Aerosol-generating device

Abstract

The application discloses an aerosol generating device, which comprises a shell, a temperature detection element and a controller. The shell is provided with an air passage, and the temperature detection element is arranged in the air passage. The controller is used for acquiring a detection signal collected by the temperature detection element, and performing puffing detection based on the detection signal to obtain a puffing detection result. The puffing detection result includes whether a puffing action occurs. Since the temperature change of the air passage is usually caused by the entry of cold air into the aerosol generating device when a user puffs, the puffing detection is performed based on the detection signal collected by the temperature detection element in the air passage, so that the detection accuracy is high and misjudgment can be avoided. Only the temperature detection element needs to be arranged, the cost is low, the puffing detection result can be obtained by analyzing the detection signal collected by the temperature detection element, the hardware structure is simple and the assembly difficulty is low. In addition, the temperature detection element does not affect the cleaning of the air passage, can avoid the accumulation of tobacco tar and has good corrosion resistance.

Description

Technical Field

[0001] This application relates to the field of aerosol technology, and more specifically, to an aerosol generating apparatus. Background Technology

[0002] In related technologies, when performing suction testing on HNB devices, one or more airflow sensors are typically used to detect the number of suction ports.

[0003] However, when the accuracy of the airflow sensor is low or the environment changes (such as changes in humidity or temperature), measurement errors may occur in the airflow sensor, affecting the accuracy of the detection. Summary of the Invention

[0004] This application provides an aerosol generating device that can avoid misjudgment and ensure detection accuracy.

[0005] One embodiment of this application discloses an aerosol generating apparatus, which includes a housing, a temperature detection element, and a controller. The housing has an air passage, and the temperature detection element is disposed in the air passage. The controller is used to: acquire a detection signal collected by the temperature detection element; and perform a suction detection based on the detection signal to obtain a suction detection result, wherein the suction detection result includes whether a suction action has occurred.

[0006] In some implementations, the step of performing aspiration detection based on the detection signal to obtain aspiration detection result includes: determining the changing trend of the detection signal based on a series of consecutively acquired detection signals; and performing aspiration detection based on the changing trend to obtain the aspiration detection result.

[0007] In some implementations, determining the changing trend of the detection signal based on a plurality of consecutively acquired detection signals includes: taking the derivative of the plurality of consecutively acquired detection signals to obtain the rate of change of the detection signal at each time step; and determining the changing trend based on the rate of change at each time step.

[0008] In some implementations, determining the trend of change based on the rate of change includes: determining the trend of change as a preset trend when the rate of change or the integral value of the rate of change over a preset time period is greater than a preset rate of change.

[0009] In some implementations, the controller is also configured to filter out negative rates of change from the rates of change at each of the various time points.

[0010] In some implementations, determining the changing trend of the detection signals based on a plurality of consecutively acquired detection signals includes: differentiating the plurality of consecutively acquired detection signals to obtain the rate of change of the detection signals at each time step; differentiating the plurality of consecutively acquired rate of change again to obtain a trend value; and determining the changing trend based on the trend value.

[0011] In some implementations, determining the trend based on the trend value includes: if the trend value or the integral value of the trend value over a preset time period is greater than a preset trend value, determining the trend as a preset trend.

[0012] In some embodiments, the controller is further configured to: determine that suction has been performed if the trend of change matches a preset trend.

[0013] In some embodiments, the aerosol generating device further includes a suction detection component, which includes the temperature detection element and a first heating element. Before acquiring the detection signal collected by the temperature detection element, the controller is further configured to control the first heating element to heat the temperature detection element.

[0014] In some embodiments, the aerosol generating apparatus further includes a second heating element and a receiving element, the receiving element having a receiving cavity, and the second heating element being used to heat the receiving cavity.

[0015] In some embodiments, the temperature sensing element is disposed in the airway near the second heating element, and the controller is further configured to control the second heating element to preheat during the preheating phase, during which the controller does not perform the suction detection.

