Device for simulating spontaneous respiratory movement of human lung

The utility model belongs to the field of the study on respiratory physiology and discloses a device for simulating the spontaneous respiratory movement of a human lung. The device comprises a simulated lung cavity, springs, a pull rope, a flow sensor, a touch display screen, a motor driver, a direct-current servo motor, a control circuit and the like. Respiratory physiological parameters, including the inspiration and expiration ratio, the respiratory rate, the tidal volume, the vital capacity and the like, are input through the touch display screen. The flow of air passing by the air change port of the simulated lung cavity is detected by the flow sensor. A motor control signal is triggered by a microcontroller according to the set respiratory parameters and the detected flow signal. After that, the reeling and the unreeling of the pull rope are controlled by the motor. Finally, the respiratory movement of the simulated lung cavity is controlled. The device disclosed by the utility model is more in line with the respiratory physiology of the human lung and has extremely high application values in the aspects of scientific research, teaching and respiratory-related product testing.