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TARGET. The purpose of this work is to develop a non-contact laser control and measuring complex (LCMC) for vibration control of the level of pressing of windings and magnetic circuit of a power transformer. A laser vibrometer is used as a measuring element, the developed software in the LabVIEW graphical programming environment serves as a tool for processing vibration signals. The technical condition of the power transformer is analyzed by the amplitude spectra of the vibration of the tank of the transformer under study, formed using the fast Fourier transform algorithm in the LabVIEW software.METHODS. The vibration control method makes it possible to control a power transformer during its operation under voltage, which makes it possible to move from a planned system of transformer repairs to a system for taking out for repair according to the current technical condition.RESULTS. The developed LCMC allows to carry out non-contact measurements of vibration parameters of a power transformer under voltage and to establish the current level of pressing of windings and magnetic circuit.CONCLUSION. The developed LCMC with software allows contactless control of the technical condition of the magnetic circuit and the windings of the power transformer according to the amplitude-frequency characteristics of the vibration parameters, as well as the use of statistical methods for processing and analyzing signals received from the transformer.

Проблема створення інструментальних засобів для спрощення коректного використання статистичних методів досліджень залишається актуальною, особливо в біомедичній галузі, де фахівці не надто володіють математичним апаратом. В статті запропоновано реалізацію в програмному середовищі NI LabVIEW напівавтоматизованої системи, що забезпечує найчастіше використовувані засоби статистичного аналізу, але при цьому виконує перевірку необхідних критеріїв і меж їх використання, а також обирання відповідних статистичних методів в автоматичному режимі. Реалізація в програмному середовищі NI LabVIEW забезпечує легке підключення до апаратури, універсальність та простоту подальшої модифікації алгоритмів роботи.

espanolresumen Objetivo: Medir la eficiencia instantanea de un colector solar de placa plana, empleando un arreglo experimental configurado en instrumentacion virtual. Metodologia: A partir de un montaje experimental desarrollado bajo la arquitectura de instrumentacion virtual, que emplea un colector solar, modulos Compac FieldPoint de la firma National Istruments, y sistemas de adquisicion de datos, disenados a partir del lenguaje de programacion grafica LabVIEW, para medir radiacion solar global, temperatura ambiente y temperatura del fluido del sistema, se obtiene la eficiencia instantanea del colector solar. Resultados: Se reportan medidas de eficiencia de un colector solar de placa plana, en funcion de la temperatura reducida del sistema, de la hora del dia y de la radiacion solar global para dias caracterizados por la epoca de la medicion y acorde con el flujo de radiacion solar global que incide sobre el colector. Conclusiones: El uso de un instrumento virtual y de dispositivos de alta rapidez y sensibilidad para la adquisicion de datos permite medir los parametros de operacion y la eficiencia instantanea de un colector solar de placa plana tipo aleta, obteniendo un valor de promedio del 36,6 %. Financiamiento: El Centro de Investigaciones y Desarrollo Cientifico de la Universidad Distrital Francisco Jose de Caldas financio el software LabVIEW, los modulos Compac FieldPoint y el sensor de radiacion solar, en el marco de la realizacion del proyecto de investigacion titulado “Desarrollo y prueba de prototipo de estacion de medicion de senales que dan informacion de variables ambientales”, por el grupo FMAES. Englishabstract Objective: To measure the instantaneous efficiency of a flat plate solar collector, using an experimental arrangement configured in virtual instrumentation. Methodology: The instantaneous efficiency of the solar collector is obtained from an experimental setup developed with the virtual instrumentation architecture, which uses a solar collector, Compac FieldPoint modules of the National Istruments firm and data acquisition systems, designed from the LabVIEW graphic programming language, to measure solar radiation global, ambient temperature and system fluid temperature. Results: Efficiency measures of a flat plate solar collector are reported, depending on the reduced temperature of the system, on the time of day and on global solar radiation for days characterized by the measurement time, and in accordance with the global solar radiation flow, that affects the collector. Conclusions: The use of a virtual instrument and devices of high speed and sensitivity for the acquisition of data allows measuring its operation parameters and the instantaneous efficiency of a solar collector of flat plate, obtaining a value of 36.6%. Financing: The Research and Scientific Development Center of the Francisco Jose de Caldas District University financed the LabView software, the Compac FieldPoint modules and the solar radiation sensor, within the framework of the development of the research project called “prototype development and testing of signal measuring station that provides information on environmental variables”, which was developed by the FMAES group.

