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hi
i'm working on a mobile robot project..in this project the robot should work in an indoor area of 100 m2.so i will have to define a coordination system (or what it is called) to let the robot know where it is and where to go.
so what do you recommend me to use....exp(cameras or ultrasonic sensors..... ) (i suppose that the gps wont be accurat)
note: the cost of this system is an issue
sorry for my bad english
thnx
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This really belongs in Robotics, where you will learn all about the difficulties involved in what you are trying to do. Or, you would if you read anything there, first.
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hi
i'm working on a mobile robot project..in this project the robot should work in an indoor area of 100 m2.so i will have to define a coordination system (or what it is called) to let the robot know where it is and where to go.
so what do you recommend me to use....exp(cameras or ultrasonic sensors..... ) (i suppose that the gps wont be accurat)
note: the cost of this system is an issue
sorry for my bad english
thnx
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I would go with something that will not reflect and allow for valid reception from what may appear as more than 1 source.
GPS will not work well (at all?) indoors - need to see the sky to receive a signal from a satellite.
Will the robot have clear view of 2 corners of the area at all times? You could have 2 infrared transmitters with 2 frequencies.
The robot would have an IR receiver (or 2) that could measure the angle between the 2 and compute its location.
If you can't eliminate reflection, then maybe implement scanning & just measure the angle between the 2 strongest transmitters.
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
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yes the workspace of the robot is a square room of (10x10m) so i can install two transmitter .... but how am i going to be able to mesure the angle between them?? smiley-red smiley-red
should i install the receiver on a servo motor??
i know that i'm asking alot but....can you give links to similar project smiley
thanks
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I don't think you connected the grounds, Dave.
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Topics merged.

@OP : DO NOT CROSS-POST.

If you posted in the wrong section, ask a moderator to move it for you.
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Yes, find one, use a servo with microstep control to find the other.
I don't know anyone doing it like that, but it makes sense to me mathematically.
You couldn't make a determination if you were on straight line in between them, and there would be a 50/50 shot of being in one half or the other.
So ideally three would make more sense so you could resolve which half you were on.
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

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Quote
should i install the receiver on a servo motor??

That would be what I would try. You could get one of the below IR receiver modules at RS for the IR detector and use a TV remote from the dollartree store for the test beacon. Put the detector in a black non reflective shield tube and point it at the tv remote to see if the detector can detect the remote.

http://www.radioshack.com/product/index.jsp?productId=2049727#
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You might get some ideas from Borenstein's book "Where Am I?", downloadable online
from his website. Chap 6, Active Beacon Systems.

http://www-personal.umich.edu/~johannb/
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Excellent - Chapter 6, discusses various ways to determine location in 10meterx10meter room.
http://www-personal.umich.edu/~johannb/Papers/pos96rep.pdf
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
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thanks for all smiley smiley smiley smiley
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