Humidifier water deficiency detection method, apparatus, system, and readable storage medium

Abstract

The application relates to a humidifier water shortage detection method, device and system and a readable storage medium. The method comprises the following steps: obtaining heating disc electric heating energy based on a first heating power; obtaining a first temperature difference data set based on a first preset sampling frequency; obtaining a first temperature difference cumulative value according to the first temperature difference data set; and obtaining a water shortage detection result in response to the ratio of the first temperature difference cumulative value to the heating disc electric heating energy meeting a threshold condition. The application can detect the water shortage condition of the humidifier based on the temperature of the humidifier heating disc and the gas temperature at the humidifier air inlet, and can effectively improve the accuracy and stability of the humidifier water shortage detection.

Description

Technical Field

[0001] The present application relates to the field of humidifier detection technology, and in particular to a humidifier water shortage detection method, device, system and readable storage medium. Background Art

[0002] When using a medical humidification device, water is added to the humidifier. Heating the humidifier causes the stored water to evaporate into vapor, increasing the moisture content of the transmitted airflow and achieving the desired humidified airflow. If the humidifier is not replenished with water or monitored for water shortages after prolonged operation, the stored water will gradually evaporate, damaging the device and compromising its therapeutic effectiveness. Summary of the Invention

[0003] Based on this, it is necessary to provide a humidifier water shortage detection method, device, system and readable storage medium that can accurately determine the water shortage situation of the humidifier in response to the above technical problems.

[0004] In a first aspect, in one embodiment, the present application provides a method for detecting water shortage in a humidifier, the method comprising:

[0005] Based on the first heating power, the electric thermal energy of the heating disk is obtained; the electric thermal energy of the heating disk represents the electric thermal energy generated by the humidifier heating disk when heated at the first heating power within a first preset time period;

[0006] Based on a first preset sampling frequency, a first temperature difference data set is obtained; the first temperature difference data set includes a first temperature difference obtained by sampling at the first preset sampling frequency within a first preset time period; the first temperature difference is the difference between the temperature of the humidifier heating disk and the gas temperature at the humidifier air inlet at the same sampling moment;

[0007] Obtaining a first temperature difference cumulative value according to the first temperature difference data set; the first temperature difference cumulative value is obtained by accumulating all first temperature differences in the first temperature difference data set;

[0008] In response to a ratio of the first temperature difference accumulated value to the electric heating energy of the heating disk meeting a threshold condition, a water shortage detection result is obtained.

[0009] In one embodiment, obtaining a water shortage detection result includes:

[0010] A second temperature difference data set is obtained based on the second heating power and the second sampling frequency; the second temperature difference data set includes a second temperature difference obtained by sampling at the second sampling frequency within a second preset time period; the second temperature difference is a difference between the temperature of the humidifier heating disk at the current sampling moment and the temperature of the humidifier heating disk before a third preset time period;

[0011] Based on the second temperature difference data set, obtaining a maximum temperature difference, a minimum temperature difference, and an average temperature difference of the second temperature difference data set;

[0012] In response to the difference between the maximum temperature difference and the minimum temperature difference being smaller than the average temperature difference of the preset judgment ratio, a water shortage detection result is obtained.

[0013] In one embodiment, obtaining the electric heating energy of the heating plate based on the first heating power includes:

[0014] A first heating power data set is obtained based on a third preset sampling frequency; the first heating power data set includes a first heating power obtained by sampling at the third preset sampling frequency within a first preset time period; the first heating power is calculated based on a heating voltage, a heating current, and a heating duty cycle of the humidifier heating disk at the same sampling time;

[0015] The electric heating energy of the heating disk is obtained according to the first heating power data set; the electric heating energy of the heating disk is obtained by accumulating all the first heating powers in the first heating power data set.

[0016] In one embodiment, obtaining the electric heating energy of the heating plate based on the first heating power includes:

[0017] A first heating power data set is obtained based on a third preset sampling frequency; the first heating power data set includes a first heating power obtained by sampling at the third preset sampling frequency within a first preset time period; the first heating power is calculated based on a heating voltage, a heating current, and a heating duty cycle of the humidifier heating disk at the same sampling time;

[0018] The electric heating energy of the heating disk is obtained according to the first heating power data set; the electric heating energy of the heating disk is obtained by accumulating all the first heating powers in the first heating power data set.

