Temperature calibration method of heating smoking set and heating smoking set

Abstract

The invention belongs to the technical field of heating smoking sets, and provides a temperature calibration method for a heating smoking set and the heating smoking set, and the method comprises the steps: obtaining the heating temperature of a heating body, and carrying out the judgment on the basis of a corresponding first resistance and first time when the heating temperature reaches a first standard temperature; by setting the same calibration time, temperature calibration is carried out on the heating smoking set at the same temperature, temperature control errors caused by different temperature calibration time are avoided, the problem that the calibration temperatures of the smoking sets in batches are inconsistent is solved, and further, by carrying out multiple different temperature calibration on the heating smoking set, the temperature calibration accuracy is improved. And secondary calibration is carried out on the heating smoking set which fails in primary calibration, so that the accuracy of temperature calibration on the heating smoking set is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of heated smoking articles, and in particular relates to a temperature calibration method of a heated smoking article and a heated smoking article. Background Art

[0002] The heating element is an important part of the heated tobacco set. The power supply is controlled to transmit electrical energy to the heating element so that the heating element generates heat to evaporate or heat the tobacco. The heating element needs to be temperature calibrated before the heated tobacco set leaves the factory. During the temperature calibration process, the measured overall resistance of the heating element includes the true resistance of the heating element and the interference resistance, where the interference resistance may include the resistance of the circuit board, the resistance of the solder joint, and the resistance of the heating element pin.

[0003] The inventors found that the different time taken to complete the same temperature calibration will cause errors in temperature control. As the calibration time continues to increase, the interference resistance has an increasingly greater impact on the overall resistance of the heating element, and the accuracy of the heating element temperature calibration decreases, leading to the problem of inconsistent temperatures in batches of smoking devices. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a temperature calibration method and a heating smoking device. The present invention limits the time for calibrating the temperature and controls the time for calibrating a certain temperature within a certain range, thereby solving the problem of inconsistent temperature of batch smoking devices.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In a first aspect, the present invention provides a temperature calibration method for a heated smoking device, wherein the heated smoking device comprises: a heating chamber, a heating element, a power supply, a power supply chamber, and a control component, wherein the heating element is used to heat an aerosol-forming substrate contained in the heating chamber during operation to generate an aerosol, wherein the resistance of the heating element changes with the temperature of the heating element, the power supply chamber is used to contain the power supply, and the control component is used to control the electric energy transmitted by the power supply to the heater during operation, wherein the temperature calibration method comprises:

[0007] Step A: starting the heating smoking device to heat the heating element, and starting the timer at the same time;

[0008] Step B: When the heating element is heated to the first standard temperature, the resistance of the heating element is measured and recorded as the first resistance, and the timer time is recorded as the first time;

[0009] Step C: If the first time is less than or equal to the first calibration time threshold, continue to step D; if the first time is greater than the first calibration time threshold, terminate the heating of the heating element, wait for the heating element to cool to room temperature, and then re-execute step A and step B; if the first time is less than or equal to the first calibration time threshold, continue to step D; if the first time is still greater than the first calibration time threshold, execute step Z;

[0010] Step D: When the heating element continues to be heated to the second standard temperature, the resistance of the heating element is measured and recorded as the second resistance, and the time of the timer is recorded as the second time;

[0011] Step E: If the second time is less than or equal to the second calibration time threshold, continue to step F; if the second time is greater than the second calibration time threshold, terminate the heating of the heating element, wait for the heating element to cool to room temperature, and then re-execute step A, step B, step C and step D; if the second time is less than or equal to the second calibration time threshold, continue to step F; if the second time is still greater than the second calibration time threshold, execute step Z;

[0012] Step F: terminating the heating of the heating element and recording the first resistance and the second resistance;

[0013] Step Z: terminating the heating of the heating element and reporting an error.

[0014] Furthermore, the control component includes a first memory for storing a temperature conversion program, and a second memory for storing a heating temperature timing control program.

[0015] Further, in step F, the first resistor and the second resistor are recorded in the first memory.

[0016] Furthermore, the first calibration time threshold and the second calibration time threshold are 0-300s.

[0017] Furthermore, the first calibration temperature and the second calibration temperature are 150° C.-420° C.; the first calibration temperature and the second calibration temperature are different.

[0018] In a second aspect, the present invention further provides a heated smoking device, comprising a heating element, wherein the temperature of the heating element is calibrated using the temperature calibration method described in the first aspect.

[0019] Furthermore, a heating smoking device includes: a heating chamber, a heating element, a power supply, a power supply chamber and a control component, wherein the heating element is used to heat an aerosol-forming matrix contained in the heating chamber during operation to generate an aerosol, and the resistance of the heating element changes with the temperature of the heating element, the power supply chamber is used to contain the power supply, and the control component is used to control the electric energy transmitted by the power supply to the heater during operation, and the control component includes a first memory for storing a temperature conversion program and a second memory for storing a heating temperature timing control program, and the parameters of the temperature conversion program include the first standard temperature, the second standard temperature, the first resistance and the second resistance. In a second aspect, the present invention also provides a heating smoking device, including: a heating element, and the temperature calibration of the heating element adopts the temperature calibration method described in the first aspect.

[0020] In a third aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the temperature calibration method of the heated smoking article described in the first aspect.

[0021] In a fourth aspect, the present invention further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein when the processor executes the program, the steps of the temperature calibration method of the heated smoking device described in the first aspect are implemented.

