Hardware reset circuit and aerosol generating device

Abstract

The utility model discloses a hardware reset circuit and an aerosol generating device, and relates to the technical field of power-off reset. The hardware reset circuit comprises a switching module and a reset module, the switching module comprises an idle state and a working state, and the reset module comprises a first switch unit, a delay discharge unit and a second switch unit. The control end of the first switch unit is used for connecting the switching module, the first end of the first switch unit is connected with input voltage, and the second end of the first switch unit is connected with the delay discharge unit. The control end of the second switch unit is connected with the delay discharge unit, the first end of the second switch unit is connected with input voltage, and the second end of the second switch unit is externally connected with a control module; in an idle state, the time-delay discharge unit enables the second switch unit to be conducted in a time-delay manner; in a working state, the delay discharge unit maintains the second switch unit to be conducted; when the working state is switched to the idle state, the time-delay discharging unit turns off the second switch unit while the first switch unit is turned on, and then turns on the second switch unit in a time-delay manner.

Description

Technical Field

[0001] This application relates to the field of power failure reset technology, specifically to a hardware reset circuit and an aerosol generating device. Background Technology

[0002] Current aerosol generators have built-in, non-removable batteries, making it impossible for users to physically disconnect and reset them during daily use. Because the aerosol generator is always powered on, prolonged use or exposure to complex, high-interference environments can cause the main control chip to malfunction, leading to a system crash and inoperability. Such failures not only impact user experience but also increase after-sales maintenance costs and reduce the product's market competitiveness. Utility Model Content

[0003] This application provides a simple hardware reset circuit and an aerosol generating device equipped with the circuit.

[0004] According to one aspect of this application, one embodiment provides a hardware reset circuit, comprising:

[0005] A switching module is used to adjust the heating mode of the aerosol matrix. The switching module includes an idle state and a working state.

[0006] A reset module, comprising a first switching unit, a time-delayed discharge unit, and a second switching unit;

[0007] The control terminal of the first switching unit is used to connect to the switching module. The first terminal of the first switching unit is connected to the input voltage, and the second terminal of the first switching unit is connected to the delayed discharge unit. When the switching module is in an idle state, the first switching unit is turned on. When the switching module is in a working state, the first switching unit is turned off. When the switching module switches from a working state to an idle state, the first switching unit is turned on after a delay.

[0008] The control terminal of the second switching unit is connected to the delayed discharge unit. The first terminal of the second switching unit is connected to the input voltage, and the second terminal of the second switching unit is externally connected to the control module. When the switching module is in an idle state, the delayed discharge unit causes the second switching unit to be turned on after a delay. When the switching module is in a working state, the delayed discharge unit keeps the second switching unit on. When the switching module switches from a working state to an idle state, the delayed discharge unit turns off the second switching unit while the first switching unit is turned on, and then turns the second switching unit on after a delay, so as to realize the power-on reset of the control module after power failure.

[0009] In one embodiment, the switching module includes a switching switch K1, which includes a switching terminal. The switching terminal can be triggered to switch to different contacts to adjust the heating mode of the aerosol matrix. When the switching terminal of the switching switch K1 is connected to a working contact, the switching module is in a working state. When the switching terminal of the switching switch K1 is connected to an idle contact, the switching module is in an idle state.

[0010] When the switching terminal of the switching switch K1 is connected to the idle contact, the base terminal of the switching switch K1 is at the first working level, and the first switching unit is turned on in response to the first working level.

[0011] When the switching terminal of the switching switch K1 is connected to the working contact, the base terminal of the switching switch K1 is at the second working level, and the first switching unit is turned off in response to the second working level.

[0012] When the switching terminal of the switching module K1 switches from connecting to the working contact to connecting to the idle contact, the base terminal of the switching switch K1 switches from the second working level to the first working level, and the first switching unit responds to the delayed discharge unit to conduct after a delay.

[0013] In one embodiment, the switching module further includes resistors R2 and R1;

[0014] The first terminal of the switch K1 is connected to the first terminal of the resistor R2, the second terminal of the resistor R2 is connected to the input voltage, the second terminal of the switch K1 is connected to the first terminal of the resistor R1, the second terminal of the resistor R1 is grounded, and the third terminal of the switch K1 is connected to the input voltage.

