There are very many open source ventilator design projects ongoing in the world. Most of them are very simple and lack measurement capability to measure flow and pressure. This is critical to safely adjust ventilators to the patient.
Therefore the purpose of this project is to develop an inexpensive measuring device to A) test open source ventilators, B) monitor ventilator splitting setups, C) potentially be part of components in open source ventilator designs.
The display receives JSON data from the sensor hub and displays graphs and key values. The software will be published as open source. An early video demo is available here, https://www.youtube.com/watch?v=sYYO7WvzXks
The sensor hub contains a digital airway pressure sensor and a digital differential high accuracy pressure sensor for venturi tube measurements. The hub collects data with 50 samples per seconds and transmits JSON data to a display device. The software will be published as open source. The electronics are built on an Arduino Proto shield and could be made into a shield with a real printed circuit board in the future. 3mm ID tubing is used for measured signals and connections are made with Luer-lok connectors.
First version of calibration curve. goals.xlsx
|Sven Forsberg, Lundinova AB||Project leader, electronics, sensors,…|
|Petter Frieberg, Klinfys, Lund||Flow simulations|
|Einar Heiberg, Klinfys, Lund||Documentation, all-in-all|
|Erik Ekbom, BFT, SUS||3D printing|
Design files will be made available once a stable prototype is available. In the mean time, please contact us for details.