Fingertip Pulse Oximeter Solution Development Case

Project Background: The client is a medical device company in Shenzhen, needing to develop a finger clip oximeter, meeting medical-grade precision requirements. Solution Design: 1. Main Control Chip: MSP430F5528 low-power MCU 2. Sensor: Maxim MAX30102 blood oxygen heart rate sensor 3. Display Solution: 0.96 inch OLED display, showing blood oxygen and pulse rate 4. Power Solution: 2 AAA batteries power supply, low-power design 5. Algorithm: Blood oxygen saturation algorithm, pulse rate detection algorithm 6. Functions: PI perfusion index, low perfusion detection, alarm function Technical Challenges: - Measurement Accuracy: Blood oxygen accuracy ±2%, pulse rate accuracy ±2bpm - Anti-motion Interference: Maintain stable measurement during motion - Low Power: Single measurement power consumption <10mA Deliverables: - Hardware Design: Completed oximeter main control board design - Algorithm Development: Blood oxygen detection algorithm, anti-interference algorithm - Medical Device Registration: NMPA Class II medical device registration - Testing Certification: Passed GB/T 18833 standard testing Customer Value: Product successfully obtained medical device registration certificate, entered hospital and pharmacy channel sales.

Proje Sonuçları

Project Results: Successfully delivered smart dancing cactus toy PCBA solution. Client has started mass production with monthly output of 45,000 units.

Key Metrics:

• Yield rate: 99.0%
• Power consumption: USB charging, 3 hours playback
• Performance: Voice recording, dancing, 120 songs, Bluetooth
• Reliability: Motor durable, 500+ hours operation

Client Feedback: Dancing motion smooth, song library rich.

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