В збірник включені статті, що відображають наукові та практичні результати сучасних розробок технології машино- та приладобудування, інформаційно-вимірювальних технологій та телекомунікацій, електроніки; вимірювальної та радіотехніки, особливості експлуатації та повірки засобів вимірювань, медичних приладів і систем. Представленні сучасні досягнення та перспективні напрямки розвитку технології виготовлення та складання машин і приладів в різних галузях народного господарства. Основні наукові спеціальності: 131 Прикладна механіка; 132 Матеріалознавство; 133 Галузеве машинобудування; 163 Біомедична інженерія; 171 Електроніка; 172 Телекомунікації та радіотехніка; 174 Автоматизація та комп′ютерно інтегровані технології; 175 Інформаційно-вимірювальні технології; 176 Мікро-та наносистемна техніка.
THE STUDY OF MANDREL PARAMETERS WITH WOUND ELASTIC TAPE SCREW CLAMPING ELEMENTS
The article presents the design and three-dimensional model of a mandrel with wound elastic tape screw clamping elements. The advantage of such mandrels is the ability to clamp thin-walled cylindrical workpieces by distributing the clamping force over the entire contact surface between the workpiece and the elastic screw clamping element. The parametric equations of the surface of a screw clamping element with conical parts are presented. The calculation scheme of the geometrical parameters of clamping the workpiece with a screw clamping element with conical parts was developed. The equation for determining the axial force that must be applied to the end of a screw clamping element with conical parts during its deformation is derived. Graphs of the dependence of the axial force applied to the end of the screw clamping element with conical parts when clamping the workpiece on the geometric parameters of the screw clamping element were constructed. The stress-strain state of a mandrel with an elastic screw clamping element and a workpiece fixed on it under the action of an external radial force was studied using the finite element method.
mandrel, wound clamping element, tape screw clamping element, deformation, axial force, stress-strain state.
Diachun A., Fedorevych V., Grasovnyk V., Gynda T., Derysh O.
Copyright (c) 2025 Perspective technologies and devices
METHOD OF CALIBRATION OF SINGLE-CHANNEL ELECTROCARDIOGRAPHS
The article describes the method of calibration of single-channel electrocardiographs, the measurement results of which determine medical treatment strategies for patients. Therefore, it is important that the device is accurate, because incorrect measurements can lead to incorrect diagnosis and subsequent complications. Ensuring the accuracy of electrocardiograph measurement results improves the reliability of medical conclusions, and timely calibration allows you to identify problems and eliminate them before serious problems arise. The methods and means of electrocardiograph calibration, the conditions for electrocardiograph calibration and preparation for it are considered. The method of electrocardiograph calibration is described.
electrocardiograph, calibration, error, diagnostics, accuracy, sensitivity, pulse, signal, recording.
The development of information technologies at the present stage requires the development of new, more modern and more complex electronic equipment. Devices with controllable characteristics are being increasingly introduced. A separate direction of development of such devices is the development of circuits with the possibility of switching the circuit during operation without the need for its dismantling and reassembly. One of the possible ways to effectively solve this problem is the development of optically switched circuits. Optical switching provides a number of advantages over other switching methods, the main of which are the complete absence of electrical influence of the control circuit on the controlled circuit, the simplicity of the process of rapid reconfiguration of the circuit, as well as resistance to the influence of external electric and magnetic fields. This work shows the principle possibility of creating devices with optical switching of the circuit without the need to perform dismantling and assembly operations of this device. The paper presents the results of research on a logic circuit assembled on the basis of discrete electronic components, which can be optically switched as a logical 2AND-NOT element or as a logical 2OR-NOT element.
photoconductivity, commutation, semiconductors, optical control, logic circuits.
Tatarchuk D., Didenko Yu., Poplavko Yu., Boikynia A., Tkachenko N., Oliinyk O.
