[vc_row][vc_column][vc_message message_box_style=”outline” message_box_color=”om-accent-color-3″ icon_fontawesome=”fa fa-book”]<\/p>\n
[\/vc_message][om_agenda][om_agenda_day color=”om-accent-color-3″ title=”QUARTA-FEIRA – SALA A – S\u00cdNCRONA” date=”20\/10\/2021″][om_agenda_item speaker_links=”” time=”11 h 40 min – 12 h” title=”`{`205128`}` An\u00e1lise do ru\u00eddo magn\u00e9tico de Barkhausen por meio de transformada wavelet discreta para detec\u00e7\u00e3o da fase delet\u00e9ria sigma” speaker_ids=”1420″]Autores – Edgard de Macedo Silva, Silvana Luciene do Nascimento Cunha Costa, Bruno Ribeiro Ara\u00fajo, Suzete Elida Nobrega Correia, Amanda Medeiros Rodrigues, C\u00e1ssio Ramon Moura Lima<\/p>\n
Palavras-chave: Wavelet, Ru\u00eddo magn\u00e9tico de Barkhausen, Fragiliza\u00e7\u00e3o.<\/p>\n
Resumo: Ensaios eletromagn\u00e9ticos n\u00e3o destrutivos v\u00eam sendo desenvolvidos para acompanhamento de forma\u00e7\u00e3o de microestruturas delet\u00e9rias em materiais ferromagn\u00e9ticos. No presente trabalho, o ru\u00eddo magn\u00e9tico de Barkhausen resultante da intera\u00e7\u00e3o entre ondas emissoras de 5 Hz e 25 Hz e um a\u00e7o inoxid\u00e1vel duplex \u00e9 estudado atrav\u00e9s da transformada wavelet discreta. As fam\u00edlias db1, db5 e db10 foram analisadas com um n\u00edvel de decomposi\u00e7\u00e3o. Os resultados foram comparados com medidas de energia absorvida por impacto e microscopia \u00f3ptica. As medidas de RMS dos sinais mostraram ser eficazes na detec\u00e7\u00e3o da fase sigma e com melhores resultados para aplica\u00e7\u00e3o da fam\u00edlia db10.<\/p>\n
Palavras-chave: Energy efficiency, Technical regulation, Labeling, Quality infrastructure<\/p>\n Resumo: The main activities and results of the energy efficiency component of the regional project \u2018Quality Infrastructure for Renewable Energy and Energy Efficiency in Latin America and the Caribbean\u2019 are presented. This project was implemented by the Organization of American States (OAS), the Inter-American System of metrology (SIM), the Pan American Standards Commission (COPANT), the Inter-American Accreditation Cooperation (IAAC), and the Physikalisch-Technische Bundesantalt (PTB). The main objective of the energy efficiency component consisted in improving the regional quality infrastructure for energy efficiency of household appliances.<\/p>\n Palavras-chave: leakage current, potentiometric method, ac resistance, current comparison method, binary voltage divider<\/p>\n Resumo: This article discusses calibrations results of standard resistors performed with two commercially available equipment and a digital sampling impedance bridge developed at Inmetro. One of the commercial bridges uses the current comparison method and the other the potentiometric method with a binary voltage divider. Calibration was performed with standard resistors of 10 k\u03a9 and 100 k\u03a9 with significant leakage current. This study showed divergent results between each methodology. A specific methodology was used to estimate the leakage resistance of these resistors. This study contributes to establish criteria for correction and\/or inclusion of uncertainty components in resistors calibrated in these methodologies.<\/p>\n Palavras-chave: Reactor; HVDC; vibration; impedance; defect; failure; detection<\/p>\n Resumo: An experimental, non-destructive and non-invasive technique for the quick and accurate detection of the internal conditions of electromagnetic reactors for HVDC systems has been used successfully. This technique involves the application of mechanical vibrations, in scanning to find resonance frequencies and the maintenance of vibrations in these frequencies with discrete evaluation of the electrical impedance of the reactor. With the vibrations, it was identified that the unit contained moving and non-static parts as expected in healthy units. And yet, those moving parts could be moved permanently when vibrations in the resonant frequencies were applied, in safe amplitudes so as not to cause other damages.