A method for automatically controlling ultraviolet radiation dosage and ultraviolet disinfection and sterilization equipment

Abstract

The present invention discloses an automatic control method of ultraviolet irradiation dosage, comprising the following steps: S1, turning on an ultraviolet light source to irradiate a target area; S2, obtaining the irradiation time t of the target area required by the ultraviolet light source according to the ultraviolet radiation dosage required to eliminate viruses or bacteria, the ultraviolet sensitivity of the viruses or bacteria, and the known radiation illuminance of the ultraviolet light source; S3, when the irradiation time of the target area by the ultraviolet light source reaches t or slightly longer than t, the ultraviolet light source is turned off. This method can more accurately control the time of irradiating viruses or bacteria according to the ultraviolet characteristics of different types of viruses or bacteria, that is, ultraviolet sensitivity and the ultraviolet radiation dosage to be eliminated, and can also accurately achieve the effect of sterilization and disinfection.

Description

Technical Field

[0001] The invention relates to the field of health protection, and in particular to an automatic control method for ultraviolet irradiation dosage and ultraviolet disinfection and sterilization equipment. Background Art

[0002] Ultraviolet disinfection is currently a common means of social public health and home hygiene protection, and is also widely used in the disinfection of indoor air, surface, water and other liquids. However, the existing ultraviolet disinfection method adopts a simple fixed time disinfection, which is not very targeted, which will also affect the effect and efficiency of disinfection. Secondly, the fixed opening mode of the ultraviolet light source not only offsets, but also causes some disinfection equipment to accelerate aging or damage under the long-term inefficient ultraviolet light source. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides an automatic control method for ultraviolet irradiation dosage and ultraviolet disinfection and sterilization equipment, aiming to solve the problems of weak targeting and low efficiency of ultraviolet disinfection in the prior art.

[0004] The present invention discloses an automatic control method of ultraviolet irradiation dosage, comprising the following steps:

[0005] S1, the UV light source is turned on to irradiate the target area;

[0006] S2, according to the ultraviolet radiation dose required to eliminate the virus or bacteria, the ultraviolet sensitivity of the virus or bacteria, and the known radiation illuminance of the ultraviolet light source, obtaining the irradiation time t of the ultraviolet light source required to irradiate the target area;

[0007] S3, when the irradiation time of the ultraviolet light source on the target area reaches t or slightly longer than t, the ultraviolet light source is turned off.

[0008] The automatic control method of ultraviolet irradiation dose provided by the present invention is that first, the ultraviolet light source is turned on by means of sensor induction or mechanical switch, and ultraviolet irradiation is performed on the target area that needs to be sterilized and disinfected. Secondly, according to the ultraviolet radiation dose required for the type of virus or bacteria to be eliminated, the ultraviolet sensitivity of the corresponding virus or bacteria, and the known radiation illuminance of the ultraviolet light source, the irradiation time required for the target area by the ultraviolet light source is obtained. Among them, the above three data can be obtained by querying the existing technical information. Finally, the irradiation time that can eliminate the virus or bacteria is obtained by calculation, and after the irradiation time is reached, the ultraviolet light source is turned off immediately or after a period of time. According to the ultraviolet characteristics of different types of viruses or bacteria, that is, ultraviolet sensitivity and the ultraviolet radiation dose to be eliminated, this method can more accurately control the time of irradiating the virus or bacteria, and can also accurately achieve the effect of sterilization and disinfection.

[0009] In some optional embodiments, the required irradiation time t of the target area may be obtained by a certain integral operation, and the formula is as follows:

[0010]

[0011] in, The UV radiation dose required for the virus or bacteria, is the UV sensitivity of the virus or bacteria, is the irradiance of the ultraviolet light source.

[0012] The ultraviolet radiation dose is the ultraviolet energy received per unit area, which is the integral value of the ultraviolet radiation illuminance and time. Different types of bacteria or viruses have different ultraviolet measurement requirements and different ultraviolet sensitivities. Those skilled in the art can query relevant data in relevant technical specifications. This embodiment integrates the external radiation illuminance within a certain wavelength range and the ultraviolet sensitivity, and then obtains the irradiation time of the target area through the known ultraviolet radiation dose, so as to achieve the purpose of accurate irradiation and effective sterilization and disinfection.

