| 摘要 |
A lung ventilator turbine volume-controlled ventilation method implements volume-controlled ventilation for a ventilator by means of turbine motor rotational speed control, inhalation phase control, and exhalation phase control. The method comprises the following main steps: the ventilator is started up, a control unit in the ventilator issues a rotation speed U control instruction to a turbine driver, the turbine driver drives a turbine motor, and then the control unit detects the breathing state of a patient, if the patient needs to inhale air, proceeds to an inhalation phase control, and, if the patient needs to exhale air, proceeds to an exhalation phase control, where the inhalation phase control is implemented by the control unit that outputs driving voltage Vto regulate the extent to which an inhalation valve is opened, and the exhalation phase control is implemented by the control unit that outputs driving voltage Vto regulate the extent to which an exhalation valve is opened. By combining control of some operating parameters of the ventilator with the rotational speed of the turbine motor, the method implements constant current control and real-time synchronous control of the turbine motor, thus allowing air supply to be provided to the ventilator by the turbine motor at places such as in the field where air supply cannot be provided. |
