With the rapid development of Internet of things technology, intelligent hardware equipment has become an important part of our lives. It widely exists in the smart router, network cameras, smart home and smart wearable devices. By analyzing the common features of intelligent hardware devices, our research...

Network communication is very important in network transmission.With the continuous improvement of Ethernet technique,the transmission delay of Ethernet MAC(Medium Access Control)will influence communication quality of network.This paper realizes correct send-receive of the Ethernet MAC protocol layer...

With the development of social productivity and the improvement of people's living standard, the development of modern computer technology is more and more fast. In the communication system, the code error detector is the important equipment to detect reliability of communication system, and the traditional...

With the development of power electronic technology, the control technology of power electronic device is becoming more and more complicated. The switching power supply is a indispensable component in modern power electronic equipment. Its quality and size have a direct impact on the whole performance...

Data acquisition technology is a practical electronic technology, which is widely used in signal detection, signal processing, instrumentation and other fields. In recent years, with the continuous development of digital technology, data acquisition technology also presents a characteristic of faster...

The research content of this paper is to design a set of step motor control system which is relative simple, economic, but the function is more complete, adaptable, easy to operate, high reliability, can organically combine electronic technology, SCM technology and motor control technology together....

in this paper, AD5934 and MSP430F169 based on the design of a portable impedance test system, the system uses MSP430F169 as the main control chip, through the I2C control module to complete impedance impedance measurement, and through the buttons to control the operation process and test results through...

With the rapid development of mobile communication service, the construction of mobile communication base station presents the trend of rapid development, the distribution of base station is more and more wide, more and more new requirements are put forward for the maintenance management of communication...

Each port has a same buffer in typical network on chip input ports .Under the condition of the imbalance load in the work ,there will be a port all buffer used and some other ports has many idle buffer .It will reduce the NoC buffer utilization ,then influence the NoC overall performance .In this paper...

Different from the wind energy and solar energy, the hydro-generator is not intermittent energy, which can overcome the disadvantages of wind-mill generator and PV array in microgrid. This paper describes the static experiments, dynamic experiments and the grid-connected tests of low voltage hydroelectric...

In this paper, we analysis and designed an automatic control circuit, which is very impo- rtant for vehicle permitted both automatically controlled and a single LED ,respectively. The results showed the functions that The suction pump works properly can be adjusted with automatic control circuit. An...

In this paper, we first analyze the structure of mixer and analyze its key parts. Secondly, it analyzes the important parameters of mixer, which is helpful to finish the design better. Finally, we pay attention to the particularity of mixer, mixer design, simulation results to meet the design requirements....

A distributed configuration for a broadband amplifier is presented in this paper. broadband amplifier has been realized by 0.2um GaAs process in ADS2011 simulator. amplifier should be designed to trade-off noise figure, gain, bandwidth, and return loss. The aims of design are to provide less ripple variation...

Smooth switching between grid connected and isolated island operation mode is the precondition of safe and stable operation.For photovoltaic system, the PQ control is adopted in the grid/island mode, and the energy storage system, the grid connected mode is controlled by PQ, and the V/F control is adopted...

Observation expansion has brought new requirements for validity, security, stability and integrity of observation data transmission in recent years. Under this background, this paper designs a modularized marine observation data transmission system, describes its overall architecture and software design...

Starting from the point of view of simple and practical, using STC89C52 and low power CMOS type Eý PROM AT24C02 as main control chip and the data memory unit, combined with external matrix keyboard input,1602 LCD, alarm, unlock and other circuit modules to make electronic code lock is introduced in this...

Under the background of national economic development, the application range of electromechanical equipment becomes wider, and electrification degree also improves. Thus, safety of electrical circuit operation receives much attention. But, in the long operation process of electromechanical equipment,...

Based on an introduction on present status of battery management of substations in China, this paper points out problems existing in current battery management of substation, puts forward an active battery management strategy regarding such problems and introduces its implementation framework, principle,...

According to the problem that the intelligence is not high of the soccer robot, using the mechanical theory as a guide, making some mechanical analyses and calculations on the pressure and transmutation states of chip kick mechanics, and conducting optimal design too, then making the structure of chip...

Phasor Measurement Unit (PMU) is more and more concerned in power distribution network due to its great benefit. In near future, it may become an essential device in the modern distribution systems. The Optimal PMU Placement (OPP) problem on transmission network for full system observability, was fully...

This study evaluated the AC parasitic capacitances and turn-off resistance of GaN FETs. Moreover, the study proposes an easily adjustable gate drive circuit appropriate for driving E-mode, cascode, and D-mode GaN FETs in the same driver topology. The proposed gate drive circuit involving only positive...

