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Laser Diode Controller with Analog Modulation
Král, Vojtěch ; Dobesch, Aleš (referee) ; Barcík, Peter (advisor)
The Bachelor thesis deals with a design of the controller for a laser diode with the possibility of analog modulation. The basic parameters (current, voltage, temperature and optical power) are shown on an alphanumeric LCD display with the driver SPLC780. Core of this project is the laser driver MLD203CHB. Control is realized by buttons, which are setting the value of digital potenciometre, which is connected to the reference. Everything is controlled by the microcontroller ATMGEA328P. Temperature is measured with the analog sensor TMP36. Cooling of the laser diode is implemented by a peltier module controlled by the microcontroller.
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The device for temperature sensors calibration
Tomíček, Pavel ; Novotný, Radovan (referee) ; Levek, Vladimír (advisor)
The goal of this thesis is to design a device that allows calibrating temperature sensors. The device is made of a thermal chamber with Peltier module. Part of this work discusses means of temperature measurement, control and regulation. This work describes design of circuit and PCB. The device can precisely control temperature and temperature profile. It can also automatically calibrate Pt100 and Pt1000 sensors. User can control the device either by interface on the device or from a computer. Temperature range inside the thermal chamber is from 7,5 °C to 115 °C with ±0,10 °C error.
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Control and regulation of the temperature of the drug transport box
Maťašová, Daniela ; Králík, Martin (referee) ; Sekora, Jiří (advisor)
This bachelor thesis deals with the solution of drug transport in a transport box over longer distances. The work also deals with sensors for temperature measurement and methods of its control and regulation. The essence is the design, implementation and verification of the functionality of the transport device, which allows the display of continuous information about the state of the temperature inside the transport box. Temperature control is powered from the car’s on-board network and temperature sensing is powered independently. The transport device allows the setting of the limit temperature up to 35 °C, while exceeding it is indicated by an acoustic and visual alarm. The transport box, which is the result of the work, allows the transport of drugs, and ultimately meets all the requirements of the assignment.
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Thermoelectric cloud chamber
Tomčan, Petr ; Chýlek, Radomír (referee) ; Brázdil, Marian (advisor)
This experimental bachelor thesis deals with the design and construction of a thermoelectric cloud chamber for monitoring natural radioactivity and charged particles. The theoretical part of this experimental work characterizes the basic physical principles that are applied in cloud chambers, particles observable in cloud chambers and other types of cloud chambers. The practical part of the work deals with the design and construction of a diffusion cloud chamber with emphasis on intensive heat dissipation. Part of the work is the drawing documentation needed for production and assembly.
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Active cooling of the car headlight
Žlebek, Jan ; Mauder, Tomáš (referee) ; Štětina, Josef (advisor)
The main goal of this bachelor thesis is to design the cooling of the headlamp by using a Peltier module. The first chapter is to acquaint the reader with the possibility of heat transfer. Further work is focused on various types of heatsinks and printed circuit board. The third part describes the principle of functions of Peltier's module. The last part of the work contains the design of the heatsink assembly and the design solution of fixing the cooling assembly in the housing.
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The device for temperature sensors calibration
Tomíček, Pavel ; Novotný, Radovan (referee) ; Levek, Vladimír (advisor)
The goal of this thesis is to design a device that allows calibrating temperature sensors. The device is made of a thermal chamber with Peltier module. Part of this work discusses means of temperature measurement, control and regulation. This work describes design of circuit and PCB. The device can precisely control temperature and temperature profile. It can also automatically calibrate Pt100 and Pt1000 sensors. User can control the device either by interface on the device or from a computer. Temperature range inside the thermal chamber is from 7,5 °C to 115 °C with ±0,10 °C error.
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Solar Radiation Measurements
Chvátal, Michal ; Pikula, Stanislav (referee) ; Beneš, Petr (advisor)
The Bachelor‘s thesis discusses design and verification of an inexpensive method for indicative measurement of direct and diffused solar radiation. The reason for the measurement of solar radiation is the estimate the heat gain of buildings. In this paper the difference between thermoelectric generator and cooler is described. There is also described how to choose a suitable module for solar radiation measurement. The design of the measuring circuit and the construction of sensor are also described. Eventually the measured values are compared with the values from the commercial pyranometer SG420.
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Laser Diode Controller with Analog Modulation
Král, Vojtěch ; Dobesch, Aleš (referee) ; Barcík, Peter (advisor)
The Bachelor thesis deals with a design of the controller for a laser diode with the possibility of analog modulation. The basic parameters (current, voltage, temperature and optical power) are shown on an alphanumeric LCD display with the driver SPLC780. Core of this project is the laser driver MLD203CHB. Control is realized by buttons, which are setting the value of digital potenciometre, which is connected to the reference. Everything is controlled by the microcontroller ATMGEA328P. Temperature is measured with the analog sensor TMP36. Cooling of the laser diode is implemented by a peltier module controlled by the microcontroller.
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Autonomous outdoor system for growing plants
Schmidt, Dominik ; Lukeš, Zbyněk (referee) ; Petržela, Jiří (advisor)
This diploma thesis deals with maintaining possibilities for appropriate climatic conditions in outdoor greenhouse. The importance for growing plants is an appropriate temperature, humidity and adequate supply of water. The aim of the study is to suggest an apparatus sustaining beforehand defined conditions in the greenhouse with minimal requirements for maintenance. Apparatus uses analogue control by applying photosezistor and thermistor. For power supply are DC-DC converters used.
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Autonomous outdoor system for growing plants
Schmidt, Dominik ; Lukeš, Zbyněk (referee) ; Petržela, Jiří (advisor)
This diploma thesis deals with maintaining possibilities for appropriate climatic conditions in outdoor greenhouse. The importance for growing plants is an appropriate temperature, humidity and adequate supply of water. The aim of the study is to suggest an apparatus sustaining beforehand defined conditions in the greenhouse with minimal requirements for maintenance. Apparatus uses analogue control by applying photosezistor and thermistor. For power supply are DC-DC converters used.
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