Circuit for switching atomizer through switch

Abstract

The utility model relates to the technical field of atomization equipment, in particular to a circuit for switching an atomizer through a switch. The system comprises an MCU controller, a control switch, an atomization output circuit and an atomization starting circuit, the MCU controller is connected with the control switch and detects an input instruction of the control switch, the MCU controller is connected with the atomization starting circuit and detects an output level of the atomization starting circuit, and the MCU controller is connected with the atomization output circuit and outputs a PWM pulse to drive the atomization output circuit to work. The control switch is a microelectronic touch switch or a microelectronic Hall switch. According to the utility model, the traditional mechanical switch device is abandoned, the micro-electronic touch switch or the micro-electronic Hall switch is used for free switching, and the problem of function failure caused by short service life and poor contact of machinery is solved because no mechanical device is adopted and an electromagnetic induction electronic device is adopted; the application scene of function failure caused by the reliability problem of a mechanical device is well solved, and the device has the use potential of replacing a mechanical switch device.

Description

Technical Field

[0001] The utility model relates to the technical field of atomization equipment, in particular to a circuit for switching an atomizer. Background Art

[0002] Electronic atomizer is a low-voltage micro-electronic atomization device that generates current through a rechargeable lithium battery to atomize the e-liquid in the atomizer to simulate smoke. Electronic atomizers produce less harmful substances after combustion and are popular among merchants and consumers.

[0003] As the electronic atomizer market continues to expand, users have put forward various new demands for the variety and innovation of electronic atomizers. The current single-flavor electronic atomizers can no longer meet user needs, and electronic atomizers with multiple flavors that can be switched freely have also appeared on the market. In order to meet market demand, various multi-flavor electronic cigarettes are emerging in an endless stream.

[0004] Currently, most of the electronic vaporizers on the market use mechanical switch devices to switch between multiple flavors. Since this type of electronic vaporizer uses mechanical switches to switch, it is prone to problems such as poor contact and short working life, which can lead to functional failure. Utility Model Content

[0005] The utility model provides a circuit for switching an atomizer by a switch, aiming to solve the problems of poor contact and short working life caused by the existing electronic atomizer switching multiple flavors by mechanical devices.

[0006] The utility model provides a circuit for switching an atomizer with a switch, comprising an MCU controller, a control switch, an atomization output circuit, and an atomization start circuit. The MCU controller is connected to the control switch and detects an input instruction of the control switch, the MCU controller is connected to the atomization start circuit and detects an output level of the atomization start circuit, the MCU controller is connected to the atomization output circuit and outputs a PWM pulse to drive the atomization output circuit to work, and the control switch is a microelectronic touch switch or a microelectronic Hall switch.

[0007] As a further improvement of the present utility model, when the control switch is a microelectronic touch switch, the microelectronic touch switch includes a chip U4, a sensing switch K1, a sensing switch K2, and a sensing switch K3. The sensing switches K1, K2, and K3 are respectively connected to the 1st, 8th, and 7th pins of the chip U4, and the D0_INPUT pin and D1_INPUT pin of the chip U4 are respectively connected to the IO pins of the MCU controller.

[0008] As a further improvement of the utility model, the atomization output circuit includes a MOS tube Q2, resistors R20, R22, and R23, the gate of the MOS tube Q2 is respectively connected to one end of the resistor R22 and the resistor R23, the source of the MOS tube Q2 is connected to the other end of the resistor R23, the drain of the MOS tube Q2 is respectively connected to one end of the resistor R20 and the CHECK_HT2 pin of the MCU controller, the other end of the resistor R22 is connected to the HEAT2 pin of the MCU controller, and the other end of the resistor R20 is grounded;

[0009] It also includes a MOS tube Q3, resistors R19, R21, and R24. The gate of the MOS tube Q3 is connected to one end of the resistor R21 and the resistor R24 ​​respectively, the source of the MOS tube Q3 is connected to the other end of the resistor R24, the drain of the MOS tube Q3 is connected to one end of the resistor R19 and the CHECK_HT1 pin of the MCU controller respectively, the other end of the resistor R21 is connected to the HEAT1 pin of the MCU controller, and the other end of the resistor R19 is grounded.

