Method and device for detecting ultraviolet (UV) sterilization effect

A technology of ultraviolet light and bacteria, which is applied in the direction of water supply equipment, sanitary equipment for toilets, buildings, etc., can solve the problems of insufficient sterilization degree, inaccurate detection of disinfection effect, misunderstanding of disinfection work, etc., and achieve long service life, Increased practicality, small size effect

Active Publication Date: 2015-06-17
罗旭
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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

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  • Method and device for detecting ultraviolet (UV) sterilization effect
  • Method and device for detecting ultraviolet (UV) sterilization effect
  • Method and device for detecting ultraviolet (UV) sterilization effect

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Embodiment Construction

[0037]First, the killing experiment of Staphylococcus aureus was carried out. Four petri dishes were used, and Staphylococcus aureus was inoculated on them. The white spots were colonies. The results after ultraviolet irradiation were as follows. The killing effect of continuous irradiation for 3 minutes under the irradiation intensity, the sterilization rate is about 100%, and the killing effect of continuous irradiation for 3 minutes under the ultraviolet irradiation intensity of 40 microwatts / square centimeter for B petri dish, the sterilization rate is about 65%; Petri dish C is the killing effect of continuous irradiation for 3 minutes under the ultraviolet irradiation intensity of 20 microwatts / square centimeter, and the sterilization rate is about 32%; D petri dish is continuously irradiating for 3 minutes under the ultraviolet irradiation intensity of 10 microwatts / square centimeter killing effect. In addition, other irradiation intensity tests were carried out. Staphy...

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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...

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Application Information

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IPC IPC(8): A61L2/28
Inventor 罗旭王平许金通林才周铁丽
Owner 罗旭
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