| 摘要 |
<p>The invention relates to an electronic spirometer. According to the invention, the spirometer comprises a turbine (1), provided with magnet blades (2) whose rotation, determined by the flow of the air inspired and expired by a person, is monitored by a Hall sensor (3), after driving the turbine (1) the air passes through a body with hexagonal tubes (4) playing the role of a pressure reducing element, the pressure difference being measured by a differential sensor (5), the data gathered from the sensors being processed by a microcontroller (6), they being shown on a display (7) and transmitted to a computer by means of a USB interface (12), by means of which there is also carried out the voltage supply of the device.</p> |
