WEEK 11 & 12


OBJECTIVEProduce result for SpO2 and heart beat reading 

• shows graph for all digital filters

PROCEDURE

• There are three group of output produce by this development as shown below

GROUP 1:

RFilt                -           LP Filtered RED Led Measured Intensity (red)

R_DC              -           DC Level for RED Led Measured Intensity (black)

IRFilt             -           LP Filtered IR Led Measured Intensity (blue)

IR_DC            -           DC Level for IR Led Measured Intensity (red)

GROUP 2:

IRDiff            -           LP Filtered, IR AC signal (red)

dIRFilt            -           Differentiated LP Filtered IR data (black)

Peak                -           Output of the Peak Follower Algorithm (blue)

GROUP 3:

 BPM                -           Heart Rate in beats-per-minute (red)

SpO2               -           Oxygen Saturation in Percent (black)

• A simple moving average filter is used to smooth the heart rate and the oxygen calculations over 10 samples

CONCLUSION

• The output produced shows the effectiveness using digital filters. The graph also can help to speed up the process to troubleshoot or calibrate in future.