A disinfection device for processing and producing medical antiviral non-woven fabric

Abstract

The present application relates to medical non-woven fabric production disinfection technology, disclose a kind of medical antiviral non-woven fabric processing and production is used disinfection device, the device includes irradiation box and the ultraviolet light source assembly installed in it, also include online disinfection self-adapting control system.The system is by light source side efficiency evaluation module, medium attenuation evaluation module, target surface effective irradiation evaluation module, operation adaptation degree evaluation module and closed-loop control execution module constitute;Each module calculates light source side efficiency coefficient, transmission medium attenuation coefficient, target surface effective irradiation coefficient and working condition adaptation coefficient, closed-loop control execution module is according to the required effective irradiation intensity and the above coefficient, by closed-loop irradiation control model obtains target ultraviolet irradiation intensity, and the ultraviolet light source output intensity is carried out real-time closed-loop regulation.The present application can self-adapting compensation light source attenuation, medium absorption, material difference and operation fluctuation influence on disinfection effect, ensure that disinfection performance is stable and efficient.

Description

Technical Field

[0001] This invention pertains to disinfection technology in the production of medical nonwoven fabrics, and particularly relates to a disinfection device for the processing and production of medical antiviral nonwoven fabrics. Background Technology

[0002] Medical antiviral nonwoven fabrics are a core material for medical protective equipment such as masks and protective clothing, and their disinfection process directly affects the safety and final effectiveness of the products. Ultraviolet (UV) disinfection technology, with its advantages of ease of operation, no chemical residue, and environmental friendliness, has become an indispensable disinfection method in continuous production lines for medical nonwoven fabrics. However, in practical industrial applications, existing UV disinfection devices face multiple complex challenges. First, UV lamps inevitably experience output intensity decay during long-term operation, mainly due to the natural aging of the amalgam material inside the lamp. Simultaneously, the surface of the quartz sleeve protecting the lamp is highly susceptible to the adhesion of dust, oil, and other contaminants from the production environment, leading to a continuous decrease in light transmittance. Furthermore, if the lamp's operating wall temperature deviates from its optimal operating range due to changes in heat dissipation conditions or fluctuations in ambient temperature, it will significantly reduce the effective output efficiency of UV light. Second, water vapor molecules in the air environment inside the irradiation chamber strongly absorb UV light of specific wavelengths, especially under high temperature and humidity conditions, where increased water vapor concentration significantly weakens the energy transmitted by UV light. Ozone molecules generated during UV irradiation of the air also absorb UV light, and their accumulation further exacerbates energy attenuation along the transmission path. Furthermore, there are batch-to-batch variations in the substrate of medical nonwoven fabrics, and their ultraviolet transmittance varies due to fluctuations in raw material composition, production processes, and thickness. Simultaneously, the fabric's travel speed during production line operation may fluctuate due to unstable mechanical transmission, and the actual distance between the lamp and the fabric surface may shift due to deviations in the tension control system or mechanical vibrations. These factors collectively lead to uneven distribution of irradiation dose across the fabric width. The currently prevalent fixed-power output control method cannot monitor and dynamically compensate for these multi-dimensional changes in real time, making it difficult to maintain a stable and ideal disinfection effect. This can result in insufficient dose to effectively inactivate viruses, or excessive irradiation that damages the physical structure or antiviral coating of the nonwoven fabric, severely impacting product consistency and reliability. Summary of the Invention

[0003] The purpose of this invention is to provide a disinfection device for the processing and production of medical antiviral nonwoven fabrics, in order to solve the above-mentioned problems.

[0004] This invention is implemented as follows: a disinfection device for the processing and production of medical antiviral nonwoven fabrics includes an irradiation chamber, in which an ultraviolet light source assembly is installed. It also includes an online disinfection adaptive control system, comprising: a light source-side efficiency evaluation module for acquiring the irradiance attenuation rate and wall temperature of the ultraviolet lamp, as well as the transmittance of the quartz sleeve, and calculating the light source-side efficiency coefficient characterizing the effective radiation output capability of the ultraviolet light source; a medium attenuation evaluation module for acquiring the water vapor number density and ozone number density in the air within the irradiation chamber, and calculating the transmission medium attenuation coefficient characterizing the degree of ultraviolet light transmission attenuation in the air medium; and a target surface effective irradiation evaluation module for acquiring the nonwoven fabric... The system includes: a UV transmittance of the fabric substrate and a dose deviation along the width of the irradiated area; a target surface effective irradiance coefficient characterizing the degree of effective utilization of UV light by the target surface; an operation adaptability assessment module for obtaining the irradiation distance offset between the UV lamp and the nonwoven fabric surface and the nonwoven fabric running speed, and calculating the operating condition adaptability coefficient characterizing the degree of adaptability between the current operating state and the system capability based on the light source side efficiency coefficient and the transmission medium attenuation coefficient; and a closed-loop control execution module for obtaining the required effective irradiance intensity, obtaining the target UV irradiance intensity through a closed-loop irradiance control model based on the target surface effective irradiance coefficient and the operating condition adaptability coefficient, and performing closed-loop adjustment of the output intensity of the UV light source based on the target UV irradiance intensity.

[0005] A further technical solution involves the following operation flow of the light source-side performance evaluation module: obtaining the current irradiance attenuation rate and wall temperature of the ultraviolet lamp, as well as the transmittance of the quartz sleeve; and substituting the current wall temperature of the ultraviolet lamp into the formula. To obtain the lamp wall temperature compatibility index, among which, The wall temperature of the ultraviolet lamp tube. For optimal operating temperature, To account for temperature tolerance, the irradiance attenuation rate of the UV lamp, the transmittance of the quartz sleeve, and the lamp wall temperature compatibility index are multiplied together to obtain the light source-side efficiency coefficient. .

[0006] A further technical solution involves obtaining the irradiance attenuation rate of the ultraviolet lamp and the transmittance of the quartz sleeve as follows: obtaining the current irradiance of the ultraviolet lamp and the transmitted light intensity of the quartz sleeve; comparing the current irradiance of the ultraviolet lamp with the nominal irradiance of the new lamp at the same distance to obtain the irradiance attenuation rate of the ultraviolet lamp; and comparing the current transmitted light intensity of the quartz sleeve with the reference transmitted light intensity of the quartz sleeve in a clean state to obtain the transmittance of the quartz sleeve.

[0007] A further technical solution involves the following operation flow of the medium attenuation assessment module: obtaining the number density of water vapor molecules and the number density of ozone molecules in the air inside the irradiation chamber; and substituting the number density of water vapor molecules and the number density of ozone molecules into the formula. Obtain the attenuation coefficient of the transmission medium. ,in, This represents the absorption cross section of water vapor molecules to 253.7 nm ultraviolet light. The number density of water vapor molecules. This represents the absorption cross section of ozone molecules to 253.7 nm ultraviolet light. Ozone number density This is the distance from the center of the lamp tube to the fabric surface.

[0008] A further technical solution involves obtaining the water vapor number density and ozone number density as follows: First, obtain the current temperature, relative humidity percentage, ozone concentration, and air pressure within the irradiation chamber. Then, based on the current temperature within the irradiation chamber, calculate the maximum number of water vapor molecules that the air can hold at that temperature using the saturated vapor pressure formula. Next, multiply this by the relative humidity percentage to obtain the actual water vapor number density. According to the ideal gas law, the total number of gas molecules per unit volume is inversely proportional to temperature and directly proportional to air pressure. Finally, multiply the ozone concentration (as a volume fraction) by the total number density to obtain the ozone number density.

[0009] A further technical solution involves the following operation flow of the target surface effective irradiation evaluation module: obtaining the ultraviolet transmittance of the nonwoven fabric substrate and the dose deviation of the irradiated area along the width direction; and substituting the ultraviolet transmittance of the nonwoven fabric substrate and the dose deviation of the irradiated area along the width direction into the formula. Obtain the effective irradiance coefficient of the target surface ,in, The ultraviolet transmittance of the nonwoven fabric substrate. This represents the dose deviation along the width of the irradiated area.

[0010] A further technical solution involves obtaining the ultraviolet transmittance of the nonwoven fabric substrate and the dose deviation of the irradiated area along the width direction as follows: The transmitted light intensity and incident light intensity of the nonwoven fabric substrate, as well as the measured irradiance at multiple points along the width direction and its average value, are obtained; the ratio of the current transmitted light intensity to the incident light intensity is processed to obtain the ultraviolet transmittance of the nonwoven fabric substrate; the measured irradiance at multiple points along the width direction and its average value are substituted into the formula... , obtain For amplitude dose deviation, where, This represents the measured irradiance at multiple points along the width direction. This is the average value.

[0011] A further technical solution involves the following operation flow of the operation adaptability evaluation module: obtaining the irradiation distance offset between the ultraviolet lamp and the nonwoven fabric surface, and the running speed of the nonwoven fabric; substituting the current irradiation distance offset and the running speed of the nonwoven fabric into the formula. Obtain the comprehensive dose rate perturbation factor ,in, Nominal irradiation distance, This is the irradiation distance offset. The nominal operating speed, The nonwoven fabric operating speed is used; the comprehensive dose rate perturbation factor, the light source side efficiency coefficient, and the transmission medium attenuation coefficient are substituted into the formula. Obtain the working condition adaptation coefficient ,in, As a sensitivity modulator, The efficiency coefficient on the light source side. The attenuation coefficient of the transmission medium. This is the overall dose rate perturbation factor.

[0012] A further technical solution is that the closed-loop irradiation control model is as follows:

[0013] in, The target ultraviolet radiation intensity, For the required effective irradiation intensity, The effective irradiance coefficient of the target surface. This is the working condition adaptation coefficient.

