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The Micro controller is the ESP32 WiFi + Bluetooth development board nodemcu-32s, which provides Wi Fi and Bluetooth functions through SPI / SDIO or I2C / UART interface, with high integration, ultra-low power consumption and stable performance.
The negative temperature coefficient thermistor NTC - MF52AT is used to detect the temperature change. After linearizing the measured data of the thermistor, a relatively accurate user temperature is obtained.
AD8232 is an integrated signal conditioning module for ECG and other bioelectricity measurement applications. The output signal of the sensor is collected, then converted and processed to obtain the detected heart rate.
The negative temperature coefficient thermistor NTC - MF52AT is used to detect the temperature change caused by exhalation during breathing, and calculate the user's respiratory rate through data processing.
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IEEE/ICACT20220123 Slide.07
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