Browsing Приборы и методы измерений by Title
Now showing items 130-149 of 497
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Surface Eddy Current Probes: Excitation Systems of the Optimal Electromagnetic Field (Review)
(БНТУ, 2020)Development of technical tools with improved metrological and operational characteristics is the actual problem of the eddy current testing. Ensuring the optimal distribution of the electromagnetic excitation field in the testing zone carries out confident detection of the defects and determination of their geometrical parameters by means of eddy current testing. The purpose of ...2020-06-29 -
Synthetic Aperture Orbital Telescope for Earth Remote Sensing Equipment
(БНТУ, 2018)The object of the research is the development of the method of aperture synthesis of a mirror system designed for remote sensing of the Earth. The analysis of existing methods for the formation of the synthesized aperture was carried out, their accuracy, cost, and mass-dimensional characteristics were evaluated. A new version of the optical system of the synthetic aperture mirror ...2019-01-02 -
System Eliminating Emergency Discharges in Industrial Facilities Waste Waters Using Relative Signal Description
(БНТУ, 2022)Peak emergency discharges of harmful substances to the industrial companies waste waters that normally form coagulates over time present a serious environmental problem. These coagulates can enter natural water bodies during the wastewater discharge. Thus, detecting these coagulates in real-time is a relevant problem. To solve this problem, the authors suggest building an automated ...2022-07-06 -
System for Assessing the Effectiveness of Temporary Blinding Devices
(БНТУ, 2020)The development of non-lethal weapons and, in particular, temporary blinding devices is associated with problem of choosing boundaries of effectiveness. The aim of present work is determination of criteria for estimation of the effects of visual jamming devices action on the naked eye. The present-day scoring system used for effectiveness estimation of laser temporary blinding ...2020-06-29 -
System of Laser Monitoring of Water Pollution with Application of Relative Description of Signal Shape
(БНТУ, 2020)As a rule, the wastewater treatment system is not designed to filter substances formed, as a result of beyond design basis accident. The nature of the beyond design basis accident is associated with the shortterm appearance of a clot of these substances in wastewater, determined by the volume of the substance storage tank. Therefore, a rational approach is to divert this portion ...2020-06-30 -
Temperature Measuring Method Accuracy Evaluation in the Microarc Heating Process Based on Reproducibility and Uncertainty Indicators
(БНТУ, 2024)It is necessary to control temperature using thermoelectric sensors for steel products surface alloying in conditions of microarc heating. The using S-type thermocouples possibility has been substantiated, main factors affecting the measurement results have been established, and the the reproducibility index functional dependence on the measured temperature has been determined, ...2024-05-23 -
Tensor Calculus in Digital Colorimetry
(БНТУ, 2022)Any object can have many implementations in the form of digital images and any digital image can be processed many times increasing or decreasing accuracy and reliability. Digital colorimetry faces the need to work out issues of ensuring accuracy, metrological traceability and reliability. The purpose of this work was to generalize approaches to the description of multidimensional ...2022-11-11 -
Tests of Impregnation Speed of Electrotechnical Pressboard with Insulating Oil
(БНТУ, 2020)The paper presents a new test stand for ivestigating the rate of penetration of transformer oil through electrotechnical pressboard. The stand consists of a pipe, to the lower end of which is glued a pressboard plate. The pipe is filled with insulating oil. A mirror is placed under the plate, which directs its image to the lens of the camera, which takes a series of photographs ...2020-06-30 -
The Dynamic Behaviour of Capacitive Humidity Sensors
(БНТУ, 2020)The sensor design features and the sensing material properties which can influence the response time of the polymer-based capacitive humidity sensors are shortly discussed. The ways of specifying the dynamic properties of capacitive humidity sensors in technical data sheets by the leading companies on the market are briefly characterized and discussed. The schematic view and ...2020-03-17 -
The Use of Fresnel Lenses in LED Sources of Local Illumination to Оptimize the Distribution of Illumination of the Working Plane
(БНТУ, 2023)For widely used LED sources there is a sharp decrease in the illumination of the working plane from the center to the edge. The purpose of this study was to analyze the effectiveness of Fresnel lenses usage as a fairly simple and technological element to increase the uniformity of illumination created by LED lamps of local lighting. A method has been developed for calculating of ...2023-08-15 -
