Ultrasonic atomizer

• Main Authors: Ming-Yong Chen, 陳明永
• Other Authors: Kuo-Lan Su
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/86520565466273631519

碩士 === 國立雲林科技大學 === 電機工程系碩士班 === 100 === In this paper the use of vibrator inverse piezoelectric effect, generate ultrasonic frequency range of electrical signals through electronic drive circuit to generate high frequency oscillation principle to promote the piezoelectric oscillator , resulting in their deformation behavior of ceramic materials, squeeze the liquid through the deformation, to current into mechanical vibrations of the ultrasonic wave frequency of vibration of liquid mist particles into very small , that the ultrasonic nebulizer. Production of this paper complete the following five parts of the internal circuit design : (A)the power circuit : 110V 60Hz step-down transformer to generate the required input by the three groups of power , DC24V for the oscillator circuit, fan use , DC 5V micro- controller IC for use. (B) ultrasonic oscillation circuit: the decision of high volatility, piezoelectric oscillator. (C) MCU control circuit: charge (1) control oscillator circuit of the power supply. (2) the strength of spray volume control. (3) low- level detection. (4) PWM three-color LED lights change color mixing. (5) the working state light control. (D) micro- controller IC: to HT4806A-1 as the main control circuit , writing assembly language. (E) the water level detection control circuit: the use of C1815 transistors water level probe to the 1K resistor connected to the MCU''s I / O, the voltage level of the High / Low in the low water level to determine whether state.