A concentration detection method and system for a hydrogen peroxide sterilization system

Abstract

The present application provides a concentration detection method and system for a hydrogen peroxide sterilization system, which relates to the technical field of hydrogen peroxide concentration detection. The method collects absorbance data at a preset characteristic wavelength during color development, determines the concentration equilibrium constraint when correcting the current concentration in the hydrogen peroxide sterilization chamber through the absorbance data and the conditioned environmental parameters in the sterilization chamber, determines the fitted concentration information between the extreme value change degrees of the multi-salt solution at constant humidity and dew point equilibrium based on the color development mutual interference deviation, synchronously couples the fitted concentration information, and obtains the coupling compensation trend when different concentrations are colored in the hydrogen peroxide sterilization chamber; generates the color development registration index when the equivalent concentration of the hydrogen peroxide solution produces a color development peak offset based on the concentration equilibrium constraint and the coupling compensation trend, and performs a collaborative judgment. The present application can dynamically compensate the color development signal of the hydrogen peroxide solution under the synergistic influence of multiple salt ions and constant humidity and dew point equilibrium to improve the stability of concentration detection in the sterilization chamber.

Description

Technical Field

[0001] The present application relates to the technical field of hydrogen peroxide concentration detection, and more specifically, to a concentration detection method and system for a hydrogen peroxide sterilization system. Background Art

[0002] Hydrogen peroxide concentration detection refers to the use of optical colorimetric reaction, characteristic wavelength absorbance measurement and multi-parameter environmental monitoring technology to collect the colorimetric signal of hydrogen peroxide solution or gas in the sterilization chamber in real time through a specific spectral detection device, and combine the concentration equilibrium constraint model and coupling compensation trend to perform multi-dimensional correction on the measured signal, thereby achieving accurate quantitative determination of the concentration of hydrogen peroxide in different spatial locations and time periods.

[0003] However, existing concentration detection systems for hydrogen peroxide sterilization systems suffer from slow response to concentration changes in complex environments characterized by high humidity, high salt content, and multiple ions, low color sensitivity, and an inability to compensate for environmental disturbances in real time. This often results in color peak offsets and concentration misjudgments, making it difficult to accurately control the actual hydrogen peroxide concentration within the sterilization chamber, thus impacting sterilization safety and efficiency. Therefore, the industry faces the challenge of dynamically compensating the color signal of the hydrogen peroxide solution under the synergistic influence of multiple salt ions and constant humidity and dew point equilibrium to improve the stability of concentration detection within the sterilization chamber. Summary of the Invention

[0004] The present application provides a concentration detection method and system for a hydrogen peroxide sterilization system, which can dynamically compensate for the color development signal of the hydrogen peroxide solution under the synergistic influence of multiple salt ions and constant humidity dew point balance, so as to improve the stability of concentration detection in the sterilization chamber.

[0005] In a first aspect, the present application provides a concentration detection method for a hydrogen peroxide sterilization system, the concentration detection method comprising the following steps:

[0006] Ultraviolet light of a specific wavelength is used to excite the hydrogen peroxide solution to produce free color information, and a color capture solution is injected into the sterilization chamber at the same time;

[0007] collecting the free color development information and absorbance data at a preset characteristic wavelength when the color development capture solution is developing color, and determining a concentration equilibrium constraint when correcting the current concentration of hydrogen peroxide in the sterilization chamber based on the absorbance data and the state parameter of the controlled environment in the sterilization chamber;

[0008] Determining the color development mutual interference deviation during dynamic calibration of a multi-salt solution, determining fitting concentration information between the extreme value change degrees of the multi-salt solution at constant humidity dew point equilibrium based on the color development mutual interference deviation, and synchronously coupling the fitting concentration information to obtain coupling compensation trends when different concentrations are developed in a hydrogen peroxide sterilization chamber;

[0009] A color registration index is generated when the equivalent concentration of the hydrogen peroxide solution produces a color peak shift according to the concentration balance constraint and the coupling compensation trend, and the concentration in the hydrogen peroxide sterilization chamber is collaboratively determined by the color registration index.

[0010] In this embodiment, the free color development information refers to the intermediate information with specific absorption characteristics generated in the hydrogen peroxide solution after ultraviolet light excitation.

[0011] In this embodiment, the color development capture solution refers to a solution containing a chemical reagent that specifically reacts with the hydrogen peroxide intermediate.

[0012] In this embodiment, collecting the free color development information and the absorbance data at the preset characteristic wavelength when the color development capture solution is performed specifically includes:

[0013] fusing the free color development information and the color development capture solution to initiate a color development reaction;

[0014] When performing a colorimetric reaction, set the absorbance measurement device to a preset characteristic wavelength;

[0015] Collect absorbance data at the preset characteristic wavelength.

[0016] In this embodiment, the concentration balance constraint refers to a correction restriction condition when the hydrogen peroxide concentration is dynamically adjusted.

[0017] In this embodiment, determining the color interference deviation during dynamic calibration of a multi-salt solution specifically includes:

[0018] Prepare multiple combined calibration solution samples containing target salt ions and potential interfering salt ions, and perform dynamic color development reaction;

[0019] Synchronously measuring absorbance data of the plurality of combined calibration solution samples at characteristic wavelengths, and recording corresponding salt ion combination information;

[0020] The color development mutual interference deviation during dynamic calibration of a multi-salt solution is determined according to the absorbance data and the salt ion combination information.

