Low Energy Wireless ECG - An exploration of wireless electrocardiography and the utilization of low energy sensors for clinical ambulatory patient monitoring
MetadataShow full item record
In this project we have investigated and assessed wireless patient monitoring solutions.Trough qualitative interviews we have investigated the infrastructure andpractice of wireless ECG monitoring systems at two Norwegian hospitals. Combiningwhat we learned from the existing solutions with different WBAN implementationsfound in literature, we propose a design for a wireless monitoring systembased on available technology and open standards. We validated this designby building prototype that test certain critical aspects of wireless ECG monitoring.The prototype was based on a Bluetooth Smart enabled node, an Android gatewayand a modern web-server for real time streaming.In conclusion we see that the current version of Bluetooth Smart is able tosupport continuous streaming of clinical grade raw ECG at a 1000 Hz samplingrate with 32 bit samples. A BLE enabled ECG device can support this throughputand still have more than 4 times the battery lifetime compared to the existingsolutions we investigated. We have also assessed the end-to-end delay in ourproposed design for a monitoring solution, and showed that for one of our usecases, this delay averages around 60ms.We have evaluated the technology backing a WBAN enabled hospital as readyfor clinical usage, but don t believe the current organization of clinical technologywill change before outside factors make the manufacturers rethink their currentbusiness models.