juanfhj
Junior Member level 1
I want to implement a heart rate monitor for sports activity based on the principle of LED-sensor sensing through soft tissue (example Optical Heart Rate Monitor : Low Cost USB DAQ). However, my experiments show that there's a huge component due to movement of the sensor while exercising, and that component is at about the same frequency (and in fact larger) than the infrared absorption signal. I think I could place an accelerometer to measure the frequency of the motion in order to reject that frequency component. What technique could I use to reject that frequency? I think that a generic low-pass filter wouldn't work because the two frequencies are close, however, the accelerometer would also supply phase information, which may be useful.
Thanks
Thanks