Method and device for detecting ultraviolet (UV) sterilization effect

Abstract

The invention discloses a method and device for detecting ultraviolet (UV) sterilization effect. The method comprises the following steps: (1) determining the relationship among the UV radiation strength, UV radiation time, and sterilization rate; (2) detecting the UV radiation strength; (3) obtaining the sterilization rate according to the UV radiation strength and a given radiation time. The device comprises a UV strength detection device, a time setting device, and a sterilization rate calculation module. The method and device can guarantee the effectiveness of a UV sterilization facility on killing bacteria (especially staphylococcus aureus), the sterilization process, which cannot be observed by naked eyes, can be evaluated and controlled, moreover, the UV sterilization facility can be stopped after the staphylococcus aureus is completely killed, the energy waste is avoided, and the practicality of the UV sterilization facility is improved.

Description

technical field [0001] The patent of the present invention relates to a method for detecting bactericidal effect, in particular to a method and device for detecting the effect of ultraviolet rays on killing bacteria. Background technique [0002] As we all know, ultraviolet rays have a sterilizing function, such as using UV-C wavelengths (200-280nm) in ultraviolet rays (wavelength range 380nm-200nm) to damage microorganisms and destroy nucleic acids to kill microorganisms, thereby achieving a bactericidal effect. In modern life, products such as disinfection lamps and disinfection cabinets that use ultraviolet rays for sterilization and disinfection have appeared. However, the ultraviolet lamps of these products have a service life. With the prolongation of the use time, the lamps will gradually age, and the light intensity will lose 30%-50%. When the ultraviolet light intensity does not reach the national disinfection standard of 300J / cm2 , Microorganisms will appear photo...

AI Technical Summary

Problems solved by technology

The usual way of killing Staphylococcus aureus is ultraviolet disinfection. The existing detection of the sterilization effect of various disinfection products, especially the real-time killing effect of Staphylococcus aureus, has not yet been realized by using sensor photoelectric methods. Disinfection lamps, disinfection Disinfection facilities such as cabinets have never clearly marked the degree to which various bacteria such as Staphylococcus aureus are killed, which may lead to misunderstandings in disinfection work

Because the method of detecting the disinfection effect is not accurate enough, many misunderstandings have occurred in the use of ultraviolet disinfection facilities. For example, after the ultraviolet disinfection lamp is aged, it is still disinfected according to the normal disinfection steps, resulting in insufficient sterilization and the continued spread of pathogens.

Images