[0016] The aerosol generating device according to this application includes a housing, a temperature detection element, and a controller. The housing has an air passage to ensure that the internal pressure of the aerosol generating device remains balanced. The temperature detection element is placed in the air passage to monitor temperature changes. By acquiring the detection signal collected by the temperature detection element, a suction detection is performed based on the detection signal to obtain a suction detection result, which includes whether a suction action has occurred. Since the temperature change in the air passage is usually caused by cold air entering the aerosol generating device when the user suctions, suction detection based on the detection signal collected by the temperature detection element in the air passage has high accuracy and can avoid false judgments. Only a temperature detection element is required, resulting in low cost. The suction detection result can be obtained by analyzing the detection signal collected by the temperature detection element, resulting in a simple hardware structure and low assembly difficulty. In addition, the temperature detection element does not affect the cleanliness of the air passage, avoids the accumulation of e-liquid, and has good corrosion resistance.

[0017] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0019] Figure 1 This is a schematic diagram illustrating the application scenario of the aerosol generating apparatus according to certain embodiments of this application.

[0020] Figure 2 This is a schematic diagram of a scene of an aerosol generating apparatus according to certain embodiments of this application;

[0021] Figure 3 This is a schematic diagram of a scene of an aerosol generating apparatus according to certain embodiments of this application;

[0022] Figure 4 This is a schematic flow diagram of an aerosol generating apparatus according to certain embodiments of this application;

[0023] Figure 5 This is a schematic flow diagram of an aerosol generating apparatus according to certain embodiments of this application;

[0024] Figure 6 This is a schematic flow diagram of an aerosol generating apparatus according to certain embodiments of this application;

[0025] Figure 7 This is a schematic flow diagram of an aerosol generating apparatus according to certain embodiments of this application;

[0026] Figure 8 This is a schematic flow diagram of an aerosol generating apparatus according to certain embodiments of this application;

[0027] Figure 9 This is a schematic flow diagram of an aerosol generating apparatus according to certain embodiments of this application;

[0028] Figure 10 This is a schematic diagram of a scene of an aerosol generating apparatus according to certain embodiments of this application;

[0029] Figure 11 This is a schematic diagram of a scene of an aerosol generating apparatus according to certain embodiments of this application;

[0030] Figure 12 This is a schematic flow diagram of an aerosol generating apparatus according to certain embodiments of this application;

[0031] Figure 13This is a schematic diagram of a scene of an aerosol generating apparatus according to certain embodiments of this application;

[0032] Figure 14 This is a schematic diagram of a scene of an aerosol generating apparatus according to certain embodiments of this application;

[0033] Figure 15 This is a schematic flow diagram of an aerosol generating apparatus according to certain embodiments of this application;

[0034] Figure 16 This is a schematic flow diagram of an aerosol generating apparatus according to certain embodiments of this application;

[0035] Figure 17 This is a schematic diagram of a scene of an aerosol generating apparatus according to certain embodiments of this application;

[0036] Figure 18 This is a schematic diagram of a scene of an aerosol generating apparatus according to certain embodiments of this application;

[0037] Figure 19 This is a schematic flow diagram of an aerosol generating apparatus according to certain embodiments of this application;

[0038] Figure 20 This is a schematic diagram of the suction detection device of an aerosol generation apparatus according to certain embodiments of this application;

[0039] Figure 21 This is a schematic diagram illustrating the connection state of a non-volatile computer-readable storage medium and a processor in certain embodiments of this application.

[0040] Explanation of key component reference numerals:

[0041] 1000, Aerosol generation system; 100, Aerosol generation device; 101, Power supply module; 102, Suction detection module; 103, Heating control module; 104, Interaction module; 105, Control module; 10, Housing; 11, Air passage; 20, Temperature detection element; 30, Controller; 40, First heating element; 41, Second heating element; 50, Receptacle; 51, Receptacle cavity; 200, Aerosol generation product. Detailed Implementation

[0042] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0043] To facilitate understanding of this application, the following explanations are provided for the terms and background information used in this application:

[0044] Heated non-burning (HNB) appliances (e.g., electronic cigarettes) are devices that use circuitry to control and increase the temperature of a heating element (e.g., a thermistor) to bake (heat) aerosol-generating products, thereby causing the products to release aerosols. However, the total amount of aerosols released after the aerosol-generating product is baked or heated is limited.