[0021] In this embodiment, the fitting concentration information is synchronously coupled to obtain the coupling compensation trend when different concentrations of hydrogen peroxide are developed in the sterilization chamber, specifically including:

[0022] Establishing a concentration-environment coupling matrix based on the fitted concentration information and the synchronously collected sterilization chamber environmental parameters;

[0023] The concentration-environment coupling matrix is ​​used to analyze the cooperative modulation rules of color development parameters under different hydrogen peroxide concentration gradients;

[0024] A coupling compensation trend of the color development reaction in the hydrogen peroxide sterilization chamber is generated based on the cooperative modulation rule.

[0025] In this embodiment, the coupling compensation trend refers to a concentration correction trajectory dynamically generated according to the coordinated modulation rules of real-time concentration information and environmental parameters.

[0026] In this embodiment, the color registration index for generating the equivalent concentration of the hydrogen peroxide solution according to the concentration balance constraint and the coupling compensation trend when the color peak shift occurs specifically includes:

[0027] Determining compensation relationship attributes when color peak shifts according to the concentration balance constraint;

[0028] determining color response information of hydrogen peroxide solution at different equivalent concentrations according to the coupling compensation trend;

[0029] The color registration index when the equivalent concentration of the hydrogen peroxide solution produces a color peak shift is determined by using the compensation relationship attribute and the color response information.

[0030] In a second aspect, the present application provides a concentration detection system for a hydrogen peroxide sterilization system, for performing a concentration detection method for a hydrogen peroxide sterilization system, the concentration detection system comprising:

[0031] The color marking module is used to use ultraviolet light of a specific wavelength to excite the hydrogen peroxide solution to produce free color information, and at the same time inject a color capture solution into the sterilization chamber;

[0032] a concentration correction module, configured to collect the free color development information and absorbance data at a preset characteristic wavelength when the color development capture solution is developing color, and determine a concentration equilibrium constraint when correcting the current concentration of hydrogen peroxide in the sterilization chamber based on the absorbance data and the conditioned environment parameter in the sterilization chamber;

[0033] A synchronous coupling module is used to determine the color development mutual interference deviation during dynamic calibration of a multi-salt solution, determine the fitted concentration information between the extreme value change degrees of the multi-salt solution at constant humidity dew point equilibrium based on the color development mutual interference deviation, and perform synchronous coupling on the fitted concentration information to obtain the coupling compensation trend when different concentrations are developed in the hydrogen peroxide sterilization chamber;

[0034] The detection and judgment module is used to generate a color registration index when the equivalent concentration of the hydrogen peroxide solution produces a color peak shift according to the concentration balance constraint and the coupling compensation trend, and then use the color registration index to collaboratively judge the concentration in the hydrogen peroxide sterilization chamber.

[0035] The technical solutions provided by the embodiments disclosed in this application have the following beneficial effects:

[0036] Ultraviolet light of a specific wavelength is used to excite a hydrogen peroxide solution to generate free color information, while a color capture solution is simultaneously injected into the sterilization chamber. The free color information and absorbance data at a preset characteristic wavelength during color development of the color capture solution are collected, and a concentration equilibrium constraint for correcting the current concentration of hydrogen peroxide in the sterilization chamber is determined using the absorbance data and a modulated environmental parameter in the sterilization chamber. The color mutual interference deviation during dynamic calibration of a multi-salt solution is determined, and based on the color mutual interference deviation, fitted concentration information between the extreme value variation degrees of the multi-salt solution at constant humidity dew point equilibrium is determined. The fitted concentration information is synchronously coupled to obtain a coupling compensation trend for color development at different concentrations in the hydrogen peroxide sterilization chamber. A color registration index for the equivalent concentration of the hydrogen peroxide solution when generating a color peak shift is generated based on the concentration equilibrium constraint and the coupling compensation trend. The concentration in the hydrogen peroxide sterilization chamber is then collaboratively determined using the color registration index.

[0037] It can be seen from this that in the present application, the multi-dimensional correction accuracy of the color development signal of the hydrogen peroxide solution can be improved under the premise that the color development signal is prone to offset and interference; wherein, the hydrogen peroxide solution is excited by ultraviolet light of a specific wavelength to generate free color development information, and the color development capture solution is injected into the sterilization chamber at the same time, which can efficiently excite and capture the free color development signal corresponding to the hydrogen peroxide molecules in a complex cavity environment, realize sensitive and rapid detection of the solution reaction state, and improve the real-time and spatial distribution coverage of the initial color development response; by determining the concentration equilibrium constraint when correcting the current concentration in the hydrogen peroxide sterilization chamber, the peroxide can be dynamically corrected in combination with the color development data and the cavity environment state. Hydrogen concentration can be accurately determined by the color matching index, so as to achieve balanced control and refined determination of concentration distribution, avoid detection errors caused by local concentration anomalies, and improve the accuracy of concentration monitoring; by determining the coupling compensation trend of different concentration color development in the hydrogen peroxide sterilization chamber, the color development deviation in a multi-salt and high-humidity environment can be effectively corrected, the actual concentration change trajectory can be accurately fitted, and a dynamic compensation trend can be generated to ensure the stability of concentration determination under complex sterilization conditions; the concentration in the hydrogen peroxide sterilization chamber is collaboratively determined by the color matching index, which can form a dynamic color calibration mechanism based on multi-dimensional parameters, correct the color development peak offset in real time, and achieve high-precision collaborative determination of the hydrogen peroxide concentration in the sterilization chamber.