[0015] In one embodiment, the first switching unit includes a switching transistor Q1 and a resistor R3;

[0016] The first end of the switching transistor Q1 is connected to the first end of the first switching unit, the control end of the switching transistor Q1 is connected to the control end of the first switching unit, and the second end of the switching transistor Q1 is connected to the second end of the first switching unit; the first end of the resistor R3 is connected to the first end of the switching transistor Q1, and the second end of the resistor R3 is connected to the control end of the switching transistor Q1.

[0017] The switching transistor Q1 is turned on at the first operating level, turned off at the second operating level, and turned on after a delay when switching from the second operating level to the first operating level.

[0018] In one embodiment, the delayed discharge unit includes a first discharge unit and a second discharge unit;

[0019] The first discharge unit turns on the second switch unit after a delay when the first operating level is in the first operating level; the first discharge unit keeps the second switch unit on when the second operating level is in the second operating level; when the first discharge unit switches from the second operating level to the first operating level, it turns off the second switch unit while the first switch unit is on, and then turns on the second switch unit after a delay.

[0020] When the second operating level switches to the first operating level, the second discharge unit turns on the first switching unit after a delay.

[0021] In one embodiment, the first discharge unit includes a capacitor C2, a resistor R4, and a resistor R6;

[0022] The first end of capacitor C2 is connected to the second end of the first switching unit, the second end of capacitor C2 is connected to the control end of the second switching unit, the second end of capacitor C2 is also connected to the first end of resistor R6, the second end of resistor R6 is grounded, the first end of capacitor C2 is also connected to the first end of resistor R4, the second end of resistor R4 is grounded.

[0023] In one embodiment, the second discharge unit includes a capacitor C1, the first end of which is connected to the second end of the resistor R4, and the second end of which is connected to the control terminal of the first switching unit.

[0024] In one embodiment, the second switching unit includes a switching transistor Q2 and a resistor R5;

[0025] The first end of the switching transistor Q2 is connected to the first end of the second switching unit, the second end of the switching transistor Q2 is connected to the second end of the second switching unit, and the control end of the switching transistor Q2 is connected to the control end of the second switching unit; the first end of the resistor R5 is connected to the first end of the switching transistor Q2, and the second end of the resistor R5 is connected to the control end of the switching transistor Q2.

[0026] The switch Q2 is turned on after a delay at the first operating level, and the switch Q2 is kept on at the second operating level. When the switch Q2 switches from the second operating level to the first operating level, it is turned off after a delay and then turned on again after a delay.

[0027] In one embodiment, the hardware reset circuit further includes a connection resistor R7, the first end of which is connected to the switching module, and the second end of which is connected to the reset module.

[0028] According to another aspect of this application, one embodiment also provides an aerosol generating device, including a power supply battery, a hardware reset circuit, and a control module;

[0029] The power supply battery is used to output the input voltage;

[0030] The hardware reset circuit is connected to the power supply battery and the control module, and is used to reset the control module after power failure and power-on. The hardware reset circuit adopts the hardware reset circuit described in any of the above embodiments.

[0031] According to the hardware reset circuit and aerosol generating device of the above embodiments, the hardware reset circuit includes a switching module and a reset module. The switching module adjusts the heating module of the aerosol matrix to adapt to aerosol matrices of different lengths. The switching module includes an idle state and an operating state. The reset module includes a first switching unit, a delayed discharge module, and a second switching unit. The first switching unit is turned on in the idle state of the switching module and turned off in the operating state of the switching module. The first switching unit is turned on with a delay when the switching module switches from the operating state to the idle state. When the switching module is in the idle state, the delayed discharge unit causes the second switching unit to be turned on with a delay. When the switching module is in the operating state, the delayed discharge unit maintains the second switching unit on. When the switching module switches from the operating state to the idle state, the delayed discharge unit turns off the second switching unit while the first switching unit is turned on, and then turns on the second switching unit with a delay. This application utilizes the different states of the first switching unit under the switching module to enable the delayed discharge unit to charge and discharge under different states, thereby enabling the second switching unit to briefly power down and then reset and power on when the switching module switches from the working state to the idle state, thus realizing the power-down and power-on reset of the control module. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the hardware reset circuit in one embodiment;

