Academic literature on the topic 'Блок NI USB 6009'

This paper describes the use of modern measuring and data acquisition system for determining characteristics of feromagnetic material. For this purpose data acquisition card NI USB-6009, PC with data acquisition software and fluxmeter Electrical Steel Measuring System MPG 100 D were used. Based on the results obtained by measurements the modeling of hysteresis loop is performed by using appropriate mathematical model.

The aim of this work is to design and implement an ECG generator for didactic biomedical engineering laboratory. The proposed generator provides analog ECG signals using synthesized or experimental records. The technique used in this work consists to generate the desired ECG waveforms through the PWM outputs of an Arduino board and low-pass filter. To provide many educational functions in both analog instrumentation and digital processing, the generator supplies output voltages in asymmetric or differential mode. To allow the user to setup the ECG signal to be generated, a LabVIEW application has been implemented. Experimentations on proposed generator and results were accomplished using the NI USB 6009 acquisition module and NI MAX software.

This paper presents the development of a data acquisition system and the evaluation of the electromagnetic phenomena associated with power quality according to the IEEE Standard 1159-1992 and applied to the particular case of single-phase electrical power systems. The evaluation software is implemented in the Labview® professional software using a NI 6009 USB board of the National Instrument® as acquisition device. The hardware implementation of the sensors was shown. Also the development of the algorithm and the design of a graphical user interface for viewing of the voltage and current waveforms, spectra, frequency and the power quality disturbances such as sags, swells, undervoltage, overvoltage, so on. Likewise, at the end a concise analysis of costs is presented to show that the developed system has a lower price to current solutions that are available in the market. Finally a study case was shown.

In this paper, an ultra-precision positioning stage is introduced. The finite element method is used to establish the theoretical model, and the strain test system of experiment is established. The system includes the static strain test and the dynamic strain test. The test system contains the software and hardware system. The software system includes the static strain measurement software of DH3816, the programmable constant temperature and humidity chamber control software TEMI300, and the dynamic strain test system developed from NI Labview. The hardware system contains industrial personal computer (IPC), piezoelectric (PZT) actuator, static strain gauge of DH3816, strain amplifier of YE1817, NI USB-6009 multifunction data acquisition card, strain gauge, programmable temperature and humidity chamber, and precision positioning stage. The experimental test is carried out to examine the theoretical analysis considering thermal effect. Experimental results and analytical results indicate that whether the stresses increase or decrease linearly or nonlinearly depend on the function of the temperature to the time during the transient response same as the stresses increase or decrease linearly during the steady response under uniform temperature change. The dynamic responses of platform are affected by the temperature change, and it is essential to consider thermal effect when analyzing compliant mechanisms.

The article presents the concept and capabilities of a computer system for analysing measurement data for a skew rolling mill used to produce steel balls. The computer system for data acquisition and analysis consists of cooperating systems designed to perform control and measurement tasks during the operation of a skew rolling mill. Their main task is to collect and record data related to the measured physical parameters of the batch rolling process. This system registers the current and analyses the radial forces and torque acting on the rolled element by the rolling tool. The process of data acquisition, analysis and archiving is carried out by means of an NI USB 6009 measuring card together with the attached systems of transducers and force and torque sensors and a computer with an installed application. The measurement application was developed in the LabVIEW environment. The application algorithm is based on the state machine architecture and enables the configuration of measurement elements and technical parameters, checking the functioning of the control and measurement system and the acquisition and archiving of measurement data.

In conventional transmission line protection, a distance relay is used to provide the primary as well as backup protection. The voltage and current phasors measurement needed by the distance relay for determining the impedance may be affected by the power disturbances such as power swing. Consequently, this power swing may cause mal-operation of Zone three distance relays which in turn may affect on the reliability of the whole protective scheme. Many power swing blocking functions (PSB) have been developed to mitigate these effects. In this paper, a new model of Mho distance relay with dual-quadrilateral power swing detection characteristic has been developed and implemented first in PC using LabVIEW, then tested using Power System Simulink Model under different faults and power swing conditions. Finally, the relay prototype has been realized using acquisition card NI USB-6009, which acquires real-time signals of the currents and the voltages, processes them digitally and outputs tripping or blocking signal to the circuit breaker. The obtained results show that the relay provides good discrimination between a fault and power swing condition.

