This paper introduces Modbus-RTU Communication Protocol. Then, based on the analysis of the principle of communication and combining with an instance, the paper gives out a specific method to realize the serial port communication between computer and MCU C8051F020 in Kingview 6.55.

Solar photovoltaic power generation is an important part of the system, and the work efficiency and system capacity is closely related to improving the energy conversion efficiency of the solar cell can increase the utilization of solar energy. Because of the characteristics of solar cells have a number...

The Wavelet transform is a new-style mathematic analysis tool, which is considered as a great breakthrough of tools andmethods recently.This paper introduces the theoretical basis of wavelet transform, clarifies methods of signal de-nosing based on wavelet transform and gives the characteristics of all...

For the existing two-way cable network access technology business single, limited bandwidth, weak anti-interference ability and other characteristics, we proposed a Homeplug AV technology which is based on low-frequency EoC. By EoC comparative analysis, we found EoC technology network adaptability, strong...

This article introduced the applications summary and exploitation experience of Xinyang Power-supplied Company Line Work Area Transmission Line GPS, did an overview of the power GPS GIS and DMS's integration, and brought forward the new ideas of GPS and GIS's application in power field.

In the post-industrial era, American society has undergone unprecedented development. With industrial civilization, human ability of conquering and transforming the nature is increasing while living environment is deteriorating; people's material life is more prosperous, and so is the consumer culture....

The current of three-phase asynchronous motor direct startup will reach 5-8 times of its rated current, causing the decrease of operation efficiency and its PFC, even great damage to the trailer system and the grid. Soft start technology can start as shockless and fluent as possible and then reach its...

Disconnector(DS) operations in GIS may generate very fasttransient overvoltage (VFTO), which is characterized by its high peak value, short rise time, and high frequencies. However,most studies on VFTO are based on statistical data, which cannot show the impact of different phases to VFTO.In this paper,...

This paper mainly introduces microgrid. It is the core of intelligent distribution network. In today's energy shortage situation, microgrid has been widely concerned around the world. It can effectively solve the problem of the impact when the distributed power grid connected to the power grid, which...

With the increasingly complex structure of power communication network and diversified business needs, the demand of performance optimization in power communication network is more and more urgent. Based on complex network theory, this paper proposes a topology optimization algorithm of node betweenness...

On the domestic and foreign electric vehicles, electric vehicle charging technology and planning layout and other aspects of the status quo, and the need for electric vehicle charging analysis. Introduced the domestic and foreign electric vehicle charging facilities, the future prospects for the development...

The author of this paper in the process of detonation possible problems: not accident when explosive accident, when not explosion point or not, the airbag static expansion needed power supply parameters, can be designed for air bag deployment time, adjustable current size parameters of embedded power...

Development of EDA technology has changed the traditional electronic design methods. Widely used in large-scale FPGA and other programmable logic devices, electronic design and software programming becomes as easy and quick. Advances in electronic design technology, but also changed the traditional frequency...

With the continuous improvement of China's economic strength, science and technology to provide a strong guarantee in the future development of our country. In today's science and technology growing, electrical systems gradually become highly integrated, meanwhile, relevant science and technology has...

In the automation and control systems, sensor systems at the head, which is a direct effect on the measurement, and according to certain rules to be measured is converted into the same kind of money or other kinds of output, fast and accurate access to information and can withstand the harsh environment...

With the development of science and technology, the demand for high quality power supply electrical equipment increasing application of analog circuit Control Research and Application Development of power for many years already, but it still has many shortcomings. FPGA as a highly integrated, economical,...

Fourth generation mobile communication technology (4G) have more features than the third-generation standards, the fourth generation of mobile communications technology to provide wireless services in different fixed, wireless internet and cross-nowhere band network, broadband can be anywhere Internet...

With the rapid development of mobile communication technology, 3G mobile communication technology boom has not yet subsided, we have ushered in a more secure, more efficient, faster 4G mobile communications technology. The rapid development of 4G mobile communication systems and channel coding schemes...