[0045] Since the heating time of aerosol-generating products is directly proportional to the amount of aerosol released, current HNB (Heated NB) appliances typically determine whether the aerosol-generating product has completely released aerosols based on the total heating time of the product. For example, if the total heating time of the same aerosol-generating product by the HNB appliance is greater than or equal to a preset time, it is determined that the aerosol-generating product has been completely heated, and all the aerosols it could release have been released. In other words, current HNB appliances can end the heating process when the total heating time for the aerosol-generating product is reached by setting a fixed total heating time.

[0046] During the use of HNB appliances, different users have different suction frequencies when aspirating aerosols to generate products. That is, the total number of suctions (pouring) varies among different users in one heating process.

[0047] For example, let's take an example where an aerosol generator can be inhaled 14 times during the heating process, and user A matches this number of inhalations. Suppose user B can inhale 18 times (i.e., a higher inhalation frequency than user A), and the amount inhaled per inhalation is also greater than user A's. In this case, when user B uses the HNB device, the aerosol may be completely released while the HNB device continues to heat, leading to over-release of the aerosol generator. This can cause a burning sensation during inhalation, affecting the user experience. Conversely, if user C can inhale 10 times (a lower inhalation frequency than user A), the aerosol generator may not be completely released after the heating process ends, resulting in user C inhaling a smaller amount of aerosol, also affecting the user experience.

[0048] It is understandable that the detection of the number of suction ports used by users is closely related to the process of generating products from heated aerosols in HNB appliances and the user experience.

[0049] In related technologies, when performing suction testing on HNB (Heated Tobacco Unit) devices, one or more airflow sensors are typically used to detect the number of suction ports. However, when the accuracy of the airflow sensors is low or environmental changes occur (such as changes in humidity or temperature), measurement errors can easily arise, affecting the accuracy of the detection.

[0050] To address the aforementioned technical problems, this application provides an aerosol generating apparatus.

[0051] The application scenarios of the technical solution in this application will be introduced below. Please refer to [link / reference]. Figure 1 This application provides an aerosol generation system 1000, which includes an aerosol generation device 100 and an aerosol generation product 200. The aerosol generation device 100 includes a housing 10, a temperature detection element 20 and a controller 30. The housing 10 has an air passage 11, and the temperature detection element 20 is disposed in the air passage 11.

[0052] The temperature sensing element 20 can be a thermistor or the like.

[0053] The controller 30 can be a microcontroller unit (MCU) (a microcomputer chip that integrates multiple functions such as a central processing unit (CPU), memory, and input / output (I / O) interfaces), a digital signal processor (DSP) (a controller for digital signal processing), etc.

[0054] The air passage 11 can be used to guide external air into the aerosol generating device 100.

[0055] Optionally, the aerosol generating device 100 further includes a suction detection assembly, which includes a temperature detection element 20 and a first heating element 40. Before acquiring the detection signal collected by the temperature detection element 20, the controller 30 is also used to control the first heating element 40 to heat (preheat) the temperature detection element 20, thereby increasing the temperature difference between the cold air and the thermistor when suction occurs. That is, the cold air passing through the thermistor when suction occurs can cause a larger signal change in the thermistor, thereby further improving the accuracy of detection.

[0056] Optionally, the aerosol generating device 100 further includes a second heating element 41 and a receiving member 50, the receiving member 50 having a receiving cavity 51, and the second heating element 41 being used to heat the receiving cavity 51.

[0057] The second heating element 41 can be a resistance heating element, an electromagnetic heating element, an infrared heating element, a microwave heating element, a laser heating element, etc., and there are no restrictions on it.

[0058] The accommodating cavity 51 can be used to contain the aerosol generating product 200, and the second heating element 40 can heat the accommodating cavity 51 to bake the aerosol generating product 200 disposed in the accommodating cavity 51 so that the aerosol generating product 200 generates an aerosol that can be used by the user.

[0059] Optionally, the temperature sensing element 20 can be located in the airway 11 near the outlet of the airway 11.

[0060] Please see Figure 2 The aerosol generating device 100 may include a power supply module 101, a suction detection module 102, a heating control module 103, an interaction module 104, and a control module 105.