Проблема спілкування з оточенням паралізованих пацієнтів, які втратили мову, залишається актуальною в наш час, хоча з’явилися потужні технічні засоби і навіть використовуються небезпечні інвазивні технології. Будь-які додаткові можливості створення каналів спілкування покращать життя таких пацієнтів, а отже мають практичне значення. В статті запропоновано технологію, алгоритм і реалізацію в програмному середовищі NI LabVIEW автоматизованої системи стеження за зіницями очей, що може служити головною складовою частиною такого каналу спілкування. Завдяки подібній системі можна побудувати засоби визначення напряму погляду людини і фіксації «натискання» поглядом клавішей віртуальної клавіатури. Реалізація в програмному середовищі NI LabVIEW забезпечує легке підключення до апаратури, універсальність та простоту подальшої модифікації алгоритмів роботи. The problem of communicating with surrounding by paralyzed patients who have lost their speech remains relevant in our time, although powerful technical means have appeared and even dangerous invasive technologies have been used. Any additional opportunities for creating communication channels will improve the lives of such patients, and therefore are of practical importance. The article proposes a technology, algorithm and implementation in the NI LabVIEW software environment of an automated system for tracking eye pupils, which can serve as the basis for such a communication channel. Thanks to such a system, it is possible to build means for determining the direction of a person’s gaze and fixing the “pressing” with a gaze using the virtual keyboard key. Implementation in the NI LabVIEW software environment provides easy connection to the equipment, versatility and simplicity of further modification of the operation algorithms. Проблема общения с окружающими парализованных пациентов, потерявших речь, остается актуальной в наше время, хотя появились мощные технические средства и даже используются опасные инвазивные технологии. Любые дополнительные возможности создания каналов общения улучшат жизнь таких пациентов, и поэтому имеют практическое значение. В статье предложена технология, алгоритм и реализация в программной среде NI LabVIEW автоматизированной системы слежения за зрачками глаз, которая может служить основой такого канала общения. Благодаря подобной системе можно построить средства определения направления взгляда человека и фиксации «нажатия» взглядом клавишей виртуальной клавиатуры. Реализация в программной среде NI LabVIEW обеспечивает легкое подключение к аппаратуре, универсальность и простоту дальнейшей модификации алгоритмов работы.

In this work, the algorithm is improved and a virtual device is created for automatic determination of parameters of approximating asymmetric Gaussian curves in the Labview software environment for analysis of electrocardiographic signals. As a result, the confidence of recognition when approximating waves in the presence of deviations and distortions of the shape of the wave is increased.

This report presents software optimization of the GW Instek AFG-2005 functional generator by providing functionality to it to perform control on vibration impact system. The generator is controlled via the LabVIEW software environment. The difficulties that arose during the optimization and their solution are presented.

Terahertz Time-Domain Spectroscopy (TDS) has emerged during the last two decades as a very popular technique for characterizing the low-energy excitations of several materials, gaseous, liquids and solids, as well as artificial materials as for instance epitaxial heterostructures and more. In recent years, the advances in THz technology allowed obtaining nonlinear optical effects with THz photons, showing remarkable results. In particular, THz Hyper-Raman Spectroscopy greatly expands the spectroscopic capability of the standard THz-TDS by combining intense and broadband THz pulses with a detailed analysis of the spectral content of the generated signal. It is evident that this improvement needs an adequate software support. The main parameter for coding the software which differs with respect to a standard THz-TDS software is the control of a motorized grating (monochromator), but several routines employed in the setup optimization stage rather than the actual measurement are needed as well. In this paper we present the TeraVision software, based on LabVIEW code, in order to highlight the solutions we adopted to tackle the main experimental challenges as well as to give a pleasant and user-friendly experience to expert users.

The paper presents a system for automated acquisition based on the LabVIEW software. The main concept is to conduct experiments and acquire the results in database, which would allow further analysis and discovery of concepts and processes. The stand is based on a LLC resonant converter evaluation module, but the concept could be applied to other types of power electronic converters and test benches.

In today’s solar energy situation, the general motto is “set it and forget it”. This argument derives from thorough analysis and reliability studies into photovoltaic panels. This ensures there is no need for repairs and daily monitoring. Yet several things can go wrong to cause the real output to deviate from the planned output. If defects and unanticipated problems of deterioration go undetected, they would result in reduced production of energy. The degradation of solar modules was also evident with the rise in series resistance of the module and consequent degradation of the output electrical power of the modules. This research paper explores the precedent of ageing among modules currently in use, with the objective of evaluating the durability of photovoltaic modules. This paper discusses comparative product life analysis of PV modules. Analysis of all solar PV modules is accomplished with LabVIEW software.