Purpose of research. The article is devoted to development and approbation of parameters' assessment technique of anchor inertia moments of direct current motor with an independent excitation (DCM IE) and its loadings used in laboratory vibration installation for chaotic dynamics research.Methods. The DCM IE mathematical model and technique description for assessment of anchor inertia moment with loading as a result of parametrical identification on the basis of approximation integrated curve of current runaway and implementation of spectral analysis is described in the article. Joint dynamics modeling of Maxon RE25 electric motor with electric and mechanical part was done in Matlab Simulink system. Mechanical part was constructed in MSC Adams. Technique operability of parametrical identification was checked on the basis of machine experiment results.Results. Structure and general view of information and measuring system of laboratory vibration installation for chaotic dynamics research on the basis of input-output NI USB-6009 module is presented. Dispersal curves and an amplitude range of current received during experiment for definition of anchor inertia moments of Maxon RE25 engine and debalances are analysed. Calculation of anchor inertia moments and debalances are made according to an offered technique. Calculation of relative errors in comparison with passport value is also made.Conclusion. According to the results of carried out parallel experiments it is found out that experiments can be made according to Kokhren's criterion. And the error of DCM anchor inertia moments definition is no larger than 5%. Therefore it can also be used for calculations with sufficient accuracy of debalances inertia moments.

The induction motors (IMs) are undoubtedly the most used machines in industries because of the advantages they offer such as simplicity, service continuity and low cost. Due to wear and tear, the motor suffers different types of mechanical and electrical failures. Depending on the criticality of the plant motors, it could be necessary to implement predictive techniques in order to detect the faults before they can cause unnecessary downtime. Therefore, in this paper, the research approach was to develop a low cost measurement system based on a micro controller platform for machine diagnosis. The FRDM K64F developing board was selected as the most suitable for satisfying the system conditions, and it was used to collect induction motor`s current data. In order to validate the accuracy of the developed system, the Frequency Transfer Functions (FRF) of the developed measurement system and the standard system (NI USB-6009) were compare. It showed a flat frequency spectrum from 0 to 1 KHz, with small fluctuations of about 0.25 dB standard deviation. A fully automated test bench was implemented, which allows to perform all the measurement tests with the IMs, and in this case, the detection and diagnosis of broken bars. Around 240 tests were performed with varying loads, different rotation speeds, and with different severity damage levels in the rotor. The data analysis procedure for broken rotor bar detection and motor diagnosis was performed by the Motor Current Signature Analysis (MCSA), FFT and Enveloped Analysis (EA). Finally, the research approach was successfully accomplished, by the team by developing a software firmware measurement ultra-low cost development platform for machine diagnosis. It was also developed a proper antialiasing filter to reduce industrial noise. The effectiveness of the proposed system is detecting a weak fault in a noise signal. It was found out a new consistent and robust parameter called the pole pass frequency (fpsf), which could be used as a diagnosis parameter for detection of broken rotor bars faults, with their damage severity degree. The detected parameter can be found around 2.6 Hz, and it increases in amplitude with increasing damage severity.

