Good product detection method and system for heating element of electronic atomization device

Abstract

The invention relates to the technical field of electronic atomization, in particular to a good product detection method and system for a heating element of an electronic atomization device. According to the scheme, the heating element is controlled to heat for the preset duration at the preset voltage, the resistance values of the two different positions of the heating element are obtained at the same time after the preset time interval in the preset duration, and then the difference value between the resistance values of the two different positions obtained at each interval time point is calculated; after a plurality of difference values are calculated, a time-difference value curve is established according to the plurality of difference values, and finally, whether the current heating element is a good product or not is determined by judging the slope characteristic of the time-difference value curve in each time period. By the adoption of the scheme, whether the heating elements are good or not can be judged visually through the resistance value curve, a standard tube is not needed to serve as a reference, the yield of the heating elements can be detected in a very short time, and screening efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of electronic atomization technology, and in particular to a method and system for detecting good products of heating elements of electronic atomization devices. Background Art

[0002] During the production process, existing electronic atomization devices require testing of their heating elements to ensure that they perform well when they reach the user. Currently, testing of heating elements is done through power calibration, specifically by heating each heating element with the same power, typically for around 150 seconds. This long power calibration method not only results in low output power and slow heating, but also, when the temperature of the heating element stabilizes, the TCR values ​​of the heating elements with concentrated heat in certain areas are not much different from those of normal heating elements, making it impossible to determine whether the heating element is qualified. Summary of the Invention

[0003] The present invention provides a method and system for detecting good quality of heating elements of electronic atomization devices, which effectively solves the problem that existing detection methods cannot accurately and effectively detect whether the heating elements are good quality.

[0004] According to the first aspect, an embodiment provides a method for detecting good quality of a heating element of an electronic atomization device, comprising:

[0005] Controlling the heating element to heat at a preset voltage for a preset time;

[0006] Obtaining resistance values ​​of the heating element at two different positions at preset intervals;

[0007] Calculate the difference between the resistance values ​​of two different positions at each interval time point;

[0008] Establishing a time-difference curve based on the differences at multiple time intervals;

[0009] Determine whether the slope characteristics of each section of the time-difference curve are equal. If so, determine that the heating element is a good product; otherwise, determine that the heating element is a defective product; the slope characteristic refers to rising at a fixed slope value in the first stage and having a slope value of zero in the second stage.

[0010] In one achievable embodiment, the heating element includes an upper heating element and a lower heating element, and the upper heating element and the lower heating element are connected in series; and obtaining the resistance values ​​of the heating element at two different positions at a preset interval time includes:

[0011] The resistance value of the upper heating element and the resistance value of the lower heating element are obtained simultaneously at preset intervals.

[0012] In an achievable embodiment, the step of simultaneously obtaining the resistance value of the upper heating element and the resistance value of the lower heating element at preset intervals includes:

[0013] The resistance value of the upper heating element and the total resistance value of the heating element are obtained simultaneously at preset intervals;

[0014] The resistance of the lower heating element is calculated according to the total resistance of the heating elements and the resistance of the upper heating element.

[0015] In one feasible implementation, calculating the difference between the resistance values ​​at two different positions at each interval time point includes:

[0016] The difference between the resistance value of the upper heating element and the resistance value of the lower heating element at each interval time point is calculated.

[0017] In one feasible implementation, the calculation formula for obtaining the resistance of the heating element is:

[0018]

[0019] In the formula, R represents the resistance of the heating element, R 参 Indicates the reference resistance, V 满 Indicates the full-charge voltage of the heating element, V ADC Indicates the voltage of the heating element corresponding to the measurement time point.

[0020] In one achievable embodiment, when the heating element is determined to be good, both the upper heating element and the lower heating element are good.

[0021] When the heating element is determined to be defective, the upper heating element is defective and / or the lower heating element is defective.

[0022] According to the second aspect, an embodiment provides a good product detection system for a heating element of an electronic atomization device, comprising:

[0023] A heating module, used to control the heating element to heat at a preset voltage for a preset time;

[0024] an acquisition module, configured to acquire resistance values ​​of the heating element at two different positions at preset intervals;

[0025] A calculation module, used for calculating the difference between the resistance values ​​of two different positions at each interval time point;

[0026] A curve establishing module, configured to establish a time-difference curve based on the difference values ​​at multiple time intervals;

[0027] The judging module is used to judge whether the slope characteristics of each section of the time-difference curve are equal, and if so, determine that the heating element is a good product, otherwise determine that the heating element is a defective product.