As the automotive market expands and evolve, more electrical engineering challenges occurs when it comes to study the implications of technology usage in daily life. While there is a constantly evolving frequency of presence of electric vehicles (EVs) that depends on alternating current (AC) power supplies, more specifically, on AC (three-phase) charging systems, there may be no doubts of an increased demand for extended possibilities for studying and diagnosis of these systems, while they are easy to understand, maintained and improved. For this need, it is proposed a virtual instrument that can be adopted in education, maintenance services and research, as LabVIEW software environment provides simulation capabilities among strong features for potentially monitoring of power quality in AC (three-phase) charging systems, being an excellent choice for the targeted appliances.

This paper presents one of the practical solutions for the real-time control of nonlinear systems using adaptive neural network-based control theory and shows two possible structures for this theory. The direct adaptive control (DAC) and indirect adaptive control (IDAC). Real-time test results reveal that the adaptive neural control structures suggested are practically feasible. The proposed structures have been implemented in Lab Viewsoftware and tested in real-time using a laboratory position control system.

Development methodology of color computer vision for defects detection of two commercial varieties (Chausa and Dashehari) of Indian mangoes has been proposed in this research. First, images of the fruits of both cultivars were acquired using color (RGB) camera and proper lighting regime and arrangement to avoid highlights and light reflection. Second, an algorithm was developed for pre-processing and processing to segment the external defects of mangoes using LabView software. After image processing and filtering the defected particles, the number of pixels was counted whose gray level was found to be lower than the threshold value during the particle analysis. Performance of algorithm was also evaluated in terms of accuracy, efficiency and the overall time taken by the image during processing and analysis. The overall accuracy and efficiency of proposed algorithm was found to be 88.6% and 93.3%, respectively. The average time of inspection was found to be increased as the severity of defects on mango fruit’s surface increased.

espanolSe estudio el comportamiento de las fuerzas y pares de taladrado al mecanizar madera de Pinus Radiata utilizando dos diferentes brocas, para uso en madera y para uso en metal, destacando como variables de interes el contenido de humedad de las probetas de madera y la orientacion de la fibra del Pinus Radiata. Para la toma de datos se utilizo una plataforma dinamometrica que posee sensores piezoelectricos de fuerza y par respectivamente. Para el analisis de los datos obtenidos por los sensores se utilizo el software LabVIEW, donde se modelaron las variables involucradas en los procesos de taladrado. Se estimo la presion especifica de corte de las probetas para cada contenido de humedad y orientacion de las fibras. En los resultados obtenidos se aprecia graficamente el comportamiento de las distintas fibras al mecanizarlas con las distintas brocas donde la fibra de orientacion tangencial presenta una resistencia mayor al corte, el cual se traduce en un aumento de la presion especifica de corte en comparacion a las otras orientaciones de la fibra. EnglishThe behavior of the drilling force and torque when machining Pinus Radiata wood was studied, utilizing two different drills: one for wood and another for metal, highlighting as variables of great interest, the moisture content of the wood specimens and the granular orientation of the Pinus Radiata. Regarding data collection, a dynamic platform was used that has two piezoelectric force and torque sensors, respectively. For the analysis of the data obtained by the sensors, the LabVIEW software was used, where the variables involved in the drilling processes were modeled. The specific cutting pressure of the tests for each content of the safety and orientation of the fibers was estimated using the different types of cutting tools. Among the results, the behavior of the different fibers is specifically observed when machining them with the different drills, where the tangential orientation fiber has a greater resistance to the cut, which results in an increase of the specific cutting pressure in comparison with the other orientations of the fiber.

