Child lock control circuit and electronic cigarette
Through the combined circuit design of microphone, switch module, power supply, heating element and controller, the problems of high hardware cost and accidental touch of electronic cigarette child lock are solved, thus preventing children from accidentally inhaling and reducing costs.
Patent Information
- Application Number
- CN202421297435.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The child lock hardware of existing e-cigarettes is expensive and can be easily locked or unlocked by mistake, making it difficult to effectively prevent children from accidentally inhaling.
The combined circuit design of microphone, switch module, power supply, heating element and controller is adopted. The child lock state is switched by detecting the suction frequency and amplitude, which reduces hardware cost and prevents accidental touch.
It effectively prevents children from accidentally locking or unlocking the device, reduces the hardware cost of the child lock, and improves the safety and reliability of the e-cigarette.
Smart Images
Figure CN223437905U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electronic cigarettes, and in particular to a child lock control circuit and an electronic cigarette. BACKGROUND
[0002] An electronic cigarette is an electronic device that simulates a real cigarette, which replaces the traditional cigarette by simulating the taste and smoke of a real cigarette. The electronic cigarette not only saves the expenses of consumers, but also reduces the harm of "second-hand smoke". In order to prevent children from accidentally inhaling the electronic cigarette, the electronic cigarette generally has a child lock function to prevent children from accidentally inhaling and touching. In the related art, the child lock of the electronic cigarette is generally a hardware lock, which is a mechanical lock. The mechanical lock increases the hardware cost of the product and is easy to be accidentally locked or unlocked, and therefore, how to reduce the hardware cost of the child lock while preventing accidental touching has become a technical problem to be solved. CONTENT OF THE UTILITY MODEL
[0003] The present application aims to at least solve one of the technical problems in the prior art. To this end, the present application provides a child lock control circuit and an electronic cigarette, which solve the problems of high hardware cost and easy accidental locking or unlocking of the child lock of the electronic cigarette.
[0004] In a first aspect, the present application provides a child lock control circuit applied to an electronic cigarette, comprising: a microphone, a switch module, a power supply, a heating element and a controller.
[0005] A first end of the microphone is connected to the controller, and a second end of the microphone is grounded; wherein the capacitance of the microphone changes after a puffing action is triggered.
[0006] A first end of the switch module is connected to the controller, a second end of the switch module is connected to the power supply, and a third end of the switch module is connected to a first end of the heating element.
[0007] The first end of the heating element is connected to the third end of the switch module, and a second end of the heating element is grounded.
[0008] The controller is connected to the first end of the microphone and the first end of the switch module, respectively, and is configured to obtain a puffing frequency and a puffing amplitude according to the change of the capacitance of the microphone, and switch a child lock state if the puffing frequency and the puffing amplitude meet a preset condition, so as to make the switch module cut off or connect the connection between the power supply and the heating element.
[0009] In some embodiments, the child lock control circuit further comprises a light source module.
[0010] The first end of the light source module is connected with the power supply, and the second end of the light source module is connected with the controller. When the child lock state is the start child lock state, the controller controls the light source module to emit a first light signal according to a preset first signal configuration parameter. When the child lock state is the release child lock state, the controller controls the light source module to emit a second light signal according to a preset second signal configuration parameter.
[0011] In some embodiments, the light source module includes a light-emitting diode and a first resistor.
[0012] The first end of the light-emitting diode is connected with the power supply, the second end of the light-emitting diode is connected with the first end of the first resistor, and the second end of the first resistor is connected with the controller.
[0013] In some embodiments, the child lock control circuit further includes a short circuit detection module.
[0014] The first end of the short circuit detection module is connected with the controller, and the second end of the short circuit detection module is connected with the first end of the heating element. The short circuit detection module is used for detecting whether the heating element is short-circuited.
[0015] In some embodiments, the short circuit detection module includes a second resistor.
[0016] The first end of the second resistor is connected with the controller, and the second end of the second resistor is connected with the first end of the heating element.
[0017] In some embodiments, the child lock control circuit further includes a filter module.
[0018] The first end of the filter module is connected with the controller, and the second end of the filter module is connected with the power supply.
[0019] In some embodiments, the filter module includes a first capacitor and a fourth resistor.