Orthogonal Frequency Division Multiplexing (OFDM) technology is a multi-carrier digital modulation technology, in recent years after high-speed digital signal processing chip (DSP) appears, so the advantages of OFDM technology is embodied. DSP technology combined with OFDM, the Fourier transform/inverse...

Energy consumption of the node is one of the most limit of the development of the Wireless Sensor Network(WSN). and it is inevitable, so it's important to design a efficient and recyclable of energy system that to promote the development of the WSN. to the nodes in the WSN, the use of solar energy self...

In accordance with the big size and bulky volume and not easy to carry of ECG monito ring equipment limitations , a new portable ECG collecting equipment of real-time monitoring and low-cost was designed. Compared to the static ECG monitor , the new design has obvious advantages easy to cassy and fit...

With the rapid development of social economy, Science and technology level are increasingly improving, especially accelerated pace of life, People demand for fireproof, anti-theft and anti-gas equipment is greatly increased, and for theft, fire and other accident monitoring and alarm system requirements...

Image Fusion Technology is widely applied in various fields with the continuous development of image sensor technology. This study puts forward an image fusion algorithm based on Pulse Coupled Neural Network (PCNN) and Non Subsampled Contourlet Transform (NSCT). The algorithm does not make simultaneous...

In this paper, a new model developed to estimate transformer vibration is presented. The model contains three parameters-current, voltage and temperature, which can be easily measured. Also, the vibration theory for transformers was analyzed, a six-channel vibration measurement system is set up and the...

for the traditional emergency communication system can not meet the status of emergency communications needs, this article analyzed the emergency communication network and related technical means, and put forward two kinds of wireless ad hoc emergency communication network scheme, in order to provide...

Traditional emergency communication system cannot meet the status of emergency communications needs. In accordance with the requirements of the establishment of a reliable, flexible and robust emergency communication network, this paper introduces in detail the emergency communication network, the design...

Good or bad performance embedded navigation computer system directly affects the accuracy of the navigation system and real-time, in the moment has been more widely used. Papers based on practical engineering application requirements for implementation of embedded computer navigation system were analyzed...

The aerial electric operation vehicle is to meet 10kV and the following live line maintenance work. The insulation system is basically equipped with electric operation vehicle, equipped with one of the most important at the same time. Insulation system including insulation and isolation insulation protection...

A narrow-wall slotted waveguide array antenna with low cross-polarization filter is presented. The horizontal polarization (HP) is the co-polarization for narrow-wall slotted waveguide array antenna, while the vertical polarization (VP) is the cross-polarization. High level cross-polarization reduces...

Traditional off-line line parameters measuring is complicated in operation and has poor applicability. And the symmetry of line parameters influences the choice of on-line measurement methods. Generally, it's is asymmetric. Therefore, the paper proposes an on-line measuring method of power frequency...

In recent years, urban construction sped up constantly,the exterior design of urban lighting system and building attached great importance in order to make the city more bright beautiful. Even if at night,lights are illuminated brilliantly, become city's scenery, moreover many buildings use the glass...

With the rapid development of hydropower, the fault of roto winding inter-turn short circuit of large hydro generator set is more and more obvious. We did the research of fault mechanism of turn to turn short circuit of rotor winding of hydro generator, and concerned the condition of saturation of the...

The paper,taking a Honda SUV vehicle tires as an example,designed a outer rotor 18/12 pole doubly salient permanent magnet wheel motor and briefly introduced the design principles for the motor size and the material selection for the main part of the motor . This paper also used Ansoft software to do...

High performance cluster need to consume lots of power. High power consumption is an important factor that restricts the development of system in both technical and economic ways. The power control technology has become a hot issue in the area of high performance computing systems and data center management....

This appliance falls in CCHP, generating electricity, heating and refrigerating by photo-electronic effect and photo-thermal effect of solar energy. This appliance consist of butterfly mirror, terminal emitting optical fiber, surface light emitting fiber, thermosyphon, water-cooling system, solar cooker,...

