Low-temperature plasma active water preparation method, device, equipment, medium and product

Abstract

The invention provides a low-temperature plasma active water preparation method, device and equipment, a medium and a product, relates to the technical field of plasma active water preparation, and aims to overcome the defect that the concentration of active water is not accurate enough when low-temperature plasma active water is prepared in the prior art and realize the purpose that the concentration of the active water is not accurate enough when the low-temperature plasma active water is prepared. And the concentration of the active water is accurately determined. Comprising the following steps: performing ionization treatment on pretreated air to obtain low-temperature plasma; the low-temperature plasma is mixed with water, low-temperature plasma active water is obtained, and the low-temperature plasma active water comprises active substances; monitoring the real-time concentration of active substances in the low-temperature plasma active water; and on the basis of the deviation between the real-time concentration of the active substance and the preset target concentration, regulating and controlling ionization treatment parameters to obtain the low-temperature plasma active water with the concentration of the active substance meeting the preset target concentration.

Description

Technical Field

[0001] This invention relates to the field of plasma activated water preparation technology, and in particular to a method, apparatus, equipment, medium and product for preparing low-temperature plasma activated water. Background Technology

[0002] In agricultural production, problems such as scarce land resources, prominent obstacles to continuous cropping, and low quality rates exist. Under the production goal of high and stable yields, the excessive application of chemical fertilizers is still widespread, leading to problems such as soil compaction, secondary salinization, and nutrient imbalance in planting areas. Furthermore, pest and disease control mainly relies on traditional chemical pesticides, which have a series of problems such as residual pollution and pesticide resistance. Low-temperature plasma-activated water (PAW) has unique advantages in the agricultural field. It can enrich water with active oxygen and active nitrogen, which can directly promote crop photosynthesis, root development, and nutrient absorption, acting like "biostimulants," and can also improve soil microecology, inhibiting harmful bacteria and activating beneficial microorganisms.

[0003] However, the mechanism by which PAW (polydioxanone) increases crop yield and defends against pests is not yet systematically understood. This ambiguity leads to a lack of precise targeting in the application of PAW, making it difficult to scientifically regulate the concentration of effective components and the timing of application, thus hindering its full realization of potential in agricultural production. Furthermore, due to the precision, high technical complexity, and short plasma lifetime of plasma preparation processes, there is a need to develop efficient, energy-saving, and low-cost preparation methods suitable for agricultural applications. Summary of the Invention

[0004] This invention provides a method, apparatus, equipment, medium, and product for preparing low-temperature plasma activated water, which solves the defect in the prior art that the concentration of activated water is not accurate enough when preparing low-temperature plasma activated water, and realizes the accurate determination of the concentration of activated water when preparing low-temperature plasma activated water.

[0005] This invention provides a method for preparing low-temperature plasma activated water, comprising the following steps.

[0006] The pretreated air is ionized to obtain low-temperature plasma; Low-temperature plasma is mixed with water to obtain low-temperature plasma activated water, which includes active substances. Monitor the real-time concentration of active substances in low-temperature plasma activated water; Based on the deviation between the real-time concentration of active substances and the preset target concentration, the ionization treatment parameters are adjusted to obtain low-temperature plasma activated water with an active substance concentration that meets the preset target concentration.

[0007] According to the present invention, a method for preparing low-temperature plasma activated water further includes: Air is introduced into a drying chamber for drying, resulting in dried air. The drying chamber is used to reduce the humidity of the air to a preset level. The dried air is introduced into a filter for filtration to obtain pre-treated air. The filter is used to filter particles with a diameter larger than a preset size.

[0008] According to the present invention, a method for preparing low-temperature plasma activated water involves ionizing pretreated air to obtain low-temperature plasma, comprising: The pretreated air is ionized by a plasma generator to obtain low-temperature plasma. The plasma generator includes an array of electrodes with nitrided surfaces.

[0009] According to the present invention, a method for preparing low-temperature plasma activated water further includes: Water is ionized using a plasma generator to obtain ionized water. Low-temperature plasma is mixed with ionized water to obtain low-temperature plasma activated water.

[0010] According to a method for preparing low-temperature plasma activated water provided by the present invention, monitoring the real-time concentration of active substances in the low-temperature plasma activated water includes: Real-time acquisition of monitoring parameters, including at least one of the following: air temperature, air humidity, light intensity, ionization discharge power, ionization discharge duration, air inlet flow rate, temperature of low-temperature plasma active water, pH value of low-temperature plasma active water, and conductivity of low-temperature plasma active water. Based on monitoring parameters, the real-time concentration of active substances in low-temperature plasma activated water is determined.