[0020] The first end of the first capacitor is connected with the controller and the first end of the fourth resistor respectively, the second end of the first capacitor is grounded, and the second end of the fourth resistor is connected with the power supply.
[0021] In some embodiments, the switch module includes a MOS tube and a third resistor.
[0022] The gate of the MOS tube is connected with the controller and the first end of the third resistor respectively, the source of the MOS tube is connected with the second end of the third resistor and the power supply respectively, and the drain of the MOS tube is connected with the first end of the heating element.
[0023] In some embodiments, the controller is a PMS160 single-chip microcomputer.
[0024] In a second aspect, the embodiments of the present application provide an electronic cigarette, which comprises the child lock control circuit according to the first aspect
[0025] The child lock control circuit provided by the embodiments of the present application comprises a microphone, a switch module, a power supply, a heating element and a controller. The first end of the microphone is connected to the controller, and the second end of the microphone is grounded. After a puffing action is triggered, the capacitance of the microphone changes. The first end of the switch module is connected to the controller, the second end of the switch module is connected to the power supply, and the third end of the switch module is connected to the first end of the heating element. The first end of the heating element is connected to the third end of the switch module, and the second end of the heating element is grounded. The controller is connected to the first end of the microphone and the first end of the switch module respectively. Since children are difficult to make the puffing frequency and the puffing amplitude meet the preset condition, it is difficult for them to mistakenly trigger the locking or unlocking, the hardware cost of the child lock is reduced, and the mistaken triggering is prevented
[0026] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0027] The present application will be further described below in conjunction with the drawings and embodiments, in which:
[0028] Figure 1 A module schematic circuit structure diagram of the child lock control circuit provided by the embodiments of the present application is shown in the figure.
[0029] Figure 2 A module schematic diagram of the child lock control circuit provided by the second embodiment of the present application is shown in the figure.
[0030] Figure 3 A circuit structure diagram of the child lock control circuit provided by the embodiments of the present application is shown in the figure.
[0031] Figure 4 A module schematic diagram of the child lock control circuit provided by the third embodiment of the present application is shown in the figure. DETAILED DESCRIPTION
[0032] The embodiments of the present application are described below in detail, examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.
[0033] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.
[0034] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.
[0035] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical scheme.
[0036] In the description of the present application, the description of the reference terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0037] In order to prevent children from accidentally inhaling electronic cigarettes, electronic cigarettes generally have a child lock function to prevent children from accidentally inhaling and touching. In the related art, the child lock of the electronic cigarette is generally locked by hardware, and the hardware lock is mechanically locked, which increases the hardware cost of the product and is easy to be accidentally touched to lock or unlock.
[0038] Based on this, the child lock control circuit and electronic cigarette are provided in the embodiments of the present application, which are specifically described as follows.
[0039] Figure 1 is a module schematic diagram of the child lock control circuit provided by the embodiment of the application, as shown in Figure 1 The child lock control circuit provided by the embodiment of the application comprises: a microphone 11, a switch module 14, a power supply 13, a heating element 15 and a controller 12.
[0040] The first end of the microphone 11 is connected to the controller 12, and the second end of the microphone 11 is grounded; wherein the capacitance of the microphone 11 changes after triggering the puffing action; wherein the microphone 11 is a capacitive microphone, and the principle of the capacitive microphone responding to external action is that the deformation of the conductive diaphragm caused by airflow changes the distance between the conductive diaphragm and the plate, thereby causing the capacitance to change. Specifically, after triggering the puffing action, the distance between the conductive diaphragm and the plate becomes smaller, and the capacitance will become larger.
[0041] The first end of the switch module 14 is connected to the controller 12, the second end of the switch module 14 is connected to the power supply 13, and the third end of the switch module 14 is connected to the first end of the heating element 15; when the switch module 14 is closed, the connection between the power supply 13 and the heating element 15 is turned on, thereby heating the heating element 15, and the heating element 15 converts the liquid in the electronic cigarette liquid reservoir into smoke after being heated. When the switch module 14 is disconnected, the connection between the power supply 13 and the heating element 15 is disconnected, thereby failing to heat the heating element 15.