[0061] Optionally, the power supply module 101 can be used to supply power to the aerosol generating device 100, the control module 102 can be used to control each module, the heating control module 103 is used to control the second heating element 40 to heat the accommodating cavity 51 to bake the aerosol generating product 200 in the accommodating cavity 51; the interaction module 104 is used to realize the interaction between the user and the aerosol generating device 100 (for example, the user can open or close the aerosol generating device 100 by interacting with the interaction module 104); the suction detection module 102 is used to detect whether the user has suctioned, wherein the suction detection module 102 can also be used to control the first heating element 42 to preheat the temperature detection element 20.

[0062] Optionally, each module can be a functional control module or a hardware module. For example, control module 105 can be either a functional control module or a controller 30. For another example, please refer to... Figure 3 The user turns on the aerosol generating device 100 by interacting with the interaction module 104 (e.g., an interaction button). The control module 105 (e.g., a controller) responds to the interaction module 104 to make corresponding controls on the suction detection module 102 (e.g., a temperature detection element 20) and the heating control module 103 (e.g., a heating element). The power supply module 101 (e.g., a battery pack, not shown in the figure) can supply power to each module.

[0063] The suction detection method of the aerosol generating device 100 of this application will be described in detail below:

[0064] This application provides an aerosol generating apparatus 100. Please refer to [link to relevant documentation]. Figure 1 and Figure 4The aerosol generating device 100 includes a housing 10, a temperature sensing element 20, and a controller 30. The housing 10 has an air passage 11, the temperature sensing element 20 is disposed in the air passage 11, and the controller 30 can be used to implement a suction detection method, wherein the suction detection method includes:

[0065] Step 011: Acquire the detection signal collected by the temperature detection element 20;

[0066] Step 012: Based on the detection signal, perform suction detection to obtain suction detection results, including whether suction action has occurred.

[0067] The aerosol generating device 100 can be a device or equipment capable of processing (such as heating) the aerosol generating product 200 to obtain an aerosol generating matrix.

[0068] Among them, the aerosol generating product 200 includes a matrix material capable of generating aerosols, such as tobacco, plant extracts (such as mugwort), etc. When the matrix material of the aerosol generating product 200 is heated by a heat source or subjected to physical atomization, it can release the aerosol generating matrix for use by the user.

[0069] Optionally, the temperature sensing element 20 can be located at the air inlet of the air passage 11 (the part that communicates with the outside).

[0070] The temperature sensing element 20 can be a sensing device capable of acquiring temperature information; or it can be a sensing element capable of outputting a corresponding sensing signal in response to temperature changes.

[0071] The temperature sensing element 20 can be a thermistor. Taking a thermistor as an example, when the user is performing suction, external cold air can enter the aerosol generating device 100 through the air passage 11 (to ensure the internal pressure balance of the aerosol generating device 100, etc.). At this time, the cold air will flow through the thermistor, causing the resistance value of the thermistor to change (for example, when using a thermistor with a negative temperature coefficient, it will cause the resistance value of the thermistor to increase).

[0072] Optionally, the detection signal can be the resistance signal of a thermistor.

[0073] Since changes in the resistance of a thermistor can cause changes in the current and voltage values, the detection signal can be at least one of a voltage signal (voltage divider signal) or a current signal.

[0074] Optionally, the temperature sensing element 20 can also be a temperature sensor capable of acquiring temperature, and the detection information can be the temperature information acquired by the temperature sensor.

[0075] For ease of description, this application will use the example of a temperature sensing element 20 including a thermistor and a detection signal including a voltage divider signal from the thermistor.

[0076] Please see Figure 5 Optionally, the aspiration detection method also includes:

[0077] Step 013: Based on the suction test results, count the number of suctions.

