Invisible fence

Thread Starter

Azkart

Joined Jan 21, 2009
4
Hi.
I'm currently working on a robot that needs to stay inside a small area, the area is limited by a invisible fence which frequency is of 10 Khz, the problem that I'm facing is that adding a coil on every side of the robot in order to detect the fence will take a lot of space (if you count the space needed for each one of the circuits for each coil). The frequency is generated from an underground cable.

Thanks for your time.
 

hgmjr

Joined Jan 28, 2005
9,027
Maybe it would be practical to wind a coil around the perimeter of the robot. It would then be one big coil. You might then need to use a 10KHz bandpass filter to make the pickup coil and detection circuitry sensitive to 10KHz only.

hgmjr
 

Thread Starter

Azkart

Joined Jan 21, 2009
4
Thanks, I will give it a try, although I don't know how to deal with changing the result to a digital signal so the microcontroller can read it.
 

italo

Joined Nov 20, 2005
205
DO YOU KNOW THAT THE TIME IS ONLY .0001MS If it gets too fast that might not stop it. try infrared invisible until you cross it easy to inplement just one LED and some mirrors make it any shapeyou like.
 
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