[0014] A further technical solution is provided, wherein the ultraviolet light source assembly includes an ultraviolet lamp, a quartz sleeve, a reflector, and a power regulator. The ultraviolet lamp is installed inside the irradiation chamber, the quartz sleeve is fitted over the ultraviolet lamp, and the reflector is installed on the side of the ultraviolet lamp facing away from the non-woven fabric to reflect ultraviolet rays onto the surface of the non-woven fabric, thereby improving irradiation utilization. The power regulator is electrically connected to the ultraviolet lamp and is used to adjust the output power of the ultraviolet lamp according to the instructions of the control system.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention evaluates the energy loss of the entire ultraviolet disinfection process through multi-module collaborative assessment and dynamically compensates the output intensity based on a closed-loop irradiation control model. It can adaptively compensate for various disturbances such as light source aging, environmental humidity, differences in non-woven fabric transmittance, and fluctuations in operating speed, ensuring that the non-woven fabric surface always receives a stable and effective disinfection dose, and significantly improving the reliability and consistency of the disinfection effect.

[0016] 2. This invention avoids the damage to the non-woven fabric substrate and antiviral coating caused by excessive irradiation under the traditional fixed power output method, while optimizing energy utilization efficiency, extending the service life of the ultraviolet lamp, and achieving a balance between energy saving and high-quality disinfection. Attached Figure Description

[0017] Figure 1This invention provides a schematic diagram of the structure of a disinfection device for the processing and production of medical antiviral nonwoven fabrics; Figure 2 The flowchart illustrates the operation of the online disinfection adaptive control system provided by this invention.

[0018] In the attached diagram: 1. Irradiation chamber; 2. Fabric inlet; 3. Fabric outlet; 4. Ultraviolet lamp; 5. Quartz sleeve; 6. Reflector; 7. Power regulator. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0021] like Figure 1 and Figure 2 As shown in the figure, a disinfection device for processing and producing medical antiviral nonwoven fabric according to an embodiment of the present invention includes an irradiation chamber 1. An ultraviolet light source assembly is installed inside the irradiation chamber 1. The irradiation chamber 1 is a space for accommodating the ultraviolet light source assembly and disinfecting the nonwoven fabric with ultraviolet light. An inlet 2 and an outlet 3 are provided on both sides of the irradiation chamber 1 to allow the nonwoven fabric to continuously enter and leave the disinfection area. At both ends of the irradiation chamber 1, an unwinding mechanism and a winding mechanism are respectively configured to realize the continuous conveying and winding of the nonwoven fabric. The unwinding mechanism and the winding mechanism work together to ensure a stable conveying speed and tension of the nonwoven fabric, which is the basis for achieving uniform irradiation. The device also includes: The online disinfection adaptive control system includes: The light source-side efficiency evaluation module is used to acquire the irradiance attenuation rate and wall temperature of the ultraviolet lamp, as well as the transmittance of the quartz sleeve, and to calculate the light source-side efficiency coefficient, which characterizes the effective radiation output capability of the ultraviolet light source. This module is the primary component of the control system, and its main function is to monitor the health status and actual output capability of the ultraviolet light source in real time. This module can acquire relevant parameters through various methods. For example, by installing a photoelectric sensor near the ultraviolet lamp, the actual irradiance of the ultraviolet lamp can be measured periodically or continuously and compared with the nominal irradiance of a new lamp to estimate the irradiance attenuation rate. The wall temperature of the ultraviolet lamp can be measured using a thermocouple or an infrared temperature sensor. The transmittance of the quartz sleeve can be obtained by placing photosensors on both the inside and outside of the sleeve and measuring the ratio of light intensity passing through the sleeve to incident light intensity. These parameters are input into the evaluation module, and the light source-side efficiency coefficient is calculated using a preset algorithm. This coefficient directly reflects the effective radiation capability of the light source.

[0022] The media attenuation assessment module is used to acquire the number density of water vapor molecules and ozone molecules in the air inside the irradiation chamber, and to calculate the transmission medium attenuation coefficient, which characterizes the degree of attenuation of ultraviolet (UV) transmission in the air medium. This module is responsible for assessing the loss of UV transmission in the air medium. Environmental parameters can be acquired by installing temperature and humidity sensors and ozone concentration sensors inside the irradiation chamber 1. For example, the temperature and humidity sensors can measure the temperature and relative humidity inside the chamber in real time, while the ozone concentration sensor is used to monitor the generation or accumulation of ozone. The data from these sensors is transmitted to the assessment module, which calculates the number density of water vapor molecules and ozone molecules using a preset physical model or empirical formula, and then calculates the transmission medium attenuation coefficient. This coefficient reflects the degree of absorption of UV by the air medium; for example, the coefficient decreases when humidity or ozone concentration is high, indicating increased UV transmission loss.

[0023] The target surface effective irradiance evaluation module is used to acquire the ultraviolet transmittance of the nonwoven fabric substrate and the dose deviation along the width of the irradiated area, and to calculate the target surface effective irradiance coefficient, which characterizes the degree to which ultraviolet light is effectively utilized by the target surface. This module assesses the extent to which ultraviolet light is effectively utilized by the nonwoven fabric substrate. It calculates the ultraviolet transmittance of the nonwoven fabric substrate by placing ultraviolet sensors above and below the nonwoven fabric, measuring the incident light intensity and transmitted light intensity. The dose deviation along the width of the irradiated area can be obtained by placing multiple ultraviolet sensor arrays along the width of the nonwoven fabric, simultaneously measuring the irradiance at different locations, and calculating its uniformity. These data are input into the evaluation module, and the target surface effective irradiance coefficient is calculated using a preset algorithm. This coefficient reflects the absorption efficiency of the nonwoven fabric for ultraviolet light and the uniformity of irradiation. For example, the effective irradiance coefficient will be lower for nonwoven fabrics with high transmittance or for areas with uneven irradiation.

[0024] The operation adaptability evaluation module is used to acquire the irradiation distance offset between the UV lamp and the nonwoven fabric surface and the nonwoven fabric running speed. Based on the light source efficiency coefficient and the transmission medium attenuation coefficient, it calculates the operating condition adaptability coefficient, which characterizes the degree of compatibility between the current operating state and the system capacity. The module comprehensively considers the impact of operating parameters on the disinfection effect. This module can monitor the irradiation distance between the UV lamp and the nonwoven fabric surface in real time using a distance sensor (e.g., a laser rangefinder) installed inside the irradiation chamber 1, and calculate its offset from the nominal distance. The nonwoven fabric running speed can be acquired using an encoder or speed sensor installed on the unwinding or rewinding mechanism. These operating parameters, combined with the light source efficiency coefficient and the transmission medium attenuation coefficient, are input into the evaluation module, and the operating condition adaptability coefficient is calculated using a preset algorithm. This coefficient reflects the degree of matching between the current operating conditions and the overall disinfection capacity of the system; for example, the coefficient will decrease when the irradiation distance is too large or the running speed is too fast.

[0025] The closed-loop control execution module is used to obtain the required effective irradiance intensity and, based on the effective irradiance coefficient of the target surface and the operating condition adaptation coefficient, obtain the target ultraviolet irradiance intensity through a closed-loop irradiance control model. It then performs closed-loop adjustment of the output intensity of the ultraviolet light source according to the target ultraviolet irradiance intensity. This module is the decision-making and execution center of the entire system. First, it receives the required effective irradiance intensity set by the production management system or the user. Then, it takes the effective irradiance coefficient of the target surface and the operating condition adaptation coefficient as input and calculates the target ultraviolet irradiance intensity that the ultraviolet light source needs to output under the current conditions through a preset closed-loop irradiance control model. For example, if the evaluation results show a decrease in light source efficiency, increased medium absorption, high non-woven fabric transmittance, or mismatched operating parameters, the target ultraviolet irradiance intensity will be increased accordingly. Finally, this module sends a command to the power regulator of the ultraviolet light source component to perform closed-loop adjustment of the output intensity of the ultraviolet light source, ensuring that the actual irradiance intensity reaches the target value, thereby maintaining a stable disinfection effect.

[0026] The disinfection device of this application achieves comprehensive, real-time, and dynamic management of the ultraviolet disinfection process through an online disinfection adaptive control system. Traditional disinfection devices typically use fixed power output, which cannot cope with the degradation of the ultraviolet lamp's own performance, the absorption of ultraviolet light by the environmental medium, the differences in the characteristics of non-woven fabric materials, and fluctuations in production line operating parameters. For example, when the ultraviolet lamp ages, the fixed power output of a traditional device will result in insufficient actual disinfection dosage, thus affecting the sterilization effect; similarly, when the ambient humidity increases, ultraviolet light transmission loss increases, and a fixed power output also cannot guarantee disinfection intensity.

[0027] In contrast, this application introduces a light source-side performance evaluation module, which can quantify the effective radiation capacity of the ultraviolet light source in real time, solving the problem that traditional devices cannot detect light source aging. The medium attenuation evaluation module can accurately assess the absorption of ultraviolet light by the environmental medium, making up for the shortcomings of traditional devices that ignore the influence of environmental factors. The target surface effective irradiation evaluation module considers the ultraviolet transmittance and irradiation uniformity of the non-woven fabric substrate, ensuring that ultraviolet light is effectively utilized and avoiding insufficient disinfection or excessive irradiation due to material differences. The operation adaptability evaluation module further incorporates operating parameters such as irradiation distance and operating speed, enabling the system to adapt to the dynamic changes of the production line.

[0028] Finally, the closed-loop control execution module integrates all evaluation results and dynamically adjusts the output intensity of the ultraviolet light source through a closed-loop irradiation control model. This adaptive closed-loop control mechanism enables the disinfection device of this application to maintain the required effective irradiation intensity under various complex and variable production conditions, ensuring stable sterilization effects. This not only solves the problem of unstable disinfection effects in traditional devices but also avoids damage to the antiviral coating and nonwoven fabric physical properties caused by excessive irradiation, significantly improving the quality control level and production efficiency of medical antiviral nonwoven fabric production.