[0042] The first end of the heating element 15 is connected to the third end of the switch module 14, and the second end of the heating element 15 is grounded; wherein the heating element 15 can be a heating wire or a heating sheet.
[0043] The controller 12 is connected to the first end of the microphone 11 and the first end of the switch module 14, respectively, and the controller 12 is configured to obtain the puffing frequency and the puffing amplitude according to the capacitance change of the microphone 11, and if the puffing frequency and the puffing amplitude meet the preset condition, the child lock state is switched, so that the switch module 14 cuts off or connects the connection between the power supply 13 and the heating element 15.
[0044] Specifically, when the user puffs the electronic cigarette, the distance between the conductive diaphragm and the plate becomes smaller, and the capacitance becomes larger, and when the user stops puffing, the distance between the conductive diaphragm and the plate returns to normal, and the capacitance becomes the initial value. Therefore, the controller 12 can determine the number of puffs by determining the number of times the capacitance changes and returns to the initial value. The controller 12 can also count the interval of each puff to obtain the puffing frequency according to the number of puffs and the interval of each puff.
[0045] When the user puffs harder, the distance between the conductive film and the electrode plate is smaller, the capacitance is larger, and the charging and discharging time of the capacitor is longer. Therefore, the puffing amplitude can be obtained by an oscillation circuit and a counter in the controller 12. For example, the capacitor charging and discharging causes the oscillation circuit to generate pulses, and the counter records the number of pulses. By testing, when the number of pulses is greater than a certain number, it indicates that the puffing amplitude is greater than 300 pa. The certain number is saved as a threshold value for comparison by the controller 12.
[0046] In an example, if the preset condition is that 3 puffing actions occur within 2 seconds, and the puffing amplitude of each puffing action is greater than 300 pa. When the controller 12 obtains the puffing frequency and the puffing amplitude according to the capacitance change of the microphone 11, it is determined whether the puffing frequency is 3 puffing actions within 2 seconds and the puffing amplitude is greater than 300 pa. If so, it indicates that the puffing frequency and the puffing amplitude meet the preset condition, and the child lock state is switched to make the switch module 14 cut off or connect the connection between the power supply 13 and the heating element 15. Since the normal vaping frequency is generally 1 puffing action in about 10 seconds, and the puffing amplitude is about 100 pa when vaping normally, the child lock function of preventing children from accidentally vaping is achieved without triggering the locking or unlocking when children do not know the preset condition. In an example, the user can modify the preset condition according to the demand, so as to prevent the current preset condition from being leaked.
[0047] It should be noted that if the electronic cigarette is in the unlocked state, the controller 12 detects that the user triggers a puffing action, and the puffing frequency and the puffing amplitude meet the preset condition, the child lock state is switched to the start child lock state. Specifically, when the electronic cigarette is in the unlocked state, the user normally uses the electronic cigarette, and when using it, the user can trigger 3 puffing actions within 2 seconds, and the puffing amplitude of each puffing action is greater than 300 pa, so as to switch the child lock state to the start child lock state. In the start child lock state, even if a puffing action is triggered, the electronic cigarette cannot be used if the preset condition is not met. At this time, the controller 12 controls the switch module 14 to cut off the connection between the power supply 13 and the heating element 15.
[0048] In the start child lock state, the user can normally use the electronic cigarette by triggering 3 puffing actions within 2 seconds, and the puffing amplitude of each puffing action is greater than 300 pa, so as to switch the child lock state to the unlocked state. At this time, when the user triggers a puffing action, the controller 12 controls the switch module 14 to connect the power supply 13 and the heating element 15, so that the electronic cigarette can be normally used.
[0049] The child lock control circuit provided in the embodiments of the present application comprises a microphone 11, a switch module 14, a power supply 13, a heating element 15 and a controller 12; a first end of the microphone 11 is connected to the controller 12, and a second end of the microphone 11 is grounded; wherein the capacitance of the microphone 11 changes after a puffing action is triggered; a first end of the switch module 14 is connected to the controller 12, a second end of the switch module 14 is connected to the power supply 13, and a third end of the switch module 14 is connected to a first end of the heating element 15; the first end of the heating element 15 is connected to the third end of the switch module 14, and a second end of the heating element 15 is grounded; the controller 12 is connected to the first end of the microphone 11 and the first end of the switch module 14 respectively, and is configured to obtain a puffing frequency and a puffing amplitude according to the capacitance change of the microphone 11, and switch a child lock state if the puffing frequency and the puffing amplitude meet preset conditions, so as to make the switch module 14 cut off or connect the connection between the power supply 13 and the heating element 15. Since it is difficult for children to make the puffing frequency and the puffing amplitude meet the preset conditions, it is difficult for children to mistakenly trigger the locking or unlocking, thereby reducing the hardware cost of the child lock while preventing accidental triggering.
