Development of Remote Control System for Vegetables Drying Process in Belt Dryer with Application of Cloud Technologies
Students Name: Slivko Valentyn Mykolaiovych
Qualification Level: master (ESP)
Speciality: Automation and Computer-Integrated Technologies
Institute: Institute of Power Engineering and Control Systems
Mode of Study: full
Academic Year: 2022-2023 н.р.
Language of Defence: англійська
Abstract: Slivko V.M., Khymko O.M. (supervisor). Development of a system for remote control of the process of drying vegetables in a belt dryer using cloud technologies. Master’s thesis - Lviv Polytechnic National University, Lviv, 2023. Extended annotation. Automation of technological processes is an integral factor in increasing productivity and improving working conditions, improving economic performance. Nowadays, automation is the main part of any production. Also, the master’s thesis considers various aspects of using cloud technologies in automation tasks. Cloud technologies provide enhanced automation capabilities due to their flexibility and scalability when implemented in any technological process. This paper analyzes various aspects of using cloud technologies in automation tasks. First, it examines the benefits provided by cloud services such as infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). These services allow enterprises to quickly implement automation solutions without significant hardware and development costs. Amazon Web Services (AWS) was chosen as the main provider of cloud technologies and services. On the basis of AWS cloud technologies, a scalable data processing and system management system was considered and developed using a WEB human-machine interface that was deployed on a server based on AWS EC2, event processing in the control system based on AWS Lambda, and notifications for the operator responsible for the control object were implemented by sending an email notification using the AWS Simple Email Service. The object of research for the master’s thesis is the cloud-based control of the drying process in a belt dryer. The subject of the research is the improvement and implementation of modern data processing technologies and combination with existing technologies to control the automation system. The aim of the research is to develop elastic, stress-resistant and highly secure automation systems based on cloud technologies. The first chapter of the master’s thesis describes the technological process, provides the theoretical basis of the technological process in individual technological devices and machines, considers the material and heat balances of drying, and recommends maintaining the air temperature after the air heaters under the belt at 65...80 °C, except for the lower belt, where the air temperature after the air heater is set at 50...55 °C. The humidity of the air leaving the dryer should be 55 ... 60%, but not higher than 70%. [2] The second section analyzes the technological process, determines the factors influencing the technological process, provides a flow chart, and draws up a structural diagram of the relationship between the technological parameters of the object. The third section is devoted to the development and feasibility study of the functional process automation scheme, a description of the functional automation scheme, a technical justification for the choice of the functional automation scheme, and a listing and description of all 8 control loops present. The fourth section substantiates the choice of automation hardware and human-machine interface software products, selects and describes the characteristics of primary measuring transducers and actuators, microprocessor-based automation tools, human-machine interface software (SCADA/HMI), software tools for data collection, processing and visualization based on cloud technologies, describes cloud technologies and their types in detail, reviews the cloud technology market, selects and configures cloud software tools based on AWS, a sample notification for the operator was created duringalarm state caused by excessive temperature in the system. The fifth chapter reveals the development of software for a computer-integrated process control system, namely - algorithms for the functioning of control loops - program for the operation of the microprocessor-based automation software of the Simatic S7-1200 series - program for the operation of the human-machine interface (SCADA/HMI) - review and development of data processing algorithms in the cloud - overview of the drying process control using cloud technologies - development of Web-HMI interface Chapter Six presents the schematic diagrams of electrical connections of the computer-integrated control system for measuring transducers and actuators, microprocessor-based automation tools. In Chapter 7, we modeled the humidity ATS used to maintain the moisture content of potatoes at the dryer outlet at the level of 10 %. A comparison was made between process modeling using the FFT method and optimization methods based on the Response Optimization block in the Simulink software package.