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Author Topic: Wind Speed and Direction Sensor  (Read 5638 times)
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Grece
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Hello people!

I am new to the arduino world and i am thinking of making my first serious project. A small weather station.

What i have difficulties to find is a proper (and not too expensive) sensor to measure wind speed and direction.

Any suggestion will be highly appreciated!

Thanks for your time
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Massachusetts, USA
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Maybe this ultrasonic anemometer project might help:
http://forum.arduino.cc/index.php/topic,53569.0.html
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Grece
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Is there any ready affordable anemometer in the market or the only solution is a DIY one ?
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Is there any ready affordable anemometer in the market or the only solution is a DIY one ?
What does your personal research tell you?  A quick look with Google shows commercial speed and direction sensors (anemometer and windvane) start at about $60.  You can get an anemometer alone for $30 and a windvane alone for $30.

What do you consider "not too expensive"?
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Grece
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Is there any ready affordable anemometer in the market or the only solution is a DIY one ?
What does your personal research tell you?  A quick look with Google shows commercial speed and direction sensors (anemometer and windvane) start at about $60.  You can get an anemometer alone for $30 and a windvane alone for $30.

What do you consider "not too expensive"?

$60 is fine. Could you please give me the link ? I might doing something wrong with the search. I find only too expensive wind sensor ($200+)
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If you want add a few other sensors you can get this unit for about $80:

http://www.ebay.com/itm/1-set-of-Spare-part-outdoor-unit-for-Professional-Wireless-Weather-Station-/121159289733?pt=US_Weather_Meters&hash=item1c35a80b85

1). Wind speed sensor (1 unit)
2). Wind direction sensor (1 unit)
3). Rain gauge sensor (1 unit)
4). thermo-hygro sensor (1 unit)
5). Installation rack (1 unit)

They have the wind speed alone for $23:
http://www.ebay.com/itm/Spare-part-for-weather-station-to-test-the-wind-speed-/121128404439?pt=US_Weather_Meters&hash=item1c33d0c5d7

Wind Direction, $28.95:
http://www.ebay.com/itm/WEATHER-STATION-REPLACEMENT-PARTS-WIND-DIRECTION-SENSOR-WS1080-WS1090-WS2080-/251177780390?pt=US_Weather_Meters&hash=item3a7b5cc4a6

This set-up for $39.99 includes speed and direction sensors:
http://www.ebay.com/itm/Springfield-Digital-Wireless-Weather-Station-with-Wind-Speed-NIB-04165-/190898441707?pt=US_Weather_Meters&hash=item2c726f0deb


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Be careful buying el cheapo anemometers off the net .
Many will not come with any calibration data which means that you wont know what the relationship between spin rate and the wind speed actually is.
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Grece
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This seems very nice. But how do you conect these RJ45 to arduino ?

Be careful buying el cheapo anemometers off the net .
Many will not come with any calibration data which means that you wont know what the relationship between spin rate and the wind speed actually is.


Thank you, i will keep that in mind
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Grece
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Any idea guys on how to connect this

http://www.ebay.com/itm/1-set-of-Spare-part-outdoor-unit-for-Professional-Wireless-Weather-Station-/121159289733?pt=US_Weather_Meters&hash=item1c35a80b85

to arduino ? Or any other sensor with rj45 cable ?
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Nantes (FR)
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You can see that: http://www.lcjcapteurs.com/?lang=en
For an ultrasonic anemometer, is "not too expensive"!
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Christophe
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You can see that: http://www.lcjcapteurs.com/?lang=en
For an ultrasonic anemometer, is "not too expensive"!
How much does your product actually cost?

How easy is it to interface your product with an Arduino?

The closest I could find to a price is: http://fr901675757.fm.alibaba.com which says "FOB Price: EUR 335 - 515 / Unit".
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Nantes (FR)
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Connect a CV7-V is very simple, the communication protocol is the NMEA0183 standard, such as GPS.
Just manage a serial link at 4800 baud, 8 bits, ASCII.
We use the phrase MWV ($ IIMWV) for the anemometer and wind vane ultrasonic sentence XDR ($ WIXDR) for the temperature of the wind.
For a short distance (<2m) between the sonic wind sensor and the card, you can connect the wire directly NMEA- wire to µprocessor Rx and 0V reference. For a long connection (up to 300 m), it is preferable to use an opto-coupled input.
For RS232 input, you use the NMEA + wire and 0V reference.

The price range that you found on the web is for CV7, ordered by 100 pièces and ordered by one piece.
Contact me by mail for full price liste.
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Christophe
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Trying to get a solid state wind sensor for a sailboat application and ultrasonic is just too expensive.  Found this thermal system:



You goggle her at: 2d Wind Sensor Taylor Barton and pickup some more info.  It looks promising and I hope they carry it through.

Cheers,
Mike
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Taylor Barton's 2D wind sensor is very interesting. I emailed her and she was kind enough to send me a pdf copy of the published paper (which you otherwise have to pay some ripoff journal publisher for).
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"It seems to run on some form of electricity"

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You can read the first few pages of the paper here:
http://books.google.com/books?id=kECeSA1qw2QC&pg=PA97&dq=%22Discrete-Component+2D-Array+Wind+Sensor%22&hl=en&sa=X&ei=MENUUrGrCba54APghYGwAg&ved=0CEYQ6AEwAA#v=onepage&q=%22Discrete-Component%202D-Array%20Wind%20Sensor%22&f=false
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