[0028] In one achievable embodiment, the heating element includes an upper heating element and a lower heating element, and the upper heating element and the lower heating element are connected in series; the acquisition module acquires the resistance values ​​of the heating element at two different positions at a preset interval, including:

[0029] The resistance value of the upper heating element and the resistance value of the lower heating element are obtained simultaneously at preset intervals.

[0030] According to a third aspect, an embodiment provides a computer-readable storage medium, on which a computer program is stored. The computer program can be executed by a processor to implement the method described above.

[0031] According to a fourth aspect, an embodiment provides a computer program product, comprising a computer program and / or instructions, which implement the method described above when executed by a processor.

[0032] According to the above embodiment, a method / system for detecting good quality of a heating element of an electronic atomization device is provided. The heating element is controlled to heat at a preset voltage for a preset time period. Moreover, within the preset time period, the resistance values ​​of two different positions of the heating element are simultaneously obtained after each preset time interval. The difference between the resistance values ​​of the two different positions obtained at each interval time point is then calculated. After calculating a plurality of differences, a time-difference curve is established based on the plurality of differences. Finally, the slope characteristics of the time-difference curve in each time period are judged to determine whether the current heating element is good quality. By adopting the solution of the present application, the good quality or bad quality of the heating element can be intuitively judged by the resistance curve, and no standard tube is required as a reference. The good quality rate of the heating element can be detected in a very short time, which effectively improves the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a flow chart of a method for detecting good quality of a heating element of an electronic atomization device provided in this embodiment;

[0034] Figure 2 A schematic diagram of a circuit for measuring the resistance of a heating element provided in this embodiment;

[0035] Figure 3 A time-difference curve diagram of the heating element provided in this embodiment;

[0036] Figure 4 This is a structural block diagram of a good product detection system for heating elements of an electronic atomization device provided in this embodiment.

[0037] Reference numerals: 10, heating module; 20, acquisition module; 30, calculation module; 40, curve establishment module; 50, judgment module. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions, and for those skilled in the art, it is not necessary to describe these related operations in detail. They will fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0039] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0040] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0041] like Figure 1 As shown, this embodiment provides a method for detecting good quality of a heating element of an electronic atomization device, comprising the following steps:

[0042] Step 100: Controlling the heating element to heat at a preset voltage for a preset time period through the heating module;

[0043] Step 200: obtaining resistance values ​​of two different positions of the heating element at a preset interval through an obtaining module;

[0044] Step 300: Calculate the difference between the resistance values ​​of two different positions at each interval time point by a calculation module;

[0045] Step 400: Creating a time-difference curve based on the differences between multiple time intervals using a curve creation module;

[0046] Step 500: The determination module determines whether the slope characteristics of each time-difference curve are equal. If so, the heating element is determined to be good. Otherwise, the heating element is determined to be defective.

[0047] In actual application, the heating element in each electronic atomization device needs to be tested before leaving the factory, and only when it is tested as a good product can it enter the next link. The present application proposes a rapid detection method. Specifically, by applying a preset voltage to the heating element, it is heated for a preset time, and then, during the preset heating time, the resistance values ​​of the upper and lower heating elements are collected at the same time at the current moment. After the interval time, the resistance values ​​of the heating elements are collected again at the same time, and this cycle is repeated until the heating is completed. For example, the preset heating time is 3 seconds, and the resistance value is collected once every 0.1 seconds, and the resistance value collected once is the resistance value of two different positions of the heating element at the current moment. That is to say, within the 3-second heating time, the resistance value is collected 30 times in total, and the resistance values ​​of two positions of the heating element are collected at the same time each time. Since the resistance values ​​at two locations are collected each time, the difference between the two resistance values ​​is calculated each time, that is, 30 difference values ​​can be obtained. At this time, a time-difference curve is established based on each collection moment and the difference value corresponding to that moment. The slope characteristics of the difference curve are determined to be consistent within the preset heating time. If so, it indicates that the current heating element is good, and if not, it indicates that the current heating element is defective. The slope characteristic means that the slope value increases at a fixed slope value in the first stage and the slope value is zero in the second stage.

