Atomizing sheet driving circuit

Abstract

The utility model provides an atomization sheet driving circuit, the circuit comprises a power supply module, a main control chip, a driving control chip and an atomization sheet driving module, the power supply module is electrically connected with the main control chip, the driving control chip and the atomization sheet driving module, the main control chip is electrically connected with the driving control chip, and the atomization sheet driving module is electrically connected with the driving control chip. The driving control chip is electrically connected with the atomization sheet driving module, the power supply module is used for providing power, and the atomization sheet driving module is used for providing an oscillation signal to drive the atomization sheet. The main control chip sends the PWM pulse signal to the driving control chip, the driving control chip sends the control signal to control the atomization sheet driving module, the atomization sheet driving module provides the oscillation signal to drive the atomization sheet to work, the circuit structure is simple, environmental interference is reduced through digital control, and the working efficiency is improved. A stable control signal is provided for the atomization piece, the stability of the circuit is high, accurate frequency and power adjustment is achieved, and atomization uniformity is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of sprayers, in particular to a drive circuit for an atomizing sheet. BACKGROUND

[0002] As a core component of atomizing equipment, the atomizing sheet is widely used in medical atomizing treatment, air humidification, disinfection spraying and industrial spraying fields. Its working principle is to break liquid medium into micron particles through high-frequency vibration to form uniform atomization effect. The working performance of the atomizing sheet directly depends on the stability and control accuracy of the drive circuit, so the design of the drive circuit is crucial to the reliability and efficiency of the overall equipment.

[0003] The traditional atomizing sheet drive circuit mostly adopts an analog control mode or is built with discrete components, which has the following defects:

[0004] High circuit complexity: relying on multi-stage amplification circuits or complex oscillation circuits not only increases the design cost, but also easily causes stability decline due to component parameter drift;

[0005] Insufficient control accuracy: analog signals are easily disturbed by the environment, and it is difficult to achieve precise frequency and power regulation, which affects the atomization uniformity.

[0006] In view of the above problems, there is an urgent need for an atomizing sheet drive circuit with simple structure and stable control to meet the requirements of modern atomizing equipment for high efficiency and long-term stable operation. CONTENT OF THE INVENTION

[0007] In order to solve the above problems, the application provides an atomizing sheet drive circuit. In this background, the application introduces digital control technology and modular design through a simple circuit structure, aiming to solve the key technical bottleneck of the traditional drive circuit and provide reliable support for the performance improvement of the atomizing equipment.

[0008] The application is implemented by the following technical solutions:

[0009] The application provides an atomizing sheet drive circuit, which comprises a power module, a main control chip, a drive control chip and an atomizing sheet drive module.

[0010] The power module is electrically connected with the main control chip, the drive control chip and the atomizing sheet drive module respectively.

[0011] The main control chip is electrically connected with the drive control chip.

[0012] The drive control chip is electrically connected with the atomizing sheet drive module.

[0013] The power module is used for providing power; and the atomizing sheet drive module is used for providing an oscillation signal to drive the atomizing sheet.

[0014] Further, the power module includes a voltage stabilizer, the input end of the voltage stabilizer is connected with the 5V input, and is grounded through capacitors C1 and C2 respectively, the output end of the voltage stabilizer is grounded through capacitors C3 and C4 respectively, and the output end of the voltage stabilizer is a 3.3V output node.

[0015] Further, the second pin of the main control chip is connected with the 3.3V output node, the third pin of the main control chip is grounded through a capacitor C8, the third pin of the main control chip is connected with a switch SW2 through a resistor R1, one end of the switch SW2 is connected with the resistor R1, the other end of the switch SW2 is grounded, and the 23rd pin of the main control chip is connected with a switch SW1.

[0016] Further, the first pin of the drive control chip is connected with the 5V input, the fourth pin of the drive control chip is connected with the 31st pin of the main control chip, and the fifth pin of the drive control chip is electrically connected with the atomization piece driving module.

