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Startseite > Other > Circuit Design of Multifunctional Nursing Monitor Based on AFE4900

Circuit Design of Multifunctional Nursing Monitor Based on AFE4900

Veröffentlichte Zeit: 2020-03-16 10:18:56

This reference design is a simple, wearable, multi-parameter patient monitor that uses a single-chip biosensor front-end AFE4900 device for simultaneous electrocardiogram (ECG) and photoplethysmography (PPG) measurements. Use CC2640R2F device (supports BLE 4.2 and 5) to transmit measured data to a remote location. This reference design runs on a single CR3032 battery and provides 30 days of battery life. Raw data allows users to calculate heart rate, blood oxygen concentration (SpO2), pulse transit time (PTT), and ECG. Two on-board light-emitting diodes (LEDs) indicate to the user low battery detection and ECG lead-out detection.

Nursing monitor circuit design

Nursing monitor circuit design


Simple, wearable, multi-parameter patient monitor for PPG and ECG

Provide raw data to calculate heart rate, SpO2 and PTT

ECG and PPG simultaneous measurement using single-chip biosensor front-end AFE4900 device

PPG (optical heart rate monitoring and SpO2) supports four LEDs and three photodiodes (PD) and improves digital signal subtraction to improve signal-to-noise ratio (SNR)

Electrocardiogram (LEAD I) signal

Integrated Arm® Cortex®-M3 and 2.4GHz RF Transceiver (CC2640R2F) supports wireless data transmission-BLE 4.2 and 5.0

Operated by CR3032 (3 V, 500 mA coin cell battery), using efficient DC / DC converter, battery life is 30 days

Small size helps easily adapt to wearable applications

Nursing monitor circuit design

Etikett: AFE4900



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