Alt-BEAM Archive
Message #03419
To: westy civic83@execulink.com
From: Bob Shannon bshannon@tiac.net
Date: Thu, 20 May 1999 08:43:51 -0700
Subject: [alt-beam] Re: ir obstacle avoidance in water
westy wrote:
>
> Will a modulated ir obstacle avoidance system work under water? The setup
> I have built is electrically the same as the ir obstacle avoidance kit sold
> by mondotronics robot store. I beleive it works with 38 or 40khz modulated
> ir light. For this setup to be usefull I need to get at least a foot of
> range.
In clear water, it should work fairly well, but in real-world (natural)
water, the suspended particles will give you false detections long
before the IR is absorbed by the water itself.
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