I want to make an ultrasonic air flow meter. Which Arduino board is suitable for it?

Hi,

I want to make an ultrasonic air flow meter. Which Arduino board is suitable for it? I would use two ultrasonic sensor to measure the difference of transmit time to calculate the air flow velocity. So I also want to know which circuit / circuit diagram I can use to connect between the ultrasonic sensors and the Arduino board.

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michaelkellett over 10 years ago in reply to Former Member +1

Kelvin, suppose your tube is 15cm diameter and the spacing between the transducers along the tube is 20cm (sounds OK for a cooker hood chimney). The path length will be 36cm so the sound will take v. approx…

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0 Robert Peter Oakes over 11 years ago

Do you know what range of time will be involved

this would be the time from the outbound ping to the sensor on the other end receiving it (Based on distance and air velocity)

with this info you can better narrow down what kind of performance you will need from the system and therefore identify the right controller type

are you reflecting the ultrasonic ping back to the same place as it was sent or having separated receiver and transmitter

what transducers are you going to use ?
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0 mcb1 over 11 years ago in reply to Robert Peter Oakes

Have a look at the links I posted here.
http://www.element14.com/community/groups/internet-of-things/blog/2014/04/13/impact-vibration-and-ultrasound-sensing-with-pvdf-piezo-sensors#comment-33459

Vaisala have published much of the information you probably want to know.

Mark
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0 mcb1 over 11 years ago in reply to Robert Peter Oakes

Have a look at the links I posted here.
http://www.element14.com/community/groups/internet-of-things/blog/2014/04/13/impact-vibration-and-ultrasound-sensing-with-pvdf-piezo-sensors#comment-33459

Vaisala have published much of the information you probably want to know.

Mark
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