3 ms·
My initial reaction was to say that there is no way the RPi would be reliable enough for clinical purposes. However, from the schematics, it looks like the RPi
by mbreese 6y ago
My initial reaction was to say that there is no way the RPi would be reliable enough for clinical purposes. However, from the schematics, it looks like the RPi is only used for displaying the airflow curves and not used to control the ventilating. A microcontroller is used for that critical function.
If this is the case, then this would make the reliability much better and there is a chance it could be useful to many places. If the SD card on the Pi dies (which, if they are logging the data to SD and not RAM, is a likely event), then they can have spare SDs available as part of the standard operating procedure. It's not ideal, but so long as the main microcontroller is functioning, the display could be considered non-critical. Although, ICU staff might disagree...
- baptistejamin 6y agoIt's why there is a second board to handle critical tasks: https://news.ycombinator.com/item?id=25671318 https://news.ycombinator.com/item?id=25671318
- mbreese 6y agoIf I could ask -- I saw a LoRA circuit mentioned in the schematics... what is that used for?
- pp-ir 6y agoGood question! The plan was to use it for the central alarm room in temporary hospitals where no network exists. We planned to develop a small gateway to gather all the devices alarms, linked to bed number. It was not developed, but hardware has the feature. The LoRa fairness will allow very few data to come up, but high level alarms vital could be transmitted several times in a second if needed. We know we cannot use it to transfer waveforms of course.