Air sterilization system based on controllable plasma flow

Abstract

The present invention provides an air sterilization system based on controllable plasma flow, which relates to the field of air purification technology. The system includes: a first acquisition module, used to acquire first bacteria content data and second bacteria content data; a second acquisition module, used to acquire air flow data and working power; a judgment module, used to determine whether at least one of the air flow data and the working power needs to be adjusted; a work control function module, if at least one of the air flow data and the working power needs to be adjusted, then determine the work control function; a determination module, used to determine the adjusted air flow data and the adjusted working power according to the work control function, the air flow data and the working power; a setting module, used to set according to the adjusted working power and the adjusted air flow data. According to the present invention, the air flow of the air purification and sterilization system and the power of the plasma generating device can be accurately controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and in particular to an air sterilization system based on controllable plasma flow. Background Art

[0002] CN104990139A discloses a low-temperature plasma air purification device, which relates to the field of plasma air purification technology, including a mounting bracket and a plasma air purification unit group arranged on the mounting bracket and a matching control circuit, the key of which is that the air purification units in the plasma air purification unit group are arranged in an array and each column of air purification units is arranged in series, the structure of the air purification unit includes an emitter and a receiver, the emitter includes two metal tubes arranged in parallel and symmetrically, and the cross-section is a polygon, and the receiver includes a metal wire located on the vertical plane of the two metal tubes and parallel to the metal tube. The beneficial technical effect of this scheme is that the air purification units are arranged in an array on the mounting bracket and each column of air purification units is arranged in series, and the generated plasma wind can generate a sufficiently large wind speed to circulate indoor air without the help of a fan, achieving a silent energy-saving effect and a very good air purification effect.

[0003] CN106051918B provides a plasma air purification device, which includes: a main body; a positive plate, which is arranged on the main body, and a first tip discharge part is arranged on the surface of the positive plate; a negative plate, which is arranged on the main body, and the negative plate and the positive plate are arranged opposite to each other, and a second tip discharge part is arranged on the surface of the negative plate close to the positive plate; and multiple tips are arranged on the first tip discharge part and the second tip discharge part. The scheme forms a stable and uniform plasma field at a low voltage through continuous tip discharge between multiple tips of the first tip discharge part and multiple tips of the second tip discharge part.

[0004] Therefore, in the related art, a plasma generator can be used to purify the air and improve the air quality. However, the related art lacks precise control means for the plasma generator, so as to accurately adjust the air flow of the air purification and sterilization system and the power of the plasma generator, and it is also difficult to accurately purify the indoor air.

[0005] The information disclosed in the background technology section of this application is only intended to deepen the understanding of the general background technology of this application, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0006] The present invention provides an air sterilization system based on controllable plasma flow, which can solve the technical problem that it is difficult to accurately adjust the air flow rate of the air purification and sterilization system and the power of the plasma generating device in the related art.

[0007] According to a first aspect of the present invention, there is provided an air sterilization system based on controllable plasma flow, comprising:

[0008] A first acquisition module is used to acquire first bacteria content data at an air inlet and second bacteria content data at an air outlet of the air sterilization system at multiple moments in a current control cycle;

[0009] A second acquisition module is used to acquire air flow data of the air sterilization system and the working power of the plasma generating device in the current control cycle, wherein the air sterilization system includes the plasma generating device;

[0010] a judgment module, used for determining whether at least one of the air flow data of the air sterilization system and the working power of the plasma generating device needs to be adjusted according to the first bacteria content data and the second bacteria content data;

[0011] a work control function module, for determining a work control function according to the first bacteria content data, the second bacteria content data, the air flow data and the work power if at least one of the air flow data of the air sterilization system and the work power of the plasma generating device needs to be adjusted, wherein the work control function is used to describe the relationship between the work power and air flow data of the plasma generating device and the sterilization capacity of the air sterilization system;

[0012] A determination module, configured to determine the adjusted air flow data and the adjusted working power according to the working control function, the air flow data and the working power;

[0013] The setting module is used to set the working power of the plasma generating device to the adjusted working power at the beginning of the next control cycle, and to set the air flow data of the air sterilization system to the adjusted air flow data.