[0048] Because in actual samples, the resistance values ​​of the heating elements of good and defective products overlap when not heating, the resistance value of the heating element with uniform heating is related to the thickness of the printing. When heating, the heating element with uniform heating does not have the phenomenon of concentrated temperature zones. Therefore, in the heating and temperature rise stage (i.e., the first stage), the slope of the curve formed by the difference between the resistance values ​​at different positions is constant. However, the resistance value of defective products will have uneven heating circuits, resulting in concentrated temperature zones. Under the same voltage and time, the temperature will rise very high. Therefore, the slope characteristics of the difference can be used to determine whether the heating element is good, and heating elements with concentrated temperature zones can be eliminated. In addition, the solution of the present application only requires a very short time (e.g., 3 seconds) during detection, with high voltage and rapid temperature rise action, and the output resistance difference curve can be used to screen whether the heating element is uniform, without the need for a standard tube as a reference, effectively improving the efficiency of screening. In addition, after the 3-second heating time ends, when heating continues, the resistance value of the heating element will no longer change (i.e., the second stage), and the slope value is zero at this time.

[0049] In some embodiments, the heating element includes an upper heating element and a lower heating element, and the upper heating element and the lower heating element are connected in series; obtaining the resistance values ​​of two different positions of the heating element at a preset interval time includes: simultaneously obtaining the resistance values ​​of the upper heating element and the resistance values ​​of the lower heating element at a preset interval time.

[0050] Specifically, in actual application, the heating element includes an upper heating element and a lower heating element, and the upper heating element and the lower heating element are connected in series. The method for measuring the resistance of the heating element is as follows: Figure 2 , the upper heating element and the lower heating element are powered by an 8.4V power supply. In fact, the upper heating element and the lower heating element are connected (the segmentation is carried out by connecting the ground wire in the middle part of the heating element). The specific implementation method of series connection is to connect the upper heating element to the area (HEATER TOP) in the circuit that supplies power to the upper heating element, and the lower heating element is grounded (HEATER COM-), and the heating element ground wire is not connected to the circuit. In the solution of the present application, when detecting whether the heating element is a good product, heating is performed through full power output, so there is no need to adjust the PWM duty cycle to adjust the output power. Therefore, when obtaining the resistance value of the heating element, the resistance value of the upper heating element and the resistance value of the lower heating element are obtained simultaneously at each acquisition moment.

[0051] Furthermore, the method for obtaining the resistance value of the upper heating element and the resistance value of the lower heating element includes: obtaining the resistance value of the upper heating element and the total resistance value of the heating element at preset intervals; and calculating the resistance value of the lower heating element based on the total resistance value of the heating element and the resistance value of the upper heating element.

[0052] Specifically, such as Figure 2 In the circuit structure shown, the heating element is heated at a voltage of 8.4V for 3 seconds, and the resistance value R of the upper heating element can be read every 0.1S. 上 And the total resistance of the heating element R 总 (i.e. resistance of the upper heating element + resistance of the lower heating element). Since the upper heating element and the lower heating element are connected in series, and the resistance of the upper heating element and the total resistance are known, the resistance of the lower heating element R can be calculated. 下 :R 下 =R 总 -R 上 .

[0053] Among them, the resistance value R of the upper heating element 上 The calculation principle is as follows:

[0054]

[0055] Where R 上 is the resistance of the upper heating element; R 参Indicates the reference resistance, which is 5.1Ω; V 满 Indicates the full-charge voltage of the heating element, which is represented by 4096 (full-charge voltage code) in the control system; V ADC Indicates the heating element voltage corresponding to the measurement time point (0 to 4096 during acquisition).

[0056] For the total resistance of the heating element R 总 The calculation principle is the same as above, and will not be elaborated on in this embodiment.

[0057] When the heating element is an upper heating element and a lower heating element connected in series, the difference between the resistance values ​​of two different positions at each interval time point is calculated, including: calculating the difference between the resistance value of the upper heating element and the resistance value of the lower heating element at each interval time point.

[0058] Specifically, the resistance value R of the upper heating element at each moment can be obtained by the calculation in the above embodiment. 上 And the resistance value R of the lower heating element 下 When the difference between the upper heating element and the lower heating element at each moment is calculated, specifically: R 差 =|R 上 -R 下 |.

[0059] Furthermore, when the heating element is determined to be good, both the upper heating element and the lower heating element are good; when the heating element is determined to be defective, the upper heating element is defective and / or the lower heating element is defective.

