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

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

---

---