Heating control method and device for heating non-combustion appliance, controller and appliance

Abstract

The invention relates to the technical field of heating control of heat-not-burn appliances, and provides a heating control method and device of a heat-not-burn appliance, a controller and the heat-not-burn appliance. The method comprises the following steps: after the heat-not-burn appliance is started to heat, detecting an actual temperature rise parameter of a heating body of the heat-not-burn appliance in a preset time period; according to the actual temperature rise parameter, determining whether the heat-not-burn appliance is inserted into an aerosol generating substrate or not; if the heat-not-burn appliance is not inserted into the aerosol-generating substrate, heating of the heat-not-burn appliance is turned off. By adopting the method, heating can be automatically stopped when the appliance is mistakenly started, so that power consumption is reduced, and potential safety hazards are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of heating control of heat-without-combustion appliances, and in particular to a heating control method, device, controller and heat-without-combustion appliance. Background Art

[0002] When the heat-not-burn device starts heating, the heating element can be used to heat and bake the aerosol-generating matrix for the user to inhale. However, in some scenarios, there is a problem of mis-starting the device. For example, when the device is not inserted with the aerosol-generating matrix, an external force may accidentally touch the start button of the device, which will cause the device to burn empty, which not only consumes electricity but also poses a safety hazard. Summary of the invention

[0003] In view of this, the embodiments of the present application provide a heating control method, device, controller and heating non-combustion appliance, which can automatically shut down the heating when the appliance is mistakenly started, thereby reducing power consumption and reducing safety hazards.

[0004] A first aspect of an embodiment of the present application provides a heating control method for a heating-not-burning appliance, comprising:

[0005] When the heating-without-combustion device starts heating, detecting the actual temperature rise parameters of the heating element of the heating-without-combustion device within a preset time period;

[0006] Determine whether the heat-not-burn device is inserted into the aerosol-generating substrate based on the actual temperature rise parameters;

[0007] If the heat-not-burn appliance is not inserted with an aerosol generating substrate, heating of the heat-not-burn appliance is turned off.

[0008] In the technical solution of the embodiment of the present application, after the heating non-combustion appliance starts heating, the actual temperature rise parameters of the heating element within a preset time period are detected; since the temperature rise parameters of the heating element under the condition of inserting an aerosol generating substrate are significantly different from those under the condition of not inserting an aerosol generating substrate, for example, the temperature rise rate of the heating element under the condition of inserting an aerosol generating substrate is significantly lower than the temperature rise rate under the condition of not inserting an aerosol generating substrate, it is possible to identify whether the appliance is currently inserted with an aerosol generating substrate based on the current actual temperature rise parameters of the appliance; if it is determined that the appliance is not inserted with an aerosol generating substrate, it indicates that the appliance is currently started by mistake, and at this time, the heating of the appliance is turned off, thereby reducing power consumption and reducing safety hazards.

[0009] In one implementation of the embodiment of the present application, determining whether the heat-not-burn device is inserted into the aerosol generating substrate according to the actual temperature increase parameter includes:

[0010] Obtaining pre-stored reference temperature rise parameters; wherein the reference temperature rise parameters include temperature rise parameters of the heating element within a preset time period under the condition that the heat-without-combustion device is in a specified power state and an aerosol generating substrate is inserted, and / or temperature rise parameters of the heating element within a preset time period under the condition that the heat-without-combustion device is in a specified power state and no aerosol generating substrate is inserted;

[0011] Based on the comparison results between the actual temperature rise parameters and the reference temperature rise parameters, it is determined whether the heating without burning device is inserted into the aerosol generating substrate.

[0012] In one implementation of the embodiment of the present application, the actual temperature rise parameter includes an actual temperature rise rate of the heating element within a preset time period; the reference temperature rise parameter includes a first temperature rise rate of the heating element within a preset time period under the condition that the heating without burning appliance is in a maximum power state and an aerosol generating substrate is inserted; determining whether the heating without burning appliance is inserted with the aerosol generating substrate according to a comparison result of the actual temperature rise parameter and the reference temperature rise parameter includes:

[0013] If the actual temperature rise rate is greater than the first temperature rise rate, it is determined that the heat-not-burn appliance is not inserted into the aerosol-generating substrate.

[0014] In an implementation of the embodiment of the present application, the actual temperature rise parameter also includes the actual total energy generated by the heating element within a preset time period; the reference temperature rise parameter also includes the first total energy generated by the heating element within a preset time period under the condition that the heating without burning appliance is in the highest power state and the aerosol generating substrate is inserted, and includes the second total energy generated by the heating element within the preset time period under the condition that the heating without burning appliance is in the lowest power state that can be started and the aerosol generating substrate is inserted; according to the comparison result of the actual temperature rise parameter and the reference temperature rise parameter, determining whether the heating without burning appliance is inserted with the aerosol generating substrate also includes:

[0015] If the actual temperature rise rate is less than or equal to the first temperature rise rate, and the actual total energy is not between the first total energy and the second total energy, it is determined that the heat-not-burn appliance is not inserted into the aerosol-generating substrate.

[0016] In one implementation of the embodiment of the present application, the actual temperature rise parameter includes an actual temperature rise rate of the heating element within a preset time period; the reference temperature rise parameter includes a second temperature rise rate of the heating element within a preset time period under the condition that the heating without burning appliance is in a startable minimum power state and the aerosol generating substrate is not inserted; according to the comparison result of the actual temperature rise parameter and the reference temperature rise parameter, determining whether the heating without burning appliance is inserted with the aerosol generating substrate includes:

[0017] If the actual temperature rise rate is less than the second temperature rise rate, it is determined that the heat without burning appliance is inserted into the aerosol generating substrate.

