Computer systems and network
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Published By Lviv Polytechnic National University

2707-2371, 2707-2371

2021 ◽  
Vol 3 (1) ◽  
pp. 58-67
Author(s):  
R Kononenko ◽  
◽  
A Salo

With the development of technology and computerization, humanity is entering a new stage of modernization of society every year. This happens in all spheres of life. From medicine and the creation of new medical computer devices to everyday activities, such as paying for groceries. Contactless payments are largely how they sound - a way to pay for goods or services, without other physical needs to go through your automation or transfer it to the person. If you've even seen a passerby press his phone at the checkout to pay late, you've witnessed this technology. Describes the creation of a cashless payment module. Software and hardware has been created that can function autonomously and uninterruptedly. The module has a compact size, placed in places for easy payment. The module is of medium price shade in order to successfully enter the product market.


2021 ◽  
Vol 3 (1) ◽  
pp. 29-37
Author(s):  
Y Horbachov ◽  
◽  
I Pasternak

In this project was shown software system for drug search in online mode, which was included: three services, user interface. Also, was analyzed test of this system, speed for system and efficiency of system. A software system – this is a group of integrated software tools which support certain process and share a database. This system shows how three services work: the primary service, the additional service and provider’s service. Also given are the modes of their work, their capabilities and specifically what they include and represent. The description of all technologies are given which used during development of this system, including their advantages and disadvantages in general. On the basic of this technique, the client-server system of drug search is realized. Moreover there are various options for searching for medical items, a searching by using search and by using location of the pharmacy on Google map were suggested. A description of the development environment and main of its functions were provided. In addition, what is REST API, where it was used and why exactly REST was used during development of this system. It also shows how to run the program, namely the procedure, with description, explains exactly how to run the program, and what additional plugins need to be installed. This article describes the algorithm of software system for drug search in online mode, the main functions of the system are given and described. Screenshots of the main modules of the server side and of the program are added as well as screenshots of databases.


2021 ◽  
Vol 3 (1) ◽  
pp. 1-6
Author(s):  
E Vavruk ◽  
◽  
B Popovych ◽  
R Popovych

Розроблена програма для моделювання завадостійких кодів Ріда-Соломона на основі об’єктно-орієнтованої технології. Вхідними даними для системи є блоки байтів для передачі через канал зв’язку, де в цих блоках можуть статися помилки. Створена програма реалізує коди типу (255,239) та (255,223) для скінченого поля з 256 елементів GF(28) зі стандартними породжуючими багаточленами x8+x4+x3+x2+1 та x8+x7+x2+x+1. Крім того, передбачена можливість у випадку необхідності додати інші типи кодів та багаточлени, які породжують скінченне поле.


2021 ◽  
Vol 3 (1) ◽  
pp. 68-79
Author(s):  
A Kupinskyi ◽  
◽  
I Yurchak

In this project was shown approaches to the implementation of a weather station for monitoring the microclimate in the room on Arduino platform. Considered a platform for project development and software environment. The virtual scheme of the weather station is modeled. The main functions of the components are described and their connection to the microcontroller is shown. The process of firmware of the microcontroller is considered. The algorithm of system operation is described. A functional electrical diagram were also constructed. Described the weather station settings and instructions for use are provided. The device was also tested. Comparisons with analogues are given.


2021 ◽  
Vol 3 (1) ◽  
pp. 99-105
Author(s):  
V Puyda ◽  

With the development of microprocessor components and, accordingly, a significant expansion of the use of computer technologies, remote measurement techniques are being developed. These include telemetry and remote control of technical systems or their components in industry, research, home appliances and other fields. In this paper, the author suggests how to build a local web-server based on a microcontroller with an ARM Cortex-M4 core, which can be interacted with via an http-browser with Internet access. The block diagram of the local web-server on the basis of the STM32F407 microcontroller with the ARM Cortex-M4 core is suggested. Hardware modeling of the local web-server with a two-processor architecture including the main controller and the Modbus processor with the RS-485 interface, which provides information exchange via the Modbus RTU protocol, is done. The main controller is equipped with an indicator system based on functionally programmable LED indicators, an LCD indicator of type BC1602A, a local keyboard, USB and SWD ports for debugging and programming of the microcontroller, an external Ethernet module providing a temperature sensor and the Modbus RTU relay module, which interacts with the main controller of the local web-server via the Modbus processor with the RS-485 interface using the Modbus RTU protocol. A software for interaction of the local web-server and a http-browser has been developed. The local web-server was tested with different types of http browsers, proved to be reliable and showed the response time which depends on the number of sensors and is less than 1 second in case of 9 sensors.