TECHNICAL AND ECONOMIC SUBSTITUTION OF METHODS FOR MANUFACTURING SCREW ROLLERS EQUIPPED WITH BLADES, CUTTING AND CRUSHING ELEMENTS
The article presents and analyzes five technological methods for manufacturing blade, cutting, or grinding elements on winding spirals with their main design and technological parameters. In particular, three methods with the predominant use of manual labor and two mechanized ones. It has been established that the first three methods are high-cost, low-productivity, and labor-intensive, and do not provide high manufacturing accuracy, but can be widely used in single-unit production. The fourth method is much more effective in technical and economic terms, however, in the process of its implementation, the manufactured elements are gradually superimposed on each other, which leads to a gradual reduction in the curved profile on subsequent elements and the loss of their given geometric shape. The most effective is the fifth method, which eliminates the main disadvantages of the previous methods and ensures their production with significantly higher quality characteristics. The results of the economic calculation of the production cost of manufacturing blade, cutting or grinding elements on a winding spiral with a length of 1 m/s showed that its value for the first method is 537.46 UAH, for the second method - 505.0 UAH, for the third method - 1127.81 UAH, for the fourth method - 166.83 UAH, and for the fifth method it is the smallest and is 148.08 UAH
spiral, auger, blades, shredders, screw blank, method, operation, equipment, feasibility study.
Ivan Нevko, Oleg Stibailo, Roman Leshchuk, Andrii Gupka, Oleg Hurik
АНАЛІЗ СУЧАСНИХ ТЕХНОЛОГІЙ КОНТРОЛЮ ВИРОБІВ АДИТИВНОГО ВИРОБНИЦТВА
The use of new production technologies allows to improve the quality of products, however, increasing the production rate requires a higher speed of operation of existing product control technologies or the use of new effective approaches. The article describes modern technologies for product quality control to ensure the competitiveness of products and their demand in the market, taking into account the specifics of product formation. The most promising methods of modern product control technologies are computed tomography, which is used for detailed control and analysis of various products and objects; the use of optical sensors for two-dimensional analysis of products; the use of fiber-optic instruments in coordinate measuring machines.
control, computed tomography, model, part, object, measurement, product, analysis, sensor, accuracy, defect, quality.
BLUETOOTH HEADPHONES WITH MEDICAL DIAGNOSTIC FUNCTIONS
As a result of the research, an innovative technological product was developed - Bluetooth headphones with medical diagnostic functions. Such integration allows users to receive data about their health status without the need for additional specialized devices, which makes the process of medical monitoring more convenient and accessible. Using morphological analysis methods, a structural and schematic synthesis of Bluetooth headphones with medical diagnostic functions was carried out, which allowed us to identify 20 potential design options. Of these options, four of the most effective with medical and diagnostic functions were selected by experts, which represent an integrative solution to modern challenges in the field of medicine, technology, and social inclusion. The created Bluetooth headphones are medical diagnostic tools that allow monitoring of various physiological parameters of users in real time. In particular, the principles of operation of Bluetooth headphones with the functions of a hearing aid, pulse oximeter, stuttering correction and otoacoustic emission have been developed and described. In more detail, the paper substantiates the main technical and mathematical aspects of the functioning of a Bluetooth headset with the function of an otoacoustic emission recorder, which allows assessing the functional state of the inner ear structures, in particular the outer hair cells, which are most sensitive to various damaging factors. It can be used to diagnose hearing impairments early, even before subjective symptoms appear.
Bluetooth навушник, медико-діагностична функція, моніторинг, синтез.
