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Digital Weather Station Overview
What does it do? How does it do what it does? How did we test it? What are possible further enhancements?
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What does it do? Measures Wind Direction Measures Wind Speed
Measures Temperature Outputs these measurements to a LCD
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* All ground and power pinouts have been eliminated for tidiness
Overall Structure Hardware Modules Altera Chip Output Interface Wind Direction Vdd Vo Wind Direction Decoder/Encoder LCD C o n t r l e 24 LCD Wind Speed Wind Speed Decoder/Encoder 24 11 Temperature Temperature Encoder 24 4 Ground INVSTOBE * All ground and power pinouts have been eliminated for tidiness
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Wind Direction ASCII Encoder
Altera Chip Hardware Module Wind Direction ASCII Encoder Input A To LCD controller D B 24 C
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Wind Speed Hardware Module Altera Chip Wind Speed Module Sensor 1
Down Counter Debounce Sensor 2 24 Big Counter and ASCII Encoder “Code Wheel”
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Temperature Altera Chip TLC7135C 4.5 Digit Precision LM35C Analog
to Digital Converter LM35C Precision Centigrade Temperature Sensor BCD data Temperature Serial Signal Decoder and ASCII Encoder 24 Polarity INVSTROBE
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LCD Controller LCD LCD Controller Data in 24 8 24 enable 24
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Further Enhancements Questions? Humidity measurement
RS-232 serial output to computer Rain Detection Module Hardware Improvements (I.E. better Anemometer, better weathervane) Questions?
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