The data of the electric power information acquisition system can generate mass data by the accumulation. It is a question to store the data as the increase of sampling frequency. Facing the data properties with large scale and larger gathering density, it will be less efficient if the past technology...

This paper mainly studies the optimization design method of annular slot in the cylindrical resonant cavity. Firstly, we illustrate the microwave resonant cavity perturbation method and radiation power's influence on the cavity; then using HFSS to simulate the radiation power calculation, in order to...

This study examined the possibility to remove color causing-compounds from effluent by pulse electrocoagulation. For better result, this work is focused on the comparison of energy saving effect at different current density, pulse frequencies. During the pulse electrocoagulation experiment using sacrificial...

The occurrence of algae in the water sources is a worldwide environmental health issue. Electrocoagulation/flotation (ECF), as an efficient, safety and environmental friendly algae removal technique without additional chemicals, shows obvious advantages on energy conservation and environmental security...

This study is to develop an outranking method to identify compromised groundwater remediation strategies based on interval-valued grey fuzzy sets in 10-year and 20-year periods under uncertainty. The interval-valued grey fuzzy sets that could quantify the ambiguous nature of subjective judgments, have...

the separation of elements is achieved by ultra performance liquid chromatography system for Aflatoxins, the use of a closed-loop feedback control system is to produce a stable continuous wave light source, fixed wavelength of 360nm illumination light source onto the separation of elements, resulting...

In order to solve the smart home electricity load optimization problem, this paper firstly analyzes the situation of smart home optimization frame and estimates the smart home electricity load model. The electricity load optimization control model is established to achieve the aim of helping smart family...

The BER performance with consideration of phase fluctuation effect in space optical communication is investigated. When the phase fluctuation effect is considered, BER definitely increase which leads to the worse communication quality. Based on numerical simulation, BER is sensitive to the higher level...

This paper designs smart home electricity management system based on power line carrier communication. Firstly, the paper makes the ARM Cortex-M3 as a central controller and ports the uC/OS-II operating system on the ARM, then designs Web Serve program to mornitor and control equipment remotely using...

This paper presents the 4~6GHz 6-bit MMIC digital attenuator with low phase shift. Phase compensation techniques were used in the MMIC design to reduce the phase shift. This attenuator is fabricated with 0.25æm GaAs PHEMT process. Simulation results of the developed MMIC chips in the 4~6GHz show that...

To reduce the amount of measurements, compressive sensing (CS) has been introduced to synthetic aperture radar (SAR). In this paper a novel synthetic aperture radar (SAR) imaging algorithm based on compressive sensing (CS) is proposed. In the range plane, the echo signal is reconstructed in fractional...

On the problem of Global maximum power point tracking (GMPPT) caused by partially shaded in photovoltaic system, many scholars' search methods are always judged by their ability of static search, and dynamic performances when irradiance suddenly changes. But these methods neglect the dynamic performance...

The design is comprised of single-chip computer module, liquid crystal display module, sensor module, clock chip module and speech chip module. Magnetoresistive sensor is responsible for collection of magnetic field strength in specific direction, while clock chip is for calculation of data such as time...

urban power conveying at present most of the use of underground channel and tunnel laying cable transmission, in order to ensure the power transmission of real-time, stability and continuity, we developed a robot tunnel for real-time monitoring of cable tunnel. This paper introduces a hardware solution...

In this paper, a simple and accurate empirical formula is adopted to establish an improved initial value setting model , and a relatively complete initial value setting method is obtained.We use a test search model with equal step size to determine the modulation ratio amplitude range m that has a solution...

The paper has built a wind farm ground on Doubly Fed Induction Generator (DFIG). It proposed a novel strategy of DFIG, which can be as active power source to supply active power to network, and as reactive power source to provide Var compensation (reactive power absorbed or generated) or stabilize voltage,...

In order to get a real-time, comprehensive and convenient monitoring of the state parameters of the electric vehicle, this paper develops a CAN bus parameters analysis system based on LabVIEW. The system, consisting of P-CAN and PC host computer software, is able to collect CAN message which simultaneously...