[0038] In summary, the technical solution adopted in this application can dynamically compensate the color signal of the hydrogen peroxide solution under the synergistic influence of multiple salt ions and constant humidity dew point balance, so as to improve the stability of concentration detection in the sterilization chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0040] Figure 1 is an exemplary flow chart of a concentration detection method for a hydrogen peroxide sterilization system provided in the present application;

[0041] Figure 2 is a schematic diagram of a process for determining concentration equilibrium constraints according to the present application;

[0042] Figure 3 is a schematic diagram of a process for determining fitted concentration information provided in this application;

[0043] Figure 4 This is a module structure diagram of a concentration detection system of a hydrogen peroxide sterilization system provided in this application. DETAILED DESCRIPTION

[0044] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] The present application provides a concentration detection method and system for a hydrogen peroxide sterilization system. The core of the method and system is to utilize ultraviolet light of a specific wavelength to excite a hydrogen peroxide solution to generate free color information, while simultaneously injecting a color capture solution into a sterilization chamber. The method collects absorbance data at a preset characteristic wavelength during color development of the free color information and the color capture solution. The method then determines a concentration equilibrium constraint for correcting the current concentration of the hydrogen peroxide sterilization chamber using the absorbance data and a modulated environmental parameter within the sterilization chamber. The method also determines a color interfering deviation during dynamic calibration of a multi-salt solution. Based on the color interfering deviation, fitting concentration information between the extreme value variations of the multi-salt solution at constant humidity dew point equilibrium is determined. The fitting concentration information is synchronously coupled to obtain a coupling compensation trend for color development at different concentrations within the hydrogen peroxide sterilization chamber. Based on the concentration equilibrium constraint and the coupling compensation trend, a color registration index is generated when the equivalent concentration of the hydrogen peroxide solution generates a color peak shift. The color registration index is then used to collaboratively determine the concentration within the hydrogen peroxide sterilization chamber.

[0046] Example 1: In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods. Figure 1 As shown in FIG. 1 , this figure is an exemplary flow chart of a concentration detection method for a hydrogen peroxide sterilization system according to this embodiment of the present application, wherein the concentration detection method comprises the following steps:

[0047] In step S1, ultraviolet light of a specific wavelength is used to excite the hydrogen peroxide solution to generate free color information, and a color capture solution is injected into the sterilization chamber at the same time.

[0048] In a specific implementation, the use of ultraviolet light of a specific wavelength to excite a hydrogen peroxide solution to generate free color information can be achieved by installing an ultraviolet light source in the sterilization chamber, selecting a 254-nanometer ultraviolet light source or a short-wavelength ultraviolet light source suitable for hydrogen peroxide excitation as the irradiation source. This ultraviolet light source is projected directly onto the surface of the hydrogen peroxide solution within the chamber via an optical fiber located in the chamber's top or sidewall. Continuous irradiation causes the hydrogen peroxide molecules in the solution to decompose into reactive oxygen free radicals, which further generate intermediates with color characteristics. These intermediates are then used as the free color information. In other embodiments, other methods for determining the free color information may also be used, and are not limited here.

[0049] It should be noted that, in the present application, free color information refers to the intermediate information with specific absorption characteristics generated in the hydrogen peroxide solution after ultraviolet light excitation.

[0050] In addition, in a specific implementation, the injection of the color-developing capture solution into the sterilization chamber can be achieved in the following manner, namely: the color-developing capture solution containing a metal complexing agent (such as ferric chloride or molybdate) is evenly sprayed into the chamber in the form of a fine mist through a spray head or an ultrasonic atomizer to ensure that it is in full contact with the intermediate produced by hydrogen peroxide to form a stable and detectable color-developing product.

[0051] It should be noted that, in the present application, the color development capture solution refers to a solution containing a chemical reagent that specifically reacts with the hydrogen peroxide intermediate.

[0052] In step S2, the free color development information and the absorbance data at a preset characteristic wavelength when the color development capture solution is color developed are collected, and the concentration equilibrium constraint when the current concentration in the hydrogen peroxide sterilization chamber is corrected is determined based on the absorbance data and the adjusted environmental state parameters in the sterilization chamber.

[0053] In this embodiment, the collection of the free color development information and the absorbance data at the preset characteristic wavelength when the color development capture solution is performed can be achieved by the following steps:

[0054] fusing the free color development information and the color development capture solution to initiate a color development reaction;

[0055] When performing a colorimetric reaction, set the absorbance measurement device to a preset characteristic wavelength;

[0056] Collect absorbance data at the preset characteristic wavelength.

