Breathing pressure fuzzy control type respirator and breathing pressure fuzzy control method

Abstract

The invention relates to a respirator, and discloses a breathing pressure fuzzy control type respirator and a breathing pressure fuzzy control method. The breathing pressure fuzzy control type respirator controls action of each part by means of actual control output of fuzzy piping and instruments diagram (PID) controller in a template embodiment, and each sensor collects signal variable of each part and transfers to the fuzzy PID controller to do fuzzy control operation. An air suction electromagnetic proportional valve is capable of controlling opening of a valve hole to continuously vary in a certain range according to corresponding control signal (voltage or current signal). The fuzzy PID controller is capable of controlling flow which enters back stage gas channel to continuously vary in a certain range through controlling opening of each valve and further controlling airway pressure. Breath becomes more comfortable and safer after patients using the respirator.

Description

technical field [0001] The invention relates to a ventilator, in particular to a breathing pressure fuzzy control ventilator and a breathing pressure fuzzy control method. Background technique [0002] Respiratory muscles are the muscles involved in the movement of breathing. Including external intercostal muscles and diaphragm, sternocleidomastoid, back muscles, chest muscles and so on. [0003] Ventilator is a device that can replace, control or change people's normal physiological breathing, increase lung ventilation, improve respiratory function, reduce breathing work consumption, and save heart reserve capacity. [0004] Existing ventilators generally have four basic functions, namely inflating the lungs, switching from inhalation to exhalation, discharging alveolar gas, and switching from exhalation to inhalation, and the cycle repeats in turn. Including: ⑴It can provide the power to transport gas and replace the work of human respiratory muscles; ⑵It can produce a c...

AI Technical Summary

Problems solved by technology

However, due to the continuity of the control process and the time required for parameter tuning, retuning is actually difficult to implement, and it is almost impossible to complete in actual control

In practical applications, by simplifying it, it can become a system whose basic linearity and dynamic characteristics do not change with time, so that PID can be controlled, but the control effect is poor

Moreover, the ventilator using the traditional PID algorithm controller sometimes produces a feeling of rushing and rushing, unable to track the patient's breathing, often resulting in man-machine confrontation, poor comfort in use, and even medical accidents in severe cases

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