Liquid metal batteries (LMBs) are cheap and efficient energy storage systems developed in recent years. The large scale applications of LMBs are critical to the utilization of renewable energy and the development of advanced smart grid. This study focuses on the design of grid connection based on LMBs....

This paper analyzed the relationship between the application of EMU and energy consumption ; on the basis of introducing the EMU at home and abroad in detail in this paper, the analysis were done from traction fields and the comparisons of relationship between operation mileage of the EMU , time, speed,...

Digitally controlled permanent-magnet synchronous motors (PMSMs) exhibit bandwidth limitations imposed by delay. In high power applications such as rail transit, the negative impact of delay is particularly serious due to the low switching frequency of the inverter. In this paper, the causes and effects...

In this paper, the transient radiation effect of MOS devices irradiated by pulse laser is studied using TCAD tool. Firstly, the laser radiation model is built up based on the TCAD tool, and also MOS devices model are created and the I-V characteristics are simulated for proving their correctness. With...

The operational planners in power grid companies perform a large number of offline voltage stability studies for a variety of operating conditions. How to effectively determine voltage stability limits from massive amount of offline data has become a challenge for operational planners. This paper applies...

Relying on the northern-hemisphere energy connection, considering the energy implementation, carrying out clean energy alternative is mainly to use the clean energy to take place of fossil energy. Under the green development scenario, this research gives the northern-hemisphere energy interconnection...

By using the semi-tensor product of matrices theory method, this paper studies the Pan Boolean algebra PID control algorithm's conversion problem. It was found that the power computation of n-ary logical structure matrix can be converted into counting its (n+1)-ary structure matrix by its truth table....

It is incidental for current automatic test system (ATS) to lead short of circuits, damage of instruments or units under test (UUT) by reason of its large amount of switches. To solve the problem, the technique of reconfigurable instrument is introduced. Using the reconfigurable instruments as substitutes...

As the OTN (Optical Transport Network) and SDH (Synchronous Digital Hierarchy) network lack the uniform monitoring system to monitor the ever-growing business, this article has presented that use existing TMS to monitor provincial levels transmission network's double plane. While inspected and commanded...

Vibration fault diagnosis of hydroelectric unit was investigated using method of least square support vector machine (LS-SVM) and Dempster-Shafer theory (D-S Theory). Spectrum and amplitude characteristic was acted as eigenvector of learning samples to train the constructed LS-SVM regression and classifier...

Wind power generation is always weather dependent and has the trend of being integrated to power systems as the form of large-scale wind farms, which influences on power systems. Since the power network was not designed specifically to accommodate this type of generation, there are inevitably some points...

Rainfall is a kind of common weather phenomenon. Accurate measurement of rainfall is of great significance for weather and natural disasters forecasting. In this paper, the capacitive sensor was applied to the measurement of rainfall and the working principle was introduced. Furthermore, the output characteristic...

With the rapid development of mobile Internet technology, a electrical emergency repair system is designed based on mobile terminal. The security mechanism of the system is also designed following the principle of appropriate protection, and aim at security defects of mobile internet technological and...

In order to effectively improve the accuracy of fault diagnosis of wind turbine gearbox, a fault diagnosis model based on improved firefly algorithm for extreme learning machine is proposed in this paper. The extreme learning machine overcomes the shortcomings of traditional neural network, such as slow...

In the gearbox temperature monitoring, in order to improve the predictive accuracy of gearbox temperature, we presents a model that improved flower pollination algorithm optimizes wavelet neural network (CITDMFPA-WNN) used in gearbox temperature prediction. Use the model to predict the temperature of...

It expatiates on the design of TMS320F240DSP in wire feeding system which introduces the thoughts of design, hardware and software to the system. And it also presents the application of brushless DC motor in wire feeding system.

According to the actual application of power wireless communication system, wireless network communication in power system mainly hire telecom operators GPRS /CDMA wireless network, it is evolution from 2G to 3G, 4G, and several networks coexist, the power terminal how to deal with the influence of the...

When we use oscilloscopes to observe power waveforms, inverter circuit waveforms and other high voltage signal waveforms through conventional passive probes, there are many risk factors because of grounding problem. However, we can use high voltage differential probe to solve these problems. The key...

In view of the low efficiency and inspecting dead zone of inspecting in 500kV substation, a new inspection method is proposed, which is using UAV carrying multi-sensor detection devices instead of traditional manual inspection and robot inspection. The structure, the composition of obstacle avoidance...