[0010] As a further improvement of the utility model, when the control switch is a microelectronic Hall switch, the microelectronic Hall switch includes Hall switches U14, U15, U16, and U17, and the output pin HL1 of the Hall switch U14, the output pin HL2 of the Hall switch U15, the output pin HL3 of the Hall switch U16, and the output pin HL4 of the Hall switch U17 are respectively connected to the IO pins of the MCU controller.

[0011] As a further improvement of the utility model, the atomization output circuit includes a MOS tube Q2, resistors R20, R22, and R23, the gate of the MOS tube Q2 is respectively connected to one end of the resistor R22 and the resistor R23, the source of the MOS tube Q2 is connected to the other end of the resistor R23, the drain of the MOS tube Q2 is respectively connected to one end of the resistor R20 and the TCK pin of the MCU controller, the other end of the resistor R22 is connected to the HEAT2 pin of the MCU controller, and the other end of the resistor R20 is grounded;

[0012] It also includes a MOS tube Q3, resistors R19, R21, and R24, wherein the gate of the MOS tube Q3 is connected to one end of the resistor R21 and the resistor R24 ​​respectively, the source of the MOS tube Q3 is connected to the other end of the resistor R24, the drain of the MOS tube Q3 is connected to one end of the resistor R19 and the TMS pin of the MCU controller respectively, the other end of the resistor R21 is connected to the HEAT1 pin of the MCU controller, and the other end of the resistor R19 is grounded;

[0013] It also includes a MOS tube Q4, resistors R30, R27, and R28, wherein the gate of the MOS tube Q4 is connected to one end of the resistor R27 and the resistor R28 respectively, the source of the MOS tube Q4 is connected to the other end of the resistor R28, the drain of the MOS tube Q4 is connected to one end of the resistor R30 and the TDI pin of the MCU controller respectively, the other end of the resistor R27 is connected to the HEAT4 pin of the MCU controller, and the other end of the resistor R30 is grounded;

[0014] It also includes a MOS tube Q5, resistors R31, R26, and R29. The gate of the MOS tube Q5 is connected to one end of the resistor R26 and the resistor R29 respectively, the source of the MOS tube Q5 is connected to the other end of the resistor R29, the drain of the MOS tube Q5 is connected to one end of the resistor R31 and the TDO pin of the MCU controller respectively, the other end of the resistor R26 is connected to the HEAT3 pin of the MCU controller, and the other end of the resistor R31 is grounded.

[0015] As a further improvement of the present invention, the atomization start circuit includes an air start switch U1 for detecting airflow passing therethrough, and the MIC_INPUT pin of the air start switch U1 is connected to the MIC_INPUT pin of the MCU controller.

[0016] As a further improvement of the utility model, the circuit for switching the atomizer on and off also includes a charging circuit, which is connected to the MCU controller. The charging circuit includes a USB1 interface, a charging IC chip U2, resistors R5, R6, R7, R8, and a capacitor C4. The B9 pin of the USB1 interface is connected to the 4th pin of the charging IC chip U2, the A9 pin of the USB1 interface is connected to one end of the resistor R5, and the other end of the resistor R5 is respectively connected to one end of the resistor R6 and the CHRG pin of the MCU controller, the 1st pin of the charging IC chip U2 is connected to the FULL pin of the MCU controller, the 3rd pin of the charging IC chip U2 is connected to one end of the resistor R7, and the other end of the resistor R7 is respectively connected to the resistor R8, one end of the capacitor C4, and the BA_V pin of the MCU controller, and the other ends of the resistors R6, R8, and the capacitor C4 are all grounded.

[0017] As a further improvement of the utility model, the circuit for switching the atomizer also includes an LED display circuit, which includes multiple groups of three-color light emitting diodes. The multiple groups of three-color light emitting diodes are connected in parallel to pins 15, 16, and 17 of the MCU controller.