[0018] In an implementation of the embodiment of the present application, the reference temperature rise parameter includes a first temperature rise parameter of the heating element within a preset time period under the condition that the heating without burning appliance is in a current power state and an aerosol generating substrate is inserted, and includes a second temperature rise parameter of the heating element within a preset time period under the condition that the heating without burning appliance is in a current power state and an aerosol generating substrate is not inserted; according to the comparison result of the actual temperature rise parameter and the reference temperature rise parameter, determining whether the heating without burning appliance is inserted with the aerosol generating substrate includes:

[0019] Calculating a first difference between an actual heating parameter and a first heating parameter, and calculating a second difference between the actual heating parameter and a second heating parameter;

[0020] If the first difference is greater than the second difference, it is determined that the heat-not-burn appliance is not inserted with an aerosol-generating substrate.

[0021] In one implementation of the embodiment of the present application, the preset time period is within the preheating stage of the heating element.

[0022] A second aspect of an embodiment of the present application provides a heating control device for a heating-not-burning appliance, comprising:

[0023] A temperature rise parameter detection module, used to detect actual temperature rise parameters of the heating element of the heat-not-burning device within a preset time period after the heat-not-burning device starts heating;

[0024] An insertion identification module is used to determine whether the heat-not-burn device is inserted into the aerosol generating substrate based on actual temperature rise parameters;

[0025] A heating control module is used to turn off the heating of the heat-not-burn appliance if the heat-not-burn appliance is not inserted with an aerosol-generating substrate.

[0026] A third aspect of an embodiment of the present application provides a controller, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the heating control method for a heating non-combustion appliance provided in the first aspect of an embodiment of the present application is implemented.

[0027] A fourth aspect of the embodiments of the present application provides a heating without burning appliance, which includes a controller provided in the third aspect of the embodiments of the present application.

[0028] A fifth aspect of an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the heating control method for a heating non-combustion appliance provided in the first aspect of the embodiment of the present application.

[0029] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of a heating without burning device provided in an embodiment of the present application;

[0031] Figure 2 It is a flow chart of a heating control method of a heat-not-burn appliance provided in an embodiment of the present application;

[0032] Figure 3 This is a schematic diagram of the principle of identifying whether a device is inserted into an aerosol generating substrate according to the heating rate and total energy generated by a heating element provided in an embodiment of the present application;

[0033] Figure 4 It is a schematic diagram of the operation flow of a heating control method for a heating-without-combustion appliance provided in an embodiment of the present application in an actual application scenario;

[0034] Figure 5 It is a structural framework diagram of a heating control device for a heating-without-combustion appliance provided in an embodiment of the present application;

[0035] Figure 6 It is a schematic diagram of a controller provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures, technologies, etc. are proposed, so as to thoroughly understand the embodiments of the present application. However, it should be clear to those skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, the detailed description of well-known systems, devices, circuits and methods is omitted to prevent unnecessary details from hindering the description of the present application. In addition, in the description of the present application specification and the attached claims, the terms "first", "second", "third" etc. are only used to distinguish the description, and cannot be interpreted as indicating or suggesting relative importance.

[0037] In the use scenario of heat-not-burn appliances, the problem of accidentally starting the appliance sometimes occurs. For example, if the user puts the appliance in a backpack, he may accidentally touch the start button of the appliance through the backpack. At this time, the appliance has not yet been inserted into the aerosol generating matrix, so there will be a dry burn phenomenon, which not only consumes electricity but also poses a safety hazard.

[0038] To address this problem, the embodiments of the present application provide a heating control method, device, controller, and heating non-combustion appliance for a heating non-combustion appliance, which can determine whether the appliance is currently inserted into an aerosol generating matrix based on the temperature rise parameters of the heating element, identify whether it is currently a false start, and shut down the heating of the appliance in the case of a false start, thereby reducing power consumption and reducing safety hazards. For more specific technical implementation details of the embodiments of the present application, please refer to the various embodiments described below.

[0039] like Figure 1 , which is a schematic diagram of a heating without burning appliance provided in an embodiment of the present application. Figure 1 The heating-not-burning device shown includes a controller, a heating element, and a battery module, wherein the controller is electrically connected to the heating element and the battery module, respectively. The controller can be used to control the temperature of the heating element, and the heating element can be heated up under the control of the controller to bake the aerosol-generating matrix, and the battery module is used to provide electrical energy to the controller and the heating element.

[0040] It should be understood that the executor of each method embodiment of the present application is a controller provided in the heating without burning appliance, for example, it can be a device such as the main control chip of the heating without burning appliance, and the embodiments of the present application do not impose any restrictions on the specific type of the controller.

[0041] See also Figure 2 , shows a heating control method for a heating-not-burning appliance provided in an embodiment of the present application, comprising:

[0042] 201. After the heating-without-combustion device starts heating, detecting actual temperature rise parameters of the heating element of the heating-without-combustion device within a preset time period;

[0043] When the start button of the heating-without-burning appliance is pressed or touched by mistake by the user, the heating-without-burning appliance will start heating and control the heating element according to the stored standard temperature curve. After starting, the appliance first enters the preheating stage, and controls the heating element to rise from the ambient temperature to the set target temperature by full power output. When the difference between the actual temperature of the heating element and the target temperature does not exceed a certain threshold (for example, 30°C), the PID module can be called to perform PID control on the temperature of the heating element, and the output power of the appliance is adjusted by outputting signals with different PWM duty cycles, so that the actual temperature of the heating element gradually stabilizes at the target temperature.