[0060] During the preset heating time, for a good quality heating element, as the temperature rises, a total of 30 resistance points are connected into a straight line. When the temperature stabilizes, the difference between the upper and lower heating elements remains unchanged, and the slope is zero. Figure 3 In the time-difference curve shown, the slope characteristics of the good product difference in each stage are: K1 = K2 = K3... (first stage), and K = 0 (after the temperature stabilizes, i.e., second stage). In other words, the heating of the upper and lower heating elements of the good product heating element at different times is uniform, thus keeping the difference between the upper and lower heating elements unchanged.

[0061] For defective heating elements, since the upper and lower heating elements are heating circuits, their resistance will continue to increase during the heating process. Since the heating circuit material may be uneven, the temperature zone of the upper and / or lower heating elements will be concentrated during heating, causing the temperature to rise very high under the same voltage and time, resulting in different resistance values ​​of the upper or lower heating elements at different times.

[0062] refer to Figure 4, this embodiment provides a good product detection system for the heating element of an electronic atomization device, including a heating module 10, an acquisition module 20, a calculation module 30, a curve establishment module 40 and a judgment module 50. Among them, the heating module 10 is used to control the heating element to heat at a preset voltage for a preset time; the acquisition module 20 is used to obtain the resistance of two different positions of the heating element at a preset interval time; the calculation module 30 is used to calculate the difference between the resistance of two different positions at each interval time point; the curve establishment module 40 is used to establish a time-difference curve based on the difference of multiple interval time points; the judgment module 50 is used to judge whether the slope characteristics of each time-difference curve are equal. If so, the heating element is determined to be a good product, otherwise the heating element is determined to be a defective product. Among them, the slope characteristic refers to rising at a fixed slope value in the first stage and having a slope value of zero in the second stage.

[0063] In the quality inspection system for the heating element of the electronic atomization device of this embodiment, the heating module 10 controls the heating element to heat at a preset voltage for a preset time period, and within the preset time period, after each preset time interval, the resistance values ​​of two different positions of the heating element are simultaneously obtained by the acquisition module 20, and then the calculation module 30 calculates the difference between the resistance values ​​of the two different positions obtained at each interval time point. After calculating multiple differences, the curve establishment module 40 establishes a time-difference curve based on the multiple differences. Finally, the judgment module 50 judges the slope characteristics of the time-difference curve in each time period to determine whether the current heating element is a good product. By adopting the quality inspection system of the present application, the quality or non-quality of the heating element can be intuitively judged by the resistance curve, and no standard tube is required as a reference. The quality rate of the heating element can be detected in a very short time, which effectively improves the screening efficiency.

[0064] In addition, since the functions that can be achieved by the heating module 10, the acquisition module 20, the calculation module 30, the curve establishment module 40 and the judgment module 50 and the technical effects brought about have been explained in detail in the embodiment of the above-mentioned method for detecting good products of the heating element of the electronic atomization device, this embodiment will not be repeated in detail here.

[0065] In one feasible embodiment, the heating element includes an upper heating element and a lower heating element, and the upper heating element and the lower heating element are connected in series; the acquisition module 20 obtains the resistance values ​​of two different positions of the heating element at a preset interval time, including: simultaneously obtaining the resistance value of the upper heating element and the resistance value of the lower heating element at a preset interval time.

[0066] Specifically, in actual application, the heating element includes an upper heating element and a lower heating element, and the upper heating element and the lower heating element are connected in series. The method for measuring the resistance of the heating element is as follows: Figure 2, the upper heating element and the lower heating element are powered by an 8.4V power supply. In fact, the upper heating element and the lower heating element are connected (the segmentation is carried out by connecting the ground wire in the middle part of the heating element). The specific implementation method of series connection is to connect the upper heating element to the area (HEATER TOP) in the circuit that supplies power to the upper heating element, and the lower heating element is grounded (HEATER COM-), and the heating element ground wire is not connected to the circuit. In the solution of the present application, when detecting whether the heating element is a good product, heating is performed through full power output, so there is no need to adjust the PWM duty cycle to adjust the output power. Therefore, when obtaining the resistance value of the heating element, the resistance value of the upper heating element and the resistance value of the lower heating element are obtained simultaneously at each acquisition moment.

[0067] This embodiment provides a computer-readable storage medium having a computer program stored thereon, which can be executed by a processor to implement the method described above. Given that the above embodiment has already described in detail the method for detecting good quality of heating elements in electronic atomization devices, this embodiment will not elaborate on this in detail.