[0033] Figure 2 This is a schematic diagram of the reset module in one embodiment;

[0034] Figure 3 This is a hardware circuit diagram of the switching module in one embodiment;

[0035] Figure 4 This is a hardware circuit diagram of the reset module in one embodiment;

[0036] Figure 5 This is a hardware circuit diagram showing the connection between the reset module and the switching module in one embodiment;

[0037] Figure 6 This is a schematic diagram of the aerosol generating device in another embodiment. Detailed Implementation

[0038] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0039] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0040] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0041] Please refer to Figure 1 One embodiment provides a hardware reset circuit 100 including a switching module 110 and a reset module 120. The switching module 110 is used to adjust the heating mode of the aerosol matrix to adapt to aerosol matrices of different lengths. The switching module 110 includes an idle state and a working state. The reset module 120 is used to connect an external control module, which is always powered on. If the program crashes due to some special circumstances, causing the aerosol generating device to malfunction, a way is needed to reset the control module and restore it to normal working state. This application uses a hardware reset circuit 100, which switches between working and idle states through the switching module 110, and uses the reset module 120 to briefly power down and then power on the control module. A detailed description follows.

[0042] Please refer to Figure 2 In one embodiment, the reset module 120 includes a first switching unit 121, a delayed discharge unit 122, and a second switching unit 123.

[0043] In one embodiment, the control terminal of the first switching unit 121 is connected to the switching module 110. The first terminal of the first switching unit 121 is connected to the input voltage, and the second terminal of the first switching unit 121 is connected to the delayed discharge unit 122. When the switching module 110 is in an idle state, the first switching unit 121 is turned on; when the switching module 110 is in an operating state, the first switching unit 121 is turned off; when the switching module 110 switches from an operating state to an idle state, the first switching unit 121 is turned on after a delay.

[0044] In one embodiment, the control terminal of the second switching unit 123 is connected to the delayed discharge unit 122, the first terminal of the second switching unit 123 is connected to the input voltage, and the second terminal of the second switching unit 123 is externally connected to the control module. When the switching module 110 is in an idle state, the delayed discharge unit 122 turns on the second switching unit 123 with a delay; when the switching module 110 is in an operating state, the delayed discharge unit 122 keeps the second switching unit 123 on; when the switching module 110 switches from an operating state to an idle state, the delayed discharge unit 122 turns off the second switching unit 123 while the first switching unit 121 is turned on, and then turns on the second switching unit 123 with a delay, so as to realize the power-on reset of the control module after power failure.

[0045] Please refer to Figure 3 In one embodiment, the switching module 110 includes a switching switch K1, which has a base terminal and a switching terminal. The switching terminal can be triggered to switch to different contacts to adjust the heating mode of the aerosol matrix. When the switching terminal of the switching switch K1 is connected to the working contact (i.e., the lever of the switching switch K1 is on the left or right), the switching module 110 is in the working state; when the switching terminal of the switching switch K1 is connected to the idle contact (i.e., the lever of the switching switch K1 is in the middle), the switching module 110 is in the idle state. When the switching terminal of the switching switch K1 is connected to the idle contact, the base terminal of the switching switch K1 is at a first working level (i.e., Figure 3 When the ADC output from port C of switch K1 is at the first operating level, the switching module 110 is in an idle state, and the first switching unit 121 is turned on in response to the first operating level. When the switching terminal of switch K1 is connected to the working contact, the base terminal of switch K1 is at the second operating level (i.e., Figure 3 When the ADC output from port C of the switching switch K1 is at the second operating level, the switching module 110 is in the working state, and the first switching unit 121 is turned off in response to the second operating level. When the switching terminal of the switching switch K1 switches from connecting to the idle contact to connecting to the working contact, the base terminal of the switching switch K1 switches from the second operating level to the first operating level, the switching module 110 switches from the working state to the idle state, and the first switching unit 121 is turned on after a delay in response to the delayed discharge unit 122.