[0078] Specifically, the aerosol generating device 100 includes a housing 10, a temperature sensing element 20, and a controller 30. An air passage 11 is provided inside the housing 10, through which external air can enter the aerosol generating device 100. The air passage 11 can communicate with the outside to keep the internal pressure of the aerosol generating device 100 balanced. The temperature sensing element 20 is provided in the air passage 11 and can monitor the temperature change of the air passage 11 and obtain a corresponding detection signal based on the temperature of the air passage 11. Since the temperature change in the airway 11 is usually caused by cold air entering the aerosol generating device 100 when the user draws air, the controller 30 can obtain the detection signal collected by the temperature detection element 20 and determine the drawing detection result, i.e., whether a drawing action has occurred, by analyzing the detection signal (e.g., based on the fluctuation of multiple detection signals over time; or, based on the comparison between the change threshold of the detection signal and a preset threshold, etc.). Finally, it can also perform subsequent processing based on the drawing detection result. For example, if it is determined that a drawing action has occurred, the number of drawing actions can be recorded to count the number of drawing actions that occur when the user uses the aerosol generating device 100.

[0079] Thus, the aerosol generating device 100 includes a housing 10, a temperature sensing element 20, and a controller 30. The housing 10 has an air passage 11, which ensures that the internal pressure of the aerosol generating device 100 remains balanced. The temperature sensing element 20 is placed in the air passage 11 to monitor temperature changes. By acquiring the detection signal collected by the temperature sensing element 20, a suction detection is performed based on the detection signal to obtain the suction detection result, which includes whether a suction action has occurred. Since the temperature change in the air passage 11 is usually caused by cold air entering the aerosol generating device 100 when the user suctions, suction detection based on the detection signal collected by the temperature sensing element 20 in the air passage 11 has high accuracy and can avoid false judgments. Only the temperature sensing element 20 needs to be installed, resulting in low cost. The suction detection result can be obtained by analyzing the detection signal collected by the temperature sensing element 20, resulting in a simple hardware structure and low assembly difficulty. In addition, the temperature sensing element 20 does not affect the cleanliness of the air passage 11, avoids the accumulation of e-liquid, and has good corrosion resistance.

[0080] Please see Figure 6In some implementations, step 012: based on the detection signal, performing suction detection to obtain suction detection results includes:

[0081] Step 0121: Based on the collected multiple consecutive detection signals, determine the changing trend of the detection signals;

[0082] Step 0122: Based on the changing trend, perform suction detection to obtain the suction detection results.

[0083] The trend of change can include the changing direction of multiple detection signals continuously collected within a preset time period.

[0084] Specifically, based on the changing trends of multiple consecutive detection signals along the time sequence, it is determined whether the aerosol generating device 100 has undergone suction. For example, if the changing trends of multiple detection signals match a preset trend (such as a change from large to small), it can be determined that a suction action has occurred.

[0085] Please see Figure 7 Optionally, step 0121: Based on the collected multiple consecutive detection signals, determine the changing trend of the detection signals, including:

[0086] Step 01211: Differentiate the collected multiple consecutive detection signals to obtain the rate of change of the detection signals at each time step;

[0087] Step 01212: Determine the trend of change based on the rate of change at each time point.

[0088] Optionally, please refer to Figure 8 The aspiration detection method also includes:

[0089] Step 014: Filter out the rates of change with negative values ​​at each time point.

[0090] Taking the temperature sensing element 20, which includes a thermistor, as an example, during suction, the resistance value of the thermistor typically increases continuously. When calculating the rate of change for multiple consecutive detection signals from the thermistor, the rate of change is usually positive. Conversely, as suction begins and ends, the resistance value of the thermistor typically begins to gradually decrease, and the rate of change is usually negative. In other words, a single suction cycle is often accompanied by an increase and a decrease in the rate of change. When judging suction detection based on the rate of change at various times, more attention can be paid to increases or rises in the rate of change (positive rates of change). This is achieved by filtering out negative rates of change at each time point, thus avoiding potential interference from negative rates of change and saving computational resources during calculation and detection.

[0091] Specifically, by differentiating multiple consecutive detection signals, the rate of change of the detection signal at each moment is obtained. Based on the rate of change at each moment, the trend of change is determined. For example, if the rate of change is positive at any moment, the detection signal (such as the voltage divider signal value of the thermistor) at that moment can be considered to be increasing, and the trend of change is an increasing trend. If the rate of change is negative at any moment, the detection signal (such as the voltage divider signal value of the thermistor) at that moment can be considered to be decreasing, and the trend of change is a decreasing trend. If the rate of change is close to zero at any moment, the trend of change of the detection signal (such as the voltage divider signal value of the thermistor) at that moment can be considered to be in a stable state. Then, based on the trend of change of each detection signal, a suction detection judgment is performed. For example, if the trend of change matches the preset trend, it can be considered that a suction has occurred, that is, the suction result is determined to be suction.