[0014] Technical effect: According to the present invention, it is possible to judge whether the air flow data of the air sterilization system and the working power of the plasma generator need to be adjusted based on the actually collected bacterial content data, and determine the relationship between the working power of the plasma generator and the air flow data and the sterilization ability of the air sterilization system based on the measured data, so as to determine the adjusted air flow data and working power based on the relationship, so as to accurately control the air flow of the air purification and sterilization system and the power of the plasma generator, so that the air sterilization system can adapt to the sterilization and purification work of various indoor environments, and can achieve accurate purification of indoor air. When determining the adjustment conditions, multiple adjustment conditions can be set, which are used to represent the three conditions of air flow data not matching the working power, low sterilization efficiency, and sterilization work being completed, and when any of the three conditions is met, it can be determined whether at least one of the air flow data and the working power of the plasma generator needs to be adjusted, which can improve the judgment accuracy and the control accuracy of the air sterilization system. When determining the working control function, the relationship between the relative deviation of the first bacterial content data and the second bacterial content and the working power and air flow data can be described by the undetermined coefficient equation, and the relationship between the change rate of the bacterial content in the air and the working power and air flow data can be described, and the matching of the air flow data and the working power can be considered in the process of describing the relationship, so as to obtain an accurate undetermined coefficient equation, and then solve to obtain an accurate working control function, so as to provide an accurate data basis for solving the adjusted working power and air flow data. When solving the adjusted working power and the adjusted air flow data, the working control function can be used to determine the constraints after adjusting the air flow data and the working power, so that after adjusting the air flow data and the working power, the relative difference between the first bacterial content data at the air inlet and the second bacterial content data at the air outlet is significant, so that the plasma generating device can effectively disinfect the bacteria in the air flowing through, and after adjusting the air flow data and the working power, the air sterilization system can efficiently disinfect the bacteria in the indoor air. And the working control function can be used to set the objective function to maximize the disinfecting efficiency, so as to improve the indoor air quality as soon as possible.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and do not limit the present invention. Other features and aspects of the present invention will become more apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other embodiments can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of an air sterilization system based on controllable plasma flow according to an embodiment of the present invention is exemplarily shown. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0020] Figure 1 A schematic diagram of an air sterilization system based on controllable plasma flow according to an embodiment of the present invention is exemplarily shown, the system comprising:

[0021] A first acquisition module is used to acquire first bacteria content data at an air inlet and second bacteria content data at an air outlet of the air sterilization system at multiple moments in a current control cycle;

[0022] A second acquisition module is used to acquire air flow data of the air sterilization system and the working power of the plasma generating device in the current control cycle, wherein the air sterilization system includes the plasma generating device;

[0023] a judgment module, used for determining whether at least one of the air flow data of the air sterilization system and the working power of the plasma generating device needs to be adjusted according to the first bacteria content data and the second bacteria content data;

[0024] a work control function module, for determining a work control function according to the first bacteria content data, the second bacteria content data, the air flow data and the work power if at least one of the air flow data of the air sterilization system and the work power of the plasma generating device needs to be adjusted, wherein the work control function is used to describe the relationship between the work power and air flow data of the plasma generating device and the sterilization capacity of the air sterilization system;

[0025] A determination module, configured to determine the adjusted air flow data and the adjusted working power according to the working control function, the air flow data and the working power;

[0026] The setting module is used to set the working power of the plasma generating device to the adjusted working power at the beginning of the next control cycle, and to set the air flow data of the air sterilization system to the adjusted air flow data.

[0027] According to the plasma flow controllable air sterilization system of the embodiment of the present invention, it can judge whether the air flow data of the air sterilization system and the working power of the plasma generating device need to be adjusted based on the actually collected bacterial content data, and determine the relationship between the working power of the plasma generating device and the air flow data and the sterilization ability of the air sterilization system based on the measured data, and then determine the adjusted air flow data and working power based on the relationship, so as to accurately control the air flow of the air purification and sterilization system and the power of the plasma generating device, so that the air sterilization system can adapt to the sterilization and purification work of various indoor environments, and can realize accurate purification of indoor air.

