SLAAE25 May   2021 MSP430FR2355 , MSP430FR2355

 

  1.   Trademarks
  2. 1Introduction
  3. 2Theory of Operation
  4. 3Single-Chip Design
  5. 4Hardware
  6. 5Software
    1. 5.1 Sample and Condition the PIN Diode Signal
    2. 5.2 Sample and Measurement Sequence
    3. 5.3 First Stage DC Tracking
    4. 5.4 Low-Pass FIR Filter
    5. 5.5 Calculate Heart and SpO2
  7. 6Debug GUI
  8. 7Test Result
  9. 8Summary
  10. 9References

7 Test Result

Tests were done on the blood oxygen simulator base on this demo. The test results are shown in Figure 7-1. You can find that our solution can measure the blood oxygen and heart rate values accurately.

GUID-DDA72AAD-7D9D-4EAF-A32D-3CB2CD064963-low.png Figure 7-1 Test Base on Blood Oxygen Simulator

A comparison was done with the mass-produced pulse oximeter on the market. The results are shown in Figure 7-2. In the same time, the standard pulse oximeter and the demo were used to measure two fingers. The measurement results showed that the data was consistent.

GUID-B495636D-31B4-49B6-ABC1-5FE9C7722C20-low.png Figure 7-2 Comparison Test (Left: MP Pulse Oximeter, Right: Demo Base on FR2355)