Design of Mouse Pad Monitoring Heart Rate and Bloody Oxygen Saturation Based on Microcontroller Control Unit
نویسندگان
چکیده
Heart rate and bloody oxygen saturation are significant human's health parameters. This design is a mouse pad monitoring heart rate and oxygen saturation, to reduce the risk of undetected heart state change after concentrating on computer for a long time. Optical power signals reflected by blood are collected by reflective photoelectric sensor, NJL5501R, and then through filtering and amplification of integrated analog front end, AFE4490, are collected by MCU, STM32F103.The MCU calculates out the values of P-P interval, heart rate (HR) and bloody oxygen saturation (BOS) and transmits them to upper computer via USB or smart phone via Bluetooth, resulting in real-time monitoring heart state. The experiment shows the accuracy of this mouse pad: P-P interval±10ms, HR±1 and BOS±3%, and human's health situation can be indicated.
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