[0022] In a fifth aspect, the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of the temperature calibration method of the heated smoking device described in the first aspect are implemented.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention can solve the problem of inconsistent temperature of batch smoking tools by limiting the time taken to calibrate the temperature and controlling the time for calibrating a certain temperature within a certain range; after obtaining the heating temperature of the heating element; judging whether the corresponding time satisfies the first preset condition when the heating temperature reaches the first preset condition, if not, stopping heating, and continuing to heat the heating element after the heating element cools down to room temperature; and continuing to judge whether the corresponding time satisfies the first preset condition when the heating temperature reaches the first preset condition, if so, continuing heating, otherwise, stopping heating and reporting an error; judging whether the corresponding time satisfies the second preset condition when the heating temperature reaches the second preset condition, if not, stopping heating. After the heating element cools down to room temperature, the heating element continues to be heated. When the heating temperature reaches the first preset condition, it is continued to be judged whether the corresponding time meets the first preset condition. If so, heating is continued, otherwise, heating is stopped and an error is reported. After the second preset condition is met, the temperature calibration is stopped. By setting the same calibration time, the temperature of the heating tobacco article is calibrated at the same temperature, thereby avoiding the temperature control error caused by different temperature calibration times, and solving the problem of inconsistent calibration temperature of batch tobacco articles. Furthermore, by performing multiple different temperature calibrations on the heating tobacco article and performing a secondary calibration on the heating tobacco article that failed the first calibration, the accuracy of the temperature calibration of the heating tobacco article is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings in the specification that constitute a part of this embodiment are used to provide a further understanding of this embodiment. The schematic embodiments of this embodiment and their descriptions are used to explain this embodiment and do not constitute improper limitations on this embodiment.

[0026] Figure 1 is a flow chart of the method of embodiment 1 of the present invention;

[0027] Figure 2 This is a logic flow chart of the method of embodiment 2 of the present invention. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0030] Embodiment 1:

[0031] As cigarette control is gradually strengthened and people pay more and more attention to health, a type of heat-not-burn e-cigarette has become increasingly popular in recent years. It is a product that mainly converts nicotine and other substances in tobacco into vapor through atomization and other means, and then allows users to inhale it.

[0032] Among them, the heating element is an important part of the heated tobacco utensil. The power supply is controlled to transmit electrical energy to the heating element so that the heating element generates heat to evaporate or heat the tobacco. The heating element needs to be temperature calibrated before the heated tobacco utensil leaves the factory. During the temperature calibration process, the measured overall resistance of the heating element includes the true resistance and interference resistance of the heating element. The interference resistance may include the resistance of the circuit board, the resistance of the solder joint, the resistance of the heating element pin, etc. The different time taken to complete the same temperature calibration will cause errors in temperature control. As the calibration time continues to increase, the interference resistance has an increasingly greater impact on the overall resistance of the heating element, and the accuracy of the heating element temperature calibration also decreases.

[0033] In view of the above problems, this embodiment provides a temperature calibration method for a heating smoking device, comprising:

[0034] Get the heating temperature of the heating element;

[0035] When the heating temperature reaches the first preset condition, it is judged whether the corresponding time satisfies the first preset condition. If not, the heating is stopped, and the heating element is continued to be heated after the heating element cools down to room temperature. When the heating temperature reaches the first preset condition, it is further judged whether the corresponding time satisfies the first preset condition. If so, the heating is continued. Otherwise, the heating is stopped and an error is reported.

[0036] When heating continues, judge whether the corresponding time meets the second preset condition when the heating temperature reaches the second preset condition. If not, stop heating, and continue heating the heating element after the heating element cools down to room temperature. Continue to judge whether the corresponding time meets the first preset condition when the heating temperature reaches the first preset condition. If yes, continue heating, otherwise, stop heating and report an error; when the time meets the second preset condition, stop temperature calibration.

[0037] By setting the same calibration time, the heated smoking utensils are calibrated at the same temperature, which avoids the temperature control error caused by different temperature calibration times and solves the problem of inconsistent calibration temperatures of batch smoking utensils. Furthermore, by performing multiple different temperature calibrations on the heated smoking utensils and performing a secondary calibration on the heated smoking utensils that failed the initial calibration, the accuracy of the temperature calibration of the heated smoking utensils is improved.

[0038] Optionally, the heating smoking device in this embodiment includes a heating chamber, a heating element, a power source, a power source chamber, and a control component, etc. The heating element is used to heat the aerosol-forming matrix contained in the heating chamber during operation to generate an aerosol, and the resistance of the heating element changes with the temperature of the heating element; the power source chamber is used to contain the power source; and the control component is used to control the electric energy transmitted from the power source to the heater during operation.

[0039] like Figure 1 The temperature calibration methods shown include:

[0040] S1, start the heating device to heat the heating element, and start the timer;

[0041] S2. When the heating element is heated to the first standard temperature, the resistance of the heating element is measured and recorded as the first resistance, and the timer time is recorded as the first time;

[0042] S3, if the first time is less than or equal to the first calibration time threshold, continue to execute step S4; if the first time is greater than the first calibration time threshold, terminate the heating of the heating element, wait for the heating element to cool to room temperature, re-execute some embodiments and step S2, if the first time is less than or equal to the first calibration time threshold, continue to execute step S4, if the first time is still greater than the first calibration time threshold, execute step S7;

[0043] S4, when the heating element continues to be heated to the second standard temperature, the resistance of the heating element is measured and recorded as the second resistance, and the timer time is recorded as the second time;

[0044] S5, if the second time is less than or equal to the second calibration time threshold, continue to execute step S6; if the second time is greater than the second calibration time threshold, terminate the heating of the heating element, wait for the heating element to cool to room temperature, re-execute some embodiments, step S2, step S3 and step S4, if the second time is less than or equal to the second calibration time threshold, continue to execute step S6, if the second time is still greater than the second calibration time threshold, execute step S7;

[0045] S6, stopping the heating of the heating element and recording the first resistance and the second resistance;

[0046] S7. Terminate heating of the heating element and report an error.

[0047] In this embodiment, the control component includes a first memory for storing and performing temperature conversion, and a second memory for storing and controlling the heating temperature sequence; in step S6, the first resistor and the second resistor are recorded in the first memory.

[0048] In this embodiment, optionally, the first calibration time threshold and the second calibration time threshold are 0-300s respectively. The first calibration temperature and the second calibration temperature are 150°C-420°C respectively, and the first calibration temperature and the second calibration temperature are different calibration temperatures.

