October 1, 2021 Thesis Open Access

MANDEFRO BESHAHWURED

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    <subfield code="a">FUZZY BASED CONTROL OF VOLUME AND PRESSURE ASSIST MEDICAL VENTILATOR</subfield>
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    <subfield code="a">&lt;p&gt;Positive pressure ventilation (PPV) mode is the direct application of air to the patient&amp;rsquo;s&lt;br&gt;
lungs and is the most commonly used ventilation mode for passive patients. Mechanical&lt;br&gt;
ventilators are life-saving medical equipment if a person is unable to breathe on their own.&lt;br&gt;
Due to the scarcity and unavailability of the machines, patients are not getting assistance.&lt;br&gt;
The proposed thesis aims to design a low-cost volume and pressure-controlled mechanical&lt;br&gt;
ventilator for pandemic emergencies and scarcity. A Fuzzy logic controller is used to&lt;br&gt;
control both the pressure and volume parameters. The designed system can be used for&lt;br&gt;
different patients that need different tidal volumes and pressure. The clinician can set the&lt;br&gt;
tidal volume and airway pressure depending on the lung requirements. A piston cylinder&lt;br&gt;
mechanism is used to deliver the required volume and pressure of gas to the pneumatic&lt;br&gt;
circuit. Armature controlled DC motor is used to drive the ventilator mechanism, and its&lt;br&gt;
model is used to determine the maximum displacement, velocity, and delivery capacity of&lt;br&gt;
the mechanism. The testing is done by interfacing the sensors and actuators and deploying&lt;br&gt;
the Simulink model on an Arduino mega controller. A medical linear test lung simulator is&lt;br&gt;
used for the test&lt;/p&gt;</subfield>
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