Janos Kovacs

7202249258

Publications - 11

Development of bluetooth mesh core stack using omnet++

Laszlo Kajdocsi Andras Dorombozi Janos Kovacs

Publication Name: Sisy 2019 IEEE 17th International Symposium on Intelligent Systems and Informatics Proceedings

Publication Date: 2019-09-01

Volume: Unknown

Issue: Unknown

Page Range: 23-28

Description:

The evolution of networking technologies is crucial in the 21st century. The greatest challenge for the Industry 4.0 is the spread and generalization of cyber physical production systems which cannot evolve without new networking technologies. One of these research areas is the wireless mesh networking which may offer an accurate, fast, adaptive, self-organizing, self-healing and inexpensive solution in communication. Wireless mesh networking involves some radio technologies, like Wi-Fi, ZigBee, Bluetooth, IQRF, etc. The most widespread and cost effective solution of the above mentioned ones is Bluetooth. Luckily, Bluetooth SIG adopted the first mesh core stack into Bluetooth 5 protocol in 2017, although a newer Bluetooth 5.1 came out since then. In this paper, the development of Bluetooth mesh core stack will be presented using OmNET++ simulation tool.

Open Access: Yes

DOI: 10.1109/SISY47553.2019.9111635

Issue on implementation Possibility of Bluetooth Mesh Capabilities into OmNET++

Laszlo Kajdocsi Janos Kovacs

Publication Name: Sisy 2018 IEEE 16th International Symposium on Intelligent Systems and Informatics Proceedings

Publication Date: 2018-11-05

Volume: Unknown

Issue: Unknown

Page Range: 203-207

Description:

Navigation was always important to humankind. Today, it is unimaginable to navigate in the world without the Global Positioning System. Although, the Global Positioning System operates very accurately outdoors but does not in indoor environments. Unfortunately, the indoor navigation is still in its infancy. However, several approaches have been proposed during the last decade but none of them is accurate and/or inexpensive enough for the consumer use. According to the authors' proposal, utilization of a hybrid mesh network might solve the inaccuracy. The mesh technology would offer an accurate, fast, adaptive, self-organizing, self-healing and inexpensive solution for the indoor positioning. A hybrid mesh network would involve some technologies like Wi-Fi, Bluetooth, RFID or IQRF. Fortunately, the Bluetooth Special Interest Group announced the mesh capability in the Bluetooth 5 standard in 2017. However, building up a physical network is always expensive experiment, thus simulations would be executed in a OmNET++. In this paper, the implementation possibility of the Bluetooth mesh capabilities will be analyzed.

Open Access: Yes

DOI: 10.1109/SISY.2018.8524830

A great potential for using mesh networks in indoor navigation

R. C. Pozna Laszlo Kajdocsi Janos Kovacs

Publication Name: Sisy 2016 IEEE 14th International Symposium on Intelligent Systems and Informatics Proceedings

Publication Date: 2016-10-19

Volume: Unknown

Issue: Unknown

Page Range: 187-192

Description:

Navigation has always been important to people. Thus, it is hard to succeed in navigation without Global Positioning System. Although, Global Positioning System can be efficiently used in outdoor environments the indoor navigation is still in its infancy. Nevertheless, the indoor navigation is one of many open challenges in the 21st century that affects to the major technological advances. However, several indoor positioning solutions have been built over the last decade, but they are still neither accurate enough nor inexpensive for consumer use. Therefore, this paper proposes a novel suggestion that should have a great potential for applying mesh technology in the indoor navigation systems in order to improve the accuracy and the computational capabilities of devices.

Open Access: Yes

DOI: 10.1109/SISY.2016.7601495

An abstraction of the Lidar measurements

R. C. Pozna Ernö Horváth Janos Kovacs

Publication Name: Saci 2015 10th Jubilee IEEE International Symposium on Applied Computational Intelligence and Informatics Proceedings

Publication Date: 2015-08-17

Volume: Unknown

Issue: Unknown

Page Range: 381-385

Description:

The laser scanner seems to be one of the favorite sensors used in mobile robots (autonomous car) localization. The Lidar is similar to the radar except radio signals are substituted with laser beams. Measurements are a collection of n lengths obtained for different firing angles. The paper presents an abstraction of this collection. The abstraction reduce the dimensions of data from n to 3 and can be used in obstacles avoiding or in localization. The paper presents the abstraction definition and a simulation scenario where the abstraction is used.

Open Access: Yes

DOI: 10.1109/SACI.2015.7208234

Developing rapid prototype-capable applications for industrial mobile robot platforms

R. C. Pozna Ernö Horváth Janos Kovacs

Publication Name: Ines 2014 IEEE 18th International Conference on Intelligent Engineering Systems Proceedings

Publication Date: 2014-09-24

Volume: Unknown

Issue: Unknown

Page Range: 203-207

Description:

The paper summarizes our ideas and solutions in the subject of developing a rapid prototype-capable robot platform. Constructing a robotic platform for scientific researches means to find a robust electrical and mechanical system which is connected to a high computational device and it is easily programmable. Usually the first two features can be funded in industrial robots which unfortunately do not possess the last two. The presented solution refers to a mobile robot (Neobotix MP500) tuned with an extra computer and programmed with LabVIEW.

