|
|
Stereometric ultrasonic distance sensor
Nguyen, Thuc Tuyen ; Marada, Tomáš (referee) ; Zuth, Daniel (advisor)
This bachelor thesis deals with designing and realizing a sensory system for detecting the presence of targets and its location. Target is located by two parameters: the distance and the view angle from sensory system. This system is set up by two ultrasonic distance sensors SRF02, driven by microcontroller Atmega128, using I2C communication protocol. The placement of the two ultrasonic distance sensors is optimized by using mathematical model, it enables the system to perform optimum accuracy and be able to observe the largest area possible. The measurement results then will be shown on LCD display module or they can be saved and used as input parameters for other tasks.
|
|
|
Design of control units for semiautomous convoy
Kolomazník, Vojtěch ; Růžička, Michal (referee) ; Mašek, Petr (advisor)
This bachelor thesis deals with a design of a low level control units for a semiautonomous convoy. A crucial purpose of control units is convoy vehicles control, where the designed unit will be able to control of steering and speed actuators, where PWM signals were used for actuators control. These are based on a high level system commands. Control unit is able to send ultrasonic sonar and battery level data to the high level control unit. The communication between high and low level control systems provides an USART communication interface.
|
|
|
Minidarpa robot - electronic layout design
Groulík, Tomáš ; Burian, František (referee) ; Kopečný, Lukáš (advisor)
Bachelor`s thesis is bent on problems mobile robotics. In forepart is genarally circumscribed architecture AVR and individual used microprocessors. Next part is intend for distance evaluation by the help of ultrasonic sensores and concrete description of used modulus. Last part is specialized in motor control and regulation of DC motor. There are described possibilities of motor control by the help of PWM and used draft of motor control and projecting of regulator.
|
|
|
Arduino programming with Matlab/Simulink
Bartoněk, Jan ; Hůlka, Tomáš (referee) ; Matoušek, Radomil (advisor)
The content of this bachelor´s thesis is a research of possibility of programming an Arduino microcontroller using Matlab/Simulink program. Part of the thesis is also a brief research of the Arduino platform. Furthermore, two practical tasks were created and described in this work, which can be used for educational purposes. The first being an application demonstrating the use of the DHT22 sensor, created using App Designer, which is part a of Matlab. The second task deals with the regulation of the position of a levitating body in the tube, using Simulink. Demonstration videos were created for both tasks and are part of this work.
|
|
|
Lowcost proximity sensor for mobile robot based on SRF05 sensor
Majerčík, Pavel ; Najman, Jan (referee) ; Krejsa, Jiří (advisor)
This master's thesis deals with determination of properties of the ultrasonic sensor SRF05. It is about finding factors that distort or have other negative effects in any way on the proper functionality of these sensors. First of all, it was necessary to program a chip mounted on signal processing board for correct functionality and operation of sensors. Then a few sets of measurements were done to determine the behaviour of sensors for different distances. In addition, we had to carry out many more measurements to find out the influence of temperature, light conditions, material of the sensed surface or cross-noise caused by the use of multiple sensors. In the next step, the approximate shape of the transmitted ultrasound was investigated to determine the zone of detection. The last task of this thesis was to compare the SRF05 sensors with other ultrasonic sensors from different manufacturers.
|
|
|
Development of a system for measuring the motor skills of small animals
Ryšavá, Michaela ; Götthans, Jakub (referee) ; Frýza, Tomáš (advisor)
The main objective of the project was to explore methods of motion measuring using sensors, select a suitable method, create a system and a application for measuring the speed of small animals. It is a dedicated project to measure a research in coperation with Masaryk university, which aimed to explore the the mobility of lizards living in the Czech Republic. In particular, commercial systems provide a solution by analyzing camera data. For the desired speed measurement of various shapes, the implementation of image processing is cost-ineffective and more complicated than using electronic sensor solutions. The most appropriate solution an infrared optical gate appears, due to constant results accuracy when changing the colors and sizes of measured individuals, small size and relatively easy implementation. Furthermore, a straight track and an electronic system using the selected optical gate concept has been constructed and implemented software for control and evaluating the entire measurement.
|
|
|
Linear drive control based on object motion detection
Novotná, Eliška ; Harabiš, Vratislav (referee) ; Sekora, Jiří (advisor)
The diploma thesis deals with motion detection and linear drive control. The diploma thesis is divided into a theoretical part, where the part of ultrasonic sensors and linear actuators, including the types of individual linear actuators, is mainly described and explained. The practical part presents the solution itself, both in terms of hardware and software. This part therefore contains the system design together with the flowcharts and the simplified 3D design of the structure. At the end of the work is given a sample of the final structure.
|
|
|
Smart water pump for water container
Janík, Vladimír ; Lattenberg, Ivo (referee) ; Caha, Tomáš (advisor)
This thesis deals with the implementation of a system for measuring the amount of water in the tank using a 12V water pump. The whole system is controlled by the ESP32 microcontroller. The introduction deals with the theoretical analysis of various principles of measuring the level of liquids. The next part deals with the procedure of the construction of the measuring device and its theoretical analysis. The last part of the work deals with the control of the pump and the individual functions that provide this control. The ultrasonic distance sensor AJ-SR04M was chosen for the implementation of the device. The volume of water in the tank is calculated from its data. The ESP32 microcontroller provides system control via a web interface. The whole system was implemented and tested to measure the volume of water and its pumping in the IBC container.
|
|
|
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.
|
|
|
Arduino programming with Matlab/Simulink
Bartoněk, Jan ; Hůlka, Tomáš (referee) ; Matoušek, Radomil (advisor)
The content of this bachelor´s thesis is a research of possibility of programming an Arduino microcontroller using Matlab/Simulink program. Part of the thesis is also a brief research of the Arduino platform. Furthermore, two practical tasks were created and described in this work, which can be used for educational purposes. The first being an application demonstrating the use of the DHT22 sensor, created using App Designer, which is part a of Matlab. The second task deals with the regulation of the position of a levitating body in the tube, using Simulink. Demonstration videos were created for both tasks and are part of this work.
|
guest ::