[0019] In one embodiment, the second heating power is a preset ratio of the first heating power.

[0020] In one embodiment, the preset judgment ratio includes 20%.

[0021] In a second aspect, in one embodiment, the present application provides a humidifier water shortage detection device, the device comprising:

[0022] an electric thermal energy acquisition module, configured to obtain electric thermal energy of the heating disk based on the first heating power; the electric thermal energy of the heating disk represents the electric thermal energy generated by the humidifier heating disk when heated at the first heating power within a first preset time period;

[0023] a first temperature difference data set acquisition module, configured to obtain a first temperature difference data set based on a first preset sampling frequency; the first temperature difference data set comprising a first temperature difference obtained by sampling at the first preset sampling frequency within a first preset time period; the first temperature difference being the difference between the temperature of the humidifier heating disk and the gas temperature at the humidifier air inlet at the same sampling moment;

[0024] A temperature difference cumulative value acquisition module is configured to obtain a first temperature difference cumulative value based on the first temperature difference data set; the first temperature difference cumulative value is obtained by accumulating all first temperature differences in the first temperature difference data set;

[0025] The water shortage judgment module is used to obtain a water shortage detection result in response to the ratio of the first temperature difference accumulated value to the electric heating energy of the heating disk meeting a threshold condition.

[0026] In a third aspect, in one embodiment, the present application provides a humidifier water shortage detection system, wherein the humidifier includes a humidifier heating plate, and the system includes:

[0027] A temperature sensing module is used to obtain the temperature of the humidifier heating plate and the gas temperature at the humidifier air inlet;

[0028] A controller connected to the temperature sensing module and the humidifier heating disk, the controller is used to implement the steps of the method of any embodiment of the first aspect.

[0029] In a fourth aspect, in one embodiment, the present application provides a humidifier, which includes the humidifier water shortage detection system of the third aspect.

[0030] In a fifth aspect, in one embodiment, the present application provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of the method of any one of the embodiments of the first aspect when the computer program is executed by a processor.

[0031] In the sixth aspect, in one embodiment, a computer program product includes a computer program, and when the computer program is executed by a processor, the steps of the method of any embodiment of the first aspect are implemented.

[0032] The above-described humidifier water shortage detection method, device, system, and readable storage medium can obtain the heating disk's electrical heat energy based on a first heating power; obtain a first temperature difference data set based on a first preset sampling frequency; and obtain a first temperature difference cumulative value based on the first temperature difference data set. A humidifier water shortage can be determined based on whether the ratio of the first temperature difference cumulative value to the heating disk's electrical heat energy satisfies a threshold condition. This application can detect humidifier water shortage based on the temperature of the humidifier heating disk and the gas temperature at the humidifier's air inlet, effectively improving the accuracy and stability of humidifier water shortage detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 Schematic diagram of an application scenario of a method for detecting water shortage in a humidifier according to an embodiment;

[0035] Figure 2 1 is a flow chart of a method for detecting water shortage in a humidifier according to an embodiment;

[0036] Figure 3 Schematic diagram of a process for obtaining a water shortage detection result in one embodiment;

[0037] Figure 4 A schematic diagram of a process for obtaining electrical heating energy for a heating plate in one embodiment;

[0038] Figure 5 is the ratio of different running times in one embodiment Schematic diagram of the change curve;

[0039] Figure 6 is a schematic diagram of a second temperature difference data distribution curve in one embodiment;

[0040] Figure 7 This is a structural block diagram of a humidifier water shortage detection device in one embodiment;

[0041] Figure 8 FIG. 4 is a structural block diagram of a humidifier water shortage detection system in one embodiment. DETAILED DESCRIPTION

[0042] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0044] It will be understood that the terms "first," "second," etc. used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element.

[0045] Spatially relative terms such as "under," "beneath," "beneath," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that in addition to the orientations shown in the figures, spatially relative terms also include different orientations of the device in use and operation. For example, if the device in the drawings is turned over, the element or feature described as "under" or "beneath" or "beneath" the other elements will be oriented as "above" the other elements or features. Thus, the exemplary terms "under" and "under" can include both upper and lower orientations. In addition, the device can also include alternative orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0046] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intervening element. In addition, the "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc., if there is transmission of electrical signals or data between the connected objects.

