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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.
PCB design was created with Eagle software CadSoft.
Illustration 4. After
that etched board hydrochloric acid with hydrogen peroxide.IMPLEMENTATION
4. each board larger side are two lines brought out pins with 2,54 mm. Then illuminated film was developed sodium hydroxide solution. Final board was
cleaned alcohol and drilled.
For this type component optimal makes routes wider. All integrated circuits are DIP case. Program show unconnected pads and
pins and include design rule check.1 Printed circuit board
We realized another various analog circuits.1: Made module board photos
19
. [4]
All used electronics components are axial, placed top and soldered bottom of
PCB. Made board
with it's mother board and from bottom layer images below. All have 0,4 with same
space between them.
PCB was created positive photo-way process. Module board can be
connected above board via connectors.
Dimensions our module was given dimensions board.
We tin-plated the board first and then planted used components. But from length can’t occupy more than don’t
cover display. can set various design rules minimum pads
width, minimum route width minimum clear space between routes and this tool then
correct final design according ours demands. Mirror inverted layout was printed tracing paper put board and
illuminated.
Between them free space with width mm. It’s cheap way how create PCB
in laboratory with commonly available chemical substances and positive photo-resist
fiberglass board. Its width 62
mm and length 116 mm. This multi platform OS
software easy use, ideal for manual routing. first circuits were completed solder-
less breadboard and then evaluation board module was created