Проаналізовано методи аналізу якісного та кількісного складу харчових продуктів. На основі проведеного огляду методів контролю якості овочів визначено, що перспективним методом кількісного аналізу вмісту мінеральних речовин в овочах є кондуктометричний метод дослідження рідин, що ґрунтується на вимірюванні електричної провідності. На основі математичного аналізу з використаннямтеорії нечітких множин вивчено вплив мінеральних добрив на вміст корисних речовин (клітковини, вуглеводів, білків). При цьому, задача розв’язана у три етапи: 1) апроксимація результатів впливу мінеральних добрив на вміст корисних речовин 2) симплекс – метод. Знаходження оптимальних значень задачі лінійного програмування - параметрів w0 та d0 3) розв’язок системи нерівностей із шуканим результатом – марка мінеральних добрив. Також здійснений розрахунок функції належності цілі та обмежень для повної картини розв’язку математичної задачі. Досліджено можливості відомого імітансного методу для контролю показників якості овочевого соку. У кондуктометричну комірку поміщались модельні рідини – овочеві соки з домішками важких металів. Вивчено залежності активної та реактивної складових електропровідності овочевого соку з домішками іонів міді та натрію в частотному діапазоні 50 Гц - 100 кГц. Використання отриманих залежностей покращує інформативність електричних досліджень і, таким чином, підвищує оперативність аналізу показників якості. Розроблений засіб вимірювання та отримані залежності дають змогу здійснювати експрес-контроль вмісту домішок в овочевих соках за електричними параметрами. Для імітансного контролю показників якості овочевого соку запропоновано і реалізовано віртуальний засіб вимірювання на основі апаратно-програмної платформи LabVIEW та з блоком NI USB 6009. Віртуальний прилад у складі: ПК з програмним забезпеченням LabVIEW, згаданого блоку NI USB 6009 та кондуктометричної комірки з соком вжито для визначення вмісту важких металів у цьому соці. Тим самим, доведено, що у виробничих умовах при незначних витратах можна оперативно контролювати якість овочів, з яких отримують досліджуваний сік. Проанализированы методы анализа качественного и количественного состава пищевых продуктов. На основе обзора методов контроля качества овощей определено, что перспективным методом количественного анализа содержания минеральных веществ в овощах есть кондуктометрический метод исследования жидкостей, основанный на измерении электрической проводимости. На основе математического анализа с использованием теории нечетких множеств изучено влияние минеральных удобрений на содержание полезных веществ (клетчатки, углеводов, белков). При этом, задача решена в три этапа: 1) аппроксимация результатов воздействия минеральных удобрений на содержание полезных веществ 2) симплекс - метод. Нахождение оптимальних значений задачи линейного програмирования - параметров w0 и d0 3) решение системы неравенств с искомым результатом - марка минеральных удобрений Расчет функции принадлежности цели и ограничений для полной картины решения математической задачи. Исследованы возможности известного имитансного метода для контроля показателей качества овощного сока. Для экспериментальных исследований разработана структура измерительного средства в составе кондуктометрической ячейки, RLС-метра, блоков управления и обработки результатов. В кондуктометрическую ячейку помещались модельные жидкости - овощные соки с примесями тяжелых металлов. Изучены зависимости активной и реактивной составляющих электропроводности овощного сока с примесями ионов меди и натрия в частотном диапазоне 50 Гц - 100 кГц. Использование полученных зависимостей улучшает информативность электрических исследований и, таким образом, повышает оперативность анализа показателей качества. Разработан способ измерения и полученные зависимости позволяют осуществлять экспресс-контроль содержания примесей в овощных соках по электрическим параметрам. Для иммитансного контроля показателей качества овощного сока предложено и реализовано виртуальное средство измерения на основе аппаратно-программной платформы LabVIEW с блоком NI USB 6009. Виртуальный прибор в составе ПК с программным обеспечением LabVIEW, упомянутого блока NI USB 6009 и кондуктометрической ячейки с соком приняты для определения содержания тяжелых металлов в этом соке. Тем самым, доказано, что в производственных условиях при незначительных затратах можно оперативно контролировать качество овощей, из которых получают исследуемый сок. The dissertation is devoted to the improvement of methodological and metrological assurance of quality control of vegetables and juices from them on the basis of their electro physical parameters analysis with the help of virtual means of immitance control. The first section analyzes the methods for the qualitative and quantitative composition of food products. Measuring methods of analysis are based on the physical, chemical and biological properties of the substance. The described methods are briefly described; their advantages and disadvantages are indicated. Electrochemical methods, which are related to changes in