Multi-chip architectures have been a focal point not only in high-performance computing but also in the new generation of embedded systems. For point-to-point topology, high latency and low bandwidth are always found in existing chip-to-chip protocols. This prevents the efficiency of information communication...

RFID technology is the key technologies in the field of IOT, this paper studies the application scenarios of RFID technology in Industry 4.0 incident management, designs an architecture of the Equipment Incident Management System based on cloud platform, improves the traditional ITIL-based Incident Management...

We have made some improvements in the design of its new generation for the first generation of the wireless pressure sensor that has been successfully used [1][2]. The sensor is mainly applied for monitoring air pressure of airbag during the process of operating the ship. As for the design of sensor...

Spectral prediction is the key point of halftone reconstruction study, and has always been a meaningful topic of theoretical study. Taking into consideration the translucency of paper and the non-optical contact between the paper and the backing, this paper analyzes the light scattering effect of halftone...

Analysis by finite element method of laser cutting machine arm static and dynamic, theoretically study the static and dynamic characteristics, and the analysis results are used to correct the finite element model, which can get the accurate model with structural parameters, and then modify the structure,...

Multi-level forecasting of power load is an inevitable demand based on current hierarchical management of our power system. Multi-level forecasting of bus load particularly provides power flow calculation and off-line security check with data support. Aiming at declining the offset of bus load Multi-level...

There is obvious periodic data flow curves of the power integrated service network based on the full use of historical data,this paper makes full use of the historical data, the horizontal and vertical dimensions are extracted from historical data. In this paper, a two dimensional flow forecasting method...

With the deepening of power grid construction, power information and communication network bears more and more business. The introduction of network traffic classification is conducive to the rational distribution of network resources, improve service quality. This paper firstly introduces the requirements...

The propulsion technology of magnetohydrodynamics is considered as the interdiscipline, involving the electromagnetism, fluid mechanics, electrochemistry. The magnetohydrodynamic propulsion device is applied to boats. The boats show the high speed in the quiet mode, and have advantages of concealment,...

With the development of microelectronic technology, the chip performance o FPGA becomes more and more powerful. This paper firstly introduces the concept of FPGA, then analyses three principles the designer must follow, and finally gives the basic flow of the circuit system design based on FPGA configuration...

Quality is the life, is to protect the owner's return on investment can be achieved. Quality is not only related to the project functionality and value, but may also be related to the national interest, the safety of people's lives and property. As the State Grid Corporation of power transmission project...

Temperature is a very popular parameter in flow industry, so temperature control is an emphasis of process control. Fuzzy control is an important application filiation of fuzzy mathematics based on the theory fuzzy sets. This paper firstly analyzes the basic principles of fuzzy control, the structure...

In recent years, with the development of mobile technology,almost all the smart phones and panel personal computers using the ARM architecture, and security issues on this platform arealso getting more and more attention from researchers. Attack of malicious tampering program flow control is one of the...

The dynamic characteristics of squeeze piezo printhead are studied using reduced frequency model for inks with different viscosity. While piezo inkjet mainly applies in paper printing and graphic output, many new applications have emerged in the last few years. These new applications involve inks with...

with the increase in power demand, maximally guaranteeing normal and stable operation of power system has become the key point. HVDC and FACTS contains plenty of high-power electronics, and it has important effect on stable and transient operation of power system. As the member of multilevel converter,...

Based on the study of cutting theory of shearer pick-shaped cutter used in thin seams, cutting tests under different fault conditions were done by using pick on the Cutting Test Bed of the Coal and Rock. The results show that: picking Cutting Torque in the coal seam and small fault interface increases...

Handheld oscilloscope because of its portability, wide application range and other characteristics, has drawn more and more attention in the engineering practice. Anolog-to-digital conversion circuit plays an important role in the design of digital oscilloscope. It directly determines the maximum frequency...

According to the problems of the vibration reliability of pcb in practical, a finite element model was established according to PCB actual parameters,and their first 4-order natural frequencies and modal modes are obtained by modal analysis,and the finite element model which is also helpful for the structural...

Accurate measurement of flow has been used in energy saving, consumption reduction, economic calculation, automatic control and other aspects. In micro flow measurement, measurement method of floater flow plays a very important role. A kind of flow measurement system which is applicable to detection...

Signal processing method is one of important technological bases in the existing fault diagnosis of mechanical equipment, and the degree of accuracy of analysis results is the key factor for whether the diagnosis is successful. Research on spectral analysis is one of the existing main development directions....

Building intelligent systems is the automated control systems of construction equipment. Currently electrical automation technology gets more and more applications in modern buildings. The applications of electrical automation systems in intelligent building includes providing basic survival with plenty...