[0013] In some optional embodiments, the required irradiation time t of the target area may be obtained by a certain summation operation, and the formula is as follows:

[0014]

[0015] in, The UV radiation dose required for the virus or bacteria, is the UV sensitivity of the virus or bacteria, The present embodiment calculates the ultraviolet radiation illuminance within a certain wavelength range in combination with the ultraviolet sensitivity by summing operations, and then calculates the irradiation time of the target area by the known ultraviolet radiation dose, so as to achieve the purpose of accurate irradiation and effective sterilization and disinfection.

[0016] In some optional embodiments, a temperature sensor is included, and the temperature sensor measures the ambient temperature T, and the ultraviolet radiation dose and the ultraviolet sensitivity data at the corresponding temperature are retrieved through the ambient temperature T. Since viruses, bacteria, etc. have different activities at different temperatures, the ultraviolet radiation dose required to eliminate them and their own ultraviolet sensitivity will be affected by the ambient temperature. Therefore, in order to obtain a more optimized irradiation time, this embodiment takes the influencing factor of the ambient temperature T into consideration.

[0017] In some optional embodiments, a more accurate irradiation time t is obtained by combining the two factors of the ambient temperature T and the fluctuation of the ultraviolet light source under the influence of the irradiation time according to the following formula:

[0018]

[0019] in, is the ultraviolet radiation dose required by the virus or bacteria at ambient temperature T, is the UV sensitivity of the virus or bacteria at ambient temperature T, is the radiation illuminance of the ultraviolet light source under the influence of the irradiation time t. If the radiation light source remains stable during the sterilization process, the above formula can be simplified.

[0020] In some optional embodiments, a monitoring unit is included, and the monitoring unit monitors the fluctuation of the ultraviolet light source in real time.

[0021] In some optional embodiments, the ultraviolet light source is in the UVC band. When ultraviolet light in the UVC band is irradiated to microorganisms such as bacteria and viruses, it can destroy the DNA / RNA of the microorganisms and cause cell death, thereby achieving the effect of sterilization and disinfection.

[0022] In some optional embodiments, the ultraviolet light source is an ultraviolet LED light source.

[0023] Preferably, the ultraviolet LED light sources are distributed in an array. The ultraviolet LED light sources distributed in an array can ensure that the ultraviolet band light evenly illuminates the target area.

[0024] In some optional embodiments, a first sensor and a control unit are further included; the control unit senses through the first sensor that the target area is touched or entered by foreign objects, so as to control the turning on of the ultraviolet light source; the control unit obtains the irradiation time of the ultraviolet light source, and when the irradiation time reaches or is slightly longer than t, controls the ultraviolet light source to be turned off.

[0025] Furthermore, the present invention also provides an ultraviolet disinfection and sterilization device, comprising an ultraviolet light source, a control unit and a sterilization area; the control unit controls the ultraviolet light source to automatically irradiate the sterilization area through the automatic control method of ultraviolet irradiation dose provided in any of the above embodiments. The ultraviolet disinfection and sterilization device provided by the present invention can achieve targeted and efficient intelligent ultraviolet sterilization and disinfection, and has an exceptional optimization effect.

[0026] In some optional embodiments, the ultraviolet disinfection and sterilization equipment further includes a fluorescent warning mark, which is arranged in or around the disinfection area. When the ultraviolet light source is turned on, the fluorescent warning mark is excited by the ultraviolet light source and emits light, which serves to remind people around that the ultraviolet light source is turned on.

