Piezoelectric ceramic spraying sheet driving circuit controlled through single-chip microcomputer

Abstract

The invention discloses a piezoelectric ceramic spraying sheet driving circuit controlled through a single-chip microcomputer. The piezoelectric ceramic spraying sheet driving circuit comprises a single-chip microcomputer MCU 10 which generates two paths of push-pull PWM signals Gate1 and Gate2. The output ends of the two paths of push-pull PWM signals are accessed to a push-pull converter which generates a driving voltage signal. The output end of the driving voltage signal is connected in series with an energy storage inductor so as to drive a piezoelectric ceramic spraying sheet. The input end of an LC filter is connected with a current sampling circuit. The input end of the current sampling circuit is connected with the output end VCC of a power supply management circuit. The output end VCC of the power supply management circuit is also connected with a voltage sampling circuit. The feedback end of the power supply management circuit is connected with a voltage regulating circuit. The piezoelectric ceramic spraying sheet driving circuit is divided into three parts: the single-chip microcomputer, the push-pull converter and other peripheral circuits and finally used for driving the spraying sheet to work and atomize the liquid medicine.

Description

technical field [0001] The invention is applicable to the technical field of medical devices, and in particular relates to a driving circuit of a piezoelectric ceramic spray sheet controlled by a single-chip microcomputer. Background technique [0002] Nebulization inhalation therapy is being favored by more and more hospitals and families due to its advantages of small dosage and low toxic and side effects. [0003] The mesh atomizer is a new type of atomizer that has appeared in recent years. The piezoelectric ceramic spray sheet is used as the core component. The mesh atomizers currently on the market are driven by half-wave and pulse waves, and the electrical efficiency of the circuit is low. , by raising the driving voltage to increase the atomization rate and affect the service life of the piezoelectric ceramic spray sheet. [0004] The present invention is a drive circuit designed based on the working principle of the piezoelectric ceramic spray sheet. A push-pull co...

AI Technical Summary

Problems solved by technology

[0003] Mesh nebulizer is a new type of nebulizer that has appeared in recent years. Piezoelectric ceramic spray sheet is the core component. At present, the mesh nebulizers on the market are driven by half-wave or pulse wave, and the electrical efficiency of the circuit is low. , by increasing the driving voltage to increase the atomization rate and affect the service life of the piezoelectric ceramic spray sheet

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