[0057] In a specific implementation, ultraviolet light is first used to excite the sterilization chamber to generate free color information, namely, intermediate molecules with specific absorption characteristics produced by the decomposition of hydrogen peroxide. Subsequently, a color capture solution is sprayed into the chamber in an aerosol or micro-mist state using a spray system (such as a high-precision micro-spray nozzle or ultrasonic atomizer). This allows the color reagent in the capture solution to fully contact and chemically react with the intermediates in the free color information, forming a color product with a specific color. A fiber optic spectrometer or online optical absorption measurement module is then placed outside the chamber, connected to the interior of the chamber via an optical window (typically made of quartz or Teflon film) to form an optical path. During the color reaction, one or more characteristic wavelengths (such as 340 nanometers, 405 nanometers, or other wavelengths customized for the specific dye) are selected based on the spectral characteristics of the hydrogen peroxide color product. The detection wavelength parameters of the spectrometer are then set to these characteristic wavelengths, fixing its detection range. This completes the setting of the preset characteristic wavelengths. Finally, after completing the detection wavelength setting, start the sampling function of the spectrometer or absorbance measurement module in real time, perform continuous sampling in seconds or milliseconds, record the absorbance value at the target characteristic wavelength, and form time series data, which is used as the absorbance data at the preset characteristic wavelength.

[0058] It should be noted that in this application, the preset characteristic wavelength refers to a fixed wavelength selected in advance for detection in the spectral measurement equipment based on the unique absorption peak position of the color-developed product; the absorbance measurement equipment refers to a device that can detect the absorbance signal of the solution within a specific wavelength range; the absorbance data refers to the absorption intensity of the incident light measured by the solution at the preset characteristic wavelength position.

[0059] Preferably, in this embodiment, the concentration equilibrium constraint when the current concentration in the hydrogen peroxide sterilization chamber is corrected is determined by the absorbance data and the state parameter of the sterilization chamber, referring to Figure 2 As shown in FIG, this figure is a schematic diagram of a process for determining a concentration equilibrium constraint in some embodiments of the present application. In this embodiment, determining the concentration equilibrium constraint can be implemented using the following steps:

[0060] In step S21, the initial concentration value of hydrogen peroxide at each monitoring point in the cavity is determined based on the absorbance data;

[0061] In step S22, the parameters of the conditioned environment in the sterilization chamber are determined;

[0062] In step S23, the concentration adjacent data of the current concentration correction in the hydrogen peroxide sterilization chamber is determined according to the initial hydrogen peroxide concentration value;

[0063] In step S24, the concentration equilibrium constraint when the current concentration in the hydrogen peroxide sterilization chamber is corrected is determined by using the conditioned environment parameter and the concentration neighboring data.

[0064] In a specific implementation, multiple monitoring points are first set up in the sterilization chamber and fiber optic spectrum detection is installed. Each monitoring point is connected to the chamber's optical window or embedded detection window. By setting a preset characteristic wavelength, absorbance data is collected in real time and input into an established absorbance-concentration linear or nonlinear calibration model (generated based on laboratory calibration solutions) to calculate the initial hydrogen peroxide concentration at each monitoring point. Next, environmental detection sensors, including temperature, humidity, and pressure sensors, are deployed within the chamber. Each sensor measures the temperature, relative humidity, and pressure data at the current point in real time. The data measured by the sensors in real time is used as the conditioned environmental parameter. In other embodiments, other methods can also be used to determine the conditioned environmental parameter, which is not limited here. Then, by comparing the concentration differences between different monitoring points and analyzing the concentration gradients at each monitoring point, neighboring data groups with concentration values ​​close to the target monitoring point are extracted. The extracted neighboring data groups are selected based on both spatial distribution (i.e., physical proximity) and numerical distribution (i.e., concentration proximity). These extracted neighboring data groups serve as the concentration neighboring data for correcting the current concentration in the hydrogen peroxide sterilization chamber. Finally, the conditioned environmental parameters and concentration neighboring data are input into the concentration correction model. The concentration correction model is based on a multivariate regression method and adapts to the effects of temperature, humidity, and pressure on the volatility and decomposition rate of hydrogen peroxide. At the same time, the local concentration gradient of the neighboring data is combined to realize the correction of the initial concentration value. The concentration result corrected by the concentration correction model is used as the concentration equilibrium constraint when correcting the current concentration in the hydrogen peroxide sterilization chamber.

[0065] It should be noted that, in this application, the regulated environmental parameters refer to the external environmental state parameters in the cavity that affect the expression of the hydrogen peroxide concentration; the initial hydrogen peroxide concentration value refers to the first step estimated concentration calculated by the calibration model based on the real-time absorbance data; the concentration neighboring data refers to the data set that is close to the concentration value of the target monitoring point in the concentration space; the concentration equilibrium constraint refers to the correction restriction condition when the hydrogen peroxide concentration is dynamically adjusted.

[0066] In step S3, the color development mutual interference deviation during dynamic calibration of the multi-salt solution is determined, and fitting concentration information between the extreme value change degrees of the multi-salt solution at constant humidity dew point equilibrium is determined based on the color development mutual interference deviation. The fitting concentration information is synchronously coupled to obtain the coupling compensation trend when different concentrations are colored in the hydrogen peroxide sterilization chamber.

[0067] In this embodiment, the color development mutual interference deviation during dynamic calibration of a multi-salt solution can be determined by the following steps:

[0068] Prepare multiple combined calibration solution samples containing target salt ions and potential interfering salt ions, and perform dynamic color development reaction;

[0069] Synchronously measuring absorbance data of the plurality of combined calibration solution samples at characteristic wavelengths, and recording corresponding salt ion combination information;

[0070] The color development mutual interference deviation during dynamic calibration of a multi-salt solution is determined according to the absorbance data and the salt ion combination information.