<\/p>\n Palavras-chave: communication platform, product standardization, power meters<\/p>\n Resumo: Eletra Energy Solutions company is trying to reduce the negative impacts arising from a disorganized and decentralized structure of its power meters portfolio’s command libraries, including their codes, documentation, and intellectuals. It intended to research and develop a unified communication platform for its power measurement products. This paper presents a platform with a Web architecture, based on ESB (Enterprise Service Bus), flexible, modularized, incremental, centralized, easy to maintain and evolve, using open source technologies. In this way, it is possible to provide an abstraction that allows access via bus to all the power meters’ functionalities existing in the company’s portfolio.<\/p>\n Palavras-chave: reactive power, measurement unit, electric power, international standardization, national regulation<\/p>\n Resumo: Problems have occurred in at least one country when national governments adopt in their legislation only the coherent derived units adopted by the Syst\u00e8me International d\u00b4Unit\u00e9s, the SI. Electrical utilities and instrument manufacturers justifiably refuse to adopt the volt ampere for the unit of reactive power. In this article, we review the arguments then posed to justify the addition of a side-note on the unit of reactive power, the var (symbol: var), to the 9th edition of the SI Brochure.<\/p>\n Palavras-chave: Low Current, Calibration software, Automation<\/p>\n Resumo: Among the main pillars of industry 4.0 are big data, artificial intelligence, and the industrial internet of things (IIoT) which, together with industrial automation, allow for significant operational advances. In the field of calibration, where processes and procedures must be standardized, automation diminishes the variability caused by human intervention. In addition, the process is no longer limited to the time the technician is present, speeding up deliveries and improving laboratory efficiency and productivity. In this work, a software for the calibration of low current meters is presented. Also, a mathematical model and uncertainty analysis related to the adopted calibration method is presented. It was possible to calibrate an electrometer in a fully automated way, with minimal intervention by the technician. This software was successfully validated through an intralaboratory comparison.<\/p>\n Palavras-chave: E-field strength, sensor probe, TEM Cells, E-field traceability<\/p>\n Resumo: This paper describes the development of an E-field strength sensor probe based on schottky diode technology to be used as a transfer standard for metrological proposes. This sensor probe was designed in a joint project between the National Metrology Institutes of Brazil (Inmetro) and China (NIM China) to bring traceability to many facilities generating Efield strength of both Institutes. The developed sensor allows transferring the E-field traceability from a \uf06d-TEM Cell used as a primary standard to secondary standards like TEM and G-TEM Cells in the frequency range of 500 kHz to 2 GHz and at E-field intensities from 3 V\/m to 70 V\/m, with low uncertainty and a good dynamic range. The working principle of the new measuring system is similar to an old system that is not manufactured anymore, but it was re-designed in order to improve its performance and characteristics obtaining, as a result, a reduction in size of more than 10 times. Stability test results are also presented, showing that the new sensor is suitable for future inter-comparisons.<\/p>\n Palavras-chave: Digital transformation, remote calibrations, automation, web applications.<\/p>\n Resumo: This paper gives a summary of the recent improvements in the digitalization process of the Electrical Standardization Metrology Laboratory (Lampe) of Inmetro using a web-based application based on the Smart Lab concept, based on a centralized database and a REST API for intercommunication between custom made and commercial hardware and software. In this context, a solution for hybrid-remote calibrations with remote control of calibration systems from anywhere using the Internet is presented.