[0044] After the appliance starts heating for a period of time, the actual temperature rise parameters of the heating element within a preset time period can be detected. Among them, the preset time period can be in any temperature rise time period included in the entire heating process of the heating element, and its specific time length is not limited, for example, it can be 2 seconds or 3 seconds. As an example, the preset time period can be in the preheating stage of the heating element. Considering that the heating trend of the heating element is relatively stable during the preheating stage, the preset time period is selected from the preheating stage, which can improve the accuracy of the actual temperature rise parameters obtained by the detection. For example, the heating element enters the preheating stage after the heating is started, and the 0-3 seconds of heating can be selected as the preset time period, that is, the actual temperature rise parameters of the heating element in the 0-3 seconds of heating are detected.

[0045] The actual heating parameters of the heating element within the preset time period may include the actual heating rate, the actual heating temperature, the actual total energy generated, etc. These heating parameters can be calculated based on the actual temperature of the heating element at each time point within the preset time period, and the actual temperature of the heating element at each time point can be calculated by the resistance value of the heating element. Specifically, after the device starts heating, it will call the heating element resistance calculation function at a certain frequency (for example, 10 times / second) to calculate the actual resistance value R2 of the current heating element, and then obtain the initial resistance value R1 and resistance temperature coefficient TCR of the heating element stored in the device, as well as the current ambient temperature T 室温 Parameters such as T can be used 当前 =((R2-R1) / (R1*TCR))+T 室温 Calculate the actual temperature T of the heating element at the current time point 当前 .

[0046] Assuming that the preset time period is the 0-3 seconds of heating, the actual temperature of the heating element at the 0th second is T0, and the actual temperature at the 3rd second is T3, then the actual heating rate can be obtained by calculating the heating slope. For example, (T3-T0) / 3 can be calculated as the actual heating rate K. In addition, considering that the heating trend of the heating element is not linear, that is, the heating slope at each time point will change, the preset time period can be divided into multiple fine time periods, and the corresponding heating slope is calculated for each fine time period. Finally, the average of the heating slopes of all fine time periods is calculated as the actual heating rate. This can improve the accuracy of the actual heating rate to a certain extent. The actual heating temperature can be calculated based on the actual temperature of the heating element corresponding to the two ends of the preset time period. For example, the actual heating temperature T 升温 =T3-T0. The actual total energy generated by the heating element during the preset time period can be calculated according to the energy calculation empirical formula P=(T2-T1) 2×Δt, where T2 represents the actual temperature of the heating element at the current time point, T1 represents the actual temperature of the heating element at the previous time point, and Δt represents the time difference between the current time point and the previous time point. There will be multiple Δt intervals within the preset time period, and the corresponding energy value is calculated for each Δt interval according to the energy calculation empirical formula. Finally, the energy values ​​corresponding to all intervals are accumulated to obtain the actual total energy generated by the heating element within the preset time period.

[0047] 202. Determine whether the heat-not-burn device is inserted into the aerosol-generating substrate based on the actual temperature-raising parameters;

[0048] After obtaining the actual temperature rise parameters of the heating element within the preset time period, it is possible to determine whether the heating non-combustion device is inserted into the aerosol generating substrate based on the actual temperature rise parameters. The principle of this operation is that the temperature rise parameters of the heating element under the condition of inserting the aerosol generating substrate are significantly different from the temperature rise parameters under the condition of not inserting the aerosol generating substrate. By comparing the actual temperature rise parameters with the temperature rise parameters of the heating element under different known conditions, it is possible to determine whether the device is currently inserted into the aerosol generating substrate. The following specifically describes various implementation methods for identifying whether the device is inserted into the aerosol generating substrate based on the actual temperature rise parameters.

[0049] In one implementation of the embodiment of the present application, determining whether the heat-not-burn device is inserted into the aerosol generating substrate according to the actual temperature increase parameter includes:

[0050] (1) obtaining a pre-stored reference temperature rise parameter; wherein the reference temperature rise parameter includes a temperature rise parameter of the heating element within a preset time period under the condition that the heat-without-combustion device is in a specified power state and an aerosol generating substrate is inserted, and / or a temperature rise parameter of the heating element within a preset time period under the condition that the heat-without-combustion device is in a specified power state and no aerosol generating substrate is inserted;

[0051] (2) Determine whether the heat-not-burn device is inserted into the aerosol generating substrate based on the comparison result of the actual temperature rise parameter with the reference temperature rise parameter.

[0052] Under normal circumstances, the heating parameters of the heating element are related to factors such as the battery power of the device and whether the device is inserted into an aerosol generating matrix. Specifically, the heating parameters of the heating element are positively correlated with the battery power, that is, if the battery power is higher, the heating parameters such as the heating rate of the heating element will also be greater, and if the battery power is lower, the heating parameters such as the heating rate of the heating element will also be smaller. If the device is inserted into an aerosol generating matrix, part of the heat of the heating element will be absorbed by the outer wall of the device and the aerosol generating matrix during heating operation, and if the device is not inserted into an aerosol generating matrix, the heating element will only be absorbed by part of the heat of the outer wall of the device during heating operation. Therefore, under the same battery power, the heating parameters of the heating element of the device without an aerosol generating matrix are greater than the heating parameters of the heating element of the device with an aerosol generating matrix inserted. In actual operation, the device can pre-calculate various power states (such as the highest power state, the lowest power state that can start the device, 70% power state, 50% power state, 30% power state, etc.), the heating rate, heating temperature or total energy generated by the heating element within the preset time period under different conditions such as insertion of the aerosol generating matrix and no insertion of the aerosol generating matrix through experimental testing, and these reference temperature rise parameters can be stored in a storage device such as the register Flash of the device.