[0029] This application further proposes the following operation flow for the light source side performance evaluation module: The current irradiance attenuation rate, wall temperature, and quartz sleeve transmittance of the UV lamp are obtained. The irradiance attenuation rate of UV lamp 4 refers to the degree of decrease in its output ultraviolet intensity after long-term use. It can be calculated by placing an ultraviolet irradiance sensor near UV lamp 4, periodically measuring its output irradiance, and comparing it with the nominal irradiance of a new lamp, or by estimating it based on the cumulative working time of UV lamp 4 combined with the attenuation curve provided by the manufacturer. The wall temperature refers to the temperature of the outer wall of UV lamp 4, which is a key factor affecting the luminous efficiency of UV lamp 4. It can be measured in real time using a non-contact infrared thermometer, or by directly attaching a contact temperature sensor such as a thermocouple to the lamp wall. The transmittance of the quartz sleeve 5 refers to its ability to transmit ultraviolet light. This transmittance decreases due to surface dust, dirt, or aging. It can be obtained by placing ultraviolet sensors on both the inner and outer sides of the quartz sleeve 5, measuring the ultraviolet light intensity before and after transmission, and calculating the ratio. Alternatively, it can be evaluated through periodic visual or optical inspections of the quartz sleeve 5, combined with empirical data. The optimal operating temperature refers to the ideal wall temperature at which the ultraviolet lamp 4 achieves the highest ultraviolet output efficiency during design and manufacturing. This parameter is usually provided by the manufacturer of the ultraviolet lamp 4 or determined through experimental testing. Temperature tolerance refers to the acceptable range or sensitivity of output efficiency reduction when the wall temperature of the ultraviolet lamp 4 deviates from the optimal operating temperature. This can also be provided by the manufacturer or obtained through experimental testing.

[0030] The methods for obtaining the irradiance attenuation rate of the ultraviolet lamp tube and the transmittance of the quartz sleeve are as follows: The system acquires the current irradiance of the ultraviolet lamp and the transmitted light intensity through the quartz sleeve. Acquiring the current irradiance aims to monitor the actual ultraviolet intensity emitted by the operating ultraviolet lamp 4 in real time, quantifying the lamp's energy output under its current operating condition. This can be achieved by placing one or more ultraviolet irradiance sensors near the ultraviolet lamp 4 within the irradiation chamber 1 to collect real-time irradiance data generated by the ultraviolet lamp 4 on the non-woven fabric surface; alternatively, it can be achieved by monitoring the electrical parameters of the ultraviolet lamp 4, such as current and voltage, and indirectly calculating its irradiance by combining this with a preset lamp characteristic curve. Acquiring the transmitted light intensity through the quartz sleeve is used to measure the actual light intensity after ultraviolet light passes through the quartz sleeve 5, assessing the degree of obstruction or attenuation of ultraviolet light by the quartz sleeve 5. The implementation can be achieved by setting an ultraviolet light intensity sensor on the outside of the quartz sleeve 5, close to the non-woven fabric, to directly measure the ultraviolet light intensity transmitted through the quartz sleeve 5; or, an ultraviolet light intensity sensor can be set inside and outside the quartz sleeve 5, and the transmitted light intensity can be indirectly obtained by comparing the difference between the two.

[0031] The ratio of the current UV lamp irradiance to the nominal irradiance of the new lamp at the same distance is used to obtain the irradiance attenuation rate of the UV lamp. The nominal irradiance of the new lamp at the same distance provides a baseline value of irradiance for the UV lamp 4 under ideal conditions, serving as a reference standard for measuring the current aging degree of the lamp. This can be achieved by obtaining the nominal irradiance data of the UV lamp 4 from its manufacturer at the time of manufacture and correcting it according to the actual installation distance; or by measuring and recording the baseline irradiance of the brand-new UV lamp 4 under the same conditions as the actual working distance before the disinfection device is put into use. This step aims to quantify the degree of decline in the actual output capacity of the UV lamp 4 due to aging, wear, and other factors, providing an intuitive attenuation indicator. This can be achieved by having the processor inside the online disinfection adaptive control system perform a division operation, dividing the real-time acquired current UV lamp irradiance by the preset or measured nominal irradiance of the new lamp; or by using a dedicated signal processing module to convert the two analog signals into digital signals and then calculating the ratio.

[0032] The transmittance of the quartz sleeve is obtained by comparing the current transmitted light intensity with the reference transmitted light intensity of the quartz sleeve in a clean state. The reference transmitted light intensity of the quartz sleeve in a clean state provides a benchmark value for the transmittance performance of the quartz sleeve 5 under ideal conditions, serving as a reference standard for assessing the degree of contamination of the quartz sleeve 5. This can be achieved by obtaining the nominal transmittance data of the quartz sleeve 5 in a clean state from the manufacturer and calculating the reference transmitted light intensity in conjunction with the light source intensity; or by measuring and recording the transmitted light intensity of the quartz sleeve 5 under standard light source illumination before installation or after thorough cleaning. This step aims to quantify the degree of decline in the transmittance performance of the quartz sleeve 5 due to surface contamination, aging, and other factors, providing an accurate transmittance index. The implementation can be achieved by having the processor inside the online disinfection adaptive control system perform a division operation, dividing the real-time acquired current transmitted light intensity of the quartz sleeve by the preset or measured baseline transmitted light intensity under clean conditions; or, the microcontroller integrated in the sensor can perform a preliminary ratio calculation and transmit the result to the main control system.

[0033] Substitute the current wall temperature of the UV lamp into the formula. To obtain the lamp wall temperature compatibility index, among which, The wall temperature of the ultraviolet lamp tube. For optimal operating temperature, To account for temperature tolerance; this step aims to quantify the impact of the wall temperature of UV lamp 4 on its output efficiency. This is achieved by real-time acquisition of the wall temperature of UV lamp 4. The manufacturer's recommended operating temperature and temperature tolerance Substituting into the Gaussian function formula above, a lamp wall temperature adaptation index can be calculated. This index reflects the degree of matching between the current wall temperature and the optimal operating temperature. The closer the value is to 1, the closer the wall temperature is to the optimal operating state, and the higher the lamp output efficiency; conversely, the smaller the value, the further the wall temperature deviates from the optimal operating temperature, and the lower the lamp output efficiency. This quantification allows for a precise expression of the impact of wall temperature on light source efficiency.

[0034] The light source efficiency coefficient is obtained by multiplying the irradiance attenuation rate of the ultraviolet lamp tube, the transmittance of the quartz sleeve, and the lamp tube wall temperature adaptability index. , , A value close to 1 indicates that the lamp output capacity is close to the ideal state, the quartz sleeve is clean, the lamp wall temperature is in the optimal working range, and there is almost no energy loss on the light source side. A value approaching 0 indicates severe lamp aging, severe sleeve contamination, or a significant deviation of the wall temperature from the optimal value, resulting in almost no effective ultraviolet radiation output from the light source side. This step uses multiplication to comprehensively evaluate multiple factors affecting the effective radiation output capability of the light source. The irradiance attenuation rate of the ultraviolet lamp 4 directly reflects the degree of lamp aging, the light transmittance of the quartz sleeve 5 reflects the cleanliness and aging degree of the sleeve, and the lamp wall temperature compatibility index reflects the influence of wall temperature on the lamp's luminous efficiency. Multiplying these three independent but interrelated factors yields a comprehensive light source-side efficiency coefficient. This coefficient is a value between 0 and 1, and it can comprehensively and accurately characterize the actual effective radiation capability of current ultraviolet light sources. When the value approaches 1, it indicates that the UV lamp 4 is in optimal working condition, with low aging, the quartz sleeve 5 is clean, the wall temperature is within the optimal working range, and there is almost no energy loss on the light source side; when When the value approaches 0, it indicates that the UV lamp 4 is severely aged, the quartz sleeve 5 is severely contaminated, or the wall temperature deviates significantly from the optimal value, resulting in the light source side being almost unable to output effective ultraviolet light. This comprehensive evaluation method ensures an accurate grasp of the actual performance of the light source.

[0035] This application's solution refines the operational process of the light source-side performance evaluation module, aiming to more accurately assess the actual effective radiation capability of the ultraviolet light source. In the disinfection device used in the processing and production of medical antiviral nonwoven fabrics, the light source-side performance evaluation module first comprehensively acquires key parameters affecting the output efficiency of the ultraviolet lamp 4, including the irradiance attenuation rate of the ultraviolet lamp 4, real-time wall temperature, transmittance of the quartz sleeve 5, and the optimal operating temperature and temperature tolerance of the ultraviolet lamp 4. Acquiring these parameters is the foundation for subsequent accurate calculations. Subsequently, the system substitutes the real-time measured wall temperature of the ultraviolet lamp 4 into a preset Gaussian function formula, combining the optimal operating temperature and temperature tolerance to calculate a lamp wall temperature adaptation index. This index cleverly quantifies the degree to which the current wall temperature deviates from the optimal operating state, solving the problem that the influence of wall temperature is not accurately considered in traditional solutions. Finally, this lamp wall temperature adaptation index is multiplied by the irradiance attenuation rate of the ultraviolet lamp 4 and the transmittance of the quartz sleeve 5 to obtain the comprehensive light source-side performance coefficient. This product operation logically combines three independent but interconnected factors affecting light source output: lamp aging, sleeve contamination, and wall temperature deviation from optimal values, forming a unified comprehensive evaluation index between 0 and 1. This results in the light source's efficiency coefficient. This approach accurately reflects the actual effective radiation capacity of the ultraviolet light source, providing reliable input data for the online disinfection adaptive control system. In this way, the evaluation of the light source's effectiveness becomes more comprehensive and precise, thereby improving the accuracy and reliability of the entire online disinfection adaptive control system's closed-loop adjustment of the ultraviolet light source's output intensity, ensuring the stability and consistency of the non-woven fabric disinfection effect.