[0028] According to one embodiment of the present invention, the first bacterial content data at the air inlet and the second bacterial content data at the air outlet of the air sterilization system can be obtained at multiple moments in the current control cycle through the first acquisition module. The air inhaled at the air inlet is the air in the room, so the first bacterial content data at the air inlet can represent the bacterial content in the indoor air. The air at the air outlet is the air obtained after being sterilized by the air sterilization system, so the second bacterial content data at the air outlet can represent the bacterial content in the air after being sterilized by the air sterilization system.

[0029] According to one embodiment of the present invention, the air flow data of the air sterilization system and the operating power of the plasma generating device in the current control cycle can be obtained through the second acquisition module. In the example, the air flow data of the air sterilization system can be the flow data of the air inhaled at the air inlet. The higher the operating power of the plasma generating device, the more plasma can be generated, so that the air flowing through the plasma generating device can be sterilized. The air flow data and the operating power can be adjusted at the end of each control cycle.

[0030] According to one embodiment of the present invention, a judgment module can be used to determine whether at least one of the air flow data of the air sterilization system and the operating power of the plasma generating device needs to be adjusted. For example, if the air flow data is large and the operating power is small, the generated plasma is not sufficient to disinfect all bacteria in the air flowing through the plasma generating device, so that the second bacteria content data does not decrease significantly compared to the first bacteria content data, then at least one of the air flow data and the operating power can be adjusted.

[0031] According to one embodiment of the present invention, if adjustment is required, the working control function can be first determined through the working control function module to express the relationship between the working power and air flow data of the plasma generating device and the sterilization capacity of the air sterilization system, and then the working control function is used to calculate the adjusted air flow data and the adjusted working power through the determination module, so as to use the adjusted air flow data and the adjusted working power for adjustment.

[0032] According to one embodiment of the present invention, determining whether at least one of the air flow data of the air sterilization system and the working power of the plasma generating device needs to be adjusted based on the first bacteria content data and the second bacteria content data includes: determining multiple adjustment conditions based on the first bacteria content data and the second bacteria content data; and determining whether at least one of the air flow data of the air sterilization system and the working power of the plasma generating device needs to be adjusted when any one of the multiple adjustment conditions is met.

[0033] According to an embodiment of the present invention, a plurality of adjustment conditions are determined according to the first bacteria content data and the second bacteria content data, including: determining the adjustment conditions according to formula (1): , Adjustment conditions and conditioning conditions ,

[0034] (1),

[0035] in, is the first bacterial content data at the i-th moment of the current control cycle, is the second bacterial content data at the i+1th moment of the current control cycle, n is the number of moments in the current control cycle, To preset the bacterial content, is the first preset change rate, is the second preset change rate, is the first bacterial content data at the first moment of the current control cycle, is the first bacterial content data at the nth moment of the current control cycle, is the time interval between adjacent moments, is the working power, is the air flow data, is the first preset power, is the first preset flow rate, and i and n are both positive integers.

[0036] According to one embodiment of the present invention, the adjustment condition of formula (1) is In It can indicate that the average value of the first bacterial content data at the air inlet of the air sterilization system is higher than the preset bacterial content, that is, the average bacterial content in the air of the indoor space is still relatively high, and efficient sterilization treatment is required. In this case, if the difference between the first bacterial content data at the air inlet and the second bacterial content data at the air outlet is not obvious, it means that the flow data of the air inhaled at the air inlet does not match the amount of plasma generated by the plasma generator. In other words, the air flow data does not match the working power of the plasma generator, and the working power of the plasma generator is weaker than the sterilization ability corresponding to the air flow data, and it is unable to effectively disinfect the bacteria in the air flowing through the plasma generator. In this case, it may be necessary to increase the working power of the plasma generator, or to reduce the air flow data while maintaining a high sterilization efficiency, or both. Therefore, the adjustment conditions In It can represent the relative difference between the first bacteria content data at the i-th moment and the second bacteria content data at the i+1-th moment. Since the air needs to flow through the plasma generator for disinfection, the time for the air to enter and leave the air sterilization system is delayed. Therefore, the first bacteria content data at each moment can be compared with the second bacteria content data at the next moment, that is, the second bacteria content data at the next moment can be considered to be the bacteria content data in the air that has been disinfected. Further, the average value of the relative difference between the first bacteria content data at each moment and the second bacteria content data at the next moment can be calculated. If the average value is less than or equal to the first preset change rate, it can be considered that the difference between the bacteria content data in the disinfected air and the bacteria content data in the undisinfected air is not obvious, and the disinfection effect is weak, that is, the bacteria in the air flowing through the plasma generator cannot be effectively disinfected.