[0092] Please see Figure 9 Optionally, step 01212: Based on the rate of change at each time point, determine the trend of change, including:

[0093] Step 01213: If the rate of change or the integral value of the rate of change within a preset time period is greater than the preset rate of change, the trend of change is determined to be the preset trend.

[0094] The preset trends include decreasing or increasing.

[0095] Specifically, when the aerosol generating device 100 is started and no suction occurs, the detection signal of the thermistor can be collected, and the collected detection signal can be used as the original sample value. Then, based on the comparison and analysis between the signal change value of the thermistor collected when suction occurs and the original sample value, the preset change rate can be determined.

[0096] Specifically, when suction occurs, the resistance value of the thermistor usually continues to increase. When the rate of change is greater than the preset rate of change (which can be 0), the detection signal increases, which can be considered as the cold air causing a change in the resistance value of the thermistor. Therefore, the trend of change is increasing. When the detected rate of change is less than the preset rate of change (which can be 0), since the detection signal decreases, it usually means that suction has ended, that is, when the cold air no longer enters the airway 11. At this time, the resistance value of the thermistor tends to stabilize. Therefore, the trend of change is decreasing.

[0097] For example, please see Figure 10 , Figure 10An example is provided illustrating the change in the rate of change during a single aspiration. When the rate of change is greater than a preset rate of change (assumed to be 0), specifically within the time interval from the 108th to the 111th second, the rate of change includes an increasing trend from the 108th to the 109th second and a decreasing trend from the 109th to the 111th second. Therefore, when the rate of change is greater than the preset rate of change, the trend can be determined to be the preset trend (increasing or decreasing). For another example, please refer to... Figure 11 , Figure 11 An example is a diagram showing the rate of change after calculating the absolute value of the rate of change during a single suction. If the rate of change is greater than the preset rate of change, the trend of change can be determined to be the preset trend (increasing or decreasing).

[0098] By calculating the integral value of the rate of change over a preset time period, the instantaneous rate of change of the detection signal at a certain moment is converted into the total change of the detection signal over the preset time period, so as to determine the specific change of the detection signal. This allows for a more intuitive determination of whether the detection signal has changed in amplitude, thereby improving the accuracy of the suction detection judgment.

[0099] For example, if the integral value of the rate of change within a preset time period is greater than a preset rate of change (assuming it's 5 or -5), that is, within the time interval from the 108th second to the 111th second, the integral value is greater than the preset rate of change. This can be attributed to the entry of cold air during suction, causing a cumulative change in the thermistor's detection signal during that time period, which is greater than the preset rate of change (5). In this case, the trend might be increasing (at the start of suction). However, at the end of suction, the amplitude of the detection signal will still change. If the collected detection signal shows a cumulative change less than the preset rate of change (-5), then when the integral value of the rate of change within a preset time period is greater than the preset rate of change, the trend is determined to be the preset trend (increasing or decreasing).

[0100] Please see Figure 12 In some implementations, step 0121: determining the changing trend of the detection signals based on a series of consecutively acquired detection signals, includes:

[0101] Step 01214: Take the derivative of the collected multiple consecutive detection signals to obtain the rate of change of the detection signals at each time step;

[0102] Step 01215: Differentiate the multiple consecutive rates of change again to obtain the trend value;

[0103] Step 01216: Determine the trend based on the trend value.

[0104] Specifically, by differentiating the acquired multiple consecutive detection signals, the rate of change of the detection signals at each moment (the instantaneous rate of change of each detection signal) can be obtained. For example, please refer to [link to relevant documentation]. Figure 13 and Figure 14 , Figure 13 This diagram illustrates the rate of change of the detection signal at various time points, obtained by differentiating multiple collected detection signals during multiple suction cycles. Figure 14 This diagram illustrates the rate of change of the detection signals at various times during multiple suction cycles. After differentiating and calculating the absolute values ​​of the collected detection signals, the diagram shows the rate of change of the detection signals at each time point. Then, the rate of change is differentiated again for multiple consecutive cycles to amplify the changes in the detection signals, thereby obtaining the trend value. The calculation of the trend value can further improve the accuracy of detection. Finally, the trend is determined based on the trend value.