[0053] After obtaining the above-mentioned reference heating parameters, the controller of the device compares the current actual heating parameters with the above-mentioned heating parameters, and can know whether the characteristics of the actual heating parameters are closer to the heating parameters under the condition of inserting the aerosol generating substrate or the heating parameters under the condition of not inserting the aerosol generating substrate, thereby determining whether the device is currently inserted with the aerosol generating substrate. The reference heating parameters obtained for comparison may only include the corresponding heating parameters under the condition of the device being in a certain specified power state (such as the highest power state or the lowest power state) and inserted with the aerosol generating substrate, may only include the corresponding heating parameters under the condition of the device being in a certain specified power state and not inserted with the aerosol generating substrate, may include the corresponding heating parameters under the condition of the device being in a certain specified power state and inserted with the aerosol generating substrate and the corresponding heating parameters under the condition of the device being in a certain specified power state and not inserted with the aerosol generating substrate, and may also include the corresponding heating parameters of the device under the conditions of multiple different power states at the same time, and the embodiments of the present application do not impose any restrictions on this. Generally speaking, if more reference heating parameters are obtained for comparison, the accuracy of identifying whether the device is inserted into the aerosol generating substrate will be higher. The following describes several specific implementation methods for determining whether the device is inserted into the aerosol generating substrate based on the comparison results of the heating parameters.

[0054] In one implementation of the embodiment of the present application, the actual temperature rise parameter includes an actual temperature rise rate of the heating element within a preset time period; the reference temperature rise parameter includes a first temperature rise rate of the heating element within a preset time period under the condition that the heating without burning appliance is in a maximum power state and an aerosol generating substrate is inserted; determining whether the heating without burning appliance is inserted with the aerosol generating substrate according to a comparison result of the actual temperature rise parameter and the reference temperature rise parameter includes:

[0055] If the actual temperature rise rate is greater than the first temperature rise rate, it is determined that the heat-not-burn appliance is not inserted into the aerosol-generating substrate.

[0056] Assuming that the actual temperature rise parameter obtained includes the actual temperature rise rate K of the heating element within the preset time period, and the reference temperature rise parameter obtained includes the first temperature rise rate K1 of the heating element within the preset time period under the condition that the device is in the highest power state and the aerosol generating matrix is ​​inserted, then the actual temperature rise rate K is compared with the first temperature rise rate K1. Referring to the analysis in the previous article, if the battery power is higher, the temperature rise rate of the heating element is also greater, and the first temperature rise rate K1 corresponds to the highest power state, so the first temperature rise rate K1 represents the highest temperature rise rate of the heating element within the preset time period when the aerosol generating matrix is ​​inserted. Specifically, if the current battery power of the device is in the highest power state and the device has been inserted into the aerosol generating matrix, the actual temperature rise rate K detected is approximately equal to the first temperature rise rate K1. If the current battery power of the device is not in the highest power state and the device has been inserted into the aerosol generating matrix, the actual temperature rise rate K detected will be less than the first temperature rise rate K1. Therefore, if the actual temperature rise rate K detected is greater than the first temperature rise rate K1, it means that the actual temperature rise rate K has exceeded the maximum temperature rise rate of the heating element within the preset time period when the aerosol generating matrix is ​​inserted. Therefore, it can be determined that the aerosol generating matrix is ​​definitely not inserted into the device at present. The temperature rise rate of the heating element will be higher when the aerosol generating matrix is ​​not inserted.

[0057] On the contrary, if the actual temperature rise rate K detected is less than or equal to the first temperature rise rate K1, it means that the device may currently be inserted into the aerosol generating matrix. At this time, one way to deal with it is to directly determine that the device is currently inserted into the aerosol generating matrix. However, considering that when the device is inserted with debris (such as a metal rod or a ceramic rod, etc.), or the device is in a low-power state and the aerosol generating matrix is ​​not inserted, the actual temperature rise rate K detected may also be less than or equal to the first temperature rise rate K1. If it is immediately determined that the device is currently inserted into the aerosol generating matrix when K≤K1 is detected, there is a high possibility of misjudgment. In response to this problem, after detecting that K≤K1, further judgment can be performed in combination with the actual total energy generated by the heating element within a preset time period, thereby reducing misjudgments and improving the accuracy of identifying whether the device is inserted into the aerosol generating matrix. See below for details.

[0058] In an implementation of the embodiment of the present application, the actual temperature rise parameter also includes the actual total energy generated by the heating element within a preset time period; the reference temperature rise parameter also includes the first total energy generated by the heating element within a preset time period under the condition that the heating without burning appliance is in the highest power state and the aerosol generating substrate is inserted, and includes the second total energy generated by the heating element within the preset time period under the condition that the heating without burning appliance is in the lowest power state that can be started and the aerosol generating substrate is inserted; according to the comparison result of the actual temperature rise parameter and the reference temperature rise parameter, determining whether the heating without burning appliance is inserted with the aerosol generating substrate also includes:

[0059] If the actual temperature rise rate is less than or equal to the first temperature rise rate, and the actual total energy is not between the first total energy and the second total energy, it is determined that the heat-not-burn appliance is not inserted into the aerosol-generating substrate.

