3 ms·
The ones that use the iPhone's camera can get heart rate, but I have not seen one that can get blood oxygen level.
by borgchick 14y ago
The ones that use the iPhone's camera can get heart rate, but I have not seen one that can get blood oxygen level.
- pablosanchez 14y agoI don't think blood oxygen level can be measured using the phone's camera. Also, I read an article lately regarding the low level of accuracy regarding heart rate measured using an iPhone camera. I'll try to find it and post it.
- bathat 14y agoDepending on the spectrum of the phone camera's flash LED, you might be able to get away with just putting a diffraction grating in front of the camera. I recall, from reading a TI app note about pulse oximeters a while back, that these work by comparing the relative intensity of IR and a visible-red light transmitted through the finger (and that there was also some way to do it with reflected light). I wonder if there is a clever way to calibrate the grating without any extra hardware?