[0049] Embodiment 2:

[0050] In order to further illustrate and supplement the method in Example 1, specifically:

[0051] In the actual resistance, the resistance of the heating element measured by the control system includes two parts, one is the real resistance of the heating element, and the other is the resistance of the circuit board, the resistance of the solder joint and the resistance of the heating element pin, which can be collectively referred to as the interference resistance; the relationship is as follows:

[0052] R 测试阻值 =R 发热体阻值 +R 干扰阻值

[0053] Optionally, the actual resistance of the heating element corresponding to 350°C is 1.5Ω.

[0054] When the heating element is calibrated to 350℃ in 30 seconds, R 发热体阻值 =1.5Ω, due to the short heating time, the heat transfer is negligible, the circuit board and the heating element pin temperature default to 24℃, R 干扰阻值 =0.01Ω, R 测试阻值 =1.51Ω. The system defaults that the heating element's resistance at 350°C is 1.51Ω.

[0055] When the heating element is calibrated to 350℃ in 120s, R 发热体阻值 =1.5Ω, the circuit board and the heating element pins have a long heat transfer time, the temperature is 50℃, R 干扰阻值 =0.03Ω, R 测试阻值 =1.53Ω. The system defaults that the heating element's resistance at 350°C is 1.53Ω.

[0056] When the heating element is calibrated at 350℃ in 120s and the data of 1.53Ω is obtained for temperature control. The smoking device starts heating when its own temperature is 24℃, R 干扰阻值 =0.01Ω, the actual resistance of the heating element will be controlled within R 发热体实际阻值 =R 测试阻值 -R 干扰阻值 =1.52Ω. The actual resistance of the heating element is 0.2Ω greater than the actual resistance at 350℃, and the actual temperature is 15℃ higher than 350℃.

[0057] Based on this, this embodiment provides a temperature calibration method for a heating smoking device. The heating smoking device may include a heating chamber, a heating element, a power supply, a power supply chamber and a control component. The heating element is used to heat an aerosol-forming matrix contained in the heating chamber during operation to generate an aerosol. The resistance of the heating element changes with the temperature of the heating element. The power supply chamber is used to accommodate the power supply. The control component is used to control the electric energy transmitted from the power supply to the heater during operation.

[0058] Wherein, the aerosol-forming article is a smoking article, comprising an aerosol-forming substrate, which generates an aerosol that can be directly inhaled into the lungs of the user through the user's mouth by heating. Optionally, the aerosol-forming substrate is a solid aerosol-forming substrate. The aerosol-forming substrate may include both solid and liquid components. Optionally, the aerosol-forming substrate includes nicotine. In some embodiments, the aerosol-forming substrate includes tobacco.

[0059] Aerosol generating device is used to describe a device that interacts with an aerosol-forming substrate of an aerosol generating article to generate an aerosol. Optionally, the aerosol generating device is a heated smoking article that interacts with an aerosol-generating substrate of an aerosol generating article to generate an aerosol that is directly inhalable into the user's lungs through the user's mouth. The aerosol generating device may be a holder for a smoking article.

[0060] The power source may be any suitable power source, such as a DC voltage source, such as a battery. In one embodiment, the power source is a lithium-ion battery. Alternatively, the power source may be a nickel metal hydride battery, a nickel cadmium battery, or a lithium-based battery, such as lithium cobalt, lithium iron phosphate, lithium titanate, or a lithium polymer battery.

[0061] The control element may be a simple switch. Alternatively, the control element may be an electrical circuit and may include one or more microprocessors or microcontrollers.

[0062] The aerosol generating system may include an aerosol generating device and one or more aerosol generating products. The aerosol generating device is configured with a corresponding number of heating chambers to accommodate the aerosol generating products.

[0063] Temperature calibration methods include:

[0064] S1, start the heating device to heat the heating element, and start the timer;

[0065] S2. When the heating element is heated to the first standard temperature, the resistance of the heating element is measured and recorded as the first resistance, and the timer time is recorded as the first time;

[0066] S3, if the first time is less than or equal to the first calibration time threshold, continue to execute step S4; if the first time is greater than the first calibration time threshold, terminate the heating of the heating element, wait for the heating element to cool to room temperature, re-execute some embodiments and step S2, if the first time is less than or equal to the first calibration time threshold, continue to execute step S4, if the first time is still greater than the first calibration time threshold, execute step S7;

[0067] S4, when the heating element continues to be heated to the second standard temperature, the resistance of the heating element is measured and recorded as the second resistance, and the timer time is recorded as the second time;

[0068] S5, if the second time is less than or equal to the second calibration time threshold, continue to execute step S6; if the second time is greater than the second calibration time threshold, terminate the heating of the heating element, wait for the heating element to cool to room temperature, re-execute some embodiments, step S2, step S3 and step S4, if the second time is less than or equal to the second calibration time threshold, continue to execute step S6, if the second time is still greater than the second calibration time threshold, execute step S7;

[0069] S6, stopping the heating of the heating element and recording the first resistance and the second resistance;

[0070] S7. Terminate heating of the heating element and report an error.

[0071] It can be understood that by setting the same calibration time and calibrating the heated smoking utensils at the same temperature, the temperature control error caused by different temperature calibration times can be avoided, and the problem of inconsistent calibration temperatures of batched smoking utensils can be solved. Furthermore, by performing multiple different temperature calibrations on the heated smoking utensils and performing a secondary calibration on the heated smoking utensils that failed the first calibration, the accuracy of the temperature calibration of the heated smoking utensils can be improved.

[0072] It should be noted that as the heating time of the heating element increases, the heat is continuously transferred. The temperature of the heating element will slowly drop. This is a problem of batch production, but the heating instructions of the heating device are not consistent. This problem can be solved by changing the heating instructions, and it will not cause problems for batch production. Therefore, you can try to set a shorter calibration time to calibrate the temperature of the heating device.

[0073] In this embodiment, the control component includes a first memory for storing and performing temperature conversion, and a second memory for storing and controlling the heating temperature sequence; in step S6, the first resistor and the second resistor are recorded in the first memory.