[0071] In specific implementation, first, under laboratory conditions, according to a predetermined formula, multi-salt solution samples containing target salt ions (such as sodium chloride, potassium sulfate, and phosphate) and potentially interfering salt ions (such as carbonate, nitrate, calcium, and magnesium) are prepared. Each combined solution is proportioned according to the extreme concentration range that may occur in the sterilization chamber. For example, the salt concentration gradient can be set to 0.01 mol / L, 0.05 mol / L, and 0.1 mol / L to cover the actual operating range. These samples are placed in reaction vessels, and a color capture solution (such as a solution containing a metal chelating agent or organic dye) of the same concentration and volume is added. Dynamic conditions are maintained using a constant temperature water bath, magnetic stirrer, or ultrasonic oscillation to ensure that the color development reaction proceeds under simulated actual environmental dynamics. Then, during the color development reaction, a fiber optic spectrometer or a multi-channel optical absorption measurement device is used to continuously measure the absorbance of each sample at a preset characteristic wavelength (e.g., 340 nm or 405 nm) and record the absorbance change curve. During each sample measurement cycle, the system automatically records the salt ion combination, ion concentration, measurement time point, and corresponding environmental information such as temperature and pH value contained in the sample. The absorbance change curve and all environmental information are used as salt ion combination information, which will not be repeated here. Finally, a multivariate correlation analysis is performed on the absorbance data and the salt ion combination information. The individual and interactive influence factors of different salt ions on the absorbance change can be extracted through multiple linear regression analysis, partial least squares regression (PLSR), or support vector regression methods to form a color development mutual interference deviation model. The color development mutual interference deviation model uses salt ion concentration and its combination as input variables, and the corresponding absorbance deviation from the theoretical salt-free color development baseline value as output, and the output result is used as the color development mutual interference deviation.

[0072] It should be noted that in this application, dynamic color development reaction refers to a color development reaction carried out under dynamic conditions of stirring, shaking and constant temperature; color development mutual interference deviation refers to the absorbance error caused by salt ions on the color development reaction in a multi-salt environment; salt ion combination information refers to all salt ion types and their corresponding concentrations contained in each multi-salt solution sample.

[0073] Preferably, in this embodiment, the fitting concentration information between the extreme value variation degrees of the multi-salt solution at constant humidity dew point equilibrium is determined according to the color mutual interference deviation, referring to Figure 3 As shown in FIG. 1 , this figure is a schematic diagram of a process for determining fitting concentration information in some embodiments of the present application. In this embodiment, determining fitting concentration information can be achieved by using the following steps:

[0074] In step S31, absorbance variation data at characteristic wavelengths within a preset time series are collected under constant humidity and dew point equilibrium conditions;

[0075] In step S32, a concentration fitting characteristic of a solution sample of a multi-salt solution at constant humidity dew point equilibrium is determined according to the color development mutual interference deviation;

[0076] In step S33, determining the mutual interference correction boundary when the sample concentration changes according to the absorbance change data and the concentration fitting characteristics;

[0077] In step S34, fitting concentration information between extreme value variation degrees of the multi-salt solution at constant humidity dew point equilibrium is determined according to the mutual interference correction boundary.

[0078] In a specific implementation, first, in a sealed test chamber, the humidity in the chamber is set to a constant humidity state through a precision environmental control system, and the temperature is controlled to be stable at the corresponding dew point temperature. Then, a multi-salt solution sample containing different salt ion combinations is prepared, and after adding a color capture solution, the color reaction is initiated. During the color reaction, a fiber optic spectrometer or a multi-band optical detection module is used to collect absorbance change data at a preset characteristic wavelength (such as 340 nanometers or 405 nanometers) at a frequency of once per second. In other embodiments, the collection frequency can also be determined according to the actual sampling time, which is not limited here. Next, the absorbance change data is compared with a pre-established color mutual interference deviation database, wherein the color mutual interference deviation database contains deviation models under different salt ion combinations and concentrations. Then, through multivariate regression analysis or surface fitting methods, the color curve characteristic parameters of each solution sample under constant humidity and dew point equilibrium conditions, such as the absorbance rise rate, maximum absorbance value, and average absorbance in the plateau phase, are extracted, and the color curve characteristic parameters are used as concentration fitting features. Then, the real-time absorbance change data and concentration fitting characteristics are synchronously input into the concentration deviation correction calculation module; the concentration deviation correction calculation module can calculate the absorbance deviation at each time point by comparing the sample with the standard color curve under ideal salt-free conditions, and perform dynamic fitting in combination with the concentration fitting characteristics, ultimately obtaining the upper and lower limits of the deviation for each sample during the concentration change process, and using these upper and lower limits as the mutual interference correction boundaries. Finally, the mutual interference correction boundaries and the concentration fitting characteristics are used to perform concentration dynamic fitting calculations. Through a multivariable constrained optimization algorithm (such as weighted least squares fitting or a fitting method based on nonlinear optimization), the concentration curve is fitted point by point within the mutual interference correction boundary range to obtain the dynamic change information of the concentration of the multi-salt solution sample under constant humidity dew point equilibrium conditions. The extreme points of the concentration curve extracted after fitting (such as the maximum concentration value, the minimum concentration value, and the plateau value) are used as the fitted concentration information between the extreme value change degrees, which will not be repeated here.

