Puff count detection method and system

Abstract

The present invention provides a puff count detection method and system. Specifically, a heat-not-burn smoking device is preheated to an initial temperature and then maintained at a constant temperature. During a first constant temperature stage, a voltage detection module is used to collect a first voltage across a battery. A temperature adjustment module is used to detect the temperature of the heating element, and the temperature is adjusted to a preset temperature. The temperature is maintained at the preset temperature to enter a second constant temperature stage. During the second constant temperature stage, the voltage detection module is again used to detect a second voltage across the battery. After obtaining the voltage values ​​during the two constant temperature stages, the puff count is determined by a puff count detection module in combination with preset conditions. Compared to existing technologies, the present invention detects the number of puffs through voltage changes. It avoids interference with puff count measurement by the constant temperature control program. It also reduces existing power components, streamlines the overall structure, reduces processor computation, and improves overall computational efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco detection, and in particular to a method and system for detecting the number of puffs. Background Art

[0002] Currently, most heat-not-burn smoking devices are based on resistance heating, and most do not have a puff metering function.

[0003] Some existing smoking devices measure puff counts by detecting changes in the heater's temperature. The principle is: when the user is not puffing, the temperature sensor returns a relatively stable value. However, when the user takes a puff, the airflow through the temperature sensor, due to airflow routing, causes a dramatic temperature change, thus detecting the user's puffing. Other smoking devices measure puff counts by detecting changes in the heater's temperature. The principle is: the device's program scans the heater's temperature at a predetermined frequency. When the user is not puffing, the heater's temperature remains relatively stable. However, when the user takes a puff, the user's puffing removes a significant amount of heat, causing the heater's temperature to drop. This temperature change is detected by the program and thus indicates the user's puffing. However, this method has a problem: when the heater's temperature drops, the device intelligently increases its power to quickly return the temperature to the target. However, during this period, the user's puffs are relatively shallow and prolonged, causing the heater's temperature to quickly recover, which can affect the puff count. This means that the temperature change is not noticeable, resulting in missed puffs.

[0004] However, the existing puff counting method has technical problems such as complex structure and high computational complexity. Therefore, it is an urgent problem to be solved by those skilled in the art to provide a puff counting detection method and system that can effectively solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a puff count detection method that has clear logic, is safe, effective, reliable, and easy to operate, reduces existing power components, simplifies the overall structure, reduces the processor's computational load, and improves overall computational efficiency.

[0006] Based on the above objectives, the technical solutions provided by the present invention are as follows:

[0007] A method for detecting the number of puffs, comprising the following steps:

[0008] In a first constant temperature stage, obtaining a first voltage across the battery;

[0009] After obtaining the temperature of the heating body, adjust it to the preset temperature and enter the second constant temperature stage;

[0010] In the second constant temperature stage, obtaining a second voltage across the battery;

[0011] The number of puffs is determined according to the first voltage, the second voltage, and preset conditions.

[0012] Preferably, after obtaining the temperature of the heating body, adjusting it to a preset temperature and entering the second constant temperature stage includes the following steps:

[0013] Obtaining the temperature of the heating body, and determining whether the temperature of the heating body is equal to a preset temperature;

[0014] If not, adjusting the temperature of the heating body to the preset temperature;

[0015] Maintain the preset temperature and enter the second constant temperature stage.

[0016] Preferably, the step of obtaining the temperature of the heating body and determining whether the temperature of the heating body is equal to a preset temperature, and if not, adjusting the temperature of the heating body to the preset temperature, comprises the following steps:

[0017] If the temperature of the heating body is greater than the preset temperature, the heating body is cooled down until it reaches the preset temperature and then stops.

[0018] Preferably, the step of obtaining the temperature of the heating body and determining whether the temperature of the heating body is equal to a preset temperature, and if not, adjusting the temperature of the heating body to the preset temperature, comprises the following steps:

[0019] If the temperature of the heating body is lower than the preset temperature, the heating body is heated until it reaches the preset temperature and then stopped.