[0060] When the actual temperature rise rate K detected is less than or equal to the first temperature rise rate K1, the actual total energy P generated by the heating element within the preset time period is obtained, the first total energy P1 generated by the heating element within the preset time period under the condition that the heating without burning device is in the highest power state and the aerosol generating substrate is inserted, and the second total energy P2 generated by the heating element within the preset time period under the condition that the heating without burning device is in the lowest power state that can be started and the aerosol generating substrate is inserted. Among them, the first total energy P1 represents the highest total energy generated by the heating element within the preset time period when the aerosol generating substrate is inserted, and the second total energy P2 represents the lowest total energy generated by the heating element within the preset time period when the aerosol generating substrate is inserted, so [P2, P1] represents the normal total energy range generated by the heating element within the preset time period when the aerosol generating substrate is inserted. It is determined whether the actual total energy P is between the first total energy P1 and the second total energy P2, that is, whether the actual total energy P falls within the energy interval [P2, P1]. If the actual total energy P falls within the energy interval [P2, P1], it means that the actual total energy generated by the heating element is within the normal total energy range when the device is inserted into the aerosol generating matrix, and it can be determined that the device is currently inserted into the aerosol generating matrix. If the actual total energy P is outside the energy interval [P2, P1], it means that the actual total energy generated by the heating element exceeds the normal total energy range when the device is inserted into the aerosol generating matrix, so it is determined that the device is not inserted into the aerosol generating matrix. Due to special circumstances such as when foreign objects are inserted into the device, or the device is in a low-power state and no aerosol generating matrix is ​​inserted, the temperature rise curve of the heating element will be significantly different from the temperature rise curve under normal circumstances when the device is inserted into the aerosol generating matrix. The actual total energy calculated in these special circumstances may exceed the normal total energy range [P2, P1]. Therefore, by adding further judgment on the actual total energy, that is, judging that the device is currently inserted with the aerosol generating matrix only when it is determined that the actual total energy P is within the energy interval [P2, P1], it can reduce misjudgment to a certain extent, thereby improving the accuracy of identifying whether the device is inserted with the aerosol generating matrix.

[0061] As an example, Figure 3 It is a schematic diagram of the principle of identifying whether an apparatus is inserted into an aerosol generating matrix based on the heating rate and total energy generated by a heating element, as provided in an embodiment of the present application. Figure 3The horizontal axis represents time, the vertical axis represents the temperature of the heating element, C1 represents the temperature rise curve of the heating element when the heating without burning device is in the highest power state and the aerosol generating matrix is ​​inserted, C2 represents the temperature rise curve of the heating element when the heating without burning device is in the lowest power state that can be started and the aerosol generating matrix is ​​inserted, K1 represents the temperature rise rate of the heating element in the 0-3 second time period when the heating without burning device is in the highest power state and the aerosol generating matrix is ​​inserted, P1 represents the total energy generated by the heating element in the 0-3 second time period when the heating without burning device is in the highest power state and the aerosol generating matrix is ​​inserted, P2 represents the total energy generated by the heating element in the 0-3 second time period when the heating without burning device is in the lowest power state that can be started and the aerosol generating matrix is ​​inserted. Among them, K1 can be obtained by calculating the temperature rise slope of curve C1 at 3 seconds, P1 and P2 can be obtained by calculating the energy integral, and P1 is the curve C1 and Figure 3 The area of ​​the shaded part enclosed by the two dotted lines in the figure, P2 is the area of ​​the shaded part enclosed by the two dotted lines in the figure, and P2 is the area of ​​the shaded part enclosed by the two dotted lines in the figure. Figure 3 The area of ​​the shaded part enclosed by the two dotted lines, P1 and P2, can be calculated according to the formula Σ(T 当前 -T 前一时刻 ) 2 ×Δt calculated, T 当前 Indicates the actual temperature of the heating element at the current moment, T 前一时刻 Indicates the actual temperature of the heating element at the previous moment, and Δt indicates the time difference between the two moments. The calculated K1, P1, and P2 are stored in the register Flash of the device. After detecting the actual heating rate K of the heating element in the time period of 0-3 seconds and the actual total energy P generated, the parameters are compared. If K>K1, it can be directly determined that the device is not inserted into the aerosol generating matrix; if K≤K1, it continues to determine whether P is in [P2, P1]. If so, it is determined that the device is inserted into the aerosol generating matrix, otherwise it is determined that the device is not inserted into the aerosol generating matrix.

[0062] In one implementation of the embodiment of the present application, the actual temperature rise parameter includes an actual temperature rise rate of the heating element within a preset time period; the reference temperature rise parameter includes a second temperature rise rate of the heating element within a preset time period under the condition that the heating without burning appliance is in a startable minimum power state and the aerosol generating substrate is not inserted; according to the comparison result of the actual temperature rise parameter and the reference temperature rise parameter, determining whether the heating without burning appliance is inserted with the aerosol generating substrate includes:

[0063] If the actual temperature rise rate is less than the second temperature rise rate, it is determined that the heat without burning appliance is inserted into the aerosol generating substrate.

[0064] Assuming that the actual temperature rise parameter obtained includes the actual temperature rise rate K of the heating element within the preset time period, and the reference temperature rise parameter obtained includes the second temperature rise rate K2 of the heating element within the preset time period under the condition that the device is in the minimum power state that can be started and the aerosol generating matrix is ​​not inserted, then compare the actual temperature rise rate K and the second temperature rise rate K2. Referring to the analysis in the previous article, if the battery power is lower, the temperature rise rate of the heating element is also smaller, and the second temperature rise rate K2 corresponds to the minimum power state that can be started, so the second temperature rise rate K2 represents the minimum temperature rise rate of the heating element within the preset time period when the aerosol generating matrix is ​​not inserted. Specifically, if the current battery power of the device is in the minimum power state and the device is not inserted into the aerosol generating matrix, the actual temperature rise rate K detected is approximately equal to the second temperature rise rate K2. If the current battery power of the device is not in the minimum power state and the device is not inserted into the aerosol generating matrix, the actual temperature rise rate K detected will be greater than the second temperature rise rate K2. Therefore, if the actual temperature rise rate K detected is less than the second temperature rise rate K2, it means that the actual temperature rise rate K is less than the minimum temperature rise rate of the heating element within the preset time period when the aerosol generating substrate is not inserted, so it can be determined that the device is currently inserted with the aerosol generating substrate, and the temperature rise rate of the heating element will decrease when the aerosol generating substrate is inserted. On the contrary, if the actual temperature rise rate K detected is greater than or equal to the second temperature rise rate K2, it is temporarily impossible to determine whether the device is inserted with the aerosol generating substrate. At this time, further judgment can be made in combination with the first temperature rise rate K1 and the normal total energy range [P2, P1] described above.