[0011] According to the present invention, a method for preparing low-temperature plasma activated water is provided, which adjusts ionization treatment parameters based on the deviation between the real-time concentration of the active substance and the preset target concentration, including: Based on the deviation between the real-time concentration of the active substance and the preset target concentration, the optimal ionization treatment parameters are determined. The optimal ionization treatment parameters include at least one of the following: optimal ionization discharge power, optimal ionization discharge frequency, and optimal air introduction flow rate. The pretreated air is ionized using optimal ionization parameters to obtain low-temperature plasma.

[0012] The present invention also provides a low-temperature plasma activated water preparation device, comprising the following modules: a processing module, a mixing module, a monitoring module, and a control module; The processing module is used to ionize the pretreated air to obtain low-temperature plasma; A mixing module is used to mix low-temperature plasma with water to obtain low-temperature plasma activated water, which includes active substances. The monitoring module is used to monitor the real-time concentration of active substances in low-temperature plasma activated water; The control module is used to adjust the ionization treatment parameters based on the deviation between the real-time concentration of the active substance and the preset target concentration, so as to obtain low-temperature plasma activated water with an active substance concentration that meets the preset target concentration.

[0013] According to the low-temperature plasma activated water preparation apparatus provided by the present invention, the processing module is further used for: Air is introduced into a drying chamber for drying, resulting in dried air. The drying chamber is used to reduce the humidity of the air to a preset level. The dried air is introduced into a filter for filtration to obtain pre-treated air. The filter is used to filter particles with a diameter larger than a preset size.

[0014] According to the present invention, a low-temperature plasma activated water preparation device, the processing module is specifically used for: The pretreated air is ionized by a plasma generator to obtain low-temperature plasma. The plasma generator includes an array of electrodes with nitrided surfaces.

[0015] According to the low-temperature plasma active water preparation device provided by the present invention, the processing module is further used to: ionize water by a plasma generator to obtain ionized water; The mixing module is also used to mix low-temperature plasma with ionized water to obtain low-temperature plasma activated water.

[0016] According to the present invention, a low-temperature plasma activated water preparation device includes a monitoring module, which is specifically used for: Real-time acquisition of monitoring parameters, including at least one of the following: air temperature, air humidity, light intensity, ionization discharge power, ionization discharge duration, air inlet flow rate, temperature of low-temperature plasma active water, pH value of low-temperature plasma active water, and conductivity of low-temperature plasma active water. Based on monitoring parameters, the real-time concentration of active substances in low-temperature plasma activated water is determined.

[0017] According to the present invention, a low-temperature plasma activated water preparation device includes a control module specifically used for: Based on the deviation between the real-time concentration of the active substance and the preset target concentration, the optimal ionization treatment parameters are determined. The optimal ionization treatment parameters include at least one of the following: optimal ionization discharge power, optimal ionization discharge frequency, and optimal air introduction flow rate. The pretreated air is ionized using optimal ionization parameters to obtain low-temperature plasma.

[0018] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement any of the above-described methods for preparing low-temperature plasma activated water.

[0019] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-described methods for preparing low-temperature plasma activated water.

[0020] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements any of the low-temperature plasma activated water preparation methods described above.

[0021] This invention provides a method, apparatus, equipment, medium, and product for preparing low-temperature plasma activated water. Low-temperature plasma is obtained by ionizing pretreated air. The low-temperature plasma is then mixed with water to obtain low-temperature plasma activated water containing active substances. Furthermore, during the mixing process, the real-time concentration of active substances in the low-temperature plasma activated water is monitored, and the deviation between the real-time concentration and the preset target concentration is determined. Based on this deviation, the ionization parameters during the ionization of the pretreated air are adjusted to regulate the concentration of active substances in the low-temperature plasma activated water, thereby obtaining low-temperature plasma activated water with an active substance concentration that meets the preset target concentration. This allows for accurate determination of the active substance concentration in the activated water during preparation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is one of the flowcharts of the low-temperature plasma activated water preparation method provided by the present invention.

[0024] Figure 2 This is the second schematic diagram of the low-temperature plasma activated water preparation method provided by the present invention.

[0025] Figure 3 This is the third schematic diagram of the low-temperature plasma activated water preparation method provided by the present invention.

[0026] Figure 4 This is the fourth schematic diagram of the low-temperature plasma activated water preparation method provided by the present invention.

[0027] Figure 5 This is the fifth schematic diagram of the low-temperature plasma activated water preparation method provided by the present invention.

[0028] Figure 6 This is the sixth schematic diagram of the low-temperature plasma activated water preparation method provided by the present invention.

[0029] Figure 7 This is a schematic diagram of the low-temperature plasma activated water preparation system provided by the present invention.

[0030] Figure 8 This is a schematic diagram of the structural cross-sectional view of the plasma generator provided by the present invention.