[0074] In some embodiments, optionally, the first calibration time threshold and the second calibration time threshold are 0-300s respectively. The first calibration temperature and the second calibration temperature are 150°C-420°C respectively, and the first calibration temperature and the second calibration temperature are different calibration temperatures.

[0075] In some embodiments, optionally, the first calibration time threshold may be 20s, and the second calibration time threshold may be 30s. The first calibration temperature is 350°C, and the second calibration temperature is 380°C. It should be noted that those skilled in the art may adjust the first calibration temperature and the second calibration temperature according to specific applications to ensure that the temperature calibration of each heating smoking device is the same time and the same temperature, thereby reducing calibration errors. Based on this, Figure 2 As shown, in some embodiments, the temperature calibration method includes:

[0076] In some embodiments, the heated smoking device is placed at a room temperature of 24° C. to cool for 15 minutes.

[0077] Step S2, start the heating device and heat the heating element, and calibrate the temperature of the heating device, raise the heating temperature of the heating device within 30 seconds, judge whether the heating element can be heated to 350° C. stably, and determine whether the heating element has a fault.

[0078] Step S3, when it is determined that the heating device has been heated to 350°C stably without any fault, continue to increase the heating temperature of the heating device within 30 seconds to determine whether the heating element can be heated from 350°C to 380°C stably, and determine whether the heating element has any fault.

[0079] Step S4, when it is ensured that there is no problem with the temperature calibration results of the heating element at 350°C and 380°C, the first measured heating element resistance corresponding to 350°C and the second tested heating element resistance corresponding to 380°C are stored in the first memory of the heating smoking device.

[0080] Step S5, perform temperature-resistance linear fitting (i.e., fit the heating element temperature-resistance curve according to at least 3 sets of temperature-resistance data) based on the reference temperature and corresponding resistance provided by the heating element manufacturer and the data stored in the first memory in step 4, and store the heating element temperature-resistance curve in the second memory. The subsequent heating smoking device can control the heating of the heating element according to the heating element temperature-resistance curve in the second memory.

[0081] Step S6, when there is a problem with the temperature calibration result of the heating element at 350°C, mark the heating element as the number of calibration failures at 350°C plus 1, re-execute some embodiments and step S2, if there is a problem with the temperature calibration result of the heating element at 350°C again, mark the heating element as a defective product to facilitate further analysis later.

[0082] Step S7, when there is a problem with the temperature calibration result of the heating element at 380°C, mark the heating element as 380°C calibration failure number plus 1, and re-execute step 1. If there is a problem with the temperature calibration result of the heating element at 380°C again, mark the heating element as a defective product to facilitate further analysis later.

[0083] Embodiment 3:

[0084] In order to further illustrate the method in Example 1, the implementation method is further described in detail in this example.

[0085] The temperature coefficient of resistance (TCR) indicates the relative change in resistance when the temperature changes by 1 degree. The unit is ppm / ℃ (i.e. 10E(-6) / ℃). Definition: TCR = dR / (R.dT). In practical applications, the average temperature coefficient of resistance is usually used, which is defined as:

[0086] TCR (average) = (R2-R1) / R1(T2-T1)

[0087] Among them, R2 and R1 are the resistance values ​​corresponding to temperatures T2 and T1, and the obtained TCR is the corresponding value between temperatures T2 and T1.

[0088] In engineering applications, heating element manufacturers usually provide the corresponding resistance and TCR values ​​at 25°C, and the resistance value at the target temperature can be obtained using the definition formula. Heating tobacco products use the resistance temperature coefficient of the heating element for temperature detection and control. For example, the resistance value of the heating element at 350°C is 1.48Ω using the definition formula. When performing temperature control, the circuit system will increase the resistance of the heating element and maintain it at 1.48 ohms.

[0089] According to the rapid heating rate of the smoking device, the battery load capacity, the manufacturing process of the heating element, and other conditions, the resistance of the heating element at room temperature needs to be controlled at 0.7-0.85Ω, and the TCR is controlled between 2000-3300ppm / ℃. Limited by the level of production technology, the resistance error of the heating element at room temperature is ±0.075, and the TCR error is ±150ppm / ℃. This error seriously exceeds the temperature control accuracy requirements of the heating smoking device. Take the resistance R1=0.775Ω and TCR=2800ppm / ℃ at room temperature of 25℃ as an example for calculation, as shown in Table 1.

[0090] Table 1: Temperature resistance relationship comparison table

[0091]

[0092] Taking 350℃ as an example, when R1=0.775Ω, TCR=2800ppm / ℃, the corresponding resistance value of 350℃ is 1.48025Ω. Based on the maximum value of the resistance value and TCR error at room temperature, when R1=0.7Ω, TCR=2650, the corresponding temperature is 446℃, and when R1=0.85Ω, TCR=2950, ​​the corresponding temperature is 1.48025Ω, which is 277℃. It can be seen that the theoretical error caused by the resistance value and TCR at room temperature is ±70℃, which is far beyond the allowable error of the temperature control accuracy of the smoking device.

[0093] The different time taken to complete the same temperature calibration will cause errors in temperature control. The temperature control principle of the heating element is based on the corresponding relationship between the resistance value of the heating element and the temperature. For example, 350℃ corresponds to 1.5Ω. If the resistance value is controlled at 1.5Ω, the system will default to a temperature of 350℃.

[0094] In the actual resistance, the resistance of the heating element measured by the control system includes two parts: 1. The real resistance of the heating element. 2. The resistance of the circuit board, the resistance of the solder joint, the resistance of the heating element pin, etc., which can be collectively referred to as the interference resistance. The relationship is as follows:

[0095] R 测试阻值 =R 发热体阻值 +R 干扰阻值

[0096] The actual resistance of the heating element at 350°C is 1.5Ω.

[0097] When the heating element is calibrated to 350℃ in 30 seconds, R 发热体阻值 =1.5Ω, due to the short heating time, the heat transfer is negligible, the circuit board and the heating element pin temperature default to 24℃, R 干扰阻值 =0.01Ω, R 测试阻值 =1.51Ω. The system defaults that the heating element's resistance at 350°C is 1.51Ω.