We designed a balance measure system, which is made up of the test platform and the handhold device. It can measure the movement of the tester's barycenter, and display the track of the barycenter on the screen, then the system can estimate the tester's balance ability based on the track. This system...

RLC components or transistor is identified first. Then through the oscillation circuit turn resistance's, inductance's, capacitance's value into a frequency value by the microprocessor LM3S811 accurately. The transistor is measured by the A/D that can get its parameters.

Design a new photovoltaic grid connection device based on Freescale MK60FN1M0 processor and Multi-mode wireless communication technology. In terms of Modbus protocol, MK60FN1M0 communicates with photovoltaic inverter, the device acquires measurement data such as: DC voltage, DC current, AC voltage, AC...

To solve the difficult problem for the removal of large size sacrificial layers when preparing a terahertz coupler, a new approach is proposed using poly two methyl silicone as a sacrificial layer. Due to its hydrophobicity and high elasticity, cross-linked polydimethylsiloxane (PDMS) can be gently withdrawn...

At present the commonly used energy harvesters have characteristics of low harvester efficiency and short life. This paper presents a micro-energy harvester, the microstructure and collection system are combined to improve the energy efficiency, and optimize the structural parameters to realize the prolongation...

A direct method of designing filter dividers is presented in this paper. The method is based on the filter divider's coupling matrix derived from coupling matrix of the associated filter. Through properly placing the output resonators, in phase or out of phase outputs could be obtained. Examples are...

The traditional droop control has the advantages of low cost, easy to expand, easy to proportional load sharing and so on. But the micro-grid line impedance is resistive, which makes the output power coupling each other .The virtual impedance control strategy can help micro-grid converter to realize...

This paper focuses on partial demagnetization faults (PDMF) in the 6-phase permanent magnet synchronous generator (PMSG) with rectifier load system. In the study, a multi-loop combined with finite element method (FEM) mathematical model is presented. The multi-loop model utilizes transformation matrix...

Under the circumstance of social development, with the rapid growth in passenger travel demand, the demand of development of public transport networks for the urban travel is daily increasing. The service capability of public transport network can't satisfy that all the passengers are able to arrive...

Among the designs of ultra-high-speed analog to digital converter, folding-interpolating structure has great advantages in control of chip area and power dissipation. But the frequency-doubled effect of folding-interpolating ADC will restrict dynamic performances of ADC, such as bandwidth and linearity,...

Considering the uncertainty of wind power generation in the context of the regional electricity market, the risk quantitative index and risk management model for the monthly electricity purchasing plan considering the uncertainty of wind power generation is proposed. First, based on the risk measure...

According to the characteristics of double fed asynchronous generator rotor energy flow, research and design based on the DSP control with two-way flow of energy function of Dual PWM converter and discusses the grid side converter control method of Dual PWM converter in particular. The wind turbine simulation...

Excitation and measurement mode of Electrical Resistance Tomography (ERT) system would determine the sensitivity, information quantity and noise immunity of the test field. In this paper, a 16-electrode ERT system is cited to conduct a research on 8 excitation modes and 2 measurement modes by numerical...

In the electromagnetic positioning system, it was found that with the increase of distance between the target carrier and the emission source, positioning accuracy decreased a lot. This paper proposed a method that used 3-axis accelerometer to assist the electromagnetic positioning system to measure...

IEEE 802.15.3c standard is the first IEEE wireless standard for data rates over 1 Gb/s in 60 GHz band. The dissertation create a simulation system, which adopt the HSI PHY of IEEE 802.15.3c and OFDM modulation method, realize the full process from the transmitter to the receiver. By using three types...

According to the frequency of LTE Band40 from 2300MHz to 2400MHz using for 4G mobile communication distributed by Ministry of Industry and Information Technology of China, a low phase noise, small size and low power consumption voltage-controlled oscillator (VCO) which can be used in mobile phones supporting...