[0017] Further, the atomization piece driving module includes a field effect tube M1, a triangular inductor L1 and a connection terminal D2, the gate of the field effect tube M1 is connected with the fifth pin of the control chip through a resistor R4, the drain of the field effect tube M1 is connected with the connection terminal D2, the source of the field effect tube M1 is grounded, the first pin of the triangular inductor L1 is connected with the drain of the field effect tube M1, the second pin of the triangular inductor L1 is connected with the 5V input through a resistor RS1, and the third pin of the triangular inductor L1 is connected with the connection terminal D2.

[0018] Further, the external terminals P1, P2, P3 and P4 are all connected with the main control chip, the external terminals P1 and P3 are three-pin terminals, the external terminal P2 is a four-pin terminal, and the external terminal P4 is a six-pin terminal.

[0019] Further, the first pin of the external terminal P1 is grounded, the second pin of the external terminal P1 is connected with the sixth pin of the main control chip, and the third pin of the external terminal is connected with the 5V input.

[0020] Further, the first pin of the external terminal P2 is connected with the eighth pin of the main control chip, the second pin of the external terminal P2 is connected with the ninth pin of the main control chip, the third pin of the external terminal P2 is connected with the 3.3V output node, and the fourth pin of the external terminal P2 is grounded.

[0021] Further, the first pin of the external terminal P3 is grounded, the second pin of the external terminal P3 is connected with the 33th pin of the master control chip, and the third pin of the external terminal P3 is connected with 5V input.

[0022] Further, the first pin of the external terminal P4 is connected with the 3th pin of the master control chip, the second pin of the external terminal P4 is connected with the 25th pin of the master control chip, the third pin of the external terminal P4 is connected with the 34th pin of the master control chip, the fourth pin of the external terminal P4 is connected with the 35th pin of the master control chip, the fifth pin of the external terminal P4 is connected with 3.3V output node, and the sixth pin of the external terminal P4 is grounded.

[0023] The beneficial effects of the present application are as follows:

[0024] The utility model discloses a master control chip sends PWM pulse signal to drive control chip, and then drive control chip sends control signal to control atomizing piece drive module, and atomizing piece drive module provides oscillation signal to drive atomizing piece to work, and the circuit structure is simple, reduces environmental disturbance through digitization control, provides stable control signal for atomizing piece, and the stability of circuit is high, realizes accurate frequency and power regulation, and improves atomization uniformity. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the circuit schematic diagram of the master control chip of the utility model;

[0026] Figure 2 It is the circuit schematic diagram of switch SW1 and switch SW2 of the utility model;

[0027] Figure 3 It is the circuit schematic diagram of power module of the utility model;

[0028] Figure 4 It is the circuit schematic diagram of drive control chip and atomizing piece drive module of the utility model;

[0029] Figure 5 It is the circuit schematic diagram of external terminal of the utility model. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, wherein the same or similar labels represent the same or similar elements or elements with the same or similar functions throughout. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] It should be noted that all directional indications, such as up, down, left, right, front, back, etc., in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0032] In addition, the description involving "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of a person skilled in the art, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0033] Please refer to Figures 1 to 5 The present application provides an atomizing piece driving circuit, which comprises a power module, a main control chip, a driving control chip and an atomizing piece driving module. The power module is electrically connected with the main control chip, the driving control chip and the atomizing piece driving module, and is used for providing power supply for each module on the circuit board. The main control chip sends a PWM pulse signal to the driving control chip, and the driving control chip sends a control signal to control the atomizing piece driving module. The atomizing piece driving module provides an oscillation signal to drive the atomizing piece to work.

[0034] As shown in Figure 3 The power module comprises a voltage stabilizer, the model of the voltage stabilizer is AMS1117-3.3, the third pin of the voltage stabilizer is an input end, the third pin of the voltage stabilizer is connected with a 5V input voltage signal, and is grounded through a capacitor C1 and a capacitor C2 on the input end, so as to reduce noise interference. The first pin of the voltage stabilizer is a ground end, the second and fourth pins of the voltage stabilizer are interconnected as an output end, the output end of the voltage stabilizer is grounded through a capacitor C3 and a capacitor C4, so as to play a role of filtering and stabilizing voltage. The output end of the voltage stabilizer is a 3.3V output node, which provides a stable 3.3V direct current voltage for the circuit board.

