Svetoslav Atanasov

Trakia University · Faculty of Engineering and Technologies

The main purpose of this article is to cover maximum numbers of wireless technologies and standards used in the wireless sensor networks (WSN), to specify their areas of use, to study and summarize their parameters and to make comparison between them and other wireless communication technologies wide used in agriculture and field monitoring, in ind...

In this article is presented a model of the relationship between the soil moisture and its temperature and the color of the leaves of greenhouse tomato plants. This dependency is modelled using nonlinear regression statistical Quasi-Newton method. Piecewise linear regression with breakpoint models are received. The impacts of the factors non-includ...

This research article's aim is by using data mining and finding a suitable machine learning algorithm (MLA) to predict soil moisture, therefore the need for watering. Prediction is based on a training data set (including color RGB values taken from the leaves and values for soil moisture and soil temperature). A classifier is trained first, on its...

Fresh water supplies for irrigation purposes must be used sparingly and judiciously, as water is an invaluable natural resource that is in short supply in much of the Earth. Soil moisture in fields is not uniform everywhere, and deploying thousands of sensors is unnecessarily expensive. The purpose of this publication is to model and predict the re...

The Immersive Virtual Reality (VR) has the potential to significantly enhance the non-renewable energy (NRE) industry by improving safety and efficiency in operational and training processes. In order to explore applications of immersive technologies aimed at enhancing processes within the NRE energy sectors, a systematic review of the literature p...

Plants can serve as biological sensors if their “readings” and the feedback they provide us through changes in the colour of their leaves can be correctly interpreted. The study aims to predict soil moisture and, as such, the need for irrigation, using nonlinear mathematical models, describing the relationship between RGB and HSL colour model compo...

This paper outlines a systematic four-step methodology for upgrading Moodle from version 3.6.5 to 3.9.9. However, the same procedure can be applied in the next versions of Moodle. The process begins with comprehensive backup and preparation, followed by the replacement of the Moodle codebase and execution of the upgrade script. Post-upgrade checks...

The accurate and prompt data regarding the water levels of crops and soil moisture are crucially important in the context of contemporary precision agriculture and intelligent farming practices. According to projections from the Food and Agriculture Organization (FAO), the global population is anticipated to reach nearly 10 billion people by 2050....

The research relevance is predetermined by the need to introduce effective methods and tools for monitoring water resources and tracking soil nutrient levels to improve agricultural production and sustainable use of natural resources. The research aims to provide a comprehensive overview of the latest technologies and techniques used in RS for accu...

Distance learning laboratories must become frequent teaching methods, especially in higher education systems. This article presents ways to remote access and work in real time to laboratory stands and teach students distantly of basics of PLC programming, using instruction list, functional block diagram, ladder diagram, structured text, and sequent...

In the form of a sequence of actions, in a laboratory set of experiments, a methodology for measuring the absorption time of the irrigation water from greenhouse tomato plants is proposed. Based on pure scientific observation, before the actual measurements and during the experiment, a hypothesis is put forward, that in the experiment’s particular...

This article presents the process of designing a virtual laboratory for teaching C ++ programming. The technological requirements and those regarding the content and organization of the education are formulated based on preliminary research. The conceptual, functional and architectural models of the virtual laboratory are presented. The conceptual...

Survey of Irrigation Water Uptake Time at Indeterminate Tomato Plants Based on Colorimetric Measurements of the Leaves: In the form of a sequence of actions, a methodology for measuring the absorption time of the irrigation water from greenhouse tomato plants is proposed. Based on pure scientific observation, before the actual measurements and duri...

This article aim is to present an overview of existing concepts in the field of the measurement of soil moisture. To main terms in Bulgarian are given their English corresponds, lack and inconsistency of which came as a setback in their research and in the creation of the review. It was created for the needs of thesis research, partly associated wi...

This article is related to scientific dissertation research including also soil moisture measuring in tomatoes greenhouse in the region of Plovdiv. A short overview of current technologies for measuring soil moisture in situ is made. In the experimental section wireless soil moisture sensor is used. А known method for manual calibration of the FDR...

This paper presents an approach to integrate wireless sensor networks (WSN) with the LabVIEW graphical development environment through a dedicated software driver. As personal contribution, a system architecture and concept implementation are described, in the context of greenhouse/livestock monitoring. Data acquisition is performed via the deploye...

Application of wireless sensors networks (WSN) and PLC control in precision agriculture are considered in the paper. Design & implementation of a wireless sensors networks (WSN) that can monitor the air temperature & light in greenhouse/livestock monitoring. The main purpose is to present on WSN as tool the collection data of sensor nodes that perf...

The main purpose of the article is to propose work procedure, method, a step by step algorithm for collecting, processing and analyzing information from wireless sensors remotely. Proposed procedure is applicable to multiple sensors. Extracted from the sensor information is stored on a server on the Internet, where from it can be retrieved, used fo...

The quality of education is a crucial aim. Technology impacts so many areas of modern life. There are streaming too many information from everywhere, plenty of information. Technology provides a bounty of tools for learning and in the same way of cheating on a exam. The ability to improve quality of education is the main goal to any institution, fo...

High quality of education is a main goal of any institution, formal or informal organization for education. The ability to improve quality of education by sharing audio, video, any combination of media, or lessons and in that way to expand the level of acquired knowledge is explored by many organizations and can be obtained using web-conferencing s...

The Scientific Review Article - Style, Structure and Synthesis: This article arises from the relative lack of literature in Bulgarian on the topic, and its main objectives are to identify the correct steps, good style and structure in the creation of scientific review articles. A classification of the types of scientific review articles is made, co...

This paper represent our approach in Faculty of Engineering and Technologies, of teaching students in basics of microprocessors, using virtual software tools, emulating processor’s actions.

Presented in this paper is the authors' research of the different applications of the newest information technologies in agriculture. Provided in this article is information concerning the use and application of GPS receivers and GIS software, which are valuable for the up-to-date agriculture. These technologies and their applications provide numer...

The methods used in the development of the virtual laboratory for modeling and simulation of automatic control systems are described in this article. The developed study course also covers the main topics of identification, modeling, simulation and optimization of different systems. A method (concept) for a simulation study of a real system for aut...

Impedance analysis tool for biological environments: This report presents the technical means to measure impedance parameters хC and RS biological environments. Analyze the characteristics of transformative contact capacitive cells used in impedance meters. Reasonable structure of the impedance measurement system for continuous automatic control of...

This report analyzes the opportunities for implementing cloud computing and services for building virtual laboratories. The report includes the following chapters: Introduction; Cloud computing and services; Building virtual lab with cloud services; Advantages and disadvantages of virtual laboratories using Cloud services; Conclusion. In "Cloud com...