[0065] In an implementation of the embodiment of the present application, the reference temperature rise parameter includes a first temperature rise parameter of the heating element within a preset time period under the condition that the heating without burning appliance is in a current power state and an aerosol generating substrate is inserted, and includes a second temperature rise parameter of the heating element within a preset time period under the condition that the heating without burning appliance is in a current power state and an aerosol generating substrate is not inserted; according to the comparison result of the actual temperature rise parameter and the reference temperature rise parameter, determining whether the heating without burning appliance is inserted with the aerosol generating substrate includes:

[0066] (1) calculating a first difference between an actual heating parameter and a first heating parameter, and calculating a second difference between the actual heating parameter and a second heating parameter;

[0067] (2) If the first difference is greater than the second difference, it is determined that the heat-not-burn appliance is not inserted into the aerosol-generating substrate.

[0068] The device can pre-calculate and store the temperature rise parameters of the heating element within a preset time period under the conditions of various different power states and the insertion of the aerosol generating matrix, as well as the temperature rise parameters of the heating element within a preset time period under the conditions of various different power states and the insertion of the aerosol generating matrix, for example, the temperature rise parameters of the heating element within the preset time period under the condition of 5% power inserted into the aerosol generating matrix, the temperature rise parameters of the heating element within the preset time period under the condition of 5% power not inserted into the aerosol generating matrix, the temperature rise parameters of the heating element within the preset time period under the condition of 50% power inserted into the aerosol generating matrix, the temperature rise parameters of the heating element within the preset time period under the condition of 50% power not inserted into the aerosol generating matrix, the temperature rise parameters of the heating element within the preset time period under the condition of 75% power inserted into the aerosol generating matrix, the temperature rise parameters of the heating element within the preset time period under the condition of 75% power not inserted into the aerosol generating matrix..., and so on.

[0069] After obtaining the actual temperature rise parameter X (specifically, the actual temperature rise rate, the actual temperature rise temperature, etc.) of the heating element within the preset time period, determine the current power state of the device, and then find the first temperature rise parameter X1 of the heating element within the preset time period when the device is in the current power state and the aerosol generating substrate is inserted, and find the second temperature rise parameter X2 of the heating element within the preset time period when the device is in the current power state and the aerosol generating substrate is not inserted. Next, calculate the first difference Y1=|X-X1| between the actual temperature rise parameter X and the first temperature rise parameter X1, and calculate the second difference Y2=|X-X2| between the actual temperature rise parameter X and the second temperature rise parameter X2. If Y1 is greater than Y2, it means that the actual temperature rise parameter X is closer to the temperature rise parameter when the aerosol generating substrate is not inserted, so it is determined that the heating without burning device is not inserted with the aerosol generating substrate; if Y1 is less than Y2, it means that the actual temperature rise parameter X is closer to the temperature rise parameter when the aerosol generating substrate is inserted, so it is determined that the heating without burning device is inserted with the aerosol generating substrate. This operation mode finds the appropriate reference temperature rise parameter according to the current power state of the device, and by comparing whether the actual temperature rise parameter is closer to the temperature rise parameter when the aerosol generating substrate is inserted or closer to the temperature rise parameter when the aerosol generating substrate is not inserted, it can also identify whether the device is currently inserted with the aerosol generating substrate.

[0070] 203. If the heat-not-burn device is not inserted with an aerosol generating substrate, the heating of the heat-not-burn device is turned off.

[0071] If it is determined that the heat-not-burn device has not been inserted with an aerosol-generating substrate, it means that the device is currently started by mistake, so the heating of the device is turned off to reduce power consumption and reduce safety hazards. Conversely, if it is determined that the heat-not-burn device has been inserted with an aerosol-generating substrate, it means that the device is currently in normal use, and the heating element can continue to be heated and controlled according to the standard temperature curve.

[0072] In the technical solution of the embodiment of the present application, after the heating non-combustion appliance starts heating, the actual temperature rise parameters of the heating element within a preset time period are detected; since the temperature rise parameters of the heating element under the condition of inserting an aerosol generating substrate are significantly different from those under the condition of not inserting an aerosol generating substrate, for example, the temperature rise rate of the heating element under the condition of inserting an aerosol generating substrate is significantly lower than the temperature rise rate under the condition of not inserting an aerosol generating substrate, it is possible to identify whether the appliance is currently inserted with an aerosol generating substrate based on the current actual temperature rise parameters of the appliance; if it is determined that the appliance is not inserted with an aerosol generating substrate, it indicates that the appliance is currently started by mistake, and at this time, the heating of the appliance is turned off, thereby reducing power consumption and reducing safety hazards.

[0073] To facilitate understanding of the heating control method of the heat-not-burn appliance provided in the embodiment of the present application, an actual application scenario is listed below.

