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Guys,
Attached is the picture for the parking aid . My camera does not have good resolution, but you can see at the top, the 4 transformers to drive the 4 transducers, aCD4052 on the left and NE5532 (8 pins) on the bottom , that handles the analog signal . Beside it you can see 2 diodes that...
FvM,
Thanks for clarification . I found that 25 usecs = 8.5 mm distance (for 340 m/s air speed)and you are right this irrelevant for the parking sensor .
So the wind meter that i am triying to implement is another "animal" . I need 2 usec precision
VsmGuy,
I bought an inexpensive sensor...
FvM,
Regarding the trasducers not sure about your comment . These came with the parking sensor kit, so I am assuming should be good.
The circuit already has a rectifier and again this circuit was working as a parking aid.
My concern now is if my app (the anemometer) requires same precision as a...
Irengineer,
I still working on it and seriously considering a cup anemometer......
I bought a parking sensor to get the transducers and used the analog part of it , mainly for driving the transducers and the switching part with the 4052 IC .
It is interesting to note that the parking circuit is...
I think you are pushing to the limit.....
I did use PIC18F252 with a Goertzel algorithm (kind of simplified and fast version of FFT because you specified which frequencies you are interest in) for 64 samples and had an LED matrix display that was very hard (because of speed)to have updated...
Ultrasonic Anemometer
DSP experts,
I am designing (or trying...) an ultrasonic anemometer and need some help to identify the received signal .
Basically I meassure the TOF , so send a train of 8 40Khz pulses in one end and the received signal is compared against a threshold . The issue is that...
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