[0047] As used herein, the singular forms "a," "an," and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include," "comprising," "having," and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Furthermore, the term "and / or" as used in this specification includes any and all combinations of the relevant listed items.

[0048] In conventional medical humidification output devices, water is added to Figure 1Inside the humidifier shown, a heating disk heats a water storage container, evaporating the water in the container into water vapor. This increases the water vapor content of the input airflow, achieving a humidified airflow output effect. However, after prolonged operation of the humidification output device, all the water in the humidifier's water storage container evaporates. To monitor the water level within the humidifier, current technology relies on infrared sensors to determine whether the water level is too low. However, the accuracy of current infrared detection methods is affected by external lighting conditions and the material of the humidifier. This can lead to misjudgments of whether the humidifier is lacking water in different environments, affecting the accuracy and stability of water shortage detection, affecting the normal operation of the medical humidification output device, and potentially negatively impacting the patient's health, posing a significant safety risk. Therefore, there is an urgent need to improve the accuracy and stability of humidifier water shortage detection to ensure the stable operation of the medical humidification output device and patient safety.

[0049] Based on the above reasons, the present application provides a humidifier water shortage detection method, device, system and readable storage medium that can accurately determine the water shortage situation of the humidifier.

[0050] In one embodiment, Figure 2 As shown, the present application provides a humidifier water shortage detection method, which can be applied to Figure 1 In a humidifier as shown, the method includes:

[0051] Step S202 : obtaining the electric thermal energy of the heating disk based on the first heating power; the electric thermal energy of the heating disk represents the electric thermal energy generated by the humidifier heating disk when heating at the first heating power within a first preset time period.

[0052] The first heating power can be calculated based on the heating voltage and heating current input to the humidifier heating disk, as well as the heating duty cycle. The heating disk electrical heat energy generated by the humidifier heating disk during the first preset time period can be obtained based on the heating power and the heating time during the first preset time period.

[0053] Specifically, the electric heating energy of the heating disk generated by the humidifier heating disk within the first preset time period may be calculated based on the first heating power of the humidifier heating disk.

[0054] Step S204: obtaining a first temperature difference data set based on a first preset sampling frequency; the first temperature difference data set includes a first temperature difference obtained by sampling at the first preset sampling frequency within a first preset time period; the first temperature difference is the difference between the temperature of the humidifier heating disk and the gas temperature at the humidifier air inlet at the same sampling moment.

[0055] The first preset sampling frequency may be the frequency at which the temperature sensor module collects the temperature of the humidifier heating disk and the gas temperature at the humidifier air inlet. It is understood that the air inlet temperature can be approximately considered to be the ambient temperature. By performing a differential calculation between the temperature of the humidifier heating disk and the gas temperature at the humidifier air inlet and only calculating the temperature rise process, the influence of the ambient temperature can be reduced. For example, the calculation formula for obtaining the above-mentioned first temperature difference is as follows:

[0056] (Formula 1)

[0057] in, is the first temperature difference, is the temperature of the humidifier heating plate, is the gas temperature at the humidifier inlet.

[0058] Optionally, the first preset sampling frequency may be to collect the temperature of the humidifier heating disk and the gas temperature at the humidifier air inlet once every second, and the first preset time period may be 5 minutes. It is understood that the greater the first preset sampling frequency is set, the more temperature data samples that can be sampled and obtained within the same preset time period, and the first temperature difference data set can obtain more temperature difference data. It should be understood that the setting method of the first preset sampling frequency and the first preset time period is not limited to the implementation method mentioned in the above embodiment. Obviously, the first temperature difference data set required by this embodiment can also be obtained by using the first preset sampling frequency and the first preset time period of other settings. This application does not specifically limit the first preset sampling frequency and the first preset time period.

[0059] Specifically, according to the first preset sampling frequency, the temperature of the humidifier heating disk and the gas temperature at the air inlet of the humidifier at the same sampling moment are collected and difference processing is performed, so as to obtain a first temperature difference data set.

[0060] Step S206 , obtaining a first temperature difference cumulative value according to the first temperature difference data set; the first temperature difference cumulative value is obtained by accumulating all first temperature differences in the first temperature difference data set.

