positive ramp detection

Archiver · 2003-03-22 19:28

Hallo,
I have already a load cell based weigh scale using BS2 and I want to build a
checkweigher.
In this application a package entering the weigh station conveyor,so how can
a positive entry ramp signals be detected so that as the ramp signal levels
is off,the package is fully on the weigh station conveyor and then the
weight can be determined.Any help would be appreciated.

Thank You
Mohamed Refky

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Archiver · 2003-03-22 19:36

Mohamed,

How about two IR sensors at the far edges of the weigh station. After the
first beam is broken, the conveyer continues until it is no longer broken.
If it breaks the second beam and the first is intact, then it needs to back
up. If both beams are broken, the package is too large and can set off a
warning device.

Jonathan

www.madlabs.info

Original Message

From: "Mohamed REFKY" <refky@h...>
To: <basicstamps@yahoogroups.com>
Sent: Saturday, March 22, 2003 11:28 AM
Subject: [noparse][[/noparse]basicstamps] positive ramp detection

> Hallo,
> I have already a load cell based weigh scale using BS2 and I want to build
a
> checkweigher.
> In this application a package entering the weigh station conveyor,so how
can
> a positive entry ramp signals be detected so that as the ramp signal
levels
> is off,the package is fully on the weigh station conveyor and then the
> weight can be determined.Any help would be appreciated.
>
> Thank You
> Mohamed Refky
>
>
>
>
>
>
>
> _________________________________________________________________
> MSN 8 with e-mail virus protection service: 2 months FREE*
> http://join.msn.com/?page=features/virus
>
>
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> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
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>
>
>
>

Archiver · 2003-03-23 00:54

Possibley 2 sensors on each end.

the signal to load starts the part onto the scale until the first
remote beam is broken, then stops. if the two inner beams are
broken, fine, if either of the two outter beams are broken, then the
part is too long or not centered, either way, a fault.

Dave

--- In basicstamps@yahoogroups.com, "Jonathan Peakall"
<jpeakall@m...> wrote:
> Mohamed,
>
> How about two IR sensors at the far edges of the weigh station.
After the
> first beam is broken, the conveyer continues until it is no longer
broken.
> If it breaks the second beam and the first is intact, then it needs
to back
> up. If both beams are broken, the package is too large and can set
off a
> warning device.
>
> Jonathan
>
> www.madlabs.info
>
>

Original Message

> From: "Mohamed REFKY" <refky@h...>
> To: <basicstamps@yahoogroups.com>
> Sent: Saturday, March 22, 2003 11:28 AM
> Subject: [noparse][[/noparse]basicstamps] positive ramp detection
>
>
> > Hallo,
> > I have already a load cell based weigh scale using BS2 and I want
to build
> a
> > checkweigher.
> > In this application a package entering the weigh station
conveyor,so how
> can
> > a positive entry ramp signals be detected so that as the ramp
signal
> levels
> > is off,the package is fully on the weigh station conveyor and
then the
> > weight can be determined.Any help would be appreciated.
> >
> > Thank You
> > Mohamed Refky
> >
> >
> >
> >
> >
> >
> >
> > _________________________________________________________________
> > MSN 8 with e-mail virus protection service: 2 months FREE*
> > http://join.msn.com/?page=features/virus
> >
> >
> > 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.
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >
> >

Archiver · 2003-03-25 17:39

Jonathan,
I did not want to do this with external devices,I want to write a code that
detects the increasing in the weight readings which already the BS2 gets
from the load cell A/D and check when the weight stops increasing.

From: "Jonathan Peakall" <jpeakall@m...>
Date: Sat Mar 22, 2003 7:36 pm
Subject: Re: [noparse][[/noparse]basicstamps] positive ramp detection

Mohamed,

How about two IR sensors at the far edges of the weigh station. After the
first beam is broken, the conveyer continues until it is no longer broken.
If it breaks the second beam and the first is intact, then it needs to back
up. If both beams are broken, the package is too large and can set off a
warning device.

Jonathan

www.madlabs.info

>From: "Mohamed REFKY" <refky@h...>
>Reply-To: basicstamps@yahoogroups.com
>To: basicstamps@yahoogroups.com
>Subject: [noparse][[/noparse]basicstamps] positive ramp detection
>Date: Sat, 22 Mar 2003 21:28:12 +0200
>
>Hallo,
>I have already a load cell based weigh scale using BS2 and I want to build
>a
>checkweigher.
>In this application a package entering the weigh station conveyor,so how
>can
>a positive entry ramp signals be detected so that as the ramp signal levels
>is off,the package is fully on the weigh station conveyor and then the
>weight can be determined.Any help would be appreciated.
>
>Thank You
>Mohamed Refky
>
>
>
>
>
>
>
>_________________________________________________________________
>MSN 8 with e-mail virus protection service: 2 months FREE*
>http://join.msn.com/?page=features/virus
>
>
>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.
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>

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positive ramp detection

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