With the speeding up of China's social development process, the problems of the pupils' education and the construction of the primary school district have attracted people’s attention. This paper is mainly based on a typical primary school in Hefei, Anhui province of China, using GPS tracing to make...

The purpose of this paper is to solve the key problem of the planning of new countryside how to select the central village location. The research methods: The paper takes study town as the experimental subject ,based on the second national land investigation. It determines each evaluating indicator’s...

Data center energy consumption is increasing with the rapid development of data center in recent years. This paper firstly elaborated data center energy saving technologies from three aspects: the power supply system, the air conditioning system and the IT epuipments, then carried on the energy efficiency...

This paper investigates the feasibility of adopting single quantified parameter of atmospheric turbulence effect to evaluate others. To enrich and expand the test method on the transmission characteristics of atmospheric turbulence, this method could greatly reduce both the workload and costs of synthetic...

Gas sensors based on raw multi-wall carbon nanotubes (raw MWNTs) and functionalized multi-wall carbon nanotubes (MWNTs-x) were fabricated on the chromium-silver-gold microelectrode chips by dielectrophoresis process. The positive dielectrophoresis was observed for the particles of carbon nanotubes. The...

As the development of intelligent power system, much importance and requirement have been attached to the load data analysis. In view of the current rough classification of load data, propose a weighted fuzzy clustering algorithm to detail the load classification dividing, which adds a weight distribution...

An experimental platform of parabolic through solar collector is established, and its thermal performance is evaluated. The results show that the receiver tube has an important effect on the system performance, and its performance deterioration will reduce the thermal efficiency. When the outlet temperature...

This paper introduces the equipment-fan filter units (EFU) and analyzes the characteristics. Five modules samples of FFU and EFU are tested on the FFU performance test bench. Contrast shows that, there are significant variations of air velocity uniformity between the two, the central-regional velocity...

Aiming at the issue that the single-phase short circuit current at the 220 kV bus of Chengdu 500kV substation exceeds the three-phase short current or even exceeds the breaking capacity of breaker, the reason is analyzed and the measure that main transformer neutral grounding by small reactance is put...

The real-time identification of sampling data can avoid incorrect action of protection and monitoring device. It is difficult to distinguish abnormal sampling data and electric parameters in system failure for single sampling points. The existence of second derivative of electrical quantity in power...

Based on background of laser atmospheric energy transmission to the UAV application, the impacts of atmospheric refractive on beam deflection is analyzed, and further the attenuation effects of atmospheric molecules and aerosols are discussed. Based on diffraction, turbulence, thermal blooming, optical...

Unbalance phase current appeared in the 500kV overhead transmission line during the system commission of ± 800kV Binjin UHV DC transmission project. An inductor model of parallel lines on same tower was established for theoretical analysis. Electromagnetic transient model was also established in EMTDC/PSCAD....

A strategy of cooperative position estimation is proposed based on the differential control mode of active magnetic bearing (AMB). Given unsaturated magnetic bias, one of the opposing pole pairs must be unsaturated. The unsaturated poles could be tracked by the control current polarity. The position...

With the rapid development of smart grid dispatching and control system in State Grid Corporation of China (SGCC), the complexity of system operation and maintenance increases sharply. In order to improve the maintenance efficiency, SGCC put forward the remote centralized maintenance mode. The centralized...

In the brazing operation, the brazing temperature control is also the difficulty for its time delay and parameter varying. In order to control the brazing temperature, the mathematical model of brazing temperature must be established first. Parameter identification is an effective way to obtain the temperature...

With a view to the fact that the traditional Chinese medicine (TCM) pulse diagnosis learning is difficult, which takes a lot of time as well, and the current pulse simulation device is expensive, it is hard to popularize the device to help the TCM teaching and learning. In this paper, bionics, mechanics,...

In the contribution, the equivalent circuit model of high frequency current transformers (HFCT), used for partial discharge online monitoring or onsite detecting, is established. Next, the major parameters of HFCT are derived and the influences on amplitude-frequency and phase-frequency characteristics...

The Internet of Things (IOT) oriented design of cable partial discharge detection system was proposed. In the novel system, the IOT module supporting ZigBee protocol is adopted and the Z-stack protocol stack is optimized. The system can on-line monitor partial discharge of 30 cables. Experimental results...

The trajectory of HY-3 manipulator is planned using the cubic spline function which is adopted for interpolation of the angle of manipulator’s joint. From simulation experiments, conclusion was drawn that the planned trajectory is smooth and continuous in order to ensure the manipulator running steadily...

In this paper, the working principle of capacity regulating transformer was analyzed firstly. Based on applying the idea of connecting with transition resistance, the mathematical simulation models were established in Matlab Simulink software. According to the simulation calculation under different resistance...