[0098] When the heating element is calibrated to 350℃ in 120s, R 发热体阻值 =1.5Ω, the circuit board and the heating element pins have a long heat transfer time, the temperature is 50℃, R 干扰阻值 =0.03Ω, R 测试阻值 =1.53Ω. The system defaults that the heating element's resistance at 350°C is 1.53Ω.

[0099] When the heating element is calibrated at 350℃ in 120s and the data of 1.53Ω is obtained for temperature control. The smoking device starts heating when its own temperature is 24℃, R 干扰阻值 =0.01Ω, the actual resistance of the heating element will be controlled within R 发热体实际阻值 =R 测试阻值 -R 干扰阻值 =1.52Ω. The actual resistance of the heating element is 0.2Ω greater than the actual resistance at 350℃, and the actual temperature is 15℃ higher than 350℃.

[0100] In view of this, the present application provides a temperature calibration method for a heated smoking device. The heated smoking device may include: a heating chamber, a heating element, a power supply, a power supply chamber and a control component. The heating element is used to heat an aerosol-forming matrix contained in the heating chamber during operation to generate an aerosol. The resistance of the heating element changes with the temperature of the heating element. The power supply chamber is used to accommodate the power supply. The control component is used to control the electric energy transmitted from the power supply to the heater during operation.

[0101] Wherein, the aerosol-forming article is a smoking article, comprising an aerosol-forming substrate, which generates an aerosol that can be directly inhaled into the lungs of the user through the user's mouth by heating. Optionally, the aerosol-forming substrate is a solid aerosol-forming substrate. The aerosol-forming substrate may include both solid and liquid components. Optionally, the aerosol-forming substrate includes nicotine. In some embodiments, the aerosol-forming substrate includes tobacco.

[0102] Aerosol generating device is used to describe a device that interacts with an aerosol-forming substrate of an aerosol generating article to generate an aerosol. Optionally, the aerosol generating device is a heated smoking article that interacts with an aerosol-generating substrate of an aerosol generating article to generate an aerosol that is directly inhalable into the user's lungs through the user's mouth. The aerosol generating device may be a holder for a smoking article.

[0103] The power source can be any suitable power source, such as a DC voltage source, such as a battery. In one embodiment, the power source is a lithium-ion battery. Alternatively, the power source can be a nickel metal hydride battery, a nickel cadmium battery, or a lithium-based battery, such as lithium cobalt, lithium iron phosphate, lithium titanate, or a lithium polymer battery.

[0104] The control element may be a simple switch. Alternatively, the control element may be an electrical circuit and may include one or more microprocessors or microcontrollers.

[0105] The aerosol generating system may include an aerosol generating device and one or more aerosol generating products, wherein the aerosol generating device is equipped with a corresponding number of heating chambers to accommodate the aerosol generating products.

[0106] Embodiment 4:

[0107] The present embodiment provides a heating smoking device, which is calibrated using the temperature calibration method described in Example 1. The smoking device includes a heating chamber, a heating element, a power supply, a power supply chamber, and a control component. The heating element is used to heat an aerosol-forming matrix contained in the heating chamber during operation to generate an aerosol. The resistance of the heating element changes with the temperature of the heating element. The power supply chamber is used to contain the power supply. The control component is used to control the electric energy transmitted by the power supply to the heater during operation. The control component includes a first memory for storing a temperature conversion program and a second memory for storing a heating temperature timing control program. The heating smoking device is calibrated by the temperature calibration method provided in the first aspect above. The parameters of the temperature conversion program include a first standard temperature, a second standard temperature, a first resistance, and a second resistance.

[0108] This embodiment sets the same calibration time and performs temperature calibration on the heated smoking articles at the same temperature, thereby avoiding the temperature control error caused by different temperature calibration times, and can solve the problem of inconsistent calibration temperatures of batched smoking articles. Furthermore, by performing multiple different temperature calibrations on the heated smoking articles, and performing a secondary calibration on the heated smoking articles that failed the first calibration, the accuracy of temperature calibration of the heated smoking articles can be improved.

[0109] The present embodiment also provides a temperature measurement system for the heating element of a hot smoking device, comprising a clamping and positioning device, a temperature measuring module and a host computer, wherein the clamping and positioning device is used to clamp and position the heating element, the temperature measuring module is used to measure the heating data of the heating element, the host computer is communicatively connected to the temperature measuring module, and is used to receive the heating data fed back by the temperature measuring module, the temperature measuring module comprises a first temperature measuring device and a second temperature measuring device, the first temperature measuring device and the second temperature measuring device are distributed at different measuring positions, and are used to measure the heating data at different positions of the heating element.

[0110] The host computer may include a display unit, a communication unit, a parameter preset unit, and an alarm unit. The display unit may be used to display a test screen, an operation interface, etc. The test screen may display the heating data of the object under test (e.g., a heated smoking device), and the heating data may include information such as the temperature and heat distribution of the object under test. The operation interface may set the parameters of the temperature measuring device such as the emissivity, data frequency, and temperature measurement mode according to the needs of those skilled in the art.

[0111] The communication unit can be used to establish a communication connection between the host computer and the temperature measurement module. It can be understood that the communication connection can be established by wired or wireless means. For example, the wired communication connection can include serial communication, Ethernet communication, USB communication, etc., and the wireless communication connection can include Wi-Fi, Bluetooth, Zigbee, LoRa, etc.

[0112] It should be noted that those skilled in the art can select a suitable connection method according to the specific application scenario, and this application is not limited thereto.

[0113] It can be understood that this embodiment sets at least two temperature measuring devices distributed at different measurement positions to measure the heating data of the heating element at different viewing angles, so as to improve the accuracy of measuring the real temperature of the heating element and reduce the impact of deviation factors such as the heating position and heating route of the heating element 20.

[0114] In some embodiments, the temperature measuring device includes a first infrared thermal imager and / or a second infrared thermal imager, and the heating element is clamped and positioned by a clamping and positioning device within the first line of sight and / or the second line of sight.