[0037] According to one embodiment of the present invention, the adjustment condition of formula (1) is In The meaning of is the same as above and will not be repeated here. In middle, It can represent the total duration of the current control cycle, so, It can represent the average change rate of the first bacteria content data at the air inlet during the current control cycle, and can also represent the average change rate of the bacteria content in the air of the indoor space during the current control cycle. If the average change rate is low and the average bacteria content in the air of the indoor space is high, the purpose of efficient sterilization and air purification cannot be achieved. Therefore, in this case, at least one of the air flow data and the working power of the plasma generator can be adjusted.

[0038] According to one embodiment of the present invention, in the adjustment condition of formula (1) middle, It indicates that the average value of the bacteria content in the air of the indoor space is lower than the preset bacteria content, which means that the bacteria content in the air has reached the standard and the sterilization work has been completed. In this case, the air sterilization system can operate at a lower power, for example, the air flow data is reduced to a lower flow rate (for example, a first preset flow rate), and the working power of the plasma generator is reduced to a lower power (for example, a first preset power). If the measured air flow data is greater than the first preset flow rate, or the working power of the plasma generator is higher than the first preset power, the air flow data or the working power of the plasma generator can be adjusted.

[0039] In this way, a variety of adjustment conditions can be set to represent the three conditions of mismatch between air flow data and working power, low sterilization efficiency, and completion of sterilization work. When any of the three conditions is met, it can be determined whether at least one of the air flow data and the working power of the plasma generating device needs to be adjusted, which can improve the accuracy of judgment and the control accuracy of the air sterilization system.

[0040] According to one embodiment of the present invention, if at least one of the air flow data of the air sterilization system and the working power of the plasma generating device needs to be adjusted, the working control function module is used to determine the working control function that describes the relationship between the working power and air flow data of the plasma generating device and the sterilization capacity of the air sterilization system, and then the adjustment is made based on the working control function.

[0041] According to one embodiment of the present invention, if at least one of the air flow data of the air sterilization system and the working power of the plasma generating device needs to be adjusted, a working control function is determined according to the first bacteria content data, the second bacteria content data, the air flow data and the working power, including: acquiring the first bacteria content data, the second bacteria content data, the air flow data and the working power of a historical control cycle; determining the working control function according to the first bacteria content data, the second bacteria content data, the air flow data and the working power of a current control cycle and a historical control cycle.

[0042] According to an embodiment of the present invention, in order to make the working control function more accurate, in addition to the various data of the current control cycle, various data of multiple historical control cycles can also be obtained, so as to determine a more accurate working control function with more data as reference. The various data of the historical control cycle include the first bacteria content data, the second bacteria content data, the air flow data and the working power of the historical control cycle.

[0043] According to one embodiment of the present invention, determining a working control function according to first bacteria content data, second bacteria content data, air flow data and working power in a current control period and a historical control period includes: determining a group of undetermined coefficient equations of the working control function according to formula (2),

[0044] (2),

[0045] in, is the first bacterial content data at the i-th moment of the h-th historical control cycle. When h=0, is the first bacterial content data at the i-th moment of the current control cycle, is the first bacterial content data at the first moment of the hth historical control cycle. When h=0, is the first bacterial content data at the first moment of the current control cycle, is the first bacterial content data at the nth moment of the hth historical control cycle. When h=0, is the first bacterial content data at the nth moment of the current control cycle, is the second bacterial content data at the i+1th moment of the hth historical control cycle. When h=0, is the second bacterial content data at the i+1th moment in the current control cycle, is the operating power of the hth historical control cycle. When h=0, is the working power of the current control cycle, is the air flow data of the hth historical control cycle. When h=0, is the air flow data of the current control cycle, , , , , , , , and is the undetermined coefficient; according to the first bacteria content data, the second bacteria content data, the air flow data and the working power of the current control cycle and the historical control cycle, the undetermined coefficient is solved to obtain the solution value of the undetermined coefficient; according to the solution value of the undetermined coefficient and the undetermined coefficient equation, the working control function is obtained.

