Search

CN-122004544-A - Electronic cigarette microphone protection device, method, system, chip and electronic cigarette

CN122004544ACN 122004544 ACN122004544 ACN 122004544ACN-122004544-A

Abstract

The application provides an electronic cigarette microphone protection device, an electronic cigarette microphone protection method, an electronic cigarette microphone protection system, an electronic cigarette 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, wherein the oil leakage detection module is used for applying a preset signal to a target microphone detection end in an oil leakage detection stage and collecting an oil leakage detection electric signal which is formed by the target microphone detection end after the preset signal is applied and used for representing the resistance value of an oil leakage equivalent resistance, when the oil leakage detection electric signal is determined to generate threshold crossing change, an oil leakage conduction abnormal signal is sent to the protection execution module, the protection execution module is used for executing preset electronic cigarette protection action when the oil leakage conduction abnormal signal is received, and the oil leakage detection stage and the microphone detection stage of the electronic cigarette microphone are used for multiplexing the target microphone detection end in a time-sharing mode. According to the scheme, oil leakage detection and protection are realized from the aspect of electrical characteristics, and the protection effect is improved.

Inventors

  • ZHANG CHUNLIN
  • HE JIANXIONG

Assignees

  • 珠海楠欣半导体科技有限公司

Dates

Publication Date
20260512
Application Date
20260410

Claims (13)