RADIATION STABILITY OF ELECTRON-IRRADIATED n-Ge SINGLE CRYSTALS
The dependences of the resistivity on the electron irradiation flow with the energy of 10 MeV for germanium single crystals, doped by the antimony at different temperatures were investigated. All the obtained dependences are characterized by the presence of a maximum, which is associated with the maximum degree of compensation of the irradiated n-Ge single crystals and the most effective scattering of electrons on the created radiation defects for a certain irradiation flow. It was established that the resistivity of n-Ge decreases due to the ionization of deep levels of radiation defects and an increase in the mobility of current carriers with increasing temperature. A Significant decrease in the resistivity of germanium is observed when passing through the maximum for the flows of Ф≥2·1016 el./cm2, which is explained by an increase in the concentration of current carriers due to the n-p-conversion of the conductivity type of germanium. The highest radiation resistance to electron irradiation is possessed by n-Ge single crystals, irradiated by multiple smaller electron flows than Ф=5·1015 el./cm2or flows of Ф>2·1016 el./cm2. The obtained results are important in the design and operation of electronic devices and sensors made on the basis of germanium that operate in fields of increased radiation.
n-Ge single crystals, electron irradiation, resistivity, radiation defects, radiation resistance, degree of compensation.
STUDY OF THE RADIAL-CIRCULAR GEAR CUTTING PROCESS, WHICH IS PERFORMED WITH DIFFERENT FEED DIRECTION
The results of the study of the process of gear cutting by the radial-circular method, carried out according to two schemes - with axial and radial feed. The studies, based on the analysis of the parameters of the cuts, chip deposition, cutting forces and the cutting time of the operation, showed that they differ significantly in all the analysed parameters. In the case of cutting with radial feed, the intensity of the process is significantly higher and the main machining time is reduced. At the same time, an increase in the cutting force threatens to increase the elastic deformation of the thin disc cutter as a cutting tool, which in this method performs the cutting movement and gear profile formation under conditions of continuous tooth generation, as is the case in hobbing and pover skving. This can lead to a reduction in machining accuracy and increased tool wear. In addition, radial cutting is limited to gears of small width, but there is no additional cutting path and runout, and the machining time is reduced. The optimum gear cutting scheme is a combination of two methods - starting cutting with radial feed to eliminate the cutting path, followed by a transition to cutting with axial feed over the full width of the gear.
gear cutting, radial-circular method, radial feed, axial feed, process parameters, efficiency
TRANSIENT PROCESS OF A SOLAR PANEL AS THE BASIS OF A DYNAMIC METHOD FOR MEASURING ITS ELECTRICAL PARAMETERS AND CHARACTERISTICS
The use of solar energy in measurement technologies encourages the search for original circuit solutions. An example of this is the use of the Mendocino motor, a feature of which is levitation magnetic suspension and commutation of the rotor windings based on periodic changes in the illumination of solar panels located directly on the rotor itself. Analysis of the transient process of a solar panel provides the ability to measure the series resistance of a solar panel. This method is an alternative to the measurement method based on obtaining several current-voltage characteristics at different illumination. The development of a dynamic method for measuring the electrical parameters and characteristics of solar panels received a significant and essential boost with the creation of a means of their non-contact measurement.The transient process of a solar panel is the basis for a dynamic method of measuring its electrical parameters and characteristics. In particular, the period of free oscillations in the current sweep circuit in the initial phase of the short-circuit mode measures the electrical capacitance of the solar panel, and the decay decrement measures its series resistance.
Illumination, Mendocino engine, solar energy, solar panel, transients, free oscillations.
ADAPTIVE MONITORING OF COGNITIVE OPTICAL NETWORKS TO ADDRESS THE PROBLEM OF LIMITED INFRASTRUCTURE INTEGRITY VISIBILITY
The paper examines the relationship between optical network maintenance and security management systems. Changes in monitoring efficiency requirements and the uninterrupted operation of infrastructure are analyzed. Based on the study of anomalies associated with intentional and unintentional damage in PON networks, a cognitive monitoring algorithm is proposed that integrates spectral analysis of optical signals with machine learning methods. The proposed approach enhances the accuracy of fiber-optic infrastructure diagnostics, reduces the impact of weakly attenuated modes, and enables real-time fiber degradation prediction. Simulation results demonstrate that the use of multispectral analysis and adaptive anomaly classification methods can reduce fault detection time by 40–50%, lower maintenance costs by 30%, and decrease the frequency of critical failures by 35–40%. The proposed solution contributes to the development of more reliable and secure PON networks capable of adaptively responding to both technical and cyber threats.
passive optical network, monitoring, OTDR reflectometry, adaptability, cognitive networks.
