No (2512)
Number of found documents:
2512
Belt Filling Line
Majchrák, František
Slovak
The goal was to create a mechatronic product, including sensory part, drives and control. The product is used to fill chosen drink flavors into the cup and transport it along the filling line. Management is realized through the Siemens PLC S-7 200.
Keywords:
conveyor; PLC; sensor; mixing drink
Available in a digital repository NRGL
Belt Filling Line
The goal was to create a mechatronic product, including sensory part, drives and control. The product is used to fill chosen drink flavors into the cup and transport it along the filling line. ...
Propulsion System for Electric Scooter
Doležal, Lukáš
Czech
The paper is focused on a design of optimal propulsion system for folding portable scooter. The BLDC motor is used as a propulsion. The paper deals with the design of electronics for sensor control. Two control methods are compared: six-step commutation and vector control. Attention is given to efficiency of both methods and consecutive selection of the best of the two.
Keywords:
BLDC; PMSM; Vector Control; six-step; MC56f82748; Electric Scooter
Available in a digital repository NRGL
Propulsion System for Electric Scooter
The paper is focused on a design of optimal propulsion system for folding portable scooter. The BLDC motor is used as a propulsion. The paper deals with the design of electronics for sensor control. ...
LED Pipetting Indicator
Demjan, Michal
Slovak
The main purpose of this work is making work for people in laboratories easier and more comfortable with limited budget. Project solved this problem and showed the affordable way how to improve laboratory environment and performances of laboratory workers. Designed and produced pipetting indicator, described on this work, is based on 8bit microcontroller. Indicator has ability to indicate up to 96 positions.
Keywords:
pipetting; indication
Available in a digital repository NRGL
LED Pipetting Indicator
The main purpose of this work is making work for people in laboratories easier and more comfortable with limited budget. Project solved this problem and showed the affordable way how to improve ...
An External User Interface With USB
Sládeček, Michal
Czech
This article deals with problems of developing user interface which can communicate with host system via USB. The article includes comparation of existing alternatives and description of USB class used for communication between external system. The main part of work is choosing hardware parts for device and definition of software structure. The aim is to design a schema and build a hardware prototype.
Keywords:
User interface; USB; hardware; display; joystick; Python
Available in a digital repository NRGL
An External User Interface With USB
This article deals with problems of developing user interface which can communicate with host system via USB. The article includes comparation of existing alternatives and description of USB class ...
Laser Target for Simulating Shooting Sport
Poloch, Martin
Czech
This work deals with complete design of a system for simulating shooting sport. Key aspects of the design are similarity with shooting from ordinary mechanical weapons, multifunctionality and low costs. The core of the simulation is a laser transmitter in the weapon and a photosensitive receiver in the target. The final version of the system is controlled by a group of microcontrollers and provides several types of feedback. For example lighting the place that has been hit with LED, sound signals, displaying shooting results, or evaluating them with a computer.
Keywords:
LASER; microcontroller; ATmega8; LED; photosensor
Available in a digital repository NRGL
Laser Target for Simulating Shooting Sport
This work deals with complete design of a system for simulating shooting sport. Key aspects of the design are similarity with shooting from ordinary mechanical weapons, multifunctionality and low ...
Printed Planar Inductor
Krejčí, Pavel
Czech
This work deals with issues of application of the thick film technology in the field of planar inductors. It presents the essential impact of parameters on designed coil. Subsequently it describes equation for calculation of inductance of single layer inductor. Finaly, exemples of designed coil are shown and some technological ways are proposed.
Keywords:
planar inductor; printed circuits; thick film technology; non-conventional application of thick film; Greenhouse formula
Available in a digital repository NRGL
Printed Planar Inductor
This work deals with issues of application of the thick film technology in the field of planar inductors. It presents the essential impact of parameters on designed coil. Subsequently it describes ...
