Hi,
I am using AFE4400 in one of my project. My intention is to calculate SPO2 and HR. I am wondering how to use those ADC data and formulate them to extract the intended parameters(spo2 and HR)? Regards.
Nazrul
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Hi,
I am using AFE4400 in one of my project. My intention is to calculate SPO2 and HR. I am wondering how to use those ADC data and formulate them to extract the intended parameters(spo2 and HR)? Regards.
Nazrul
Nazrul,
1. Question 18 in our FAQ explains how to get HR. e2e.ti.com/.../369445
2. The AC and DC component can be found from the PPG signal on the GUI, which you use to calculate SPO2. Also, I have included this link to another e2e post that discusses how to calculate SPO2.
1. We have used RED and IR, the purpose of the other data is to give the LED- LED ambient data. Sometime there is a large amount of ambient light and this math can be useful to some users.
2. It depends on your application and if there is a need for it.
3. You may use that implementation. We have used the equation %SPO2=110-25R
Here is another app note that might be helpful. www.ti.com/.../slaa655.pdf