[0031] Figure 9 This is a schematic diagram of the changes in the concentration of active substances and pH value with preparation time provided by the present invention.

[0032] Figure 10 This is a schematic diagram of the low-temperature plasma activated water preparation device provided by the present invention.

[0033] Figure 11 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0035] Applying PAW (propaganda oxychloride) to agriculture offers a new path to increase yields without relying on chemical fertilizers, potentially breaking through the yield ceiling of traditional technologies. The active ingredients in PAW directly inhibit or kill insect eggs and larvae, and its mechanism of action differs from chemical pesticides, making it less likely to induce pesticide resistance in pests. Simultaneously, PAW can activate the plant's own defense system, enhancing its resistance to pests. This dual effect of "directly killing pests and inducing resistance through the plant's own defense system" holds promise for replacing some chemical pesticides and solving the problem of chemical dependence.

[0036] Thus, PAW technology can overcome the limitations of traditional agricultural planting techniques, addressing the shortcomings of chemical pesticide residue pollution and the poor stability of biological agents. It achieves residue-free, broad-spectrum, and highly efficient green plant protection through plasma technology. This provides a new path for green and high-yield agriculture, a new technological means for the "reduced pesticide and controlled fertilizer" strategy, support for building an environmentally friendly agricultural production model, and promotes a virtuous cycle in the agricultural ecosystem.

[0037] The following is combined Figures 1 to 11 This invention describes the method, apparatus, equipment, medium, and product for preparing low-temperature plasma activated water.

[0038] Figure 1 This is one of the schematic flowcharts of the low-temperature plasma activated water preparation method provided by the present invention, such as... Figure 1 As shown, the method includes the following: Step 101: Ionize the pretreated air to obtain low-temperature plasma.

[0039] Step 102: Mix the low-temperature plasma with water to obtain low-temperature plasma activated water.

[0040] Low-temperature plasma activated water includes active substances.

[0041] Step 103: Monitor the real-time concentration of active substances in the low-temperature plasma activated water.

[0042] Step 104: Based on the deviation between the real-time concentration of the active substance and the preset target concentration, adjust the ionization treatment parameters to obtain low-temperature plasma activated water with an active substance concentration that meets the preset target concentration.

[0043] In one possible implementation, the pretreated air is ionized to obtain a low-temperature plasma, including: ionizing the pretreated air using a plasma generator to obtain a low-temperature plasma, the plasma generator including an array of electrodes whose surfaces are nitrided.

[0044] In one possible implementation, the plasma generator includes an array of high-voltage electrodes, with the spacing between the electrodes controlled to be 2 mm ± 0.1 mm. The discharge parameters of the plasma generator can be: an ionization discharge power of 18 kV pulse voltage, an ionization discharge frequency of 1 kHz, and an electron density greater than 102. 11 / cm 3 .

[0045] The electrode surface is nitrided, which can extend its service life to 2000 hours.

[0046] In one possible implementation, this application employs a gas-phase and gas-liquid mixed-phase discharge synergistic mechanism, which can enhance the activity of active materials (e.g., H2O2, NO3). - This improves the generation efficiency of active water (etc.) and thus optimizes the preparation efficiency of active water.

[0047] In this embodiment, the prepared low-temperature plasma activated water can expand agricultural applications and meet the needs of large-scale farmland treatment. Modular design increases hourly processing capacity by 3-5 times while reducing energy consumption to one-third of traditional technologies. Based on a two-stage gas pretreatment and intelligent closed-loop collaborative control (i.e., adjusting ionization parameters based on the deviation between the real-time concentration of active substances and the preset target concentration), the concentration of active substances in the activated water (e.g., controlling NO3) can be controlled. - Precise control of concentration (50-200ppm) provides technical support for standardized agricultural applications.

[0048] In this embodiment, low-temperature plasma is obtained by ionizing pretreated air. The low-temperature plasma is then mixed with water to obtain low-temperature plasma-activated water containing active substances. Furthermore, during the mixing process, the real-time concentration of active substances in the low-temperature plasma-activated water is monitored, and the deviation between the real-time concentration and the preset target concentration is determined. Based on this deviation, the ionization parameters during the ionization of the pretreated air are adjusted to regulate the concentration of active substances in the low-temperature plasma-activated water, thereby obtaining low-temperature plasma-activated water with an active substance concentration that meets the preset target concentration. This allows for accurate determination of the active substance concentration in the activated water during its preparation.

[0049] Figure 2 This is a second schematic diagram of the low-temperature plasma activated water preparation method provided by the present invention, as shown below. Figure 2 As shown, the method includes the following: Step 201: Introduce air into a drying chamber for drying treatment to obtain dried air.