[0050] In some embodiments, as shown in Figure 2 the child lock control circuit further comprises a light source module 16, a first end of the light source module 16 is connected to the power supply 13, and a second end of the light source module 16 is connected to the controller 12; when the child lock state is a start child lock state, the controller 12 controls the light source module 16 to emit a first light signal according to preset first signal configuration parameters, and when the child lock state is a release child lock state, the controller 12 controls the light source module 16 to emit a second light signal according to preset second signal configuration parameters.
[0051] In the embodiments, the controller 12 controls the light source module 16 to emit different light signals in different situations, so that the user can determine the child lock state of the electronic cigarette after switching according to different light signals. For example, the first light signal is that the light source module 16 flashes four times, and the second light signal is that the light source module 16 flashes three times. When the electronic cigarette is switched from the release child lock state to the start child lock state, the light source module 16 flashes four times. When the electronic cigarette is switched from the start child lock state to the release child lock state, the light source module 16 flashes three times.
[0052] In some embodiments, as shown in Figure 3As shown, the light source module 16 includes a light-emitting diode D1 and a first resistor R1; the first end (positive electrode) of the light-emitting diode D1 is connected with the power supply B+, the second end (negative electrode) of the light-emitting diode D1 is connected with the first end of the first resistor R1, and the second end of the first resistor R1 is connected with the first pin of the controller 12. When the first pin of the controller 12 outputs a high level, since both ends of the light-emitting diode D1 are high levels, the light-emitting diode D1 is in a cut-off state, at this time, the light-emitting diode D1 does not emit light. When the first pin of the controller 12 outputs a low level, the light-emitting diode D1 is in a conduction state, at this time, the light-emitting diode D1 emits light. Therefore, the controller 12 can control the number of flickers of the light-emitting diode D1 by controlling the first pin to output a high level or a low level.
[0053] In some embodiments, as shown in Figure 4 The child lock control circuit further includes a short circuit detection module 17, the first end of the short circuit detection module 17 is connected with the controller 12, and the second end of the short circuit detection module 17 is connected with the first end of the heating element 15. The short circuit detection module 17 is used for detecting whether the heating element 15 is short-circuited.
[0054] Specifically, as shown in Figure 3 The short circuit detection module 17 includes a second resistor R2, the first end of the second resistor R2 is connected with the fourth pin of the controller 12, and the second end of the second resistor R2 is connected with the first end of the heating element 15. When the heating element 15 is short-circuited, the third end of the switch module 14 is directly grounded, at this time, the third end of the switch module 14 is a low level. When the heating element 15 is normal, the third end of the switch module 14 is a high level. Therefore, the controller 12 can detect a high level or a low level through the short circuit detection module 17, so as to judge whether the heating element 15 is short-circuited, so that the electronic cigarette can be controlled to stop working in time when the heating element 15 is short-circuited, thereby preventing the electronic cigarette from continuing to work and causing damage or safety problems.
[0055] In some embodiments, as shown in Figure 3 The child lock control circuit further includes a filter module 18, the first end of the filter module 18 is connected with the fifth pin of the controller 12, and the second end of the filter module 18 is connected with the power supply B+. The filter module 18 can remove noise and clutter signals in the power supply B+, so that the voltage output by the power supply B+ is more stable.
[0056] Specifically, the filter module 18 includes a first capacitor C1 and a fourth resistor R4, the first end of the first capacitor C1 is connected with the fifth pin of the controller 12 and the first end of the fourth resistor R4 respectively, the second end of the first capacitor C1 is grounded, and the second end of the fourth resistor R4 is connected with the power supply B+. In this embodiment, the filter module 18 is an RC filter circuit, and the power supply voltage is filtered and denoised through the RC filter circuit.