[0079] It should be noted that, in this application, constant humidity dew point balance refers to the relative humidity and temperature in the cavity jointly maintaining a stable balance under dew point conditions; absorbance change data refers to the curve data of the absorbance change of the colorimetric solution continuously measured at a specific wavelength over time; concentration fitting characteristics refer to the parameter set of the dynamic change law of the concentration of the complex salt solution; the mutual interference correction boundary refers to the concentration error range derived based on real-time absorbance data and fitting characteristics; the fitted concentration information refers to the concentration change data obtained by aggregating the absorbance data, concentration fitting characteristics and mutual interference correction boundaries during the dynamic fitting process.

[0080] In this embodiment, the fitting concentration information is synchronously coupled to obtain the coupling compensation trend when different concentrations of hydrogen peroxide are developed in the sterilization chamber. The following steps can be used to achieve this:

[0081] Establishing a concentration-environment coupling matrix based on the fitted concentration information and the synchronously collected sterilization chamber environmental parameters;

[0082] The concentration-environment coupling matrix is ​​used to analyze the cooperative modulation rules of color development parameters under different hydrogen peroxide concentration gradients;

[0083] A coupling compensation trend of the color development reaction in the hydrogen peroxide sterilization chamber is generated based on the cooperative modulation rule.

[0084] In the specific implementation, first, the fitting concentration information (including the time series, extreme values, and concentration characteristic values ​​in the stable stage of the concentration) and the real-time collected sterilization chamber environmental parameters (such as temperature, humidity, and pressure) are synchronously recorded and stored in a multi-dimensional matrix structure. That is, each time point is used as an index, and the corresponding fitting concentration information and the numerical value of the sterilization chamber environmental parameters are stored together in the matrix unit to form a complete concentration-environment coupling matrix. For example, the columns of the matrix can be the concentration values ​​of the fitting concentration information, the rows can be different combinations of environmental parameters in the sterilization chamber environmental parameters, and the matrix elements are the corresponding color absorbance response values. Then, based on the established concentration-environment coupling matrix, color development parameter characteristics are extracted under different concentration gradients (e.g., low concentration, medium concentration, and high concentration ranges). These color development parameter characteristics include absorbance change rate, color development completion time, maximum absorbance value, and stable value fluctuation range. Multiple regression analysis, principal component analysis, or machine learning methods (e.g., support vector machines or decision trees) are then used to identify the specific modulation effects of each environmental parameter on the color development parameters at different concentration levels, extract their quantitative relationships, and form a synergistic modulation rule for the color development parameters under different hydrogen peroxide concentration gradients. Finally, the synergistic modulation rule is connected to real-time monitoring data to dynamically calculate the expected color development response characteristic values ​​(e.g., expected maximum absorbance, response rate) under the current chamber environmental conditions. The deviation of the actual color development response parameters collected in real time is compared with the model prediction value, and a time series compensation value is generated. This time series compensation value is used as a coupling compensation curve, which can be used to correct the concentration of the hydrogen peroxide solution. For example, when the ambient humidity suddenly increases, causing the color development rate to decrease, the deviation in the concentration calculation is automatically compensated according to the cooperative modulation rule, and the corrected concentration value is output.

[0085] It should be noted that, in this application, the sterilization chamber environmental parameters refer to the indicators that affect the color development reaction and temperature, humidity, and pressure under the concentration state in the chamber; the concentration-environment coupling matrix refers to a matrix composed of multidimensional variables with the fitted concentration information and the sterilization chamber environmental parameters; the collaborative modulation rule refers to the logical relationship in which the environmental parameters jointly affect the color development parameters under different concentration conditions; the coupling compensation trend refers to the concentration correction trajectory dynamically generated according to the collaborative modulation rules of real-time concentration information and environmental parameters.

[0086] In step S4, a color registration index is generated when the equivalent concentration of the hydrogen peroxide solution produces a color peak shift according to the concentration balance constraint and the coupling compensation trend, and the concentration in the hydrogen peroxide sterilization chamber is collaboratively determined by the color registration index.

[0087] In this embodiment, the color registration index when generating the color peak shift based on the equivalent concentration of the hydrogen peroxide solution according to the concentration balance constraint and the coupling compensation trend can be achieved by the following steps:

[0088] Determining compensation relationship attributes when color peak shifts according to the concentration balance constraint;

[0089] determining color response information of hydrogen peroxide solution at different equivalent concentrations according to the coupling compensation trend;

[0090] The color registration index when the equivalent concentration of the hydrogen peroxide solution produces a color peak shift is determined by using the compensation relationship attribute and the color response information.

[0091] In specific implementation, the concentration data of adjacent monitoring points are weighted averaged according to the concentration equilibrium constraint to form a correction value for the overall concentration of the cavity. This correction value is then compared with the peak value of the monitored color curve to extract the degree of peak offset. The difference between the peak value and the equilibrium concentration is calculated. The correction factor required for the color signal is then calculated based on the difference between the peak value and the equilibrium concentration. This correction factor is used as the compensation relationship attribute when the color peak offset occurs. The environmental parameters and concentration information collected in real time are then input into the coupled compensation model to calculate key color parameters such as the color peak value, absorbance change rate, and reaction completion time corresponding to the equivalent concentration at each moment. The obtained key color parameters are used as the color response information of the hydrogen peroxide solution at different equivalent concentrations. Finally, the compensation relationship attributes are fused and calculated with the color response information to establish a color registration index generation rule. The color registration index generation rule adjusts the color response characteristic value with the compensation relationship function to achieve quantitative correction of the color peak offset, forming a set of numerical indicators, such as the corrected peak position, correction coefficient, and correction time window. The compensation relationship model is called through the algorithm module, and the offset correction amount is calculated according to the real-time color response data. The final output result is used as the color registration index when the equivalent concentration of hydrogen peroxide solution produces a color peak offset.