  1. 1. The electronic cigarette microphone protection device is characterized by comprising an oil leakage detection module and a protection execution module; The input end of the oil leakage detection module is used as the detection end of the electronic cigarette microphone protection device and is connected with the target microphone detection end of the electronic cigarette microphone, and the target microphone detection end is a detection terminal of the microphone equivalent capacitance of the electronic cigarette microphone; The electronic cigarette microphone protection device comprises an electronic cigarette microphone protection device, an oil leakage detection module, a protection execution module, a target microphone detection end, an oil leakage detection module, a detection control module and a detection control module, wherein the oil leakage detection module is used for applying a preset signal to the target microphone detection end in an oil leakage detection stage of the electronic cigarette microphone protection device, collecting an oil leakage detection electric signal formed by the target microphone detection end after the preset signal is applied, and sending an oil leakage conduction abnormal signal to the protection execution module under the condition that the oil leakage detection electric signal is determined to have threshold-crossing change; The protection execution module is used for executing a preset electronic cigarette protection action under the condition that the oil leakage conduction abnormal signal is received.
  2. 2. The electronic cigarette microphone protection device according to claim 1, wherein microphone detection of the electronic cigarette microphone adopts a differential structure, two detection ends of a microphone detection module used for microphone detection in the electronic cigarette microphone are respectively connected with the target microphone detection end and the other microphone detection end of the electronic cigarette microphone under the differential structure, and a reference end of the oil leakage detection module is also used for being connected with the other microphone detection end of the electronic cigarette microphone, and the other microphone detection end of the electronic cigarette microphone is the other detection terminal of the microphone equivalent capacitor.
  3. 3. The electronic cigarette microphone protection device according to claim 1, wherein a microphone detection structure of the electronic cigarette microphone is adopted, a detection end of a microphone detection module used for microphone detection in the electronic cigarette microphone is connected with the target microphone detection end under the single-end detection structure, the other microphone detection end of the electronic cigarette microphone is connected with the ground, and the other microphone detection end of the electronic cigarette microphone is the other detection terminal of the microphone equivalent capacitor.
  4. 4. The electronic cigarette microphone protection device of any one of claims 1-3 wherein the oil leak detection module comprises a first current source and an analog-to-digital converter; The power supply end of the first current source is used for inputting a first power supply voltage, the output end of the first current source is connected with the input end of the analog-to-digital converter and then used as the input end of the oil leakage detection module to be connected with the target microphone detection end, and the output end of the analog-to-digital converter is used as the output end of the oil leakage detection module to be connected with the input end of the protection execution module; the first current source is used for applying a first micro-current signal to the target microphone detection end in the oil leakage detection stage of the electronic cigarette microphone protection device, wherein the first micro-current signal is the preset signal; The analog-to-digital converter is used for collecting an oil leakage detection electric signal formed by the target microphone detection end after the first micro-current signal is applied, performing analog-to-digital conversion on the oil leakage detection electric signal, comparing the digital oil leakage detection electric signal obtained by conversion with a preset abnormal threshold value, and sending an oil leakage conduction abnormal signal to the protection execution module when the threshold crossing change is determined according to a comparison result.
  5. 5. The electronic cigarette microphone protection device of any one of claims 1-3, wherein the oil leak detection module comprises a pull-up resistor and a first comparator; the first end of the pull-up resistor is connected with a second power supply voltage, the second end of the pull-up resistor is connected with the first input end of the first comparator and then is used as the input end of the oil leakage detection module to be connected with the target microphone detection end, and the second input end of the first comparator is used for inputting a second reference voltage; The pull-up resistor is used for applying a fixed pull-up voltage signal to the target microphone detection end in the oil leakage detection stage and collecting an oil leakage detection electric signal formed by the target microphone detection end after the pull-up voltage signal is applied, wherein the pull-up voltage signal is the preset signal; the first comparator is used for comparing an oil leakage detection electric signal formed by the target microphone detection end after the pull-up voltage signal is applied with the second reference voltage, and sending an oil leakage conduction abnormal signal to the protection execution module under the condition that the comparison result represents that the oil leakage detection electric signal is changed beyond the threshold.
  6. 6. A electronic cigarette microphone protection device according to any of claims 1 to 3, wherein the oil leak detection module comprises a pull-down resistor and a second comparator; the first end of the pull-down resistor is connected with the ground, the second end of the pull-down resistor is connected with the first input end of the second comparator and then is used as the input end of the oil leakage detection module to be connected with the target microphone detection end, the second input end of the second comparator is used for inputting a third reference voltage, and the output end of the second comparator is used as the output end of the oil leakage detection module to be connected with the input end of the protection execution module, wherein the third reference voltage is the voltage of the target microphone detection end in the non-oil leakage state of the electronic microphone; The pull-down resistor is used for applying a fixed pull-down voltage signal to the target microphone detection end in the oil leakage detection stage and collecting an oil leakage detection electric signal formed by the target microphone detection end after the pull-down voltage signal is applied, wherein the pull-down voltage signal is the preset signal; The second comparator is configured to compare an oil leakage detection electrical signal formed by the target microphone detection end after the pull-down voltage signal is applied with the third reference voltage, and send an oil leakage conduction abnormal signal to the protection execution module when the comparison result indicates that the oil leakage detection electrical signal is changed beyond a threshold.
  7. 7. The electronic cigarette microphone protection device of any one of claims 1-3 wherein the oil leak detection module includes a second current source and a third comparator; The second input end of the third comparator is used for inputting a fourth reference voltage, and the output end of the third comparator is used as the output end of the oil leakage detection module and is connected with the input end of the protection execution module, wherein the fourth reference voltage is the voltage of the target microphone detection end in the non-oil leakage state of the electronic microphone; the second current source is used for applying a second micro-current signal to the target microphone detection end in the oil leakage detection stage of the electronic cigarette microphone protection device, wherein the second micro-current signal is the preset signal; And the third comparator is used for comparing an oil leakage detection electric signal formed by the target microphone detection end after the second micro-current signal is applied with the fourth reference voltage, and sending an oil leakage conduction abnormal signal to the protection execution module under the condition that the comparison result represents that the oil leakage detection electric signal is changed beyond the threshold.
  8. 8. The electronic cigarette microphone protection device according to any one of claims 1 to 3, wherein the protection execution module is specifically configured to control a heating wire of the electronic cigarette to stop heating when the oil leakage conduction abnormal signal is received.
  9. 9. A device according to any one of claims 1 to 3, wherein the oil leak detection module is further configured to control the protection execution module to stop executing the preset electronic cigarette protection action if it is detected that the electronic cigarette microphone is restored to a non-oil leak state.
  10. 10. An electronic cigarette microphone protection method is characterized by being applied to the electronic cigarette microphone protection device according to any one of claims 1 to 9, and comprises the following steps: Carrying out time division multiplexing control of a microphone detection stage and an oil leakage detection stage in the same microphone detection channel; applying a preset signal to the target microphone detection end in the oil leakage detection stage, and collecting an oil leakage detection electric signal formed by the target microphone detection end after the preset signal is applied; and under the condition that the oil leakage detection electric signal is determined to generate threshold crossing change, executing a preset electronic cigarette protection action.
  11. 11. An electronic cigarette microphone protection system is characterized by comprising a main control module, a microphone detection module and the electronic cigarette microphone protection device according to any one of claims 1 to 9, wherein the main control module is respectively connected with the microphone detection module and the electronic cigarette microphone protection device; The main control module is used for carrying out time-sharing multiplexing control of a microphone detection stage and an oil leakage detection stage on the microphone detection module and the electronic cigarette microphone protection device which share the same microphone detection channel; the microphone detection module is used for detecting the microphone of the electronic cigarette in the microphone detection stage.
  12. 12. A chip comprising an electronic cigarette head protection device according to any one of claims 1 to 9 or comprising an electronic cigarette head protection system according to claim 11.
  13. 13. An electronic cigarette comprising an electronic cigarette head guard as claimed in any one of claims 1 to 9, or comprising an electronic cigarette head guard system as claimed in claim 11, or comprising a chip as claimed in claim 12.