[0035] As shown in Figures 1-2As shown, the main control module includes a main control chip, the model of the main control chip is ESP32, the first pin of the main control chip is grounded, the second pin of the main control chip is connected with 3.3V output node, and is grounded through capacitor C6 and capacitor C7 respectively, the second pin of the main control chip is also connected with resistor R2, one end of the resistor R2 away from the second pin of the main control chip is grounded through capacitor C8, the third pin of the main control chip is grounded through capacitor C8, the third pin of the main control chip is connected with switch SW2 through resistor R1, one end of the switch SW2 is connected with resistor R1, the other end of the switch SW2 is grounded, and the 23rd pin of the main control chip is connected with switch SW1. The third pin of the main control chip is an enable terminal, which can be controlled by the switch SW2. The main control chip is used for sending control pulse signal to control the driving control chip. The main control chip can be directly controlled by the switch to directly control the output of the control signal, so as to accurately control the working of the atomization piece.

[0036] As shown in Figure 4 As shown, the first pin of the driving control chip is connected with 5V input and grounded through capacitor C10, the fourth pin of the control chip A1 is connected with the 31st pin of the main control chip to receive the control instruction of the main control chip. The atomization piece driving module includes field effect tube M1, triangular inductor L1 and connection terminal D2, the model of the field effect tube is NCE6003, the gate of the field effect tube M1 is connected with the fifth pin of the driving control chip through resistor R4 and grounded through resistor R6, the fifth pin of the driving control chip is a PWM pulse signal output pin, and the field effect tube M1 is controlled by the PWM pulse signal. The drain of the field effect tube M1 is connected with the VCC pin of the connection terminal D2, and the source of the field effect tube is grounded. The model of the triangular inductor L1 is UPA10200, the first pin of the triangular inductor L1 is connected with the drain of the field effect tube M1, the second pin of the triangular inductor L1 is connected with 5V input through resistor RS1, and the third pin of the triangular inductor L1 is connected with the GND pin of the connection terminal D2. The VCC pin of the connection terminal D2 is connected with the GND pin through capacitor C9. The second pin of the triangular inductor L1 is grounded through capacitor C12 and capacitor C13 respectively, and is connected with resistor R3 and resistor R5 through resistor R3, one end of the resistor R3 is connected with the triangular inductor L1, the other end of the resistor R3 is connected with one end of the resistor R5, the other end of the resistor R5 is grounded, and the node connected with the resistor R3 and the resistor R5 is connected with the seventh pin of the driving control chip A1 as a feedback signal node of the driving control chip A1. The connection terminal D2 is connected with the atomization piece. The control instruction is sent by the main control chip, the driving control chip receives the control instruction and generates control pulse signal, the field effect tube M1 is controlled by the pulse signal, and the oscillation signal is generated by combining the triangular inductor and the capacitor to drive the atomization piece to work.

[0037] As shown in Figure 5As shown, in the embodiment, the circuit further comprises an external terminal P1, an external terminal P2, an external terminal P3 and an external terminal P4, all of which are connected with the master control chip, the external terminal P1 and the external terminal P3 are three-pin terminals, the external terminal P2 is a four-pin terminal, and the external terminal P4 is a six-pin terminal. Specifically, the first pin of the external terminal P1 is grounded, the second pin of the external terminal P1 is connected with the sixth pin of the master control chip, and the third pin of the external terminal is connected with a 5V input. The first pin of the external terminal P2 is connected with the eighth pin of the master control chip, the second pin of the external terminal P2 is connected with the ninth pin of the master control chip, the third pin of the external terminal P2 is connected with a 3.3V output node, and the fourth pin of the external terminal P2 is grounded. The first pin of the external terminal P3 is grounded, the second pin of the external terminal P3 is connected with the thirty-third pin of the master control chip, and the third pin of the external terminal P3 is connected with a 5V input. The first pin of the external terminal P4 is connected with the third pin of the master control chip, the second pin of the external terminal P4 is connected with the twenty-fifth pin of the master control chip, the third pin of the external terminal P4 is connected with the thirty-fourth pin of the master control chip, the fourth pin of the external terminal P4 is connected with the thirty-fifth pin of the master control chip, the fifth pin of the external terminal P4 is connected with a 3.3V output node, and the sixth pin of the external terminal P4 is grounded. The external terminal P1, the external terminal P2, the external terminal P3 and the external terminal P4 are all expansion terminals, which can be used to connect a display screen and various sensors such as a temperature and humidity sensor, thereby increasing the functions of the circuit.