structure, chemical composition and concentration, are shown to be effective and provide qualitative and quantitative analysis of substances in gas, liquid or solid state. Informative parameters, in this case, are electrical parameters. In the second section, a comparative analysis of the normative base of Ukraine was carried out in order to approximate the legislation on quality and safety of vegetables and their products to the standards of international law. To optimize the overall quality index, it is proposed to use the mathematical apparatus of the theory of fuzzy sets, since the characteristics of the product must be in a certain range. As a result, several mathematical models for the complex evaluation of the quality of agricultural products for fuzzy constraints are constructed: I model is a model for identifying vegetables with the highest content of fiber, carbohydrates and proteins, depending on the amount of mineral fertilizers (maximum value of the function defining a complex quality index); II Model - a model for achieving the maximum weight of agricultural products (maximum value of the function of mass depending on mineral fertilizers); III model - a model for ensuring the cultivation of agricultural products with specified parameters of the proportion of nutrients (carbohydrates, proteins); IV Model is a model of safety of vegetables, that is, a model for assessing the safety of products in relation to its contamination by heavy metals. Based on mathematical analysis using fuzzy set theory, the effect of mineral fertilizers on the content of nutrients (fiber, carbohydrates, proteins) has been studied. In this case, the problem is solved in three stages: 1) Approximation of the results of the influence of mineral fertilizers on the content of nutrients 2) Simplex - method. Finding the parameters w0 and d0 3) The solution of the system of inequalities with all the desired results - the brand of mineral fertilizers, mathematical parameters λ Calculation of the goal affiliation function and constraints for a complete picture of the solution of a mathematical problem. In the third section, a processing of the results was developed. In conductivity cell was placed model liquids - vegetable juices with impurities of heavy metals. The dependences of the active and reactive components of electrical conductivity of vegetable juice with impurities of copper ions and sodium ions on the frequency of the electromagnetic field of 50Hz-100kHz were studied. It was found on the basis of experimental study: 1) As the frequency of the test signal increases, the active component becomes constant (independent of frequency), and the reactive component approaches zero. As the purpose of research is complex conductivity, I consider research on high frequencies uninformative. 2) At frequencies below 1000 Hz, the experimentally obtained inverse dependence of the active and reactive components of conductivity, which provides information on the quality of juice without additives. 3) In the presence of heavy metal impurities in the controlled juice sample, using immittance measurements, it is possible to prove the efficiency of this method for qualitative and quantitative analysis of carrot juice. The fourth chapter presents a developed virtual means for measuring the imitation of vegetable juice was described. For immitance control of vegetable juice quality indicators, a virtual measuring device based on the LabVIEW hardware platform and a compatible NI USB 6009 unit was proposed and implemented. This enabled the rapid analysis of the juice content of the mineral substances by electrical parameters. Thus, in production conditions, at a negligible cost, you can quickly control the quality of vegetables from which the juice is obtained. The virtual device consists of: a PC with LabVIEW software, the mentioned NI USB 6009 block and a conductivity cell with juice used to determine the content of heavy metals in this juice. To measure and calculate the imitation of the object, a sinusoidal test signal was generated in the form of voltage variable amplitude of 10-20 mV. Since the NI USB 6009 unit is not capable of generating alternating voltage, the program uses certain elements of the NI-DAQ task with the While Loop with Stop Button cycle. To do this, it was created the Channel Generation - Create Channel (Start Task, Write, Clean Task), and Wait, which governs the sinusoidal period. The immittance values were obtained by mathematical processing of voltage and current signals of the conductometric cell with the investigated juice. The operation of mathematical processing is provided by the algorithm of the virtual measuring instrument. It was carried out in three possible ways: 1. The classical method, which involves the use of Euler's equation. 2. A method of measuring active and reactive power and dividing the effective value of the signal power by the square of the current value. 3. Method using exponential Fourier transformation using the voltage and current signals of the measured object to estimate the first harmonics.