[0018] As a further improvement of the utility model, the circuit for switching the atomizer also includes a power selection switch SW1, and the power selection switch SW1 is connected to the MCU controller, and outputs a low level when the power selection switch SW1 is pressed.

[0019] The beneficial effects of the utility model are: abandoning the traditional mechanical switch device and replacing it with a microelectronic touch switch or a microelectronic Hall switch for free switching. Since there is no mechanical device but an electromagnetic induction electronic device, the problem of mechanical life interruption and functional failure caused by poor contact is solved; it is a good solution to the application scenario where functional failure is caused by the reliability problem of the mechanical device, and has the potential to replace the mechanical switch device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural topological diagram of the switch switching atomizer circuit of the utility model;

[0021] Figure 2 This is a circuit diagram of an MCU controller when the control switch of the utility model is a microelectronic touch switch;

[0022] Figure 3 This is the circuit diagram of the microelectronic touch switch of the utility model;

[0023] Figure 4 This is a structural diagram of the atomization output circuit when the control switch of the utility model is a microelectronic touch switch;

[0024] Figure 5 This is a circuit diagram of an MCU controller when the control switch of the utility model is a microelectronic Hall switch;

[0025] Figure 6 It is the circuit diagram of the microelectronic Hall switch of the utility model;

[0026] Figure 7 This is a structural diagram of the atomization output circuit when the control switch of the utility model is a microelectronic Hall switch;

[0027] Figure 8 It is a structural diagram of the atomization starting circuit of the utility model;

[0028] Fig. 9 It is a structural diagram of the charging circuit of the utility model;

[0029] Fig.10 It is a structural diagram of the LED display circuit of the utility model. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] Embodiment 1:

[0032] like Figures 1 to 4As shown, the circuit for switching the atomizer by the switch includes an MCU controller, a microelectronic touch switch as the control switch, an atomization output circuit, and an atomization start circuit. The MCU controller detects the input instruction of the microelectronic touch switch, and the MCU detects the level of the air start switch in the atomization start circuit, and controls the corresponding atomization output circuit to output PWM pulses to drive the atomization output circuit to work according to the input instruction of the microelectronic touch switch.

[0033] like Figure 2 As shown, the MCU controller controls the working state of the LED display device of the display circuit according to the input instruction of the microelectronic touch switch and the atomization start circuit, and the MCU controller outputs the PWM pulse of the corresponding working mode to drive the ultrasonic atomization device to work. The MCU controller is mainly composed of chip U3.

[0034] like Figure 3 As shown, the microelectronic touch switch includes a chip U4, a sensor switch K1, a sensor switch K2, and a sensor switch K3. The sensor switches K1, K2, and K3 are connected to the 1st, 8th, and 7th pins of the chip U4, respectively. The D0_INPUT pin and the D1_INPUT pin of the chip U4 are connected to the IO pins of the MCU controller, respectively. Here, the IO pins of the MCU controller correspond to the D0_INPUT pin and the D1_INPUT pin of the chip U3.

[0035] Corresponding to the microelectronic touch switch, the atomization output circuit includes two flavor atomization circuits. When the MCU controller detects the low level of the atomization start circuit, the MCU controller controls the opening and closing of MOS tubes Q3 and Q2 according to the logic instructions of the microelectronic touch switch and switches to the corresponding atomization device.

[0036] Specific as Figure 4 As shown, the atomization circuit of the first flavor includes a MOS tube Q2, resistors R20, R22, and R23. The gate of the MOS tube Q2 is connected to one end of the resistor R22 and the resistor R23 respectively, the source of the MOS tube Q2 is connected to the other end of the resistor R23, the drain of the MOS tube Q2 is connected to one end of the resistor R20 and the CHECK_HT2 pin of the MCU controller respectively, the other end of the resistor R22 is connected to the HEAT2 pin of the MCU controller, and the other end of the resistor R20 is grounded.

