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 Main Objective.............4...........................9 2....................................................21 4................................................................................................................3 Measured wind speed and airspeed vectors...........5 2..........................................................................................................2 Time delay windy conditions and wind speed..............................................13 3......................................1 Description Probe...................................................19 4..2 PWM filter and amplifier.................................................................16 4 Implementation.........................2 1...........................................................23 .................................................................7 Temperature sensor........................................4 Flowcharts...............................6 Voltage inverter...............................2 1......3 Code development...........................................................................................................................3 Amplification received signal and comparator.......................................21 4..................................................viii Introduction.........5 Comparator.20 4..............................................6 2.....................................................................................................19 4......................4..........................................................................3 Main function.................................4.............................................1 Header files, Global variable and Defines.......................................................................2 1..............................2 evaluation board.22 4.........1 Printed circuit board................TABLE CONTENT List Images..............................10 2....21 4.1 Block diagram.................................................2 Interrupt handler functions................4 Non-inverting operational amplifier.............1 Correction speed.............8 2............13 3.........................................................................................................................................5 2..........................................................................................................................................................................14 3......................................................................11 3 Analysis and Design........................................................3 2 Component description...........................1 Murata ultrasonic sensors.......................................................................................7 2....................................................3 Microcontroller............................2 Oscilloscope captures...............................1 1 Theoretical background.........................................................................................................

---

---