[0050] The drying chamber is used to reduce the humidity of the air to a preset level.

[0051] Step 202: The dried air is introduced into the filter for filtration to obtain pre-treated air.

[0052] The filter is used to filter particles with a diameter larger than a preset size.

[0053] In one possible implementation, the air pretreatment system has a two-stage purification structure, which first introduces air into a molecular sieve drying chamber, which can reduce the humidity of the air to a preset humidity level (e.g., less than 10%).

[0054] Furthermore, the dried air is introduced into a filter, which includes a HEPA filter element (filtration efficiency of 99.97%). By filtering through the filter, particulate matter larger than the preset size in the air can be removed, resulting in pre-treated air.

[0055] Thus, based on the modular design of the molecular sieve drying chamber and filter, each component can be replaced individually, improving the efficiency and effectiveness of air pretreatment.

[0056] Figure 3 This is the third schematic diagram of the low-temperature plasma activated water preparation method provided by the present invention, as shown below. Figure 3 As shown, the method includes the following: Step 301: Ionize the water using a plasma generator to obtain ionized water.

[0057] Step 302: Mix the low-temperature plasma with the ionized water to obtain low-temperature plasma activated water.

[0058] In one possible implementation, not only can pretreated air be ionized using a plasma generator to obtain low-temperature plasma, but water can also be ionized using the same generator to obtain ionized water. Therefore, by mixing the low-temperature plasma with the ionized water, low-temperature plasma-activated water can also be obtained.

[0059] In one possible implementation, water can also be ionized using a plasma generator to directly obtain ionized water (i.e., low-temperature plasma activated water).

[0060] In the embodiments of this application, low-temperature plasma activated water can be obtained in a variety of ways, thereby improving the efficiency of obtaining low-temperature plasma activated water.

[0061] Figure 4This is the fourth schematic diagram of the low-temperature plasma activated water preparation method provided by the present invention, as shown below. Figure 4 As shown, the method includes the following: Step 401: Ionize the pretreated air to obtain low-temperature plasma.

[0062] Step 402: Mix the low-temperature plasma with water to obtain low-temperature plasma activated water.

[0063] Step 403: Acquire monitoring parameters in real time, and determine the real-time concentration of active substances in low-temperature plasma activated water based on the monitoring parameters.

[0064] The monitoring parameters include at least one of the following: air temperature, air humidity, light intensity, ionization discharge power, ionization discharge duration, air inlet flow rate, temperature of low-temperature plasma activated water, pH value of low-temperature plasma activated water, and conductivity of low-temperature plasma activated water.

[0065] Step 404: Based on the deviation between the real-time concentration of the active substance and the preset target concentration, adjust the ionization treatment parameters to obtain low-temperature plasma activated water with an active substance concentration that meets the preset target concentration.

[0066] In one possible implementation, the concentration of active substances (e.g., nitrate ion concentration), pH value (2.5-7.0), and temperature (5-45℃) of the low-temperature plasma activated water can be monitored in real time using a multi-parameter sensor group included in the gas-liquid mixing monitoring system.

[0067] Furthermore, based on the intelligent closed-loop collaborative control system, the ionization treatment parameters are adjusted according to the deviation between the real-time concentration of the active substance and the preset target concentration. The intelligent closed-loop collaborative control system is embedded in the main control unit of the device and can work collaboratively with the air pretreatment system, plasma generator, and gas-liquid mixing monitoring system through an industrial bus to achieve precise, stable, and adaptive control of key indicators of low-temperature plasma activated water.

[0068] Specifically, the physical information neural network soft measurement layer in the intelligent closed-loop collaborative control system can be used to estimate the concentration of active substances in low-temperature plasma activated water in real time. Based on inputs such as air temperature, air humidity, light intensity, ionization discharge power, ionization discharge duration, air inlet flow rate, temperature of the low-temperature plasma activated water, pH value of the low-temperature plasma activated water, and conductivity of the low-temperature plasma activated water, a feedforward neural network with a 9-128-128-3 structure can output the concentration of active substances in the low-temperature plasma activated water (e.g., nitrate ions (NO3-)). -The concentrations of hydrogen peroxide (H2O2) and the estimated pH value of the low-temperature plasma activated water were also measured.

[0069] It should be noted that the 9-128-128-3 structure of the feedforward neural network can be understood as follows: 9 input parameters, two hidden layers (each with 128 neurons to capture the relationship between input and output), and 3 output parameters. During network training, the residuals of the plasma chemical reaction kinetic equations are used as physical constraints (weights λ). phy =10 2 An embedded loss function is used to ensure that the estimation results are both data-driven and physically plausible. The estimation accuracy R0 is... 2 >0.98, inference latency <10ms.