MATHEMATICAL MODEL OF A MICROWAVE ABSORBING MATERIAL
In this paper, a mathematical model of a multilayer microwave absorbing coating is proposed, and an analysis of its main characteristics is carried out. The theoretical dependence of the reflection coefficient on the main material characteristics has been determined. The influence of dielectric and magnetic permeabilities on the reflection coefficient of the proposed system has been studied, and optimal system parameters for effective absorption of electromagnetic waves in the frequency range of 2–18 GHz have been identified. The mechanism of electromagnetic energy absorption in a dielectric material within the specified frequency range has been analyzed. Dependencies of the complex dielectric and magnetic permeabilities of the model material have been constructed and analyzed. Reflection coefficient dependencies of the vacuum-material-ideal conductor system have been constructed. The analysis of experimental studies revealed potentially promising composite materials, in particular, graphene foam (CGF), which demonstrates a high level of absorption. Further research should focus on improving the composition and mechanical properties of such materials.
microwave absorbing material, reflection coefficient, mathematical model, complex dielectric permittivity, complex magnetic permeability, graphene.
MULTISENSOR MEMS-BASED PLATFORMS FOR GAS ANALYSIS
The paper presents a comparative analysis of various multisensor MEMS-based platforms for gas analysis. For effective detection of gas mixtures and individual gases, it has been found that measurement results such as sensor sensitivity, response time, and selectivity are confirmed by theoretical and experimental studies. The obtained data suggest that the use of multisensor MEMS-based platforms is promising for accurate and rapid gas analysis, as they combine high sensitivity with the capability of simultaneous monitoring of multiple parameters. The analysis results indicate that for certain types of gases, it is advisable to use a platform with integrated sensors capable of detecting multiple parameters of gas mixtures, providing more accurate results compared to the use of individual sensors.
MEMS, multisensor platforms, gas sensors, thermal sensors, photoacoustic sensors, electrochemical sensors, separation columns, preconcentrators, autonomous sensors.
STANDARDIZATION OF CERTAIN PROVISIONS IN THE FIELD OF ARTIFICIAL INTELLIGENCE TECHNOLOGY
The article considers and analyzes the international regulatory framework of standards of the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC) related to AI technology, which has almost 400 standards. The focus is on several key AI standards that provide a framework for the responsible and ethical use of AI technologies. An overview of the scope of their application is given. The standards specified in the article cover such areas as: terminology and concepts of artificial intelligence; control system; risk management; confidentiality; Bias; transparency; accountability, etc. By adhering to these standards, organizations can work to ensure that their AI systems are fair, transparent, and ethical. Based on the analysis, it is shown that artificial intelligence is increasingly used in all sectors that use information technology. Taking this into account, it is proposed to include in the annual programs of work on national standardization the adoption and/or development of harmonized ISO and IEC standards for artificial intelligence.
information technology, artificial intelligence, standard, management system, structure of artificial intelligence systems.
INFLUENCE OF SPEED OF DEFORMATION ON CUTTING FORCE
In the article, a study of the influence of the deformation rate on the change in the resistance forces was carried out. It is known that the experimental points do not coincide with the power line of the trend and this situation is explained by the error of the experiment. Analysis of the results of work obtained under different conditions by different researchers showed the possibility of a sinusoidal dependence of the cutting force on the cutting speed. To test this hypothesis, the cutting speed was changed by changing the diameter of the processed part at a constant spindle speed. This approach excludes the possible influence of rotations of machine parts. The results (values ​​of cutting forces) obtained in this way during turning made it possible to predict the extreme values ​​of the functions. They are not related to the rotation of the machine parts, which confirms the influence of only the deformation rate on the sinusoidal dependence of the resistance force.
