Papers by Keyword: LabVIEW

Abstract: Microgrid can be applied in different locations, relative to traditional power technology. It can improve the reliability of users of electricity and power system operation. Distributed power in microgrid needs real-time and multi-objective optimization management. This paper discusses functions and structure of microgrid energy management system(MGEMS) when connected with the main grid. Problems in long-term and short-term energy management of microgrid are discussed. From the point of view of the software platform, the system structure of MGEMS software are proposed. On this basis, this paper discusses the way to construct modules of MGEMS and their functions.

Abstract: On the basis of the relevant identification theory of pseudo-random code signal, the signals of CSAMT are divided into three parts according to the frequency of the signal. The signals which are susceptible to 50Hz interference signal and its harmonic components should be set by pseudo-random code way. Others are set by single square waveform way. The Control and signal generation software of the transmitter system is built on the advanced virtual instrument platform, LabVIEW. The hardware of the transmitter system is mainly composed of host computer, data acquisition card, high-speed optocoupler, IGBT driver module and four IGBT switches. The data acquisition card generate PWM signals, the high-speed optocoupler isolates low-voltage part and high-voltage part. IGBT drive module and four IGBT switches constitute high-voltage part. Entire transmitter system is suitable for different environments and research tasks, the transmit frequency are adjustable, and the pseudo-random code signal has strong capability to suppress the interference signals. The control software on host computer is simple and clear. There is good prospect for the use.

Abstract: Cloud particle image playback is the supporting software of cloud particle measurement system. It completes image playback and analysis, facilitates cloud and precipitation physics research. It has been implemented by JKI state machine and the queuing mechanism of LabVIEW, and includes three core functional modules, data decompression, 2D image data display and the number of particles statistics. The test pattern data and the real data testing results show that the design meets functional requirements completely.

Abstract: The detection of motor vibration can be used to evaluate the condition of motor. Furthermore the detection of motor vibration can be used to analyze the source of motor vibration and is helpful to reduce the motor vibration. Vibration is a cause of noise,so the vibration reduction is helpful to reduce the motor noise. Through analyzing the mechanism of motor vibration, a laptop computer and LabVIEW software are used to design the experimental system. the data acquisition system of vibration signal is composed of USB5935 data acquisition card, vibration acceleration sensor.LabVIEW is used to detect the vibration signal and record the vibration and realize the spectrum analysis. Through detecting and analyzing the vibration of the permanent magnet DC motor, It is proved that the motor vibration experimental system consisting of computer and LabVIEW can fully meet the requirements of electrical machine test and fault classification research.

Abstract: The AC magnetic susceptibility is a fundamental method in materials science, which allows to probe the dynamic magnetic response of magnetic materials and superconductors. The LAMPS laboratory at the Laboratori Nazionali di Frascati of the INFN hosts an AC multi-harmonic magnetometer that allows performing experiments with an AC magnetic field ranging from 0.1 to 20 Gauss and in the frequency range from 17 to 2070 Hz. A DC magnetic field from 0 to 8 T produced by a superconducting magnet can be applied, while data may be collected in the temperature range 4.2-300 K using a liquid He cryostat under different temperature cycles setups. The first seven AC magnetic multi-harmonic susceptibility components can be measured with a magnetic sensitivity of 1x10^-6 emu and a temperature precision of 0.01 K. Here we will describe in detail about schematic of the magnetometer, special attention will be dedicated to the instruments control, data acquisition framework and the user-friendly LabVIEW-based software platform.

Abstract: Flow characteristic of motorcycle electronic injector is one of the most important factors to determine the electronic control system design, and directly affects the accuracy of fuel control unit of the motorcycle engine. Combined with the LabVIEW software programming, the experiment on research and development of electronic injector could control the lower computer rapidly and conveniently. As well it could accurately obtain the flow characteristics of small injection pulse width and the normal one of motorcycle electronic injector. It will achieve the goal of high efficiency, fast and accurate measurement of flow characteristic of motorcycle electric injector.

Abstract: In view of the geometry, the area of movement and measurement form, put forward the measurement way and method.Laser sensor scans the same area many times in a preset time ,increased the probability of capture the target by optical imaging principle; Tear down analytical expression of the model, system layout by matlab, analysis of the experimental data by Labview. System can satisfy the demand of practical engineering by simple structure, convenient operation, and good stability.

Abstract: The automatic cleaning requirements of spinneret orifices were analyzed. The three-dimensional positioning system for spinneret orifices cleaning, combining the XY horizontal motion platform and Z axis electric translational platform, was determined. The cleaning device of spinneret orifices was designed. The control system of automatic cleaning for spinneret orifices was developed based on Labview and the experimental analysis of the prototype was done in this paper.

Abstract: Water sources in desert areas involved require manual on-site control, decentralized management, At the same time network interruption occurred occasionally. Based on this reason presents a LabVIEW-based network complementary monitoring system. This System achieves field device communication through the RS485 bus, using the Modbus protocol, then, realizes the communication between PLC, Power module Power module and the host PC through the serial port server by a wireless local area network or GPRS. The host computer develops monitoring interface through LabVIEW to achieve network complementary communication. Practice has proved that the system realizes simply, communicates reliably, and has a good expansibility, which has met the needs of remote monitoring of water sources and improved its management conditions.

Abstract: In this paper, introduces a multiplex smart responder based on the virtual instrument technology. The programming language Laboratory Virtual Instrumentation Engineering Workbench (LabVIEW) is used and the NI Educational Laboratory Virtual Instrumentation Suite II (NI ELVIS II) platform is chosen as target device in designing this responder. The control kernel of this responder is LabVIEW program, it can realize lots of functions, such as adjusting question time and answer time, etc. The experiment proves, this responder is advantageous to have short design period, high reliability, easy operation and maintenance, and be helpful for user in the field of virtual instrument technology.