[0046] In one embodiment, the switching module 110 further includes resistors R2 and R1. The first terminal of the switch K1 is connected to the first terminal of resistor R2, the second terminal of resistor R2 is connected to the input voltage, the second terminal of the switch K1 is connected to the first terminal of resistor R1, the second terminal of resistor R1 is grounded, and the third terminal of the switch K1 is connected to the input voltage. The fourth and fifth terminals of the switch K1 are grounded. When the switching terminal of the switch K1 is connected to the idle contact, the switching module 110 is in an idle state, i.e., the switch K1 is in the middle position, and the second terminal of the switch K1 outputs a first operating level. When the switching terminal of the switch K1 is connected to the operating contact, the switching module 110 is in an operating state, i.e., the switch K1 is on the left or right side, and the second terminal of the switch K1 outputs a second operating level.

[0047] Please refer to Figure 4 In one embodiment, the first switching unit 121 includes a switching transistor Q1 and a resistor R3, with the first terminal of the switching transistor Q1 connected to the first terminal of the first switching unit 121 (i.e., Figure 4 The first terminal of the switching transistor Q1 is connected to the input voltage B+, the control terminal of the switching transistor Q1 is connected to the control terminal of the first switching unit 121, and the second terminal of the switching transistor Q1 is connected to the second terminal of the first switching unit 121. The first terminal of the resistor R3 is connected to the first terminal of the switching transistor Q1, and the second terminal of the resistor R3 is connected to the control terminal of the switching transistor Q1. The switching transistor Q1 is turned on at the first operating level and turned off at the second operating level. When the switching transistor Q1 switches from the second operating level to the first operating level, it turns on after a delay.

[0048] In one embodiment, the delayed discharge unit 122 includes a first discharge unit 1221 and a second discharge unit 1222. Under a first operating level, the first discharge unit 1221 delays the conduction of the second switching unit 123; under a second operating level, the first discharge unit 1221 maintains the second switching unit 123 on; when the second operating level switches to the first operating level, the first discharge unit 1221 simultaneously turns off the second switching unit 123 while the first switching unit 121 is on, and then delays the conduction of the second switching unit 123. When the second operating level switches to the first operating level, the second discharge unit 1222 delays the conduction of the first switching unit 121.

[0049] In one embodiment, the first discharge unit 1221 in the reset module 120 includes a capacitor C2, a resistor R4, and a resistor R6. The first end of the capacitor C2 is connected to the second end of the first switching unit 121, the second end of the capacitor C2 is connected to the control terminal of the second switching unit 123, the second end of the capacitor C2 is also connected to the first end of the resistor R6, the second end of the resistor R6 is grounded, and the first end of the capacitor C2 is also connected to the first end of the resistor R4, the second end of the resistor R4 is grounded.

[0050] In one embodiment, the second discharge unit 1222 in the reset module 120 includes a capacitor C1, the first end of which is connected to the second end of the resistor R4, and the second end of which is connected to the control terminal of the first switching unit 121.

[0051] In one embodiment, the second switching unit 123 includes a switching transistor Q2 and a resistor R5, with the first terminal of the switching transistor Q2 connected to the first terminal of the second switching unit 123 (i.e., Figure 4 The first terminal of the switching transistor Q2 is connected to the input voltage B+, and the second terminal of the switching transistor Q2 is connected to the second terminal of the second switching unit 123 (i.e., Figure 4 The second terminal of the switching transistor Q2 is connected to the external port BU+, and the control terminal of the switching transistor Q2 is connected to the control terminal of the second switching unit 123. The first terminal of the resistor R5 is connected to the first terminal of the switching transistor Q2, and the second terminal of the resistor R5 is connected to the control terminal of the switching transistor Q2. The switching transistor Q2 is turned on with a delay under the first operating level, and remains turned on under the second operating level. When the switching transistor Q2 switches from the second operating level to the first operating level, it is turned off with a delay and then turned on again with a delay.

[0052] It should be noted that when the lever of the switch K1 is in the middle and not moved to the left or right, the switching module 110 is in an idle state. The first working level output by the switching module 110 through the second terminal of the switch K1 is a low level, the switching transistor Q1 is turned on, and the input voltage charges the capacitor C2. During the charging process, the voltage of the resistor R4 changes from high to low, so the gate voltage of the switching transistor Q2 changes from high to low. The working state of the switching transistor Q2 changes from off to on. At this time, the input voltage switches from no power supply to power supply to the external control module through the switching transistor Q2.