[0037] The atomization circuit for the second flavor includes a MOS tube Q3, resistors R19, R21, and R24. The gate of the MOS tube Q3 is connected to one end of the resistor R21 and the resistor R24 ​​respectively, the source of the MOS tube Q3 is connected to the other end of the resistor R24, the drain of the MOS tube Q3 is connected to one end of the resistor R19 and the CHECK_HT1 pin of the MCU controller respectively, the other end of the resistor R21 is connected to the HEAT1 pin of the MCU controller, and the other end of the resistor R19 is grounded.

[0038] The microelectronic touch switch is composed of chip U4 integrated circuit. When the induction switches K1, K2, and K3 sense contact, the D0_INPUT and D1_INPUT of chip U4 output levels, and the IO pin of the MCU controller detects a low-level change and determines that there is an input command input. According to the touch status of the induction switches K1, K2, and K3, the corresponding atomization circuit working mode is switched.

[0039] When the induction switch K1 senses a touch, the DO_INPUT pin outputs a low level, and the D1_INPUT outputs a high level. The MOS tube Q2 starts working alone, starting the atomization circuit of the first flavor.

[0040] When the induction switch K2 senses a touch, the DO_INPUT pin outputs a high level and the D1_INPUT outputs a low level. The MOS tube Q3 starts working alone, starting the atomization circuit of the first flavor.

[0041] When the induction switch K3 senses a touch, the DO_INPUT pin outputs a low level, and the D1_INPUT outputs a low level. The MOS tubes Q2 and Q3 simultaneously start the atomization circuits of the two flavors to achieve the mixed flavor function.

[0042] Embodiment 2:

[0043] like Figure 1 , 5 As shown in Figure 7, the circuit for switching the atomizer includes an MCU controller, a microelectronic Hall switch as the control switch, an atomization output circuit, and an atomization start circuit. The MCU controller detects the input instruction of the microelectronic Hall switch, and the MCU detects the level of the air start switch in the atomization start circuit, and controls the corresponding atomization output circuit to output PWM pulses to drive the atomization output circuit to work according to the input instruction of the microelectronic Hall switch.

[0044] like Figure 5 As shown, the MCU controller detects the microelectronic Hall switch input instruction and the atomization start circuit, controls the working state of the LED display device of the display circuit, and outputs the PWM pulse of the corresponding working mode to drive the atomization output circuit to work. The MCU controller is mainly composed of chip U3.

[0045] like Figure 6 As shown, the microelectronic Hall switch includes Hall switches U14, U15, U16, and U17, and the output pin HL1 of the Hall switch U14, the output pin HL2 of the Hall switch U15, the output pin HL3 of the Hall switch U16, and the output pin HL4 of the Hall switch U17 are respectively connected to the IO pins of the MCU controller. Here, the IO pins of the MCU controller correspond to the HL1 pin, HL2 pin, HL3 pin, and HL4 pin of the chip U3.

[0046] Corresponding to the microelectronic Hall switch, the atomization output circuit includes four flavors of atomization circuits. When the MCU controller detects the low level of the atomization start circuit, the MCU controller controls the opening and closing of MOS tubes Q2, Q3, Q4, and Q5 according to the logic instructions of the microelectronic Hall switch, and switches to the corresponding atomization device.

[0047] Specific as Figure 7 As shown, the atomization circuit of the first flavor includes a MOS tube Q2, resistors R20, R22, and R23. The gate of the MOS tube Q2 is connected to one end of the resistor R22 and the resistor R23 respectively, the source of the MOS tube Q2 is connected to the other end of the resistor R23, the drain of the MOS tube Q2 is connected to one end of the resistor R20 and the TCK pin of the MCU controller respectively, the other end of the resistor R22 is connected to the HEAT2 pin of the MCU controller, and the other end of the resistor R20 is grounded.

[0048] The atomization circuit for the second flavor includes a MOS tube Q3, resistors R19, R21, and R24. The gate of the MOS tube Q3 is connected to one end of the resistor R21 and the resistor R24 ​​respectively, the source of the MOS tube Q3 is connected to the other end of the resistor R24, the drain of the MOS tube Q3 is connected to one end of the resistor R19 and the TMS pin of the MCU controller respectively, the other end of the resistor R21 is connected to the HEAT1 pin of the MCU controller, and the other end of the resistor R19 is grounded.