[0061] The first temperature difference data set includes first temperature differences obtained by sampling at a first preset sampling frequency, and a first temperature difference cumulative value can be obtained by accumulating all first temperature differences obtained by sampling in the first temperature difference data set.

[0062] Specifically, based on the first temperature difference data set obtained by sampling, all first temperature differences in the first temperature difference data set are accumulated to obtain a first temperature difference accumulated value.

[0063] Step S208 : In response to the ratio of the first temperature difference accumulated value to the electric heating energy of the heating disk meeting a threshold condition, a water shortage detection result is obtained.

[0064] Among them, it can be understood that during the heating process, when there is sufficient water stored in the humidifier water storage container, when the humidifier heating disk is heated at the first heating power, most of the heat energy generated by the heating disk will be dissipated through the water in the humidifier, so that the temperature of the humidifier heating disk is relatively low; when the humidifier is short of water, the heat energy generated by the heating disk and dissipated through the water storage of the humidifier becomes less, and the temperature of the heating disk will rise, so that the ratio of the accumulated value of the first temperature difference to the electric heating energy of the heating disk will increase significantly.

[0065] Specifically, based on the obtained first temperature difference cumulative value and the heating plate electric heat energy, a ratio of the first temperature difference cumulative value to the heating plate electric heat energy can be calculated. For example, when the ratio is greater than a preset threshold condition, a water shortage detection result can be obtained.

[0066] The above-mentioned humidifier water shortage detection method can obtain a first temperature difference data set by sampling within a first preset time period based on a first preset sampling frequency, and can obtain the electric heating energy of the heating disk within the first preset time period based on the first heating power; based on the first temperature difference data set, a first temperature difference cumulative value can be calculated; and based on whether the ratio of the first temperature difference cumulative value to the electric heating energy of the heating disk meets the threshold condition, a water shortage detection result can be obtained. The present application can detect the water shortage of the humidifier based on the sampling data of the temperature of the humidifier heating disk and the gas temperature at the humidifier air inlet, avoiding the use of infrared sensors in traditional technologies, reducing the influence of external lighting conditions and humidifier materials on water shortage detection, effectively improving the accuracy and stability of humidifier water shortage detection, and ensuring the reliable operation of the medical humidification output device. In addition, since the use of infrared sensors is reduced, the production and operation and maintenance costs of the equipment are also reduced.

[0067] In one embodiment, Figure 3 As shown, the water shortage detection results are obtained, including:

[0068] Step S302: obtaining a second temperature difference data set based on the second heating power and the second sampling frequency; the second temperature difference data set includes a second temperature difference obtained by sampling at the second sampling frequency within a second preset time period; the second temperature difference is the difference between the temperature of the humidifier heating disk at the current sampling moment and the temperature of the humidifier heating disk before the third preset time period.

[0069] The second heating power may be a heating power reset to the humidifier heating disk when the ratio of the first temperature difference accumulated value to the electric heating energy of the heating disk meets a threshold condition.

[0070] For example, the second preset time period can be 50 seconds, the second sampling frequency can be such that the humidifier heating disk temperature is collected once every second, and the third preset time period can be 30 seconds. For example, one second temperature difference data point in the second temperature difference data set can be obtained by performing a difference calculation between the humidifier heating disk temperature at the current sampling moment and the humidifier heating disk temperature 30 seconds prior. It is understood that the entire humidifier heating disk temperature sampling time (also known as the heating time) needs to include the second preset time period and the third preset time period, totaling 80 seconds (50 seconds + 30 seconds). It should be understood that the configuration of the second preset time period, the second sampling frequency, and the third preset time period is not limited to the implementation described in the above embodiment. Other configurations of the second preset time period, the second sampling frequency, and the third preset time period can clearly also produce the second temperature difference data set required by this embodiment. This application does not specifically limit the second preset time period, the second sampling frequency, and the third preset time period.

[0071] Specifically, when the humidifier heating disk is heated at a second heating power, a second temperature difference between the temperature of the humidifier heating disk at the current moment and the temperature of the humidifier heating disk before the third preset time period can be sampled and obtained, and a second temperature difference data set within the second preset time period can be obtained based on the obtained second temperature difference.

[0072] Step S304 : obtaining a maximum temperature difference, a minimum temperature difference, and an average temperature difference of the second temperature difference data set based on the second temperature difference data set.

