Ultrazvukový anemometr

| Kategorie: Diplomové, bakalářské práce  | Tento dokument chci!

Práce popisuje principy a problémy při realizaci ultrazvukového anemometru. Je popsán princip výpočtu rychlosti větru a následné korekce výpočtu. Pro realizaci jsou využity ultrazvukové sensory a microcontrolér ARM Cortex-M3. Práce se zabývá generováním PWM signálu, jeho analogovou filtrací, zesílením a odvysíláním. Na přijímací straně jeto nízkonapěťový zesilovač a komparátor. Vyvíjený kód je popsán pomocí vývojového diagramu.

Strana 6 z 49

Vámi hledaný text obsahuje tato stránku dokumentu který není autorem určen k veřejnému šíření.

Více info o tomto dokumentu zde!

Jak získat tento dokument?

Poznámky redaktora

.......................................................1 Murata ultrasonic sensors................................................................................................................................................................................2 1...........22 4....1 Printed circuit board....................................................................TABLE CONTENT List Images.............................................................................20 4...........................16 4 Implementation..............................................................................................................1 Main Objective.........................................2 Oscilloscope captures.........................................................................................................................................................3 Main function............3 Measured wind speed and airspeed vectors...............................................................13 3....2 PWM filter and amplifier.....4.......3 2 Component description....1 Description Probe..........................................................14 3...8 2..............2 Interrupt handler functions.......2 1......................................................................................................................................................3 Amplification received signal and comparator.......................................................................21 4.........................................................................................................2 evaluation board...................11 3 Analysis and Design...........................1 Block diagram...........21 4.......................................................................................................................13 3...........................................................9 2.........................1 1 Theoretical background..........................................................................................................................................4 Non-inverting operational amplifier.............................................21 4.........6 2................................................................4.....5 2....................10 2......................19 4...................................4.....19 4................1 Header files, Global variable and Defines.........................................viii Introduction....................................................................5 Comparator...........................................................6 Voltage inverter..............3 Code development...............................3 Microcontroller...................................................................................................7 2..................23 ......................................................................................4 Flowcharts.............1 Correction speed.............................................................2 1........5 2.............7 Temperature sensor...........................2 Time delay windy conditions and wind speed.................

---

---