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Contactless meter of the water level
Pálka, Václav ; Boleček, Libor (referee) ; Říčný, Václav (advisor)
This paper describes the design and construction issues contactless meter water level in an enclosure (typically well) in distance measurement units of meters. The work includes theoretical analysis of possible ways to measure and describe the design, along with the design of individual functional blocks and verifying their function
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Inductive Sensors
Šimberský, Michal ; Havránek, Zdeněk (referee) ; Bejček, Ludvík (advisor)
Bachelor thesis deals with inductive sensors. The thesis introduced the history of sensors, their advantages and disadvantages over other types of sensors. There are described different types of inductive sensors. Each type of sensor is described in terms of physical principles. In thesis there are listed examples of using different types of practice. Preparation was constructed to demonstration the characteristics and differences between eddy currents sensors and inductive oscillator sensors.
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Optical Proximity Sensor with Time-of-Flight Measuring Principle
Mlatecová, Hana ; Kopečný, Lukáš (referee) ; Žalud, Luděk (advisor)
3D optical proximity scanner is described in this thesis. The sensor is marked as 03D201 and is made by Ifm electronic, GmbH company. The text also describes the basic characteristics, measuring principle, PC connection method and communication. A program for communication between PC and sensor was created and named O3D_Application. This program provides functions for real-time data transfer and visualization. Measured data can be saved easily by this program. The thesis also contains an analysis of measured data and parasitic parameters of the sensor.
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Localization in Wireless PAN
Polok, Zbyszek ; Šimek, Milan (referee) ; Hynčica, Ondřej (advisor)
This bachelor thesis deals with the problem of localization in wireless sensor network. First, ZigBit 900 Modules equipped with chip for wireless communication (AT86RF212) are used to measure the signal strength in the area of Brno University of Technology. The recorded values are then processed using trilateration localization techniques and Euclidean propagation methods. After detecting negative effects on the calculation of the position sought, a filtering method for the calculated values is proposed. In addition, an algorithm determining a sufficient number of reference values for loss rate is also designed to locate all the positions sought. By virtue of these algorithms the trilateration localization method is optimized.
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Design and implementation of an ultrasonic sensor for the educational platform
Slabý, Vojtěch ; Bastl, Michal (referee) ; Spáčil, Tomáš (advisor)
Bachelor’s thesis is focused on a design, fabrication and implementation of an ultrasonic sensor module, which will serve for a distance measurement for an education developer shield based. This sensor should be used as an original module which fits in a requested size format. Now is used a sensor HC-SR04 which exceeds size and voltage needed for a module and uses an adapter, which is not rigid. Bachelor’s thesis is focused on a topic of a existing ultrasound principles and its function for ultrasound distance measurement and calculating necessary values. Thesis includes a list of existing solution for designing a monostatic or a bistatic transdcuers sensors. Our module is compared to those solutions and there is also an overview on a two most used methods for a circuit design which controls a transducer. You can find a designed circuits for creating a prototype PCBs, which heart is a microcontroler PIC16F1769. Programming is handled by a PicKit 3, MPLab X IDE in „C“ language. Communication with a Jobst shield is handled by SPI. Result of this thesis is a design, fabrication and use of two prototype PCBs. First PCB is not tied by a size request and serves for a basic circuit testing and basic distance measurement and the second PCB is in a desired size and serves for distance measurement testing and communication via SPI. These prototypes were fabricated and tested in a way to fulfill set task goals.
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Photogrammetric Image Analysis
Velebová, Jana ; Španěl, Michal (referee) ; Zemčík, Pavel (advisor)
This thesis is dedicated photogrammetric image analysis that makes it possible from your photos with the help selected methods to determine the location and dimensions of objects recorded on them. There are explained the basics of photogrammetry and its current application. Chapters focused on digital imaging describing its characteristics, treatment options and key points findability for the scene calibration. For a comprehensive view are in this thesis introduced examples of existing software, its possibilities and use in practice.
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Range Measurement Using Radar
Sekera, Tomáš ; Herout, Adam (referee) ; Maršík, Lukáš (advisor)
This bachelor thesis is focused on range measurement with a frequency modulated continuous wave radar. First of all, radar signal processing will be presented. Furthermore, will be described a suitably choosen methods and their principles. In the end, a choosen methods will be tested on measured data and subsequently their evaluation is performed.
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Distance measurement using sensors of mobile phone
Hubr, Ivo ; Endrle, Pavel (referee) ; Lattenberg, Ivo (advisor)
Distance and the associated parameters can be measured by specific sensors mobile device. Introduction The work focuses on the description of the sensors and the effects on their accuracy. To measure the distance, there is a number of good practices, which were described and demonstrated the application implemented source code for the Android platform. The project works with a total of three sensors, namely accelerometer, magnetometer and camera. The main objective of this work is the definition and application of methods for measuring distance using the appropriate sensors.
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Distance measurement by ZigBee technology
Čepl, Josef ; Šporik, Jan (referee) ; Hanák, Pavel (advisor)
The master's thesis deals with problems which is associated with rough detection of distance between wireless modules based on ZigBee technology. In the first logical part it theoretically describes this technology and their characteristics. This section gives basic informations needed to understand the operation of wireless communications and also acquaint him with some of the terms from this sphere. Next thing is description of the medium access together with a detailed description of functions that are crucial for deter-mining the signal strength. The second part is devoted to describe the 1321XDSK-BDM development kit. Another section is devoted to the design of the user's interface for displaying measured data. It consists of a theoretical design, which describes the initial vision of the device accompanied by solution of communication between wireless module and the proposed device. Follows the design of the involvement in Eagle software and explanation of the various components. In the last two chapters of the whole logical structure is described construction of the device and simple user's guide. The following chapter talks about the selection of suited application, necessary changes and own implementation of source code. There is even a description of important features and components of the application. The penultimate chapter contains a distance measurement in terrain using wireless modules and designed device. Here are tested different influences on the final distance measurement accuracy. In conclusion there is a debate over the results achieved. Particular, this section includes an assessment of precision measuring methods and evaluates aplicability of this method in practice.
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Stereoscopic sensor for distance measurement
Vavroš, Ondřej ; Říha, Kamil (referee) ; Hasmanda, Martin (advisor)
This master's thesis will take us through theoretical procedure that allows us to determine the distance of an object by stereoscopic sensor. Part of this work presents the description of the steps to achieve image of objects, calibraton and rectification. At the next part our study provides an overview of algortihms for creating disparity maps and determining the distance of the object from sensor. In the following part of thesis deals with the implementation of these processes into aplication which aim is to measure the distance.
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