The semi-integrated analysis method was used extensively in the design of offshore wind turbine in China. Recent researches have proved that the wave loads and sub-structure responses have significant effects on the aerodynamic loads of the blades especially in the operation conditions. In order to take...

Transformer for electric energy conversion of the most basic components in power system, is also one of the most widely used electrical equipment, its operation stability, the quality of power supply and technical and economic indicators will be directly related to the working condition of electrical...

Recently, the use of smartphones are growing rapidly and increasing discomfort due to shortages of the battery capacity. Also, consumers are often dissatisfied with the battery life from even the most advanced lithium-ion rechargeable batteries in mobile phone. This paper describes finite element analysis...

Protective relay test devices (PRTDs) are indispensable tools for testing protective relays and other security and automatic equipment. To promote test qualities, it is required that modern PRTDs be able to adapt to different loads, time-variant system parameters, random disturbances and fault waveforms...

Natural gas transported in pipeline is at high pressures. But the pressure of natural gas is needed to be dropped to consumption valves before entering the user side. Available energy from the pressure reduction process of pipeline natural gas has been analyzed in this paper. A power generation and ice...

In this paper, the online analysis framework based on cloud computing is presented, and the numerical calculation types of the power system is summarized. A collaborative computing model is presented on the basis of the analysis and comparison of parallel computing model and distributed computing model....

In order to obtain the maximum power output of the solar cell, the output power should be continuously monitored in real time. Based on the traditional perturbation and observation methods, we propose a new algorithm of maximum power point tracking. The method uses the slope of the P-V curve to determine...

When network voltage drop sharply, if rest energy of wind power system can’t be absorbed effectively, it will affect system security. This paper presents a new protection scheme of Crowbar circuit. Moreover, the effectiveness of realizing the high voltage ride through of DFIG is validated by simulation.

The transient models of wind power generation system and photovoltaic (PV) power generation system are established. The constant power control mode is used to control the photovoltaic system and wind system, which is achieved by controlling DC voltage. And a direct drive permanent magnet synchronous...

With the development of the city, the With the development of the city, the underground space are used in different ways at every city over the world, such us Multilayer basement of high-rise building, subway, underground market, as well as a variety of underground civil and industrial facilities. While...

The vending machine is a kind of commercial automatic equipment that integrates light, machine and light. And it can finish to sell without vendors.Beverage vending machine can be 24 hours in the sale of beverage products without any limitation of place and time. Because it is very convenient and not...

For the monitoring of subway construction and operation safety, early warning and emergency measures, this paper studies the Internet of things(IoT) on safety monitoring of city subway project. This study also include the active smart sensors of city subway IoT and the wireless network composited by...

The problems of current vehicle driving coaching work on the ground subjects is that, the teaching ability of some driving coaches cannot meet the needs of reality the coaching procedures of which are not standard, there is no corresponding coaching simulation system. In view of which, the design and...

Measurement is a very important object of quantum information and quantum computation theory, and an important tool for obtaining quantum information. The development of quantum measurement theory not only plays a very important role in the field of quantum theory, but also gradually penetrates into...

Electrical tomography technology is a kind of process tomography technology. It is accompanied by the development of computer technology and sensor technology. Electrical resistance tomography is a kind of mode of electrical tomography. It has some excellent characteristics that are non-invasive, portable,...

The phenomenon of the soil arch effect of anti-slide pile be discussed. Anti-slide pile resistance effect and soil-pile interaction being analyzed by three-dimensional numerical software FLAC3D With engineering examples as the background to establish numerical model, and considering the pile soil contact...

Based on numerical simulation, the delay of smoke detector alarm was studied in this paper. The air velocity fields and smoke concentrations were introduced in to help to analyze the impact of detector location and air supply velocity on the detector alarm performance. The results revealed that the position...

As an important carrier and effective way to achieve the third industrial revolution, the smart grid, with core features of digital grid, distributed energy systems, information interactive and electric vehicles, is more secure, efficient, economic, and environmental quality compared with the traditional...

The common measurement of discontinuity spacing is to use scanline surveys in field, which is inefficient and fallible. This paper proposes an automatic method to acquire discontinuity spacing based on 3D digital traces model. The results obtained are used to generate a 3D fracture network model and...

In light of the transmission line electromagnetic environment of the increasingly prominent problems, this paper mainly studies the related factors of the transmission lineman frequency electric and magnetic field, using the method of principal component analysis to extract the main factors influencing...

Developed an acoustic imaging system applied in acoustic test. The acoustic array is made up of 260 MEMS microphones and control by a FPGA, which also in charge of transferring data by optical fiber. The mainframe is control by a FPGA. A DSP is in charge of processing the data from acoustic array. Two...

