Abstract
An automatic control drug dose atomization device and a breathing sensor, main technology is that the capacitive electrode is arranged at the nozzle, and a variable capacitance value proportional to the flow is generated according to the flow of the atomized air flow. The resonance circuit is connected in parallel with the capacitive electrode to generate an inductive capacitance. The value is proportional to the variable capacitance value plus the basic capacitance value. The signal analysis circuit performs frequency analysis on the resonance signal to generate a frequency change signal that detects the frequency change value, and generates the detection lung capacity value and cycle time value. The spray adjustment module is based on the accumulated The effective inhaled drug dose value is compared with the preset drug dose threshold value, and when the accumulated effective inhaled drug dose value reaches the preset drug dose threshold value, the spray output module stops generating atomized airflow.