[0046] According to one embodiment of the present invention, in formula (2), It is the relative deviation between the first bacteria content data at one moment of the h-th historical control cycle and the second bacteria content data at the next moment. The relative deviation can reflect the matching between the power of the plasma generator and the air flow data of the h-th historical control cycle. If the relative deviation is small, the difference between the bacteria content data in the disinfected air and the bacteria content data in the undisinfected air is not obvious, and the disinfection effect is weak. Therefore, the value of the relative deviation is positively correlated with the working power of the plasma generator. On the other hand, if the relative deviation is small, it means that it is difficult to effectively disinfect the bacteria in the air flowing through the plasma generator, that is, the air flow through the plasma generator is too large. Therefore, the value of the relative deviation is negatively correlated with the air flow data. Based on the above analysis, multiple unknown coefficients can be set, and the unknown coefficient equation can be used to calculate the relative deviation. , to indicate the positive correlation between the relative deviation and the working power and the negative correlation with the air flow data.

[0047] According to one embodiment of the present invention, in formula (2), is the average change rate of the bacterial content data in the indoor space during the hth historical control cycle. The average change rate is positively correlated with the working power of the plasma generator and the air flow data. That is, the larger the air flow data, the more air flows through the plasma generator, which is more conducive to the sterilization and purification of the air. The larger the working power of the plasma generator, the more plasma is generated, and the more conducive it is to sterilize and purify the air flowing through. However, the average change rate is not a simple linear relationship with the working power and air flow data. Because it involves the matching problem of air flow data and working power, that is, if the working power is small, the increase of air flow data will not significantly improve the overall sterilization and purification effect. In other words, if the working power is small, it is impossible to generate enough plasma, and it is impossible to effectively sterilize a large amount of air flowing through. Only when the working power is increased, the air flow data can be increased to significantly improve the sterilization and purification effect. Based on the above analysis, the working power can be used as the base number, and the air flow data can be set in the exponential part. When the base number (working power) increases, the exponential part (air flow data) can be increased to significantly increase the overall value. If the base number is small, only increasing the exponential part will not significantly increase the overall value. Therefore, the undetermined coefficient equation can be set , to express the relationship between the average rate of change and the working power and air flow data.

[0048] According to one embodiment of the present invention, the first bacteria content data, the second bacteria content data, the air flow data and the working power data at multiple moments in the current control cycle and the historical control cycle can be respectively substituted into the above two undetermined coefficient equations. For example, the air flow data and working power data of at least 5 control cycles, as well as the first bacteria content data and the second bacteria content data at multiple moments in the 5 control cycles can be substituted into the first undetermined coefficient equation to solve , , , and These five undetermined coefficients are used to substitute the air flow data and working power data of at least 4 control cycles, as well as the first bacteria content data and the second bacteria content data at multiple moments in the 4 control cycles into the second undetermined coefficient equation to solve , , and These four undetermined coefficients.

[0049] According to one embodiment of the present invention, after obtaining the solution values ​​of the above-mentioned undetermined coefficients, the above-mentioned undetermined coefficient equation group can be substituted to obtain the working control function.

[0050] In this way, the relationship between the relative deviation of the first bacteria content data and the second bacteria content and the working power and air flow data can be described by the undetermined coefficient equation, and the relationship between the change rate of the bacteria content in the air and the working power and air flow data can be described. In the process of describing the relationship, the matching of the air flow data and the working power is considered, so as to obtain an accurate undetermined coefficient equation, and then solve to obtain an accurate working control function, thereby providing an accurate data basis for solving the adjusted working power and air flow data.

[0051] According to an embodiment of the present invention, after the work control function is determined, the adjusted air flow data and the adjusted work power may be determined based on the work control function by a determination module.

[0052] According to one embodiment of the present invention, the adjusted air flow data and the adjusted working power are determined according to the working control function, the air flow data and the working power, including: determining the constraints of a parameter optimization model according to the working control function, the air flow data and the working power; determining the objective function of the parameter optimization model according to the air flow data and the working power; determining the adjusted air flow data and the adjusted working power according to the constraints and the objective function.

