Modeling And Simulation Of Medical Ventilator Pressure Control Ventilation Mode

With the rapid development of microelectronics technology, conventionalpressure-controlled ventilation mode switching from the initial pressure transformed into acomposite pressure switch, this model proved more suitable for human physiologicalresponses. Pressure ventilation is a fluid motion, cyclical, are areas of study hydrodynamics.This article will introduce lfuid mechanics as a counetrpart theory of mathematical modelingto the physical process of pressure-time ventilation modes were analyzed, to derive themathematical functions related to the ifve physical processes of ventilation process. Moreaccurately the mathematical models of physical processes of pressure-time switchingventilation mode are sorted out. Deduced the break expression type and domain of the ifveduring function varies with time, they are lfow rate v(t), the lfow rate Q(t), tidal volume VT(t)，pulmonary pressure PA(t) and airway pressure Paw(t).According to mathematical formulas have been derived, using Lab VIEW software tobuild mathematical models, and to simulation on ifve physical processes, to get the ifnalresults of the simulation curve. The simulation curve and the theoretical curve has beencarefully mutatis and mutandis, it can be seen simulated curve and the theoretical curve isvery similar under the same conditions. Summed up the function of pressure-time ventilationwith ’parameters of patients pulmonary. In this paper, the time pressure ventilation (PCV) andadding a platform for end-inspiratory ventilation modes (EIP) conducted a simulationcomparison, to the quantitative system comparison of ventilation parameters of both providesa theoretical platform, the understanding of EIP and PCV will further, and the further studieson the respiratory control mode has important guiding signiifcance.This study designed simple interface of ventilator using Lab VIEW, making software has dynamic presentation capabilities, and can be further developed for multimedia teaching. Thenature and laws of physics come through mathematical modeling and simulation experimentalobservation, in-depth study of mechanical ventilation to provide a theoretical analysisplatform, and for the simulation of various ventilation modes for software development andlay a solid foundation. For the future ventilator’s improvements of design and performancealso has a forward-looking guiding signiifcance.