[0073] The second temperature difference data set includes second temperature difference data sampled at the second sampling frequency within the second preset time period. The maximum temperature difference may be the largest second temperature difference data in the second temperature difference data set, the minimum temperature difference may be the smallest second temperature difference data in the second temperature difference data set, and the average temperature difference may be the average of all second temperature difference data in the second temperature difference data set.

[0074] Specifically, according to the second temperature difference data set obtained within the second preset time period, the maximum temperature difference, the minimum temperature difference and the average temperature difference in the second temperature difference data set can be obtained.

[0075] Step S306 , in response to the difference between the maximum temperature difference and the minimum temperature difference being smaller than the average temperature difference of the preset judgment ratio, a water shortage detection result is obtained.

[0076] It can be understood that when the humidifier heating disk is heated at a fixed power with the second heating power, when the humidifier is in a water-deficient state, the temperature change of the humidifier heating disk within a fixed time is basically stable; when the humidifier is in a water-containing state, due to the relatively large specific heat capacity of water, the temperature change of the humidifier heating disk will be relatively fast at the beginning of heating, and the above temperature change will become smaller and smaller as the heating process proceeds, thereby distinguishing whether there is water in the humidifier water storage container.

[0077] Specifically, based on the above-mentioned second temperature difference data set, the difference between the maximum temperature difference and the minimum temperature difference in the second temperature difference data set can be obtained; when the difference between the maximum temperature difference and the minimum temperature difference in the second temperature difference data set is less than the average temperature difference of the preset judgment ratio, a water shortage detection result that the humidifier is in a water shortage state can be obtained.

[0078] In one embodiment, Figure 4 As shown, based on the first heating power, obtaining the electric heating energy of the heating plate includes:

[0079] Step S402: obtaining a first heating power data set based on a third preset sampling frequency; the first heating power data set includes a first heating power obtained by sampling at the third preset sampling frequency within a first preset time period; the first heating power is calculated based on the heating voltage, heating current, and heating duty cycle of the humidifier heating disk at the same sampling time;

[0080] For example, the third preset sampling frequency may include sampling the heating voltage and heating current of the humidifier heating disk once per second. The first heating power at the same sampling moment can be calculated by the following formula (2):

[0081] (Formula 2)

[0082] in, is the first heating power, is the heating voltage of the humidifier heating disk at the current sampling moment, The heating current of the humidifier heating disk at the current sampling moment, The heating duty cycle of the humidifier heating disk.

[0083] Specifically, the heating voltage and heating current of the humidifier heating disk are sampled in the above-mentioned first preset time period at a third preset sampling frequency. Combined with the heating duty cycle of the humidifier heating disk, the first heating power at the same sampling moment can be obtained; based on the first heating power data obtained by sampling in the first preset time period, the first heating power data set can be obtained.

[0084] Step S404 , obtaining the electric heating energy of the heating disk according to the first heating power data set; the electric heating energy of the heating disk is obtained by accumulating all the first heating powers in the first heating power data set.

[0085] Specifically, based on the first heating power data set obtained in the first preset time period, all the first heating powers in the first heating power data set are accumulated to obtain the heating disk electric heat energy generated by the humidifier heating disk in the first preset time period.

[0086] In one exemplary embodiment, the second heating power is a preset ratio of the first heating power.

[0087] Among them, illustratively, the above-mentioned preset ratio is less than 100%, that is, the second heating power is less than the first heating power. It can be understood that the second heating power is less than the first heating power so that the humidifier heating disk can continue to heat (heat up) during the water shortage detection process to avoid the temperature of the humidifier heating disk from quickly reaching the temperature peak. Preferably, the second heating power can include 80% of the maximum first heating power data in the above-mentioned first heating power data set, that is, the above-mentioned preset ratio is 80%. It should be understood that the setting method of the above-mentioned second heating power is not limited to the implementation method mentioned in the above-mentioned embodiment. As long as it can prevent the humidifier heating disk from heating up too quickly, the present application does not specifically limit the setting method of the second heating power.

[0088] Specifically, when the humidifier heating disk is heated at a second heating power, a second temperature difference data set may be sampled and obtained, wherein the second heating power may include a preset proportion of the first heating power.

[0089] In one exemplary embodiment, the preset judgment ratio includes 20%.