[0049] The atomization circuit of the third flavor includes a MOS tube Q4, resistors R30, R27, and R28. The gate of the MOS tube Q4 is connected to one end of the resistor R27 and the resistor R28 respectively, the source of the MOS tube Q4 is connected to the other end of the resistor R28, the drain of the MOS tube Q4 is connected to one end of the resistor R30 and the TDI pin of the MCU controller respectively, the other end of the resistor R27 is connected to the HEAT4 pin of the MCU controller, and the other end of the resistor R30 is grounded.

[0050] The atomization circuit for the fourth flavor includes a MOS tube Q5, resistors R31, R26, and R29. The gate of the MOS tube Q5 is connected to one end of the resistor R26 and the resistor R29 respectively, the source of the MOS tube Q5 is connected to the other end of the resistor R29, the drain of the MOS tube Q5 is connected to one end of the resistor R31 and the TDO pin of the MCU controller respectively, the other end of the resistor R26 is connected to the HEAT3 pin of the MCU controller, and the other end of the resistor R31 is grounded.

[0051] It is composed of microelectronic Hall switch integrated circuits U14, U15, U16, and U17. When an electromagnet approaches the Hall switch, the corresponding Hall starts to output a low level. The IO pin of the MCU controller detects the low level and determines that there is an input instruction. It switches to the corresponding atomization circuit working mode according to the status of the output pins HL1, HL2, HL3, and HL4.

[0052] When the Hall switch U14 detects the electromagnet, the output pin HL1 outputs a low level, switching the MOS tube Q2 to work on the corresponding flavor atomizer;

[0053] When the Hall switch U15 detects the electromagnet, the output pin HL2 outputs a low level, switching the MOS tube Q3 to work on the corresponding flavor atomizer;

[0054] When the Hall switch U16 detects the electromagnet, the output pin HL3 outputs a low level, switching the MOS tube Q4 to work on the atomizer of the corresponding flavor;

[0055] When the Hall switch U17 detects the electromagnet, the output pin HL4 outputs a low level, switching the MOS tube Q5 to operate the atomizer of the corresponding flavor.

[0056] Embodiment three:

[0057] Based on Example 1 and Example 2, the circuit for switching the atomizer also includes an LED display circuit. The MCU controller detects the input instructions of the microelectronic touch switch or the microelectronic Hall switch and controls the working state of the LED display device of the LED display circuit.

[0058] like Fig.10 As shown, the LED display circuit includes multiple groups of three-color light-emitting diodes, which are connected in parallel to the 15th, 16th and 17th pins of the MCU controller. The display circuit is composed of three-color light-emitting diodes L1, L2, L3, L4, L5 and L6. When the MCU controller detects that the atomization start circuit starts working, the LED display circuit will start working to indicate the working status of the electronic cigarette.

[0059] Embodiment 4:

[0060] Based on Example 1 and Example 2, Figure 8 As shown, the atomization start circuit includes an air start switch U1 for detecting airflow passing through, and the first pin of the air start switch U1 is connected to the MIC_INPUT pin of the MCU controller.

[0061] When the control switch is a microelectronic touch switch, when the air start switch U1 detects airflow, the MIC_INPUT pin outputs a low level. After the MCU controller receives the MIC_INPUT low level signal, the MCU controller outputs the corresponding PWM pulse to control the operation of the MOS tubes Q2 and Q3 controlled by the microelectronic touch switch logic.

[0062] When the control switch is a microelectronic Hall switch, when the air start switch U1 detects airflow, the MIC_INPUT pin outputs a low level. After the MCU controller receives the MIC_INPUT low level signal, the MCU controller outputs the corresponding PWM pulse to control the operation of the MOS tubes Q2, Q3, Q4, and Q5 controlled by the microelectronic Hall switch logic.

