A breathing assistance device and its control method

Abstract

The invention discloses a respiratory assist device, comprising a respiratory fixing device, wherein the respiratory fixing device comprises an air inlet and an air outlet; an air inlet pipe is arranged at the air inlet; the respiratory assist device also comprises a control processor, a controlled valve, and a plurality of micro-vibration sensors; the controlled valve and the micro-vibration sensors are respectively connected with the control processor; the micro-vibration sensors are used for detecting airflow; the micro-vibration sensors are respectively arranged at the air inlet and the air outlet of the respiratory fixing device; the controlled valve is arranged at the air inlet pipe; and the control processor controls the controlled valve to close the air inlet pipe when the airflow data detected by the micro-vibration sensors are judged to be in a breathing state, and controls the controlled valve to conduct the air inlet pipe when the airflow data are judged to be in the inspiration state. A control method of the respiratory assist device is also provided by the invention. The air source supply can be dynamically controlled according to the respiratory state, the air is supplied only in an inspiration state, and the air source supply is cut off in the breathing state, so as to achieve the purpose of saving the air source.

Description

Technical field [0001] The invention relates to a safety air-saving breathing auxiliary device, in particular to an airflow control device based on a sensor and an electromagnetic valve and a control method thereof. Background technique [0002] In the existing assisted breathing system, such as figure 1 In the main structure shown, the oxygen storage or oxygen generation device is directly connected to the breathing mask or nasal tube, and oxygen is continuously supplied to the user, and oxygen is provided during exhalation and inhalation. Or use the method of nasal air intake and oral air to reduce oxygen loss to a certain extent, but this method is driven by the impact of breathing, and people need to deliberately pump up their strength when breathing, which will burden the user and bring the breathing belt. Inconvenient to come. [0003] The oxygen supply of the above devices does not change with the breathing rhythm, the oxygen provided is not fully utilized, and the oxygen p...

AI Technical Summary

Problems solved by technology

Or use the method of nasal air intake and oral air outlet to reduce the loss of oxygen to a certain extent, but this method is driven by the impact of breathing, and people need to deliberately muster their strength when breathing, which causes a burden to the user and brings a burden to his breathing. Inconvenience

[0003] The oxygen supply of the above devices does not change with the breathing rhythm, the oxygen provided is not fully utilized, and the oxygen provided during exhalation is completely or to some extent wasted

In occasions that require equipment to assist breathing, such as mountaineering, firefighting, deep wells or high-temperature operations, etc., the defect in the oxygen supply method limits the activities of personnel, and even endangers life in severe cases.

[0004] There are also individual oxygen supply devices that save oxygen through intermittent oxygen supply, but they are not mature

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