<\/p>\n Palavras-chave: Allan deviation, DDS, jitter, Josephson Voltage Standard<\/p>\n Resumo: This article describes the performance tests applied on the main components of a high stability signal synthesizer, DDS-based, that is being developed at Inmetro to ensure traceability to the SI in ac quantities and facilitate their standards calibration. It is being developed to work as a transfer standard for the Josephson Voltage Standard (JVS) in ac voltagessimilarly to Zeners for dc voltages. For projects that require precise signalslike this, it is highly necessary to evaluate each step of its construction and the characteristics of its components. To do so, evaluations such as power supply stability, DDS frequency stability, rms jitter, and noise attenuation of voltage regulators were made. Results found for the output signal frequency (generated by direct digital synthesis) showed oscillations between 0.09 Hz and 0.10 Hz and output stability with proportionally low values of Allan deviation. Regarding the voltage regulators, it was found a 75 dB average noise attenuation.<\/p>\n Palavras-chave: API, Controle, LabVIEW, Monitoramento, Mult\u00edmetro<\/p>\n Resumo: O controle e monitoramento de processos est\u00e3o cada vez mais presentes, tanto em aplica\u00e7\u00f5es industriais quanto em pesquisa e desenvolvimento. As medi\u00e7\u00f5es precisam mostrar precisamente o que est\u00e1 acontecendo no processo monitorado. Para fazer isso, a precis\u00e3o dos instrumentos \u00e9 uma caracter\u00edstica essencial nesses sistemas. Al\u00e9m disso, ter formas automatizadas de exportar essas medidas para um ambiente computacional \u00e9 essencial para seu uso em sistemas de monitoramento e controle. Este artigo apresenta o processo de desenvolvimento de uma API para controle e monitoramento de mult\u00edmetros digitais da s\u00e9rie U1250 da Keysight no LabVIEW, permitindo seu uso nestes tipos de aplica\u00e7\u00f5es.<\/p>\n Palavras-chave: Low Current, Validation, Calibration methods<\/p>\n Resumo: The calibration of low current meters in the range of picoamperes up to microamperes is important for the electronics industry, for the photometry area, and especially for the ionizing radiation area. In Brazil, traceability is limited to ten microamperes. In this paper, a reference system using Ohm’s law method is presented. It was possible to calibrate an electrometer between 2 picoamperes and 20 microamperes, with uncertainties between 0.70 % and 0.000060 %, respectively, as well as to validate the developed system and Ohm’s law method by comparing it with the method used to calibrate values above 10 microamperes, in an intralaboratory comparison.<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>[\/om_agenda_item][om_agenda_item speaker_links=”” time=”12 h 20 min – 12 h 40 min” title=”`{`192111`}` Quality infrastructure for energy efficiency of household appliances in Latin America and the Caribbean” speaker_ids=”1420″]Autores: Gregory A. Kyriazis, Karl-Christian G\u00f6thner<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>[\/om_agenda_item][om_agenda_item speaker_links=”” time=”14 h – 14 h 20 min” title=”`{`204823`}` Evaluation of the effects of leakage current in the calibration of standard resistors between two dc resistance bridges and a digital sampling impedance bridge” speaker_ids=”1423″]Autores: M\u00e1rcio C\u00e2ndido da Silva, Gean Marcos Geronymo<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>[\/om_agenda_item][om_agenda_item speaker_links=”” time=”14 h 20 min – 14 h 40 min” title=”`{`200391`}` Fault identification in electromagnetic reactors for HVDC systems using mechanical vibrations” speaker_ids=”1423″]Autores: Marcio Antonio Sens, Carlos Frederico Trotta Matt<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>[\/om_agenda_item][om_agenda_item speaker_links=”” time=”14 h 40 min – 15 h” title=”`{`204959`}` An innovative interoperable platform of high availability and communication between power measurement devices: a case study from the Eletra Energy Solutions company” speaker_ids=”1423″]Autores: Caio C\u00e9sar Cunha, Cilis Benevides Arag\u00e3o, Paulo R\u00e9gis Carneiro de Ara\u00fajo, Rhuan Santiago, Andrio Antonio, Henrique Innecco, J\u00e2nio Oliveira, Lucas Costa, Rafael Ara\u00fajo, Pedro J\u00fanior<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>[\/om_agenda_item][om_agenda_item speaker_links=”” time=”15 h – 15 h 20 min” title=”`{`194704`}` On the unit of reactive power” speaker_ids=”1423″]Autores: Gregory A. Kyriazis<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>[\/om_agenda_item][om_agenda_item speaker_links=”” time=”15 h 20 min – 15 h 40 min” title=”`{`206793`}` A software to calibrate low-current meters in the range of picoamperes to