In this bachelor's project, a contact-impedance hardness tester was designed for monitoring metallic products.
The first section describes examples of applications in the fields of contact-impedance testing and the relevance of their use. It provides a comparison and identifies the advantages and disadvantages of modern and currently relevant hardness testers based on the physical principle of measurement, i.e., contact-impedance (acoustic impedance). Various methods of contact-impedance hardness testing are also considered, and their analysis allowed for the selection of an ultrasonic contact-acoustic-impedance method for measuring hardness for the device being developed. The technical characteristics of existing devices with the potential for modernization (improvement) and cost reduction are examined.

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In the diploma project, the development of an eddy current flaw detector based on a GMR converter was carried out.
The distinctive features of the project are as follows. Firstly, the excitation of eddy currents in the control object (CO) is carried out by rectangular excitation coils, the active part of which is located tangentially to the CO surface. This makes it possible to ensure a homogeneous distribution of eddy current density over a large area of the CO surface. Secondly, the eddy current excitation system is formed by two orthogonal coils in space, which are fed by two sinusoidal currents with a phase shift of 90° between them. This makes it possible to ensure the invariance of the eddy current parameters from the CO defects to the spatial orientation of the defect. Thirdly, the use of GMR transducers as a sensor makes it possible to increase the sensitivity of the sensor to small defects due to their high sensitivity to the magnetic induction of the eddy current field.

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The thesis is dedicated to the design of a metal detector for detecting metallic objects in soils.
In Chapter 1, an analytical review of various types of metal detectors is conducted, analyzing several specific examples with an indication of their advantages and disadvantages. The conclusion of Chapter 1 contains summaries and analytical conclusions obtained during the review and analysis of existing metal detection methods.
Chapter 2 examines the stages of designing the metal detector. Initially, the task for this chapter is formulated. Functional and structural diagrams are created. Further design included the development of a low-pass filter, the calculation of the required coil, and the main electrical parameters of the system.

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In this bachelor's project, a parking sensor system based on ultrasonic sensors and controlled by an Arduino Uno microcontroller was developed to facilitate vehicle parking. The main feature of the system is the use of affordable components and the ability to display results on an LCD screen and provide audible signals.
The first section analyzes modern parking sensor systems, identifies their advantages and disadvantages, and justifies the choice of ultrasonic technology. The technical characteristics of existing systems are also considered, and the selection of Arduino Uno as the main controller is substantiated.
In the second section, the system parameters are calculated. The methods of calculating the coefficients and parameters necessary for the accurate operation of the ultrasonic sensors are described. Formulas and calculation examples are provided to confirm the correctness of the component and algorithm choices.

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The diploma project consists of a list of abbreviations, an introduction, three chapters, conclusions, a bibliography, and appendices.
The aim of the diploma project is to design a solar panel orientation control system. During the project, methods of obtaining maximum power from the solar panel were reviewed, an overview of the types and principles of operation of solar trackers was conducted, and examples of existing designs of solar panel orientation control systems were provided.
The description and principle of operation of the designed control system were given. The main components of the system were described, the parameters of the mechanical units were calculated, and the schematic diagram of the control system intended for the orientation of the solar panel was developed. Additionally, a possible method of controlling the system using a microcontroller with specialized software was presented.

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  1. Venchkovska A. Automated system of the facial skin condition analysis
  2. Prysykar O. Natural gas flow measurement complex
  3. Soroka M. Ultrasonic Thickness Gauge
  4. Tymets N. Device for automated temperature control

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АСНК КПІ ім. Ігоря Сікорського, 2021