[0020] Preferably, determining the number of puffs according to the first voltage, the second voltage and a preset condition comprises the following steps:

[0021] When the time periods corresponding to the first voltage and the second voltage are adjacent, obtaining a slope between the first voltage and the second voltage;

[0022] It is determined whether a slope between the first voltage and the second voltage meets a preset condition, and if so, the number of puffs is determined.

[0023] Preferably, the determining whether the slope between the first voltage and the second voltage satisfies a preset condition, and if so, determining the number of puffs, comprises the following steps:

[0024] When the slope between the first voltage and the second voltage is not equal to the preset slope, it is defined as not meeting the preset condition, and the number of puffs is 0;

[0025] When the slope between the first voltage and the second voltage is equal to a preset slope, it is defined as satisfying the preset condition, and the number of puffs is a.

[0026] Preferably, after determining the number of puffs according to the first voltage, the second voltage and preset conditions, the method further includes the following steps:

[0027] Updating the number of puffs according to a preset formula;

[0028] The preset formula is specifically:

[0029] ;

[0030] in, is the number of puffs in the current cycle time period, The number of puffs in the previous cycle time period.

[0031] A puff count detection system, comprising:

[0032] A voltage detection module, configured to obtain a first voltage across the battery during a first constant temperature stage;

[0033] The temperature adjustment module is used to obtain the temperature of the heating body and adjust it to the preset temperature to enter the second constant temperature stage;

[0034] The voltage detection module is further configured to obtain a second voltage across the battery during a second constant temperature stage;

[0035] The puff count detection module is configured to determine the puff count based on the first voltage, the second voltage, and preset conditions.

[0036] Preferably, the temperature adjustment module includes:

[0037] A temperature acquisition submodule, used to acquire the temperature of the heating body;

[0038] A judging submodule, configured to judge whether the temperature of the heating element is equal to a preset temperature;

[0039] A temperature adjustment submodule, configured to adjust the temperature of the heating body to a preset temperature when the temperature of the heating body is not equal to the preset temperature;

[0040] The constant temperature submodule is used to maintain the preset temperature and enter the second constant temperature stage.

[0041] The present invention provides a method for detecting the number of puffs. Specifically, a heat-not-burn smoking device is preheated to an initial temperature and then maintained at a constant temperature. During a first constant temperature stage, a voltage detection module is used to collect a first voltage across a battery. A temperature adjustment module is used to detect the temperature of the heating element. The temperature is adjusted to a preset temperature and maintained at the preset temperature to enter a second constant temperature stage. During the second constant temperature stage, the voltage detection module is again used to detect a second voltage across the battery. After obtaining the voltage values ​​during the two constant temperature stages, the puff count is determined by a puff count detection module in combination with preset conditions. Compared to existing technologies, the present invention detects the number of puffs through voltage changes. It avoids interference with puff count measurement by the constant temperature control program. It also reduces existing power components, streamlines the overall structure, reduces processor computation, and improves overall computational efficiency.

[0042] The present invention also provides a puff count detection system, which has the same technical concept as this method, solves the same technical problem, and should have the same beneficial effects, so it will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0044] Figure 1 A flowchart of a puff count detection method provided by an embodiment of the present invention;

[0045] Figure 2 A flowchart of step S2 provided in an embodiment of the present invention;

[0046] Figure 3 A flowchart of step S4 provided in an embodiment of the present invention;

[0047] Figure 4 A flowchart of step B2 provided in an embodiment of the present invention;

[0048] Figure 5 A schematic diagram of the structure of a puff count detection system provided by an embodiment of the present invention;

[0049] Figure 6 This is a structural diagram of a temperature adjustment module provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0051] The embodiments of the present invention are written in a progressive manner.

[0052] The present invention provides a puff count detection method and system, which primarily addresses the technical issues in the prior art of puff count counting methods, which are complex in structure and require a lot of calculations.

[0053] like Figure 1 As shown, a method for detecting the number of puffs, comprising the following steps:

[0054] S1. In the first constant temperature stage, obtaining a first voltage across the battery;

[0055] S2. After obtaining the temperature of the heating element, adjust it to the preset temperature and enter the second constant temperature stage;

[0056] S3. In the second constant temperature stage, obtaining a second voltage across the battery;

[0057] S4. Determine the number of puffs according to the first voltage, the second voltage, and preset conditions.