espanolEn el presente trabajo se muestra el diseno de un sistema mecatronico, el cual emula los movimientos del cuello humano, ya que sostendra la cabeza de un robot humanoide (Arthur) desarrollado por la empresa Hanson Robotics. El diseno mecanico se basa en un robot esferico de 3 grados de libertad (3-GDL), se desarrolla el modelo dinamico a traves de las ecuaciones de movimiento de Euler-Lagrange. La etapa de control es una tarjeta de desarrollo FPGA (arreglos de compuertas programables en campo) de la familia Cyclone IV, la etapa de potencia se basa en transistores BJT, se implementa el controlador Tangente hiperbolico y una interfaz de comunicacion WiFi para configurar el robot desde una PC con ayuda del software Labview. Como resultado se muestra la integracion del sistema mecatronico, la interfaz desarrollada junto con la comunicacion FPGA-PC y control de posicion. El trabajo futuro sera la implementacion del sistema en el robot humanoide. EnglishThe present work shows the design of a mechatronic system, which emulates the movements of the human neck, as it will support the head of a humanoid robot (Arthur) developed by Hanson Robotics. The mechanical design is based on a spherical robot of 3 degrees of freedom (3-GDL), the dynamic model is developed through the Euler-Lagrange equations of motion. The control stage is a FPGA (Field Programmable Gate Arrays) development board, the power stage is based on BJT transistors, the hyperbolic tangent controller and a WiFi communication interface are implemented to configure the robot From a PC with the help of Labview software. As a result, the integration of the mechatronic system, the interface developed together with the FPGA-PC communication and position control, is shown. Future work will be the implementation of the system in the humanoid robot.

In this paper, the structural responses at discrete time steps are evaluated to understand the linear dynamics characteristics of a structural system using LabVIEW (Laboratory Virtual Instrument Engineering Workbench) tool. Time History Analysis (THA) which is an essential procedure to design a reliable structure when the structure is subjected to dynamic loading is taken into consideration for the study. Direct integration method was used to find out the dynamic response of the structure as it is applicable for both linear as well as nonlinear range. Block diagram that perform step-by-step integration to analyze the linear single degree of freedom (SDOF) system has been prepared in LabVIEW. The processing of data is carried out till the equilibrium is satisfied at all discrete time points within the interval of solution instead of any time t. Different ground motion time histories were considered for THA and responses of the SDOF system are evaluated. The results from LabVIEW were validated and the accuracy of the algorithms generated are discussed. It is observed that the accuracy and stability of the final solution depends on the variation of displacement, velocity and acceleration that is assumed in each step. Thus, LabVIEW workbench can therefore be recognized as an effective instrument in structural engineering owing to its fast sampling features.

The usage of vehicles is increasing drastically. The main cause for accidents is speeding, drunk and drive, diverting minds, over stress, and thanks to the electronic gadgets. This project deals with the accident detection system that happens due to the carelessness of the person who is driving the vehicle. This introduces a vehicle accident alerting system using the LabView Software which alerts the nearby Police station, Hospitals, and Family Members of the person driving the vehicle. If the person is unable to control the vehicle then the accident occurs. Once the accident occurs to the vehicle this system will send information to the registered mobile number and raise the help notification to the nearby police station officials and Hospital.

The aim of this research is to develop a phonocardiograph system to display the signal and information form of the human heart sound examination. The analytical method applied is to use the Fast Fourier Transform (FFT) to determine the frequency of responses of human heart sound signals by using Labview software. The results obtained indicate the system able to display the signal shape of the heart sound, based on ten respondents whose data are taken shows the range of heart sound frequencies is in the range of 145 to 225 Hz with a duration of 81 to 120 bpm. Keywords: Phonocardiograph, FFT, Labview

This paper aims to provide remote access to laboratories in power electronics to all levels from under graduate to research. The platform is focused on learning aspect as much as performing the experiments. Remote triggered power electronics laboratory for boost converter experiments has been developed using National Instruments(NI) data acquisition device myRIO and LabVIEW software package which has an extensive support for interfacing devices and instruments. LabVIEW software is used to access the data using myRIO which has both the processor and Field Programmable Gate Array (FPGA). Through Graphical User Interface (GUI), a user in remote location is able to vary parameter pertaining to boost converter circuit which is transmitted to laboratory PC that has NI LabVIEW installed in it. The input is further fed to circuit, and then, output is fed back to LabVIEW through NI myRIO which ultimately is returned to user’s PC using web-publishing tool and can be viewed through GUI. Remote Triggered (RT) power electronics laboratories can be effectively used to give laboratory demonstrations to large number of learners.

Light weight concrete (LWC) has been successfully used since the ancient roman times and it has gained its popularity due to its lower density and superior insulation properties. Compared to the conventional concrete, LWC can significantly reduce the dead load of structural elements, which makes it especially attractive in the construction of multi-storey buildings. The materials used for preparing the light weight concrete is pumice stones, burnt waste material ash and GGBS. The coarse aggregates are partially replaced with pumice stones in the varying fractions of 10%, 20% and 30%. The cement are partially replaced with waste burnt ash in the proportions of 5%, 10% and 15%. Additionally 5% GGBS is introduced into that mix proportions. It is observed that by the optimum presence of light weight aggregates such as 15% of burnt ash and 30% of pumice stone, density of the concrete is reduced upto 2140 kg/m3. In the same time the compressive strength is achieved around 75% to 81% of the strength of the conventional concrete. Analytical equations models are arrived from LabVIEW software and it has been well correlated the experimental test results with the deviation of \(\pm\)20%.