The article put forward a method on forest-cover monitoring based on high resolution remote sensing data of adjacent two year and existing vector data of forest sub-compartment. With the GF- 2 remote sensing image and Rapid-Eye images as the data sources, multi-scale segmentation under the forest land...

With the popularization of smartphone, users are more dependent on it, so the study of reliability assessment of smartphone is becoming a hot spot at present. It makes the problem more noticeable that the development of mobile phone test is slower than its production. So the demand of a reasonable solution...

A new multifunction filter configuration using two CFAs and six impedances is presented in this paper. The proposed circuit can realize the different function using the different impedances. The natural frequency 0 and quality factor Q can be orthogonal controlled, and the quality factor Q can also be...

This paper focuses on how to design the robust beamforming vectors of multiple peer-to-peer relay networks. In the context of imperfect channel state information at the relays, our goal is to minimize the transmit power at relay nodes subject to the quality of service at each receiver. A method based...

Routing is one of the critical technologies in WSNs, and many routing protocols have been proposed in order to achieve the energy efficiency in WSN. Based on CCS, TSC scheme divided the cluster smaller, shorten the chain length and saved more energy than CCS. But the chain is still long which resulting...

Infrared temperature measurement technology is widely used in non-contact temperature measurement field. The designed system adopts infrared measuring temperature sensor of TN series to measure the target temperature and displays the data on the LCD screen with the STM32. At the same time, it combines...

Recent studies have detected the amplitude of spring plant phenology in whole Tibet Plateau and growing season by remote sensing technology. However, few studies have examined that how the plant phenology has changed in the past decade. At the regional scale, we investigated the phenological variations...

Accurate forecasting of wind speed is significant to the safe and stable operation of wind power system. In this paper, a structure optimization method is proposed and used to improve the accuracy of wavelet network wind speed forecasting model. In the training process of wavelet network, grey correlation...

To overcome the limitation of energy supply for artificial cardiac pacemaker, this paper investigated a wireless charging device based on the magnetic coupling resonant wireless transfer (MCR-WPT) technique. We designed the bilayer coupled coils for energy transmission, which had twice power factor than...

Closed-loop controlled electrical drive systems require constant speed without interference, which corresponds to CPLs and performs negative impedance characteristics, so that they have great influence on the stability of aviation power grid. The main purpose of this paper is to solve this problem by...

Power manufacturing enterprises process events by hundreds of devices interacting with their plants. Rich statistical data distilled from combining such interactions in real-time could generate much business value. In this paper, we describe the architecture of HIA, a system for ingesting multiple geographically...

In this paper, multi-sensor technology fusion of internet of things, such as radio frequency Identification(RFID), Beidou navigation satellite system(BDS ), mobile communication, video recognition applied in vehicle management is discussed. In this study, fabricating multi-sensor detector fusion applied...

The X3D is a virtual programming language and the target of it is to establish interactive 3D multimedia. With the emergence of X3D, the virtual reality (VR) is entering the lifestyle of the people as well as multimedia and Internet. 3D scene is described by text message in X3D, which can be transmitted...

We study the regional mutual information to build a powerful and effective no-reference (NR) image quality assessment (IQA) approach. This approach does not need to compute distortion-specific features, but use the features which can distinguish the distortion in images across the distortion types. Such...

Image retrieval is an important topic in the fields of image processing, pattern recognition and computer vision. In this paper, we proposed a new and efficient method of image retreival by combining the color and texture features. We used HSV color histogram for color feature extraction and texton co-occurrence...

Energy coupling realized by separable magnetic pot transformer as new approach of rotor excitation in synchronous machine could replace brushes and slip rings of traditional excitation. For new noncontact energy coupling (NEC) system, its research about energy and efficiency quality still remains a low...

Bus rapid transit (BRT) is an important transit mode in the urban transportation system, especially in improving the urban transit’s operating efficiency. The accessibility of BRT is an important factor to measure its service level, however, most existing methods of calculating the accessibility can...

The meta-synthetic methodology is the scientific and effective way to solve the problems of the complicated large system. In this article, we put forward a Meta-Synthesis Hall based on simulation. Through the Hall, we combined the expert, repository, and simulation test together, building an environment...

Isolated micro-grid makes a great sense of supplying power in the area without large power grid covers. In this paper, an isolated operating micro-grid model is built based on the Matlab/Simulink environment, which contains miniature wind power system, PV system and energy storage system. In order to...

In this paper, a small photovoltaic power generation system based on micro-inverter is introduced. In order to overcome the shortcomings of stand-alone mode and grid-connected mode, an operating method is presented. The system is parallel with the single-phase grid to enable grid-connected operation...

In order to obtain more energy from photovoltaic cells during the inverse process, maximum power point tracking (MPPT) method is adopted in application. Common MPPT methods may cause misjudgment phenomenon, which not only reduce efficiency of PV energy conversion but also may cause grid-connected current...