[0053] When the lever of the switch K1 needs to be moved left or right to select the heating mode of the aerosol matrix, the switch K1 lever is on the left or right, the switching module 110 is in the working state, the second working level output by the second terminal of the switching module 110 through the switch K1 is a high level, the switch Q1 is turned off, the capacitor C2 is discharged through the resistor R4 and the resistor R6. During this process, the switch Q1 is always in the off state, the switch Q2 is turned on, and the capacitor C2 is fully discharged to prepare for the next charging process.

[0054] When the lever of the switch K1 is moved from left to right, or from right to left, the capacitor C1 has a discharge time, so this process will not turn on the switching transistor Q1 and will not trigger a power-off reset.

[0055] When the lever of the toggle switch K1 is moved from the left or right to the middle, the switching module 110 switches from the working state to the idle state. Capacitor C1 discharges through resistor R1. After capacitor C1 completes discharge, the gate voltage of switch Q1 changes from high level to low level, and switch Q1 turns on. That is, switch Q1 is turned on with a delay by the second discharge unit 1222. During this process, the second working level jumps to the first working level while capacitor C1 is discharging, which informs the control module that a hardware reset is about to occur. At the instant switch Q1 turns on, switch Q2 turns off, and the input voltage charges capacitor C2. This process requires capacitor C2 to be fully charged. When capacitor C2 is fully charged, switch Q2 turns on. That is, the first discharge unit 1221 turns off switch Q2 at the same time switch Q1 turns on, and then turns on switch Q2 with a delay, thereby realizing the power-on reset of the control module after power failure. During the process of charging capacitor C2 with the input voltage, the control module is reset after power failure and power-on. A pause is required in the middle of this process to avoid the problem of frequent reset of the control module.

[0056] Please refer to Figure 5 In one embodiment, the switching module 110 and the reset module 120 can be located on two different circuit boards. During the switching process, the first or second operating level output by the switching module 110 can be sent to the reset module 120 via additional hardware circuitry to provide a corresponding high or low level. Alternatively, the switching module 110 and the reset module 120 can be located on the same circuit board, connected by a connecting resistor R7. The first end of the connecting resistor R7 is connected to the switching module 110, and the second end is connected to the reset module 120. When the switching module 110 and the reset module 120 are connected via the connecting resistor R7, the switching switch K1 can be toggled from left or right to the middle, allowing the capacitor C1 to discharge through resistors R1 and R7.

[0057] Please refer to Figure 6 In another embodiment, an aerosol generating device 1 is provided, including a power supply battery 200, a hardware reset circuit 100, and a control module 300. The power supply battery 200 is used to output the input voltage. The hardware reset circuit 100 is connected to the power supply battery 200 and the control module 300, and is used to reset the control module 300 after power failure and power-on. The hardware reset circuit 100 adopts the hardware reset circuit 100 in any of the above embodiments. Since the hardware reset circuit 100 has been clearly described in the above embodiments, it will not be described again here.

[0058] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A hardware reset circuit, characterized by, The application relates to an aerosol heating device, comprising: a switching module for adjusting the heating mode of the aerosol substrate, the switching module comprising an idle state and a working state; a reset module comprising a first switch unit, a delay discharge unit and a second switch unit; the control end of the first switch unit is used for connecting the switching module, the first end of the first switch unit is connected with an input voltage, and the second end of the first switch unit is connected with the delay discharge unit; when the switching module is in the idle state, the first switch unit is turned on; when the switching module is in the working state, the first switch unit is turned off; when the switching module is switched from the working state to the idle state, the first switch unit is turned on in a delay mode; the control end of the second switch unit is connected with the delay discharge unit, the first end of the second switch unit is connected with the input voltage, and the second end of the second switch unit is connected with a control module; when the switching module is in the idle state, the delay discharge unit turns on the second switch unit in a delay mode; when the switching module is in the working state, the delay discharge unit maintains the second switch unit in the on state; when the switching module is switched from the working state to the idle state, the delay discharge unit turns off the second switch unit while the first switch unit is turned on, and then turns on the second switch unit in a delay mode, so as to realize the power-off and power-on reset of the control module.

