Electronics > Projects, Designs, and Technical Stuff
ECG to standard oscilloscope questions
(1/1)
myster1086:
So I recently had a friend come in possession of a full ct machine, got to help tear down in exchange I could pick thru the electrical parts I liked. Needless to say I grabbed up the power supply, all the transformers, and the patient monitor.
Its an ivy biomedical systems 101 patient monitor. It uses a small crt to display heart rate. Looks just like an oscilloscope.
What I'm wanting, if possible, instead of just heart rate, can it be made to show any ac electrical signal? What would need to be done?
Rerouter:
It should have an isolated input for each of the 2 polar channels, if you feed a small voltage (e.g. 200mV max) you should see it respond on screen, though you may not be able to increase the sweep rate without more significant modifications.
myster1086:
That's the thing right, so it picks up sound as well, like a piezo. I clipped onto a bare piece of metal, one clip had its own, it displayed the taps bumps and coughs. Its 3 probe. Black red and white. I read somewhere about filters, bit this seems above my pay grade, as I cant find anything on it
DaJMasta:
Isolation is important for any biological use, but not so critical for other applications.  I think you should be able to see a lot of other things with it, given they're within the fairly low bandwidth, but the frontend will be pretty high impedance and you'll only have one (low) range, I expect.  Measurement is done on a differential signal, so you need at least two, but if it uses all three channels to average and create the difference signal for the three, it may need all three in use to read something useful - not sure how these things are typically setup.  You could also have two signal and a common, effectively.
Navigation
Message Index
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod