Electronic cigarette microphone protection device, method, system and chip and electronic cigarette

Abstract

The invention provides an electronic cigarette microphone protection device, method and system, a chip and an electronic cigarette, and relates to the technical field of electronic cigarettes. The electronic cigarette microphone protection device comprises an oil leakage detection module and a protection execution module. The oil leakage detection module is used for applying a preset signal to the target microphone detection end in an oil leakage detection stage and collecting an oil leakage detection electric signal which is formed after the target microphone detection end applies the preset signal and is used for representing the resistance value of the oil leakage equivalent resistor; an oil leakage conduction abnormal signal is sent to the protection execution module when it is determined that the oil leakage detection electric signal is subjected to threshold crossing change; the protection execution module is used for executing a preset electronic cigarette protection action when receiving the oil leakage conduction abnormal signal; wherein the oil leakage detection stage and the microphone detection stage of the electronic cigarette microphone multiplex a target microphone detection end in a time-sharing manner. According to the scheme, oil leakage detection and protection are achieved from the electrical characteristic level, and the protection effect is improved.

Description

Technical Field

[0001] This application relates to the field of electronic cigarette technology, and in particular to an electronic cigarette microphone protection device, method, system, chip, and electronic cigarette. Background Technology

[0002] Electronic cigarettes are electronic products that mimic traditional cigarettes. In electronic cigarette products, the capacitance changes of the cigarette's microphone are typically used to represent the force and direction of the inhaled / exhaled airflow. This capacitance can be converted into a digital signal carrying frequency information. This digital signal is then processed to obtain the capacitance and its changes, thereby determining the force and direction of the inhaled / exhaled current.

[0003] Under conditions of prolonged use, transportation vibration, temperature changes, or condensation reflux, the microphone area of ​​electronic cigarettes is prone to leakage or liquid bridge continuity. In such cases, abnormally low-resistance paths may appear between the microphone detection pins, causing the system to misjudge and trigger unexpected operations, leading to malfunctions and safety risks.

[0004] To address the issue of oil leakage in the microphone area, related technologies employ sealing, liquid-guiding structures, and oil-proof films to prevent leakage. However, these rely on the barrier provided by these structural components and cannot guarantee complete leak prevention, resulting in inadequate protection. Summary of the Invention

[0005] This application provides an electronic cigarette microphone protection device, method, system, chip, and electronic cigarette to solve the problem that the oil leakage protection effect relying on structural components for barrier is not good in related technologies.

[0006] In a first aspect, this application provides an electronic cigarette microphone protection device, including an oil leakage detection module and a protection execution module; The input terminal of the oil leakage detection module serves as the detection terminal of the electronic cigarette microphone protection device, and is used to connect with the target microphone detection terminal of the electronic cigarette microphone. The target microphone detection terminal is a detection terminal of the microphone equivalent capacitance of the electronic cigarette microphone. The reference terminal of the oil leakage detection module is connected to a first reference voltage. The output terminal of the oil leakage detection module is connected to the input terminal of the protection execution module. The oil leakage detection module is used to apply a preset signal to the target microphone detection terminal during the oil leakage detection phase of the electronic cigarette microphone protection device, and to collect the oil leakage detection electrical signal formed by the target microphone detection terminal after the preset signal is applied. If the oil leakage detection electrical signal is determined to have exceeded a threshold change, an oil leakage conduction abnormality signal is sent to the protection execution module. The oil leakage detection electrical signal is used to characterize the resistance value of the oil leakage equivalent resistance. The target microphone detection terminal is time-division multiplexed with the electronic cigarette microphone detection phase. The protection execution module is used to execute preset electronic cigarette protection actions when the oil leakage conduction abnormality signal is received.

[0007] In one optional design, the microphone detection of the electronic cigarette microphone adopts a differential structure; under the differential structure, the two detection terminals of the microphone detection module used for microphone detection in the electronic cigarette microphone are respectively connected to the target microphone detection terminal and another microphone detection terminal of the electronic cigarette microphone; the reference terminal of the oil leakage detection module is also used to connect to another microphone detection terminal of the electronic cigarette microphone, which is another detection terminal of the microphone equivalent capacitance.

[0008] In one optional design, the microphone detection of the electronic cigarette microphone adopts a single-ended detection structure; in the single-ended detection structure, the detection end of the microphone detection module used for microphone detection in the electronic cigarette microphone is connected to the target microphone detection end; the other microphone detection end of the electronic cigarette microphone is connected to ground, and the other microphone detection end of the electronic cigarette microphone is another detection terminal of the microphone equivalent capacitance.

[0009] In one alternative design, the oil leak detection module includes a first current source and an analog-to-digital converter; the first reference voltage is a ground voltage. The power supply terminal of the first current source is used to input the first power supply voltage. The output terminal of the first current source and the input terminal of the analog-to-digital converter are connected together and then used as the input terminal of the oil leakage detection module and connected to the target microphone detection terminal. The output terminal of the analog-to-digital converter is used as the output terminal of the oil leakage detection module and connected to the input terminal of the protection execution module. The first current source is used to apply a first microcurrent signal to the target microphone detection end during the oil leakage detection phase of the electronic cigarette microphone protection device; the first microcurrent signal is the preset signal; The analog-to-digital converter is used to acquire the oil leakage detection electrical signal formed by the target microphone detection end after the first micro-current signal is applied, and to perform analog-to-digital conversion on the oil leakage detection electrical signal. The converted digital oil leakage detection electrical signal is compared with a preset abnormal threshold. When an over-threshold change is determined based on the comparison result, an oil leakage conduction abnormal signal is sent to the protection execution module.

[0010] In one optional design, the oil leak detection module includes a pull-up resistor and a first comparator; the first reference voltage is a ground voltage. The first end of the pull-up resistor is connected to a second power supply voltage. The second end of the pull-up resistor is connected to the first input end of the first comparator and then serves as the input end of the oil leakage detection module and is connected to the target microphone detection end. The second input end of the first comparator is used to input a second reference voltage. The output end of the first comparator serves as the output end of the oil leakage detection module and is connected to the input end of the protection execution module. The second reference voltage is the voltage of the target microphone detection end when the electronic cigarette microphone is in a non-leaking state. The pull-up resistor is used to apply a fixed pull-up voltage signal to the target microphone detection terminal during the oil leakage detection stage, and to collect the oil leakage detection electrical signal formed by the target microphone detection terminal after the pull-up voltage signal is applied; wherein, the pull-up voltage signal is the preset signal; The first comparator is used to compare the oil leakage detection electrical signal formed by the target microphone detection terminal after the pull-up voltage signal is applied with the second reference voltage. If the comparison result indicates that the oil leakage detection electrical signal has exceeded the threshold, the comparator sends an oil leakage conduction abnormality signal to the protection execution module.

[0011] In one alternative design, the oil leak detection module includes a pull-down resistor and a second comparator; The first end of the pull-down resistor is connected to ground. The second end of the pull-down resistor is connected to the first input end of the second comparator and then serves as the input end of the oil leakage detection module, which is connected to the target microphone detection end. The second input end of the second comparator is used to input a third reference voltage. The output end of the second comparator serves as the output end of the oil leakage detection module and is connected to the input end of the protection execution module. The third reference voltage is the voltage at the target microphone detection end when the electronic cigarette microphone is in a non-leaking state. The pull-down resistor is used to apply a fixed pull-down voltage signal to the target microphone detection terminal during the oil leakage detection stage, and to collect the oil leakage detection electrical signal formed by the target microphone detection terminal after the pull-down voltage signal is applied; wherein, the pull-down voltage signal is the preset signal; The second comparator is used to compare the oil leakage detection electrical signal formed by the target microphone detection terminal after the pull-down voltage signal is applied with the third reference voltage. If the comparison result indicates that the oil leakage detection electrical signal has exceeded the threshold, an oil leakage conduction abnormality signal is sent to the protection execution module.

[0012] In one alternative design, the oil leak detection module includes a second current source and a third comparator; the first reference voltage is a ground voltage. The power supply terminal of the second current source is used to input a third power supply voltage. The output terminal of the second current source is connected to the first input terminal of the third comparator and then serves as the input terminal of the oil leakage detection module and is connected to the target microphone detection terminal. The second input terminal of the third comparator is used to input a fourth reference voltage. The output terminal of the third comparator serves as the output terminal of the oil leakage detection module and is connected to the input terminal of the protection execution module. The fourth reference voltage is the voltage of the target microphone detection terminal when the electronic cigarette microphone is in a non-leaking state. The second current source is used to apply a second microcurrent signal to the target microphone detection end during the oil leakage detection phase of the electronic cigarette microphone protection device; the second microcurrent signal is the preset signal; The third comparator is used to compare the oil leakage detection electrical signal formed by the target microphone detection terminal after the second microcurrent signal is applied with the fourth reference voltage. If the comparison result indicates that the oil leakage detection electrical signal has exceeded the threshold, an oil leakage conduction abnormal signal is sent to the protection execution module.

[0013] In one alternative design, the protection execution module is specifically used to control the heating coil of the electronic cigarette to stop heating when the oil leakage conduction abnormality signal is received.

[0014] In an optional design, the oil leakage detection module is further configured to control the protection execution module to stop executing the preset electronic cigarette protection action when the electronic cigarette microphone is detected to have returned to a non-leaking state.

[0015] Secondly, this application provides a method for protecting an electronic cigarette microphone, applied to an electronic cigarette microphone protection device as described in any of the first aspects above; the electronic cigarette microphone protection method includes: Time-division multiplexing control is implemented for the microphone detection stage and the oil leak detection stage in the same microphone detection channel; During the oil leak detection phase, a preset signal is applied to the target microphone detection end, and the oil leak detection electrical signal generated by the target microphone detection end after the preset signal is applied is collected. If the leak detection electrical signal is found to have exceeded the threshold, a preset electronic cigarette protection action is executed.

[0016] Thirdly, this application provides an electronic cigarette microphone protection system, including a main control module, a microphone detection module, and an electronic cigarette microphone protection device as described in any of the first aspects above; the main control module is connected to the microphone detection module and the electronic cigarette microphone protection device respectively; The main control module is used to perform time-division multiplexing control of the microphone detection module and the electronic cigarette microphone protection device, which share the same microphone detection channel, for the microphone detection stage and the oil leakage detection stage. The microphone detection module is used to perform microphone detection on the electronic cigarette microphone during the microphone detection stage.

[0017] Fourthly, this application provides a chip that includes an electronic cigarette microphone protection device as described in any of the first aspects above, or includes an electronic cigarette microphone protection system as described in the third aspect above.

[0018] Fifthly, this application provides an electronic cigarette, including an electronic cigarette microphone protection device as described in any of the first aspects above, or including an electronic cigarette microphone protection system as described in the third aspect above, or including a chip as described in the fourth aspect above.

[0019] The electronic cigarette microphone protection device, method, system, chip, and electronic cigarette provided in this application include an oil leakage detection module and a protection execution module. The input terminal of the oil leakage detection module serves as the detection terminal of the electronic cigarette microphone protection device and is connected to the target microphone detection terminal of the electronic cigarette microphone. The target microphone detection terminal is a detection terminal of the microphone equivalent capacitance of the electronic cigarette microphone. The reference terminal of the oil leakage detection module is connected to a first reference voltage, and the output terminal of the oil leakage detection module is connected to the input terminal of the protection execution module. During the oil leakage detection phase of the electronic cigarette microphone protection device, the oil leakage detection module applies a preset signal to the target microphone detection terminal and collects the oil leakage detection electrical signal formed by the target microphone detection terminal after the preset signal is applied, which is used to characterize the resistance value of the oil leakage equivalent resistance. If it is determined that the oil leakage detection electrical signal has exceeded the threshold, an oil leakage conduction abnormality signal is sent to the protection execution module. Upon receiving the oil leakage conduction abnormality signal, the protection execution module executes a preset electronic cigarette protection action. The oil leakage detection phase and the microphone detection phase of the electronic cigarette microphone share the target microphone detection terminal in a time-division multiplexing manner. In this way, by multiplexing the oil leakage detection function on the same microphone detection link, switching to oil leakage detection mode via time-division multiplexing, collecting oil leakage-related electrical characteristics, and executing protective actions after determining the occurrence of an oil leakage conduction anomaly based on a threshold, oil leakage protection of the electronic cigarette microphone is achieved. Compared with solutions that rely solely on structural components such as oil-proof films for protection, the solution in this application achieves oil leakage detection and protection at the electrical characteristic level, improves the ability to identify oil leakage conduction anomalies, and implements protective actions in a timely manner when an anomaly occurs, thereby improving the protection effect. Attached Figure Description

[0020] Figure 1 This is one of the structural schematic diagrams of the electronic cigarette microphone protection device provided in the embodiments of this application; Figure 2This is a schematic diagram showing the connection relationship of the multiplexed microphone detection channel in the electronic cigarette microphone protection device when the microphone detection adopts a single-end detection structure in the embodiments of this application; Figure 3 This is the second schematic diagram of the electronic cigarette microphone protection device provided in the embodiments of this application; Figure 4 This is the third schematic diagram of the electronic cigarette microphone protection device provided in the embodiments of this application; Figure 5 Fourth schematic diagram of the electronic cigarette microphone protection device provided in the embodiments of this application; Figure 6 Fifth schematic diagram of the electronic cigarette microphone protection device provided in the embodiments of this application; Figure 7 This is a schematic diagram of the electronic cigarette microphone protection system provided in an embodiment of this application; Figure 8 A flowchart illustrating the electronic cigarette microphone protection method provided in this application embodiment; Figure 9 This is a schematic diagram illustrating the switching principle between the microphone detection stage and the oil leakage detection stage in an embodiment of this application. Detailed Implementation

[0021] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A alone, A and B simultaneously, or B alone. A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c alone can mean: a alone, b alone, c alone, a combination of a and b, a combination of a and c, a combination of b and c, or a, b, and c. a, b, and c can be single or multiple. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] The terms “center,” “longitudinal,” “lateral,” “up,” “down,” “left,” “right,” “front,” and “rear,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] The terms "connected" and "connected" should be interpreted broadly. For example, in circuit structures, "connected" or "connected" can refer not only to physical connections but also to electrical or signal connections. This could be a direct connection (physical connection) or an indirect connection via at least one intermediate component, as long as the circuit is connected. It could also refer to the internal connection between two components. Similarly, a signal connection can refer to a connection via a circuit or a medium, such as radio waves. Those skilled in the art will understand the specific meaning of these terms in this application based on the specific circumstances.

[0024] Electronic cigarettes are electronic products that mimic traditional cigarettes. They control a heating element to heat e-liquid by detecting the strength and direction of the inhaled and exhaled airflow, producing an inhalable aerosol. In electronic cigarette products, the capacitance change of the microphone is typically used to represent the strength and direction of the inhaled and exhaled airflow. This capacitance can be converted into a digital signal carrying frequency information. Processing this digital signal yields the capacitance and its change, which in turn determines the strength and direction of the inhaled and exhaled current, thereby controlling the production of the e-liquid aerosol.

[0025] Under conditions of prolonged use, transportation vibration, temperature changes, or condensation reflux, the microphone area of ​​electronic cigarettes is prone to leakage or liquid bridge continuity. In such cases, abnormally low-resistance paths may appear between the microphone detection pins, causing the system to misjudge and trigger unexpected operations, leading to malfunctions and safety risks.

[0026] To address the issue of oil leakage in the microphone area, related technologies employ sealing, liquid guiding structures, and oil-proof films to prevent leakage, or only perform single-point abnormal filtration. These methods rely on the barrier properties of structural components and cannot guarantee complete leak prevention, resulting in poor protection.

[0027] Based on this, the embodiments of this application actively identify and protect against oil leakage from the perspective of changes in electrical characteristics, and provide an electronic cigarette microphone protection device. On the basis of existing microphone detection hardware, the oil leakage detection function is reused on the same microphone detection link. The device switches to the oil leakage detection mode through time-division switching or event triggering, collects oil leakage-related electrical characteristics, and then executes protection actions after determining that an oil leakage conduction abnormality has occurred based on thresholds or rules.

[0028] The following is combined Figures 1-6 The electronic cigarette microphone protection device provided in the embodiments of this application will be described in detail.

[0029] Figure 1 This paper shows one of the structural schematic diagrams of the electronic cigarette microphone protection device provided in an embodiment of this application. (Refer to...) Figure 1As shown, the electronic cigarette microphone protection device includes an oil leakage detection module 110 and a protection execution module 120. The input terminal S1 of the oil leakage detection module 110 serves as the detection terminal of the electronic cigarette microphone protection device, connecting to the target microphone detection terminal of the electronic cigarette microphone. The reference terminal S2 of the oil leakage detection module 110 is connected to a first reference voltage. The output terminal P of the oil leakage detection module 110 is connected to the input terminal of the protection execution module 120. The target microphone detection terminal is a detection terminal of the equivalent capacitance C0 of the electronic cigarette microphone. For example, in... Figure 1 In the middle, the target microphone detection end is detection terminal A.

[0030] It is understood that in some embodiments of this application, the target microphone detection terminal can also be the detection terminal B. In this case, the input terminal S1 of the oil leakage detection module 110 is connected to the detection terminal B.

[0031] In one embodiment, the microphone detection for an electronic cigarette can employ a differential structure. Specifically, Figure 1 The diagram illustrates the schematic structure of a multi-channel microphone protection device for electronic cigarettes under a differential structure. In this differential structure, the two detection terminals of the microphone detection module used for microphone detection in the electronic cigarette microphone are connected to the target microphone detection terminal and another microphone detection terminal of the electronic cigarette microphone, respectively. That is, the two detection terminals of the microphone detection module are connected to detection terminal A and detection terminal B, respectively. In this differential structure, the reference terminal S2 of the oil leakage detection module 110 is also used to connect to another microphone detection terminal of the electronic cigarette microphone, which is another detection terminal of the microphone's equivalent capacitance. The target microphone detection terminal can be either detection terminal A or detection terminal B. When the target microphone detection terminal is detection terminal A, the input terminal S1 of the oil leakage detection module 110 is connected to detection terminal A, and the reference terminal S2 of the oil leakage detection module 110 is connected to detection terminal B; when the target microphone detection terminal is detection terminal B, the input terminal S1 of the oil leakage detection module 110 is connected to detection terminal B, and the reference terminal S2 of the oil leakage detection module 110 is connected to detection terminal A.

[0032] In another embodiment, the microphone detection of the electronic cigarette microphone can also employ a single-end detection structure. Specifically, Figure 2 This diagram illustrates the connection relationship of the multiplexed microphone detection channel in an electronic cigarette microphone protection device when the microphone detection adopts a single-end detection structure. (Refer to...) Figure 2 As shown, in the single-ended detection structure, the detection end of the microphone detection module used for microphone detection in the electronic cigarette microphone is connected to the target microphone detection end; the other microphone detection end of the electronic cigarette microphone is connected to ground GND, and the other microphone detection end of the electronic cigarette microphone is another detection terminal of the microphone equivalent capacitance C0.

[0033] The target microphone detection terminal can be detection terminal A, or it can be... Figure 1 The detection terminal B in the middle. Figure 2 Taking the target microphone detection terminal as detection terminal A as an example, in this case, the input terminal S1 of the oil leakage detection module 110 is connected to detection terminal A, and the reference terminal S2 of the oil leakage detection module 110 is only used to connect the first reference voltage; when the target microphone detection terminal is as follows... Figure 1 When the detection terminal B is shown, the input terminal S1 of the oil leakage detection module 110 is connected to the detection terminal B, and the reference terminal S2 of the oil leakage detection module 110 is only used to connect the first reference voltage.

[0034] exist Figure 1 or Figure 2 In this system, the oil leakage detection module 110 applies a preset signal to the target microphone detection terminal during the oil leakage detection phase of the electronic cigarette microphone protection device, and collects the oil leakage detection electrical signal generated by the target microphone detection terminal after the preset signal is applied. If the oil leakage detection electrical signal is determined to have exceeded a threshold, an oil leakage conduction abnormality signal is sent to the protection execution module 120. The oil leakage detection electrical signal is used to characterize the resistance value of the oil leakage equivalent resistance. The target microphone detection terminal is time-division multiplexed with the electronic cigarette microphone detection phase. The protection execution module 120 executes preset electronic cigarette protection actions upon receiving the oil leakage conduction abnormality signal.

[0035] Among them, oil leakage conduction abnormality refers to an abnormally low resistance conduction state caused by leakage, condensate bridging, or contamination. Preset electronic cigarette protection actions may include at least one of the following, but are not limited to: suppressing output, disabling operation, or delaying recovery.

[0036] Specifically, with Figure 1 Taking the differential structure shown as an example, when oil leakage occurs in the microphone area of ​​an electronic cigarette, an abnormally low resistance conduction state will appear, generating at least one of the following resistors: first resistor R1, second resistor R2, and third resistor R3. By detecting the equivalent resistance values ​​of these resistors, it can be determined whether oil leakage has occurred in the microphone area.

[0037] To detect the equivalent resistance of an oil leak, a preset signal, such as a micro-current signal, a pull-up voltage signal, or a pull-down voltage signal, can be applied to the target microphone detection terminal. The equivalent resistance of the oil leak is obtained by detecting the oil leak detection electrical signal generated after the preset signal is applied to the target microphone detection terminal. Based on this, the oil leak detection electrical signal generated after the preset signal is applied can be used to characterize the equivalent resistance of the oil leak, or the equivalent resistance of the oil leak can be determined based on the oil leak detection electrical signal. Then, by comparing the oil leak detection electrical signal or the determined equivalent resistance of the oil leak with a set abnormal threshold, it can be determined whether an oil leak has occurred.

[0038] For example, an abnormal threshold can be set as a single threshold, such as the first threshold. When the resistance value of the oil leakage equivalent resistance represented by the oil leakage detection electrical signal is less than or equal to the first threshold, it indicates that the oil leakage detection electrical signal has changed beyond the threshold. At this time, the oil leakage detection module 110 can send an oil leakage conduction abnormal signal to the protection execution module 120, so that the protection execution module 120 performs the preset electronic cigarette protection action.

[0039] For example, anomaly thresholds can be set as dual thresholds or hysteresis thresholds, such as setting a second threshold and a third threshold, where the second threshold is less than the third threshold. When the resistance value of the oil leakage detection electrical signal, representing the equivalent resistance of the oil leakage, is less than or equal to the second threshold, it indicates that the oil leakage detection electrical signal has exceeded the threshold, and an abnormal oil leakage state is determined. The oil leakage detection module 110 can then send an oil leakage conduction anomaly signal to the protection execution module 120, causing the protection execution module 120 to execute a preset electronic cigarette protection action. When the resistance value of the oil leakage detection electrical signal, representing the equivalent resistance of the oil leakage, is greater than or equal to the third threshold, it indicates that the oil leakage detection electrical signal has returned to a normal state, i.e., it has exited the abnormal state. At this point, the protection execution module 120 can exit the preset electronic cigarette protection action. When the resistance value of the oil leakage detection electrical signal, representing the equivalent resistance of the oil leakage, is greater than the second threshold but less than the third threshold, the current state remains unchanged. In this way, by separating the conditions for entering and exiting anomalies, repeated jumps caused by critical fluctuations can be suppressed, improving the stability of the determination.

[0040] For example, the anomaly threshold can be at least one of absolute value, relative baseline offset, or rate of change.

[0041] For example, the protection execution module 120 can be specifically used to control the heating coil of the electronic cigarette to stop heating when a leakage conduction abnormal signal is received.

[0042] For example, the protection execution module 120 can send a control signal to the switch tube that controls the operation of the heating wire in the electronic cigarette, disconnect the heating wire from the power supply, thereby controlling the heating wire to stop heating and achieving the purpose of protection.

[0043] For example, the preset electronic cigarette protection actions executed by the protection execution module 120 may also include at least one of the following: suppressing electronic cigarette output, prohibiting electronic cigarette operation, and delaying recovery, but are not limited thereto.

[0044] For example, the oil leakage detection module 110 is also used to control the protection execution module 120 to stop executing preset electronic cigarette protection actions when the electronic cigarette microphone is detected to have returned to a non-leaking state.

[0045] For example, when the leak detection module 110 detects that the leak detection signal has returned to the normal threshold range from an over-threshold state, it indicates that the e-cigarette microphone has returned to a non-leaking state, and the control protection execution module 120 stops executing the preset e-cigarette protection action. Alternatively, if the leak detection module 110 detects the leak detection signal within the normal threshold range a preset number of times consecutively, it can be determined that the e-cigarette microphone has returned to a non-leaking state, and the control protection execution module 120 stops executing the preset e-cigarette protection action. Or, if the leak detection module 110 detects that the leak detection signal is within the normal threshold range for a preset time period, it can be determined that the e-cigarette microphone has returned to a non-leaking state, and the control protection execution module 120 stops executing the preset e-cigarette protection action.

[0046] The electronic cigarette microphone protection device provided in this application includes an oil leakage detection module and a protection execution module. The input terminal of the oil leakage detection module serves as the detection terminal of the electronic cigarette microphone protection device and is connected to the target microphone detection terminal of the electronic cigarette microphone. The target microphone detection terminal is a detection terminal of the microphone equivalent capacitance of the electronic cigarette microphone. The reference terminal of the oil leakage detection module is connected to a first reference voltage, and the output terminal of the oil leakage detection module is connected to the input terminal of the protection execution module. During the oil leakage detection phase of the electronic cigarette microphone protection device, the oil leakage detection module applies a preset signal to the target microphone detection terminal and collects the oil leakage detection electrical signal formed by the target microphone detection terminal after the preset signal is applied, which is used to characterize the resistance value of the oil leakage equivalent resistance. If it is determined that the oil leakage detection electrical signal has exceeded the threshold, an oil leakage conduction abnormal signal is sent to the protection execution module. Upon receiving the oil leakage conduction abnormal signal, the protection execution module executes a preset electronic cigarette protection action. The oil leakage detection phase and the microphone detection phase of the electronic cigarette microphone share the target microphone detection terminal in a time-division multiplexing manner. In this way, by multiplexing the oil leakage detection function on the same microphone detection link, switching to oil leakage detection mode via time-division multiplexing, collecting oil leakage-related electrical characteristics, and executing protective actions after determining the occurrence of an oil leakage conduction anomaly based on a threshold, oil leakage protection of the electronic cigarette microphone is achieved. Compared with solutions that rely solely on structural components such as oil-proof films for protection, the solution in this application achieves oil leakage detection and protection at the electrical characteristic level, improves the ability to identify oil leakage conduction anomalies, and implements protective actions in a timely manner when an anomaly occurs, thereby improving the protection effect.

[0047] based on Figure 1 The electronic cigarette microphone protection device in the corresponding embodiment, taking a differential structure as an example, Figure 3 This is a second schematic diagram of the electronic cigarette microphone protection device provided in an embodiment of this application. (Refer to...) Figure 3As shown, the electronic cigarette microphone protection device includes an oil leakage detection module 110 and a protection execution module 120. The oil leakage detection module 110 includes a first current source IS1 and an analog-to-digital converter ADC1. The reference terminal S2 of the oil leakage detection module 110 is connected to ground GND, meaning the first reference voltage connected to the reference terminal S2 is the ground voltage. The power supply terminal V1 of the first current source IS1 is used to input the first power supply voltage. The output terminal of the first current source IS1 is connected to the input terminal of the analog-to-digital converter ADC1, serving as the input terminal S1 of the oil leakage detection module 110 and the target microphone detection terminal (…). Figure 3 (Taking detection terminal A as an example) The output terminal of analog-to-digital converter ADC1 is connected as the output terminal P of oil leakage detection module 110 and the input terminal of protection execution module 120.

[0048] The first current source IS1 is used to apply a first micro-current signal to the target microphone detection end during the oil leakage detection stage of the electronic cigarette microphone protection device. This first micro-current signal is the preset signal. The analog-to-digital converter ADC1 is used to collect the oil leakage detection electrical signal formed at the target microphone detection end after the first micro-current signal is applied, and to perform analog-to-digital conversion on the oil leakage detection electrical signal. The converted digital oil leakage detection electrical signal is compared with the preset abnormal threshold. When it is determined that an over-threshold change has occurred based on the comparison result, an oil leakage conduction abnormal signal is sent to the protection execution module 120.

[0049] Specifically, the leak detection and microphone detection share the same microphone detection link, and can share detection terminals A and B to achieve their respective detection functions through time-division multiplexing. When switching to the leak detection stage, the detection scan of the microphone detection stage before the switch can be turned off and the register state can be saved. At this time, the electronic cigarette microphone protection device starts to work, and the first current source IS1 applies a first micro-current signal to the target microphone detection terminal (detection terminal A). If an abnormal conduction occurs in the microphone area due to leaking, at least one of the following resistors will be generated: first resistor R1, second resistor R2, and third resistor R3. At this time, the applied first micro-current signal forms a voltage signal at the target microphone detection terminal (detection terminal A) due to the presence of abnormal conduction resistance. Then, the target microphone detection terminal (detection terminal A) can be sampled by the analog-to-digital converter ADC1. The voltage value of the target microphone detection terminal (detection terminal A) is determined based on the sampled leak detection electrical signal, and then the equivalent resistance value of the leak caused by the leak in the microphone area is determined based on the voltage value and the first micro-current signal. Then, the analog-to-digital converter ADC1 can compare the determined resistance value with the set abnormal threshold. When it is determined that an oil leakage conduction abnormality has occurred based on the comparison result, it sends an oil leakage conduction abnormality signal to the protection execution module 120, causing the protection execution module 120 to perform preset electronic cigarette protection actions, such as controlling the heating coil of the electronic cigarette to stop heating.

[0050] If no oil leak is detected during the oil leak detection phase, the system will switch to the microphone detection phase after the oil leak detection phase ends, based on time-division multiplexing. The register state saved in the previous microphone detection phase will be restored, and the previous microphone detection workflow will continue.

[0051] For example, the sampling method for sampling the target microphone detection end (detection end A) may include single sampling, continuous multiple sampling, or sliding window statistical sampling.

[0052] Understandable, Figure 3 Taking detection terminal A as an example, the target microphone detection terminal can also be detection terminal B in practical applications. When detection terminal B is selected, the circuit structure and working principle of the oil leakage detection module 110 are the same as... Figure 3 Similarly, the reference terminal S2 is connected to the detection terminal A, and the input terminal S1 of the oil leak detection module 110 is connected to the detection terminal B.

[0053] The electronic cigarette microphone protection device provided in this application embodiment can detect oil leakage by combining micro-current source excitation with analog-to-digital converter sampling. By reusing the oil leakage detection function on the same microphone detection link, oil leakage detection and protection are realized from the electrical characteristic level, which improves the ability to identify abnormal oil leakage conduction and implements protection actions in a timely manner when abnormality occurs, thereby improving the protection effect.

[0054] based on Figure 1 The electronic cigarette microphone protection device in the corresponding embodiment, taking a differential structure as an example, Figure 4 The third schematic diagram of the electronic cigarette microphone protection device provided in this application embodiment is shown below. Figure 4 As shown, the electronic cigarette microphone protection device includes an oil leakage detection module 110 and a protection execution module 120. The oil leakage detection module 110 includes a pull-up resistor Rp and a first comparator IA1. The reference terminal S2 of the oil leakage detection module 110 is connected to ground GND, meaning the first reference voltage connected to the reference terminal S2 is the ground voltage. The first end of the pull-up resistor Rp is connected to the second supply voltage VCC2, and the second end of the pull-up resistor Rp is connected to the first input terminal of the first comparator IA1, serving as the input terminal S1 of the oil leakage detection module 110 and the target microphone detection terminal (…). Figure 4 Taking detection terminal A as an example, the second input terminal of the first comparator IA1 is used to input the second reference voltage V2; the output terminal of the first comparator IA1 is connected to the output terminal P of the oil leakage detection module 110 and the input terminal of the protection execution module 120. The second reference voltage V2 is the voltage at the target microphone detection terminal (detection terminal A) when the electronic cigarette microphone is in a non-leaking state.

[0055] The pull-up resistor Rp is used to apply a fixed pull-up voltage signal to the target microphone detection terminal during the oil leakage detection stage, and to collect the oil leakage detection electrical signal formed by the target microphone detection terminal after the pull-up voltage signal is applied. This pull-up voltage signal is the preset signal. The first comparator IA1 is used to compare the oil leakage detection electrical signal formed by the target microphone detection terminal after the pull-up voltage signal is applied with the second reference voltage V2. If the comparison result indicates that the oil leakage detection electrical signal has exceeded the threshold, an oil leakage conduction abnormality signal is sent to the protection execution module 120.

[0056] Specifically, the leak detection and microphone detection share the same microphone detection link, and can share detection terminals A and B to achieve their respective detection functions through time-division multiplexing. When switching to the leak detection stage, the detection scan of the microphone detection stage before the switch can be closed and the register state can be saved. At this time, the electronic cigarette microphone protection device starts to work, and the voltage of detection terminal A will be biased by the pull-up resistor Rp. If no leak or conduction abnormality occurs in the microphone area, a fixed pull-up voltage signal will be generated at detection terminal A, which is the bias voltage of the pull-up resistor Rp. If an oil leakage conduction abnormality occurs in the microphone area, at least one of the following resistors, such as the first resistor R1, the second resistor R2, and the third resistor R3, will be generated. This will cause a change in the bias voltage at the detection terminal A. Based on this, the target microphone detection terminal (detection terminal A) can be sampled. The sampled oil leakage detection electrical signal is compared with the second reference voltage V2 by the first comparator IA1. If the comparison determines that an over-threshold change has occurred, an oil leakage conduction abnormality is determined. At this time, the first comparator IA1 sends an oil leakage conduction abnormality signal to the protection execution module 120, causing the protection execution module 120 to perform a preset electronic cigarette protection action, such as controlling the heating coil of the electronic cigarette to stop heating.

[0057] If no oil leak is detected during the oil leak detection phase, the system will switch to the microphone detection phase after the oil leak detection phase ends, based on time-division multiplexing. The register state saved in the previous microphone detection phase will be restored, and the previous microphone detection workflow will continue.

[0058] For example, the sampling method for sampling the target microphone detection end (detection end A) may include single sampling, continuous multiple sampling, or sliding window statistical sampling.

[0059] Understandable, Figure 4 Taking detection terminal A as an example, the target microphone detection terminal can also be detection terminal B in practical applications. When detection terminal B is selected, the circuit structure and working principle of the oil leakage detection module 110 are the same as... Figure 4 Similarly, the reference terminal S2 is connected to the detection terminal A, and the input terminal S1 of the oil leak detection module 110 is connected to the detection terminal B.

[0060] The electronic cigarette microphone protection device provided in this application embodiment can detect oil leakage by combining pull-up resistor excitation with comparator judgment. By reusing the oil leakage detection function on the same microphone detection link, oil leakage detection and protection are realized from the electrical characteristic level, which improves the ability to identify abnormal oil leakage conduction and implements protection actions in a timely manner when abnormality occurs, thereby improving the protection effect.

[0061] based on Figure 1 The electronic cigarette microphone protection device in the corresponding embodiment, taking a differential structure as an example, Figure 5 The fourth schematic diagram of the electronic cigarette microphone protection device provided in this application embodiment is shown below. Figure 5 As shown, the electronic cigarette microphone protection device includes an oil leakage detection module 110 and a protection execution module 120. The oil leakage detection module 110 includes a pull-down resistor Rd and a second comparator IA2; the first end of the pull-down resistor Rd is connected to ground GND, and the second end of the pull-down resistor Rd is connected to the first input end of the second comparator IA2, serving as the input end S1 of the oil leakage detection module 110 and the target microphone detection end (…). Figure 5 (Taking detection terminal B as an example) The second input terminal of the second comparator IA2 is used to input the third reference voltage V3. The output terminal of the second comparator IA2 is connected to the output terminal P of the oil leakage detection module 110 and the input terminal of the protection execution module 120. The reference terminal S2 of the oil leakage detection module 110 is used to input the first reference voltage VCC1. The third reference voltage V3 is the voltage of the target microphone detection terminal (detection terminal B) when the electronic cigarette microphone is in a non-leaking state.

[0062] The pull-down resistor Rd is used to apply a fixed pull-down voltage signal to the target microphone detection terminal during the oil leakage detection stage, and to collect the oil leakage detection electrical signal formed by the target microphone detection terminal after the pull-down voltage signal is applied. This pull-down voltage signal is the preset signal. The second comparator IA2 is used to compare the oil leakage detection electrical signal formed by the target microphone detection terminal after the pull-down voltage signal is applied with the third reference voltage V3. If the comparison result indicates that the oil leakage detection electrical signal has exceeded the threshold, an oil leakage conduction abnormal signal is sent to the protection execution module 120.

[0063] Specifically, the leak detection and microphone detection share the same microphone detection link, and can share detection terminals A and B through time-division multiplexing to achieve their respective detection functions. When switching to the leak detection stage, the detection scan of the microphone detection stage before the switch can be closed and the register state can be saved. At this time, the electronic cigarette microphone protection device starts to work, and the voltage of detection terminal B will be biased by the pull-down resistor Rd. If no leak or conduction abnormality occurs in the microphone area, a fixed pull-down voltage signal will be generated at detection terminal B, which is the bias voltage of the pull-down resistor Rd. If an oil leakage conduction abnormality occurs in the microphone area, at least one of the following resistors, such as the first resistor R1, the second resistor R2, and the third resistor R3, will be generated. This will cause a change in the bias voltage at the detection terminal B. Based on this, the target microphone detection terminal (detection terminal B) can be sampled. The sampled oil leakage detection electrical signal is compared with the third reference voltage V3 by the second comparator IA2. If the comparison determines that an over-threshold change has occurred, an oil leakage conduction abnormality is determined. At this time, the second comparator IA2 sends an oil leakage conduction abnormality signal to the protection execution module 120, causing the protection execution module 120 to perform a preset electronic cigarette protection action, such as controlling the heating coil of the electronic cigarette to stop heating.

[0064] If no oil leak is detected during the oil leak detection phase, the system will switch to the microphone detection phase after the oil leak detection phase ends, based on time-division multiplexing. The register state saved in the previous microphone detection phase will be restored, and the previous microphone detection workflow will continue.

[0065] For example, the sampling method for sampling the target microphone detection terminal (detection terminal B) may include single sampling, continuous multiple sampling, or sliding window statistical sampling.

[0066] Understandable, Figure 5 Taking detection terminal B as an example, the target microphone detection terminal can also be detection terminal A in practical applications. When detection terminal A is selected, the circuit structure and working principle of the oil leakage detection module 110 are the same as... Figure 5 Similarly, the reference terminal S2 is connected to the detection terminal B, and the input terminal S1 of the oil leak detection module 110 is connected to the detection terminal A.

[0067] The electronic cigarette microphone protection device provided in this application embodiment can detect oil leakage by combining pull-down resistors with comparator judgment. By reusing the oil leakage detection function on the same microphone detection link, oil leakage detection and protection are realized from the electrical characteristic level, which improves the ability to identify abnormal oil leakage conduction and implements protection actions in a timely manner when abnormality occurs, thereby improving the protection effect.

[0068] based on Figure 1 The electronic cigarette microphone protection device in the corresponding embodiment, taking a differential structure as an example, Figure 6The fifth schematic diagram of the electronic cigarette microphone protection device provided in this application embodiment is shown below. Figure 6 As shown, the electronic cigarette microphone protection device includes an oil leakage detection module 110 and a protection execution module 120. The oil leakage detection module 110 includes a second current source IS2 and a third comparator IA3. The reference terminal S2 of the oil leakage detection module 110 is connected to ground GND, meaning the first reference voltage connected to the reference terminal S2 is the ground voltage.

[0069] The power supply terminal of the second current source IS2 is used to input the third power supply voltage VCC3. The output terminal of the second current source IS2 is connected to the first input terminal of the third comparator IA3 and serves as the input terminal S1 of the oil leakage detection module 110 and the target microphone detection terminal. Figure 6 (Taking detection terminal A as an example) is connected; the second input terminal of the third comparator IA3 is used to input the fourth reference voltage V4, and the output terminal of the third comparator IA3 is connected to the output terminal P of the oil leakage detection module 110 and the input terminal of the protection execution module 120. The fourth reference voltage V4 is the voltage of the target microphone detection terminal when the electronic cigarette microphone is in a non-leaking state.

[0070] The second current source IS2 is used to apply a second micro-current signal to the target microphone detection end during the oil leakage detection stage of the electronic cigarette microphone protection device. This second micro-current signal is the preset signal. The third comparator IA3 is used to compare the oil leakage detection electrical signal formed at the target microphone detection end after the second micro-current signal is applied with the fourth reference voltage V4. If the comparison result indicates that the oil leakage detection electrical signal has exceeded the threshold, an oil leakage conduction abnormal signal is sent to the protection execution module 120.

[0071] Specifically, the oil leak detection and microphone detection share the same microphone detection link, and can share detection terminals A and B to achieve their respective detection functions through time-division multiplexing. When switching to the oil leak detection stage, the detection scan of the microphone detection stage before the switch can be turned off and the register state can be saved. At this time, the electronic cigarette microphone protection device starts to work, and the second current source IS2 applies a second micro-current signal to the target microphone detection terminal (detection terminal A). If an oil leakage conduction abnormality occurs in the microphone area, at least one of the following resistors, R1, R2, and R3, will be generated. At this time, the applied second micro-current signal will form a voltage signal at the target microphone detection terminal (detection terminal A) due to the presence of the abnormal conduction resistance, causing a change in the voltage at the target microphone detection terminal (detection terminal A). At this time, the voltage signal at the target microphone detection terminal (detection terminal A) can be collected to obtain the oil leakage detection electrical signal. Then, the sampled oil leakage detection electrical signal is compared with the fourth reference voltage V4 by the third comparator IA3. If the comparison determines that an over-threshold change has occurred, an oil leakage conduction abnormality is determined to have occurred. At this time, the third comparator IA3 sends an oil leakage conduction abnormality signal to the protection execution module 120, causing the protection execution module 120 to execute a preset electronic cigarette protection action, such as controlling the heating coil of the electronic cigarette to stop heating.

[0072] If no oil leak is detected during the oil leak detection phase, the system will switch to the microphone detection phase after the oil leak detection phase ends, based on time-division multiplexing. The register state saved in the previous microphone detection phase will be restored, and the previous microphone detection workflow will continue.

[0073] For example, the sampling method for sampling the target microphone detection end (detection end A) may include single sampling, continuous multiple sampling, or sliding window statistical sampling.

[0074] Understandable, Figure 6 Taking detection terminal A as an example, the target microphone detection terminal can also be detection terminal B in practical applications. When detection terminal B is selected, the circuit structure and working principle of the oil leakage detection module 110 are the same as... Figure 6 Similarly, the reference terminal S2 is connected to the detection terminal A, and the input terminal S1 of the oil leak detection module 110 is connected to the detection terminal B.

[0075] The electronic cigarette microphone protection device provided in this application embodiment can detect oil leakage by combining micro-current source excitation with comparator judgment. By reusing the oil leakage detection function on the same microphone detection link, oil leakage detection and protection are realized from the electrical characteristic level, which improves the ability to identify abnormal oil leakage conduction and implements protection actions in a timely manner when abnormality occurs, thereby improving the protection effect.

[0076] Understandable, Figures 3-6The corresponding embodiments are illustrated using a differential structure as an example. The structure and working principle of the oil leak detection module 110 in each embodiment are also applicable to... Figure 2 The single-ended detection structure shown is not described in detail here.

[0077] According to the electronic cigarette microphone protection device of the above embodiments, on the one hand, by reusing the oil leakage detection function on the same microphone detection link, compared with the solution that only relies on the protection of structures such as the oil-proof film, the solution of this application realizes oil leakage detection and protection from the electrical characteristic level, improves the ability to identify abnormal oil leakage conduction, and implements protection actions in a timely manner when abnormalities occur, thereby improving the protection effect. Oil leakage protection can be achieved without a separate oil leakage sensor, with small hardware increments. On the other hand, it has an scalable detection implementation path, which is suitable for reuse in different chips and product platforms. The risk of malfunction caused by oil leakage can be reduced through integrated judgment.

[0078] Based on the electronic cigarette microphone protection devices of the above embodiments, this application also provides an electronic cigarette microphone protection system. Taking a differential structure as an example, Figure 7 An exemplary schematic diagram of the electronic cigarette microphone protection system provided in this application embodiment is shown below, with reference to... Figure 7 As shown, the electronic cigarette microphone protection system includes a main control module 710, a microphone detection module 720, and an electronic cigarette microphone protection device 730. The main control module 710 is connected to the microphone detection module 720 and the electronic cigarette microphone protection device 730, respectively.

[0079] The main control module 710 is used for time-division multiplexing control of the microphone detection module 720 and the electronic cigarette microphone protection device 730, which share the same microphone detection channel, for the microphone detection stage and the oil leakage detection stage; the microphone detection module is used to perform microphone detection on the electronic cigarette microphone during the microphone detection stage. The electronic cigarette microphone protection device 730 is the electronic cigarette microphone protection device described in any of the above embodiments.

[0080] according to Figure 7 The electronic cigarette microphone protection system shown in this paper, during the microphone detection phase, involves the main control module 710 controlling the microphone detection module 720 to perform microphone detection on the electronic cigarette microphone. The detection principle can refer to existing electronic cigarette microphone detection principles, and this application does not impose specific limitations on it. At preset time intervals, the main control module 710 shuts down the detection scan of the microphone detection module 720, saves the register state, and switches to the electronic cigarette microphone protection device 730, entering the oil leakage detection phase. At this time, the electronic cigarette microphone protection device 730 starts working, reusing the microphone detection channel. During the oil leakage detection phase, the oil leakage detection module 110 sends a signal to the target microphone detection end (…). Figure 7Taking detection terminal A as an example, a preset signal is applied, and the oil leakage detection electrical signal generated at the target microphone detection terminal (detection terminal A) after the preset signal is applied is collected. If it is determined that the oil leakage detection electrical signal has exceeded the threshold, an oil leakage conduction abnormality signal is sent to the protection execution module 120. Upon receiving the oil leakage conduction abnormality signal, the protection execution module 120 executes the preset electronic cigarette protection action. For example, the protection execution module 120 can send a control signal to the switching transistor Q1 to control the switching transistor Q1 to disconnect, thereby disconnecting the power supply terminal BAT from the heating wire (or heating resistor) Rs, and thus stopping the heating wire Rs from heating, achieving the purpose of protection.

