Implementation of dynamic plotting for a ventilation simulator on android mobile devices.

A ventilation simulator is implemented in android mobile devices to simulate the mechanics of the human lung. The simulation results shall be displayed by a dynamic plot to illustrate the trend of the ventilation parameters in real-time. The chosen software library to perform the plots is AndrodPlot [1]. The library provides basic features and tutorials for dynamic plotting. Tests were performed to find out whether dynamic plotting with dynamic speed and in real-time is possible and feasible with AndroidPlot. The tests consist of temporal analyses of redraw durations for the two used redrawing methods. Both methods use a separate thread to redraw the plot in fixed time intervals or to pass a signal which indicates a necessity for redrawing the plot. The tests showed that dynamic plotting with static speed and close to real-time is possible. Occurring limitations are the sampling frequency and domain width. These limitations should be dealt with to make the dynamic plotting more widely useable.