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Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 63
Tolar, David , Štork, Milan
Monitoring of a skin temperature in vicinity of a surgical wound

This article describes experimental measurements of a skin temperature in vicinity of a surgical wound. Measurements were carried out in collaboration with the orthopedic department of the University Hospital Olomouc, Czech Republic. A system used for sensing, transmission and visualization of&#x...

Štork, Milan , Weissar, Petr , Kosturik, Kamil , Novák, Jaroslav , Zeman, Václav
Use of accelerometer for walk-run or shot analysis for sport and rehabilitation purposes

Human movement analysis is a research field with clinical and biometrics application. It has been shown useful in the objective measurement of gait, balance, falls risk assessment and mobility monitoring. Running and/or walking are also integral activities to most athletic disciplines. ...

Štork, Milan , Mayer, Daniel , Hrušák, Josef
Generalized tellegen principle used for energy method for systems modeling

This paper deals with dissipativity, stability, chaotic behavior and related structural properties of a relatively broad class of finite dimensional strictly causal systems. The class of nonlinear systems under consideration is described in the state-space representation form. System properties are&#x...

Mora Sierra, Yesid , Georgiev, Vjačeslav , Mora Sierra, Yesid
Readout interface for strip detectors with spectrometry applications

In the present paper a preliminary design and implementation of a readout interface for strip detectors, using Applied Specific Integrated Circuits (ASICs) is discussed. Key issues are the parameters and features of the main constituent parts of the system: strip detectors, ASICs and&#x...

Moldaschl, Jan , Broulím, Jan
An impact of the boost diode selection on the overall efficiency of Active Power Factor Correctors

The paper focuses on a selection process of boost diodes for Active Power Factor Correctors (APFC) based on the Boost converter. The choice of the suitable boost diode plays crucial role for an efficiency of APFC. The main aim of the paper is devoted to theoretical a...

Lufinka, Ondřej
Ultrasonic transceiver with the possibilities of the data communication and the two-point distance measurement

This paper deals with the problem of the short distance measurement between two (or more) moving points with the ability of a simple data communication. Different possibilities were explored and using the ultrasonic transceiver was then chosen for a future development. The article ...

Linhart, Richard , Veřtát, Ivo
The signal splitter for laboratory GNSS signal distribution

The paper presents a design of a four way signal splitter working in L frequency band, for standard GNSS (Global Navigation Satellite Systems) signals. These splitters are used when more than one receiver has to be connected to one signal source, like an antenna, a signal...

Jílek, Jiří , Štork, Milan
Determination of systolic, mean and diastolic blood pressures with Dual cuff system is based on physiology

Single cuff automatic blood pressure (BP) measurements are subject to errors because the BP values are based on statistical estimation rather than on physiological principles. We developed a dual cuff experimental system that uses an arm cuff and a wrist cuff. The wrist cuff f...

Hofmann, Gerhard , Georgiev, Vjačeslav
Using VHDL-AMS to simulate aging behavior of electronic components

Reliability of electronics is in the automotive industry very important. The average age of cars in Germany was 9 years at 2015.i Normally the life time is evaluated by the environmental test according ISO 16750. The content of this paper is to contribute that computer si...

Černý, Jan , Masopust, Jiří
Long Term Evolution networks planning

This work deals with 4 th Generation Long Term Evolution (LTE) standard for mobile telecommunication. LTE comes with new approaches how to increase speed and stability of wireless data transmission. Planning these networks involves many complex tasks, therefore advanced software tools are&#x...

Broulím, Jan , Moldaschl, Jan , Georgiev, Vjačeslav
A programmable voltage source with high speed current feedback protection

In this paper we propose a design of a programmable voltage source with high speed current feedback for disconnecting the electronics when the over current occurs. Short circuits may occur in electronics used in ionizing radiation environment because of Single Event Effects (SEEs) ...

Žahour, Jiří , Křivka, Jindřich , Kosturik, Kamil
Engine type independent SCR system

In this paper is described a part of the system for the reduction of nitrogen oxides (NOx) in the exhaust system. The system is designed for diesel engines and the control electronics must be independent of the engine type. The principle of mass flow measurement of e...

Votava, Martin , Glasberger, Tomáš
A carrier redistribution PWM for dual inverter with separated DC circuits

This paper deals with a proposal of a carrier redistribution PWM and its comparison with a phase disposition PWM (PDPWM) and carrier redistribution PWM for a multilevel converter dedicated to high power medium voltage electric drives. The converter topology is based on a cascaded&#...

Valda, Lukáš , Kosturik, Kamil
Comparison of Li-ion active cell balancing methods replacing passive cell balancer

This article describes possible proposals of the active battery cell balancer for Li-ion battery-pack which should be used as a replacement of the common passive cell balancer in the existing battery management system. The main goal of this paper is to compare the most efficie...

Tolar, David , Štork, Milan
Acknowledged data transmissions in wireless sensor network with optimized sensor energy consumption

This paper describes communication method for use in a wireless sensor network, which focus on a bidirectional communication with prevention of data loss and minimization of a power consumption of the wireless sensor. The method described was successfully tested and verified on an ...

Talla, Jakub , Peroutka, Zdeněk , Blahník, Vojtěch , Streit, Luboš
Rotor and stator resistance estimation of induction motor based on augmented EKF

This paper deals with rotor and stator resistance estimation of induction motor (IM) drive based on augmented Extended Kalman Filter (EKF). The proper knowledge of rotor flux magnitude and flux position is a necessary condition for high performance induction motor control (Rotor Flux&#x...

Štork, Milan , Vančura, Vlastimil
Pacemaker leads place optimization based on vectorcardiography signal processing

A pacemaker is a small electronic device implanted under the skin near the collarbone. Pacemakers monitor the heart's electrical activity. If the heart is beating too slowly or pausing too long between beats, the pacemaker will provide electrical impulses that stimulate the heart&#x...

Štork, Milan , Skála, Jiří , Weissar, Petr , Holota, Radek , Kubík, Zdeněk
Various approaches to driver fatigue detection: A review

Drowsy driving is considered one of the most serious causes of fatal traffic accidents, especially for long distance drivers who struggle significantly during monotonous driving conditions. As a result, various types of warning systems have been proposed among other preventive measure agains...

Štork, Milan , Kurt, Erol
Control system approach to the dynamics of nonidentical Josephson junction systems

The dynamics of a resistively coupled nonidentical Josephson junction (JJ) circuit is explored and a new control strategy is applied in order to smoothen the unstable regimes. In such a system, periodic, quasiperiodic and chaotic behaviors have been encountered worldwidely. In addition, ...

Štork, Milan , Hrušák, Josef , Mayer, Daniel
A new chaotic system based on state space energy feedback

Multi-wing chaotic attractors are highly complex nonlinear dynamical systems. A new four-scroll chaotic attractor was found by energy feedback controlling method in this paper. Spectral analysis shows that the system in the four-wing chaotic mode has very broad frequency bandwidth, verifying ...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 63