and easy manufacture, high decoding reliability, and strong anti-loss and error correction capabilities. In the power equipment defect management system, the defect means that it will not cause trouble to the safe and stable operation of the power grid in a short period of time, but it may pose a safety hazard. Therefore, this paper mainly focuses on the research of equipment defect management system based on two-dimensional code. In order to improve the power system equipment, the operation and maintenance personnel can grasp the defect processing situation in time, and timely eliminate and repair the work, which can ensure that the equipment defect problem is tracked. Management without loss, continuous management of defects in poultry equipment, and promoted equipment in a safe, stable, economic operation.
Design of Simulated Small Smart Home System
Authors: Jian Yuanming , Ji Jianbo
Published: December 2019

With the progress of science and technology and the improvement of economic level, people have a higher pursuit of the quality of life at home, thus promoting the rapid development of smart home industry. This paper mainly focuses on the research of smart home system. A smart home system which can provide people with comfortable, safe and convenient home environment is simulated and designed with STC89C52 MCU as the main control chip. The design and operation of the system are simple, convenient, low power consumption, stable performance and low cost, which has certain practical application value.
Analysis of Vibration Characteristic of Single-Phase Three-Limb Transformer under DC Bias
Authors: Jin Shuhan
Published: December 2019

The analysis of vibration characteristic under DC-biasd excitation is a key of improving the safety and reliability of transformers. Based on a vibration experiment of a single-phase three-limb transformer under DC bias, this paper investigate the vibration at different measuring points and analyze the spectrum of the experimental results. The results show that DC bias phenomenon will not only aggravate the vibration of the transformer, but also affect its harmonic content. With the DC current increasing to a certain extent, the speed of displacement increment slows down.
Development and Testing of a Simple Circuit Characteristic Tester System
Authors: Liu Yan , Tang Mingze , Huang Linyan , Zhang Yuang , Zhang Tongtong
Published: December 2019

The simple circuit characteristic tester system is based on circuit construction and design. The system uses the f407 of the STM32 chip as the main control chip, and combines the test circuit and the basic operational amplifier circuit (voltage follower), RC filter circuit, relay control. The circuit and the triode regulator circuit are tested. The system uses a single-chip microcomputer to generate a sine wave (DAC) with amplitude of 0-3.3VPWM and amplitude of 0.1-1V, and then attenuates ten times as an input by the op amp, and performs ADC sampling comparison on a specific part of the circuit to complete the input resistance and output resistance of the circuit. And the gain and frequency characteristic curve at the frequency of 1KHZ. Finally, the system can automatically measure and measure the fault of a given component through programming. The system analyzes and compares the output waveform at a specific circuit as a single-chip microcomputer. The input is then judged by the processing of the microcontroller. In the process of system operation, the OPA2314 operational amplifier is used. The triode adopts the Model 9013. A small capacitor with a value of 100nF is added between the power supply and the ground, which enables the system test to be successfully completed.
Research on Failure Modes and Impact Analysis of Key Electronic Components
Authors: Zhang Wei , Qi Shangmin , Zhang Haomiao , Pan Chenglong , Wang Wenhao , Han Dongjun
Published: December 2019

Analyze the failure mode of electronic components, find the type of stress that causes the failure of the energy meter, trace the key components that cause the fault, and complete the failure mode and impact analysis of key electronic components through failure detection means and failure analysis experiments. In order to develop a reliable product, it is necessary to understand the potential failure mechanism of the product. Modeling to describe the relevant failure modes can promote the development of product design principles. The research results of failure mechanism are not only conducive to improving the reliability manufacturing level of domestic electric energy meter, but also can save the maintenance and transformation cost of electric energy meter, and have very important practical significance for the construction of smart grid.