[0090] Specifically, based on the obtained second temperature difference data set, the difference between the maximum temperature difference and the minimum temperature difference in the second temperature difference data set can be obtained; when the difference between the maximum temperature difference and the minimum temperature difference in the second temperature difference data set is less than 20% of the average temperature difference, a water shortage detection result indicating that the humidifier is in a water shortage state can be obtained.

[0091] In order to make the purpose, technical solutions and advantages of this application more clear, this application is further described in detail by taking an exemplary humidifier water shortage detection process as an example. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0092] For example, the first preset time period can be preset to 5 minutes. It will be appreciated that within the first preset time period of 5 minutes, the first heating power P1 of the humidifier heating disk can be calculated based on the heating voltage V and heating current I of the humidifier heating disk sampled every second, combined with the heating duty cycle Tduty of the humidifier heating disk. Based on the first heating power P1 sampled every second, by accumulating the first heating power every second over 5 minutes, the heating disk electrical heat energy Psum generated by the humidifier heating disk after 5 minutes of heating can be calculated.

[0093] In addition, within the first preset time period of 5 minutes, based on the temperature Tplate of the humidifier heating plate and the gas temperature Tin at the humidifier air inlet obtained by sampling every second, the first temperature difference between the temperature Tplate of the humidifier heating plate and the gas temperature Tin at the humidifier air inlet at the same sampling moment can also be calculated. All first temperature differences obtained by sampling within the first preset time period Perform accumulation processing to obtain the first temperature difference cumulative value sum.

[0094] Based on the above obtained heating plate electric heating energy Psum and the first temperature difference cumulative value sum, you can calculate the ratio of the two , the calculation process is as follows:

[0095] (Formula 3)

[0096] Based on the ratio obtained , when the ratio When the preset threshold is exceeded, it can be preliminarily determined that the humidifier is short of water. Figure 5 The ratio of different humidifier operation time The change curve of Figure 5 As shown in the figure, the humidifier was short of water after 8000 seconds, and the ratio increased significantly. When the preset threshold is exceeded, further water shortage detection may be performed as follows.

[0097] The heating power of the humidifier heating disk is set to 80% of the maximum first heating power collected and obtained during the first preset time period as the second heating power P2 for heating the humidifier heating disk. For example, the humidifier heating disk is heated continuously at the second heating power P2 for 80 seconds, and the temperature of the humidifier heating disk is sampled every second during the 80-second heating time. The second preset time period can be 50 seconds, and the third preset time period can be 30 seconds. That is, during the 80-second heating time, after the humidifier heating disk is heated for 30 seconds, a second temperature difference is sampled and calculated during the remaining 50 seconds. The second temperature difference is obtained by performing a difference process between the temperature of the humidifier heating disk at the current sampling moment and the temperature of the humidifier heating disk 30 seconds ago.

[0098] In one specific embodiment, the second temperature difference data distribution obtained by sampling every second within the second preset time period of 50 seconds can be as follows: Figure 6 As shown, Figure 6 The upper curve is the distribution of the second temperature difference data collected when the humidifier is short of water. Figure 6 The lower curve is the distribution of the second temperature difference data collected when the humidifier is filled with water. Based on the second temperature difference data sampled every second during the second preset time period, the maximum temperature difference, the minimum temperature difference, and the average temperature difference of all the second temperature difference data can be obtained.

[0099] At the end of the 80-second heating period, the difference between the maximum and minimum temperature differences is calculated and compared with the average temperature difference. For example, if the difference between the maximum and minimum temperature differences is less than 20% of the average temperature difference, the humidifier is determined to be in a water shortage state. Furthermore, the water shortage detection result can be sent to the client display interface for a corresponding interface prompt.

[0100] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0101] Based on the same inventive concept, embodiments of the present application further provide a humidifier water shortage detection device for implementing the aforementioned humidifier water shortage detection method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more sample addition device embodiments provided below can be found in the above-described limitations of the sample addition method and are not further elaborated here.

[0102] In one embodiment, Figure 7 As shown, the present application provides a humidifier water shortage detection device 700, which includes:

[0103] The electric thermal energy acquisition module 701 is configured to obtain electric thermal energy of the heating disk based on the first heating power; the electric thermal energy of the heating disk represents the electric thermal energy generated by the humidifier heating disk when heated at the first heating power within a first preset time period;

[0104] A first temperature difference data set acquisition module 703 is configured to obtain a first temperature difference data set based on a first preset sampling frequency; the first temperature difference data set includes a first temperature difference obtained by sampling at the first preset sampling frequency within a first preset time period; the first temperature difference is the difference between the temperature of the humidifier heating disk and the gas temperature at the humidifier air inlet at the same sampling time;

[0105] The temperature difference cumulative value acquisition module 705 is configured to obtain a first temperature difference cumulative value based on the first temperature difference data set; the first temperature difference cumulative value is obtained by accumulating all first temperature differences in the first temperature difference data set;

[0106] The water shortage judgment module 707 is configured to obtain a water shortage detection result in response to a ratio of the first temperature difference accumulated value to the electric heating energy of the heating disk meeting a threshold condition.

[0107] In one embodiment, the water shortage determination module 707 further includes:

[0108] a second temperature difference data set acquisition module, configured to obtain a second temperature difference data set based on a second heating power and a second sampling frequency; the second temperature difference data set comprising a second temperature difference obtained by sampling at the second sampling frequency within a second preset time period; the second temperature difference being the difference between the temperature of the humidifier heating disk at the current sampling moment and the temperature of the humidifier heating disk before a third preset time period;

[0109] A second temperature difference data characteristic value acquisition module is used to obtain the maximum temperature difference, the minimum temperature difference and the average temperature difference of the second temperature difference data set based on the second temperature difference data set;

[0110] The water shortage detection result acquisition module is used to obtain a water shortage detection result in response to the difference between the maximum temperature difference and the minimum temperature difference being less than an average temperature difference of a preset judgment ratio.

[0111] In one embodiment, the electrothermal energy acquisition module 701 further includes:

[0112] a first heating power data set acquisition module, configured to obtain a first heating power data set based on a third preset sampling frequency; the first heating power data set includes a first heating power obtained by sampling at the third preset sampling frequency within a first preset time period; the first heating power is calculated based on the heating voltage, heating current, and heating duty cycle of the humidifier heating disk at the same sampling time;

[0113] The heating disk electric heating energy acquisition module 701 is used to obtain the heating disk electric heating energy according to the first heating power data set; the heating disk electric heating energy is obtained by accumulating all the first heating powers in the first heating power data set.

[0114] In one embodiment, the second heating power includes a preset proportion of the first heating power.

[0115] In one embodiment, the preset judgment ratio includes 20%.

[0116] Each module in the aforementioned humidifier water shortage detection device may be implemented in whole or in part through software, hardware, or a combination thereof. Each module may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a memory in the computer device in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0117] In one embodiment, Figure 8 As shown, the present application provides a humidifier water shortage detection system 60, the humidifier includes a humidifier heating plate 80, and the system 60 includes:

[0118] The temperature sensing module 601 is used to obtain the temperature of the humidifier heating plate 80 and the gas temperature at the humidifier air inlet 70;

[0119] The controller 602 is connected to the temperature sensing module 601 and the humidifier heating disk 80, and is used to implement the steps of the method described in any of the above embodiments.

[0120] In one embodiment, the present application provides a humidifier, which includes the humidifier water shortage detection system described in the above embodiment.

[0121] In one embodiment, the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the method described in any one of the above embodiments are implemented.

[0122] In one embodiment, a computer program product includes a computer program. When the computer program is executed by a processor, the steps of the method described in any one of the above embodiments are implemented.

[0123] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), quantum computing-based data processing logic devices, artificial intelligence (AI) processors, and the like.

[0124] Throughout this specification, references to terms such as "some embodiments," "other embodiments," and "desired embodiments" indicate that a particular feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present application. The schematic descriptions of these terms throughout this specification do not necessarily refer to the same embodiment or example.

