为了实现紫外发光二极管(Ultraviolet Light-Emitting Diodes,UV-LED)表面消毒器设计的优化、高效、智能化目的,研究建立了UV-LED表面消毒辐射场的数学模型,并进行了试验验证.根据该数学模型,编写了VBA(Visual Basic for Applications)程序,对辐射场进行了模拟和分析.结果显示,辐射模型的计算值与实测值接近,试验验证了辐射模型的可行性.试验进行了应用举例,当照射距离与灯间距的比值为0.4时,选择最大发光角90°的UV-LED可使辐射场最优化;当照射距离与灯间距的比值为0.8和1.6时,对应的最优选择分别是45°和30°的UV-LED.数学模型和相关计算方法为优化设计紫外线表面消毒设施提供了模拟、优化的有效工具.
Abstract
This study aims to harness computational intelligence for optimizing efficiency and intelligence in designing UV-LED(Ultraviolet Light-Emitting Diodes)surface disinfection devices.It developed a comprehensive mathematical model of the radiation field for UV-LED surface disinfection based on radiation theory,deriving a series of mathematical equations.In this study,we propose a mathematical regression of the radiation pattern curve to address the variability of UV-LED patterns,surpassing conventional idealized radiation models which may not accurately reflect real-world conditions.This approach aims to significantly minimize the disparity between measured and calculated data.The introduction of a chemical actinometer addressed the challenge of simultaneously measuring irradiation at multiple points in this field.The study accurately determined the loss of UV energy due to reflections on the surface of the chemical actinometer solution based on the Fresnel equation.Subsequently,a VBA program was developed to facilitate simulation,optimization,and analysis of the UV field in UV-LED disinfection devices.The study conducted both experiments(actual measurements)and simulations using a specific array of UV-LEDs.The results demonstrated a strong correlation between simulated and measured values,validating the accuracy of both the mathematical model and VBA program.In the example,the VBA program optimized the UV-LED configuration intelligently.It showed that UV-LEDs with emission angles of 90°,45°,and 30° in the radiation pattern achieved optimal disinfection effects(resulting in the most even radiation field)when the ratio of irradiation distance to lamp spacing was 0.4,0.8,and 1.6,respectively.Additionally,the study investigated the characteristics of UV-LEDs and accurately determined their UV output.This was validated through experiments using the advanced Ultraviolet Space Radiation Distribution Measurement system.This study innovatively utilizes mathematical models and computational methods to optimize the design of UV-LED surface disinfection facilities effectively.With the aid of a VBA program,the proposed method rigorously and accurately mathematically regresses the radiation pattern curve,enabling versatile application across various irradiation patterns.
维普
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