Try a search for the Invisible Pet Containment System.· This consists of a trasmitter that uses a long continous loop of wire as a transmitter.· The per wears a special collar with a reciver.· When the pet gets close, a tone sounds, if it gets too close, the pet gets a mild zap.· If the pet charges the wire, the reciever detects this and gives a more severe jolt.
I haven't tried this and no idea on prices, but you should be able to modify the recievers to interface to a robot.· For a smaller area, a resistor on the transmitter side should reduce the field strength for a smaller area.
A.C. fishing said...
Why buried? Do you have a Roomba? It will never cross those two sensors. Check out the technology here:
www.irobot.com
AC
Roomba's use IR to create a fence over door openings or point to point.· This would not work could around a yard or a circular or an odd shape room.· Roomba uses the walls to bounce of off to navigate around.· It would be very interesting if someone could come up with to hack into the dog collar.· There are some huge possibilities with this.
Hi, have you also looket at www.mowbot.co.uk or http://www.mowbot.org·they are totally different people doing the same thing and they both have mastered the Hall effect sensor and created a wire rerimiter fence. the 1st is commercially available and the second is a home brew. ·
i'm wondering if any one has found a circuit to detect a buried wire to keep a robot inside a desinated area
Comments
http://www.parallax.com/html_pages/resources/custapps/app_robocut.asp
http://www.robotshop.se/micro/robocut_us.html
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Chris Savage
Parallax Tech Support
csavage@parallax.com
I haven't tried this and no idea on prices, but you should be able to modify the recievers to interface to a robot.· For a smaller area, a resistor on the transmitter side should reduce the field strength for a smaller area.
I hope this helped!
www.irobot.com
AC
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Tim
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