[0063] Embodiment five:

[0064] Based on Example 1 and Example 2, Fig. 9 As shown, the circuit for switching the atomizer by the switch also includes a charging circuit, which is connected to the MCU controller. The charging circuit includes a USB1 interface, a charging IC chip U2, resistors R5, R6, R7, R8, and a capacitor C4. The B9 pin of the USB1 interface is connected to the 4th pin of the charging IC chip U2, the A9 pin of the USB1 interface is connected to one end of the resistor R5, and the other end of the resistor R5 is respectively connected to one end of the resistor R6 and the CHRG pin of the MCU controller, the 1st pin of the charging IC chip U2 is connected to the FULL pin of the MCU controller, the 3rd pin of the charging IC chip U2 is connected to one end of the resistor R7, and the other end of the resistor R7 is respectively connected to the resistor R8, one end of the capacitor C4, and the BA_V pin of the MCU controller, and the other ends of the resistors R6, R8, and the capacitor C4 are all grounded.

[0065] The battery charging circuit consists of a USB1 interface and a charging IC chip U2. When the device detects that the battery is low, the LED status indicates that charging is required.

[0066] Embodiment six:

[0067] On the basis of the first and second embodiments, the circuit for switching the atomizer by the switch further includes a power selection switch SW1, which is connected to the MCU controller and outputs a low level when the power selection switch SW1 is pressed. The power output selection is composed of the switch SW1, which outputs a low level when the power selection switch SW1 is pressed. After the MCU detects the low-level key command of the power selection switch SW1, the MCU switches the pulse width of the PWM of the atomization output circuit so that the atomization output circuit outputs different powers.

[0068] The utility model abandons the traditional mechanical switch device and replaces it with a microelectronic touch switch or a microelectronic Hall switch for free switching. Since there is no mechanical device but an electromagnetic induction microelectronic touch switch or a Hall electronic device, the problem of mechanical life being short and poor contact causing functional failure is solved. The utility model solves the application scenario of functional failure caused by reliability problems of mechanical devices very well, and has the potential to replace mechanical switch devices.

[0069] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A circuit for switching an atomizer, characterized in that: It includes an MCU controller, a control switch, an atomization output circuit, and an atomization start circuit. The MCU controller is connected to the control switch and detects the input instruction of the control switch. The MCU controller is connected to the atomization start circuit and detects the output level of the atomization start circuit. The MCU controller is connected to the atomization output circuit and outputs PWM pulses to drive the atomization output circuit to work. The control switch is a microelectronic touch switch or a microelectronic Hall switch.

2. The circuit for switching the atomizer according to claim 1, characterized in that: When the control switch is a microelectronic touch switch, the microelectronic touch switch includes a chip U4, a sensing switch K1, a sensing switch K2, and a sensing switch K3. The sensing switches K1, K2, and K3 are respectively connected to the 1st, 8th, and 7th pins of the chip U4. The D0_INPUT pin and the D1_INPUT pin of the chip U4 are respectively connected to the IO pins of the MCU controller.

3. The circuit for switching the atomizer according to claim 2, characterized in that: The atomization output circuit includes a MOS tube Q2, resistors R20, R22, and R23. The gate of the MOS tube Q2 is connected to one end of the resistor R22 and the resistor R23 respectively, the source of the MOS tube Q2 is connected to the other end of the resistor R23, the drain of the MOS tube Q2 is connected to one end of the resistor R20 and the CHECK_HT2 pin of the MCU controller respectively, the other end of the resistor R22 is connected to the HEAT2 pin of the MCU controller, and the other end of the resistor R20 is grounded; It also includes a MOS tube Q3, resistors R19, R21, and R24. The gate of the MOS tube Q3 is connected to one end of the resistor R21 and the resistor R24 ​​respectively, the source of the MOS tube Q3 is connected to the other end of the resistor R24, the drain of the MOS tube Q3 is connected to one end of the resistor R19 and the CHECK_HT1 pin of the MCU controller respectively, the other end of the resistor R21 is connected to the HEAT1 pin of the MCU controller, and the other end of the resistor R19 is grounded.

