Subject:
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Re: NXT Ultrasonic sensor
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 6 Sep 2006 19:18:25 GMT
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Original-From:
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Juergen Stuber <JUERGEN@JSTUBER.NETantispam>
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Viewed:
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2317 times
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Hi,
"Brian Davis" <brdavis@iusb.edu> writes:
> In lugnet.robotics, Ben Ventura wrote:
>
> > How long does it take to for it to sample each
> > distance reading?
>
> IMS, it takes about 12 ms per "ping" from the sensor.
since sound travels at about 333 m/s (depending on temperature and pressure),
a meter takes 3 milliseconds.
At the maximum range of 2.5 meters,
times two that would be 15 milliseconds per reading.
Cheers
Jürgen
--
Jürgen Stuber <juergen@jstuber.net>
http://www.jstuber.net/
gnupg key fingerprint = 2767 CA3C 5680 58BA 9A91 23D9 BED6 9A7A AF9E 68B4
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Message has 2 Replies: ![](/news/x.gif) | | Re: NXT Ultrasonic sensor
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| (...) It never ceases to amaze me how astoundingly slow sound is compared to the speed of a computer. It's one of those rare cases when your view of the universe around you shifts into a completely new perspective. (18 years ago, 6-Sep-06, to lugnet.robotics)
| ![](/news/x.gif) | | RE: NXT Ultrasonic sensor / Retreiving 8 OBjects at Once
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| (...) Unfortunately, you cannot operate a ultrasound sensor at this rate. I think it is much slower than this. Before you start a new "ping" you have to ensure that all the echoes from distant devices on first ping have been received before starting (...) (18 years ago, 6-Sep-06, to lugnet.robotics)
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Message is in Reply To:
![](/news/x.gif) | | Re: NXT Ultrasonic sensor
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| (...) Well, sort of. First, what the US sensor returns is the range of the nearest sound-reflecting surface: but it's not a pencil thin laser beam of sound, so the same object might be detected at slightly different angles, making the object apeear (...) (18 years ago, 6-Sep-06, to lugnet.robotics)
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13 Messages in This Thread: ![NXT Ultrasonic sensor -Ben Ventura (6-Sep-06 to lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![Re: NXT Ultrasonic sensor -Brian Davis (6-Sep-06 to lugnet.robotics)](/news/x.gif) ![](/news/246.gif) ![Re: NXT Ultrasonic sensor -Ben Ventura (6-Sep-06 to lugnet.robotics)](/news/x.gif)
![](/news/x.gif) ![](/news/x.gif) ![](/news/268.gif) ![Re: NXT Ultrasonic sensor -Ben Ventura (6-Sep-06 to lugnet.robotics)](/news/x.gif)
![](/news/x.gif) ![](/news/x.gif) ![](/news/68.gif) ![You are here](/news/here.gif) ![](/news/246.gif) ![Re: NXT Ultrasonic sensor -lego-robotics@crynwr.com (steve) (6-Sep-06 to lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![Re: NXT Ultrasonic sensor -Ben Ventura (6-Sep-06 to lugnet.robotics)](/news/x.gif)
![](/news/x.gif) ![](/news/x.gif) ![](/news/68.gif) ![RE: NXT Ultrasonic sensor / Retreiving 8 OBjects at Once -Dick Swan (6-Sep-06 to lugnet.robotics)](/news/x.gif) ![](/news/246.gif) ![Re: NXT Ultrasonic sensor / Retreiving 8 OBjects at Once -Ben Ventura (6-Sep-06 to lugnet.robotics)](/news/x.gif)
![](/news/x.gif) ![](/news/x.gif) ![](/news/68.gif) ![Re: NXT Ultrasonic sensor / Retreiving 8 OBjects at Once -John Hansen (7-Sep-06 to lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![Re: NXT Ultrasonic sensor / Retreiving 8 OBjects at Once -lego-robotics@crynwr.com (bk227865) (13-Oct-06 to lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![RE: NXT Ultrasonic sensor / Retreiving 8 OBjects at Once -Dick Swan (13-Oct-06 to lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![RE: NXT Ultrasonic sensor / Retreiving 8 OBjects at Once -lego-robotics@crynwr.com (bk227865) (13-Oct-06 to lugnet.robotics)](/news/x.gif)
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