Measuring Equipment and Metrology最新文献

{"title":"MODELING A NETWORK OF UNMANNED AERIAL VEHICLES","authors":"M. Mykyjchuk, Nataliya Zihanshyn","doi":"10.23939/istcmtm2021.03.042","DOIUrl":"https://doi.org/10.23939/istcmtm2021.03.042","url":null,"abstract":"The research concerns the methods of UAV group control in networks with duplex communication between nodes built on the \"client-server\" architecture. Such systems belong to self-organized networks with variable topology. It is important to study the allowable parameters of deviation from the task in the management of a group of UAVs and analysis of the network topology for the group flighting. The network was optimized according to the Ant Colony algorithm ACO. The application of different types of algorithms prevents routing problems in networks, such as ANTMANET, AntNet, ACODV and others. Methods of coordination of group joint actions are considered. A method is proposed by which the optimal number of UAVs operated by one operator can be determined and the traffic intensity of the communication channel is calculated, as well as the bandwidth and packet transmission delay are estimated.","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"104 2 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":"116610181","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":"STANDARDS OF SOCIAL RESPONSIBILITY IN THE ACTIVITIES OF THE CLINIC - DIAGNOSTIC LABORATORIES","authors":"I. Sydorko, A. Petrukh, R. Baitsar","doi":"10.23939/istcmtm2019.04.009","DOIUrl":"https://doi.org/10.23939/istcmtm2019.04.009","url":null,"abstract":"","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"162 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":"115140054","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 ANALYZERS OF THE MOBILE COMMUNICATION SYSTEM PARAMETERS","authors":"O. Meshcheriak, O. Velychko","doi":"10.23939/istcmtm2022.03.030","DOIUrl":"https://doi.org/10.23939/istcmtm2022.03.030","url":null,"abstract":"The creation and operation of mobile communication systems is impossible without determining the parameters of base stations and mobile communication systems. For these purposes, appropriate devices are used that optimally combine testing capabilities in a single portable solution, which eliminates the need for several separate control and measuring devices. One of the main types of measurements of such devices is the measurement of the power of ultra-high and extremely high frequency signals. The article presents the method of calibrating meters of directional and absorbed power of ultra-high and extremely high frequency signals using the Bird 5000-EX mobile communication system parameter analyzers complete with the Power Sensor 5010V sensor and measuring sensors, Anritsu CellMaster MT8212EA and Arnitsu SiteMaster S331E spectrum analyzers. Calibration schemes for analyzers of parameters of mobile communication systems and analyzers of mobile communication base stations (hereinafter referred to as analyzers) have been developed. A measurement model of the analyzers based on the parameters of the directional and absorbed power of ultra-high and extremely high frequency signals based on the developed calibration schemes was created. 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 analyzer calibration model. The influence of the most significant influential values on the accuracy of measurement results was analyzed. The content of quantitative and qualitative indicators of corrections, which must be taken into account during calibration to achieve the highest accuracy of measurements, is revealed. The practical results of studies of measurement instability are given. The analyzer calibration method 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":"135 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":"127595052","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":"ELECTROKINETIC CHARACTERISTICS OF STRUCTURALLY DISORDERED BINARY ALLOY Ni1-xPx","authors":"B. Stadnyk, Pylyp Skoropad, S. Yatsyshyn","doi":"10.23939/istcmtm2022.01.005","DOIUrl":"https://doi.org/10.23939/istcmtm2022.01.005","url":null,"abstract":"The paper presents the results of studies of the temperature dependences of the resistivity ρ(T) and the Seebeck coefficient S(T) of binary structurally disordered alloys of the Ni1-xPx system. It was found that at 0.10 < x 0.18. The resistivity ρ increases with x, the temperature coefficient of electrical resistance α decreases and becomes negative, and S also increases and becomes positive near x=0.18. These results agree with the Mooij correlation and the r-S correlation for the studied samples, namely for samples with high resistivity S> 0 and for samples with low resistivity - S <0, which is observed in some non-magnetic structurally disordered alloys. Thus, the Ni1-xPx system covers the range and behavior of electrokinetic characteristics that are characteristic