Looking to find two position sensors at fixed points to calculate average velocity. Should be pretty simple. Anyone have any recommendations for models of sensors??
Welcome. Oh, yes, there will be a veritable pile up of suggestions as soon as you tell us what you are measuring the velocity of.
Tell us about the fixed points, and what the position sensors will be doing at those points.
Trying to find the velocity of an impactor moments before impact using a homemade two-column drop tower. My fixed locations will be along the columns, so what I'm looking for is the time difference to trigger both sensors.
See reply to @anon57585045
Yours is a vague reply, sorry. How big is this compactor, what environment is it used in, etc. etc.? This is usually done with light beam interruption...
Also, if it's dropping, it's constantly accelerating at G. So a two point measurement will not be accurate without compensation. The final velocity is faster than the average velocity that you would measure by registering the passage past two points.
In formulating suggestions, people would wonder what would fit on these "columns" since you still haven't given any details of that. Still also no overall dimensions. No answer to my question about the installation environment.
Throw us a bone.
For something in free fall from rest, neglecting air resistance, the velocity at impact is v = sqrt(2gh), where h is the height above the impact point (in m) and g is 9.8 m/s^2.
Use a cam.
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