Coal mine blasting equipment library intelligent management to regulate store of blasting equipment through real-time monitoring of blasting equipment storage environment (temperature, humidity, pressure and vibration). Using fingerprint identification to open the door, by computer or mobile phone remote...

Currently, due to the shortage of land resources, the resource development technology increasingly competitive among countries in the world. Our country is also committed to the development and utilization of marine resources in recent years. When working in the deep sea ,underwater exploration devices...

With the increasing demand for network service and rapid development of Wavelength Division Multiplexing (WDM) technologies, Wavelength Routing Optical Networks (WRON) is one of the best ways to realize an all-optical network. Focus on the Routing and Wavelength Assignment (RWA) problem in WRON, a routing...

In the network planning and optimization of mobile communication, cellular signal strength estimate results not only determine the rationality of the planning results, but also affect the quality of the network optimization, so designing accurate signal strength estimation methods is the key problem...

With the rapid development of high-speed railway technology, more and more countries enjoy the convenience which travels with high speed train.Most of the high speed train running on the railway use distributed power technology, the converter on the train get power from traction network to supply the...

In the high power traction driving system, induction motor is widely used with its advantages of strong structure, high reliability and low cost. When the voltage source inverter is used as the driving device of the induction motor and the motor speed exceeds the rated speed, it is required to consider...

Automation control and other consumer devices, industrial control and other fields, external communication interface many devices is still low speed serial port, but the low-speed serial inherent disadvantages: inability to concentrate, comprehensive, accurate and real-time monitoring data, which requires...

This paper is concerned with the design of distributed fusion filter for networked systems with unknown measurement interferences and packet dropouts. A Bernoulli distributed random variable is used to depict the phenomenon of packet dropouts. Without any prior information about the interference, a recursive...

Sustainable buildings have been commonly considered as more expensive than traditional design building. Public has concerned about actual economic return of energy efficient building. This study tries to analyze economical return of sustainable residential building in Melbourne and what is rational decision...

This Paper stars from the basic working principle of PLL, obtains the mathematical model of PLL based on the traditional PLL structure, and analyzes the phase-locked loop tracking performance, acquisition performance, stability and noise performance, and other performances of PLL. This paper describes...

Most controllers used in power system such as PID controllers are based on linearization without considering the external disturbance. In this paper, the disturbance observer is introduced in HVDC control. Firstly, the model of HVDC system considering the disturbance is established. Then disturbance...

Modular Multilevel Converters (MMC) have been widely applied in medium- and high-voltage applications such as High Voltage Direct Current (HVDC) Transmission. Hence, the modulation method which can generate low harmonic waves with low losses is quite suit for the HVDC condition. This paper proposes a...

As the appliance of embedded internet is more and more abroad, the embedded internet technologies have become the focus of the electronics research in the world. This paper discusses the concept and key technologies of the embedded internet, and presents the actual applications of the embedded internet...

Study on the acoustical characteristic is important to speech and speaker recognition in Chinese whispered speech. In this paper, the characteristics of whispered speech are introduced and the acoustical characteristics in Chinese whispered speech are discussed. There is no fundamental frequency in the...

Cloud service has been widely used in people daily life for its convenience and security. In general, there are two sub processes in the course of the interaction mobile devices and cloud servers: data compression and transmission. In this paper, we present a test methodology for evaluating energy cost...

In this paper, we present a novel method that exploits the great parallel capability of multi-cores to speed up the famous Count-Min sketch algorithm. The proposed parallel Count-Min sketch algorithm equally distributes the input data stream into sub-threads which use the original Count-Min sketch algorithm...

The H filter for continuous-time linear systems with measurement losses is studied by using lose ratio. The optimal strategies of the filter are provided and its optimality is proved. Then, the necessary and sufficient conditions of the optimal strategies are solved. Finally, the effectiveness of the...

The principle of using photoelectric sensor to detect the pulse waveform is introduced. A low cost photoelectric pulse detection device is designed, which can improve the pulse detection circuit. In addition, the pulse signal waveform display PC is designed by using C# language, and the pulse waveform...