looking for some strain gauge amps, setting this up to work with the DL2.
any sources? or suggestions?
amps
The only portable, ready made, straing gauge amp that I've seen is made by Stack, though I'm sure the other (Pi, etc.) might also make them.
The circuit for amplification is a pretty basic op amp. TI makes a chip already to go - INA122 - about $7 at Digikey, probably another 5-10 for the rest of the stuff to make it work. INA111 will also work.
http://focus.ti.com/lit/ds/symlink/ina122.pdf
http://www.nakka-rocketry.net/strainlc.html
The circuit for amplification is a pretty basic op amp. TI makes a chip already to go - INA122 - about $7 at Digikey, probably another 5-10 for the rest of the stuff to make it work. INA111 will also work.
http://focus.ti.com/lit/ds/symlink/ina122.pdf
http://www.nakka-rocketry.net/strainlc.html
BMW 2000 M Coupe
yeah ive been playing with strain gauges for a few years now...
The main reason we are tying to get this goin is; the equipment we are using is stone age and post test analysis is a major pain.
also, if we can get some strain gagues to work with our DL2, then we can measure g-force, suspension travel, speed, wheel speed, and strain all at the same time.
we are testing off road vehicles for a (hopefully) well known company
what im guessing at is; it seems most apms require more then what the DL2 can provide (voltage wise, aux 5v max 100mA). and im wanting to have at least 8 channels for strain gauges.
i think i like these but i'm not positive that they will work:
http://www.lcmsystems.com/ICA_In-Cell_A ... _Amplifier
The main reason we are tying to get this goin is; the equipment we are using is stone age and post test analysis is a major pain.
also, if we can get some strain gagues to work with our DL2, then we can measure g-force, suspension travel, speed, wheel speed, and strain all at the same time.
we are testing off road vehicles for a (hopefully) well known company
what im guessing at is; it seems most apms require more then what the DL2 can provide (voltage wise, aux 5v max 100mA). and im wanting to have at least 8 channels for strain gauges.
i think i like these but i'm not positive that they will work:
http://www.lcmsystems.com/ICA_In-Cell_A ... _Amplifier
-
- Posts: 20
- Joined: Sun Oct 26, 2008 12:30 am
- Location: North America
DMKMM wrote:yeah ive been playing with strain gauges for a few years now...
The main reason we are tying to get this goin is; the equipment we are using is stone age and post test analysis is a major pain.
also, if we can get some strain gagues to work with our DL2, then we can measure g-force, suspension travel, speed, wheel speed, and strain all at the same time.
we are testing off road vehicles for a (hopefully) well known company
what im guessing at is; it seems most apms require more then what the DL2 can provide (voltage wise, aux 5v max 100mA). and im wanting to have at least 8 channels for strain gauges.
i think i like these but i'm not positive that they will work:
http://www.lcmsystems.com/ICA_In-Cell_A ... _Amplifier
Digikey sells regulated power supply chips for <$1 each. Just do a search on "voltage regulator" or "7805" for 5V, "7810" for 10V, etc. They're easy to set up. My regulated 5V source provides up to 1.5 Amps.
Return to “Sensor-related questions”
Who is online
Users browsing this forum: No registered users and 17 guests