Ondrej Karpis

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  • Ondrej Karpis
  • 2012 Federated Conference on Computer Science and…
  • 2012
This paper focuses on problems of gathering parameters of a traffic flow using simple sensors. The first part of the paper describes properties of a sensor node based on a magnetometer. The influence of various parameters (vehicle velocity, sensor location and orientation) on sensor output has been evaluated. We found that the sensor is sufficiently(More)
The paper is devoted to the description of acoustic communication system, which is designed for communication between robots YROBOT. The communication system is an extension of the mobile device YROBOT and facilitates the development and verification of simple modulation schemes used in RF communication. The paper describes the motivation of the development(More)
This article discusses the processing of signals using fast Fourier transformation in lowpower microcontrollers based on the ARM core. Simple microcontrollers do not support floating point numbers so fixed point data types must be used. Two ways of calculating FFT are analyzed: CMSIS library and special algorithm optimized for use on ARM processors(More)
A mobile and modular educational robotic platform called “Yrobot” is presented for the purpose of increasing students interest in studying technical subjects, to support teaching and to promote the selected areas of the information and communication technologies. The developed mobile robotic system is open hardware. Its base part - a mobile(More)
The paper is focused on the use of methods of compressed sensing (CS) in energy efficient monitoring of signals. CS allows to minimize the number of data that need to be transmitted to the sink node in the WSN environment. As a case study, we use compressed sensing for monitoring of mains voltage deformation. In this case we can assume that the measured(More)