[0036] In one specific implementation, the light source performance evaluation module can be implemented by an embedded controller, for example, using a high-performance microprocessor as the core processing unit. This controller can integrate multiple input interfaces for connecting various sensors. For example, an ultraviolet irradiance sensor can periodically measure the output irradiance of the ultraviolet lamp 4 and transmit the data to the controller. A non-contact infrared temperature sensor can monitor the wall temperature of the ultraviolet lamp 4 in real time and send the temperature data to the controller. Furthermore, miniature ultraviolet photodiodes can be installed on both the inner and outer sides of the quartz sleeve 5 to measure the transmitted light intensity and incident light intensity, thereby evaluating the transmittance of the quartz sleeve 5. Parameters such as the optimal operating temperature and temperature tolerance of the ultraviolet lamp 4 can be pre-stored in the controller's non-volatile memory or configured through a human-machine interface. Once the controller obtains all the necessary parameters, its built-in firmware will execute the above formula calculations. Specifically, the program first calculates the real-time wall temperature... Preset optimal operating temperature and temperature tolerance Substituting into a Gaussian function, the lamp wall temperature adaptation index is calculated. Subsequently, the obtained irradiance attenuation rate, quartz sleeve transmittance, and calculated lamp wall temperature compatibility index were used. By performing multiplication, the final efficiency coefficient of the light source side is obtained. The calculation result can be displayed on the operation interface in real time and used as input for other modules of the online disinfection adaptive control system for subsequent closed-loop adjustment.

[0037] Through the above technical solution, this application can accurately quantify the impact of the UV lamp tube 4 wall temperature on the output efficiency, solving the problem of inaccurate light source efficiency evaluation caused by insufficient consideration of wall temperature factors in traditional disinfection devices. By comprehensively calculating the irradiance attenuation rate of the UV lamp tube 4, the transmittance of the quartz sleeve 5, and the lamp tube wall temperature compatibility index, the obtained light source efficiency coefficient is... This allows for a more comprehensive and accurate reflection of the actual effective radiation capacity of the ultraviolet light source. This precise assessment provides more reliable input data for the online disinfection adaptive control system, enabling the system to more accurately determine the current health status and output potential of the light source. Consequently, in subsequent closed-loop adjustments, the system can more effectively adjust the output intensity of the ultraviolet light source according to the actual situation, ensuring that the disinfection effect of the medical antiviral nonwoven fabric remains at its optimal level. Simultaneously, it avoids unnecessary damage to the nonwoven fabric substrate and antiviral coating caused by excessive irradiation, thus improving the stability and reliability of the disinfection process.

[0038] This application further proposes the following operating procedure for the media attenuation assessment module: The goal of this study is to obtain the number densities of water vapor and ozone molecules in the air inside the irradiation chamber. Specifically, the number densities of water vapor and ozone molecules within irradiation chamber 1 are measured to quantify the two main gaseous components in the environment that absorb ultraviolet (UV) radiation. Water vapor number density refers to the number of water vapor molecules per unit volume of air, while ozone number density refers to the number of ozone molecules per unit volume of air. These two number densities are key parameters that directly reflect the concentrations of water vapor and ozone, and thus influence the degree of UV transmission attenuation. Various methods can be used to obtain these number densities. For example, temperature and humidity sensors and ozone concentration sensors can be installed inside irradiation chamber 1 to monitor the ambient temperature, relative humidity, and ozone concentration in real time. The number densities of water vapor and ozone can then be calculated using pre-defined physical models (such as the ideal gas law and saturated vapor pressure formula). Alternatively, more direct measurement methods can be employed, such as using specific wavelength spectral absorption techniques to measure the attenuation of UV radiation along a specific path to inversely determine the number densities of water vapor and ozone.

[0039] The specific methods for obtaining water vapor molecule number density and ozone molecule number density are as follows: The system acquires the current temperature, relative humidity percentage, ozone concentration, and air pressure inside the irradiation chamber. Acquiring the current temperature inside irradiation chamber 1 refers to real-time monitoring of the air temperature inside chamber 1, which can be achieved by installing temperature sensors such as thermistors, thermocouples, or infrared thermometers inside chamber 1. Acquiring the relative humidity percentage refers to real-time measurement of the ratio of water vapor content in the air inside irradiation chamber 1 to the saturated water vapor content at that temperature, typically using capacitive or resistive humidity sensors. Acquiring the ozone concentration refers to real-time detection of the ozone content in the air inside irradiation chamber 1, which can be achieved using devices such as semiconductor ozone sensors, electrochemical ozone sensors, or ultraviolet absorption ozone sensors. Acquiring the air pressure refers to real-time measurement of the air pressure inside irradiation chamber 1, which can be achieved using pressure sensors such as piezoresistive or capacitive sensors.

[0040] First, based on the current temperature inside the irradiation chamber, calculate the maximum number of water vapor molecules that the air can hold at that temperature (i.e., the number density in the saturated state) using the saturated vapor pressure formula. This saturated vapor pressure formula can be a simplified form of the Clausius-Clapeyron equation, or an empirical formula such as the Tetens formula or the Magnus formula to approximate the saturated vapor pressure. Then, combine this with the ideal gas law to deduce the water vapor number density in the saturated state. Finally, multiply by the relative humidity percentage (expressed as a decimal) to obtain the actual water vapor number density.

[0041] According to the ideal gas law, the total number of gas molecules per unit volume is inversely proportional to temperature and directly proportional to pressure. Using real-time temperature and pressure data, the total number density of all gas molecules within irradiation chamber 1 can be calculated. Finally, by multiplying the real-time ozone concentration (usually expressed as a volume fraction) by the calculated total number density, the ozone number density in the air within irradiation chamber 1 can be accurately obtained.

[0042] Substituting the water vapor molecule number density and ozone molecule number density into the formula Obtain the attenuation coefficient of the transmission medium. , , This indicates no absorption whatsoever (relative humidity percentage is 0% and ozone concentration is 0%). Approaching 0 indicates extremely strong absorption, among which, This represents the absorption cross section of water vapor molecules to 253.7 nm ultraviolet light. The number density of water vapor molecules. This represents the absorption cross section of ozone molecules to 253.7 nm ultraviolet light. Ozone number density The distance from the center of the lamp to the fabric surface is the path length of ultraviolet light as it travels through the medium. This step is based on the Beer-Lambert Law and is used to accurately calculate the attenuation of ultraviolet light as it travels through the air. The formula contains... and These are the absorption cross sections of water vapor molecules and ozone molecules for ultraviolet light at a specific wavelength (e.g., 253.7 nm), respectively. These are known physical constants that characterize the ability of a single molecule to absorb ultraviolet light. This calculation process is typically performed by a processing unit in an online disinfection adaptive control system. This processing unit can be an embedded microcontroller or an industrial computer, which has pre-stored the absorption cross section constant and irradiation distance parameters and performs the corresponding mathematical calculations.

[0043] This application's solution addresses the problem of accurately quantifying transmission attenuation by defining the specific operational flow of the medium attenuation assessment module. First, by acquiring key environmental parameters inside the irradiation chamber 1 in real-time and accurately, and combining this with calculations based on physical principles, the number density of water vapor and ozone molecules affecting ultraviolet (UV) transmission attenuation is dynamically quantified. Specifically, the system continuously monitors the temperature, relative humidity percentage, ozone concentration, and air pressure inside the irradiation chamber 1; these parameters are fundamental to determining the degree of UV absorption by the air medium. Given that water vapor absorption of UV is closely related to temperature and humidity, this solution uses the saturated vapor pressure formula to calculate the maximum number of water vapor molecules that the air can hold at the current temperature, providing a theoretical upper limit for quantifying water vapor content. Based on this, multiplying this maximum value by the real-time measured relative humidity percentage yields the accurate water vapor number density inside the irradiation chamber 1, thus avoiding the ambiguity in the assessment of humidity effects found in traditional methods. Simultaneously, considering that ozone is also an important UV absorption medium, this solution uses the ideal gas law to calculate the total number of gas molecules per unit volume based on real-time temperature and air pressure. Subsequently, by multiplying the real-time monitored ozone concentration (expressed as a volume fraction) by this total molecular number density, the ozone molecular number density can be accurately obtained. This calculation method, based on real-time environmental parameters and a physical model, overcomes the problem of inaccurate molecular number density acquisition caused by dynamic environmental changes in traditional methods. Secondly, substituting these obtained molecular number densities into a specific exponential decay formula, which is based on the absorption cross-sections of water vapor and ozone and the transmission distance from the UV lamp 4 to the non-woven fabric surface, accurately simulates the physical absorption process of 253.7nm ultraviolet light in the air. (Transmission medium attenuation coefficient) The calculation results, with their clearly defined scope and meaning, provide an intuitive and quantitative standard, facilitating the system's dynamic assessment of the impact of environmental changes on ultraviolet transmission. This process enables the online disinfection adaptive control system to calculate the attenuation of ultraviolet light in the air medium in real time and accurately, thus providing reliable input for the closed-loop control execution module. Within the framework of the entire online disinfection adaptive control system, the media attenuation assessment module calculates the transmission medium attenuation coefficient. This will be further used in the operational adaptability assessment module for the working condition adaptability coefficient. The calculation ultimately affects the closed-loop irradiation control model's effect on the target ultraviolet irradiation intensity. The determination of this synergy ensures that the system can dynamically adjust the output intensity of the ultraviolet light source 4 according to real-time environmental conditions, thereby ensuring that the non-woven fabric substrate receives the required effective irradiation intensity and maintains a stable disinfection effect even when water vapor or ozone concentrations fluctuate.

