Measuring Equipment and Metrology最新文献

{"title":"ANALYSIS OF VERIFICATION AND CALIBRATION METHODOLOGIES OF MEASURING INSTRUMENTS","authors":"V. Motalo","doi":"10.23939/ISTCMTM2019.01.051","DOIUrl":"https://doi.org/10.23939/ISTCMTM2019.01.051","url":null,"abstract":"The article focuses on the main problems of metrological confirmation of measuring instruments in accordance with international requirements and considers possible directions of their solution. One of the main tasks of metrology is assurance of the uniformity of measurements, that is, the state of measurements, in which their results are expressed in the legal units, and the characteristics of errors or uncertainty of measurements are known with a certain probability and do not exceed the established limits. The uniformity of measurements is ensured by the conformity of methods of measurements and measuring instruments to use for their intended purpose. In turn, the suitability of the measuring instruments to use for their intended purpose is determined by the conformity of their metrological characteristics with the established norms. Conformity assessment is the process of proving that the established requirements for a product, process, service, system, entity or body have been met. Metrological confirmation is a set of operations required to ensure that measuring equipment conforms to the requirements for its intended use. Metrological confirmation of measuring instruments generally includes their verification and calibration. Verification and calibration procedures of measuring instruments have both common features and certain differences. The procedure of the experimental part of the metrological confirmation of measuring instruments, both their verification and calibration, consists in comparing the indication ,1 ind х x of the measuring instrument, which is being verified, whether indication ,1 c х x of the measuring instrument, which is being calibrated, with the standard (reference) quantity value ,1 st х x . Consequently, in both procedures there is a common research object: in the verification procedure it is the indication ,1 ind х x of the measuring instrument, which needs to be verified; in the calibration procedure it is the indication ,1 c х x of the measuring instrument, which needs to be calibrated. Accordingly, the methods for implementing the verification and calibration procedures are practically identical. One of the key issues in the measuring instruments verification and calibration procedures is the question of estimating the accuracy and reliability of the obtained results. The error ,1 ind х x ∆ of the measuring instrument indication ,1 ind х x , which is being verified, is the measurand in the verification procedure, and it is determined as the result of indirect measurements. The combined standard uncertainty ( ) ,1 c ind x u x ∆ of the found error value ,1 ind х x ∆ is the accuracy estimate of the verification result. The actual quantity value ,1 act х x , that corresponds to the measuring instrument indication ,1 с х x , which is being calibrated, is the measurand in the calibration procedure. The expanded uncertainty ( ),1 P act х U x of the found actual value 1 act х x , with confidence level p is the accuracy es","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123447569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STAND FOR CHECKUP AND DIAGNOSTICS OF THE STATE OF INDUSTRIAL OBJECTS","authors":"R. Mygushchenko, Olha Kropachek, I. Korzhov","doi":"10.23939/istcmtm2019.04.031","DOIUrl":"https://doi.org/10.23939/istcmtm2019.04.031","url":null,"abstract":"","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129320004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PROBLEMS AND PROSPECTS FOR INDUSTRIAL ENTERPRISES IoT TECHNOLOGY APPLICATION","authors":"N. Maidaniuk","doi":"10.23939/ISTCMTM2019.01.027","DOIUrl":"https://doi.org/10.23939/ISTCMTM2019.01.027","url":null,"abstract":"","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132855145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"UNCERTAINTIES OF THE ESTIMATORS AND PARAMETERS OF DISTRIBUTION IN MEASUREMENTS WITH MULTIPLY OBSERVATIONS","authors":"M. Dorozhovets, A. Szlachta","doi":"10.23939/istcmtm2020.04.003","DOIUrl":"https://doi.org/10.23939/istcmtm2020.04.003","url":null,"abstract":"The article shows that the commonly used method of estimating the Type A uncertainty of measurements based on the standard deviation of estimators of population parameters does not meet the definition of uncertainty. For correct determination of the standard uncertainty, it is necessary to use the distribution of the corresponding population parameter at the values of population estimators determined from the experiment but not the probability distribution of the estimator. The joint probability distribution of population parameters can be derived by transforming the joint distribution of estimators using a Jacobian equal to the ratio of the scale parameter estimator to the population scale parameter itself. Independently on population distribution, the standard uncertainties of the location and scale parameters of the population depend on the number of observation n as a function of 3 1  n , i.e. can be determined when n ≥ 4. When the number of observations is small then the uncertainty value calculated by the usual method may differ significantly from the correct value. The given numerical example confirms this statement.","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130889328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ENSURING METROLOGICAL RELIABILITY OF MEASUREMENTS","authors":"E. Volodarsky, Ihor Pototskiy","doi":"10.23939/istcmtm2019.03.005","DOIUrl":"https://doi.org/10.23939/istcmtm2019.03.005","url":null,"abstract":"","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126857768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CALIBRATION OF QUARTZ ELECTRONIC STOPWATCHERS COMPARISON METHOD USING A DIGITAL CAMERA","authors":"O. Meshcheriak, O. Velychko","doi":"10.23939/istcmtm2022.03.023","DOIUrl":"https://doi.org/10.23939/istcmtm2022.03.023","url":null,"abstract":"Measurement of time intervals with low accuracy on intervals from a few seconds to several hours or days is