Overview
This reference design is a simple, wearable, multi-parameter patient monitor that uses the single-chip biosensing front-end AFE4900 for synchronous electrocardiogram (ECG) and photoplethysmography (PPG) measurements. A CC2640R2F device (supports BLE 4.2 and 5.0) transmits measured data to a remote location. The design runs on a single CR3032 battery and provides 30 days of battery life. Raw data is available for users to compute heart rate, blood oxygen saturation (SpO2), pulse transit time (PTT), and ECG. Two onboard light-emitting diodes (LEDs) indicate low battery and ECG lead detection.
Features
- Simple, wearable, multi-parameter patient monitor for PPG and ECG
- Provides raw data for computing heart rate, SpO2, and PTT
- Synchronous ECG and PPG measurement using the single-chip biosensing front-end AFE4900
- PPG (optical heart rate monitoring and SpO2) supports four LEDs and three photodiodes (PD), with improved SNR via digital ambient subtraction
- Electrocardiogram (Lead I) signal
- Integrated Arm Cortex-M3 and 2.4 GHz RF transceiver (CC2640R2F) supporting wireless data transmission over BLE 4.2 and 5.0
- Operates from a CR3032 (3 V, 500 mAh coin cell) with an efficient DC/DC converter, providing approximately 30 days of battery life
- Small form factor suitable for wearable applications