[0058] It should be noted that the principle of detecting the number of puffs is that when there is a puffing action, heat is taken away, causing the resistance of the heating element to decrease and the battery load to increase. According to the operating voltage characteristics of the lithium battery, when the battery load increases, the voltage across the battery will decrease due to the current output capacity. When a large change in the voltage across the battery is detected, it is determined that puffing behavior has occurred and the number of puffs is calculated.

[0059] Based on the above principle, steps S1 to S3 are to obtain the first voltage and the second voltage at both ends of the battery through two different constant temperature stages, thereby avoiding interference of the constant temperature control program with the number of ports measurement;

[0060] Step S4 is to set corresponding preset conditions, combine the first voltage and the second voltage to determine whether the user has a puffing behavior, and calculate the number of puffs after the determination.

[0061] In this embodiment, when in the first constant temperature stage, since there is no puffing behavior, the first voltage waveform detected at this time is a fixed waveform, with a maximum value of 3.75V and a minimum value of 3.5625V. The high voltage accounts for about 94%, and the average voltage is about 3.74V. The voltage drop is caused by the position temperature; when the user has a puffing behavior, the puffing takes away the heat, and the surface temperature of the heating element drops, resulting in a smaller resistance value of the heating element, which causes the battery load to increase. The voltage across the battery will form a more obvious drop due to the increase in load. At this time, it is determined that a puffing behavior is detected, and the number of puffs is accumulated by 1; when there is a puffing behavior, the battery voltage drops to 3.4125V, which is a significant drop compared to the constant temperature and no puffing.

[0062] like Figure 2 As shown, preferably, S2 includes the following steps:

[0063] A1. Get the temperature of the heating element and determine whether the temperature is equal to the preset temperature;

[0064] A2. If not, adjust the heating element temperature to the preset temperature;

[0065] A3. Maintain the preset temperature and enter the second constant temperature stage.

[0066] In steps A1 to A3, the temperature of the heating body in the heat-not-burn cigarette assembly is collected by the temperature collection submodule, and the heating body temperature value is input into the judgment submodule; the judgment submodule compares the actual temperature value of the heating body with the preset temperature value. When the actual temperature value of the heating body is different from the preset temperature value, the heating body is adjusted to the preset temperature, and the preset temperature is maintained by the constant temperature submodule to enter the second constant temperature stage.

[0067] Preferably, steps A1 and A2 include the following steps:

[0068] If the temperature of the heating element is higher than the preset temperature, the heating element will be cooled down until it reaches the preset temperature and then stops.

[0069] During actual use, when the temperature of the heating body is higher than the preset temperature, the temperature adjustment submodule is used to cool the heating body, so that the heating body continues to cool down until it reaches the preset temperature and then stops adjusting.

[0070] Preferably, steps A1 and A2 include the following steps:

[0071] If the temperature of the heating element is lower than the preset temperature, the heating element will be heated up until it reaches the preset temperature and then stop.

[0072] During actual use, when the temperature of the heating body is lower than the preset temperature, the temperature adjustment submodule is used to reduce the temperature of the heating body so that the temperature of the heating body continues to decrease until it reaches the preset temperature and then stops adjusting.

[0073] like Figure 3 As shown, preferably, step S4 includes the following steps:

[0074] B1. When the time periods corresponding to the first voltage and the second voltage are adjacent, obtaining the slope between the first voltage and the second voltage;

[0075] B2. Determine whether the slope between the first voltage and the second voltage meets a preset condition. If so, determine the number of puffs.

[0076] In steps B1 to B2, when the time periods corresponding to the first voltage and the second voltage are adjacent, the slope between the first voltage and the second voltage is calculated; and the slope between the two is used to determine whether the user has taken a puff, thereby determining the number of puffs.

[0077] In this embodiment, in two adjacent time periods, the first voltage obtained is , the second voltage obtained is , calculate the slope of the first voltage and the second voltage, that is, k=1, or k is set within a certain threshold range of 1 according to actual conditions, as a preset condition, and whether the preset condition is met is determined to determine whether there is a puffing behavior, and then the number of puffs is determined.