As the core component of Concentrator-Splitter Optics System, the beam splitter has an important influence on solar energy utility efficiency improvement. The vibration frequency of beam splitter fixed structure caused by external stimulation has great influence on system accuracy. So, it is necessary...

The key branches of power system can effectively reflect the security weaknesses of transmission line, the efficiency of system secure economic dispatch and control will be significantly improved by reducing the system to a precise model with the key branches preserved. A new network reduction method...

Set the expert analysis and diagnose system of the moisture content in SF6.make good use of the manual work blur NN technique and illegibility technique and expert system technique to deal with the illegibility and uncertainty in the course of analyzing of moisture content in SF6 switch and make good...

A compensated voltage model is proposed in this paper, which consists of a second order band pass filter and its compensator. Based on this compensated voltage model, a new flux estimator is constructed. To solve this multiple equilibrium states problem, a method to improve the flux estimator is proposed...

In order to analysis the transmission efficiency of wireless power transmission system via electromagnetic resonant coupling with relay structure, first we build the system model, analyze the relay system power model with couple mode theory, derive the same power change rule compare with non-relay system....

The problem of two-dimension coherent direction of arrival (DOA) for uniform planar array is investigated in this paper. The signals propagate over multipath channel, which thus leads to the coherent source. The traditional two-dimension direction of arrival (2D-DOA) estimation algorithm fails to work...

Because of the limited power and long propagation distance between spacecraft and Earth station, the high power efficiency is more important for space information system than others terrestrial communication system. Motivated by the potentially large gain achievable with iterative decoding, one novel...

How to precisely detect co-channel narrow band interferences using single threshold is a challenge for satellite transponder spectrum monitor, especially in the condition of many signals which parameters are different. A new method for interference detection in satellite communication is proposed based...

This paper describes a system based on the concept of the Internet of Things (IoT) that provides in situ monitoring of coastal soil salinization. The system includes a central control module, as well as modules for communications, the measurement of soil parameters, and power management. The main controller...

Faced with the massive information and data, signal and information processing need to solve the problem of removing redundant information and obtain useful information. The PCA method is introduced, which can detect the effective information in noise. Taking the simulated seismic data as targets, the...

Remote chess game system use the network transmission to let the rival chess image transfor to our own computer.At the same time,the virtual chess pieces that represent our own chess pieces are in the rival chess image.The image on monitor show the two sides of chess pieces real-timely.The detection...

The transfer function is the performance of an optical System’s Imaging quality. It’s an important indicator of an optical system. Detecting the transfer function plays a particularly important role in the project processing and finishing process of the optical system. In order to detect the large caliber...

Instrument and switch nodes are constructed by using virtual simulation tool Multigen Creator, and the method of modeling is introduced in detail. Microsoft MFC is used to initialize configuration of scene simulation, realize of network communication with marine simulator server, receive real-time data,...

In this paper, we analyze the performances of the random linear network coding (RLNC) based wireless broadcasting system, where a source wants to broadcast N packets to a large number of users with uniform distribution. By resorting to stochastic geometry analysis, we deduce the approximate average number...

In order to better research the Grape gene expression data of temporal series, first of all, we built an undirected network by data preprocessing, screening for differential expressed genes, wavelet transform, correlation network analysis, and then carried out a correlation degree number analysis. Finally,...

In this letter we present a novel speech separation scheme using two microphones. The proposed method utilizes the estimation of interaural time difference (ITD) statistics for the separation of mixed speech sources. The novelties of this paper consist in the use of Generalized Gaussian Mixture Model...

With the rapid development of wireless sensor network (WSN), the WSN data gathering is attracting more interests over the years. Due to the high cost of specialized handheld terminals, Android tablets are chosen to design a unified handheld terminal for WSN data gathering. Data are transmitted from WSN...

We implement an assisted positioning system, based on BLE and six-axis accelerometer that includes an accelerometer and a gyroscope. The system uses two on-chip CC254x with BLE features for wireless transmission and MATLAB for the data processing in the cloud. After quadratic integral of acceleration...

This study explores the best model for the quantitative inversion of soil salinity index in an area, and adapts the least squares support vector machines (LS - SVM) regression forecast method. A variety of index inversions is made in serious saline-alkali land in Daqing area, and decision-making method...

State of health (SOH) estimation plays a significant role in battery prognostics. In this paper, Gaussian Process Regression (GPR) is used as a data-driven approach to perform SOH estimation, which supports uncertainty representation and management. At present, the hyper- parameters of GPR are optimized...

A new design of dew point sensitive structure based on a quartz resonant humidity sensor is proposed. The resonant frequency of the quartz crystal is considered as a humidity sensitive parameter in Humidity measurement method. Combined with Peltier module, active condensation occurs in the surface of...