[0027] Furthermore, the present invention also provides a fingerprint collector, including a fingerprint collection area, an ultraviolet light source and a control unit; the control unit controls the ultraviolet light source to automatically irradiate the fingerprint collection area through the automatic control method of ultraviolet irradiation dose provided by any of the above embodiments. The fingerprint collector provided by the present invention can achieve targeted and efficient intelligent ultraviolet sterilization and disinfection, providing a more convenient and safe fingerprint collector for today's increasingly public health environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Attached Figure 1 A process of an automatic control method of ultraviolet irradiation dosage provided by an embodiment of the present invention;

[0029] Attached Figure 2 A structural diagram of an ultraviolet disinfection and sterilization device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] Example 1

[0031] The present invention provides an automatic control method for ultraviolet irradiation dosage, see Figure 1 , the specific steps include:

[0032] S1, the UV light source is turned on to irradiate the target area;

[0033] S2, according to the ultraviolet radiation dose required to eliminate the virus or bacteria, the ultraviolet sensitivity of the virus or bacteria, the known radiation illuminance of the ultraviolet light source, and the influencing factor ambient temperature, the irradiation time t of the ultraviolet light source required to the target area is obtained by summing or integrating operations;

[0034] S3, when the irradiation time of the ultraviolet light source on the target area reaches t, the ultraviolet light source is turned off.

[0035] Example 2

[0036] The present invention provides an ultraviolet disinfection and sterilization device, see Figure 2 , comprising an ultraviolet light source 2, a control unit (not shown) and a disinfection area 1. The control unit controls the ultraviolet light source 2 to automatically irradiate the disinfection area 1 through the automatic control method of ultraviolet irradiation dose provided by any embodiment of the present invention.

[0037] The specific embodiments of the present invention are described above in conjunction with the accompanying drawings, but it should be understood by those skilled in the art that the above embodiments are only for illustration and not for limiting the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The protection scope of the present invention is defined by the appended claims.

Claims

1. A method for automatically controlling ultraviolet irradiation dosage, characterized in that: The steps include: S1, the UV light source is turned on to irradiate the target area; S2, according to the ultraviolet radiation dose required to eliminate the virus or bacteria, the ultraviolet sensitivity of the virus or bacteria, and the known radiation illuminance of the ultraviolet light source, calculate the irradiation time t of the target area required by the ultraviolet light source; calculate the irradiation time t according to formula (1): Among them, H spe is the UV radiation dose required for the virus or bacteria, s(λ) spe is the UV sensitivity of the virus or bacteria, E uv (λ) is the irradiance of the ultraviolet light source; Or the irradiation time t can be calculated according to formula (2): Among them, H spe is the UV radiation dose required for the virus or bacteria, s(λ) spe is the UV sensitivity of the virus or bacteria, E uv (λ) is the irradiance of the ultraviolet light source; S3, when the irradiation time of the ultraviolet light source on the target area reaches t or slightly longer than t, the ultraviolet light source is turned off.

2. The method for automatically controlling ultraviolet irradiation dosage according to claim 1, characterized in that: It includes a temperature sensor, which measures the ambient temperature T, and uses the ambient temperature T to retrieve the data of the ultraviolet radiation dose and the ultraviolet sensitivity at the corresponding temperature.

3. The automatic control method of ultraviolet irradiation dose according to claim 2, characterized in that: Combining the two factors of the ambient temperature T and the fluctuation of the ultraviolet light source under the influence of the irradiation time, a more accurate irradiation time t is obtained according to the following formula: ∫∫E uv (λ,t)s(λ,t) T dλdt=H spc , T Among them, H spc , T is the ultraviolet radiation dose required by the virus or bacteria at ambient temperature T, s(λ,t) T is the UV sensitivity of the virus or bacteria at ambient temperature T, E uv (λ, t) is the radiant illumination of the ultraviolet light source under the influence of the irradiation time t.

4. The automatic control method of ultraviolet irradiation dose according to claim 1, characterized in that: A monitoring unit is included, and the monitoring unit monitors the fluctuation of the ultraviolet light source in real time.

5. The method for automatically controlling ultraviolet irradiation dosage according to claim 1, characterized in that: The ultraviolet light source is in the UVC band.

6. The method for automatically controlling ultraviolet irradiation dosage according to claim 1, characterized in that: The ultraviolet light source is an ultraviolet LED light source.

7. The method for automatically controlling ultraviolet irradiation dosage according to claim 1, characterized in that: It also includes a first sensor and a control unit; the control unit senses through the first sensor that the target area is touched or entered by foreign objects, so as to control the turning on of the ultraviolet light source; the control unit obtains the irradiation time of the ultraviolet light source, and when the irradiation time reaches or is slightly longer than t, controls the ultraviolet light source to be turned off.

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