[0081] During the leak detection phase, if the leak detection module 110 detects that the e-cigarette microphone has returned to a non-leaking state, for example, if the leak detection electrical signal returns to the normal threshold range, it can control the protection execution module 120 to stop executing the preset e-cigarette protection action. At this time, the main control module 710 can directly switch the detection mode back to the microphone detection phase, or switch back to the microphone detection phase after the leak detection phase ends.

[0082] If the electronic cigarette microphone protection device 730 does not detect an oil leak during the oil leak detection phase, the main control module 710 will switch the detection mode to the microphone detection phase of the microphone detection module 720 after the oil leak detection phase ends, restore the register state saved in the previous microphone detection phase, and continue the previous microphone detection workflow.

[0083] For example, the main control module 710 may be a processor or a controller.

[0084] The electronic cigarette microphone protection system provided in this application reuses the oil leakage detection function on the same microphone detection link. Compared with solutions that rely solely on protective structures such as oil-proof films, it achieves oil leakage detection and protection at the electrical characteristic level, improves the ability to identify abnormal oil leakage conduction, and implements protective actions in a timely manner when abnormalities occur, thus improving the protection effect. It can achieve oil leakage protection without a separate oil leakage sensor, resulting in minimal hardware increments. Moreover, the protection actions can be linked with system strategies, improving the consistency and maintainability of the system.

[0085] This application also provides a method for protecting the microphone of an electronic cigarette, which can be applied to the electronic cigarette microphone protection device described in any of the above embodiments.

[0086] Figure 8 An exemplary flowchart of the electronic cigarette microphone protection method provided in this application is shown below. Figure 8 As shown, the electronic cigarette microphone protection method may include the following steps 810 to 830.

[0087] Step 810: Perform time-division multiplexing control of the microphone detection stage and the oil leakage detection stage in the same microphone detection channel.

[0088] Electronic cigarette microphone protection devices and electronic cigarette microphone detection modules can use the same microphone detection channel through time-sharing multiplexing. The switching principle between the microphone detection stage and the leakage detection stage can be found in [reference needed]. Figure 9 As shown, the microphone detection stage and the oil leak detection stage are switched in a time-sharing manner, and the two stages can reuse the same microphone detection channel in a time-sharing manner.

[0089] Step 820: During the oil leak detection stage, apply a preset signal to the target microphone detection end and collect the oil leak detection electrical signal generated by the target microphone detection end after the preset signal is applied.

[0090] During the leak detection phase, the microphone detection channel can be switched to be used by the e-cigarette microphone protection device. The e-cigarette microphone protection device can apply a preset signal, such as a micro-current, pull-up voltage signal, or pull-down voltage signal, to the target microphone detection terminal (a detection terminal of the e-cigarette microphone's equivalent capacitance) through its leak detection module. Correspondingly, if no leak conduction abnormality occurs in the microphone area, the target microphone detection terminal will maintain a high resistance state or have a fixed pull-up or pull-down bias voltage; if a leak conduction abnormality occurs in the microphone area, a low resistance state will be generated in the detection channel, causing a change in the signal at the target microphone detection terminal. Based on this, the leak detection electrical signal formed at the target microphone detection terminal after the preset signal is applied can be collected, and this leak detection electrical signal can be used to further determine whether a leak conduction abnormality has occurred.

[0091] Step 830: If it is determined that the oil leak detection electrical signal has changed beyond the threshold, execute the preset electronic cigarette protection action.

[0092] When the e-cigarette microphone protection device determines that an oil leakage detection electrical signal has exceeded the threshold change through its oil leakage detection module, it can determine that an oil leakage conduction abnormality has occurred. At this time, it can send an oil leakage conduction abnormality signal to its protection execution module, causing the protection execution module to perform a preset e-cigarette protection action. This action may include at least one of the following: controlling the e-cigarette heating coil to stop heating, suppressing the e-cigarette output, prohibiting the e-cigarette from working, and delaying recovery, but is not limited to these.

[0093] For example, the electronic cigarette microphone protection method may further include: stopping the execution of preset electronic cigarette protection actions when the electronic cigarette microphone is detected to have returned to a non-leaking state.

[0094] The electronic cigarette microphone protection method provided in this application multiplexes the oil leakage detection function on the same microphone detection link, switches to oil leakage detection mode through time-division multiplexing, collects oil leakage-related electrical characteristics, and executes protective actions after determining that an oil leakage conduction anomaly has occurred based on a threshold, thus achieving oil leakage protection for the electronic cigarette microphone. Compared with solutions that rely solely on structural components such as oil-proof films for protection, the solution in this application achieves oil leakage detection and protection at the electrical characteristic level, improves the ability to identify oil leakage conduction anomalies, and implements protective actions in a timely manner when an anomaly occurs, thereby improving the protection effect.

[0095] This application also provides a chip that includes the electronic cigarette microphone protection device as described in any of the above embodiments, or the electronic cigarette microphone protection system as described in the above embodiments. This chip can achieve the functions of the electronic cigarette microphone protection device as described in any of the above embodiments. It achieves electronic cigarette microphone leakage protection by multiplexing the oil leakage detection function on the same microphone detection link, switching to oil leakage detection mode via time-division multiplexing, collecting oil leakage-related electrical characteristics, and executing protective actions after determining an oil leakage conduction anomaly based on a threshold, thus realizing oil leakage protection for the electronic cigarette microphone. Compared to solutions that rely solely on structural components such as oil-proof films for protection, the solution of this application achieves oil leakage detection and protection at the electrical characteristic level, improving the ability to identify oil leakage conduction anomalies and implementing protective actions promptly when an anomaly occurs, thereby improving the protection effect.

[0096] This application also provides an electronic cigarette, which may include the electronic cigarette microphone protection device as described in any of the above embodiments, or the electronic cigarette microphone protection system as described in the above embodiments, or the chip as described in the above embodiments. This electronic cigarette can achieve the functions of the electronic cigarette microphone protection device as described in any of the above embodiments. It achieves microphone leakage protection by multiplexing the oil leakage detection function on the same microphone detection link, switching to oil leakage detection mode via time-division multiplexing, collecting oil leakage-related electrical characteristics, and executing protective actions after determining an oil leakage conduction anomaly based on a threshold. Compared to solutions that rely solely on structural components such as oil-proof films for protection, the solution of this application achieves oil leakage detection and protection at the electrical characteristic level, improving the ability to identify oil leakage conduction anomalies and implementing protective actions promptly when an anomaly occurs, thus improving the protection effect.

[0097] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations thereof that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

Claims

1. A protective device for an electronic cigarette microphone, characterized in that, Includes an oil leak detection module and a protection execution module; The input terminal of the oil leakage detection module serves as the detection terminal of the electronic cigarette microphone protection device, and is used to connect with the target microphone detection terminal of the electronic cigarette microphone. The target microphone detection terminal is a detection terminal of the microphone equivalent capacitance of the electronic cigarette microphone. The reference terminal of the oil leakage detection module is connected to a first reference voltage. The output terminal of the oil leakage detection module is connected to the input terminal of the protection execution module. The oil leakage detection module is used to apply a preset signal to the target microphone detection terminal during the oil leakage detection phase of the electronic cigarette microphone protection device, and to collect the oil leakage detection electrical signal formed by the target microphone detection terminal after the preset signal is applied. If the oil leakage detection electrical signal is determined to have exceeded a threshold change, an oil leakage conduction abnormality signal is sent to the protection execution module. The oil leakage detection electrical signal is used to characterize the resistance value of the oil leakage equivalent resistance. The target microphone detection terminal is time-division multiplexed with the electronic cigarette microphone detection phase. The protection execution module is used to execute preset electronic cigarette protection actions when the oil leakage conduction abnormality signal is received.