[0074] like Figure 4 FIG. 1 is a schematic diagram of the operation flow of the heating control method for a heating-without-combustion appliance provided in an embodiment of the present application in an actual application scenario. Figure 4 In the application scenario shown, when the heat-not-burn device starts heating, it will detect the actual temperature rise rate K of the heating element in the time period of 0-3 seconds, and the actual total energy P generated by the heating element in the time period of 0-3 seconds; then, it is first determined whether the actual temperature rise rate K is greater than the first temperature rise rate K1, K1 is the temperature rise rate of the heating element in the time period of 0-3 seconds when the device is in the highest power state and the aerosol generating matrix is ​​inserted; if K>K1, it can be determined that the smoking device is not inserted with the aerosol generating matrix, and the heating of the device is turned off at this time; if K≤K1, the energy value comparison is continued to determine the actual total energy P Whether it is between the first total energy P1 and the second total energy P2, where P1 is the total energy generated by the heating element in the 0-3 second period when the device is in the highest power state and the aerosol generating substrate is inserted, and P2 is the total energy generated by the heating element in the 0-3 second period when the device is in the lowest power state that can be started and the aerosol generating substrate is inserted; if P is not between P1 and P2, it is also determined that the smoking device is not inserted with the aerosol generating substrate, and the heating of the device is turned off; if P is between P1 and P2, it is determined that the smoking device has been inserted with the aerosol generating substrate, and the heating can continue to be heated along the standard temperature curve. Through such a setting, it is possible to identify whether the device is currently inserted with the aerosol generating substrate according to the heating parameters of the device, and automatically turn off the heating of the device when it is determined that the device is not inserted with the aerosol generating substrate, thereby reducing power consumption and reducing safety hazards.

[0075] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0076] A heating control method for a heat-not-burn appliance is mainly described above, and a heating control device for a heat-not-burn appliance will be described below.

[0077] See also Figure 5 In the embodiments of the present application, an embodiment of a heating control device for a heating-not-burning appliance includes:

[0078] The temperature rise parameter detection module 501 is used to detect the actual temperature rise parameters of the heating element of the heat-not-burning appliance within a preset time period after the heat-not-burning appliance starts heating;

[0079] An insertion identification module 502 is used to determine whether the heat-not-burn device is inserted into the aerosol generating substrate according to the actual temperature increase parameters;

[0080] The heating control module 503 is used to turn off the heating of the heat-not-burn device if the heat-not-burn device is not inserted with the aerosol generating substrate.

[0081] In one implementation of the embodiment of the present application, the insertion identification module includes:

[0082] A reference parameter acquisition unit, used to acquire a pre-stored reference temperature rise parameter; wherein the reference temperature rise parameter includes a temperature rise parameter of the heating element within a preset time period under the condition that the heat-without-combustion device is in a specified power state and an aerosol generating substrate is inserted, and / or a temperature rise parameter of the heating element within a preset time period under the condition that the heat-without-combustion device is in a specified power state and no aerosol generating substrate is inserted;

[0083] The parameter comparison unit is used to determine whether the heat-not-burn device is inserted into the aerosol generating substrate according to the comparison result of the actual temperature rise parameter and the reference temperature rise parameter.

[0084] In one implementation of the embodiment of the present application, the actual temperature rise parameter includes the actual temperature rise rate of the heating element within a preset time period; the reference temperature rise parameter includes the first temperature rise rate of the heating element within a preset time period under the condition that the heating device without burning is in the highest power state and the aerosol generating substrate is inserted; the parameter comparison unit includes:

[0085] The first determination subunit is used to determine that the heat-not-burn appliance is not inserted into the aerosol generating substrate if the actual temperature rise rate is greater than the first temperature rise rate.

[0086] In an implementation of the embodiment of the present application, the actual temperature rise parameter also includes the actual total energy generated by the heating element within a preset time period; the reference temperature rise parameter also includes the first total energy generated by the heating element within a preset time period under the condition that the heating without burning appliance is in the highest power state and the aerosol generating substrate is inserted, and includes the second total energy generated by the heating element within the preset time period under the condition that the heating without burning appliance is in the lowest power state that can be started and the aerosol generating substrate is inserted; the parameter comparison unit also includes:

[0087] The second determination subunit is used to determine that the heat-not-burn appliance is not inserted with the aerosol generating substrate if the actual temperature rise rate is less than or equal to the first temperature rise rate and the actual total energy is not between the first total energy and the second total energy.

[0088] In one implementation of the embodiment of the present application, the actual temperature rise parameter includes the actual temperature rise rate of the heating element within a preset time period; the reference temperature rise parameter includes the second temperature rise rate of the heating element within a preset time period under the condition that the heating non-combustion device is in the minimum power state that can be started and the aerosol generating substrate is not inserted; the parameter comparison unit includes:

[0089] The third determination subunit is used to determine that the heat-not-burn device is inserted into the aerosol generating substrate if the actual temperature rise rate is less than the second temperature rise rate.

[0090] In one implementation of the embodiment of the present application, the reference temperature rise parameter includes a first temperature rise parameter of the heating element within a preset time period under the condition that the heating without burning device is in the current power state and the aerosol generating substrate is inserted, and includes a second temperature rise parameter of the heating element within a preset time period under the condition that the heating without burning device is in the current power state and the aerosol generating substrate is not inserted; the parameter comparison unit includes:

[0091] a parameter difference calculation subunit, used to calculate a first difference between an actual heating parameter and a first heating parameter, and to calculate a second difference between the actual heating parameter and a second heating parameter;

[0092] The fourth determination subunit is used to determine that the heat-not-burn appliance is not inserted with the aerosol generating substrate if the first difference is greater than the second difference.

[0093] In one implementation of the embodiment of the present application, the preset time period is within the preheating stage of the heating element.

[0094] An embodiment of the present application further provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the heating control method for a heating non-combustion appliance as described in any of the above embodiments is implemented.

[0095] Figure 6is a schematic diagram of a controller provided in an embodiment of the present application. Figure 6 As shown, the controller 6 of this embodiment includes: a processor 60, a memory 61, and a computer program 62 stored in the memory 61 and executable on the processor 60. When the processor 60 executes the computer program 62, the steps in the above-mentioned heating control method of the heating-not-burning appliance are implemented, for example Figure 2 Alternatively, when the processor 60 executes the computer program 62, the functions of each module / unit in the above-mentioned device embodiments are realized, for example Figure 5 Functions of modules 501 to 503 are shown.

