How Pulse Oximeters Work (2015)

#1

Post by zealotsm » Thu, Jul 16, 2020, 8:12 PM UTC

How Pulse Oximeters Work (2015)
howequipmentworks.com

Re: How Pulse Oximeters Work (2015)

#2

Post by progre » Thu, Jul 16, 2020, 8:37 PM UTC

Since the site is hugged to death, why not check out Technology Connections video instead: https://youtu.be/4pZZ5AEEmek

Re: How Pulse Oximeters Work (2015)

#3

Post by dvt » Thu, Jul 16, 2020, 8:42 PM UTC

Went to a party last weekend where the host used a pulse oximeter (and thermometer) on everyone. Blood O2 level is apparently a leading indicator of COVID-19. Pretty cool stuff. The inner workings of it are actually quite simple as well, pretty amazing that it works as well as it does.

Re: How Pulse Oximeters Work (2015)

#4

Post by el_don_almighty » Thu, Jul 16, 2020, 8:44 PM UTC

HN is the new /.

Re: How Pulse Oximeters Work (2015)

#5

Post by popotamonga » Thu, Jul 16, 2020, 8:48 PM UTC

dvt wrote: post #3

Went to a party last weekend where the host used a pulse oximeter (and thermometer) on everyone. Blood O2 level is apparently a leading indicator of COVID-19. Pretty cool stuff. The inner workings of it are actually quite simple as well, pretty amazing that it works as well as it does.

I discovered i have a problem with one. Every one else who tried it had 98-100 all the time. I had < 94 no mater what

Re: How Pulse Oximeters Work (2015)

#6

Post by monty5811 » Thu, Jul 16, 2020, 8:53 PM UTC

dvt wrote: post #3

Went to a party last weekend where the host used a pulse oximeter (and thermometer) on everyone. Blood O2 level is apparently a leading indicator of COVID-19. Pretty cool stuff. The inner workings of it are actually quite simple as well, pretty amazing that it works as well as it does.

Pulse oximeters are not all that simple. The general idea is easy enough to get across and it's possible to build a fairly simple one that will work some of the time. But the top end, highly reliable ones that work well at low sats are pretty complicated things.

Re: How Pulse Oximeters Work (2015)

#7

Post by brain5ide » Thu, Jul 16, 2020, 8:54 PM UTC

popotamonga wrote: post #5

dvt wrote: post #3

Went to a party last weekend where the host used a pulse oximeter (and thermometer) on everyone. Blood O2 level is apparently a leading indicator of COVID-19. Pretty cool stuff. The inner workings of it are actually quite simple as well, pretty amazing that it works as well as it does.

I discovered i have a problem with one. Every one else who tried it had 98-100 all the time. I had < 94 no mater what

What problem if you don't mind? I have a Garmin that says I'm 94ish, though it's accuracy is questionable. Haven't had a chance to test with a proper one.