Searching \ for '[OT] Ultrasonic ranging system' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: techref.massmind.org/techref/io/sensors.htm?key=rang
Search entire site for: 'Ultrasonic ranging system'.

Exact match. Not showing close matches.
PICList Thread
'[OT] Ultrasonic ranging system'
1998\01\23@074950 by Anders Eliasson

flavicon
face
Hi,

I'm building a PIC-based ranging system.
I need to measure the distance between moving vehicles and have some
problems doing this.

The distance can vary from 0 to say 150-200 meters (more or less)
I've seen some SONAR-designs doing this, but not in these distances...
My idea is to use one (probably several) 40 kHz transmitter(s)

Oh yes, the field must be quite narrow (to not detect cars in other lanes).
Perhaps LASER would be a better choice?

Does anyone have experiences in this field?

Cheers

/Anders

1998\01\23@082000 by Sten Dahlgren

flavicon
face
On Fri, 23 Jan 1998, Anders Eliasson wrote:

> Hi,
>
> I'm building a PIC-based ranging system.
> I need to measure the distance between moving vehicles and have some
> problems doing this.
>
> The distance can vary from 0 to say 150-200 meters (more or less)
> I've seen some SONAR-designs doing this, but not in these distances...
> My idea is to use one (probably several) 40 kHz transmitter(s)
>
> Oh yes, the field must be quite narrow (to not detect cars in other lanes).
> Perhaps LASER would be a better choice?
>
Probably not a good idea

> Does anyone have experiences in this field?
>
check http://www.celsiustech.se/products

choose sensors and then intelligent car radar

> Cheers
>
> /Anders
>

/Sten

---
Sten Dahlgren  CelsiusTech Systems   ! "I'd rather have 39 Hp under my arm
S-175 88 Jaerfaella      Sweden      ! than one under my backside"
spam_OUTsedaTakeThisOuTspamcelsiustech.se +46-8 58084430   ! join your nearest karting club now !!

1998\01\23@111035 by Mike Keitz

picon face
On Fri, 23 Jan 1998 07:49:50 -0500 Anders Eliasson
<.....anders.eliassonKILLspamspam@spam@INTERTEX.SE> writes:
>Hi,
>
>I'm building a PIC-based ranging system.
>I need to measure the distance between moving vehicles and have some
>problems doing this.

>
>Does anyone have experiences in this field?

This is one of the topics that the government can be convinced to throw a
lot of money at.  Consequently, there is a huge amount of currently
active research in this field.  Look for "IVHS" (Intelligent
Vehichle-Highway System), etc.   The problem is (as you would imagine)
not simple.

More... (looser matching)
- Last day of these posts
- In 1998 , 1999 only
- Today
- New search...