GOOD MORNING !

canolaokahumpkaΗλεκτρονική - Συσκευές

2 Νοε 2013 (πριν από 4 χρόνια και 10 μέρες)

99 εμφανίσεις

Micro Weather Systems
-

MWS

GOOD MORNING !

Micro Weather Systems
-

MWS

Who Are We?


Clint Lee


John Crankshaw

Micro Weather Systems
-

MWS

Why are we here?

Contracted by Design Co, Ltd.

Of


San Diego

Micro Weather Systems
-

MWS

What are we doing?

Designing and Manufacturing a

Compact


Low Cost


Rugged

Weather Station

Design Goals and Constraints


Compact


Easily Installed


Extended Deployment


90 to 120 Days


Low Cost


Rugged

Weather Station Requirements:

Weather Station


Atmospheric Pressure


Temperature


Relative Humidity


Wind Speed


Wind Direction


Rain Fall


What Weather inputs do we monitor?

Conceptual Diagrams

Functional Diagram

Accomplishments

Completed Tasks in Weather Station Project


MCU Selection


ATMEL ATMEGA644P


Serial Flash Programming via SPI bus.


Schematic Capture of MCU sub
-
system


Initial proto
-
board layout of MCU sub
-
system

Micro
-
controller Activities

Sensor Activity


Temp & Humidity PCA designed and Fab’d


Pressure Sensor PCA designed and Fab’d


Wind Sensor Mock up and Calibration Testing


Microcontroller
-
Schematic

Microcontroller
-
Layout

Proto
-
Type MCU

Wind Sensor Testing

Sensor Update

Pressure Sensor PCA

Temp & Humidity PCA

Solar Cell Assembly

Project Timeline

Budget Update


Original Budget


Commercially Available Parts:


Temperature and Humidity sensor

$ 28.95


Pressure sensor


$ 23.40


Real
-
Time clock


$ 4.13


Crystals



$ 0.28


Flex sensors


$ 64.75


MCU



$ 7.76


Flash memory


$ 3.48


Instrumentation amplifiers


$ 9.30


Solar array



$ 22.00


Batteries



$ 27.00


Assorted resistors and capacitors

$ 5.00

Fabricated Parts:


Plastics (wind sensor)


$ 5.00


Plastics (rain sensor)


$ 5.00


Assorted parts


$ 10.00

Housing:


PVC



$ 10.00


Silicone sealant


$ 5.00








Total:

$ 231.05



Current Expenditures


Commercially Available Parts:


Temperature and Humidity sensor

$ 28.95


Pressure sensor


$ 23.40


Real
-
Time clock x 2


$ 8.26


Crystals x 2


$ 0.56


Flex sensors x 5


$ 64.75


MCU



$ 7.76


Flash memory


$ 3.48


Instrumentation amplifiers


$ 0.00


Solar array



$ 10.99


Batteries



$ 0.00


Assorted resistors and capacitors

$ 0.00

Fabricated Parts:


Plastics (wind sensor)


$ 2.00


Plastics (rain sensor)


$ 0.00


Assorted parts


$ 10.00

Housing:


PVC



$ 0.00


Silicone sealant


$ 0.00








Total:

$ 160.15


Development Activities

Current Project Development Activities

Micro
-
controller development activities

Sensor development activities


MCU


Serial Interface code


MCU


RTC Interface code


MCU


Temp & Humidity code


Tipping Bucket sensor implementation


Hall
-
Effect


Wind Speed Sensor


calibration and implementation


Pressure Sensor amplifier circuit

Conclusion

Micro Weather Systems
-

MWS

Question and Answers

Further Inquiries can be made by emailing:

Clint Lee


clee@mws.sdsu.edu

John Crankshaw

jcrankshaw@mws.sdsu.edu

Or Visit our Website:



http://mws.sdsu.edu

Thank You For Your Time!