Open Access: Yes

DOI: 10.1109/INES.2014.6909369

The Personal Assistant application, problem definition

R. C. Pozna P. Földesi Janos Kovacs

Publication Name: 4th IEEE International Conference on Cognitive Infocommunications Coginfocom 2013 Proceedings

Publication Date: 2013-01-01

Volume: Unknown

Issue: Unknown

Page Range: 851-856

Description:

The subject of the paper is a personal assistant design. The goal of personal assistant is a daily activities list planning. The personal assistant will assist the costumer (human operator) for planning an optimum succession of desired activities. The solution is based on objective and subjective information. The paper focus on problem definition, mathematical structure of the concepts which are involved and a first solution analyze. © 2013 IEEE.

Open Access: Yes

DOI: 10.1109/CogInfoCom.2013.6719215

Implementation of event driven software gates for combinational logic networks

József Kopják Janos Kovacs

Publication Name: 2012 IEEE 10th Jubilee International Symposium on Intelligent Systems and Informatics Sisy 2012

Publication Date: 2012-12-12

Volume: Unknown

Issue: Unknown

Page Range: 299-304

Description:

The paper presents one implementation possibility of event driven software model of distributed or classical combination logic networks. The paper first reviews the basics of event-driven systems. Greater part of article presents the mathematical basics and architecture of event-driven combinational logic and example software implementation of the model. The paper shows the software implementation of AND and OR gate. After the introduction of basic gates of combinational logic the paper introduces the concept of the universal event-driven gate. The paper ends with software implementation of symmetrical event-driven XOR gate to create odd and even functions. © 2012 IEEE.

Open Access: Yes

DOI: 10.1109/SISY.2012.6339533

Event driven software modeling of combinational logic network based control programs

József Kopják Janos Kovacs

Publication Name: Ines 2012 IEEE 16th International Conference on Intelligent Engineering Systems Proceedings

Publication Date: 2012-10-01

Volume: Unknown

Issue: Unknown

Page Range: 253-257

Description:

Event driven program model is very good tool to write discrete control programs based on sequential logic, but to create combinational logic based controls is more problematic. The paper presents one implementation of event driven software model of combination logic networks. The paper first reviews the basics of event-driven systems. Greater part of article presents the mathematical basic and architecture of event-driven combinational logic and one software implementation of the model. The paper ends with description of event-driven universal software gate. © 2012 IEEE.

Open Access: Yes

DOI: 10.1109/INES.2012.6249840

Timed cooperative multitask for tiny real-time embedded systems

József Kopják Janos Kovacs

Publication Name: IEEE 10th Jubilee International Symposium on Applied Machine Intelligence and Informatics Sami 2012 Proceedings

Publication Date: 2012-06-29

Volume: Unknown

Issue: Unknown

Page Range: 377-382

Description:

The paper present alternative multitasking kernel algorithm used in tiny real-time embedded systems, microcontrollers. The paper first reviews the basics of realtime systems and traditional programming models used in embedded systems, like sequential programming model and traditional cooperative multitasking model. Greater part of article presents an alternative multitasking programming model, the timed cooperative multitasking. The authors take the reader through the process of kernel design based on timed cooperative multitasking model. The paper ends with demonstration of event-driven model used in timed cooperative multitasking model. © 2012 IEEE.

Open Access: Yes

DOI: 10.1109/SAMI.2012.6208993

Trade-offs in production supply systems

Csaba Tápler Janos Kovacs

Publication Name: International Conference on Industrial Logistics Icil 2012 Conference Proceedings

Publication Date: 2012-01-01

Volume: Unknown

Issue: Unknown

Page Range: 356-361

Description:

The cost price of a final product depends on - among others - the cost of value added processes such as production supply. When planning the supply strategy and defining the parameters of the processes we face a lot of trade-off situations (e.g.: decision between kanban or other supply strategy, kanban quantity, production line loading cycle time, maximal number of picking items on picking lists, etc.). The aim of this paper is to list these decision situations and give adequate solutions on them. By means of mathematical modeling we define the optimal system parameter configuration of a production supply system where the total cost is minimal.

Open Access: Yes

DOI: DOI not available

Cooperation in multiagent systems

R. C. Pozna P. Földesi Radu Emil Precup Janos Kovacs

Publication Name: Sisy 2011 9th International Symposium on Intelligent Systems and Informatics Proceedings

Publication Date: 2011-10-26

Volume: Unknown

Issue: Unknown

Page Range: 195-200

Description:

This paper gives aspects related to a cooperation scenario in the framework of multiagent systems. The presentation is focused on a multiagent system that consists of two agents, the Master and the Apprentice. The theoretical basis of the cooperation scenario is the definition of the most probable process, and two algorithms are used with this regard. The formulation of the cooperation scenario is exemplified for a case study that builds an architecture of successively placed bricks in the workspace. © 2011 IEEE.

Open Access: Yes

DOI: 10.1109/SISY.2011.6034321