[0044] As a specific implementation method, the above-mentioned technical means can be achieved as follows: First, multiple sensors can be configured inside the irradiation chamber 1 to acquire environmental parameters. For example, high-precision digital temperature sensors, such as DS18B20 or PT100, can be arranged at multiple points inside the irradiation chamber 1, and the overall temperature inside the chamber can be represented by the average or weighted average. The relative humidity sensor can be an integrated temperature and humidity sensor module, such as DHT22 or SHT30, which can simultaneously provide temperature and relative humidity data. The ozone concentration sensor can be an electrochemical sensor, such as the MQ131 series sensor, which has high sensitivity and selectivity and can monitor ozone concentration in real time. The pressure sensor can be a MEMS (Micro-Electro-Mechanical Systems) pressure sensor, such as BMP280, which is small in size and highly accurate. All the data from these sensors can be acquired and processed by a microcontroller (such as an STM32 series microcontroller or ESP32). The microcontroller can pre-store or calculate in real time the constants and coefficients required for the saturated vapor pressure formula and the ideal gas law. After sensor data is transmitted to the microcontroller, the microcontroller first uses the temperature data to call a preset saturated vapor pressure lookup table or calculation function to obtain the saturated water vapor pressure, and then calculates the saturated water vapor number density. This result is then multiplied by the relative humidity percentage data to obtain the actual water vapor number density. Simultaneously, based on the temperature and pressure data, the microcontroller calculates the total number density using the ideal gas law, and then multiplies it by the ozone concentration data to obtain the ozone number density. and The PLC then uses these values ​​along with preset physical constants (such as the absorption cross-section of water vapor for 253.7nm ultraviolet light). The absorption cross section of ozone for 253.7nm ultraviolet light. ) and the distance from the center of UV lamp 4 to the surface of the nonwoven fabric. Substitute into the formula Real-time calculation of transmission medium attenuation coefficient For example, when the humidity or ozone concentration inside irradiation chamber 1 is high, the calculated... The value will decrease accordingly, indicating an increase in ultraviolet transmission attenuation. This calculation result will then be passed to other modules of the online disinfection adaptive control system for subsequent irradiation intensity adjustment.

[0045] Through the above technical solution, the online disinfection adaptive control system can accurately quantify the absorption and attenuation of ultraviolet light by the air medium inside the irradiation chamber 1, thereby overcoming the problem of unstable disinfection effect caused by environmental factors (such as changes in humidity or ozone concentration) in traditional disinfection devices. By acquiring the molecular number density of water vapor and ozone in real time and calculating the attenuation coefficient of the transmission medium using a physical model, the system can accurately assess the energy loss of ultraviolet light along the transmission path. This allows the closed-loop control execution module to dynamically adjust the output intensity of the ultraviolet light source 4 according to the actual medium attenuation, ensuring that the non-woven fabric substrate always receives a stable and sufficient effective ultraviolet dose. Therefore, this solution significantly improves the accuracy and reliability of the disinfection process for medical antiviral non-woven fabrics, avoids insufficient or excessive disinfection due to environmental changes, thereby ensuring product quality and optimizing energy utilization efficiency.

[0046] This application further proposes the following operation flow for the target surface effective irradiation assessment module: To obtain the ultraviolet transmittance of the nonwoven fabric substrate and the dose deviation of the irradiated area along the width direction; The specific methods for obtaining the ultraviolet transmittance of the nonwoven fabric substrate and the dose deviation along the width of the irradiated area are as follows: The transmitted and incident light intensities of the nonwoven fabric substrate, as well as the measured irradiance and its average value at multiple points along the fabric width, are obtained. Incident light intensity refers to the ultraviolet (UV) intensity irradiating the surface of the nonwoven fabric, while transmitted light intensity refers to the UV intensity after penetrating the nonwoven fabric. Various methods can be used to obtain this data. For example, a UV radiometer can be placed above the nonwoven fabric to measure the incident light intensity, and another UV radiometer can be placed at a corresponding position below the nonwoven fabric to measure the transmitted light intensity, ensuring that both radiometers have the same spectral response characteristics and calibration standards. Alternatively, a spectrophotometer or UV transmittance meter can be used, placing the nonwoven fabric sample in its optical path, and measuring the light intensity with and without the nonwoven fabric to obtain the transmitted and incident light intensities, respectively. Furthermore, a reference UV sensor can be fixedly installed above the nonwoven fabric inside the irradiation chamber 1 to monitor the incident light intensity in real time, and a transmitted UV sensor can be installed at a corresponding position below the nonwoven fabric to monitor the transmitted light intensity in real time. Meanwhile, obtaining multi-point measured irradiance and its average value along the fabric width is crucial data for assessing the uniformity of ultraviolet radiation distribution on the nonwoven fabric surface. Multi-point measurements can effectively reflect the differences in irradiance intensity at different locations within the irradiated area. This can be achieved by arranging an array of ultraviolet radiation sensors along the fabric's width (perpendicular to the running direction) on the fabric's running path to collect irradiance data at different locations in real time. These sensors can be fixedly installed inside the irradiation chamber 1 or mounted on a movable scanning mechanism. Another approach is to use a movable ultraviolet radiation sensor to perform multi-point measurements along the nonwoven fabric's width using a lateral scanning method and record the irradiance value at each point.

[0047] The ultraviolet transmittance of the nonwoven fabric substrate is obtained by comparing the current transmitted light intensity with the incident light intensity. This ratio calculation quantifies the nonwoven fabric's ability to transmit ultraviolet light and is an important parameter for evaluating the impact of the nonwoven fabric's own characteristics on the disinfection effect. After receiving the acquired transmitted light intensity and incident light intensity data, the processor in the online disinfection adaptive control system performs a simple division operation, i.e., "transmitted light intensity / incident light intensity," to obtain the ultraviolet transmittance. This process can be performed in real time to adapt to changes in nonwoven fabric batches or materials.

[0048] Substitute the measured irradiance at multiple points along the width direction and its average value into the formula. , obtain Width-width dose deviation characterizes the degree of non-uniformity of irradiation intensity along the width of the fabric. This represents the measured irradiance at multiple points along the width direction. This is the average value, ranging from 0 to 1, where 0 indicates perfect uniformity and 1 indicates extreme non-uniformity. This refers to the number of measurement points. This step uses statistical methods to precisely quantify the non-uniformity of ultraviolet light across the width of the nonwoven fabric, providing a basis for subsequent disinfection effect evaluation and control. The calculation unit in the online disinfection adaptive control system substitutes these data into a given standard deviation formula for calculation. Calculation results... It directly reflects the uniformity of irradiation; the smaller the value, the more uniform it is.

[0049] Substituting the UV transmittance of the nonwoven fabric substrate and the dose deviation of the irradiated area along the width direction into the formula Obtain the effective irradiance coefficient of the target surface , , A value close to 1 indicates that the nonwoven fabric substrate completely absorbs ultraviolet light and the irradiation intensity is evenly distributed in the width direction, and the ultraviolet light is almost completely and effectively utilized by the target surface. A value close to 0 indicates that the nonwoven fabric substrate allows complete transmission of ultraviolet light or that the irradiation intensity is extremely uneven along the width direction, meaning that the ultraviolet light is almost completely unusable by the target surface. The ultraviolet transmittance of the nonwoven fabric substrate. This represents the dose deviation along the width of the irradiated area.

[0050] The target surface effective irradiation evaluation module of this application first obtains the ultraviolet transmittance of the nonwoven substrate. Dose deviation along the width of the irradiated area Ultraviolet transmittance This directly reflects the nonwoven fabric's ability to absorb ultraviolet light, which is fundamental to ensuring disinfection effectiveness, as only absorbed ultraviolet light can exert a bactericidal effect. Dosage deviation This quantifies the uniformity of ultraviolet (UV) radiation distribution along the width of the nonwoven fabric, which is crucial for avoiding insufficient or excessive irradiation in localized areas. Specifically, by acquiring the transmitted and incident light intensities of the nonwoven substrate and calculating the UV transmittance based on their ratio, the measured light intensity data is directly used, avoiding errors caused by indirect estimation and thus accurately reflecting the UV absorption characteristics of the nonwoven fabric. Simultaneously, by acquiring multi-point measured irradiance and its average value along the width direction and substituting it into the standard deviation formula to calculate the dose deviation, the non-uniformity of irradiance distribution is quantified, providing objective indicators and ensuring the stability and repeatability of parameter acquisition. These features collectively enable high-precision measurement of UV transmittance and dose deviation, laying a reliable foundation for calculating the effective irradiance coefficient of the target surface. Through these precisely acquired parameters, the effective irradiance assessment module can more accurately calculate the effective irradiance coefficient of the target surface, thereby enabling the online disinfection adaptive control system to perform more precise closed-loop adjustment, ensuring disinfection effectiveness while effectively protecting the nonwoven substrate.

[0051] Then, these two parameters are substituted into a specific mathematical formula. The effective irradiance coefficient of the target surface was calculated. This formula cleverly utilizes the absorption properties of nonwoven fabrics (through $1- This is reflected in the higher the absorptivity, the larger this item becomes, and the uniformity of irradiation (through...). This is reflected in the fact that the better the uniformity, the larger this value. When the nonwoven fabric absorbs ultraviolet light sufficiently and the irradiation is uniform,... A value close to 1 indicates that ultraviolet light is efficiently utilized by the target surface; conversely, when the nonwoven fabric has high transmittance or the irradiation is uneven, A value approaching 0 indicates low ultraviolet (UV) utilization efficiency. In this way, the target surface effective irradiation assessment module provides a comprehensive and quantitative indicator that accurately reflects the actual utilization efficiency of UV light during the nonwoven fabric disinfection process. This coefficient, as a crucial input to the online disinfection adaptive control system, works in conjunction with the light source efficiency coefficient, transmission medium attenuation coefficient, and operating condition adaptation coefficient, enabling the closed-loop control execution module to dynamically adjust the output intensity of the UV light source based on actual conditions. For example, when the target surface effective irradiation coefficient is low, the system identifies low UV utilization efficiency and considers increasing the output intensity in the closed-loop control to compensate for the loss, ensuring the final disinfection effect meets requirements. This assessment mechanism overcomes the limitations of traditional fixed power output, allowing the disinfection device to adapt to different nonwoven fabric material characteristics and variations in irradiation uniformity, thereby ensuring sterilization effectiveness while avoiding unnecessary energy waste and excessive irradiation of the nonwoven fabric.