[0057] In some embodiments, as shown in Figure 3 The switch module 14 includes a MOS tube Q1 and a third resistor R3, the gate of the MOS tube Q1 is connected with the sixth pin of the controller 12 and the first end of the third resistor R3 respectively, the source of the MOS tube Q1 is connected with the second end of the third resistor R3 and the power supply B+ respectively, and the drain of the MOS tube Q1 is connected with the first end of the heating element 15.
[0058] Specifically, when the user triggers the puffing action in the state that the child lock is released, the sixth pin of the controller 12 outputs a high level, the MOS tube Q1 is closed, the connection between the power supply B+ and the heating element 15 is turned on, the power supply B+ heats the heating element 15, and the heating element 15 converts the liquid in the liquid reservoir of the electronic cigarette into smoke after being heated. When the user stops the puffing action, the sixth pin of the controller 12 outputs a low level, the MOS tube Q1 is disconnected, the connection between the power supply B+ and the heating element 15 is cut off, and the heating element 15 cannot be heated.
[0059] In some embodiments, the controller 12 is a PMS160 single-chip microcomputer, and the PMS160 is a high-performance 16-bit single-chip microcomputer. The chip adopts a high-performance RISC architecture and has excellent performance in low power consumption, high reliability, high integration and high performance.
[0060] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.
Claims
1. A child lock control circuit, characterized in that: Applied to electronic cigarettes, the child lock control circuit includes: a microphone, a switch module, a power supply, a heating element, a short circuit detection module and a controller; The first end of the microphone is connected to the controller, and the second end of the microphone is grounded; wherein, after the puffing action is triggered, the capacitance of the microphone changes; The first end of the switch module is connected to the controller, the second end of the switch module is connected to the power supply, and the third end of the switch module is connected to the first end of the heating element; The first end of the heating element is connected to the third end of the switch module, and the second end of the heating element is grounded; The controller is connected to the first end of the microphone and the first end of the switch module respectively, and is used to obtain the puff frequency and the puff amplitude according to the change of the capacitance of the microphone. If the puff frequency and the puff amplitude meet the preset conditions, the controller switches the child lock state to make the switch module cut off or connect the connection between the power supply and the heating element; The short circuit detection module includes a second resistor; a first end of the second resistor is connected to the controller, and a second end of the second resistor is connected to the first end of the heating element. The short circuit detection module is used to detect whether the heating element is short-circuited.
2. The child lock control circuit according to claim 1, characterized in that: The child lock control circuit also includes a light source module; The first end of the light source module is connected to the power supply, and the second end of the light source module is connected to the controller. When the child lock state is the child lock activation state, the controller controls the light source module to emit a first light signal according to the preset first signal configuration parameters. When the child lock state is the child lock release state, the controller controls the light source module to emit a second light signal according to the preset second signal configuration parameters.
3. The child lock control circuit according to claim 2, characterized in that: The light source module includes a light emitting diode and a first resistor; The first end of the light emitting diode is connected to the power supply, the second end of the light emitting diode is connected to the first end of the first resistor, and the second end of the first resistor is connected to the controller.
4. The child lock control circuit according to claim 1, characterized in that: The child lock control circuit further includes a filtering module; A first end of the filter module is connected to the controller, and a second end of the filter module is connected to the power supply.
5. The child lock control circuit according to claim 4, characterized in that: The filtering module includes a first capacitor and a fourth resistor; The first end of the first capacitor is connected to the controller and the first end of the fourth resistor respectively, the second end of the first capacitor is grounded, and the second end of the fourth resistor is connected to the power supply.
6. The child lock control circuit according to claim 1, characterized in that: The switch module includes a MOS tube and a third resistor; The gate of the MOS tube is connected to the controller and the first end of the third resistor respectively, the source of the MOS tube is connected to the second end of the third resistor and the power supply respectively, and the drain of the MOS tube is connected to the first end of the heating element.
7. The child lock control circuit according to claim 1, characterized in that: The controller is a PMS160 single chip microcomputer.
8. An electronic cigarette, characterized in that: The electronic cigarette comprises the child lock control circuit according to any one of claims 1 to 7.