[0070] In this embodiment, multiple monitoring parameters are acquired in real time, and the real-time concentration of active substances in the low-temperature plasma activated water is determined based on these parameters. Then, based on the deviation between the real-time concentration of active substances and a preset target concentration, the ionization treatment parameters are adjusted. Thus, the pretreated air is ionized using the adjusted ionization treatment parameters, and the resulting low-temperature plasma is mixed with water to obtain low-temperature plasma activated water with an active substance concentration that meets the preset target concentration.

[0071] Figure 5 This is the fifth schematic diagram of the low-temperature plasma activated water preparation method provided by the present invention, as shown below. Figure 5 As shown, the method includes the following: Step 501: Ionize the pretreated air to obtain low-temperature plasma.

[0072] Step 502: Mix the low-temperature plasma with water to obtain low-temperature plasma activated water.

[0073] Step 503: Monitor the real-time concentration of active substances in the low-temperature plasma activated water.

[0074] Step 504: Determine the optimal ionization treatment parameters based on the deviation between the real-time concentration of the active substance and the preset target concentration.

[0075] The optimal ionization treatment parameters include at least one of the following: optimal ionization discharge power, optimal ionization discharge frequency, and optimal air introduction flow rate.

[0076] Step 505: Ionize the pretreated air based on the optimal ionization treatment parameters to obtain low-temperature plasma.

[0077] In one possible implementation, Figure 6 This is the sixth schematic diagram of the low-temperature plasma activated water preparation method provided by the present invention, as shown below. Figure 6As shown, the physical information neural network soft measurement layer in the intelligent closed-loop collaborative control system can receive sensor information transmitted by the sensor array, and output the concentration estimate of the active substance through the PINN soft measurement algorithm.

[0078] Furthermore, the multi-objective optimization decision layer in the intelligent closed-loop collaborative control system can receive user mode commands and real-time sensor data, and adaptively determine the optimal operating point based on the application scenario and real-time operating conditions. The multi-objective optimization decision layer can construct an optimization model with the objective functions of maximizing the concentration of active substances (f1), minimizing the total power consumption of the system (f2), and minimizing the pH setting deviation (f3).

[0079] Furthermore, during the offline preparation phase, based on user-mode instructions, the Pareto optimal solution set corresponding to different application modes (such as "high-efficiency sterilization" or "energy-saving maintenance") is calculated using the multi-objective decision optimization algorithm (NSGA-II). After data compression, the solution is stored in the offline optimal solution database in the non-volatile memory of the main control unit.

[0080] During the online adaptive phase, operating condition features can be extracted. Parameters such as ionization discharge power (P), air inlet flow rate (Q), temperature (T) of low-temperature plasma activated water, and pH value of low-temperature plasma activated water are collected in real time. Through a lightweight Siamese network model combining 1D-CNN and LSTM with less than 30kB of parameters, temporal features characterizing the current system operating state are extracted.

[0081] Then, the decision parameters are fine-tuned, the network backbone is frozen, and only the weights of the last layer fully connected components are quickly fine-tuned for 5-10ms, outputting the operating condition drift compensation amount. (V, f, Q), where V represents the ionization discharge power, f represents the ionization discharge frequency, and Q represents the air inlet flow rate.

[0082] Furthermore, during the adaptive operation process, the operating condition drift compensation amount is... (V, f, Q) are superimposed onto the corresponding mode points in the offline Pareto front to generate real-time optimal operating point parameters adapted to actual working conditions. , Indicates the optimal ionization discharge power. Indicates the optimal ionization discharge frequency. This indicates the optimal air intake flow rate.

[0083] In one possible implementation, in the human-machine interaction and output interface, the user can select the working mode (such as "high-efficiency sterilization" or "energy-saving maintenance") through the touch interface. The system completes the entire process of "table lookup-fine-tuning-output" within a very short delay (≤1ms), calls the pre-stored optimal process parameters, and sends them to the control system as a new control target to achieve accurate decision-making based on the working condition.

[0084] In one possible implementation, the adaptive fuzzy PID execution layer in the intelligent closed-loop cooperative control system can be used to achieve highly robust closed-loop control. The adaptive fuzzy PID controller takes the concentration deviation e(k) and its rate of change ec(k) as inputs, with its universe of discourse normalized to [-6, 6]; it performs inference based on 49 Mamdani-type IF-THEN fuzzy rules, and outputs the PID parameter correction (…). K p , K i , K d The domain is [-3, 3]. The PID parameters are tuned online and control commands are output in 50ms cycles to adjust the high-voltage power supply (for controlling ionization discharge power and optimal ionization discharge frequency) and the fan (for controlling air intake flow) in real time, stabilizing the system at the target operating point. This layer self-calibrates the baseline PID parameters every 30 seconds based on error statistics to ensure optimal control performance throughout the entire lifecycle.