microamperes” speaker_ids=”1423″]Autores: Marcus Vin\u00edcius Viegas Pinto, Rodrigo Vargas Freitas Ventura, Regis Pinheiro Landim, Rodrigo Pereira David<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>[\/om_agenda_item][om_agenda_item speaker_links=”” time=”16 h – 16 h 20 min” title=”`{`209135`}` Development of an upgraded E-field strength probe to be used as a transfer standard for metrological proposes” speaker_ids=”1425″]Autores: Juan Carlos Mateus Sanchez, Donglin Meng<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>[\/om_agenda_item][om_agenda_item speaker_links=”” time=”16 h 20 min – 16 h 40 min” title=”`{`205078`}` Digitalization of an Electrical Metrology Laboratory: Hybrid-remote calibrations” speaker_ids=”1425″]Autores: Gean Marcos Geronymo<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>[\/om_agenda_item][om_agenda_item speaker_links=”” time=”16 h 40 min – 17 h” title=”`{`207236`}` Characterization of signal synthesizers for application in ac voltage primary standardization” speaker_ids=”1425″]Autores: Rodrigo de Oliveira Garcia Soares, Regis Landim, Vanderson Teixeira<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>[\/om_agenda_item][om_agenda_item speaker_links=”” time=”17 h – 17 h 20 min” title=”`{`204897`}` Desenvolvimento de uma API em LabVIEW para controle e medi\u00e7\u00e3o em mult\u00edmetros digitais da Keysight da s\u00e9rie U1250″ speaker_ids=”1425″]Autores: Ederson Ramalho<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>[\/om_agenda_item][om_agenda_item speaker_links=”” time=”17 h 20 min – 17 h 40 min” title=”`{`206792`}` A reference system to calibrate low-current meters in the range of picoamperes to microamperes” speaker_ids=”1425″]Autores: Marcus Vin\u00edcius Viegas Pinto, Rodrigo Vargas Freitas Ventura, Regis Pinheiro Landim, Rodrigo Pereira David<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>[\/om_agenda_item][\/om_agenda_day][\/om_agenda][om_agenda display_room=”” display_speakers=””][om_agenda_day color=”om-accent-color-2″ title=”Coordenadores: Regiane Maria de Souza; Luiz Vicente Tarelho; Gean Marcos Geronimo” el_class=”om-agenda-day-header-assicrona”][\/om_agenda_day][om_agenda_day color=”om-accent-color-2″ title=”ASS\u00cdNCRONA”][om_agenda_item icon_fontawesome=”fa fa-check” speaker_links=”” title=”`{`205496`}` Bilateral comparison of dc voltage at 10 V between UTE and INMETRO” speaker_ids=”1426″]Autores: Daniel Slomovitz, Regis P. Landim, Heriguati de Souza, Leonardo Trigo<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>
\n<\/span>[\/om_agenda_item][om_agenda_item icon_fontawesome=”fa fa-check” speaker_links=”” title=”`{`208162`}` Identification and evaluation of uncertainty contributions to optical current sensor measurement uncertainty” speaker_ids=”1426″]Autores: Marcelo Costa, Jo\u00e3o Cris\u00f3stomo Weyl Albuquerque Costa<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>
\n<\/span>[\/om_agenda_item][om_agenda_item icon_fontawesome=”fa fa-check” speaker_links=”” title=”`{`206920`}` Uncertainty assessment of a resistive voltage divider for binary step-up method implementation in HVDC applications” speaker_ids=”1426″]Autores: Patricia C de O Vitorio, Leonardo A A de Souza, Regis P Landim, Charles B do Prado<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>
\n<\/span>[\/om_agenda_item][om_agenda_item icon_fontawesome=”fa fa-check” speaker_links=”” title=”`{`204955`}` A software platform to compare LPWAN technologies for smart-metering communication” speaker_ids=”1426″]Autores: Caio C\u00e9sar Cunha, Cilis Benevides Arag\u00e3o, Paulo R\u00e9gis Carneiro de Ara\u00fajo, Rhuan Santiago, Andrio Antonio, Henrique Innecco, J\u00e2nio Oliveira, Lucas Costa, Samir Sales, Alberto Alexandre<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>
\n<\/span>[\/om_agenda_item][om_agenda_item icon_fontawesome=”fa fa-check” speaker_links=”” title=”`{`205063`}` Precision digital multimeter long-term stability evaluation for traceability establishment in electrical calibration laboratories” speaker_ids=”1426″]Autores: Marcelo Melo da Costa<\/p>\n
\n<\/i> P\u00e1gina do Artigo<\/span><\/a>
\n<\/span>[\/om_agenda_item][om_agenda_item icon_fontawesome=”fa fa-check” speaker_links=”” title=”`{`205056`}` Time and Frequency Dissemination using TWSTFT” speaker_ids=”1426″]Autores: Mauro Vieira de Lima, Fernando A. Rodrigues<\/p>\n