WO2022054298A1 - Dispositif de stérilisation de virus et de bactéries - Google Patents

Dispositif de stérilisation de virus et de bactéries Download PDF

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Publication number
WO2022054298A1
WO2022054298A1 PCT/JP2020/041131 JP2020041131W WO2022054298A1 WO 2022054298 A1 WO2022054298 A1 WO 2022054298A1 JP 2020041131 W JP2020041131 W JP 2020041131W WO 2022054298 A1 WO2022054298 A1 WO 2022054298A1
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Prior art keywords
irradiation
image
sterilizer
light
virus
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PCT/JP2020/041131
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English (en)
Japanese (ja)
Inventor
正幸 猪口
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ｉｎｅｏｖａ株式会社
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Priority claimed from JP2020180727A external-priority patent/JP7150285B2/ja
Application filed by ｉｎｅｏｖａ株式会社 filed Critical ｉｎｅｏｖａ株式会社
Publication of WO2022054298A1 publication Critical patent/WO2022054298A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultraviolet radiation

Definitions

  • the present invention relates to a sterilizing device for viruses and bacteria (hereinafter referred to as "viruses, etc.” in the application documents). More specifically, a sterilizer used in the field of sterilizing viruses and the like adhering to the surface of objects, the field of sterilizing viruses and the like scattered in space, and the field of sterilizing viruses and the like adhering to humans and animals. Regarding.
  • viruses and the like are sterilized with a disinfectant and a bactericidal agent. Viruses and the like are killed by detergents, strong acids, strong alkalis, organic solvents, high temperatures, strong ultraviolet rays, electron beams, radiation and the like.
  • a cleaning agent hypochlorous acid, peracetic acid, alcohol, etc., spraying it into the space, or spraying it into the space and adhering it to it for recovery. Is being done.
  • sterilization treatment with ultraviolet rays is performed. Since ultraviolet rays have a relatively small effect on the human body, sterilization using ultraviolet rays is performed.
  • Ozone also has a relatively small effect on the human body for a short period of time, so sterilization using ozone is performed.
  • sterilization treatment with a photocatalyst is performed.
  • the photocatalyst is irradiated with light (mainly ultraviolet rays), radical substances are generated and sterilized.
  • sterilization is performed by irradiating a laser beam as shown in Patent Document 1.
  • ultraviolet rays or ozone In the conventional sterilization treatment using ultraviolet rays or ozone, it is possible to sterilize viruses and the like attached to various objects such as viruses floating in space.
  • ultraviolet rays or ozone have an effect on the human body depending on a certain range of wavelength, irradiation intensity, and concentration, and therefore cannot be used all the time in a space where humans and animals exist.
  • Patent Document 1 The conventional sterilization process of irradiating a laser as shown in Patent Document 1 cannot completely eliminate the possibility of irradiating a human or an animal when irradiating a beam aiming at an object such as a pest.
  • the present invention constantly operates not only in a space where people and animals do not exist, but also in a space where people and animals exist (indoor / outdoor space, space inside a moving body such as a car / train / airplane), and to humans and animals.
  • the purpose is to effectively kill bacteria and viruses attached to articles (including fresh products such as fruits, vegetables, and fish) without causing any harm.
  • the virus and bacterium sterilizer according to the present invention is provided with an ultraviolet light projection system that shapes ultraviolet light into a beam shape and projects it by scanning on one surface thereof, and reduces or reduces the amount of light according to a predetermined irradiation exclusion region. It is sterilized by setting it to zero.
  • the virus and bacterium sterilizer has an ultraviolet light projection that projects an image reproduced on an ultraviolet light generating device in which an optical switch element and an ultraviolet light generating element are arranged as surface irradiation through a lens on one surface thereof. It is equipped with a system and performs sterilization processing by reducing or zeroing the amount of light of the pixels of the image on the device according to a predetermined irradiation exclusion area.
  • an irradiation exclusion area is formed by image recognition for a reflected image obtained in real time by reflection on the optical axis or a photographed image or recorded image obtained in real time from an image pickup device placed at an arbitrary place. You may ask.
  • the irradiation exclusion target and the recorded image obtained in real time by the reflection on the optical axis or the photographed image or the recorded image obtained in real time from the photographing apparatus placed at an arbitrary place are excluded from irradiation.
  • the amount of irradiation light may be controlled according to the type of irradiation target, the irradiation exclusion target, and the type of irradiation target.
  • the sterilizer performs spectral analysis on the captured image, and in addition to image recognition, analyzes the wavelength / intensity pattern of the spectrum of the target region to perform irradiation exclusion target and irradiation target type.
  • the irradiation light amount may be controlled according to the irradiation exclusion target and the type of the irradiation target.
  • images and spectral data, image feature data, and irradiation exclusion are applied to images or recorded images obtained in real time from a light receiving sensor placed on an optical axis or a photographing device placed at an arbitrary location.