[0085] In this way, the actuator can control the low-temperature plasma activated water preparation reactor in real time by adjusting the high-voltage power supply and the fan. Based on the data detected in real time by the sensor array, the concentration estimate of the active substance is determined through the soft measurement layer of the physical information neural network in the intelligent closed-loop collaborative control system, thereby enabling closed-loop control of the high-voltage power supply and the fan.

[0086] In one possible implementation, Figure 7 This is a schematic diagram of the low-temperature plasma activated water preparation system provided by the present invention, as shown below. Figure 7As shown, the system includes: an air drying chamber 701, an air filter 702, a fan 703, a plasma generator 704, a gas-liquid mixing tank 705, a pH sensor 706, an active substance concentration sensor 707, and a temperature sensor 708. Its workflow is as follows: Driven by the fan 703, air first enters the air drying chamber 701, undergoes dehydration via molecular sieve adsorption, and then passes through the air filter 702 for secondary dust removal and purification. The dried and clean gas is then transported to the plasma generator 704, which uses an array of high-voltage electrodes (18kV) to achieve tip discharge. Through a non-uniform strong electric field, it triggers an electron avalanche effect, highly ionizing the gas and exciting it to form a low-temperature plasma. Finally, the plasma, rich in high-energy electrons, ions, excited-state molecules, and free radicals, is introduced into the gas-liquid mixing tank 705 through stainless steel pipes. The gas-liquid mixing tank 705 integrates the pH sensor 706, the active substance concentration sensor 707, and the temperature sensor 708, which can monitor the key parameters of the plasma-activated water in real time.

[0087] It should be noted that during the air intake process, ambient air is delivered into the processing channel via a high-pressure fan, ensuring a stable initial air supply. In the primary drying stage, moisture is removed by a molecular sieve adsorption module, and the dew point temperature can be controlled below -40℃. In the secondary filtration stage, an H13-grade HEPA filter is used to intercept particles larger than or equal to 0.3μm, achieving a filtration efficiency of 99.97%. Furthermore, during plasma excitation, the plasma generator is equipped with an array of high-voltage electrodes. The 18KV high voltage generates a non-uniform strong electric field through tip discharge, triggering electron avalanche, which in turn highly ionizes and excites the gas inside the generator, forming low-temperature plasma. During gas-liquid mixing, the plasma gas is directly introduced into the water through a stainless steel gas pipe, allowing for natural gas-liquid mixing. After quality verification, the gas is temporarily stored in a 304 stainless steel buffer tank and finally discharged through a sterile valve.

[0088] In one possible implementation, the air intake flow rate (0.5-1.2m³) can be monitored in real time through parameter monitoring and intelligent control. 3 The system measures key indicators such as the flow rate ( / min), temperature of the low-temperature plasma activated water (25±1℃), and concentration of active substances (200-500ppm), and transmits this data to the intelligent closed-loop collaborative control system. Based on the deviation between the concentration value estimated by soft sensing and the target value, the system uses an adaptive fuzzy PID algorithm to calculate and adjust the high-voltage power supply output and fan flow rate in real time within a 50ms cycle, achieving closed-loop stable control of the activated water components.

[0089] For example, as shown in Table 1, the performance indicators of the low-temperature plasma active water preparation method provided by the present invention and the traditional method for preparing low-temperature plasma active water are compared.

[0090] Table 1

[0091] In this embodiment, a two-stage air pretreatment system, a gas-liquid mixing monitoring system, and an intelligent closed-loop collaborative control system jointly achieve a 40% improvement in the stability of plasma-activated water components and a 62% (or 71%) reduction in energy consumption per unit area. In particular, this intelligent system enables fully autonomous optimization and precise control of the entire production process, improving steady-state control accuracy to within ±2%, mode switching response time to less than 2 seconds, and further reducing overall system energy consumption, thus completely solving the stability and control challenges in the activated water preparation process.

[0092] In one possible implementation, Figure 8 This is a schematic diagram of the structural cross-sectional view of the plasma generator provided by the present invention, as shown below. Figure 8 As shown, the plasma generator includes a high-voltage power supply 801 and high-voltage electrodes 802. The plasma generator internally houses the high-voltage power supply 801 and multiple sets of high-voltage electrodes 802. The high-voltage power supply 801 provides 18KV high-voltage power to the high-voltage electrodes 802. The outer wall and internal star-shaped components of the high-voltage electrodes 802 are respectively connected to the positive and negative terminals of the high-voltage power supply 801. Discharge occurs through the tip of the internal star-shaped components, breaking down the air passing through the channels, completing gas corona discharge, and generating plasma gas.