Cogeneration plants are one of the major power generation sources in this era of industrialization and automation. Bagasse is a by-product generated by the sugar industries on a large scale in India. The cogeneration plants use the bagasse produced by the sugar industries to generate power. Boiler system forms one of the primary components of the cogeneration plant. Designing a virtual model of the boiler system will help to model optimal systems. Simulation of the performance of the boiler system will aid in predictive maintenance as well. In this paper, a virtual model of a boiler system for a bagasse unit is designed in the LabVIEW software package. Such kind of performance analysis aids in better designs of actual models and predictive maintenance, which in turn saves time and reduces unwanted expenditures due to failures.

The synchronized data collection from vital sign monitors has been an ongoing issue. The widely used program S5Collect is a valuable tool especially for research purposes, moreover, in order to customize this program, an added plug-in with trial-specific modification can facilitate the data collection. The main aim of this study was to create a user-friendly plug-in for data capturing in operating rooms during anaesthetic care. The plug-in described was designed in co-operation with anesthesiologists in the LabVIEW software and verified on a fullbody simulator. Results showed that data captured via plug-in correlated well with the data from the simulator. This plug-in is planned to be used for data collection during robotic prostatectomy to analyze hemodynamic and ventilatory changes over the course of this operation, however, it can be easily adjusted for different clinical trials.

The control of inverted pendulum is a typical case as it exhibits a highly non-linear and unsteady phenomenon. This paper focusses on the comparative performance analysis for the swing up and stabilization of the inverted pendulum system. It uses trial and error method of LQR controller, algebraic approach for the selection of weighted matrices of the LQR controller, as well as the design and implementation of the state feedback pole-placement controller. The controllers used are for stabilization control and revolving up of Quanser based inverted pendulum system (QNET), which is rotary in the LabVIEW environment. The real-time operation has been carried out using the NI-ELVIS trainer kit, Quanser Rotary inverted pendulum system, and LabVIEW software.

The phytomonitoring subsystem software and hardware in a modern greenhouse building is provided through the use of LabVIEW software and Arduino equipment tested directly at the production site. It is shown that when growing vegetables in greenhouses it is important to take into account not only the temperature of the atmosphere in the greenhouse, but also the temperature of the plant itself. The dependence of the plant temperature on the light in the greenhouse has been analyzed, an advanced mathematical model of the greenhouse has been obtained as an object of control, suitable for forming control effects taking into account the spatial variance of the object. Purpose: to develop a subsystem of phytomonitoring in the greenhouse, which will complement the traditionally existing microclimate control system (in our case tomatoes) and clarify the mathematical model of the greenhouse as a spatially dispersed control object.

The inverted pendulum is a non-linear unbalanced system that needs to be controlled using motors to achieve stability and equilibrium. The inverted pendulum is constructed with Lego and using the Lego Mindstorm NXT, which is a programmable robot capable of completing many different functions. In this paper, an initial design of the inverted pendulum is proposed and the performance of different sensors, which are compatible with the Lego Mindstorm NXT was studied. Furthermore, the ability of computer vision to achieve the stability required to maintain the system is also investigated. The inverted pendulum is a conventional cart that can be controlled using a Fuzzy Logic controller that produces a self-tuning PID control for the cart to move on. The fuzzy logic and PID are simulated in MATLAB and Simulink, and the program for the robot is developed in the LabVIEW software., 5 pages, Accepted for The 6th International Conference on Mechatronics and Robotics Engineering (ICMRE 2020)

The traditional preservation and storage technology is relatively backward and can not meet the production needs. A monitoring system for fruit and vegetable storage environment is designed. This system includes two parts: upper computer and lower computer. The upper computer monitoring center is developed based on LabVIEW software, and the lower computer is controlled by AT89C51 single chip microcomputer. The system can accurately reflect the changes of temperature, humidity, carbon dioxide and other parameters of storage environment, and can timely respond to the control requests of temperature, humidity, carbon dioxide and other parameters. The test results show that the system realizes monitoring function of environmental parameters for fruits and vegetables storage and achieves the expected results, and has good application prospect.