[0052] As a specific implementation method, the ultraviolet transmittance of the nonwoven fabric substrate and the dose deviation of the irradiated area along the width direction can be obtained as follows. To obtain the ultraviolet transmittance, two calibrated ultraviolet sensors can be used, for example, a UV-C sensor with a specific spectral response for a wavelength of 253.7 nm. One sensor can be placed above the nonwoven fabric as an incident light intensity sensor, and the other sensor is placed below the nonwoven fabric as a transmitted light intensity sensor. When the incident light intensity sensor measures an irradiance of 100 mW / cm², and the transmitted light intensity sensor measures an irradiance of 80 mW / cm², the ultraviolet transmittance of the nonwoven fabric substrate can be calculated as 0.8 by ratio processing. To obtain the dose deviation of the irradiated area along the width direction, a linear array consisting of five ultraviolet sensors can be arranged along the width direction of the nonwoven fabric. Assume the irradiance values ​​measured by these sensors are 90 mW / cm², 100 mW / cm², 110 mW / cm², 100 mW / cm², and 90 mW / cm², respectively. First, calculate the average of these values: (90 + 100 + 110 + 100 + 90) / 5 = 98 mW / cm². Then, substitute these measured irradiance values ​​and their average value into the above formula to calculate the swath dose deviation. Approximately 0.076. Once obtained and The data processing unit then substitutes these two values ​​into the formula. Thus, the effective irradiance coefficient of the target surface can be calculated. This coefficient will be passed to the closed-loop control execution module as the basis for adjusting the output intensity of the ultraviolet light source.

[0053] Through the above technical solution, this application can accurately quantify the degree to which ultraviolet light is effectively utilized by the nonwoven fabric target surface, solving the problem of fluctuations in disinfection effect caused by differences in the material properties of different batches of nonwoven fabric and the non-uniformity of the irradiation area. Specifically, by obtaining the ultraviolet transmittance of the nonwoven fabric substrate, the system can monitor the material's absorption capacity for ultraviolet light in real time, thereby avoiding insufficient disinfection due to high transmittance or excessive irradiation due to low transmittance. At the same time, by obtaining the dose deviation along the width direction of the irradiation area, the system can identify and compensate for the uneven distribution of irradiation intensity in the width direction of the nonwoven fabric, ensuring uniform disinfection effect across the entire width range and avoiding insufficient disinfection in local areas or unnecessary damage to the nonwoven fabric. Integrating these two key parameters to calculate the effective irradiation coefficient of the target surface provides a comprehensive and accurate assessment of the target surface utilization efficiency for the online disinfection adaptive control system, enabling the closed-loop control execution module to more accurately adjust the output intensity of the ultraviolet light source, thereby optimizing energy utilization while ensuring the disinfection effect of the medical antiviral nonwoven fabric and protecting the physical properties and antiviral coating of the nonwoven fabric.

[0054] This application further proposes the following operation flow for the operation adaptability evaluation module: The irradiation distance offset between the UV lamp and the nonwoven fabric surface, as well as the nonwoven fabric's running speed, are obtained. The irradiation distance offset can be obtained by measuring the actual distance between the UV lamp and the nonwoven fabric surface in real time using a distance sensor (such as a laser rangefinder or ultrasonic sensor) and comparing it with a preset nominal irradiation distance. The nonwoven fabric's running speed can be obtained by monitoring the nonwoven fabric's movement speed in real time using an encoder or speed sensor installed on the production line.

[0055] Substitute the current irradiation distance offset and the nonwoven fabric running speed into the formula. Obtain the comprehensive dose rate perturbation factor This step aims to quantify the changes in actual irradiation dose rate caused by deviations from nominal values ​​in irradiation distance and nonwoven fabric operating speed; among which, Nominal irradiation distance, The sum of the two is the irradiation distance offset. This is the actual irradiation distance. According to the inverse square law, irradiation intensity is inversely proportional to the square of the distance. Therefore... The item reflects the effect of distance variation on irradiance; The nominal operating speed, For the running speed of the nonwoven fabric, The term reflects the impact of velocity changes on the total dose received by the nonwoven fabric (i.e., the energy received per unit area). Multiplying these two terms allows for a comprehensive assessment of the degree to which changes in operating parameters affect the actual disinfection effect, thus yielding the comprehensive dose rate perturbation factor. This calculation can be performed in the processor of the control system; the nominal irradiation distance and nominal operating speed are ideal operating parameters determined during system design and can be pre-stored in the control system.

[0056] Substituting the comprehensive dose rate perturbation factor, the light source side efficiency coefficient, and the transmission medium attenuation coefficient into the formula Obtain the working condition adaptation coefficient , , A value close to 1 indicates that the current light source performance and medium transmission conditions are good, and the irradiation distance and operating speed are both in an ideal state, with the operating parameters and system capabilities being highly compatible. A value approaching 0 indicates severe degradation of the current light source performance and medium transmission conditions, along with significant deviations in irradiation distance and operating speed, and a severe mismatch between operating parameters and system capabilities. Sensitivity adjustment factor (dimensionless, normal), sensitivity adjustment factor It is a configurable parameter used to adjust the system's sensitivity to operational disturbances. It can be set according to the actual application scenario and the requirements for control accuracy, for example, by inputting through the user interface or by optimizing based on historical data. The efficiency coefficient on the light source side. The attenuation coefficient of the transmission medium. This is the overall dose rate perturbation factor. This item represents the overall loss level of the light source and the medium transmission process; the greater the loss, the larger this value. The term quantifies the degree to which the operating parameters deviate from the ideal state, when The further it deviates from 1 (ideal state), the larger this value becomes. Sensitivity adjustment factor. Used to adjust the system's sensitivity to these disturbances. This is achieved through an exponential function, ensuring... The value in It can reflect the degree of fit non-linearly. This calculation can also be performed in the processor of the control system.

[0057] This application's solution aims to overcome the limitations of traditional disinfection devices, which cannot accurately quantify the impact of operational parameter changes on disinfection effectiveness under dynamic operating conditions, by constructing a refined operational adaptability evaluation mechanism. This mechanism first acquires key operational parameters in real time, such as the irradiation distance offset between the UV lamp and the non-woven fabric surface, and the non-woven fabric's operating speed. Combined with preset nominal irradiation distance and nominal operating speed, this provides accurate input data for subsequent quantitative evaluation. Real-time monitoring of these parameters ensures the timeliness and accuracy of the evaluation, avoiding errors caused by relying on experience or fixed parameters. Based on this, the system substitutes the acquired irradiation distance offset and non-woven fabric operating speed into a preset comprehensive dose rate perturbation factor calculation formula, accurately quantifying the comprehensive perturbation degree of the actual irradiation dose rate caused by operational parameters deviating from ideal values. This formula cleverly combines the inverse square relationship between irradiation intensity and distance, as well as the influence of operating speed on the total dose, enabling even minute changes in operational parameters to be accurately captured and transformed into quantifiable perturbation factors. Furthermore, this disturbance factor is combined with the light source efficiency coefficient and transmission medium attenuation coefficient in the online disinfection adaptive control system to calculate the operating condition adaptation coefficient through an exponential attenuation model. This combination method reflects the innovation of this solution, as it not only considers the direct impact of operating parameters but also couples them with the system's internal light source performance and environmental medium conditions. When the light source performance or medium transmission conditions are poor, the system's sensitivity to operational disturbances increases, thus more accurately reflecting the true degree of adaptation to the current operating conditions. For example, in cases of light source aging or severe medium absorption, even slight deviations in operating parameters can lead to a significant decrease in the operating condition adaptation coefficient, prompting the system to make more proactive adjustments. This comprehensive evaluation mechanism enables the online disinfection adaptive control system to more accurately understand the complexity of the current disinfection environment, providing a solid data foundation for subsequent closed-loop control, thereby ensuring stable disinfection effects under various dynamic operating conditions while avoiding excessive irradiation that could damage the nonwoven fabric substrate.

[0058] As a specific implementation, the operational adaptability assessment module can be integrated into the central controller of the sterilization device used in the processing and production of medical antiviral nonwoven fabrics. This controller can employ a high-performance industrial-grade microprocessor, such as an ARM-based embedded processor, to ensure real-time data processing capabilities. Regarding parameter acquisition, the irradiation distance offset between the ultraviolet lamp and the nonwoven fabric surface can be measured in real time using a non-contact laser rangefinder sensor installed inside the irradiation chamber 1. This sensor periodically emits a laser beam towards the nonwoven fabric surface and receives the reflected signal, calculating the actual distance using the time-of-flight method or triangulation. Comparing this actual distance with a preset nominal irradiation distance yields the irradiation distance offset. The running speed of the nonwoven fabric can be obtained using a rotary encoder installed near the winding or unwinding mechanism. The encoder is connected to the drive rollers of the nonwoven fabric; by measuring the roller's rotational speed and combining this with the roller's diameter, the linear velocity of the nonwoven fabric can be calculated in real time. Nominal operating speed and sensitivity modulators It can be stored as system configuration parameters in the controller's non-volatile memory and adjusted via a human-machine interface. In terms of the calculation process, the controller first reads the current irradiation distance offset from the sensor and memory. Non-woven fabric running speed Nominal irradiation distance nominal operating speed Then, the processor executes the integrated dose rate perturbation factor. The calculation is then performed. Next, the controller obtains the light source-side performance coefficient calculated by the light source-side performance evaluation module. and the transmission medium attenuation coefficient calculated by the medium attenuation assessment module Finally, the processor substitutes these values ​​into the operating condition adaptation coefficient. The calculation formula for the working condition adaptation coefficient is as follows. It is then passed to the closed-loop control execution module as an important basis for adjusting the output intensity of the ultraviolet light source.