[0053] According to one embodiment of the present invention, the adjusted air flow data and the adjusted working power can be solved by a parameter optimization model, for example, the parameter optimization model is a nonlinear programming model, a genetic algorithm model, etc., and the present invention does not limit the specific type of the parameter optimization model. The constraint conditions and the objective function of the parameter optimization model can be set, so that the optimal solution of the air flow data and the working power can be solved under the constraint of the constraint conditions. The optimal solution can achieve the goal described by the objective function to the greatest extent, so that the optimal solution can be used as the adjusted air flow data and the adjusted working power.

[0054] According to one embodiment of the present invention, determining the constraint conditions of the parameter optimization model according to the working control function, the air flow data and the working power includes: Or adjustment conditions When is satisfied, the constraint conditions of the parameter optimization model are determined according to formula (3), formula (4), formula (5) and formula (6).

[0055] (3),

[0056] (4),

[0057] (5),

[0058] (6),

[0059] in, is the working power adjustment amount, is the air flow data adjustment amount, is the maximum power of the plasma generator, is the maximum air flow rate of the air sterilization system, for The solution value of for The solution value of for The solution value of for The solution value of for The solution value of for The solution value of for The solution value of for The solution value of for The solution value of When is satisfied, the constraint conditions of the parameter optimization model are determined according to formula (7) and formula (8).

[0060] (7),

[0061] (8),

[0062] According to one embodiment of the present invention, if the adjustment condition Or adjustment conditions is satisfied, it means that the bacterial content in the indoor air is still excessive, and there is at least one of the two problems: the working power of the plasma generator does not match the air flow data, and the sterilization efficiency is low. Therefore, the constraint conditions can be set based on the working control function determined above. The formula (3) The relative difference between the first bacteria content data at the air inlet and the second bacteria content data at the air outlet after adjusting the working power and the air flow data is determined based on the working control function. The relative difference can be set in the constraint condition to be greater than or equal to the first preset change rate, that is, the adjusted working power and the adjusted air flow data are matched, so that the relative difference between the two can be larger, and the bacteria in the air flowing through the plasma generating device can be effectively disinfected.

[0063] According to one embodiment of the present invention, in formula (4) The change rate of the bacterial content in the indoor air after adjusting the working power and air flow data based on the working control function can be set in the constraint condition to be greater than or equal to the second preset change rate, that is, the air sterilization system has a high sterilization efficiency for the indoor air and can achieve efficient sterilization of bacteria in the indoor air. Further, formula (5) and formula (6) indicate that the adjusted working power and adjusted air flow data do not exceed their respective upper limits.

[0064] According to one embodiment of the present invention, if the adjustment condition is satisfied, it means that the bacterial content in the indoor air has reached the standard. Then, formula (7) and formula (8) can be used to make the adjusted working power equal to the first preset power and the adjusted air flow data equal to the second preset power, that is, to maintain low power operation so that the bacterial content in the indoor air is kept at a low level.

[0065] According to one embodiment of the present invention, determining the objective function of the parameter optimization model according to the air flow data and the operating power includes: Or adjustment conditions When is satisfied, the objective function of the parameter optimization model is determined according to formula (9):

[0066] (9),

[0067] According to one embodiment of the present invention, if the adjustment condition Or adjustment conditions is satisfied, then formula (9) can be set as the objective function, that is, to maximize the rate of change of the bacterial content in the indoor air, so as to complete the disinfection of bacteria in the indoor air with the highest efficiency, improve the safety of the indoor air, and make the indoor air quality meet the standard as soon as possible.

[0068] According to one embodiment of the present invention, the optimal solution of the working power adjustment amount and the air flow data adjustment amount can be solved based on the constraints and objective functions determined above, and the adjusted working power and adjusted air flow data can be obtained by using the optimal solution and the working power and air flow data of the current control cycle.

[0069] In this way, the constraint conditions after adjusting the air flow data and the working power can be determined by the working control function, so that after adjusting the air flow data and the working power, the relative difference between the first bacterial content data at the air inlet and the second bacterial content data at the air outlet is significant, so that the plasma generating device can effectively disinfect the bacteria in the air flowing through, and after adjusting the air flow data and the working power, the air sterilization system can efficiently disinfect the bacteria in the indoor air. The working control function can also be used to set the objective function to maximize the disinfecting efficiency, thereby improving the indoor air quality as soon as possible.

