Subject:
|
Re: AW: Navigation by sound?
|
Newsgroups:
|
lugnet.robotics
|
Date:
|
Thu, 30 Nov 2000 17:16:48 GMT
|
Original-From:
|
Marco C. <marco@soporcel.pt=SayNoToSpam=>
|
Viewed:
|
771 times
|
| |
|
|
Hi :)
I was going to write about the need for the minimum of 3 point for a
perfect TRIangulation etc.. but then, it just ocurred to me: One can use
this err... "BIangulation" (eheh) technic (in theory... I just thought of
this right now)) to direct a bot to a target.
In Fig.1 I think it's possible to determine how far the bot is from the
predetermined target and to which side it is, left or right. The only thing
that's not possible to determine is from where the bot is coming: front or
back of the target.
Fig.1____________________________________________
(use a fixed font to better see this ascii "art")
FRONT-->
mic Left(.( ( ( ( ( (0 [bot beeping at point A]
. (
]target[ .[@point B] (
. (
mic Right(. (
<--BACK
TMHO :)
____________________
Marco C. aka McViper
At 15:54 30-11-2000 +0100, you wrote:
> Hi,
> just passing by coming from sci.geo.satellite-nav it occured to me that even
> under best circumstances and assuming the robot to be on a plane area two
> microphones will not provide the position, or better said, it still might be
> on either one or the other of the maximum two intersections of two circles.
> Christof R. Mayer
>
> -----Original Message -----
> Von: news-gateway@lugnet.com [mailto:news-gateway@lugnet.com]Im Auftrag von
> Juergen Stuber
> Gesendet: Donnerstag, 30. November 2000 14:20
> An: lego-robotics@crynwr.com
> Betreff: Navigation by sound?
>
> Hi,
>
> has anybody tried a setup like this:
>
> - The tower sends a message to the RCX.
> - The RCX beeps.
> - The beep sound is captured by two microphones on two neighbouring corners
> of the navigation space.
> - Their signal is fed into a stereo soundcard.
> - The computer finds the begin of the signals, computes the delays
> and from them the position.
> - The computer sends the position to the RCX.
> - Repeat.
>
> Jürgen
|
|
Message is in Reply To:
 | | Navigation by sound?
|
| Hi, has anybody tried a setup like this: - The tower sends a message to the RCX. - The RCX beeps. - The beep sound is captured by two microphones on two neighbouring corners of the navigation space. - Their signal is fed into a stereo soundcard. - (...) (24 years ago, 30-Nov-00, to lugnet.robotics)
|
3 Messages in This Thread:
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
