Search found 8 matches

by pdu
Wed Apr 01, 2020 9:13 pm
Forum: BasicCPAP/AirSource
Topic: [Software] CPAP+ Control Panel
Replies: 17
Views: 4388

Re: [Software] CPAP+ Control Panel

Hi,

Is help still needed?

Btw, you can think of adding some checksum bytes at the end of the frame.
Best
by pdu
Wed Apr 01, 2020 9:07 pm
Forum: General Concepts/Versions
Topic: [VENTILAID MK III] Concepts for CPAP and CPAP+
Replies: 5
Views: 1435

Re: [VENTILAID MK III] Concepts for CPAP and CPAP+

Also, 3 questions:
-What is med tube?
-What tubing diameter you use? If I wanted to design flow and pressure sensor, what should be the size of it?
-What is the purpose of emergency valve?
by pdu
Wed Apr 01, 2020 9:06 pm
Forum: General Concepts/Versions
Topic: [VENTILAID MK III] Concepts for CPAP and CPAP+
Replies: 5
Views: 1435

Re: [VENTILAID MK III] Concepts for CPAP and CPAP+

Maybe you should add one directional valve after the first filter? This way we will be sure that less O2 is wasted
by pdu
Fri Mar 27, 2020 10:59 pm
Forum: BasicCPAP/AirSource
Topic: [CPAP] Brainstorm - VentilAid CPAP mk I
Replies: 19
Views: 2820

Re: [CPAP] Brainstorm - VentilAid CPAP mk I

Dont drink and write ;)

Of course we can limit output pressure with some reductor.
by pdu
Fri Mar 27, 2020 8:59 pm
Forum: Pressure Regulation/Switching
Topic: Pressure & Flow control, basic version
Replies: 7
Views: 1308

Re: Pressure & Flow control, basic version

Another thing: how do we make sure that the water will not evaporate after few days?
by pdu
Fri Mar 27, 2020 8:56 pm
Forum: Pressure Regulation/Switching
Topic: Air Pump/Turbine control
Replies: 4
Views: 912

Re: Air Pump/Turbine control

Hi As far as I understand the concept, the fan is always on, set to the constant value of the higher(inhale) pressure. Then during the exhale you just open the valve, which lowers the pressure to desired value. Can you explain, why do you expect the pressure to jum, after we open the valve? I would ...
by pdu
Fri Mar 27, 2020 8:40 pm
Forum: BasicCPAP/AirSource
Topic: [CPAP] Brainstorm - VentilAid CPAP mk I
Replies: 19
Views: 2820

Re: [CPAP] Brainstorm - VentilAid CPAP mk I

Hi,

what do you think about using air compressor as a blower? AFAIK there is some output pressure regulation, We would need to add only some filtering.

Best
pdu
by pdu
Fri Mar 27, 2020 8:29 pm
Forum: Pressure Regulation/Switching
Topic: Pressure & Flow control, basic version
Replies: 7
Views: 1308

Re: Pressure & Flow control, basic version

Hi, I love the idea. Below you will find my concerns: In air humidifier: the output pipe should be above the water level, so we don't pump some water by accident. I am not sure if during an exhalation, the air will not come back. This situation would cause CO2 concentration level increase over time....