[0070] According to one embodiment of the present invention, after determining the adjusted working power and the adjusted air flow data, the setting module may set the working power of the plasma generating device to the adjusted working power and set the air flow data of the air sterilization system to the adjusted air flow data at the beginning of the next control cycle.

[0071] According to the plasma flow controllable air sterilization system of the embodiment of the present invention, it is possible to judge whether the air flow data of the air sterilization system and the working power of the plasma generator need to be adjusted based on the actually collected bacterial content data, and determine the relationship between the working power of the plasma generator and the air flow data and the sterilization capacity of the air sterilization system based on the measured data, so as to determine the adjusted air flow data and working power based on the relationship, so as to accurately control the air flow of the air purification and sterilization system and the power of the plasma generator, so that the air sterilization system can adapt to the sterilization and purification work of various indoor environments, and can realize accurate purification of indoor air. When determining the adjustment conditions, multiple adjustment conditions can be set, which are respectively used to represent the three conditions that the air flow data does not match the working power, the sterilization efficiency is low, and the sterilization work has been completed, and when any of the three conditions is met, it can be determined whether at least one of the air flow data and the working power of the plasma generator needs to be adjusted, which can improve the judgment accuracy and the control accuracy of the air sterilization system. When determining the working control function, the relationship between the relative deviation of the first bacterial content data and the second bacterial content and the working power and air flow data can be described by the undetermined coefficient equation, and the relationship between the change rate of the bacterial content in the air and the working power and air flow data can be described, and the matching of the air flow data and the working power can be considered in the process of describing the relationship, so as to obtain an accurate undetermined coefficient equation, and then solve to obtain an accurate working control function, so as to provide an accurate data basis for solving the adjusted working power and air flow data. When solving the adjusted working power and the adjusted air flow data, the working control function can be used to determine the constraints after adjusting the air flow data and the working power, so that after adjusting the air flow data and the working power, the relative difference between the first bacterial content data at the air inlet and the second bacterial content data at the air outlet is significant, so that the plasma generating device can effectively disinfect the bacteria in the air flowing through, and after adjusting the air flow data and the working power, the air sterilization system can efficiently disinfect the bacteria in the indoor air. And the working control function can be used to set the objective function to maximize the disinfecting efficiency, so as to improve the indoor air quality as soon as possible.

[0072] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air sterilization system based on controllable plasma flow, characterized in that: include: A first acquisition module is used to acquire first bacteria content data at an air inlet and second bacteria content data at an air outlet of the air sterilization system at multiple moments in a current control cycle; A second acquisition module is used to acquire air flow data of the air sterilization system and the working power of the plasma generating device in the current control cycle, wherein the air sterilization system includes the plasma generating device; a judgment module, used for determining whether at least one of the air flow data of the air sterilization system and the working power of the plasma generating device needs to be adjusted according to the first bacteria content data and the second bacteria content data; a work control function module, configured to determine a work control function according to the first bacteria content data, the second bacteria content data, the air flow data and the work power if at least one of the air flow data of the air sterilization system and the work power of the plasma generating device needs to be adjusted; A determination module, configured to determine the adjusted air flow data and the adjusted working power according to the working control function, the air flow data and the working power; A setting module, used for setting the working power of the plasma generating device to the adjusted working power and setting the air flow data of the air sterilization system to the adjusted air flow data at the start time of the next control cycle; If at least one of the air flow data of the air sterilization system and the working power of the plasma generating device needs to be adjusted, a working control function is determined according to the first bacteria content data, the second bacteria content data, the air flow data and the working power, including: Acquire the first bacteria content data, the second bacteria content data, the air flow data and the working power of the historical control period; Determine a working control function according to the first bacteria content data, the second bacteria content data, the air flow data and the working power of the current control cycle and the historical control cycle; According to the first bacteria content data, the second bacteria content data, the air flow data and the working power of the current control cycle and the historical control cycle, the working control function is determined, including: According to the formula Determine the undetermined coefficient equations of the working control function, where C h,1,i is the first bacterial content data at the i-th moment of the h-th historical control cycle. When h=0, C h,1,i is the first bacterial content data at the i-th moment of the current control cycle, C h,1,1 is the first bacterial content data at the first moment of the hth historical control cycle. When h = 0, C h,1,1 is the first bacterial content data at the first moment of the current control cycle, C h,1,n is the first bacterial content data at the nth moment of the hth historical control cycle. When h = 0, C h,1,n is the first bacterial content data at the nth moment of the current control cycle, C h,2,i+1 is the second bacterial content data at the i+1th moment of the hth historical control cycle. When h=0, C h,2,i+1 is the second bacterial content data at the i+1th moment of the current control cycle, P h,w is the operating power of the hth historical control cycle. When h = 0, P h,w is the working power of the current control cycle, F h,w is the air flow data of the hth historical control cycle. When h=0, F h,w is the air flow data of the current control cycle, α1, α2, α3, α4, α5, β1, β2, β3 and β4 are unknown coefficients, n is the number of moments in the current control cycle, and Δt is the time interval between adjacent moments; Solving the undetermined coefficients according to the first bacteria content data, the second bacteria content data, the air flow data and the working power of the current control cycle and the historical control cycle to obtain the solution values ​​of the undetermined coefficients; The working control function is obtained according to the solved value of the undetermined coefficient and the undetermined coefficient equation.