speed, deformation, force, cutting, sinusoid, dependence
Copyright (c) 2024 Perspective technologies and devices
USING THE DECISION-MAKING MODULE OF THE SMART ACCESS CONTROL SYSTEM FOR ORGANIZATION
The article presents the development of a web application, with its core component being a decision-making module within a smart system. Based on a review and comparison of existing technologies underpinning access control systems specifically those based on mechanical locks, magnetic cards, biometric systems, and RFID technology the architecture of the web application was designed, and an algorithm for the decision-making module was developed. This algorithm is built on the proposed solutions and incorporates dynamically generated access keys in the form of barcodes. This approach ensures convenience, efficiency, and simplicity in the step-by-step design and implementation of a smart access control system that provides semi-autonomous, and if necessary, fully autonomous access control to specific locations and resources of an organization. The testing and validation of the research results were carried out within the units of Lutsk National Technical University. The proposed solution is also applicable to organizations of various forms of ownership with multiple structural divisions, campuses, and venues for mass events where managing access for employees, visitors, and participants is essential.
access control, web application, real time control.
PRINCIPLES OF OPERATION AND APPLICATION OF GPS
This paper critically analyzes recent research and publications related to the Global Positioning System (GPS), and discusses and describes the basic principles of GPS operation. A detailed analysis of the most famous (most cited) publications by reputable world scientists demonstrates a wide range of applications of GPS, as well as possible ways to use it to solve problems in the near future. Instrumentation of the physical and technical world through huge networks of wireless sensor nodes, in particular for problems such as environmental monitoring, requires that these nodes be very small, light, untethered, and unobtrusive. The problem of localization, where a given node is physically located in the network, is complex but extremely important for many of these applications. The high cost of data collection for many applications in Earth sciences is exacerbated by the remoteness and inaccessibility of many field sites, which makes cheaper, more portable geodetic platforms (e.g., terrestrial laser scanning or GPS) impractical.
Global Position System, publications, applications, instrument making.
THE EFFECT OF BIOLOGICAL FEEDBACK IN BIOTECHNICAL SYSTEMS
This article considers problematic issues in the synthesis of a technical system with the presence of an object of biological origin using classical management theory. Biological feedback plays a key role in maintaining the relative dynamic stability of parameters and functions. In order to obtain the programmed properties of the system and to evaluate the quantitative changes that occurred in the system during the obtaining of qualitative shifts in the properties of the biological object, the conditions for solving the problem of the reverse synthesis of the sensor as a part of the biotechnical system were considered. The goal is to formalize cause-and-effect relationships in order to obtain an alternative to the subjectivism of expert evaluation. Reproduction of the behavior of the control system is considered from the point of view of the modeling method based on electrobioanalogies as a factor influencing the architecture and functional principles of neuromorphic solid-state sensors.
biotechnical systems, intelligent control systems, solid-state components, digital information technologies, neural networks.
DYNAMIC MODEL OF THE WINE MATERIAL FERMENTATION PROCESS
The developed dynamic model of the wine material fermentation process allows you to accurately reproduce the processes that occur during fermentation and provides flexibility in controlling the variables that affect the final quality of the product. The model takes into account random disturbances in temperature and sugar levels, which brings the simulation closer to real production conditions where external factors can change. The use of this model in practice can help to improve production efficiency and the stability of wine material characteristics.
wine material, control, model, technological parameters, microcontroller ADAM-5000.