[0115] The infrared thermal imager can realize multiple temperature measurement modes, which can specifically include point measurement mode, average temperature mode and maximum temperature mode. Among them, the point measurement mode can set the temperature of a certain point to be tested through the operation interface. The average temperature mode can set the average temperature of a certain area to be tested through the operation interface. The maximum temperature mode can set the temperature of the highest temperature position in a certain area to be tested through the operation interface of the host computer 40.

[0116] It is understandable that since the heating element does not heat uniformly, there is also a temperature difference inside the heating element. The point measurement mode and the average temperature mode have very high requirements for the accuracy of the fixed position of the heating element, and the test results will be slightly deviated from the position. Therefore, the highest temperature mode can be used to test the heating element, set a temperature measurement area that exceeds the shape of the heating element, put the heating element into the area, and the highest temperature measured is the temperature of the heating element by default.

[0117] In some embodiments, the temperature measurement system is equipped with a device for coating the outer surface of the heating element with a high infrared emissivity material. The device can coat the heating element with a high infrared emissivity material by a magnetron sputtering process, and the emissivity coefficient is generally greater than 0.8, such as aluminum nitride, silicon carbide, etc.

[0118] It is understandable that those skilled in the art can use high-radiation coating technology to coat the outer surface of the heating element with a high-reflectivity material, thereby improving the accuracy of measuring the heating data of the heating element.

[0119] Embodiment 5:

[0120] Based on the above concept, this embodiment also provides a temperature measurement system for the heating element of a hot smoking device, the temperature measurement system comprising: a clamping and positioning device, a temperature measuring module and a host computer, the clamping and positioning device is used to clamp and position the heating element, the temperature measuring module is used to measure the heating data of the heating element, the host computer is communicatively connected to the temperature measuring module, and is used to receive the heating data fed back by the temperature measuring module, the temperature measuring module comprises a first temperature measuring device and a second temperature measuring device, the first temperature measuring device and the second temperature measuring device are distributed at different measuring positions, and are used to measure the heating data of different positions of the heating element.

[0121] The host computer may include a display unit, a communication unit, a parameter preset unit and an alarm unit.

[0122] The display unit can be used to display a test screen, an operation interface, etc. The test screen can display the heating data of the object under test (such as a heated smoking device), and the heating data may include information such as the temperature and heat distribution of the object under test. The operation interface can set the parameters of the temperature measuring device such as the emissivity, data frequency, and temperature measurement mode according to the needs of those skilled in the art.

[0123] The communication unit can be used to establish a communication connection between the host computer and the temperature measurement module. It can be understood that the communication connection can be established by wired or wireless means. For example, the wired communication connection can include serial communication, Ethernet communication, USB communication, etc., and the wireless communication connection can include Wi-Fi, Bluetooth, Zigbee, LoRa, etc.

[0124] It should be noted that those skilled in the art can select a suitable connection method according to the specific application scenario, and this application is not limited thereto.

[0125] It can be understood that the present application sets up at least two temperature measuring devices distributed at different measurement positions to measure the heating data of the heating element at different angles, so as to improve the accuracy of measuring the real temperature of the heating element and reduce the impact of deviation factors such as the heating position and heating route of the heating element 20.

[0126] In some embodiments, the first temperature measuring device and / or the second temperature measuring device is an infrared thermal imager, and the heating element is clamped and positioned by a clamping and positioning device within the first line of sight and / or the second line of sight.

[0127] Since the heating element of the heated smoking device is small in size, the use of contact temperature measurement methods such as thermocouples and thermal resistors to detect the temperature of the heating element will have a great impact on the temperature measurement accuracy and efficiency. Therefore, non-contact temperature measurement methods such as infrared thermal imagers can be used to measure the heating data of the heating element.

[0128] The infrared thermal imager can realize multiple temperature measurement modes, which can specifically include point measurement mode, average temperature mode and maximum temperature mode. Among them, the point measurement mode can set the temperature of a certain point to be tested through the operation interface. The average temperature mode can set the average temperature of a certain area to be tested through the operation interface. The maximum temperature mode can set the temperature of the highest temperature position in a certain area to be tested through the operation interface of the host computer 40.

[0129] It is understandable that since the heating element does not heat uniformly, there is also a temperature difference inside the heating element. The point measurement mode and the average temperature mode have very high requirements for the accuracy of the fixed position of the heating element, and the test results will be slightly deviated from the position. Therefore, the highest temperature mode can be used to test the heating element, set a temperature measurement area that exceeds the shape of the heating element, put the heating element into the area, and the highest temperature measured is the temperature of the heating element by default.

[0130] In some embodiments, the temperature measurement system is configured with a device for coating the outer surface of the heating element with a material having a high infrared emissivity.

[0131] The device can coat the heating element with high infrared emissivity materials through a magnetron sputtering process, and the emissivity coefficient is generally greater than 0.8, such as aluminum nitride, silicon carbide, etc.

[0132] It is understandable that those skilled in the art can use high-radiation coating technology to coat the outer surface of the heating element with a high-reflectivity material, thereby improving the accuracy of measuring the heating data of the heating element.

[0133] Based on the above-mentioned inventive concept, the present application also provides a heating control method for a heated smoking device. The heated smoking device may include: a heating chamber, a heating element, a power supply, a power supply chamber and a control component. The heating element is used to heat an aerosol-forming matrix contained in the heating chamber during operation to generate an aerosol. The resistance of the heating element changes with the temperature of the heating element. The power supply chamber is used to accommodate the power supply. The control component is used to control the electric energy transmitted from the power supply to the heater during operation. The control component includes a first memory of a temperature conversion program and a second memory including a heating temperature timing control program.

[0134] The heating control method may specifically include the following steps:

[0135] Step 1: The control component obtains the ambient temperature correlation data of a reference point close to the heating element in the heating device.