of a few structurally disordered alloys. For x <0.175 dependencies r(T) and S(T) of the studied samples are similar to those observed in ferromagnetic structurally disordered iron-based alloys.","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":"128151501","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":"CHARACTERISTICS OF THERMOMETRIC MATERIAL Lu1-xScxNiSb","authors":"V. Pashkevych, V. Krayovskyy, A. Horpenyuk, V. Romaka, Y. Stadnyk, L. Romaka, A. Horyn, V. Romaka","doi":"10.23939/istcmtm2022.02.021","DOIUrl":"https://doi.org/10.23939/istcmtm2022.02.021","url":null,"abstract":"The results of modeling the properties of the semiconductor solid solution Lu1-xScxNiSb, x=0–0.10, which is a promising thermometric material for the manufacture of sensitive elements of thermocouples, are presented. Modeling of the electronic structure of Lu1-xScxNiSb was performed by the Korringa-Kohn-Rostoker (KKR) method in the approximation of coherent potential and local density and by the full-potential method of linearized plane waves (FLAPW). KKR simulations were performed using the AkaiKKR software package in the local density approximation for the exchange-correlation potential with parameterization Moruzzi, Janak, Williams. The Elk software package was used in the FLAPW calculations. To check the limits of the existence of the thermometric material Lu1-xScxNiSb by the KKR method, the change of the values of the period of the unit cell a(x) in the range x=0–0.10 was calculated. It is established that the substitution of Lu atoms in the crystallographic position 4a by Sc atoms is accompanied by a decrease in the values of the unit cell period a(x) Lu1-xScxNiSb. This behavior of a(x) Lu1-xScxNiSb is since the atomic radius Sc (rSc=0.164 nm) is smaller than that of Lu (rLu=0.173 nm). In this case, structural defects of neutral nature are generated in Lu1-xScxNiSb, because the atoms Lu (5d 1 6s 2 ) and Sc (3d 1 4s 2 ) are located in the same group of the Periodic Table of the Elements and contain the same number of d-electrons. To study the conditions for obtaining thermometric material Lu1-xScxNiSb, x=0–0.10, and to establish the energy feasibility of its formation in the form of a continuous solid solution, modeling of thermodynamic characteristics in the approximation of harmonic oscillations of atoms within the DFT density functional theory. The low values of the enthalpy of mixing ΔHmix(x) and the nature of the dependence behavior indicate the energy expediency of substitution in the crystallographic position 4a of Lu atoms for Sc atoms and the existence of a solid substitution solution for the studied samples Lu1-xScxNiSb, x=0–0.10. To understand the mechanisms of electrical conductivity of the thermometric material Lu1-xScxNiSb, x=0–0.10, various models of crystal and electronic structures of the basic semiconductor LuNiSb are considered. Assuming that the crystal structure of Lu1-xScxNiSb is ordered (crystallographic positions are occupied by atoms according to the MgAgAs structural type), the Elk software package was used to model the DOS electronic state density distribution for LuNiSb and Lu0.875Sc0.125NiSb. It is shown that in the LuNiSb compound the Fermi level lies in the middle of the band gap , and the bandwidth is =190.5 meV. DOS simulations for the ordered variant of the Lu0.875Sc0.125NiSb crystal structure show a redistribution of the density of DOS electronic states and an increase in the band gap . In this case, the Fermi level , as in the case of LuNiSb, lies in the middle of the band gap , and the generated structura","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"485 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":"133731330","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":"STUDY OF THERMAL STABILITY OF METAL GLASSES OF METAL - METAL AND METAL – METALOID SYSTEMS FOR THERMOMETRY PURPOSES","authors":"B. Stadnyk, Pylyp Skoropad, Vitaliy Mykhalov, Yuriy Nakonechnyi","doi":"10.23939/istcmtm2021.01.016","DOIUrl":"https://doi.org/10.23939/istcmtm2021.01.016","url":null,"abstract":"The metastable metallic glasses are studied in the paper. Their properties as the material for producing the sensitive elements of thermometric transducers depend on the peculiarities of manufacturing the mentioned material. The selection of modes of glass production and the correction of modes facilitates to increase in the operating temperatures of the transducers or/and extends their service life.","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"58 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":"134235259","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":"METROLOGICAL SUPPORT OF MEASURING TECHNOLOGY Of AIRCRAFT REFUELING SERVICES","authors":"Oleh Romanchukevych, Alla Ivanyshyn","doi":"10.23939/istcmtm2023.02.030","DOIUrl":"https://doi.org/10.23939/istcmtm2023.02.030","url":null,"abstract":"The article investigates