Omnidirectional Distance Sensor
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Just wondering, say you got two robots randomly placed in a room
with different 3D position (x,y,z), is there any way to find the
distance between them accurately? Like, is there any way to build
an omnidirectional distance sensor, since it is not just a plane
(x,y,z instead of x,y).
Hope you can understand me.
with different 3D position (x,y,z), is there any way to find the
distance between them accurately? Like, is there any way to build
an omnidirectional distance sensor, since it is not just a plane
(x,y,z instead of x,y).
Hope you can understand me.
Comments
>Just wondering, say you got two robots randomly placed in a room
>with different 3D position (x,y,z), is there any way to find the
>distance between them accurately? Like, is there any way to build
>an omnidirectional distance sensor, since it is not just a plane
>(x,y,z instead of x,y).
>
>Hope you can understand me.
A Z direction would only be required if altitude or height were involved. With
just two variables you can define the locations of two different objects in a 2D
space. What you probably want to do is to find the position of each one
individually, in relation to a third point. Find the distances from each object
to that third point and then use trigonometry or the Pythagorean Theorem to find
the remaining distances.
I hope that's what you're trying to do.
Regards,
Bruce Bates
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You'll have to find the offsets for each one when at the same height and
include that in your program (there's also some drift with temp).
I believe 0.1mB is about 1foot (check the net for calculations). Be sur
eyou have some good resolution in the sensor and the sensore measurement.
Just an idea.
Original Message
From: "Bruce Bates" <bvbates@u...>
To: <basicstamps@yahoogroups.com>
Sent: Thursday, March 25, 2004 12:45 AM
Subject: Re: [noparse][[/noparse]basicstamps] Omnidirectional Distance Sensor
> At 05:26 AM 3/25/04 +0000, rich2kchan wrote:
>
> >Just wondering, say you got two robots randomly placed in a room
> >with different 3D position (x,y,z), is there any way to find the
> >distance between them accurately? Like, is there any way to build
> >an omnidirectional distance sensor, since it is not just a plane
> >(x,y,z instead of x,y).
> >
> >Hope you can understand me.
>
> A Z direction would only be required if altitude or height were involved.
With just two variables you can define the locations of two different
objects in a 2D space. What you probably want to do is to find the position
of each one individually, in relation to a third point. Find the distances
from each object to that third point and then use trigonometry or the
Pythagorean Theorem to find the remaining distances.
>
> I hope that's what you're trying to do.
>
> Regards,
>
> Bruce Bates
>
>
>
>
>
> >To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> >from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
> >
> >Yahoo! Groups Links
> >
> >
> >
> >
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
> Yahoo! Groups Links
>
>
>
>
>
area, which each robot uses to trigger a chirp. Then listen for how long it
takes to hear the chirp from the other robot. Just like counting the seconds
for thunder to reach you from a lightning hit, you can use sound speed of
1132 feet/sec at STP, which is about 1.13 foot distance per millisecond of
delay or .883 milliseconds delay per foot of distance, depending on how you
look at it.
Mike Sokol
mike@f...
www.fitsandstarts.com
" One should not increase, beyond what is necessary,
the number of entities required to explain anything"...
-William of Occam-
Original Message
From: "rich2kchan" <rich2kchan@y...>
To: <basicstamps@yahoogroups.com>
Sent: Thursday, March 25, 2004 12:26 AM
Subject: [noparse][[/noparse]basicstamps] Omnidirectional Distance Sensor
>
> Just wondering, say you got two robots randomly placed in a room
> with different 3D position (x,y,z), is there any way to find the
> distance between them accurately? Like, is there any way to build
> an omnidirectional distance sensor, since it is not just a plane
> (x,y,z instead of x,y).
>
> Hope you can understand me.
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
> Yahoo! Groups Links
>
>
>
>
>
>
sensor.
John Baker
http://www.geocities.com/johnsrobotics/
rich2kchan <rich2kchan@y...> wrote:
Just wondering, say you got two robots randomly placed in a room
with different 3D position (x,y,z), is there any way to find the
distance between them accurately? Like, is there any way to build
an omnidirectional distance sensor, since it is not just a plane
(x,y,z instead of x,y).
Hope you can understand me.
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject and Body of
the message will be ignored.
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