4. The circuit for switching the atomizer according to claim 1, characterized in that: When the control switch is a microelectronic Hall switch, the microelectronic Hall switch includes Hall switches U14, U15, U16, and U17, and the output pin HL1 of the Hall switch U14, the output pin HL2 of the Hall switch U15, the output pin HL3 of the Hall switch U16, and the output pin HL4 of the Hall switch U17 are respectively connected to the IO pins of the MCU controller.

5. The circuit for switching the atomizer according to claim 4, characterized in that: The atomization output circuit includes a MOS tube Q2, resistors R20, R22, and R23. The gate of the MOS tube Q2 is connected to one end of the resistor R22 and the resistor R23 respectively, the source of the MOS tube Q2 is connected to the other end of the resistor R23, the drain of the MOS tube Q2 is connected to one end of the resistor R20 and the TCK pin of the MCU controller respectively, the other end of the resistor R22 is connected to the HEAT2 pin of the MCU controller, and the other end of the resistor R20 is grounded; It also includes a MOS tube Q3, resistors R19, R21, and R24, wherein the gate of the MOS tube Q3 is connected to one end of the resistor R21 and the resistor R24 ​​respectively, the source of the MOS tube Q3 is connected to the other end of the resistor R24, the drain of the MOS tube Q3 is connected to one end of the resistor R19 and the TMS pin of the MCU controller respectively, the other end of the resistor R21 is connected to the HEAT1 pin of the MCU controller, and the other end of the resistor R19 is grounded; It also includes a MOS tube Q4, resistors R30, R27, and R28, wherein the gate of the MOS tube Q4 is connected to one end of the resistor R27 and the resistor R28 respectively, the source of the MOS tube Q4 is connected to the other end of the resistor R28, the drain of the MOS tube Q4 is connected to one end of the resistor R30 and the TDI pin of the MCU controller respectively, the other end of the resistor R27 is connected to the HEAT4 pin of the MCU controller, and the other end of the resistor R30 is grounded; It also includes a MOS tube Q5, resistors R31, R26, and R29. The gate of the MOS tube Q5 is connected to one end of the resistor R26 and the resistor R29 respectively, the source of the MOS tube Q5 is connected to the other end of the resistor R29, the drain of the MOS tube Q5 is connected to one end of the resistor R31 and the TDO pin of the MCU controller respectively, the other end of the resistor R26 is connected to the HEAT3 pin of the MCU controller, and the other end of the resistor R31 is grounded.

6. The circuit for switching the atomizer according to claim 1, characterized in that: The atomization start circuit includes an air start switch U1 for detecting airflow passing through, and the first pin of the air start switch U1 is connected to the MIC_INPUT pin of the MCU controller.

7. The circuit for switching the atomizer according to claim 1, characterized in that: It also includes a charging circuit, which is connected to the MCU controller. The charging circuit includes a USB1 interface, a charging IC chip U2, resistors R5, R6, R7, R8, and a capacitor C4. The B9 pin of the USB1 interface is connected to the 4th pin of the charging IC chip U2, the A9 pin of the USB1 interface is connected to one end of the resistor R5, and the other end of the resistor R5 is respectively connected to one end of the resistor R6 and the CHRG pin of the MCU controller, the 1st pin of the charging IC chip U2 is connected to the FULL pin of the MCU controller, the 3rd pin of the charging IC chip U2 is connected to one end of the resistor R7, and the other end of the resistor R7 is respectively connected to the resistor R8, one end of the capacitor C4, and the BA_V pin of the MCU controller, and the other ends of the resistors R6, R8, and capacitor C4 are all grounded.

8. The circuit for switching the atomizer according to claim 1, characterized in that: It also includes an LED display circuit, which includes multiple groups of three-color light emitting diodes. The multiple groups of three-color light emitting diodes are connected in parallel to the 15th, 16th and 17th pins of the MCU controller.

9. The circuit for switching the atomizer according to claim 1, characterized in that: It also includes a power selection switch SW1, which is connected to the MCU controller and outputs a low level when the power selection switch SW1 is pressed.

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