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- Wrist-Based SpO2, HR, and HRV Health Sensor Platform
This health sensor band platform is a wrist-worn wearable form factor that demonstrates the high sensitivity and algorithm processing functions for health-sensing applications. It includes an enclosure and a biometric sensor hub with an embedded algorithm for heart rate and SpO2 (blood oxygen saturation) which processes PPG (Photoplethysmography) signals from the analog-front-end (AFE) sensor.
Algorithm output and raw data can be streamed through Bluetooth to an Android app or PC GUI for demonstration, evaluation, and customized development.
- Micro board
- MAX32630 microcontroller
- MAX20303 power-management IC (PMIC)
- Dual-mode Bluetooth® connection
- Tri-color status LED
- Sensor board
- MAX86141 analog front-end and optical heart rate sensor with one green LEDs, one red LED, one IR LED, and two photodiodes
- MAX32664 microcontroller with embedded heart-rate algorithm
- Three-axis accelerometer
- MAX4740 quad SPDT switch which, in combination with the MAX86140/41, enables different LED and PD configurations
- One green LED, two combination RGB LEDs (One of these RGB LEDs is currently not used by the algorithm. The extra LED is reserved for future use: To simplify the design, the extra LED and the MAX4740 may be removed for the heart rate, SpO2 use case.)
- MAXDAP Pico Adapter board to be used during a firmware upgrade for the micro board
- Two USB Micro-B cables for firmware upgrade of the micro board or for PC communication with the micro board or charging of the health sensor band
- Health sensor band enclosure
- Battery
- One USB Type-C cable for PC communication with the micro board (Windows 7 or Windows 10) or charging of the health sensor band
Additional requirements:
- PC (Windows 10 only) with Bluetooth connection for data streaming and logging
- Android device with Bluetooth connection for data streaming and logging
- Photoplethysmography (PPG)
- Wrist-based embedded heart rate, blood oxygen saturation (SpO2) algorithm
- Heart rate variability (HRV), respiration rate, sleep quality library algorithm
- Wearable health band form factor
- MAX32664 sensor hub
- MAX86141 PPG analog front-end
- 3-axis accelerometer
- Window and Android GUIs
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