2. The hardware reset circuit of claim 1, wherein, The switching module comprises a switching switch K1, the switching switch K1 comprises a switching end, the switching end can be triggered to be switched to different contact points to adjust the heating mode of the aerosol substrate, when the switching end of the switching switch K1 is connected to a working contact point, the switching module is in the working state, and when the switching end of the switching switch K1 is connected to an idle contact point, the switching module is in the idle state; when the switching end of the switching switch K1 is connected to the idle contact point, the base end of the switching switch K1 is a first working level, and the first switch unit is turned on in response to the first working level; when the switching end of the switching switch K1 is connected to the working contact point, the base end of the switching switch K1 is a second working level, and the first switch unit is turned off in response to the second working level; when the switching end of the switching module K1 is switched from being connected to the working contact point to being connected to the idle contact point, the base end of the switching switch K1 is switched from the second working level to the first working level, and the first switch unit is turned on in a delay mode in response to the delay discharge unit.

3. The hardware reset circuit of claim 2, wherein, The switching module further comprises a resistor R2 and a resistor R1; the first end of the switching switch K1 is connected with the first end of the resistor R2, the second end of the resistor R2 is connected with an input voltage, the second end of the switching switch K1 is connected with the first end of the resistor R1, the second end of the resistor R1 is grounded, and the third end of the switching switch K1 is connected with the input voltage.

4. The hardware reset circuit of claim 2, wherein, The first switch unit comprises a switch tube Q1 and a resistor R3; The first end of the switch tube Q1 is connected to the first end of the first switch unit, the control end of the switch tube Q1 is connected to the control end of the first switch unit, and the second end of the switch tube Q1 is connected to the second end of the first switch unit; the first end of the resistor R3 is connected to the first end of the switch tube Q1, and the second end of the resistor R3 is connected to the control end of the switch tube Q1. The switch tube Q1 is turned on at the first working level, the switch tube Q1 is turned off at the second working level, and the switch tube Q1 is turned on with a delay when the second working level switches to the first working level.

5. The hardware reset circuit of claim 2, wherein, The delay discharge unit comprises a first discharge unit and a second discharge unit. The first discharge unit turns on the second switch unit with a delay at the first working level, maintains the second switch unit in the on state at the second working level, and turns off the second switch unit while the first switch unit is turned on and then turns on the second switch unit with a delay when the second working level switches to the first working level. The second discharge unit turns on the first switch unit with a delay when the second working level switches to the first working level.

6. The hardware reset circuit of claim 5, wherein, The first discharge unit comprises a capacitor C2, a resistor R4 and a resistor R6. The first end of the capacitor C2 is connected to the second end of the first switch unit, the second end of the capacitor C2 is connected to the control end of the second switch unit, the second end of the capacitor C2 is also connected to the first end of the resistor R6, the second end of the resistor R6 is grounded, the first end of the capacitor C2 is also connected to the first end of the resistor R4, and the second end of the resistor R4 is grounded.

7. The hardware reset circuit of claim 6, wherein, The second discharge unit comprises a capacitor C1, the first end of the capacitor C1 is connected to the second end of the resistor R4, and the second end of the capacitor C1 is connected to the control end of the first switch unit.

8. The hardware reset circuit of claim 2, wherein, The second switch unit comprises a switch tube Q2 and a resistor R5. The first end of the switch tube Q2 is connected to the first end of the second switch unit, the second end of the switch tube Q2 is connected to the second end of the second switch unit, and the control end of the switch tube Q2 is connected to the control end of the second switch unit; the first end of the resistor R5 is connected to the first end of the switch tube Q2, and the second end of the resistor R5 is connected to the control end of the switch tube Q2. The switch tube Q2 is turned on with a delay at the first working level, the switch tube Q2 is maintained in the on state at the second working level, and the switch tube Q2 is turned off with a delay and then turned on with a delay when the second working level switches to the first working level.

9. The hardware reset circuit of claim 1, wherein, The hardware reset circuit further comprises a connecting resistor R7, the first end of the connecting resistor R7 is connected to the switching module, and the second end of the connecting resistor R7 is connected to the reset module.

10. An aerosol generating device, characterized by, It comprises a power supply battery, a hardware reset circuit and a control module. The power supply battery is used to output an input voltage. The hardware reset circuit is connected to the power supply battery and the control module, and is used for power-on reset of the control module after power failure, wherein the hardware reset circuit is the hardware reset circuit according to any one of claims 1-9.

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