AFE4403 measurement issue

Patrick Chen

Other Parts Discussed in Thread: AFE4403

Hello,

Please see the below AFE4403 measurement results while motion status. Blue and Green line are different watch and red line are bracelet all used AFE4403. Vertical axis means calculated heart rate pulse (150 points/3sec). Customer point out waveform much varied from high heart pulse to low heart pulse and it is difficult to identify heart rate signal of user.

Do we have any comments for below issue to improve this situation to customer to identify good signal from high *** to low pulse while motion? Thank you.

Parameters of AFE4403 as below:

ADC raw data range: 14000-16000

Rf: 50K

Cf: 250p

Gain: 6dB

Patrick

over 9 years ago

0 Amy Schnoor over 9 years ago

TI__Mastermind 18275 points

Patrick,

We have received your post and hope to have a response back to you soon.

0 Patrick Chen over 9 years ago in reply to Amy Schnoor

Mastermind 8875 points

Hello Amy,

Has any update for question? Thanks.

BR
Patrick

0 Amy Schnoor over 9 years ago in reply to Patrick Chen

TI__Mastermind 18275 points

Patrick,

Sorry for the delay. Unfortunately, this is a problem that a lot of our customers run into. They end up having to write some motion cancellation algorithm in order to get a better signal.

Can you get a good HR signal at rest?

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AFE4403 measurement issue