Description

Electronic cigarette microphone protection device, method, system, chip and electronic cigarette Technical Field The application relates to the technical field of electronic cigarettes, in particular to an electronic cigarette microphone protection device, an electronic cigarette microphone protection method, an electronic cigarette microphone protection system, a chip and an electronic cigarette. Background Electronic cigarettes are electronic products that mimic cigarettes. In electronic cigarette products, the force and direction of blowing and sucking air flow are generally indicated by the capacitance change of an electronic cigarette microphone, so that the capacitance can be converted into a digital signal carrying frequency information, and then the digital signal is processed to obtain the capacitance and the change quantity thereof, thereby obtaining the force and direction of blowing and sucking current. Under the scenes of long-term use, transportation vibration, temperature difference change or condensation reflux and the like of the electronic cigarette, the situation that liquid leakage or liquid bridge conduction is easy to occur in the microphone area. Under the scene, an abnormal low-resistance passage may appear between the microphone detection pins, which leads to misjudgment of the system and triggers unexpected work, thereby bringing malfunction and safety risks. Aiming at the oil leakage phenomenon of the microphone area, in the related technology, the structures such as a seal, a liquid guide structure, an oil-proof film and the like are adopted for leakage prevention, the complete leakage prevention cannot be ensured depending on the separation of structural members, and the protection effect is poor. Disclosure of Invention The application provides an electronic cigarette microphone protection device, an electronic cigarette microphone protection method, an electronic cigarette microphone protection system, an electronic cigarette microphone chip and an electronic cigarette, and aims to solve the problem that oil leakage protection effect is poor due to the fact that a structural member is blocked in the related art. In a first aspect, the application provides an electronic cigarette microphone protection device, which comprises an oil leakage detection module and a protection execution module; The input end of the oil leakage detection module is used as the detection end of the electronic cigarette microphone protection device and is connected with the target microphone detection end of the electronic cigarette microphone, and the target microphone detection end is a detection terminal of the microphone equivalent capacitance of the electronic cigarette microphone; The electronic cigarette microphone protection device comprises an electronic cigarette microphone protection device, an oil leakage detection module, a protection execution module, a target microphone detection end, an oil leakage detection module, a detection control module and a detection control module, wherein the oil leakage detection module is used for applying a preset signal to the target microphone detection end in an oil leakage detection stage of the electronic cigarette microphone protection device, collecting an oil leakage detection electric signal formed by the target microphone detection end after the preset signal is applied, and sending an oil leakage conduction abnormal signal to the protection execution module under the condition that the oil leakage detection electric signal is determined to have threshold-crossing change; The protection execution module is used for executing a preset electronic cigarette protection action under the condition that the oil leakage conduction abnormal signal is received. In an alternative design, the microphone detection of the electronic cigarette microphone adopts a differential structure, two detection ends of a microphone detection module used for performing microphone detection in the electronic cigarette microphone are respectively connected with the target microphone detection end and the other microphone detection end of the electronic cigarette microphone under the differential structure, the reference end of the oil leakage detection module is also used for being connected with the other microphone detection end of the electronic cigarette microphone, and the other microphone detection end of the electronic cigarette microphone is the other detection terminal of the microphone equivalent capacitance. In an alternative design, the microphone detection of the electronic cigarette microphone adopts a single-end detection structure, the detection end of the microphone detection module used for performing microphone detection in the electronic cigarette microphone is connected with the target microphone detection end under the single-end detection structure, the other microphone detection end of the electronic cigarette microphone is connected with the ground, a