[0105] Please see Figure 15 Optionally, step 01216: Based on the trend value, determine the trend of change, including:

[0106] Step 01217: If the trend value or the integral value of the trend value within a preset time period is greater than the preset trend value, the changing trend is determined to be the preset trend.

[0107] Specifically, if the trend value is greater than the preset trend value, the detection signal collected at this time can be considered as the signal collected after the cold air passes through the temperature detection element 20 during the suction process (from the start of suction to the complete end of suction). At this time, the trend can be determined as the preset trend. If the integral value of the trend value within the preset time period is greater than the preset trend value, the cumulative change of the detection signal within the preset time period can be considered as representing the occurrence of one suction, that is, the trend can be determined as the preset trend.

[0108] Please see Figure 16 Optionally, the aspiration detection method also includes:

[0109] Step 015: If the changing trend matches the preset trend, confirm that suction has been performed.

[0110] For example, taking an increasing preset trend as an example, if the changing trend matches (is the same as) the preset trend, it is determined that suction has been performed.

[0111] Specifically, please refer to Figure 17 and Figure 18 , Figure 17 and Figure 18 An illustrative diagram is shown, illustrating how, during the suction process, suction is determined by comparing the trend of the rate of change with a preset trend. When the trend of change matches the preset trend, it can be considered that one suction has occurred, and the number of suctions can be recorded.

[0112] Please see Figure 19 Optionally, the aerosol generating device 100 further includes a second heating element 41 and a receiving member 50. The receiving member 50 has a receiving cavity 51. The second heating element 41 is used to heat the receiving cavity 51. The temperature detection element 20 is disposed in the air passage 11 near the second heating element 41. The suction detection method further includes:

[0113] Step 016: During the preheating stage, control the second heating element 41 to preheat;

[0114] During the preheating phase, the controller 30 does not perform suction detection.

[0115] Specifically, after the aerosol generating device 100 is started, the second heating element 41 is preheated by controlling it so that the temperature of the accommodating cavity 51 is higher than the ambient temperature. Preheating can reduce the impact of sudden high temperature on the heating element, avoid damage to the second heating element 41 due to sudden high temperature, and thus extend the service life of the second heating element 41. In order to avoid misjudgment of the number of suctions, the controller 30 does not perform suction detection during the preheating stage.

[0116] Please see Figure 20 To facilitate better implementation of the aerosol generating apparatus according to the embodiments of this application, this application also provides a suction detection device 300. The suction detection device 300 is used in the aerosol generating apparatus, which includes a housing, a temperature sensing element, and a controller. The housing has an air passage, and the temperature sensing element is disposed in the air passage. The suction detection device 300 includes an acquisition module 301 and a detection module 302. The acquisition module 301 is used to acquire the detection signal collected by the temperature sensing element; the detection module 302 is used to perform suction detection based on the detection signal to obtain a suction detection result, which includes whether a suction action has occurred.

[0117] In some implementations, the detection module 302 is further configured to determine the changing trend of the detection signal based on a series of consecutive detection signals collected; and to perform suction detection based on the changing trend to obtain the suction detection result.

[0118] In some implementations, the detection module 302 is further used to differentiate the acquired multiple consecutive detection signals to obtain the rate of change of the detection signals at each time; and to determine the trend of change based on the rate of change at each time.

[0119] In some implementations, the detection module 302 is further configured to determine the change trend as a preset trend when the rate of change or the integral value of the rate of change within a preset time period is greater than a preset rate of change.

[0120] In some embodiments, the suction detection device 300 further includes a filter module 303, which is used to filter out negative rates of change at each time point.

[0121] In some implementations, the detection module 302 is further used to differentiate the acquired multiple consecutive detection signals to obtain the rate of change of the detection signals at each time; differentiate the multiple consecutive rates of change again to obtain a trend value; and determine the trend of change based on the trend value.