2. The electronic cigarette microphone protection device according to claim 1, characterized in that, The microphone detection of the electronic cigarette microphone adopts a differential structure; In the differential structure, the two detection terminals of the microphone detection module used for microphone detection in the electronic cigarette microphone are respectively connected to the target microphone detection terminal and another microphone detection terminal of the electronic cigarette microphone; the reference terminal of the oil leakage detection module is also used to connect to another microphone detection terminal of the electronic cigarette microphone, which is another detection terminal of the equivalent capacitance of the microphone.

3. The electronic cigarette microphone protection device according to claim 1, characterized in that, The microphone detection of the electronic cigarette microphone adopts a single-ended detection structure; in the single-ended detection structure, the detection end of the microphone detection module used for microphone detection in the electronic cigarette microphone is connected to the target microphone detection end; the other microphone detection end of the electronic cigarette microphone is connected to ground, and the other microphone detection end of the electronic cigarette microphone is another detection terminal of the microphone equivalent capacitance.

4. The electronic cigarette microphone protection device according to any one of claims 1 to 3, characterized in that, The oil leak detection module includes a first current source and an analog-to-digital converter; the first reference voltage is the ground voltage. The power supply terminal of the first current source is used to input the first power supply voltage. The output terminal of the first current source and the input terminal of the analog-to-digital converter are connected together and then used as the input terminal of the oil leakage detection module and connected to the target microphone detection terminal. The output terminal of the analog-to-digital converter is used as the output terminal of the oil leakage detection module and connected to the input terminal of the protection execution module. The first current source is used to apply a first micro-current signal to the target microphone detection end during the oil leakage detection phase of the electronic cigarette microphone protection device; The first microcurrent signal is the preset signal; The analog-to-digital converter is used to acquire the oil leakage detection electrical signal formed by the target microphone detection end after the first micro-current signal is applied, and to perform analog-to-digital conversion on the oil leakage detection electrical signal. The converted digital oil leakage detection electrical signal is compared with a preset abnormal threshold. When an over-threshold change is determined based on the comparison result, an oil leakage conduction abnormal signal is sent to the protection execution module.

5. The electronic cigarette microphone protection device according to any one of claims 1 to 3, characterized in that, The oil leak detection module includes a pull-up resistor and a first comparator; the first reference voltage is the ground voltage. The first end of the pull-up resistor is connected to a second power supply voltage. The second end of the pull-up resistor is connected to the first input end of the first comparator and then serves as the input end of the oil leakage detection module and is connected to the target microphone detection end. The second input end of the first comparator is used to input a second reference voltage. The output end of the first comparator serves as the output end of the oil leakage detection module and is connected to the input end of the protection execution module. The second reference voltage is the voltage of the target microphone detection end when the electronic cigarette microphone is in a non-leaking state. The pull-up resistor is used to apply a fixed pull-up voltage signal to the target microphone detection terminal during the oil leakage detection stage, and to collect the oil leakage detection electrical signal formed by the target microphone detection terminal after the pull-up voltage signal is applied; wherein, the pull-up voltage signal is the preset signal; The first comparator is used to compare the oil leakage detection electrical signal formed by the target microphone detection terminal after the pull-up voltage signal is applied with the second reference voltage. If the comparison result indicates that the oil leakage detection electrical signal has exceeded the threshold, the comparator sends an oil leakage conduction abnormality signal to the protection execution module.

6. The electronic cigarette microphone protection device according to any one of claims 1 to 3, characterized in that, The oil leak detection module includes a pull-down resistor and a second comparator; The first end of the pull-down resistor is connected to ground. The second end of the pull-down resistor is connected to the first input end of the second comparator and then serves as the input end of the oil leakage detection module, which is connected to the target microphone detection end. The second input end of the second comparator is used to input a third reference voltage. The output end of the second comparator serves as the output end of the oil leakage detection module and is connected to the input end of the protection execution module. The third reference voltage is the voltage at the target microphone detection end when the electronic cigarette microphone is in a non-leaking state. The pull-down resistor is used to apply a fixed pull-down voltage signal to the target microphone detection terminal during the oil leakage detection stage, and to collect the oil leakage detection electrical signal formed by the target microphone detection terminal after the pull-down voltage signal is applied; wherein, the pull-down voltage signal is the preset signal; The second comparator is used to compare the oil leakage detection electrical signal formed by the target microphone detection terminal after the pull-down voltage signal is applied with the third reference voltage. If the comparison result indicates that the oil leakage detection electrical signal has exceeded the threshold, an oil leakage conduction abnormality signal is sent to the protection execution module.

7. The electronic cigarette microphone protection device according to any one of claims 1 to 3, characterized in that, The oil leak detection module includes a second current source and a third comparator; the first reference voltage is the ground voltage. The power supply terminal of the second current source is used to input a third power supply voltage. The output terminal of the second current source is connected to the first input terminal of the third comparator and then serves as the input terminal of the oil leakage detection module and is connected to the target microphone detection terminal. The second input terminal of the third comparator is used to input a fourth reference voltage. The output terminal of the third comparator serves as the output terminal of the oil leakage detection module and is connected to the input terminal of the protection execution module. The fourth reference voltage is the voltage of the target microphone detection terminal when the electronic cigarette microphone is in a non-leaking state. The second current source is used to apply a second microcurrent signal to the target microphone detection end during the oil leakage detection phase of the electronic cigarette microphone protection device; the second microcurrent signal is the preset signal; The third comparator is used to compare the oil leakage detection electrical signal formed by the target microphone detection terminal after the second microcurrent signal is applied with the fourth reference voltage. If the comparison result indicates that the oil leakage detection electrical signal has exceeded the threshold, an oil leakage conduction abnormal signal is sent to the protection execution module.

8. The electronic cigarette microphone protection device according to any one of claims 1 to 3, characterized in that, The protection execution module is specifically used to control the heating wire of the electronic cigarette to stop heating when the oil leakage conduction abnormality signal is received.

9. The electronic cigarette microphone protection device according to any one of claims 1 to 3, characterized in that, The oil leakage detection module is also used to control the protection execution module to stop executing the preset electronic cigarette protection action when the electronic cigarette microphone is detected to have returned to a non-leaking state.

10. A method for protecting the microphone of an electronic cigarette, characterized in that, Applied to the electronic cigarette microphone protection device as described in any one of claims 1 to 9; the electronic cigarette microphone protection method includes: Time-division multiplexing control is implemented for the microphone detection stage and the oil leak detection stage in the same microphone detection channel; During the oil leak detection phase, a preset signal is applied to the target microphone detection end, and the oil leak detection electrical signal generated by the target microphone detection end after the preset signal is applied is collected. If the leak detection electrical signal is found to have exceeded the threshold, a preset electronic cigarette protection action is executed.

11. An electronic cigarette microphone protection system, characterized in that, It includes a main control module, a microphone detection module, and an electronic cigarette microphone protection device as described in any one of claims 1 to 9; the main control module is connected to the microphone detection module and the electronic cigarette microphone protection device respectively; The main control module is used to perform time-division multiplexing control of the microphone detection module and the electronic cigarette microphone protection device, which share the same microphone detection channel, for the microphone detection stage and the oil leakage detection stage. The microphone detection module is used to perform microphone detection on the electronic cigarette microphone during the microphone detection stage.

12. A chip, characterized in that, Includes the electronic cigarette microphone protection device as described in any one of claims 1 to 9, or includes the electronic cigarette microphone protection system as described in claim 11.

13. An electronic cigarette, characterized in that, It includes the electronic cigarette microphone protection device as described in any one of claims 1 to 9, or the electronic cigarette microphone protection system as described in claim 11, or the chip as described in claim 12.

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