Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: zamboniman60 on February 25, 2006, 12:03:40 AM

Title: Underwater IR
Post by: zamboniman60 on February 25, 2006, 12:03:40 AM
IR won't work underwater...
Title: Re: Underwater IR
Post by: Admin on February 25, 2006, 08:59:28 AM
Actually IR DOES work through water . . . and glass too.
I tested it out last week on my robot fish inside a fish tank. I placed my IR rangefinder outside of the fish tank, and it can detect the distance of my robot fish from the edge of the glass.

I have not yet tested accuracy loss or for other weird effects yet. Will get to that later. I would expect some kind of refocusing, meaning I would need a special calibration and can expect a lower accuracy.

The problem with any sensor underwater however is that murkiness and bubbles in the water will reduce sensor quality - not even the human eye could avoid that issue.