PROSPECTS OF USING THE ERP SYSTEM “ODOO” IN HIGHER EDUCATIONAL INSTITUTIONS ON THE EXAMPLE OF LUTSK NATIONAL TECHNICAL UNIVERSITY
The article examines the role and opportunities provided by the use of an automated resource management system (ASUR) in higher education institutions (HEIs) to optimize administration, improve the quality of service to applicants and simplify management processes. The article also provides a comparative analysis of solutions such as “ERP SAP”, “ERP NEXT” and “ERP Odoo”, and assesses their capabilities and limitations in the context of use in higher education institutions. The key advantages of implementing ASUR based on “ERP Odoo” and potential challenges are explored, in particular the issues of integrating this system with the student’s electronic office, staff training and ensuring data security. The process of implementing “ERP Odoo” to address the current administrative needs of higher education institutions is separately highlighted using the example of the solution developed for Lutsk National Technical University.
automated management, resource management system, ERP.
CONTROL OF THE VALUE OF TRANSIENT RESISTANCES OF THE NEUTRAL WIRE OF THE ELECTRIC NETWORK TO PREVENT FIRE
The article analyzes the causes of emergency operation of electrical networks in old buildings, where the saturation of premises with technical life support systems has increased significantly, resulting in an increased load on electrical networks that exceeds the calculated values ​​and causes frequent emergency shutdowns of the electrical network that has not been inspected in a timely manner. The article examines the effect of a break in the neutral conductor on an emergency situation in the electrical network, which can lead to an overload of some electrical networks and a decrease in voltage in others, as a consequence - an increase in the temperature of the electrical network conductors, which leads to ignition of surrounding building structures and a fire. The article examines the effect of the neutral conductor on the balance of the system and the flow of compensatory current through the neutral conductor and the influence of various factors that can lead to an emergency situation. The need for further searches for technical solutions to protect electrical networks from high transition resistance as a result of a break in the neutral conductor is substantiated.
fire, electrical ignition source, neutral, electrical equipment; zero wire; high transition resistance, phase voltage asymmetry.
APPLICATION OF PLASMONICS FOR ASSESSING WATER PURIFICATION EFFICIENCY
This paper examines the use of plasmonic sensors for evaluating the efficiency of water purification processes after filtration. Particular attention is given to the advantages of this method compared to traditional approaches, as well as the possibility of its implementation for real-time monitoring. The results demonstrated the effectiveness of filtration devices based on activated carbon and ion-exchange resins in purifying tap and artesian drinking water. The resonance angle for artesian drinking water after filtration changed by a factor of 2.5, and for tap water after filtration, it changed by nearly 7 times. The reduction in salts in the samples was confirmed by a decrease in electrical conductivity. Experimental studies revealed that after filtering tap water, the ammonium content increased twofold, which may be associated with the accumulation of organic or inorganic substances in the sample over time, creating favorable conditions for bacterial activity. This finding indicates the need for additional water purification methods targeting microorganisms, beyond chlorination. The research highlights the potential of using plasmon resonance-based sensors to evaluate water purification efficiency and to monitor the effects of various disinfection methods.
sensor, plasmon resonance, kinetics, filters, water purification.
FEATURES OF GENERATING THE OUTPUT SIGNAL OF THE INFRARED RADIATION SENSOR
The paper deals with infrared radiation detectors that can register the thermal radiation of a living organism. The human body has a temperature in the range from 31°C to 42°C, depending on the heat exchange between the skin and the environment, and infrared radiation in the wavelength range from 4 to 50 microns. The analysis of the phenomenon of the pyroelectric effect and the features of the use of pyroelectric sensitive elements, which are the basis of the operation of the sensors, has been carried out. The principles of the formation of thermal radiation in the detection zone of the sensor are given, and the formulas for determining the amount of radiation of the thermal flux are presented. The process of forming the output signal during the action of thermal energy on the sensor was studied. It has been established that for the rational use of methods and algorithms for improving the interference immunity of an infrared sensor, it is necessary to know the main parameters of the signal, namely the amplitude, shape, duration, dependence on the speed of human movement, and background temperature. Experimental graphs of the shape and spectrum of the signal at the input of the pyroelectric sensor under different input conditions are presented. The influence of temperature contrast on the formation of the sensor output signal is analyzed.
sensitive element, pyroreceiver, IR radiation, signaling, sensitivity zone.
