Simple Data Logger Design Required ~ 4ch, low power

[[email protected]]

Evening all,

I am looking for an engineer who can produce a *simple* data logging
circuit for me. I can give you more details on request, just looking
to see if someone is interested in a little paying project? The quick
specification is....

Four universal channels
8bit or better
Channels to accept 0-5V and Thermistors (or some other temperature
sensors)
5V Excitation which turns on and off before taking a reading allowing a
quick "warm up" time for powering transducers.
Storage of 4000+ readings per channel or better
Time Stamp along with data readings
RS232 Interface
Programmable logging rates from <5secs to >2hours
A digital channel for pulse counting would also be a nice addition
Battery power (lithium)

Production cost is a major issue, isn't it always!, I need to keep this
as low as possible!

Thank you for your time looking at this post. You can reply here or on
my email below...

Andreas Johnson ~ Monitor Solutions MD
monitorsolutions at yahoo dot com

 

[Rene Tschaggelar]

Evening all,

I am looking for an engineer who can produce a *simple* data logging
circuit for me. I can give you more details on request, just looking
to see if someone is interested in a little paying project? The quick
specification is....

Four universal channels
8bit or better
Channels to accept 0-5V and Thermistors (or some other temperature
sensors)
5V Excitation which turns on and off before taking a reading allowing a
quick "warm up" time for powering transducers.
Storage of 4000+ readings per channel or better
Time Stamp along with data readings
RS232 Interface
Programmable logging rates from <5secs to >2hours
A digital channel for pulse counting would also be a nice addition
Battery power (lithium)

Production cost is a major issue, isn't it always!, I need to keep this
as low as possible!

Almost.
The excitation is only 2.5V, but 3 channels.
And yes, the sensor is unpowered while idle.
http://www.ibrtses.com/products/bridgemeasurement.html

Rene

 

[Rene Tschaggelar]

Evening all,

I am looking for an engineer who can produce a *simple* data logging
circuit for me. I can give you more details on request, just looking
to see if someone is interested in a little paying project? The quick
specification is....

Four universal channels
8bit or better
Channels to accept 0-5V and Thermistors (or some other temperature
sensors)
5V Excitation which turns on and off before taking a reading allowing a
quick "warm up" time for powering transducers.
Storage of 4000+ readings per channel or better
Time Stamp along with data readings
RS232 Interface
Programmable logging rates from <5secs to >2hours
A digital channel for pulse counting would also be a nice addition
Battery power (lithium)

Production cost is a major issue, isn't it always!, I need to keep this
as low as possible!

Almost.
The excitation is only 2.5V, but 3 channels.
And yes, the sensor is unpowered while idle.
http://www.ibrtses.com/products/bridgemeasurement.html

Rene

 

[William at MyBlueRoom]

I can do it for you. How many do you want to build, what type of
lithium batteries are you using, what sort of enclosure would you like?
I've designed some medication delivery systems for Baxter (the Autros
system)

email me at [email protected]

Bill

See some of my projects at www.myblueroom.com