On Sat, May 9, 2020 at 07:50 AM, Robert L Read wrote:
In fact Public Invention has defined two standards, one for Data and one for Control. The Data standard is in use, but the Control standard is not. The idea in both cases is to have C-language bindings that can provide both JSON and byte-level transport representations.
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The PIRDS?data standard is the means of transporting data to our public data lake, which used to produce displays of test data based borrowed from clinical displays.? This link is live at the moment (Hooked up to the MillionVents pneumatic device.) Enter 8000 into the number of samples to get 16 second trace:
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Those look like interesting data/control exchange specs. The web browser based charting UI looks good. Definitely a good idea for a later enhancement after the first version of this ventilator is finished.
I personally do not think any computer connected by a pluggable cable, such as a laptop via a USB cable, should be used in any part of the real time control of the ventilator. I do suggest a two possible processor solution such at a Nano doing low level mechanics, basic control and safety monitoring of the ventilator with a second processor, such as a Raspberry Pi doing the UI, ?advanced control and redundant safety monitoring. The two computers should be hardwired (an electronic interconnect, inside the box, like a ribbon cable could still be considered hardwired)) together mounted within the ventilator enclosure.?
A laptop would be a great additional UI and could additionally provide high level intelligence and data storage/analysis for calculating settings from patient data to load into the ventilator, but not be involved in any real time control.?
More at this link:
/g/VentilatorDevelopers/message/1934Tom, wb6b