[0078] like Figure 4 As shown, preferably, step B2 includes the following steps:

[0079] C1. When the slope between the first voltage and the second voltage is not equal to the preset slope, it is defined as not meeting the preset condition and the number of puffs is 0;

[0080] C2. When the slope between the first voltage and the second voltage is equal to the preset slope, it is defined as satisfying the preset condition, and the number of puffs is a.

[0081] In steps C1 and C2, when k = 1 or falls within a certain threshold range of 1, that is, the preset condition is met, and the current number of puffs is defined as a times; when k ≠ 1 or does not fall within a certain threshold range of 1, that is, the preset condition is not met, the current number of puffs is defined as 0 times.

[0082] Preferably, after step B2, the method further includes the following steps:

[0083] Update the number of puffs according to a preset formula;

[0084] The preset formula is:

[0085] ;

[0086] in, is the number of puffs in the current cycle time period, The number of puffs in the previous cycle time period.

[0087] In actual application, after the current number of puffs is determined, the number of puffs is updated according to the above preset formula in the next cycle.

[0088] like Figure 5 As shown, a puff count detection system includes:

[0089] A voltage detection module, configured to obtain a first voltage across the battery during a first constant temperature stage;

[0090] The temperature adjustment module is used to obtain the temperature of the heating body, adjust it to the preset temperature, and enter the second constant temperature stage;

[0091] The voltage detection module is further used to obtain a second voltage across the battery during the second constant temperature stage;

[0092] The puff count detection module is configured to determine the puff count based on the first voltage, the second voltage, and a preset condition.

[0093] In actual application, the present invention also discloses a puff count detection system, which specifically includes a voltage detection module, a temperature adjustment module, and a puff count detection module. The functions of the above modules correspond to steps S1 to S4 in the detection method.

[0094] like Figure 6 As shown, preferably, the temperature adjustment module includes:

[0095] Temperature acquisition submodule, used to collect the temperature of the heating body;

[0096] A judgment submodule is used to judge whether the temperature of the heating body is equal to the preset temperature;

[0097] The temperature adjustment submodule is used to adjust the temperature of the heating body to the preset temperature when the temperature of the heating body is not equal to the preset temperature;

[0098] The constant temperature submodule is used to maintain the preset temperature and enter the second constant temperature stage.

[0099] During actual use, the temperature adjustment module is provided with a temperature acquisition submodule, a judgment submodule, a temperature adjustment submodule and a constant temperature submodule, and the functions of the above modules correspond to the implementation of steps A1 to A3.

[0100] In the embodiments provided in this application, it should be understood that the disclosed methods and systems can be implemented in other ways. The system embodiments described above are merely illustrative. For example, the division of modules is merely a logical function division. In actual implementation, there may be other division methods, such as: multiple modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0101] In addition, all functional modules in the embodiments of the present invention may be integrated into one processor, or each module may be a separate device, or two or more modules may be integrated into one device; the functional modules in the embodiments of the present invention may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0102] Those skilled in the art will understand that all or part of the steps of the above-mentioned method embodiment can be completed by program instructions and related hardware. The aforementioned program instructions can be stored in a computer-readable storage medium. When the program instructions are executed, the steps of the above-mentioned method embodiment are executed; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM), magnetic disks or optical disks, and other media that can store program codes.

[0103] It should be understood that the use of "system," "device," "unit," and / or "module" in this application is merely a method for distinguishing different components, elements, parts, portions, or assemblies at different levels. However, if other terms can achieve the same purpose, the terms may be replaced by other expressions.

[0104] As used in this application and the claims, unless the context clearly indicates an exception, the terms "a," "an," "an," and / or "the" are not intended to refer to the singular and may include the plural, unless the context clearly indicates otherwise. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements. The phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, product, or apparatus that includes the elements.

[0105] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0106] If a flow chart is used in this application, the flow chart is used to illustrate the operations performed by the system according to the embodiments of the application. It should be understood that the previous or subsequent operations are not necessarily performed in exact order. Instead, the steps can be processed in reverse order or simultaneously. At the same time, other operations can be added to these processes, or one or more operations can be removed from these processes.