[0122] In some implementations, the detection module 302 is further configured to determine the changing trend as a preset trend when the trend value or the integral value of the trend value within a preset time period is greater than the preset trend value.

[0123] In some embodiments, the suction detection device 300 further includes a determination module 304, which determines that suction has been performed if the trend of change matches a preset trend.

[0124] The apparatus has been described above from the perspective of functional modules in conjunction with the accompanying drawings. These functional modules can be implemented in hardware, in software instructions, or in a combination of hardware and software modules. Specifically, the steps of the method implementation in this application can be completed by the integrated logic circuits in the processor's hardware and / or by software instructions. The steps of the method disclosed in this application can be directly manifested as being executed by a hardware encoding processor, or by a combination of hardware and software modules in the encoding processor. Optionally, the software module can be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps in the above method implementation.

[0125] Please see Figure 21 This application also provides a computer-readable storage medium 500 storing a computer program 510. When the computer program 510 is executed by the processor 520, it implements the steps of the insertion detection method of any of the above embodiments. For the sake of brevity, these steps will not be repeated here.

[0126] In the description of this specification, the references to terms such as "some embodiments," "in one example," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0127] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this application pertain.

[0128] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An aerosol generating device, characterized in that, The aerosol generating device includes a housing, a temperature sensing element, and a controller. The housing has an air passage, the temperature sensing element is disposed in the air passage, and the controller is used for: Acquire the detection signal collected by the temperature detection element; Based on the detection signal, aspiration detection is performed to obtain aspiration detection result, which includes whether aspiration action has occurred.

2. The aerosol generating apparatus according to claim 1, characterized in that, The step of performing aspiration detection based on the detection signal to obtain aspiration detection results includes: Based on the collected multiple consecutive detection signals, the changing trend of the detection signals is determined; Based on the aforementioned trend, aspiration detection is performed to obtain the aspiration detection results.

3. The aerosol generating apparatus according to claim 2, characterized in that, Determining the changing trend of the detection signals based on a series of acquired detection signals includes: Differentiate the collected multiple consecutive detection signals to obtain the rate of change of the detection signals at each time step; The trend of change is determined based on the rate of change at each time point.

4. The aerosol generating apparatus according to claim 3, characterized in that, Determining the trend of change based on the rate of change includes: If the rate of change or the integral value of the rate of change over a preset time period is greater than a preset rate of change, the trend of change is determined to be a preset trend.

5. The aerosol generating apparatus according to claim 3, characterized in that, The controller is also configured to filter out negative values ​​of the rate of change at each of the time points.

6. The aerosol generating apparatus according to claim 2, characterized in that, Determining the changing trend of the detection signals based on a series of acquired detection signals includes: Differentiate the collected multiple consecutive detection signals to obtain the rate of change of the detection signals at each time step; Differentiate the rate of change for each consecutive number of such rates of change to obtain the trend value; The trend is determined based on the trend value.

7. The aerosol generating apparatus according to claim 6, characterized in that, Determining the trend based on the trend value includes: If the trend value or the integral value of the trend value within a preset time period is greater than the preset trend value, the trend is determined to be the preset trend.

8. The aerosol generating apparatus according to any one of claims 2-7, characterized in that, The controller is also used for: If the changing trend matches a preset trend, it is determined that suction has been performed.

9. The aerosol generating apparatus according to claim 1, characterized in that, The aerosol generating device further includes a suction detection component, which includes the temperature detection element and a first heating element. Before acquiring the detection signal collected by the temperature detection element, the controller is also used to control the first heating element to heat the temperature detection element.

10. The aerosol generating apparatus according to claim 1, characterized in that, The aerosol generating device further includes a second heating element and a accommodating member. The accommodating member has an accommodating cavity, and the second heating element is used to heat the accommodating cavity.

11. The aerosol generating apparatus according to claim 10, characterized in that, The temperature detection element is located in the air passage near the second heating element. The controller is also used to control the second heating element to preheat during the preheating stage. During the preheating stage, the controller does not perform the suction detection.

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