[0125] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0126] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A method for detecting water shortage in a humidifier, characterized in that: The method comprises: Based on the first heating power, the electric thermal energy of the heating disk is obtained; the electric thermal energy of the heating disk represents the electric thermal energy generated by the humidifier heating disk when heated at the first heating power within a first preset time period; A first temperature difference data set is obtained based on a first preset sampling frequency; the first temperature difference data set includes a first temperature difference obtained by sampling at the first preset sampling frequency within the first preset time period; the first temperature difference is the difference between the temperature of the humidifier heating disk and the gas temperature at the humidifier air inlet at the same sampling moment; Obtaining a first temperature difference cumulative value according to the first temperature difference data set; the first temperature difference cumulative value is obtained by accumulating all the first temperature differences in the first temperature difference data set; In response to a ratio of the first temperature difference accumulated value to the electric heating energy of the heating disk meeting a threshold condition, obtaining a water shortage detection result; The obtaining of the water shortage detection result comprises: A second temperature difference data set is obtained based on the second heating power and the second sampling frequency; the second temperature difference data set includes a second temperature difference obtained by sampling at the second sampling frequency within a second preset time period; the second temperature difference is a difference between the temperature of the humidifier heating disk at the current sampling moment and the temperature of the humidifier heating disk before a third preset time period; Based on the second temperature difference data set, obtaining a maximum temperature difference, a minimum temperature difference, and an average temperature difference of the second temperature difference data set; In response to the difference between the maximum temperature difference and the minimum temperature difference being smaller than the average value of the temperature differences of the preset judgment ratio, the water shortage detection result is obtained.

2. The method according to claim 1, characterized in that The step of obtaining the electric heating energy of the heating plate based on the first heating power includes: obtaining a first heating power data set based on a third preset sampling frequency; the first heating power data set including the first heating power obtained by sampling at the third preset sampling frequency within the first preset time period; the first heating power being calculated based on a heating voltage, a heating current, and a heating duty cycle of the humidifier heating disk at the same sampling moment; The electric heating energy of the heating disk is obtained according to the first heating power data set; the electric heating energy of the heating disk is obtained by accumulating all the first heating powers in the first heating power data set.

3. The method according to claim 1, characterized in that The second heating power is a preset ratio of the first heating power.

4. The method according to claim 1, wherein The preset judgment ratio includes 20%.

5. A humidifier water shortage detection device, characterized in that: The device comprises: an electric thermal energy acquisition module, configured to obtain electric thermal energy of the heating disk based on a first heating power; the electric thermal energy of the heating disk represents the electric thermal energy generated by the humidifier heating disk when heated at the first heating power within a first preset time period; a first temperature difference data set acquisition module, configured to obtain a first temperature difference data set based on a first preset sampling frequency; the first temperature difference data set includes a first temperature difference obtained by sampling at the first preset sampling frequency within the first preset time period; the first temperature difference is the difference between the temperature of the humidifier heating disk and the gas temperature at the humidifier air inlet at the same sampling moment; A temperature difference cumulative value acquisition module, configured to obtain a first temperature difference cumulative value based on the first temperature difference data set; the first temperature difference cumulative value is obtained by accumulating all the first temperature differences in the first temperature difference data set; a water shortage judgment module, configured to obtain a water shortage detection result in response to a ratio of the first temperature difference accumulated value to the electric heating energy of the heating disk meeting a threshold condition; The water shortage judgment module also includes: a second temperature difference data set acquisition module, configured to obtain a second temperature difference data set based on a second heating power and a second sampling frequency; the second temperature difference data set comprising a second temperature difference obtained by sampling at the second sampling frequency within a second preset time period; the second temperature difference being a difference between the temperature of the humidifier heating disk at the current sampling moment and the temperature of the humidifier heating disk before a third preset time period; A second temperature difference data characteristic value acquisition module is used to obtain the maximum temperature difference, the minimum temperature difference and the average temperature difference of the second temperature difference data set based on the second temperature difference data set; The water shortage detection result acquisition module is configured to obtain the water shortage detection result in response to the difference between the maximum temperature difference and the minimum temperature difference being less than the average value of the temperature differences of a preset judgment ratio.

6. A humidifier water shortage detection system, characterized in that: The humidifier includes a humidifier heating disk, and the system includes: a temperature sensing module, the temperature sensing module being used to obtain the temperature of the humidifier heating disk and the gas temperature at the air inlet of the humidifier; A controller connected to the temperature sensing module and the humidifier heating disk, wherein the controller is used to implement the steps of the method according to any one of claims 1 to 4.

7. A humidifier, characterized in that: The humidifier includes the humidifier water shortage detection system according to claim 6.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.

9. A computer program product, characterized in that The computer program product comprises a computer program, which implements the steps of the method according to any one of claims 1 to 4 when executed by a processor.

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