Wanted: temp monitor

D

David Lesher

Guest
I'm seeking a multichannel temp. monitoring scheme.

A) Inexpensive

B) Multi-channel

C) Ethernet driven -- i.e. no local display

D) Long loops on sensors.

E) Inexpensive


The ideal would be oh BasicStamp or such based. It would use the
National LM35 $1.00 sensors, and the 'box' would accommodate 4-8 of
them. It might well be powered by PoE so you do not need to find an
outlet to deploy, just an Ethernet jack.

Suggestions?

--
A host is a host from coast to coast.................wb8foz@nrk.com
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433
 
On Wed, 17 Mar 2004 16:15:02 +0000 (UTC), the renowned David Lesher
<wb8foz@panix.com> wrote:

I'm seeking a multichannel temp. monitoring scheme.

A) Inexpensive

B) Multi-channel

C) Ethernet driven -- i.e. no local display

D) Long loops on sensors.

E) Inexpensive


The ideal would be oh BasicStamp or such based. It would use the
National LM35 $1.00 sensors, and the 'box' would accommodate 4-8 of
them. It might well be powered by PoE so you do not need to find an
outlet to deploy, just an Ethernet jack.

Suggestions?
Click to expand...
Your proposed project is 90%+ Ethernet communication/power and <5%
temperature measurement, with another little bit of signal
conditioning to allow the long loops. Try finding an SBC with a TCP
stack, maybe a tiny web server, and MAC/Phy already on there.

Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
 
Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> writes:


Your proposed project is 90%+ Ethernet communication/power and <5%
temperature measurement, with another little bit of signal
conditioning to allow the long loops. Try finding an SBC with a TCP
stack, maybe a tiny web server, and MAC/Phy already on there.
Click to expand...

Quite true. But you don't even need signal conditioning for the loops,
as National kindly points out a current loop scheme in their app. notes.

I'm just surprised nobody's done this already...

--
A host is a host from coast to coast.................wb8foz@nrk.com
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433
 
On Thu, 18 Mar 2004 15:13:20 +0000 (UTC), the renowned David Lesher
<wb8foz@panix.com> wrote:

Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> writes:


Your proposed project is 90%+ Ethernet communication/power and <5%
temperature measurement, with another little bit of signal
conditioning to allow the long loops. Try finding an SBC with a TCP
stack, maybe a tiny web server, and MAC/Phy already on there.


Quite true. But you don't even need signal conditioning for the loops,
as National kindly points out a current loop scheme in their app. notes.

I'm just surprised nobody's done this already...
Click to expand...
Is there a substantial market for it?

Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
 
Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> writes:


I'm just surprised nobody's done this already...

Is there a substantial market for it?
Click to expand...
Don't know. There's lots of temp. monitoring in general. This need
came out of ISP rack-mounted equipment. But I can see opethr applications
if it's inexpensive.



--
A host is a host from coast to coast.................wb8foz@nrk.com
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433
 
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