the possibility of carrying out verification of volumetric liquid meters at the place of operation and presents the procedure for carrying out such verification. The issues of metrological support of measuring instruments (MI) of the aircraft refueling service are considered. The data on the verification of measuring instruments of the aircraft refueling service in the EU member states are presented.","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"162 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":"115222915","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":"MEASUREMENT OF COORDINATES OF UNMANNED AERIAL VEHICLE RADIO BEАCON","authors":"V. Chyhin","doi":"10.23939/ISTCMTM2019.01.012","DOIUrl":"https://doi.org/10.23939/ISTCMTM2019.01.012","url":null,"abstract":"","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"28 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":"115581000","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":"INVESTIGATION OF KINETIC CHARACTERISTICS OF SENSITIVE ELEMENTS OF THERMOCONVERTERS BASED ON Ti1-xMoxCoSb","authors":"V. Krayovskyy, M. Rokomanyuk, V. Romaka, Y. Stadnyk, L. Romaka, A. Horyn","doi":"10.23939/istcmtm2019.03.028","DOIUrl":"https://doi.org/10.23939/istcmtm2019.03.028","url":null,"abstract":"Mathematical modeling and experimental measurements of the kinetic and energy characteristics of the sensitive elements of thermo converters based on the thermometric material Ti1-xMoxCoSb in the temperature range 80-400 K was carried out. Previous studies of the electrophysical, energetic, and structural properties of thermometric materials obtained by doping the TiCoSb semi-Heisler phase with Ni and V atoms respectively have shown that they are inherent in the stable and reproducible characteristics at 4.2–1000 K. It was revealed that the results of modeling the thermometric characteristics of the sensitive elements based on TiCo1-xNixSb and Ti1-xVxCoSb did not agree with the experimental results. This made impossible to use the mentioned materials for the manufacturing the sensitive elements of resistance thermometers and thermoelectric transducers. Modeling of Electronic Structure of Ti1-xMoxCoSb Thermometric Material with help of The Korringa–Kohn–Rostoker (KKR) Green Function Method in Coherent Potential Approximation and Local Density Approximation using AkaiKKR and SPR-KKR Software of the exchange-correlation potential with the parameterization of Moruzzi-Janak-Williams have envisaged that the substitution of Ti at Mo generates structural defects of the donor nature in the crystal (Mo has more 3d electrons than in Ti), and in the bandgap near the conduction band εC impurity donor level (zone) 2 D ε . Measurements of the electrokinetic characteristics of Ti1-xMoxCoSb Вимірювальна техніка та метрологія. Том 80, вип. 3, 2019 р. 29 thermometric materials determined the presence of high-temperature activation sites on the specific resistance of ln(ρ(1/T)), indicating the location of the Fermi level εF in the Forbidden Zone of a Semiconductor, which is possible under the condition of generating acceptors that capture free electrons, reducing their concentration, and slowing the movement of the Fermi level to the level of the conductivity zone. Thus, doping the TiCoSb compound with the Mo admixture produces the generation of structural defects of the acceptor and donor natures in the crystal. Mechanisms of electrical conductivity of sensing elements of thermo converters are established.","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"154 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":"123094055","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":"OPEN-SCIENCE SPACE ISSUE: CALIBRATION OF MEASURING CHANNELS OF NON-DISMANTLING CYBER-PHYSICAL SYSTEMS","authors":"B. Stadnyk, V. Yatsuk, M. Mykyjchuk, S. Yatsyshyn, Tomáš Fröhlich, R. Mastylo","doi":"10.23939/istcmtm2021.03.012","DOIUrl":"https://doi.org/10.23939/istcmtm2021.03.012","url":null,"abstract":"The analysis of the concept of Open-Science Space is carried out. The existence of ways to achieve reproducibility and traceability of research results performed by a group of worldwide situated Cyber-physical system operators/supervisors is shown. Ways to ensure the efficient operation of Cyber-physical systems as complex technological nondemountable objects with high requirements for metrological characteristics have been studied. To develop the scattered cyberphysical systems, the portable stable-in-time code-controlled measures of physical quantities have been studied. They have to be metrologically confirmed in the laboratory before the delivery to the site of the measuring subsystem for its calibration.","PeriodicalId":415989,"journal":{"name":"Measuring Equipment and Metrology","volume":"8 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":"124742704","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}