I have the same problem
Hi
I am working with the polar OH1. The way I recorded the data is using the mqtt format and transferring to my computer using cloud. I see the same problem with the sampling rate. I used your experiences but the quality of signal is really weak! and lose informative information about the systole phase of the heart. 8 samples per cycle is less than Nyquist law.
the picture of the signal is in below:
I do appreciate it if let me know how many peaks you receive in each second? and how many points you have in each PPG cycle?
I set email with the technical part of the polar, no answer yet!
Best Regards
Amin
aminhm2002
commented
7 months ago
I have the same problem Hi I am working with the polar OH1. The way I recorded the data is using the mqtt format and transferring to my computer using cloud. I see the same problem with the sampling rate. I used your experiences but the quality of signal is really weak! and lose informative information about the systole phase of the heart. 8 samples per cycle is less than Nyquist law. the picture of the signal is in below:
I do appreciate it if let me know how many peaks you receive in each second? and how many points you have in each PPG cycle? I set email with the technical part of the polar, no answer yet! Best Regards Amin
https://github.com/polarofficial/polar-ble-sdk/issues/418