relevant for some broad applications in various fields of activity. Such measurements are widely used in the technological processes of various enterprises during the preparation and quality control of the preparation of medicines, during the maintenance of technical equipment and mechanisms, chemical technological processes, etc. For such measurements, manual electronic quartz stopwatches are widely used, which, despite their not too high measurement accuracy, must guarantee users the accuracy of measurements within the tolerance established by the technical documentation, since the risks of using untested measuring equipment are quite high, or generally unacceptable especially in the medical field. The issue of calibrating quartz electronic stopwatches by various methods remains relevant for many of their applications. The article discusses the calibration of quartz electronic stopwatches by the method of comparison using a digital camera. A calibration scheme for stopwatches was developed and a calibration measurement model was created based on the developed calibration scheme. The contribution of each component of the measurement model to the calibration result and the corresponding uncertainties of the model components were determined. The measurement uncertainty budget was made based on the proposed stopwatch calibration model. The influence of the most significant influential values on the accuracy of measurement results was analyzed. The content of quantitative and qualitative correction indicators, which must be taken into account during calibration to achieve the highest accuracy of measurements, is revealed. The method of calibrating stopwatches described in the article can be used in calibration laboratories that have the appropriate equipment and standards.","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123191266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PREDICTIVE ASSESSMENT OF DIESEL FUEL QUALITY BASED ON WAVELET TRANSFORMATIONS","authors":"O. Shpak, Nazariy Velykiy","doi":"10.23939/istcmtm2023.02.005","DOIUrl":"https://doi.org/10.23939/istcmtm2023.02.005","url":null,"abstract":"The principle of device operation for determining the quality control of diesel fuel is considered, which helps to investigate the spectral characteristics of diesel fuel. Basic wavelet transformations are given. IR spectroscopy of diesel fuel from different producing countries was carried out, and determination of the cetane number through wavelet coefficients and determining conclusion diesel fuel quality were performed.","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126547845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RESEARCH OF LONG-TERM DRIFT OF THE NATIONAL INDUCTANCE STANDARD","authors":"O. Velychko, Maxym Dombrovskyi","doi":"10.23939/istcmtm2023.02.023","DOIUrl":"https://doi.org/10.23939/istcmtm2023.02.023","url":null,"abstract":"Inductance measurements is important for all branches of technology related to the application of electricity: energy and electronics, radio and television, transport and communication, and scientific research. Electromechanical devices and electronic components can be characterized using impedance measurements to identify the parameters of their equivalent electrical model. New inductance measurement methods are being developed in specific fields of activity. Manufacturers of standards and measuring instruments of inductance develop special handbooks outlining various methods of inductance measurement. The State Primary Standard of Ukraine for inductance and loss angle tangent reproduces and transmits a unit of inductance in the range from 1∙10-6 H to 10 H at a frequency of 1 kHz. It is keeping in the SE “Ukrmetrteststandard” and participated in several comparisons of national standards within the framework of the activities of regional metrological organizations. The calibration and measurement capabilities of inductance measurement of national laboratories of different countries were studied to analyze and compare the capabilities of the national standard with the standards of other countries. Long-term instability studies of inductance measures of 1 mH, 10 mH and 100 mH, which are part of the national standard unit of inductance, have been conducted. The research period covered from 2009 to 2022. It was established that the drift lines of the specified inductance measures can be described using linear approximations. The rationale for choosing inductance measures of 10 mH and 100 mH for their use as transmission standards in the calibration of standards, which were organized and conducted by SE “Ukrmetrteststandard” as their pilot laboratory, is given.","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121606877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ENCODING AND DECODING CONTROLLER AREA NETWORK FRAMES WITH THE USE OF THE CAN DATABASE","authors":"O. Ivaniuk, H. Vlakh-Vyhrynovska, R. Modla, Nazar Kulyk","doi":"10.23939/istcmtm2023.01.061","DOIUrl":"https://doi.org/10.23939/istcmtm2023.01.061","url":null,"abstract":"The article examines the features of building a Controller Area Network (CAN) in the automotive industry. The main steps for encoding and decoding physical values in CAN and CAN FD (CAN with flexible data rate) frames are provided. The syntax of messages and signals in CAN DBC has been analyzed. An example of a DBC file that can be used to encode and decode the speed and engine speed of a truck is reviewed. Based on the Linux operating system and the python programming language, an experimental scheme of a virtual controller area network was created, which encodes data on one node and decodes data on the other using CAN DBC.","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"454 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116073094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DEVELOPMENT OF SYSTEM OF PROVIDING METROLOGICAL RELIABILITY OF MEASURING INSTRUMENTS","authors":"M. Mykyychuk, N. Lazarenko, S. Lazarenko, A. Riznyk","doi":"10.23939/istcmtm2019.03.053","DOIUrl":"https://doi.org/10.23939/istcmtm2019.03.053","url":null,"abstract":"","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115980306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}