|
Actually you don’t need a bunch of control wires. It
is possible to run DC power and the video signal over the same cable. The
control signals run over another pair (RS-432) as digital signals received by a
small processor (such as a Parallax BASIC Stamp). It is even conceivable
to run the control signals with the video at another frequency. As Vance
noted, the slip ring for the cable reel is a major issue. They even have
ones that will handle fiber optic cable. The cable shear is a relatively
minor construction issue with a variety of solutions. R/Jay Respectfully, Jay K. Jeffries Andros Is., Bahamas If
everything seems under control, you're just not going fast enough. From:
owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of ShellyDalg@aol.com Hi Jay. Entanglement would be the main concern for sure. I've
often thought about this, and was wondering how we could make a break-away
connection for this application or other types of entanglement hazards. I've seen some mechanical arms with cable cutters, and that could
work. I think it was a Nuytco sub that had an array of tools attached to the
hull with magnets, such that the mechanical arm could reach out and change/add
a tool. I know that there are some commercial ROV's that have a cable cutter
available as an option. A small ROV with a camera and two motors would be pretty easy to
build. A docking "garage" some where on the sub, a means of recording
what is seen by the camera so you could steer it, and maybe a drop weight on
the ROV so if you cut it loose, you may be able to get it back. The control
cable would need a lot of wires, but all low voltage so the cable size
could be fairly small and easy to cut. As for a reel, that is the easy part. a small reel about the size
used for Marlin fishing connected to a reversible motor powered by either
electric, hydraulic, or even air. Frank D.
Gas prices getting you down?
Search AOL Autos for fuel-efficient used cars. |