[0093] In one possible implementation, Figure 9 This is a schematic diagram of the changes in the concentration of active substances and pH value with preparation time provided by the present invention, as shown in the figure. Figure 9 As shown, taking NO3- as an example, 4L of tap water was used as the raw water. The concentration of NO3-N in the raw water was 4.334ppm, and the pH value was 7.95. A high-voltage 18KV gas corona treatment was performed in a 230L gas corona treatment space. A 304 stainless steel sealed container was used as the gas-liquid mixing tank. After a preparation time of 4 hours and 45 minutes, the concentration of plasma-activated water reached 28.03ppm as NO3-N and 124.0265ppm as NO3-. The stainless steel container was used, and the treatment was carried out at room temperature. After being left open at 5 degrees Celsius for 15 hours and 15 minutes, the PAW concentration was measured as 25.79 ppm as NO3-N and 114.115 ppm as NO3-. Then, the process was continued for another 8 hours and 45 minutes according to the original plan. The final concentration of the plasma-activated water was 95.12 ppm as NO3-N and 420.885 ppm as NO3-. The final pH value of the plasma-activated water was 2.95, and the water temperature was maintained at 24-25 degrees Celsius throughout the process.

[0094] The low-temperature plasma activated water preparation apparatus provided by the present invention is described below. The low-temperature plasma activated water preparation apparatus described below can be referred to in correspondence with the low-temperature plasma activated water preparation method described above.

[0095] Figure 10 This is a schematic diagram of the low-temperature plasma activated water preparation device provided by the present invention, as shown below. Figure 10 As shown, the low-temperature plasma activated water preparation device includes the following modules: processing module 1001, mixing module 1002, monitoring module 1003, and control module 1004; Processing module 1001 is used to ionize the pretreated air to obtain low-temperature plasma; The mixing module 1002 is used to mix low-temperature plasma with water to obtain low-temperature plasma active water, which includes active substances. Monitoring module 1003 is used to monitor the real-time concentration of active substances in low-temperature plasma activated water; The control module 1004 is used to adjust the ionization treatment parameters based on the deviation between the real-time concentration of the active substance and the preset target concentration, so as to obtain low-temperature plasma active water with an active substance concentration that meets the preset target concentration.

[0096] According to the low-temperature plasma activated water preparation apparatus provided by the present invention, the processing module 1001 is further used for: Air is introduced into a drying chamber for drying, resulting in dried air. The drying chamber is used to reduce the humidity of the air to a preset level. The dried air is introduced into a filter for filtration to obtain pre-treated air. The filter is used to filter particles with a diameter larger than a preset size.

[0097] According to the present invention, a low-temperature plasma activated water preparation device, the processing module 1001, is specifically used for: The pretreated air is ionized by a plasma generator to obtain low-temperature plasma. The plasma generator includes an array of electrodes with nitrided surfaces.

[0098] According to the low-temperature plasma active water preparation device provided by the present invention, the processing module 1001 is further used to: ionize water by a plasma generator to obtain ionized water; The mixing module 1002 is also used to mix low-temperature plasma with ionized water to obtain low-temperature plasma activated water.

[0099] According to the present invention, a low-temperature plasma activated water preparation device includes a monitoring module 1003, which is specifically used for: Real-time acquisition of monitoring parameters, including at least one of the following: air temperature, air humidity, light intensity, ionization discharge power, ionization discharge duration, air inlet flow rate, temperature of low-temperature plasma active water, pH value of low-temperature plasma active water, and conductivity of low-temperature plasma active water. Based on monitoring parameters, the real-time concentration of active substances in low-temperature plasma activated water is determined.

[0100] According to the present invention, a low-temperature plasma activated water preparation device includes a control module 1004, which is specifically used for: Based on the deviation between the real-time concentration of the active substance and the preset target concentration, the optimal ionization treatment parameters are determined. The optimal ionization treatment parameters include at least one of the following: optimal ionization discharge power, optimal ionization discharge frequency, and optimal air introduction flow rate. The pretreated air is ionized using optimal ionization parameters to obtain low-temperature plasma.

[0101] Figure 11 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 11 As shown, the electronic device may include a processor 1110, a communications interface 1120, a memory 1130, and a communication bus 1140. The processor 1110, communications interface 1120, and memory 1130 communicate with each other via the communication bus 1140. The processor 1110 can call logic instructions in the memory 1130 to execute a method for preparing low-temperature plasma activated water. This method includes: ionizing pretreated air to obtain low-temperature plasma; mixing the low-temperature plasma with water to obtain low-temperature plasma activated water, which includes active substances; monitoring the real-time concentration of the active substances in the low-temperature plasma activated water; and adjusting the ionization parameters based on the deviation between the real-time concentration of the active substances and a preset target concentration to obtain low-temperature plasma activated water with an active substance concentration that meets the preset target concentration.

