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The continued miniaturization of smart sensor chips has driven the portability of smart medical care. Although the traditional health parameter monitoring equipment is accurate in measurement, it is greatly limited in time and space due to factors such as bulky size, high cost, complex operation, and inconvenience in use. In view of the above problems, this paper proposes a dual-spectrum mobile phone ring buckle health monitoring system solution with high integration, high precision and small size. The signal is better at the fingertips, with relatively little high frequency noise and baseline drift. The dual-spectrum mobile phone ring buckle health monitoring system studied in this paper can accurately measure pulse waveform, heart rate value, blood oxygen value and other information. It supports Bluetooth communication and can remotely send the collected data to the mobile APP. The monitoring system adopts the reflection photoelectric pulse wave detection method to realize non-invasive acquisition. The photoplethysmography (PPG) signal is collected by using red light and infrared light double LED. Through filtering, differential threshold method and other algorithms, the heart rate value and blood oxygen value are obtained from the original pulse wave. The system is small in size, low in power consumption and high in precision. The experimental results show that the heart rate error of the integrated system can reach ±2%+2 beats/min, and the blood oxygen error can reach ±2% within the range of 70-100.
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