[0038] Of course, the present application can have other various embodiments, and based on the embodiments, other embodiments obtained by those skilled in the art without any creative labor fall within the scope of the present application.

Claims

1. An atomizing piece driving circuit, characterized by, The power module, the main control chip, the drive control chip and the atomization piece drive module are included. The power module is electrically connected with the main control chip, the drive control chip and the atomization piece drive module respectively. The main control chip is electrically connected with the drive control chip. The drive control chip is electrically connected with the atomization piece drive module. The power module is used for providing power supply; and the atomization piece drive module is used for providing an oscillation signal to drive the atomization piece.

2. The atomizer sheet driving circuit according to claim 1, characterized in that, The power module includes a voltage stabilizer, an input end of the voltage stabilizer is connected with a 5V input, and is grounded through a capacitor C1 and a capacitor C2 respectively, an output end of the voltage stabilizer is grounded through a capacitor C3 and a capacitor C4 respectively, and the output end of the voltage stabilizer is a 3.3V output node.

3. The atomizer sheet driving circuit according to claim 2, characterized by, A second pin of the main control chip is connected with the 3.3V output node, a third pin of the main control chip is grounded through a capacitor C8, the third pin of the main control chip is connected with a switch SW2 through a resistor R1, one end of the switch SW2 is connected with the resistor R1, the other end of the switch SW2 is grounded, and a twenty-third pin of the main control chip is connected with a switch SW1.

4. The atomizer sheet driving circuit according to claim 3, characterized by, A first pin of the drive control chip is connected with the 5V input, a fourth pin of the drive control chip is connected with a thirty-first pin of the main control chip, and a fifth pin of the drive control chip is electrically connected with the atomization piece drive module.

5. The atomizer sheet driving circuit according to claim 4, characterized in that, The atomization piece drive module includes a field effect transistor M1, a triangular inductor L1 and a connection terminal D2, a gate of the field effect transistor M1 is connected with the fifth pin of the control chip through a resistor R4, a drain of the field effect transistor M1 is connected with the connection terminal D2, a source of the field effect transistor M1 is grounded, a first pin of the triangular inductor L1 is connected with the drain of the field effect transistor M1, a second pin of the triangular inductor L1 is connected with the 5V input through a resistor RS1, and a third pin of the triangular inductor L1 is connected with the connection terminal D2.

6. The atomizer sheet driving circuit of claim 1, wherein, The external terminals P1, P2, P3 and P4 are all connected with the main control chip, the external terminals P1 and P3 are three-pin terminals, the external terminal P2 is a four-pin terminal, and the external terminal P4 is a six-pin terminal.

7. The atomizer sheet driving circuit according to claim 6, characterized in that, A first pin of the external terminal P1 is grounded, a second pin of the external terminal P1 is connected with a sixth pin of the main control chip, and a third pin of the external terminal is connected with the 5V input.

8. The atomizer sheet driving circuit according to claim 6, characterized in that, A first pin of the external terminal P2 is connected with an eighth pin of the main control chip, a second pin of the external terminal P2 is connected with a ninth pin of the main control chip, a third pin of the external terminal P2 is connected with the 3.3V output node, and a fourth pin of the external terminal P2 is grounded.

9. The atomizer sheet driving circuit according to claim 6, characterized in that, A first pin of the external terminal P3 is grounded, a second pin of the external terminal P3 is connected with a thirty-third pin of the main control chip, and a third pin of the external terminal P3 is connected with the 5V input.

10. The atomizer sheet driving circuit of claim 6, wherein, The first pin of the external connection terminal P4 is connected with the third pin of the master control chip, the second pin of the external connection terminal P4 is connected with the twenty-fifth pin of the master control chip, the third pin of the external connection terminal P4 is connected with the thirty-fourth pin of the master control chip, the fourth pin of the external connection terminal P4 is connected with the thirty-fifth pin of the master control chip, the fifth pin of the external connection terminal P4 is connected with the 3.3V output node, and the sixth pin of the external connection terminal P4 is grounded.

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