[0096] The computer program 62 may be divided into one or more modules / units, which are stored in the memory 61 and executed by the processor 60 to complete the present application. The one or more modules / units may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program 62 in the controller 6.

[0097] The processor 60 may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0098] The memory 61 may be an internal storage unit of the controller 6, such as a hard disk or memory of the controller 6. The memory 61 may also be an external storage device of the controller 6, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the controller 6. Further, the memory 61 may also include both an internal storage unit of the controller 6 and an external storage device. The memory 61 is used to store the computer program and other programs and data required by the controller. The memory 61 may also be used to temporarily store data that has been output or is to be output.

[0099] The present application also provides a heating without burning device, which includes: Figure 6 Controller shown.

[0100] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0101] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0102] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0103] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0104] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the system embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0105] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0106] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0107] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0108] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A heating control method for a heat-not-burn appliance, characterized in that: include: After the heating without burning appliance starts heating, detecting the actual temperature rise parameters of the heating element of the heating without burning appliance within a preset time period; determining whether the heat-without-burning device is inserted into an aerosol-generating substrate according to the actual temperature-rise parameter; If the heat-not-burn appliance is not inserted with an aerosol-generating substrate, the heating of the heat-not-burn appliance is turned off.

2. The method according to claim 1, characterized in that The step of determining whether the heating without burning device is inserted into the aerosol generating substrate according to the actual temperature rise parameter comprises: Obtaining pre-stored reference temperature rise parameters; wherein the reference temperature rise parameters include temperature rise parameters of the heating element within the preset time period under the condition that the heat-without-combustion device is in a specified power state and an aerosol generating substrate is inserted, and / or temperature rise parameters of the heating element within the preset time period under the condition that the heat-without-combustion device is in a specified power state and no aerosol generating substrate is inserted; According to the comparison result of the actual temperature rise parameter and the reference temperature rise parameter, it is determined whether the heat without burning device is inserted into the aerosol generating substrate.

3. The method according to claim 2, characterized in that The actual temperature rise parameter includes the actual temperature rise rate of the heating element within the preset time period; the reference temperature rise parameter includes the first temperature rise rate of the heating element within the preset time period under the condition that the heating without burning device is in the highest power state and the aerosol generating substrate is inserted; the determining whether the heating without burning device is inserted with the aerosol generating substrate according to the comparison result of the actual temperature rise parameter and the reference temperature rise parameter includes: If the actual temperature rise rate is greater than the first temperature rise rate, it is determined that the heat-not-burn appliance is not inserted with an aerosol-generating substrate.

4. The method according to claim 3, characterized in that The actual temperature rise parameter also includes the actual total energy generated by the heating element within the preset time period; the reference temperature rise parameter also includes the first total energy generated by the heating element within the preset time period under the condition that the heat-not-burn device is in the highest power state and the aerosol generating substrate is inserted, and includes the second total energy generated by the heating element within the preset time period under the condition that the heat-not-burn device is in the lowest power state that can be started and the aerosol generating substrate is inserted; The step of determining whether the heat-not-burn device is inserted into an aerosol generating substrate according to a comparison result of the actual temperature rise parameter with the reference temperature rise parameter further comprises: If the actual temperature rise rate is less than or equal to the first temperature rise rate, and the actual total energy is not between the first total energy and the second total energy, it is determined that the heat-not-burn appliance is not inserted with an aerosol-generating substrate.

5. The method according to claim 2, characterized in that The actual temperature rise parameter includes the actual temperature rise rate of the heating element within the preset time period; the reference temperature rise parameter includes a second temperature rise rate of the heating element within the preset time period under the condition that the heating without burning device is in the lowest power state that can be started and the aerosol generating substrate is not inserted; the determining whether the heating without burning device is inserted with the aerosol generating substrate according to the comparison result of the actual temperature rise parameter and the reference temperature rise parameter includes: If the actual temperature rise rate is less than the second temperature rise rate, it is determined that the heat without burning appliance is inserted into the aerosol generating substrate.

6. The method according to claim 2, characterized in that The reference temperature rise parameter includes a first temperature rise parameter of the heating element within the preset time period under the condition that the heating without burning device is in the current power state and the aerosol generating substrate is inserted, and a second temperature rise parameter of the heating element within the preset time period under the condition that the heating without burning device is in the current power state and the aerosol generating substrate is not inserted; the determining whether the heating without burning device is inserted with the aerosol generating substrate according to the comparison result of the actual temperature rise parameter and the reference temperature rise parameter includes: calculating a first difference between the actual temperature increase parameter and the first temperature increase parameter, and calculating a second difference between the actual temperature increase parameter and the second temperature increase parameter; If the first difference is greater than the second difference, it is determined that the heat-not-burn appliance is not inserted with an aerosol-generating substrate.

7. The method according to any one of claims 1 to 6, characterized in that: The preset time period is within the preheating stage of the heating element.

8. A heating control device for a heat-not-burn appliance, characterized in that: include: A temperature rise parameter detection module, used to detect actual temperature rise parameters of the heating element of the heat-without-combustion device within a preset time period after the heat-without-combustion device starts heating; an insertion identification module, for determining whether the heat-not-burn device is inserted into an aerosol generating substrate according to the actual temperature increase parameter; A heating control module is used to turn off the heating of the heat-not-burn device if the heat-not-burn device is not inserted with an aerosol generating substrate.

9. A controller comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the heating control method for the heating non-combustion appliance according to any one of claims 1 to 7 is implemented.

10. A heating without burning device, characterized in that: Comprising a controller as claimed in claim 9.

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