[0068] This embodiment provides a computer program product, including a computer program and / or instructions, which, when executed by a processor, implement the method described above. Given that the above embodiment has already detailed the method for detecting good quality of heating elements in electronic atomization devices, this embodiment will not elaborate on this in detail.

[0069] Those skilled in the art will appreciate that all or part of the functions of the various methods in the above embodiments can be implemented by hardware or by computer program. When all or part of the functions in the above embodiments are implemented by computer program, the program can be stored in a computer-readable storage medium, and the storage medium can include: read-only memory, random access memory, disk, optical disk, hard disk, etc., and the program is executed by a computer to implement the above functions. For example, the program is stored in the memory of the device, and when the program in the memory is executed by the processor, all or part of the above functions can be implemented. In addition, when all or part of the functions in the above embodiments are implemented by computer program, the program can also be stored in a storage medium such as a server, another computer, disk, optical disk, flash disk or mobile hard disk, and saved in the memory of the local device by downloading or copying, or the system of the local device is updated. When the program in the memory is executed by the processor, all or part of the functions in the above embodiments can be implemented.

[0070] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art can make several simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A method for detecting good quality of heating elements of electronic atomization devices, characterized in that: include: Controlling the heating element to heat at a preset voltage for a preset time; Obtaining resistance values ​​of the heating element at two different positions at preset intervals; Calculate the difference between the resistance values ​​of two different positions at each interval time point; establishing a time-difference curve based on the differences at multiple time intervals; It is determined whether the slope characteristics of each section of the time-difference curve are equal. If so, the heating element is determined to be a good product; otherwise, the heating element is determined to be a defective product.

2. The method for detecting good products according to claim 1, wherein: The heating element includes an upper heating element and a lower heating element, and the upper heating element and the lower heating element are connected in series; and obtaining the resistance values ​​of two different positions of the heating element at a preset interval time includes: The resistance value of the upper heating element and the resistance value of the lower heating element are obtained simultaneously at preset intervals.

3. The method for detecting good products according to claim 2, wherein: The step of simultaneously obtaining the resistance value of the upper heating element and the resistance value of the lower heating element at a preset time interval includes: The resistance value of the upper heating element and the total resistance value of the heating element are obtained simultaneously at preset intervals; The resistance of the lower heating element is calculated according to the total resistance of the heating elements and the resistance of the upper heating element.

4. The method for detecting good products according to claim 3, wherein: Calculating the difference between the resistance values ​​of two different positions at each interval time point includes: The difference between the resistance value of the upper heating element and the resistance value of the lower heating element at each interval time point is calculated.

5. The method for detecting good products according to claim 3, wherein: The calculation formula for obtaining the resistance of the heating element is: In the formula, R represents the resistance of the heating element, R 参 Indicates the reference resistance, V 满 Indicates the full-charge voltage of the heating element, V ADC Indicates the voltage of the heating element corresponding to the measurement time point.

6. The method for detecting good products according to claim 5, wherein: When it is determined that the heating element is a good product, both the upper heating element and the lower heating element are good products; When the heating element is determined to be defective, the upper heating element is defective and / or the lower heating element is defective.

7. A good product detection system for heating elements of electronic atomization devices, characterized in that: include: A heating module, used to control the heating element to heat at a preset voltage for a preset time; an acquisition module, configured to acquire resistance values ​​of the heating element at two different positions at preset intervals; A calculation module, used for calculating the difference between the resistance values ​​of two different positions at each interval time point; A curve establishing module, configured to establish a time-difference curve based on the difference values ​​at multiple time intervals; The judging module is used to judge whether the slope characteristics of each section of the time-difference curve are equal, and if so, determine that the heating element is a good product, otherwise determine that the heating element is a defective product.

8. The good product inspection system according to claim 7, wherein: The heating element includes an upper heating element and a lower heating element, and the upper heating element and the lower heating element are connected in series; the acquisition module acquires the resistance values ​​of two different positions of the heating element at a preset interval time, including: The resistance value of the upper heating element and the resistance value of the lower heating element are obtained simultaneously at preset intervals.

9. A computer-readable storage medium, characterized in that A computer program is stored on the medium, and the computer program can be executed by a processor to implement the method according to any one of claims 1 to 6.

10. A computer program product comprising a computer program and / or instructions, characterized in that When the computer program and / or instructions are executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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