It presents the simulation through the Hardware-in-the-loop (HIL) technique of a flow plant. The mentioned system is designed in the LabVIEW software and implemented in an FPGA. As a result of the system tests performed in manual mode, an absolute error of 0.02 is obtained in the simulated instruments. In addition, two controllers are designed (continuous and discrete), and the results indicate that the system works in real time and does not generate disturbances in response to the implemented controls.

The research of the quartz-crystal microbalance (QCM) biosensors can provide an effective, real-time, point-of-care testing-detection technology for the usage in the areas of clinical and laboratory research, drug screening, and bacteria testing, among others. This article describes the designing and structure of a real-time simulation of a LabVIEW software and the QCMD board for measuring the dissipation factor and frequency. The QCM with the dissipation-measuring function was designed and programmed, and it settles the oscillator with the QCMD board while the LabVIEW controller devises the ports. The dissipation factor of the QCM was determined from the time and the switch on/off settings programmed of the oscillation signal decreasing after the oscillator was signal falling edge. The system was also applied to detect values like the blood coagulation and Gl content in the DI water. By using the QCMD technique, one can analyze the online detection of the binding between a specific antibody and bacteria by two parameters: the quartz-crystal frequency (f) and dissipation (D). Keywords: Dissipation time, Quartz-crystal microbalance, LabVIEW, Equivalent circuit, QCMD board

Los fenómenos físicos derivados del efecto fotoacústico resultan de suma importancia en la determinación de propiedades térmicas. En el presente trabajo, se realiza una revisión del fenómeno, su desarrollo, aplicaciones y formas de mejorar la señal fotoacústica. Se fabricó e instrumentó un sistema experimental de lecturas fotoacústicas, con capacidad de hacer pruebas en un rango de frecuencia variable y constante. Primero, se realizó el diseñó, código G y fabricación de la mesa óptica en una maquina CNC de 3 ejes; luego, se estableció la comunicación del sistema experimental, utilizando la herramienta virtual LabView. Finalmente, se realizaron pruebas, los resultados obtenidos son consistentes con lo reportado en la literatura. El prototipo obtenido resulta ser muy compacto y práctico. Esto es posible, gracias a la eliminación de componentes mecánicas utilizadas en los sistemas tradicionales.

The goal of this paper is to present an implementation method for a Maximum Power Point Tracking (MPPT) algorithm using an electronic load and custom designed LabView software. The aim is to facilitate the testing of the algorithm in laboratory conditions, before it can be used in the real world, improving development time, facilitating cost reduction and offering confidence in the design. This paper analyses the most suitable MPPT algorithms for testing purposes and suggests a complete software and hardware implementation for hardware in the loop testing which can facilitate in-depth evaluation of different algorithms. In order to replicate realistic stimuli for the MPPT algorithm, a solar array simulator has been designed. Using the proposed method, the performance of various MPPT algorithms for different atmospheric conditions can be evaluated. The hardware and software setup have been tested and validated in laboratory conditions. The experimental results have validated the proposed evaluation method and the good dynamic response of the MPPT algorithm.

In most of the present day buses, the main problem that causes discomfort to the passengers sitting in the rear seats is that the seats are not maintained at the same level from the ground ...

Background Deep brain stimulation (DBS) has shown wide clinical applications for treating various disorders of central nervous system. High frequency stimulation (HFS) of pulses with a constant intensity and a constant frequency is typically used in DBS. However, new stimulation paradigms with time-varying parameters provide a prospective direction for DBS developments. To meet the research demands for time-varying stimulations, we designed a new stimulation system with a technique of LabVIEW-based virtual instrument. Methods The system included a LabVIEW program, a NI data acquisition card, and an analog stimulus isolator. The output waveforms of the system were measured to verify the time-varying parameters. Preliminary animal experiments were run by delivering the HFS sequences with time-varying parameters to the hippocampal CA1 region of anesthetized rats. Results Verification results showed that the stimulation system was able to generate pulse sequences with ramped intensity and hyperbolic frequency accurately. Application of the time-varying HFS sequences to the axons of pyramidal cells in the hippocampal CA1 region resulted in neuronal responses different from those induced by HFS with constant parameters. The results indicated important modulations of time-varying stimulations to the neuronal activity that could prevent the stimulation from inducing over-synchronized firing of population neurons. Conclusions The stimulation system provides a useful technique for investigating diverse stimulation paradigms for the development of new DBS treatments.