2. The air sterilization system based on controllable plasma flow according to claim 1 is characterized in that: Determining whether at least one of the air flow data of the air sterilization system and the working power of the plasma generating device needs to be adjusted according to the first bacteria content data and the second bacteria content data, comprising: determining a plurality of adjustment conditions according to the first bacteria content data and the second bacteria content data; When any one of the plurality of adjustment conditions is satisfied, it is determined whether at least one of the air flow data of the air sterilization system and the operating power of the plasma generating device needs to be adjusted.

3. The air sterilization system based on controllable plasma flow according to claim 2 is characterized in that: Determining a plurality of adjustment conditions according to the first bacteria content data and the second bacteria content data, including: According to the formula Determine adjustment conditions C1, C2 and C3, where C 1,i is the first bacterial content data at the i-th moment of the current control cycle, C 2,i+1 is the second bacterial content data at the i+1th moment of the current control cycle, n is the number of moments in the current control cycle, C p is the preset bacterial content, k1 is the first preset change rate, k2 is the second preset change rate, C 1,1 is the first bacterial content data at the first moment of the current control cycle, C 1,n is the first bacterial content data at the nth moment of the current control cycle, Δt is the time interval between adjacent moments, P w is the working power, F w is the air flow data, P p,1 is the first preset power, F p,1 is the first preset flow rate, and i and n are both positive integers.

4. The air sterilization system based on controllable plasma flow according to claim 1 is characterized in that: Determining adjusted air flow data and adjusted working power according to the working control function, the air flow data and the working power includes: Determining constraint conditions of a parameter optimization model according to the work control function, the air flow data and the work power; Determining an objective function of a parameter optimization model according to the air flow data and the operating power; According to the constraint conditions and the objective function, the adjusted air flow data and the adjusted working power are determined.

5. The air sterilization system based on controllable plasma flow according to claim 4 is characterized in that: Determining the constraint conditions of the parameter optimization model according to the working control function, the air flow data and the working power includes: When the adjustment condition C1 or the adjustment condition C2 is met, according to the formula P w +ΔP≤P max F h +ΔF≤F max Determine the constraint conditions of the parameter optimization model, where ΔP is the working power adjustment amount, ΔF is the air flow data adjustment amount, and P max is the maximum power of the plasma generator, F max is the maximum air flow rate of the air sterilization system, α 1,F is the solution value of α1, α 2,F is the solution value of α2, α 3,F is the solution value of α3, α 4,F is the solution value of α4, α 5,F is the solution value of α5, β 1,F is the solution value of β1, β 2,F is the solution value of β2, β 3,F is the solution value of β3, β 4,F is the solution value of β4; When the adjustment condition C3 is met, according to the formula P w +ΔP=P p,1 F w +ΔF=F p,1 Identify constraints for parameter optimization models.

6. The air sterilization system based on controllable plasma flow according to claim 5 is characterized in that: Determining the objective function of the parameter optimization model according to the air flow data and the working power includes: When the adjustment condition C1 or the adjustment condition C2 is met, according to the formula Determine the objective function of the parameter optimization model, where max is the maximization function.

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