Anemometer Circuit

[yeild]

Does anybody have good anemometer circuit that would work with a 8051 microcontroller. I would like to read in the measurement from the anemometer to the 8051 and then display the information onto a LCD display.

 

[hentai]

Hi I remember seing a nice circuit in a magazine using an optocoupler (CYN37 i think) and a comparator for level conversion. the blades of the anemometer were coupled with a little blade that passed through the optocoupler when they spined. So u need a counter and some math to get the actual wind speed. I'll search for the magasine mb and scan it these days.

 

[yeild]

Thanks hentai

 

[kamdy]

The attached file contain a schematic diagram of a very good anemometer it is from EDN magazine . It could be easily interfaced to 8051 microcontroller

 

[3v0]

The attached file contain a schematic diagram of a very good anemometer it is from EDN magazine . It could be easily interfaced to 8051 microcontroller

The article is for an variation of the hot wire air flow sensor. If it is like similar ones I have seen it will not measure the speeds required by an anemometer. More useful to sense the air speed in a HVAC.

A non-mechanical anemometer is better done with sound.
The circuit cellar had an online article on building one



This is based on the Scenix SX28/20 microcontroller. You can adapt the design to work with any microprocessor that is fast enough to get the job done.

EDIT: On closer inspection this system uses 3 SX28 MPUs and another SBC to gather info from them. Might be more then you are looking for.

If all you want to do is count pulses from a mechanical unit try looking at the material online for the Easter Egg anemometer. You should find the interface info needed.

 

[Nigel Goodwin]

EPE did an ultrasonic anemometer a couple of years ago, it used a single PIC if I recall correctly?.

 

[3v0]

EPE did an ultrasonic anemometer a couple of years ago, it used a single PIC if I recall correctly?.

Maybe QUASAR PROJECT # 3168 - EPE WIND SPEED METER

Has code and schematic and you can buy a kit.

The EPE design has to be pointed into the wind. It has one transducer pair. Also seems to be limited to winds of about 50MPH.

After a big blow how fast the wind blew is always a topic of interest at morning coffee/doughnuts.

 

[RODALCO]

Anemometer

There was a great article in Silicon Chip magazine last year, re an anemometer built with a videorecorder motor used as tachogenerator to provide the pulses to drive a analogue or digital read out

If i find the magazine i see if i can copy the details of it for this forum.

 

[mehlo]

Hello Guys
I am designing an ultrasonic anemometer that measures wind speed and direction. I am using four 40kHz transducers and PIC18F452 to calculate the wind speed and direction. Now I am struggling to amplify the received signal and converting them into digital form. Please help me with ideas good friends. I only have two months remaining to finish the project.

Thanks
Vuyani