As the global population ages and young people work at a faster pace, health concerns are becoming increasingly prominent. In this context, people's daily health monitoring has become increasingly important. Heart rate and blood oxygen saturation, as important life indicators of the human body, can directly reflect the health status of various tissues of the human body. Based on this feature, more and more wearable devices use these two tests as "standard equipment" to play an auxiliary role in health management. Based on the PixArt PAH8009 and CSR BC417 chips, the Heart Rate and Blood Oxygen Detection Solution launched by Dalian Daquan Ding can provide stable performance for the system and realize real-time health monitoring and management.
In the data acquisition part, the PAH8009 used in this solution is a new generation of low-cost PPG sensors under PixArt. It integrates CMOS sensors, analog processing/digital control circuits, light-emitting diodes and other modules. Moreover, the skin color detection compensation mechanism and algorithm integrated in the chip can also automatically adapt to different skin colors. In addition, PAH8009 also has excellent resistance to ambient light, so it can maintain excellent performance whether indoors or outdoors. In terms of Bluetooth connection, this solution adopts CSR's mature MCU - BC417. Through this product, the data detected by the solution can be connected with the smart mobile terminal, so that it can be displayed and recorded on the APP in real time.
Core technical advantages:
● Support continuous real-time heart rate and blood oxygen detection;
● Support wearing detection, the detection time is less than 1S;
● With excellent anti-ambient light performance, it can be applied to various application scenarios such as indoor and outdoor;
● Automatic compensation mechanism adapted to skin color detection, which can automatically adapt to different skin colors such as whites, yellows, and blacks;
● Free hardware reference design, software reference code, structural documentation and guidance;
● Ready-made and reliable mature algorithms can be provided for free, which greatly accelerates the development progress of the project;
● It can be connected with the smart mobile terminal through bluetooth, and the data can be displayed and recorded on the APP.
Program Specifications:
● Heart rate detection range: 30 - 255 bpm;
● Blood oxygen detection range: 60 - 100%;
● Heart rate accuracy: static Arms≤±3 BPM, dynamic Arms≤±5 BPM;
● Blood oxygen accuracy: static Arms≤±7 %;
● System voltage working range: 3.2V ~ 4.2V;
● System working temperature: -20 ~ +50℃;
● System sleep power consumption: less than 5uA;
● System working power consumption: less than 1.5mA;
● Anti-interference ability: EFT/4 kV & ESD HBM 4 kV.
