Skip to content

Latest commit

 

History

History
105 lines (93 loc) · 2.96 KB

hardware.rst

File metadata and controls

105 lines (93 loc) · 2.96 KB
Raw

Hardware

Mechanical Diagram ----------------

Schematic diagram of main mechanical components

Schematic diagram of main mechanical components

Flow Actuators <hardware.actuators> Sensors <hardware.sensors> Safety Components <hardware.safety> Tubing and adapters <hardware.tubing>

Flow actuators

  • Actuator PCB/overview (link to PCB with BoM, schematic, layout, etc.)
  • Proportional solenoid valve (V1) (link to doc with crit specs, driving circuit, part spec, datasheet, alternatives, etc.)
  • Expiratory valve (V2) (link to doc with crit specs, driving circuit, part spec, datasheet, etc.)

Sensors

  • Sensor PCB/overview (link to PCB with BoM, schematic, layout, etc.)
  • Oxygen sensor (O2S) (link to doc with crit specs, interface circuit, part spec, datasheet, alternatives, etc.)
  • Proximal pressure sensor (PS1)
  • Expiratory pressure sensor (PS2)
  • Expiratory flow sensor (FS1)

Safety Components

  • 50 psi, high pressure relief valve (PRV1)
  • Safety check valve (CV)
  • 70 cmH2O patient-side pressure relief valve (PRV2)
  • Filters (F1, F2)
  • PEEP valve (PEEP) (include the design bifurcation in this module description)

Tubing and Adapters

  • Manifold 1
  • Manifold 2
  • Mounting Bracket 1... etc.

Bill of Materials (need to think about what goes in this table, probably separate BoMs into tables by category, but here's a sample table) -------------------

Ref Name Part Description
V1 Inspiratory on/off valve red hat process valve completely cut off flow if required
PRV1 High pressure relief valve Sets to 50 psi regulates upstream pressure to 50 psi
CV Inspiratory check valve valve stat here In case of emergency power loss, allows patient to continue taking breaths from air
PRV2 Maximum pressure valve ... Sets absolute maximum pressure at patient side to 53 cm H2O
F1/F2 Filters HEPA filters? Keeps the system's sensors from becoming contaminated
O2S Oxygen sensor Sensiron ... Checks FiO2 level
PS1/PS2 Pressure sensors mini4v Uses gas takeoffs to measure pressure at each desired point
FS1 Flow sensor Sensiron flow sensor Measures expiratory flow to calculate tidal volume
M1/M2 Manifolds 3D printed parts Hubs to connect multiple components in one place
V3 Expiratory on/off valve Festo Electrical Air Directional Control Valve, 3/2 flow, Normally Closed, 8 mm Push-to-Connect Opens to initiation the expiratory cycle
PEEP PEEP backpressure valve PEEP valve Sets PEEP on expiratory cycle!