CONTROLLING THE ACCURACY OF TRAJECTORY MOVEMENTS OF MACHINE TOOL ACTUATORS ON HYDROSTATIC BEARINGS
The article is devoted to improving the accuracy and productivity of heavy machine tools by developing and applying adaptive hydrostatic spindle bearings. A literature review was conducted and the relevance of finding new ways to improve accuracy, in particular through the use of advanced designs of bearing units, was proved. The main direction of research is the search for ways to improve machining accuracy on heavy-duty lathes by means of adaptive control of the technological system parameters. It has been established that the use of hydraulic supports with fluid friction is very promising in machine tool construction, and for heavy machine tools such supports are, in some cases, the only design option that provides the required performance characteristics of the units - high load-bearing capacity, durability, rigidity, accuracy, etc. The possibility of using calculation methods based on the implementation of the finite element method is shown. Specific recommendations for the calculation and design of hydrostatic spindle assemblies are given.
hydrostatic bearing, accuracy, productivity, machine tool, spindle assembly.
DEVELOPMENT OF AN IMPROVED METHOD OF COMPLEX EXPRESS QUALITY CONTROL OF VARNISHES AND PAINTS
This article analyzed the main characteristics of different types of paints. Defined requirements for paint property depending on conditions and methods of use. Established the property list of paint and varnish materials that determine its quality. Defined dependence to property of paints from the type of shape, structure and porosity of the surfaces that they are applied on. The existing methods of control of individual properties of paints and varnishes are analyzed. The need to develop a comprehensive method of express quality control of paint and varnish material to ensure its quality control in the specific conditions of its application to a certain surface under the given conditions of use was substantiated. Based on a simulation of the process of wetting a certain surface with a paint and varnish material, it was established that with the help of this method, it is possible to control the quality of the paint and determine the conditions of its use. Substantiated that it is advisable to control the speed of the process of wetting a specific surface with paint in an automated mode based on an optical method, which makes it possible to perform express control of paint and varnish material in a dynamic visual mode.
paint and varnish material, quality, characteristics of paints, surface wettability, complex express quality control, wettability of a solid surface, optical method.
FOUR-COORDINATE FLOORING LAYOUT OF PORTAL COMPOSITION
The article highlights the relevance and formulates the problem of creating small-sized workbenches with computer hardware, inspecting the data generators and the design of such workbenches, and proposing options for a table-top workbench with a portal layout. The example of the preparation of a folding part shows the procedure for breaking up the ceramic program. The efficiency of creation machines in the initial process and during production has been primed.
desktop milling bench, screw drive, coordinate movement drives, aggregate-modular principle, core program, modernization, module.
IOT DEVELOPMENT: IOS - APPLICATION FOR EQUIPMENT MANAGEMENT
The article considers the main protocols of interaction of mobile applications with technical equipment, developed a mobile application that provides interaction with technical equipment using modern data transmission protocols. The main protocols used in the program are Bluetooth, Wi-Fi, MQTT and Bonjour, which allow you to implement device management, data exchange and connection settings. An analysis of software communication methods with sensors, external devices and programmable systems to ensure stable communication was carried out.
mobile applications, hardware, interaction protocols, Bluetooth, Wi-Fi, NFC, MQTT, sensors, sensors, external devices, automation, Internet of Things (IoT), API, integration, data transfer, device management.
AUTOMATION OF SEGMENTATION OF MEDICAL IMAGES
The work is devoted to the software implementation of digital image processing methods, in particular, segmentation of medical images, using the advantages of the Python programming language. The work implements filtering and noise reduction algorithms, such as the fuzzy adaptive median filter, as well as segmentation using clustering methods and algorithms, such as the Otsu method and the Gabor filter for texture detection. Modifications of fuzzy C-means algorithms to improve medical data segmentation are also considered. The development of medical image segmentation scripts will automate the process of data processing and analysis in the medical field. This will help improve diagnostic accuracy, provide faster access to medical image processing results, and open up new opportunities for research and treatment planning.
automation, digital image processing, Python, fuzzy adaptive median filter, clustering, noise suppression, texture analysis.
