Wireless Charging for Portable Vital Signs Monitor
Personal medical devices have become more portable and small and have become an integral part of home-based care.
Home-based care can be more convenient and cheaper alternative to a long-term hospital stay.
Cardiovascular diseases are the leading cause of death globally. Continuous heart rate monitoring helps prevent sudden heart attacks.
Portable medical devices could allow patients to lead an unrestricted life and only visit hospital when is strictly necessary.
Long-term ECG recording during daily could provide important information about patient health situation.
I would like to build a portable patient montoring system based on a nRF52DK development platform, biopotential sensors and a wireless charging system.
My idea is to use an electromagnetic field to transfer the energy between the portable device and the charging station.
Biopotential signals can be acquired with a multi-channel ECG analog front end with respiration measurement and pace detection Texas Instruments ADS1298.
Heart rate and pulse oximetry can be measured through an optical pulse oximeter and Heart-Rate Sensor IC with two LEDs and a photodetector Maxim MAX30100 or SiLabs Si1143.
Body temperature can be measured by the Analog Devices ADT7420 temperature sensor.
The nRF52DK will wirelessly transmit the data through BLE to a mobile device, such as a smartphone and then to a web server via 3G/4G network.
The software will perform complete real time analysis of HRV beat-to-beat interval variation.
When heart rate or blood oximetry exceeds or falls below a pre-defined threshold, the doctor will be informed by an email.
The monitor will consist of several components:
– nRF52DK development platform
– Multi-channel ECG analog front end with respiration measurement and pace detection Texas Instruments ADS1298
– Optical Pulse Oximeter and Heart-Rate Sensor IC with two LEDs and a photodetector Maxim MAX30100 or SiLabs Si1143
– Digital temperature sensor Analog Devices ADT7420
– FT1236 5W receiver
The FT1235M will be used as a transmitter in a portable charging station.