[0102] Furthermore, the logical instructions in the aforementioned memory 1130 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0103] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the low-temperature plasma activated water preparation method provided by the above methods. The method includes: ionizing pretreated air to obtain low-temperature plasma; mixing the low-temperature plasma with water to obtain low-temperature plasma activated water, wherein the low-temperature plasma activated water includes active substances; monitoring the real-time concentration of active substances in the low-temperature plasma activated water; and adjusting the ionization treatment parameters based on the deviation between the real-time concentration of active substances and the preset target concentration to obtain low-temperature plasma activated water with an active substance concentration that meets the preset target concentration.

[0104] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements a method for preparing low-temperature plasma activated water provided by the methods described above. The method includes: ionizing pretreated air to obtain low-temperature plasma; mixing the low-temperature plasma with water to obtain low-temperature plasma activated water, the low-temperature plasma activated water including active substances; monitoring the real-time concentration of active substances in the low-temperature plasma activated water; and adjusting ionization parameters based on the deviation between the real-time concentration of active substances and a preset target concentration to obtain low-temperature plasma activated water with an active substance concentration that meets the preset target concentration.

[0105] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0106] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of various embodiments or some parts of embodiments.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preparing low-temperature plasma activated water, characterized in that, include: The pretreated air is ionized to obtain low-temperature plasma; The low-temperature plasma is mixed with water to obtain low-temperature plasma activated water, which includes active substances. Monitor the real-time concentration of the active substance in the low-temperature plasma activated water; Based on the deviation between the real-time concentration of the active substance and the preset target concentration, the ionization treatment parameters are adjusted to obtain the low-temperature plasma active water with the concentration of the active substance meeting the preset target concentration.

2. The method for preparing low-temperature plasma activated water according to claim 1, characterized in that, The method further includes: Air is introduced into a drying chamber for drying to obtain dried air. The drying chamber is used to reduce the humidity of the air to a preset humidity. The dried air is introduced into a filter for filtration to obtain the pre-treated air. The filter is used to filter particulate matter with a particle size larger than a preset size.

3. The method for preparing low-temperature plasma activated water according to claim 1 or 2, characterized in that, The process of ionizing the pretreated air to obtain low-temperature plasma includes: The pretreated air is ionized by a plasma generator to obtain the low-temperature plasma. The plasma generator includes an array of electrodes, the surface of which is nitrided.

4. The method for preparing low-temperature plasma activated water according to claim 3, characterized in that, The method further includes: Water is ionized using the plasma generator to obtain ionized water. The low-temperature plasma is mixed with the ionized water to obtain the low-temperature plasma activated water.

5. The method for preparing low-temperature plasma activated water according to claim 1 or 2, characterized in that, The monitoring of the real-time concentration of the active substance in the low-temperature plasma activated water includes: The monitoring parameters are acquired in real time, including at least one of the following: air temperature, air humidity, light intensity, ionization discharge power, ionization discharge duration, air inlet flow rate, temperature of the low-temperature plasma active water, pH value of the low-temperature plasma active water, and conductivity of the low-temperature plasma active water. Based on the monitoring parameters, the real-time concentration of the active substance in the low-temperature plasma activated water is determined.

6. The method for preparing low-temperature plasma activated water according to claim 1 or 2, characterized in that, The adjustment of ionization treatment parameters based on the deviation between the real-time concentration of the active substance and the preset target concentration includes: Based on the deviation between the real-time concentration of the active substance and the preset target concentration, the optimal ionization treatment parameters are determined. The optimal ionization treatment parameters include at least one of the following: optimal ionization discharge power, optimal ionization discharge frequency, and optimal air introduction flow rate. The pretreated air is ionized based on the optimal ionization parameters to obtain the low-temperature plasma.

7. A low-temperature plasma activated water preparation device, characterized in that, include: Processing module, mixing module, monitoring module, and control module; The processing module is used to ionize the pretreated air to obtain low-temperature plasma; The mixing module is used to mix the low-temperature plasma with water to obtain low-temperature plasma activated water, wherein the low-temperature plasma activated water includes active substances; The monitoring module is used to monitor the real-time concentration of the active substance in the low-temperature plasma activated water; The control module is used to adjust the ionization treatment parameters based on the deviation between the real-time concentration of the active substance and the preset target concentration, so as to obtain the low-temperature plasma active water with the concentration of the active substance meeting the preset target concentration.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the low-temperature plasma activated water preparation method as described in any one of claims 1 to 6.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the low-temperature plasma activated water preparation method as described in any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the low-temperature plasma activated water preparation method as described in any one of claims 1 to 6.

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