[0059] Through the above technical solution, this application can accurately quantify the impact of irradiation distance offset and operating speed changes on disinfection effect, solving the problem that traditional devices cannot effectively respond to changes in dynamic operating parameters. Specifically, by acquiring and calculating the comprehensive dose rate perturbation factor in real time, the system can accurately capture the actual irradiation dose rate deviation caused by changes in distance and speed, avoiding insufficient or excessive disinfection due to experience-based judgment or fixed parameter settings. Furthermore, by combining this perturbation factor with the light source-side efficiency coefficient and the transmission medium attenuation coefficient, the calculated operating condition adaptation coefficient can comprehensively reflect the degree of matching between the current operating state and the system capability. This comprehensive evaluation mechanism enables the online disinfection adaptive control system to more intelligently identify and respond to complex operating condition changes, thereby providing a more accurate decision-making basis for closed-loop control. Ultimately, this helps ensure that medical antiviral nonwoven fabrics always obtain a stable and effective ultraviolet disinfection dose during continuous production, while maximizing the protection of the antiviral coating and physical properties of the nonwoven fabric, avoiding material damage caused by improper irradiation, and significantly improving the reliability and production efficiency of the disinfection process.

[0060] This application further proposes a closed-loop irradiation control model as follows:

[0061] in, Target ultraviolet radiation intensity, target ultraviolet radiation intensity This refers to the actual ultraviolet intensity that the disinfection device needs to output to ensure that the non-woven fabric surface receives the expected effective irradiation dose. As the output target of the closed-loop control system, it guides the power adjustment of the ultraviolet light source. This intensity can be adjusted by controlling the driving current or voltage of the ultraviolet light source, or by adjusting the number of working lamps in the light source array. The required effective irradiance. It refers to the minimum ultraviolet radiation dose required to achieve a specific disinfection effect (such as inactivating a specific virus or bacteria), and the intensity value obtained after time integration. It serves as the benchmark for disinfection effect and is the input parameter for the system to calculate the irradiation intensity. This intensity can be set according to the preset disinfection standard, the ultraviolet sensitivity of the target microorganism and the characteristics of the non-woven fabric, or determined through experimental data or industry standards. The effective irradiance coefficient of the target surface. It characterizes the degree to which ultraviolet light is effectively utilized by the nonwoven fabric target surface. It reflects the absorption efficiency of the nonwoven fabric for ultraviolet light and the uniformity of irradiation. It is used to correct the actual output intensity to compensate for the loss of target surface utilization. This coefficient can be obtained by real-time measurement of the ultraviolet transmittance of the nonwoven fabric and the dose deviation of the irradiated area by a sensor, or by pre-calibrating different types of nonwoven fabrics. The operating condition adaptation factor is the coefficient of performance. This coefficient characterizes the degree of fit between the current operating status and system capabilities (light source efficiency and medium transmission conditions). It reflects the impact of light source aging, quartz sleeve 5 contamination, lamp wall temperature deviation, environmental medium absorption, and operating parameters (such as irradiation distance and operating speed) on the effective output of ultraviolet light. It is used to correct the actual output intensity to compensate for the losses caused by these factors. This coefficient can be calculated by real-time monitoring of the irradiation intensity attenuation rate of ultraviolet lamp 4, wall temperature, light transmittance of quartz sleeve 5, environmental parameters (such as humidity and ozone concentration) in irradiation chamber 1, as well as the operating speed and irradiation distance of the non-woven fabric, combined with a preset model, or estimated by looking up tables based on the operating parameters.

[0062] This closed-loop irradiation control model is a mathematical expression used to dynamically calculate the target irradiance intensity that the ultraviolet light source should output under given disinfection requirements and actual operating conditions. Its function is to achieve precise and adaptive control of the ultraviolet disinfection process, ensuring the stability and reliability of the disinfection effect. This model can be implemented as a software algorithm in the central controller of the disinfection device, embedding the formula logic into the control program using programming languages ​​(such as C++ or Python); alternatively, it can be implemented through hardware logic circuits, outputting the target intensity signal after processing the input signals of each coefficient through analog or digital circuits.

[0063] This application's solution, by explicitly defining a closed-loop irradiation control model, enables the online disinfection adaptive control system to accurately calculate the target ultraviolet irradiation intensity. This model uses the required effective irradiation intensity... Based on, and combined with the effective irradiance coefficient of the target surface Adaptability coefficient to operating conditions The output intensity of the ultraviolet light source is dynamically adjusted. Specifically, when the effective irradiance coefficient of the target surface... A low value indicates insufficient effective utilization of ultraviolet light by the nonwoven fabric; a low working condition adaptability coefficient indicates insufficient utilization of ultraviolet light by the nonwoven fabric. A lower value indicates a degradation in light source-side performance, medium transport conditions, or operating parameters. In both cases, the model will... Divide by and The product of these can correspondingly increase the target's ultraviolet radiation intensity. This compensation mechanism ensures that even under adverse conditions such as changes in nonwoven fabric properties, environmental media attenuation, or fluctuations in operating conditions, the nonwoven fabric surface can still receive a preset effective irradiation dose. This model works closely with the light source performance evaluation module, media attenuation evaluation module, target surface effective irradiation evaluation module, and operation adaptability evaluation module in the online disinfection adaptive control system. These modules provide real-time... and The required parameters are combined to form a complete closed-loop control circuit. In this way, the system can overcome the limitations of traditional fixed power output, achieve precise and adaptive control of the ultraviolet disinfection process, and thus significantly improve the stability and reliability of the disinfection effect.

[0064] The following is a concrete example to illustrate this. Suppose that during the processing and production of medical antiviral nonwoven fabric, it is necessary to ensure that the surface of the nonwoven fabric receives a required effective irradiation intensity of 100 mJ / cm². In actual operation, the target surface effective irradiation evaluation module detected that the ultraviolet transmittance of the current nonwoven fabric substrate was low, and there was a certain dose deviation along the width of the irradiated area. The target surface effective irradiation coefficient was then calculated. The value is 0.7. Meanwhile, the operational adaptability assessment module calculates the operational condition adaptability coefficient based on factors such as the aging degree of the UV lamp 4, the slight contamination of the quartz sleeve 5, and the high relative humidity inside the irradiation chamber 1. The value is 0.8. At this point, the closed-loop control execution module substitutes these parameters into the closed-loop irradiation control model. =178.57 mJ / cm². The system will calculate the target ultraviolet radiation intensity. The power regulator 7 adjusts the output power of the ultraviolet lamp 4 to achieve an output intensity of approximately 178.57 mJ / cm². In this way, even under conditions of low UV utilization and environmental degradation, the non-woven fabric surface can still receive an effective irradiation dose of 100 mJ / cm², thus ensuring the disinfection effect.

[0065] Through the aforementioned technical solution, this application clarifies the specific mathematical expression of the closed-loop irradiation control model, enabling the disinfection device to accurately calculate and dynamically adjust the output intensity of the ultraviolet light source based on the real-time changes in the effective irradiation coefficient of the target surface and the operating condition adaptation coefficient. This adaptive intensity adjustment mechanism effectively compensates for ultraviolet energy loss caused by factors such as ultraviolet lamp attenuation, quartz sleeve contamination, environmental medium absorption, and fluctuations in operating parameters, thereby ensuring that the nonwoven fabric surface always receives the required effective irradiation dose. This significantly solves the problems of unstable disinfection effect and poor reliability caused by the lack of dynamic adjustment capability in traditional disinfection devices, greatly improving the accuracy and control level of the disinfection process, while also helping to optimize energy utilization, extend equipment life, and protect the material properties of the nonwoven fabric.

[0066] like Figure 1 As shown, in a preferred embodiment of the present invention, the ultraviolet light source assembly includes an ultraviolet lamp 4, a quartz sleeve 5, a reflector 6, and a power regulator 7. The ultraviolet lamp 4 is installed inside the irradiation chamber 1, the quartz sleeve 5 is sleeved on the outside of the ultraviolet lamp 4, and the reflector 6 is installed on the side of the ultraviolet lamp 4 facing away from the non-woven fabric to reflect ultraviolet rays to the surface of the non-woven fabric, thereby improving the irradiation utilization rate. The power regulator 7 is electrically connected to the ultraviolet lamp 4 and is used to adjust the output power of the ultraviolet lamp according to the instructions of the control system.

[0067] The ultraviolet lamp 4 is the core light-emitting component of the ultraviolet light source assembly, and its main function is to generate ultraviolet radiation for disinfection. The ultraviolet lamp 4 typically takes the form of a low-pressure mercury lamp, a medium-pressure mercury lamp, or an ultraviolet LED. For example, a low-pressure mercury lamp emits ultraviolet light with a wavelength of 253.7 nm, which has a good killing effect on microorganisms; while ultraviolet LEDs have advantages such as small size, long lifespan, and fast response speed. It is installed inside the irradiation chamber 1, serving as the main ultraviolet radiation source and directly providing the energy required for disinfection. A quartz sleeve 5 is fitted around the ultraviolet lamp 4, its main function being to protect the ultraviolet lamp 4 from the influence of the internal environment of the irradiation chamber 1 (such as humidity, dust, non-woven fibers, etc.), while maintaining a stable operating temperature of the lamp. Quartz material has excellent ultraviolet transmittance and high-temperature and corrosion resistance. This can be achieved by designing the quartz sleeve 5 as a closed structure, completely enclosing the ultraviolet lamp 4, or by designing it as an open structure, providing protection only in critical areas. The reflector 6 is installed on the side of the UV lamp 4 facing away from the non-woven fabric. Its main function is to reflect the ultraviolet rays emitted by the UV lamp 4, which would otherwise radiate in a non-target direction, back onto the non-woven fabric surface, thereby improving the utilization efficiency and irradiation uniformity of the ultraviolet rays. The reflector 6 is usually made of a high-reflectivity material, such as polished aluminum, silver-plated or aluminum-plated polymer materials. Its shape can be designed as parabolic, elliptical, or composite curve to optimize the focusing and distribution of ultraviolet rays. The power regulator 7 is electrically connected to the UV lamp 4. Its core function is to precisely adjust the output power of the UV lamp 4 according to the instructions of the control system, thereby controlling the irradiation intensity of the ultraviolet rays. This enables the disinfection device to achieve dynamic and adaptive irradiation intensity adjustment. The power regulator 7 can be implemented using various technologies, such as silicon controlled rectifier (SCR) voltage regulation, high-frequency switching power supplies (such as PWM control), or digital-to-analog converters (DACs) combined with drive circuits, to achieve precise control of the lamp current or voltage, thereby changing the output power of the lamp.