[0092] It should be noted that, in this application, the equivalent concentration produces a color peak shift, which refers to the phenomenon that the absorbance peak of the color reaction of the hydrogen peroxide solution is offset from the ideal state under the influence of the actual concentration and the coupling of the environment; the compensation relationship attribute refers to the correction factor extracted after comparing the concentration equilibrium constraint and the color peak shift; the color response information refers to the correspondence between the key parameter set and the color intensity in the color reaction process; the color registration index refers to the parameter set used to describe and correct the color peak shift.

[0093] In addition, in a specific implementation, the color registration index can be used to collaboratively determine the concentration in the hydrogen peroxide sterilization chamber. This can be achieved by inputting the real-time collected color absorbance data into the registration index calculation module, and quantitatively correcting the absorbance peak offset using the color registration index to obtain a corrected color signal. Subsequently, the corrected color signal is subjected to a multidimensional fusion analysis in combination with the concentration equilibrium constraint and the coupling compensation trend to form a comprehensive determination result of the hydrogen peroxide concentration in the sterilization chamber. The color registration index can also be used as a verification basis for the final concentration judgment. By dynamically fitting the real-time detected color signal curve and comparing it one by one with the generated color registration index, the current concentration offset is automatically calculated, and the collaborative determination result of the hydrogen peroxide concentration in the sterilization chamber is output in real time, that is, the hydrogen peroxide injection amount is automatically adjusted or the sterilization cycle is maintained.

[0094] It can be seen from this that in the present application, the multi-dimensional correction accuracy of the color development signal of the hydrogen peroxide solution can be improved under the premise that the color development signal is prone to offset and interference; wherein, the hydrogen peroxide solution is excited by ultraviolet light of a specific wavelength to generate free color development information, and the color development capture solution is injected into the sterilization chamber at the same time, which can efficiently excite and capture the free color development signal corresponding to the hydrogen peroxide molecules in a complex cavity environment, realize sensitive and rapid detection of the solution reaction state, and improve the real-time and spatial distribution coverage of the initial color development response; by determining the concentration equilibrium constraint when correcting the current concentration in the hydrogen peroxide sterilization chamber, the peroxide can be dynamically corrected in combination with the color development data and the cavity environment state. Hydrogen concentration can be accurately determined by the color matching index, so as to achieve balanced control and refined determination of concentration distribution, avoid detection errors caused by local concentration anomalies, and improve the accuracy of concentration monitoring; by determining the coupling compensation trend of different concentration color development in the hydrogen peroxide sterilization chamber, the color development deviation in a multi-salt and high-humidity environment can be effectively corrected, the actual concentration change trajectory can be accurately fitted, and a dynamic compensation trend can be generated to ensure the stability of concentration determination under complex sterilization conditions; the concentration in the hydrogen peroxide sterilization chamber is collaboratively determined by the color matching index, which can form a dynamic color calibration mechanism based on multi-dimensional parameters, correct the color development peak offset in real time, and achieve high-precision collaborative determination of the hydrogen peroxide concentration in the sterilization chamber.

[0095] In summary, the technical solution adopted in this application can dynamically compensate the color signal of the hydrogen peroxide solution under the synergistic influence of multiple salt ions and constant humidity dew point balance, so as to improve the stability of concentration detection in the sterilization chamber.

[0096] Example 2: This application provides a concentration detection system for a hydrogen peroxide sterilization system, referring to Figure 4 As shown in FIG. 1 , this figure is a module structure diagram of a concentration detection system of a hydrogen peroxide sterilization system according to this embodiment of the present application, and the concentration detection system includes:

[0097] The color marking module 100 is used to use ultraviolet light of a specific wavelength to excite the hydrogen peroxide solution to produce free color information, and at the same time inject a color capture solution into the sterilization chamber;

[0098] a concentration correction module 200 for collecting the free color development information and absorbance data at a preset characteristic wavelength when the color development capture solution is developing color, and determining a concentration equilibrium constraint for correcting the current concentration of hydrogen peroxide in the sterilization chamber based on the absorbance data and the conditioned state parameters in the sterilization chamber;

[0099] A synchronous coupling module 300 is configured to determine the color development mutual interference deviation during dynamic calibration of a multi-salt solution, determine fitting concentration information between the extreme value changes of the multi-salt solution at constant humidity dew point equilibrium based on the color development mutual interference deviation, and perform synchronous coupling on the fitting concentration information to obtain coupling compensation trends when different concentrations are developed in the hydrogen peroxide sterilization chamber;

[0100] The detection and determination module 400 is used to generate a color registration index when the equivalent concentration of the hydrogen peroxide solution produces a color peak shift based on the concentration balance constraint and the coupling compensation trend, and then use the color registration index to collaboratively determine the concentration in the hydrogen peroxide sterilization chamber.

[0101] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0102] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program. The program can be stored in a computer-readable storage medium, including a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disc storage, magnetic disk storage, or magnetic tape storage, or any other computer-readable medium capable of carrying or storing data.