[0136] In some embodiments, the data associated with the ambient temperature within the reference point may refer to the temperature of a temperature sensor set in the environment within the reference point, or a physical quantity related to temperature, such as: the resistance value of electronic components in the environment within the reference point, the voltage and current values ​​of the circuit, etc., or data whose physical parameters can change with temperature changes, for example: an expansion thermometer made based on the principle of thermal expansion, the expansion length of the expansion thermometer can also be the data associated with the ambient temperature within the reference point.

[0137] That is, the ambient temperature associated data within the reference point may be a data type that reflects the temperature according to the physical quantity transformation. The above exemplary parameters may be applied to the present application, but the present application is not limited thereto.

[0138] Step 2: The control component obtains data related to the measured resistance of the heating element.

[0139] In some embodiments, the resistance value associated data of the heating element can be measured by a resistance testing device, and the resistance value associated data of the heating element can be transmitted to the control component.

[0140] The data related to the measured resistance of the heating element can refer to the ambient temperature at the point, heating time, and other related data that can reflect the measured resistance of the heating element.

[0141] Step 3: The control component calls the temperature conversion program and obtains the actual temperature related data of the heating element according to the internal environment temperature related data and the heating element measured resistance related data.

[0142] In some embodiments, the temperature conversion program may include a temperature-resistance relationship model, and the construction of the temperature-resistance relationship model includes the following steps:

[0143] Step A-1: ​​Start the heating device so that the actual temperature of the heating element reaches and is maintained at the first standard temperature.

[0144] Step A-2: Record the internal environment temperature correlation data and the heating element resistance correlation data at different heating times to form a first set of correspondence tables.

[0145] In some embodiments, the construction of the temperature-resistance relationship model further includes the following steps:

[0146] Step B-1: Start the heating device so that the actual temperature of the heating element reaches and is maintained at the second standard temperature.

[0147] Step B-2: Record the internal environment temperature correlation data and the heating element resistance correlation data at different heating times to form a second set of correspondence tables.

[0148] In some embodiments, the temperature-resistance model includes a first set of correspondence tables and a second set of correspondence tables.

[0149] Exemplarily, the heating device is started so that the actual temperature of the heating element reaches 350 degrees Celsius, and the internal environment temperature correlation data and the corresponding heating element measured resistance correlation data of the heating element at 350 degrees Celsius can be periodically recorded according to a recording cycle with a set time interval of 20 seconds to form Table 2.

[0150] Table 2: Correlation data of internal ambient temperature when the heating element is at 350 degrees Celsius and the corresponding heating element measured resistance value

[0151]

[0152]

[0153] Furthermore, the heating device is started so that the actual temperature of the heating element reaches 380 degrees Celsius, and the internal environment temperature correlation data and the corresponding heating element measured resistance correlation data of the heating element at 380 degrees Celsius can be periodically recorded according to a recording cycle with a set time interval of 20 seconds to form Table 3.

[0154] Table 3: Correlation data of internal ambient temperature when the heating element is at 380 degrees Celsius and the corresponding heating element measured resistance value

[0155]

[0156]

[0157] In some embodiments, when the temperature conversion program is called by the control component, the following steps are performed:

[0158] Step 3a-1: Obtain the measured resistance value of the heating element at the first standard temperature and the measured resistance value of the heating element at the second standard temperature from the first group of corresponding tables and the second group of corresponding tables respectively according to the internal environment temperature correlation data obtained by the control component.

[0159] Step 3a-2: Calculate the actual temperature associated data of the heating element according to the measured resistance value of the heating element at the first standard temperature, the measured resistance value of the heating element at the second standard temperature, and the measured resistance associated data of the heating element acquired by the control component.

[0160] It can be understood that based on the measured resistance of the heating element and the related data of the measured resistance of the heating element, the related data of the actual temperature of the heating element can be inferred, ignoring the influence of interfering resistances such as the circuit board resistance, solder point resistance, and heating element pin resistance during the heating process.

[0161] In some embodiments, the construction of the temperature-resistance relationship model further includes the following steps:

[0162] Step C: Perform data fitting according to the first standard temperature, the first set of corresponding tables, the second standard temperature and the second set of corresponding tables to determine the relationship of "internal environment temperature correlation data-heating element measured resistance correlation data-heating element actual temperature".

[0163] In some embodiments, when the temperature conversion program is called by the control component, the following steps are executed: Step 3b: The internal environment temperature associated data obtained by the control component and the heating element measured resistance associated data obtained by the control component are imported into the "internal environment temperature associated data-heating element measured resistance associated data-heating element actual temperature" relationship formula to deduce the heating element actual temperature associated data.

[0164] It should be noted that the specific implementation process of calculating the data associated with the actual temperature of the heating element based on the resistance value and the data associated with the resistance value is well known to those skilled in the art and will not be described in detail here.

[0165] In some embodiments, the heating temperature curve of the heating element can be adjusted and controlled by using the calculated data related to the actual temperature of the heating element.

[0166] The heating temperature curve of the heating element describes the temperature change trend of the heating element from the initial state to the stable working state. This curve is very important for understanding and controlling the working performance of the heating element.

[0167] The heating temperature curve of the heating element can be roughly divided into the following stages:

[0168] Initial stage: In this stage, the heating element just starts to heat up and the temperature rises rapidly. At this time, due to the large temperature difference between the heating element and the surrounding environment, the heat transfer rate is fast, so the temperature rises faster.

[0169] Acceleration stage: As the heating continues, the temperature of the heating element continues to rise, but the rate of increase gradually slows down. This is because as the temperature rises, the temperature difference between the heating element and the surrounding environment gradually decreases, and the rate of heat transfer also decreases accordingly.

[0170] Stable stage: When the heating element reaches a certain temperature, its heating speed will tend to be stable and the temperature curve will become relatively flat. At this time, the heat generated by the heating element and the heat dissipated reach a balance, and the temperature remains at a relatively stable level.

[0171] It is understandable that the specific heating temperature curve will be affected by many factors, including the material, shape, size, heating power, ambient temperature, heat dissipation conditions, etc. of the heating element. Therefore, the present application can adjust and control the heating temperature curve of the heating element through the actual temperature correlation data of the heating element to improve the best heating effect and stability.