[0068] In one specific implementation, the ultraviolet light source assembly may include one or more ultraviolet lamps 4, such as high-power ultraviolet-C (UV-C) low-pressure mercury lamps, whose emitted ultraviolet wavelengths are mainly concentrated at 253.7 nm, possessing highly efficient sterilization capabilities. These ultraviolet lamps 4 can be installed horizontally or vertically within the irradiation chamber 1, arranged side-by-side to cover the entire width of the non-woven fabric. The quartz sleeve 5 can be made of high-purity quartz glass, with its wall thickness and diameter optimized to ensure good ultraviolet transmittance and mechanical strength. It can be fixed to the irradiation chamber 1 using a sealing ring or flange connection, forming a relatively independent protective cavity. The reflector 6 can be stamped from anodized aluminum sheet, with its inner surface mirror-polished to maximize ultraviolet reflection efficiency. It can be fixed above the ultraviolet lamps 4 using clips or screws. The power regulator 7 can be a microprocessor-controlled PWM (Pulse Width Modulation) power module. This module receives 0-10V analog signals or Modbus digital signals from the closed-loop control execution module to precisely control the current or voltage supplied to the UV lamp 4, thereby achieving stepless power regulation from 10% to 100%. For example, when the system detects that the UV lamp 4 is aging and causing output attenuation, the power regulator 7 can automatically increase its output power to compensate for the attenuation; when the nonwoven fabric runs faster, the power regulator 7 can also increase the power accordingly to ensure that the total dose received per unit area of ​​nonwoven fabric remains unchanged.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A disinfection device for processing and producing medical antiviral nonwoven fabrics, comprising an irradiation chamber, wherein an ultraviolet light source assembly is installed inside the irradiation chamber, characterized in that, Also includes: The online disinfection adaptive control system includes: The light source side efficiency evaluation module is used to obtain the irradiance attenuation rate and wall temperature of the ultraviolet lamp tube, as well as the transmittance of the quartz sleeve, and to calculate the light source side efficiency coefficient, which characterizes the effective radiation output capability of the ultraviolet light source. The medium attenuation assessment module is used to obtain the number density of water vapor molecules and the number density of ozone molecules in the air inside the irradiation chamber, and to calculate the transmission medium attenuation coefficient, which characterizes the degree of transmission attenuation of ultraviolet rays in the air medium. The target surface effective irradiation evaluation module is used to obtain the ultraviolet transmittance of the non-woven fabric substrate and the dose deviation of the irradiated area along the width direction, and to calculate the target surface effective irradiation coefficient, which characterizes the degree to which ultraviolet light is effectively utilized by the target surface. The operation adaptability assessment module is used to obtain the irradiation distance offset between the ultraviolet lamp tube and the non-woven fabric surface and the running speed of the non-woven fabric, and calculate the working condition adaptability coefficient, which characterizes the degree of adaptability between the current operating state and the system capability, based on the light source side efficiency coefficient and the transmission medium attenuation coefficient. The closed-loop control execution module is used to obtain the required effective irradiance intensity, and obtain the target ultraviolet irradiance intensity through the closed-loop irradiance control model based on the effective irradiance coefficient of the target surface and the working condition adaptation coefficient, and perform closed-loop adjustment of the output intensity of the ultraviolet light source based on the target ultraviolet irradiance intensity.

2. The disinfection device for processing and producing medical antiviral nonwoven fabrics according to claim 1, characterized in that, The operation flow of the light source side performance evaluation module is as follows: Obtain the current irradiance attenuation rate and wall temperature of the ultraviolet lamp, as well as the light transmittance of the quartz sleeve; Substitute the current wall temperature of the UV lamp into the formula. To obtain the lamp wall temperature compatibility index, among which, The wall temperature of the ultraviolet lamp tube. For optimal operating temperature, For temperature tolerance; The light source efficiency coefficient is obtained by multiplying the irradiance attenuation rate of the ultraviolet lamp tube, the transmittance of the quartz sleeve, and the lamp tube wall temperature adaptability index. .

3. The disinfection device for processing and producing medical antiviral nonwoven fabrics according to claim 2, characterized in that, The irradiance attenuation rate of the ultraviolet lamp and the transmittance of the quartz sleeve are obtained as follows: Obtain the current UV lamp irradiance and the light intensity transmitted through the quartz sleeve; The ratio of the current UV lamp irradiance to the nominal irradiance of the new lamp at the same distance is used to obtain the UV lamp irradiance attenuation rate. The transmittance of the quartz sleeve is obtained by comparing the current transmitted light intensity with the baseline transmitted light intensity of the quartz sleeve in a clean state.

4. The disinfection device for processing and producing medical antiviral nonwoven fabrics according to claim 1, characterized in that, The operation flow of the medium attenuation assessment module is as follows: Obtain the number density of water vapor molecules and ozone molecules in the air inside the irradiation chamber; Substituting the water vapor molecule number density and ozone molecule number density into the formula Obtain the attenuation coefficient of the transmission medium. ,in, This represents the absorption cross section of water vapor molecules to 253.7 nm ultraviolet light. The number density of water vapor molecules. This represents the absorption cross section of ozone molecules to 253.7 nm ultraviolet light. Ozone number density This is the distance from the center of the lamp tube to the fabric surface.

5. The disinfection device for processing and producing medical antiviral nonwoven fabrics according to claim 4, characterized in that, The water vapor molecule number density and ozone molecule number density are obtained as follows: Obtain the current temperature, relative humidity percentage, ozone concentration, and air pressure inside the irradiation chamber; First, based on the current temperature inside the irradiation chamber, calculate the maximum number of water vapor molecules that the air can hold at that temperature using the saturated vapor pressure formula; then multiply by the relative humidity percentage to obtain the actual water vapor number density. According to the ideal gas law, the total number of gas molecules per unit volume is inversely proportional to temperature and directly proportional to gas pressure; the ozone number density is obtained by multiplying the ozone concentration (volume fraction) by the total number density of molecules.

6. The disinfection device for processing and producing medical antiviral nonwoven fabrics according to claim 1, characterized in that, The operation flow of the target surface effective irradiation assessment module is as follows: To obtain the ultraviolet transmittance of the nonwoven fabric substrate and the dose deviation of the irradiated area along the width direction; Substituting the UV transmittance of the nonwoven fabric substrate and the dose deviation of the irradiated area along the width direction into the formula Obtain the effective irradiance coefficient of the target surface Where v is the ultraviolet transmittance of the nonwoven fabric substrate. This represents the dose deviation along the width of the irradiated area.

7. The disinfection device for processing and producing medical antiviral nonwoven fabrics according to claim 6, characterized in that, The method for obtaining the ultraviolet transmittance of the nonwoven fabric substrate and the dose deviation of the irradiated area along the width direction is as follows: The transmitted light intensity and incident light intensity of the nonwoven fabric substrate, as well as the measured irradiance at multiple points along the width direction and its average value, are obtained. The ultraviolet transmittance of the nonwoven fabric substrate is obtained by processing the ratio of the current transmitted light intensity to the incident light intensity. Substitute the measured irradiance at multiple points along the width direction and its average value into the formula. , obtain For amplitude dose deviation, where, This represents the measured irradiance at multiple points along the width direction. This is the average value.

8. The disinfection device for processing and producing medical antiviral nonwoven fabrics according to claim 1, characterized in that, The operation process of the operation adaptability evaluation module is as follows: Obtain the irradiation distance offset between the ultraviolet lamp and the surface of the nonwoven fabric, and the running speed of the nonwoven fabric; Substitute the current irradiation distance offset and the nonwoven fabric running speed into the formula. Obtain the comprehensive dose rate perturbation factor ,in, Nominal irradiation distance, This is the irradiation distance offset. The nominal operating speed, The running speed of the nonwoven fabric; Substituting the comprehensive dose rate perturbation factor, the light source side efficiency coefficient, and the transmission medium attenuation coefficient into the formula Obtain the working condition adaptation coefficient ,in, As a sensitivity modulator, The efficiency coefficient on the light source side. The attenuation coefficient of the transmission medium. This is the overall dose rate perturbation factor.

9. The disinfection device for processing and producing medical antiviral nonwoven fabrics according to claim 1, characterized in that, The closed-loop irradiation control model is as follows: ， in, For the target ultraviolet radiation intensity, For the required effective irradiation intensity, The effective irradiance coefficient of the target surface. This is the working condition adaptation coefficient.

10. The disinfection device for processing and producing medical antiviral nonwoven fabrics according to claim 1, characterized in that, The ultraviolet light source assembly includes an ultraviolet lamp, a quartz sleeve, a reflector, and a power regulator. The ultraviolet lamp is installed inside the irradiation chamber. The quartz sleeve is fitted over the ultraviolet lamp. The reflector is installed on the side of the ultraviolet lamp facing away from the non-woven fabric to reflect ultraviolet rays onto the surface of the non-woven fabric, thereby improving irradiation utilization. The power regulator is electrically connected to the ultraviolet lamp and is used to adjust the output power of the ultraviolet lamp according to the instructions of the control system.

Images