DEVELOPMENT OF SIMULATION STATISTICAL MODEL OF MILITARY EQUIPMENT MAINTENANCE PROCESSES
Complex technical objects of military equipment in society are of exceptional importance. These include, first of all, various radio-electronic complexes of military and special purpose, radar stations, automated control systems (of air traffic, energy facilities, etc.). The state's defense capability, economic security, and the lives of hundreds and thousands of people depend on the level of reliability of such objects. Such objects belong to the class of objects that are subject to long-term repeated use. They are usually expensive and require significant costs for their operation. To ensure the required level of reliability during their operation, maintenance (MTO) is usually performed, the essence of which is the timely preventive replacement of elements that are in a state before failure. In this work, a simulation static model has been developed, designed to predict the reliability indicators and operating costs of a complex technical object of military equipment, which depend on the parameters of the selected MTO strategy. MTO has implemented algorithms for simulating MTO processes for three variants of MTO strategies.The regulated MTO modeling mode was introduced to ensure the completeness of the analysis of possible MTO strategies for the designed object and to predict the possible gain in reliability and operating costs of the object due to the use of “condition-based” maintenance strategies.
complex technical objects of military equipment, simulation static model, maintenance, modeling mode
SELECTION OF QUALITY INDICATORS FOR THE PREPARATION OF THE STARCH-CONTAINING BATCH FOR AUTOMATIC PROCESS CONTROL
The article analyzes the mechanical-enzymatic processing (MEP) in alcohol production. Determination of the quality indicator of starch-containing batch preparation - viscosity, which is little studied to date. Usually, the main indicators of the batch are the concentration of dry matter in the batch and the degree of starch formation in the batch, which are not controlled but determined approximately by the duration of heat treatment at a given temperature. This leads to difficulties that arise when the technological indicators required by the regulations are not obtained at the previous stage of production. The situation can be improved if the degree of starchiness of the batch is determined before it is fed to the next processing stage, which will not only improve the quality of control but also affect the quantitative indicators of the final product, allow for better and faster adjustment of the automatic control system, and save energy.
viscosity, automatic control system, MFI, batch preparation, pasteurization.
STUDY OF THE CAPACITIVE SENSOR OF THE AIR GAP IN THE HYDROGENERATOR WITH PARALLEL COPLANAR ELECTRODES
The paper describes the design, circuit and technological features of a capacitive sensor of the air gap (AG) between the bore of the stator core and the rotor poles in a capsule hydrogenerator, formed by a system of strip parallel coplanar electrodes. The system contains high-potential, low-potential and grounded electrodes. The change in electrical capacitance between the system of high-potential electrodes and low-potential electrode systems functionally depends on the change in the distance between the common plane of the sensor electrodes at the rotor poles, which is the value of the air gap. A method for experimentally determining the sensor conversion function is outlined. The equipment and measuring instruments used described. The research methodology for simulating changes in AG involves the use of a special device for parallel plane movement of a flat-grounded plate, which imitates the surface of a rotor pole in a machine. The plate moves along the device carriage relative to the common surface of the sensor electrodes, which fixed on the device. A micrometer head carries out the task of movement and its registration. Tabular and graphical data illustrating the experimentally determined transformation function obtained. A comparison of the experimental results with the theoretical ones confirmed the correctness of the proposed principles for constructing the sensor. The use of a sensor makes it possible to increase the accuracy of measuring AG in hydrogenerator, which will ultimately improve the assessment of the current technical condition of the machine.
hydrogenerator, air gap between the stator and rotor, capacitive sensor, experimental sample.