[0172] Step 4: The control component calls the heating temperature timing control program and controls the electric energy transmitted to the heater by the power supply according to the actual temperature correlation data of the heating element.

[0173] It can be understood that by obtaining the ambient temperature correlation data within the reference point of the heating element, and based on the ambient temperature correlation data within the reference point of the heating element, the actual temperature correlation data of the heating element is obtained, thereby avoiding the influence of interference resistance on the heating element during the heating process and improving the control effect of the heating temperature of the heating element.

[0174] Based on the above-mentioned inventive concept, the present application also provides a heating smoking device, comprising: a heating chamber, a heating element, a power supply, a power supply chamber and a control component, the heating element is used to heat an aerosol-forming matrix contained in the heating chamber during operation to generate an aerosol, the resistance of the heating element changes with the temperature of the heating element, the power supply chamber is used to accommodate the power supply, the control component is used to control the electric energy transmitted by the power supply to the heater during operation, the control component includes a first memory including a temperature conversion program and a second memory including a heating temperature timing control program, the heating smoking device also includes: an internal environment temperature sensor element arranged at a reference point near the heating element in the heating smoking device, and the control component is used to execute the heating control method as described above.

[0175] In some embodiments, the internal environment temperature sensor element is disposed close to the pin solder joint of the heating element or close to the circuit element.

[0176] In some embodiments, the sensing element is a patch temperature sensor.

[0177] It can be understood that the SMD temperature sensor usually consists of three parts: temperature sensing element, signal conditioning circuit and output interface. Its core component is the temperature sensing element, which is responsible for sensing the change of ambient temperature. Common temperature sensing elements include thermistors (such as PTC and NTC) and thermistor capacitors. The working principle of these components is based on the thermal effect, that is, their resistance value changes with the change of temperature. For example, the resistance value of NTC thermistor decreases when the temperature increases, while the resistance value of PTC thermistor increases when the temperature increases.

[0178] Embodiment 6:

[0179] This embodiment provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps of the temperature calibration method of the heated smoking device described in Example 1 are implemented.

[0180] Embodiment 7:

[0181] This embodiment provides an electronic device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor. When the processor executes the program, the steps of the temperature calibration method of the heated smoking device described in Example 1 are implemented.

[0182] Embodiment 8:

[0183] This embodiment provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of the temperature calibration method of the heated smoking device described in Example 1 are implemented.

[0184] The above description is only a preferred embodiment of the present embodiment and is not intended to limit the present embodiment. For those skilled in the art, the present embodiment may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present embodiment shall be included in the protection scope of the present embodiment.

Claims

1. A method for calibrating the temperature of a heating smoking device, the heating smoking device comprising: A heating chamber, a heating element, a power supply, a power supply chamber and a control component, wherein the heating element is used to heat an aerosol-forming substrate contained in the heating chamber during operation to generate an aerosol, the resistance of the heating element changes with the temperature of the heating element, the power supply chamber is used to contain the power supply, and the control component is used to control the power supply to transmit electric energy to the heater during operation, characterized in that the temperature calibration method comprises: Step A: starting the heating smoking device to heat the heating element, and starting the timer at the same time; Step B: When the heating element is heated to the first standard temperature, the resistance of the heating element is measured and recorded as the first resistance, and the timer time is recorded as the first time; Step C: If the first time is less than or equal to the first calibration time threshold, continue to step D; if the first time is greater than the first calibration time threshold, terminate the heating of the heating element, wait for the heating element to cool to room temperature, and then re-execute step A and step B; if the first time is less than or equal to the first calibration time threshold, continue to step D; if the first time is still greater than the first calibration time threshold, execute step Z; Step D: When the heating element continues to be heated to the second standard temperature, the resistance of the heating element is measured and recorded as the second resistance, and the time of the timer is recorded as the second time; Step E: If the second time is less than or equal to the second calibration time threshold, continue to step F; if the second time is greater than the second calibration time threshold, terminate the heating of the heating element, wait for the heating element to cool to room temperature, and then re-execute step A, step B, step C and step D; if the second time is less than or equal to the second calibration time threshold, continue to step F; if the second time is still greater than the second calibration time threshold, execute step Z; Step F: terminating the heating of the heating element and recording the first resistance and the second resistance; Step Z: terminating the heating of the heating element and reporting an error.

2. A temperature calibration method for a heated smoking device according to claim 1, characterized in that: The control component includes a first memory for storing a temperature conversion program, and a second memory for storing a heating temperature timing control program.

3. A temperature calibration method for a heated smoking device according to claim 2, characterized in that: In step F, the first resistance and the second resistance are recorded in the first memory.

4. A temperature calibration method for a heated smoking device according to claim 3, characterized in that: The first calibration time threshold and the second calibration time threshold are 0-300s.

5. A temperature calibration method for a heated smoking device according to claim 3, characterized in that: The first calibration temperature and the second calibration temperature are 150° C.-420° C.; the first calibration temperature and the second calibration temperature are different.

6. A heated smoking device, characterized in that: It comprises a heating element, and the temperature of the heating element is calibrated by the temperature calibration method according to any one of claims 1 to 5.

7. A heating smoking device as claimed in claim 6, comprising: A heating chamber, a heating element, a power supply, a power supply chamber and a control component, wherein the heating element is used to heat an aerosol-forming matrix contained in the heating chamber during operation to generate an aerosol, and the resistance of the heating element changes with the temperature of the heating element. The power supply chamber is used to contain the power supply. The control component is used to control the electric energy transmitted by the power supply to the heater during operation. The control component includes a first memory for storing a temperature conversion program and a second memory for storing a heating temperature timing control program. Parameters of the temperature conversion program include the first standard temperature, the second standard temperature, the first resistance and the second resistance.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the temperature calibration method of the heated smoking device according to any one of claims 1 to 5 are implemented.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that: When the processor executes the program, the steps of the temperature calibration method of the heated smoking device according to any one of claims 1 to 5 are implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the temperature calibration method of the heated smoking article according to any one of claims 1 to 5 are implemented.

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