Software supported procedure for generation of long-time complex test sentences, suitable for testing the instruments for detection of standard voltage quality (VQ) disturbances is presented in this paper. This solution for test signal generation includes significant improvements of computer-based signal generator presented and described in the previously published paper [1]. The generator is based on virtual instrumentation software for defining the basic signal parameters, data acquisition card NI 6343, and power amplifier for amplification of output voltage level to the nominal RMS voltage value of 230 V. Definition of basic signal parameters in LabVIEW application software is supported using Script files, which allows simple repetition of specific test signals and combination of more different test sequences in the complex composite test waveform. The basic advantage of this generator compared to the similar solutions for signal generation is the possibility for long-time test sequence generation according to predefined complex test scenarios, including various combinations of VQ disturbances defined in accordance with the European standard EN50160. Experimental verification of the presented signal generator capability is performed by testing the commercial power quality analyzer Fluke 435 Series II. In this paper are shown some characteristic complex test signals with various disturbances and logged data obtained from the tested power quality analyzer.

The aim of the study is the assessment of possibility of using «Bioscope» device to detect the direction of changes in the integrative state of organism of rats under the influence of analeptic and convulsive agent of corazole, and known anticonvulsant medicaments the Phenobarbital, luminal, and diazepam. Materials and methods. Six series of experiments were performed with a 90-minute recording of integrative state of animals in the norm, after injection of corazol (50 mg/kg, subcutaneously), after injection of luminal (40 mg/kg, intraperitoneally) and diazepam (2 mg/kg, intraperitoneally), as well as after combined injection of luminal and corazole, diazepam and corazole. To record and analyze the signals of Bioscope device, a comprehensive software package was developed in the LabView software environment. Results. Signals of «Bioscope» device are changed differently after injection of corazole, luminal or diazepam. At the same time, among all used indicators, the spectral distribution of BB-intervals of «Bioscope» signals turned out to be the most sensitive to different experimental conditions. After injection of corazole, a pronounced peak in the frequency range of 0.3 osc/min is formed in the spectral distribution of inter-peak BB-intervals, which, perhaps, reflects the epileptiform state of the animal’s organism. After combined injection of luminal and corazole, as well as diazepam and corazole, the spectral distribution of inter-peak BB-intervals approaches the control type, which indicates the effectiveness of used anticonvulsants medicaments. Conclusion. The conducted research revealed the expediency of using the «Bioscope» device complex for rapid assessment of the type and dose of anticonvulsant medicaments for inerruption of epileptiform states of the organism.

The visualization facilities used by teachers for helping students to apprehend the topic of long transmission lines are considered. For the entire period of time this topic was taught, teachers searched for ways to outline this topic in the most understandable manner for facilitating the understanding by the students of the physical phenomena in and mathematical description of long transmission lines. The article describes how the tools used by the teachers and students for calculating steady-state operating conditions and transients in distributed parameter circuits were changed. The modern visualization facilities are scrutinized. The experience gained from using the integrated Mathcad software, the LabView software environment, and the Matlab system for calculating and visualizing the processes in long transmission lines is employed.

This study has successfully developed an audio analyzer system to identify the stroke position on table tennis racket instantaneously, which can effectively help the technical training. It’s well known, a good stroke is often determined by the exact stroke position on table tennis racket during the play. Therefore, instantaneous identification of the stroke position on table tennis racket during play can provide good adjusting reference of action and effectively help the technical training. In this research, this developed audio analyzer consists of a microphone and the analysing program with fast Fourier transform (FFT) using LabVIEW software. The face of table tennis racket is divided into four blocks which are the center, the left-of-center, the right-of-center, and the trail. The stroke sound generated between table tennis racket and ball during play is captured by the microphone and synchronously analyzed through FFT to determine the principal frequency, where the different stroke position on the table tennis racket yields different principal frequency. The results of calibration show that every table tennis racket has three characteristic principal frequencies on the four blocks, which can distinguish center, right/left, and trail respectively. The positional verification rate of the center position identification is all higher than 90% even up to 100% which can assist technical training.

The comprehensive power quality (PQ) issues in electrified railways have concerned many research innovations. Many of these topics need a detailed traction power supply system (TPSS) modelling. In response to such a need, a generalized simulation platform is therefore presented. It contains an offline simulation platform and an online monitoring platform, which are developed using MATLAB and LabVIEW software, respectively. The offline platform conducts power and harmonic simulations of the dynamic TPSS over a specific period. It consists of four main subsystems: (1) background utility subsystem, (2) dynamic traction load behaviour subsystem, (3) TPSS solution subsystem, and (4) PQ assessment subsystem. The platform is user-friendly and can be used to model and modify the traction topology (e.g. multiple lines, utility system, and catenary system) and parameters (e.g. different train types, transformers, and infrastructures). Finally, three case studies are presented, and the results show a good pe...