[0107] The above describes in detail the puff count detection method and system provided by the present invention. The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is to be construed in the widest possible manner consistent with the principles and novel features disclosed herein.

Claims

1. A method for detecting the number of puffs, characterized in that: The steps include: Preheat the heat-not-burn smoking device to the original temperature and maintain the temperature constant to enter the first constant temperature stage; In a first constant temperature stage, obtaining a first voltage across the battery; After obtaining the temperature of the heating body, adjust it to the preset temperature and enter the second constant temperature stage; In the second constant temperature stage, obtaining a second voltage across the battery; determining the number of puffs according to the first voltage, the second voltage, and a preset condition; After obtaining the temperature of the heating body, the temperature is adjusted to a preset temperature and the second constant temperature stage is entered, which includes the following steps: Obtaining the temperature of the heating body, and determining whether the temperature of the heating body is equal to a preset temperature; If not, adjusting the temperature of the heating body to the preset temperature; Maintaining the preset temperature and entering the second constant temperature stage; Determining the number of puffs according to the first voltage, the second voltage, and a preset condition comprises the following steps: When the time periods corresponding to the first voltage and the second voltage are adjacent, obtaining a ratio of the first voltage to the second voltage; It is determined whether the ratio of the first voltage to the second voltage meets a preset condition, and if so, the number of puffs is determined.

2. The method for detecting the number of puffs according to claim 1, wherein: The step of obtaining the temperature of the heating body and determining whether the temperature of the heating body is equal to a preset temperature, and if not, adjusting the temperature of the heating body to the preset temperature, comprises the following steps: If the temperature of the heating body is greater than the preset temperature, the heating body is cooled down until it reaches the preset temperature and then stops.

3. The method for detecting the number of puffs according to claim 1, wherein: The step of obtaining the temperature of the heating body and determining whether the temperature of the heating body is equal to a preset temperature, and if not, adjusting the temperature of the heating body to the preset temperature, comprises the following steps: If the temperature of the heating body is lower than the preset temperature, the heating body is heated until it reaches the preset temperature and then stopped.

4. The method for detecting the number of puffs according to claim 1, wherein: The determining whether the ratio of the first voltage to the second voltage satisfies a preset condition, and if so, determining the number of puffs, comprises the following steps: When the ratio of the first voltage to the second voltage is not equal to the preset ratio, it is defined as not meeting the preset condition, and the number of puffs is 0; When the ratio of the first voltage to the second voltage is equal to a preset ratio, it is defined as satisfying the preset condition, and the number of puffs is a.

5. The method for detecting the number of puffs according to claim 4, wherein: After determining the number of puffs according to the first voltage, the second voltage and preset conditions, the method further includes the following steps: Updating the number of puffs according to a preset formula; The preset formula is specifically: ； in, is the number of puffs in the current cycle time period, The number of puffs in the previous cycle time period.

6. A puff count detection system, characterized in that: include: The preheating module is used to preheat the heat-not-burn smoking device and maintain a constant temperature after reaching the original temperature, entering the first constant temperature stage; A voltage detection module, configured to obtain a first voltage across the battery during a first constant temperature stage; The temperature adjustment module is used to obtain the temperature of the heating body, adjust it to the preset temperature, and enter the second constant temperature stage; The voltage detection module is further configured to obtain a second voltage across the battery during a second constant temperature stage; a puff count detection module, configured to determine the puff count based on the first voltage, the second voltage, and a preset condition; The temperature adjustment module includes: A temperature acquisition submodule, used to acquire the temperature of the heating body; A judging submodule, configured to judge whether the temperature of the heating element is equal to a preset temperature; A temperature adjustment submodule, configured to adjust the temperature of the heating body to a preset temperature when the temperature of the heating body is not equal to the preset temperature; A constant temperature submodule, configured to maintain the preset temperature and enter the second constant temperature stage; The puff count detection module includes: a ratio submodule, configured to obtain a ratio of the first voltage to the second voltage when the time periods corresponding to the first voltage and the second voltage are adjacent; The puff count submodule is configured to determine whether the ratio of the first voltage to the second voltage satisfies a preset condition, and if so, determine the puff count.

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