Designing a Directional Acoustic Transmitter
Hladký David
Czech
In this paper the parametric transmission of sound through an amplitude-modulated ultrasonic wave, using automatic demodulation in a non-linear environment is discussed. Methods for the processing of the transmitted signal are presented; these techniques employ modified amplitude modulation to suppress the environmental effects, which otherwise distort the signal. A special emphasis is placed on the mathematical instruments describing the parametric sound beam transmission in a non-linear medium. Within our research, we fabricated a parametric speaker consisting of 50 ultrasonic acoustic transducers with the resonant frequency of 40 kHz. The functionality of the acoustic source was verified via measurement of the spatial radiation characteristics and through determination of the total harmonic distortion (THD). In order to control the parametric speaker, a digital element comprising a sampler, a transducer of the input transmitted signal, and a microcontroller to preprocess this signal and to facilitate the amplitude modulation of the ultrasonic carrier wave is designed. The applied algorithms were analyzed to establish their computational intensity; such an analysis enabled us to select a microprocessor basis suitable for the implementation of the signal processing algorithms.
Keywords:
Parametric acoustic array; parametric loudspeaker; amplitude modulation; STM32F411
Available in a digital repository NRGL
Designing a Directional Acoustic Transmitter
In this paper the parametric transmission of sound through an amplitude-modulated ultrasonic wave, using automatic demodulation in a non-linear environment is discussed. Methods for the processing of ...
Plagiarism Detection in Program Codes Using Mapping Technique
Kašpar, Jakub
English
The aim of this paper is to introduce the problem of plagiarism and propose a method for plagiarism detection in program codes. In the first part of this paper the basic definition of plagiarism is described. Further in the paper the principle of preprocessing and localization process for signs of plagiarism is introduced. The last part of this paper presents an algorithm for comparison of the detected signs to get the best results possible. The detector was tested on student projects from the BTBIO study program.
Keywords:
plagiarism; detection; preprocessing; signs; mapping
Available in a digital repository NRGL
Plagiarism Detection in Program Codes Using Mapping Technique
The aim of this paper is to introduce the problem of plagiarism and propose a method for plagiarism detection in program codes. In the first part of this paper the basic definition of plagiarism is ...
Rotor Slot Optimization of an Induction Motor
Szekeres, Vojtech
English
Proposed paper is dealing with optimization of an induction machine rotor slot by using artificial intelligence. Electrical machine under investigation is commonly manufactured induction motor with simple deep rotor bars. Goal is to achieve the highest possible value of efficiency and power factor. This paper is dealing with description of rotor parametric model and set-up of the optimization algorithm. Results of optimization are proposed as well.
Keywords:
induction motor; rotor slot; optimization; SOMA; Ansys Maxwell; RMxprt
Available in a digital repository NRGL
Rotor Slot Optimization of an Induction Motor
Proposed paper is dealing with optimization of an induction machine rotor slot by using artificial intelligence. Electrical machine under investigation is commonly manufactured induction motor with ...
Effect of Plasma Oxidation of Carbon Working Electrode on Its Electrochemical Response
Koporec, Lukáš
Slovak
Screen-printed electrochemical sensors are very perspective because they are much smaller than common electrodes used in electrochemistry, portable, ecological and can be very easily modified in order to increase their sensitivity and selectivity for specific analytes. In this study, plasma treatment was used to modify the carbon working electrode of a screen-printed threeelectrodes system. Plasma treatment was performed using RF plasma discharge in argon/oxygen atmosphere. The plasma modified electrodes exhibited considerable enhancement in electrocatalytic activity towards studied electroactive compounds.
Keywords:
Screen-printing; carbon electrode; plasma treatment; cyclic voltammetry; electrochemical sensor
Available in a digital repository NRGL
Effect of Plasma Oxidation of Carbon Working Electrode on Its Electrochemical Response
Screen-printed electrochemical sensors are very perspective because they are much smaller than common electrodes used in electrochemistry, portable, ecological and can be very easily modified in order ...
NRGL provides central access to information on grey literature produced in the Czech Republic in the fields of science, research and education. You can find more information about grey literature and NRGL at service web
Send your suggestions and comments to nusl@techlib.cz
Provider
Other bases