MPS Open-Source Ventilator

Automated Bag Mask Resuscitator

The MPS engineering team is working on an open-source, mechanized BVM bridge ventilator to help apply its expertise in motor controls and power supply on a solution to quickly automate what is normally a manual process. We have followed multiple other open-source design projects, primarily the MIT E-Vent project, in our approach to come up with a working solution.

Block Diagram

Ventilator Power Supply for MPS Open-Source Ventilator

The MPS engineering team is working on an emergency ventilator inspired by the open-source MIT design to aid in the fight against COVID-19. The ventilator power supply uses a notebook power brick that converts facility AC power to DC power to provide charge to both the battery backup charger and the motor. Using an easily accessible AC/DC power supply allows the design to be built quickly with a minimal number of simple, off-the-shelf components. As an alternative to the notebook power brick, an MPS ventilator AC/DC power supply module could be used to directly convert facility AC power to DC power. The ventilator AC/DC power cord connects directly to the ventilator DC/DC battery charger/ventilator power path management board.

Products used in design:

Ventilator Battery Backup, Battery Management System

The MPS engineering team is working on an emergency ventilator inspired by the open-source MIT design to aid in the fight against COVID-19. A notebook power brick provides charge to the ventilator DC/DC battery charger. This design is different from other ventilator chargers, as the power brick provides power to the ventilator and charges the ventilator battery backup at the same time. If connection to the AC/DC supply is lost, the ventilator power path switches to the battery as backup to increase reliability.

Products used in design:

Ventilator Internal Power

The MPS engineering team is working on an emergency ventilator inspired by the open-source MIT design to aid in the fight against COVID-19. The design uses integrated power management hardware to run the system independent of lab power supplies if there is a loss in the main power input. The ventilator DC/DC power modules boost the voltage from the power source to the motor controls. The ventilator boost controller and the ventilator power modules provide the necessary voltage required to quickly automate what is normally a manual process of squeezing a bag valve mask (BVM) resuscitator.

Products used in design:

Ventilator Electric Motor, Motor Controller

The MPS engineering team is working on an emergency ventilator inspired by the open-source MIT design to aid in the fight against COVID-19. The ventilator electric motor in this design mechanizes a BVM bridge ventilator to quickly automate what is normally a manual process. The ventilator motor controls are powered by a notebook power brick or a battery backup system through an MPS DC/DC boost board. The ventilator BLDC motor is equipped with an encoder, controller, and motor drivers. The ventilator BLDC motor control/ventilator motor driver use a motor driver module and angle position sensing to automate the squeezing of the standard BVM. This type of ventilator motor control can safely and easily automate a manual resuscitator when a full ICU ventilator may not be available.

Products used in design:

  • Motor Controller MMP742038-24-C
  • Smart Motor MSM942038-24
  • Other Smart Motor Modules

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