2021 ◽  
Vol 3 (1) ◽  
pp. 80-88
Author(s):  
D Kushnir ◽  

As a result of the analytical review, it was established that the family of Yolo models is a promising area of search and recognition of objects. However, existing implementations do not support the ability to run the model on the iOS platform. To achieve these goals, a comprehensive scalable conversion system has been developed to improve the recognition accuracy of arbitrary models based on the Docker system. The method of improvement is to add a layer with the Mish activation function to the original model. The method of conversion is to quickly convert any Yolo model to CoreML format. As part of the study of these techniques, a model of the neural network Yolov4_TCAR was created. Additionally, a method of accelerating the load on the CPU using an additional layer of neural network with the function of activating Mish in Swift for the iOS mobile platform was added. As a result, the effectiveness of the Mish activation function, the CPU load of the mobile device, the amount of RAM used, and the frame rate when using the improved original Yolov4-TCAR model were studied. The results of the research confirmed the functioning of the algorithm for conversion and accuracy increase of the neural network model in real-time.


2021 ◽  
Vol 3 (1) ◽  
pp. 106-113
Author(s):  
V Chyhin ◽  

The possibility of creating a computer control system for an unmanned aerial vehicle using remote cloud computing according to predefined scenarios from the user's desktop is investigated. For this, an experimental setup was created, which includes a quadcopter, a personal computer with the Windows operating system, an on-board computer Raspberry-3 with the Linux operating system, a Pi Camera V2 camcorder, and a Pixhawk autopilot. To model the control and transmission of video images the own control programs and photo pursuit on a computer Raspberry-3 in Python are recorded. Based on the obtained results, a model of unmanned aerial vehicle control from the desktop of the user's personal computer via the on-board computer without the use of a standard control panel and operator is proposed.


2021 ◽  
Vol 3 (1) ◽  
pp. 38-46
Author(s):  
A Hrytsyk ◽  
◽  
Y Klushyn

In today's reality, the pace of people's lives is much higher than it was 30 years ago and it is still growing. At the same time, the amount of information also growing. This information should to be processed constantly, daily, as soon it is received. Production volumes are also not standing still. Such a lively pace of life requires process consistency and continuity. And these processes must be provided by man. This article describes the system of watering which should automate the process of growing plants. Also the analysis of a new branch, cyber-physical systems is carried out. The analysis of modern systems of autonomous irrigation, principles of their construction and organization of their work are committed. A method of implementing a system that provides the possibility of constant monitoring of the growing environment and provides an opportunity to influence it is suggested. The choice of components for system construction is made. The algorithm of the program operation is described. An analysis of the relationship between system components and the user's relationship with the system is performed.


2021 ◽  
Vol 3 (1) ◽  
pp. 89-98
Author(s):  
Y Paramud ◽  
A Yanchynskyi

An alert system has been studied, in which sensor data can be collected and analyzed for further processing and action. Notifications are generated when data is compared against certain criteria. The ESP8266 microcontroller has been chosen as the basic device for implementing such a system, as this Espressif controller is a highly integrated Wi-Fi SoC solution that meets the demands of the cyberphysical systems industry in low power consumption, compactness and reliability. This solution is one of the most effective for the alert system. On the basis of this microcontroller the technical means of the computer system and the functional software for realization of functions of monitoring and the notification of critical values of a microclimate indoors are designed. The architecture of the computer system is studied. The choice of the main components of the hardware part of the system is substantiated, the element base is considered. A detailed scheme of the software operation algorithm is offered, as well as the results of the developed computer system for alerting the critical values of the indoor microclimate are demonstrated.


2021 ◽  
Vol 3 (1) ◽  
pp. 7-19
Author(s):  
N Vozna ◽  
◽  
A Davletova ◽  
Ya Nykolaychuk ◽  
V Gryga

The article proposes methods for improving the structures of multi-bit multipliers, which are characterized by increased speed, reduced structural complexity of the device and reduced structural complexity of inputs and outputs depending on the bit multipliers (512-2048 bits), respectively (1024- 4096) times, compared with known multipliers based on classic single-digit full adders. Optimization of structures of multi-bit multipliers is offered. Comparative estimates of structural, functional and relative functional and structural complexities of their circuit implementations are given. The use of optimized circuit solutions of multipliers allows to significantly improve the system characteristics of complex computing devices with a large number of such components in the crystals of microelectronic technologies.


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