fig3

Figure 3. Characterization of the fully assembled respiration sensor. (A) Output voltage (calibrated) plotted against increasing air pressure (in cmH₂O); (B) Correlation plot between air pressure and magnet-to-sensor distance (experimental and calculated); (C) Calibrated output voltage for step-by-step loading and unloading of positive air pressure (inhalation); (D) Calibrated output voltage for step-by-step loading and unloading of negative air pressure (exhalation); (E) Output voltage for 1,000 cycles of continuous air pressure application alternating between 8 cmH₂O and -15 cmH₂O; (F) The first and final ten cycles of the output voltage plot in Figure 1E.