The purpose of the survey was to determine oxidation area and skin color change at the damaged apples by using Arduino based Force Resistive Sensor (FRS) and image analysis techniques. Mondial Gala, Mitch Gala, Jonagold local apple varieties were tested with FRS supported harvest glove which was prepared for the impact measurement. FRS glove used for determination of impact force while harvesting of apples. After the impact test, oxidation areas of each sample was evaluated by using a webcam and Labview platform. The oxidation areas were precisely measured by using LabView software after all these procedures. The effects of the impact tests indicated that response to impact bruising is dependent on flesh firmness and the impact force as well as apple variety.

The article uses LabView to develop a fault diagnosis system for wind power planetary transmissions. First, use LabView software to create a signal acquisition system. Then, the built wind turbine planetary transmission experiment platform was combined with the NI9171 data acquisition card and the upper computer. The hysteresis brake was used in the laboratory to simulate the external wind environment, and the planetary gear transmission planetary gear crack fault diagnosis and testing experiments were performed. The frequency domain signal is obtained from the initial time domain signal obtained by the experiment through the EMD and envelope demodulation method. The frequency of the corresponding planetary gear crack in the frequency domain signal is compared with the theoretical calculation of the planetary gear crack failure frequency. The results show that the frequency of the corresponding planetary gear cracks in the frequency domain spectra obtained by the experiment is basically consistent with the theoretical calculation of the frequency of cracks in planetary gears. The fault diagnosis system developed by LabView is reliable. The experiment provides a theoretical basis for fault diagnosis, optimisation design, and life prediction of wind turbine planetary transmissions.

A quantitative split charging device for hydrogen isotope elemental gases in the operation ranges of 10−5 Pa − 6 bar, 15–40 °C, and 10–500 sccm, controlled by a personal computer (PC) on the workbench of LabVIEW software, was carefully designed and constructed. In the device, volumetric charging mode and flow-controller charging mode can be adopted according to the molar quantity of split charging. The leakage rate and the quantitative split charging accuracy of the set-up were evaluated systemically. According to the experimental results of quantitative split charging from our device and mass comparator, this apparatus is well designed and assembled, and can guarantee 0.001 g quantitative split charging accuracy in the two charging modes.

Artykuł przedstawia koncepcję zintegrowanego systemu sterowania hybrydową wyrzutnią elektromagnetyczną. Głównym elementem koncepcji systemu sterowania będzie sterownik czasu rzeczywistego CompactRIO-9022, który pełnić ma również funkcję kontrolno – pomiarową. System będzie połączony do sieci LAN umożliwiając tym samym zdalne sterowanie pracą wyrzutni. W publikacji opisano również sterownik CompactRIO-9022 wraz z kartami rozszerzeń oraz program LabView.

This paper demonstrates a statistical analysis approach, which uses T-test and F-test for identifying whether the crack has significant impact on the total amount of power generated by the photovoltaic (PV) modules. Electroluminescence (EL) measurements were performed for scanning possible faults in the examined PV modules. Virtual Instrumentation (VI) LabVIEW software was applied to simulate the theoretical IV and PV curves. The approach classified only 60% of cracks that significantly impacted the total amount of power generated by PV modules.

The mobility of people who have suffered a degenerative disease or an accident is partially or totally reduced, which limits their locomotive independence. Therefore, this paper presents a proposal that facilitates the mobility of people suffering from moderate levels of amyotrophic lateral sclerosis (ALS). A control system has been adapted to an electric wheelchair to provide it with a certain degree of intelligence. The acquisition of multimedia data is done with a small camera adapted to a glasses frame that the person must use. For eye patterns tracking, a recognition system is performed using the LabVIEW software environment. The control system that regulates the movement of the wheelchair was designed on the Raspberry Pi embedded board as a low-cost proposal. Experimental tests and user surveys validate the correct operation of this device.

In this paper, the impact of fog on performance of VLC communication is explored. Highly modular testing system is based on LabVIEW software, modified National Instruments software defined radios (SDR) and commercially available LED car taillights. This work focuses on performance testing of multistate QAM modulations formats impaired by fog. An optional reference laser is used to monitor fog density throughout the whole measurement. This paper will present our testing solution and measured parameters.