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Pulse Oximeter

Pulse Oximeter. Luz Adriana Osorio Phong Nguyen Supervisor: Professor N. Tait. Product Information. Function: Measures Blood Oxygen Saturation levels SpO 2 % by light absorption . Medical uses: Anesthesia/Surgery/Intensive care Elderly Care Sports training

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Pulse Oximeter

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  1. Pulse Oximeter Luz Adriana Osorio Phong Nguyen Supervisor: Professor N. Tait

  2. Product Information • Function: Measures Blood Oxygen Saturation levels SpO2% by light absorption. • Medical uses: Anesthesia/Surgery/Intensive care Elderly Care Sports training Pilots • Advantages: Safe Optical Source Non Invasive • Objective: To design and build a pulse oximeter To provide optical measurement of pulse and blood Oxygen. Provide Accurate SpO2% measurement range [80 – 100]% Product Information

  3. Design Concept • Beer-Lambert law of light absorptionUses Red (660nm) and Infrared (920nm) lights • Arterial blood (Pulse Amplitude) detection • Limitations:Sensitive to movement. Difficult to test. Theoretical Model Design Concept

  4. Block Diagram Luz’s work Phong’s work Altera DE2 Board Block Diagram

  5. Progress to date and Remaining Work Progress: Design implementation and testing of: • LED drive and timing • Signal separation / Automatic Gain Control • Demodulation/ Amplification / Filtering • Analog to Digital data conversion • Amplitude and pulse calculation • Data display: Oxygen Saturation (SpO2) and Pulse • Full design integration (only implementation) Remaining • Digital signal refinement • Further testing Progress to date and remaining work

  6. Pulse Oximeter Circuit Altera DE2 Board Patient Pulse (Circuit output) Pictures

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