Thermal lensing measurements in the anisotropic laser crystals under diode pumping
(БНТУ, 2012)An experimental setup was developed for thermal lensing measurements in the anisotropic di-ode-pumped laser crystals. The studied crystal is placed into the stable two-mirror laser cavity operating at the fundamental transversal mode. The output beam radius is measured with re-spect to the pump intensity for different meridional planes (all these planes contain the light propagation ...Nm.2013-02-05 -
Use of the Laser Beam Deflection Technique for Thermo-Optic Coefficients Study in Gadolinium-Yttrium Oxyorthosilicate Doped with Erbium Ions
(БНТУ, 2023)Results of use of the laser beam deflection technique for determination of thermo-optic coefficients (TOCs) of the Er3+-doped gadolinium-yttrium oxyorthosilicate crystal (Er3+:(GdY)2SiO5 – Er:GYSO) are presented. A 0.1 at.% Er-doped gadolinium-yttrium oxyorthosilicate crystal was grown by the Czochralski method under nitrogen atmosphere. Raw materials such as Er2O3, Gd2O3, Y2O3, ...2023-12-12 -
Variables Selection in the Ultraviolet, Visible and Near Infrared Range for Calibration of a Mixture of Vegetable Oils by Absorbance Spectra
(БНТУ, 2021)The aim of the work was a multivariate calibration of the concentration of unrefined sunflower oil, considered as adulteration, in a mixture with flaxseed oil. The relevance of the study is due to the need to develop a simple and effective method for detecting the falsification of flaxseed oil which is superior in the content of essential polyunsaturated fatty acids to olive oil. ...2021-03-18 -
Yb:CALYO-based femtosecond chirped pulse regenerative amplifier for temporally resolved pump-probe spectroscopy
(БНТУ, 2018)Diode-pumped femtosecond chirped pulse regenerative amplifiers based on Yb³⁺-materials are of practical importance for wide range of scientific, industrial and biomedical applications. The aim of this work was to study the amplification of broadband chirped femtosecond pulses in regenerative amplifier based on Yb³⁺:CaYAlO₄ crystal. Such systems use femtosecond mode-locked lasers ...2018-09-18 -
Автоматизированная измерительная система контроля пространственных угловых отклонений
(БНТУ, 2012)Разработана автоматизированная измерительная система с использованием приборов и средств инерциальной навигации, позволяющая повысить точность измерения углового рассогласования установочных площадок под приборы научной аппаратуры. Расширение функциональных возможностей достигается за счет дополнительного измерения угла азимутального рассогласования.2013-02-14 -
Автоматизированный фотоплетизмограф
(БНТУ, 2013)Разработан автоматизированный фотоплетизмограф для регистрации пульсовых кри- вых. Приведены технические характеристики прибора и результаты экспериментальной апробации. Разработанный фотоплетизмограф целесообразно использовать для исследовательских целей по совершенствованию конструкций оптоэлектронных датчиков для конкретных биообъектов и участков биотканей, что позволит ...2013-12-02 -
Адаптация разработанной методики оценки состояния металлоконструкций к контролю изделий с наплавленными покрытиями
(БНТУ, 2012)Рассмотрены вопросы адаптации разработанной авторами методики оценки состояния металлоконструкций к контролю качества восстановленных и упрочненных деталей и инструментов с нанесенными на них износостойкими покрытиями. Подтверждена эффективность применения магнитного (по коэрцитивной силе) и дюрометрического методов неразрушающего контроля для оценки надежности эксплуатации изделий ...2013-02-07 -
Адаптивные оптические системы светотехнического оборудования транспортных средств
(БНТУ, 2011)Рассмотрены основные принципы реализации современных адаптивных систем сигнального светотехнического оборудования транспортных средств, проведен анализ используемых оптических систем; обоснована необходимость применения светодиодов. Приводится конструкция оптической системы заднего адаптивного комбинированного светодиодного фонаря транспортного средства с несколькими уровнями ...2012-03-27 -
Адаптивные фильтры сглаживания сигналов датчиков в системах микроавионики
(БНТУ, 2012)Рассматриваются адаптивные к изменению интенсивности шумов измерения фильтры сглаживания сигналов датчиков, используемых в системах микроавионики. Адаптация осуществляется за счет предварительной статистической обработки ошибок фильтрации. Представлен алгоритм вычисления коэффициентов адаптивного фильтра и результаты моделирования его работы.2013-02-05 -
Алгоритм обработки данных системы контроля монтажа клеесварной муфты на магистральном трубопроводе
(БНТУ, 2014)Предложен алгоритм расчета оптимального давления запрессовки самотвердеющего вещества в подмуфтовое пространство клеесварной муфты, учитывающий геометрические и прочностные параметры усиливаемого трубопровода, муфты и самотвердеющего вещества, а также технологические параметры формирования подмуфтового слоя. Создание оптимального давления при формировании подмуфтового слоя позволяет ...2014-08-25