|
Re: Ultrasonic Sesnor Accuracy
Quote:
Originally Posted by SoyStuff
Okay then. Pardon my ignorance, but how exactly would one go about calibrating the ultrasonic sensor? Is there a specific process that we are supposed to follow, or do you just mean that we should get some data and work out a formula, which is what we've done.
|
We took measurements every 6 inches. We wrote on a piece of paper the actual distance (measured via tape measure) and the voltage reading from LabVIEW. Put everything in an Excel spreadsheet, then use y = mx+b to find the best fit "m" (i.e. slope or scale factor) to make the data work best.
__________________
-
An ounce of perception is worth a pound of obscure.
|