[0103] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

Claims

1. A concentration detection method for a hydrogen peroxide sterilization system, characterized in that: The concentration detection method comprises the following steps: Ultraviolet light of a specific wavelength is used to excite the hydrogen peroxide solution to produce free color information, and a color capture solution is injected into the sterilization chamber at the same time; Collecting the free color development information and absorbance data at a preset characteristic wavelength when the color development capture solution is developing color, and determining a concentration equilibrium constraint for correcting the current concentration of hydrogen peroxide in the sterilization chamber based on the absorbance data and a modulated environmental parameter in the sterilization chamber, wherein the modulated environmental parameter refers to an external environmental state parameter in the chamber that may affect the manifestation of the hydrogen peroxide concentration, and the concentration equilibrium constraint refers to a correction restriction condition for the dynamic adjustment of the hydrogen peroxide concentration; Determining the color development mutual interference deviation during dynamic calibration of a multi-salt solution, determining fitting concentration information between the extreme value change degrees of the multi-salt solution at constant humidity dew point equilibrium based on the color development mutual interference deviation, and synchronously coupling the fitting concentration information to obtain coupling compensation trends when different concentrations are developed in a hydrogen peroxide sterilization chamber; generating a color registration index when the color peak shift occurs when the equivalent concentration of the hydrogen peroxide solution is generated according to the concentration equilibrium constraint and the coupling compensation trend, and then collaboratively determining the concentration in the hydrogen peroxide sterilization chamber based on the color registration index; Among them, determining the color interference deviation during dynamic calibration of multi-salt solutions specifically includes: Prepare multiple combined calibration solution samples containing target salt ions and potential interfering salt ions, and perform dynamic color development reaction; Synchronously measuring absorbance data of the plurality of combined calibration solution samples at characteristic wavelengths, and recording corresponding salt ion combination information; Determining the color interference deviation during dynamic calibration of a multi-salt solution according to the absorbance data and the salt ion combination information; The synchronous coupling of the fitted concentration information to obtain the coupling compensation trend when different concentrations of hydrogen peroxide are colored in the sterilization chamber specifically includes: Establishing a concentration-environment coupling matrix based on the fitted concentration information and the synchronously collected sterilization chamber environmental parameters; The concentration-environment coupling matrix is ​​used to analyze the cooperative modulation rules of color development parameters under different hydrogen peroxide concentration gradients; Generating a coupling compensation trend of the color development reaction in the hydrogen peroxide sterilization chamber based on the synergistic modulation rule, wherein the coupling compensation trend refers to a concentration correction trajectory dynamically generated according to the synergistic modulation rule of real-time concentration information and environmental parameters; The color registration index when generating the equivalent concentration of the hydrogen peroxide solution according to the concentration balance constraint and the coupling compensation trend to produce the color peak shift specifically includes: Determining compensation relationship attributes when color peak shifts according to the concentration balance constraint; determining color response information of hydrogen peroxide solution at different equivalent concentrations according to the coupling compensation trend; The color registration index when the equivalent concentration of the hydrogen peroxide solution produces a color peak shift is determined by using the compensation relationship attribute and the color response information, wherein the color registration index refers to a parameter set used to describe and correct the color peak shift.

2. The concentration detection method of a hydrogen peroxide sterilization system according to claim 1, characterized in that: The free color development information refers to the intermediate information with specific light absorption characteristics generated in the hydrogen peroxide solution after ultraviolet light excitation.

3. The concentration detection method of a hydrogen peroxide sterilization system according to claim 1, characterized in that: The color development and capture solution refers to a solution containing a chemical reagent that specifically reacts with the hydrogen peroxide intermediate.

4. The concentration detection method of a hydrogen peroxide sterilization system according to claim 1, characterized in that: Collecting the free color development information and the absorbance data at the preset characteristic wavelength when the color development capture solution is color developed specifically includes: fusing the free color development information and the color development capture solution to initiate a color development reaction; When performing a colorimetric reaction, set the absorbance measurement device to a preset characteristic wavelength; Collect absorbance data at the preset characteristic wavelength.

5. A concentration detection system for a hydrogen peroxide sterilization system, used to perform a concentration detection method for a hydrogen peroxide sterilization system according to any one of claims 1 to 4, characterized in that: The concentration detection system comprises: The color marking module is used to use ultraviolet light of a specific wavelength to excite the hydrogen peroxide solution to produce free color information, and at the same time inject a color capture solution into the sterilization chamber; a concentration correction module, configured to collect the free color development information and absorbance data at a preset characteristic wavelength when the color development capture solution is developing color, and determine a concentration equilibrium constraint when correcting the current concentration of hydrogen peroxide in the sterilization chamber based on the absorbance data and the conditioned environment parameter in the sterilization chamber; A synchronous coupling module is used to determine the color development mutual interference deviation during dynamic calibration of a multi-salt solution, determine the fitted concentration information between the extreme value change degrees of the multi-salt solution at constant humidity dew point equilibrium based on the color development mutual interference deviation, and perform synchronous coupling on the fitted concentration information to obtain the coupling compensation trend when different concentrations are developed in the hydrogen peroxide sterilization chamber; The detection and judgment module is used to generate a color registration index when the equivalent concentration of the hydrogen peroxide solution produces a color peak shift according to the concentration balance constraint and the coupling compensation trend, and then use the color registration index to collaboratively judge the concentration in the hydrogen peroxide sterilization chamber.

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