  • the acquired data of the target and the irradiation exclusion area and these analysis information are transmitted to the server by communication as appropriate, and the server records, analyzes, and recognizes the information, and sets the irradiation area and the irradiation intensity information of the sterilizer. It may have a function.
  • the sterilizer may be provided with a function of systematically lighting or monitoring.
  • the sterilizer detects that the beam is irradiated from the reflector to the irradiation exclusion target by the signal obtained from the light receiving element placed at an arbitrary place, stores the position information of the reflector, and at the time of irradiation.
  • the memorized position may have a function of suppressing the average irradiation light amount.
  • the article can be operated at all times without replenishment of a disinfectant or the like with only a power source, without causing harm to humans or animals, and effectively. It can sterilize bacteria and viruses attached to the space.
  • FIG. 1 is a diagram showing a virus or the like sterilizing device 10 according to the first embodiment.
  • FIG. 2 is a diagram showing a virus or the like sterilizing device 20 according to the second embodiment.
  • FIG. 3 is a diagram showing a virus or the like sterilizing device 30 according to the third embodiment.
  • FIG. 4 is a diagram showing a virus or the like sterilizing device 40 according to the fourth embodiment.
  • FIG. 5 is a diagram showing a virus and the like sterilizer system 50 according to the fifth embodiment.
  • FIG. 6 is a diagram showing a virus or the like sterilizing device 60 according to the sixth embodiment.
  • FIG. 1 is a diagram showing a virus or the like sterilizing device 10 according to the first embodiment.
  • the sterilization device 10 shown in FIG. 1 is a device that sterilizes the sterilization plane A by using the ultraviolet rays from the ultraviolet generator 12.
  • the sterilization space S is also sterilized at the same time.
  • the light absorption spectrum of bacterial or viral nucleic acids (DNA: deoxyribonucleic acid, RNA: ribonucleic acid) has an absorption band near the wavelength of 260 nm, and it is known that ultraviolet rays of 300 nm or less have a bactericidal effect.
  • the sterilization plane A a rectangular plane of abcd will be described as an example. However, it is not limited to this. When sterilizing a plane having an arbitrary desired shape, such a plane may be positioned within the sterilization plane A.
  • the sterilizer 10 includes an ultraviolet generator 12 that emits ultraviolet rays, a lens system 14 that changes the direction of the ultraviolet rays to a predetermined direction (for example, substantially parallel light), and the ultraviolet rays from the scanner center point C to the sterilization plane A. It includes an XY scanner 16 that generates a directed scan beam, and a scan control device 18 that controls the operation of the ultraviolet generator 12 and the XY scanner 16, respectively.
  • an ultraviolet LED for example, an ultraviolet LED, a deep ultraviolet LED, an ultraviolet laser, an excimer lamp, a mercury lamp and the like can be used.
  • a gas laser and a solid-state laser can be used.
  • gas lasers KrF excimer lasers with a wavelength of 248 nm, double harmonics of argon lasers with a wavelength of 244 nm, etc. are used. 263 nm or 262 nm) etc. are used.
  • the lens system 14 is composed of one or a plurality of lenses.
  • the "lens system” described in the application documents is the same.
  • the XY scanner 16 can use, for example, a galvanometer mirror, a MEMS mirror device, or the like.
  • the sterilizer 10 turns the ultraviolet light generated by the ultraviolet generator 12 in a predetermined direction (for example, substantially parallel light) by the lens system 14 and incidents it on the XY scanner 16, and the XY scanner emits the output light.
  • P1-P2-P3-P4-P5-P6-P7 ... Pm-Pn shown by the dotted line of the sterilization plane A is scanned, and the entire sterilization plane A (abcd) is irradiated with ultraviolet rays.
  • the distance from the scanner center point C of the XY scanner 16 to the sterilization plane A is D
  • the depth lengths ad and bc of the sterilization plane A are L2
  • d be the diameter of a circle with a vertical cross section.
  • the sterilization space S of the square hanging (plane abcd and the quadrangular pyramid defined by the scanner center point C) in FIG. 1 is thoroughly scanned and subjected to ultraviolet sterilization treatment.
  • the total irradiation energy density D of the ultraviolet laser beam when sterilizing the object to be sterilized (“sterilization plane A” in this embodiment) within 2 hours is 1 [mJ / cm 2 ] or more.
  • the output of the laser light source required for sterilization of an area of 1 m 2 is 1 [mJ / cm 2 ] * 10,000 [cm 2 ] / (3600 * 2)
  • [Sec] 1.39 [mW]
  • irradiation exclusion target in which humans, animals, and other objects that should not be irradiated (hereinafter referred to as “irradiation exclusion target” in the present application documents) exist (hereinafter, “in the application documents”.
  • Ultraviolet irradiation scans are not only continuous and uniform scans as shown in Fig. 1A, but also random scans, which are difficult with conventional methods, and scans focusing on each area in the sterilization plane A. Since the scan density can also be easily changed, it is possible to irradiate a desired region with the required intensity.
  • the output of the ultraviolet generator is not ON / OFF and can be output continuously (for example, the optical output of an ultraviolet LED or a semiconductor ultraviolet laser is proportional to the forward current), the output is output in real time by the scan control device 18. Therefore, it is possible to control the intensity more finely according to the region.
  • a method of varying the output in addition to directly controlling the output of the light source, there is also a control method using a diaphragm inserted in an optical path, an acoustic optical element (Acousto-optic modulators: AOM), or the like.
  • the ultraviolet generator 12 has a composite wavelength generator (for example, white) that can generate another wavelength in addition to the ultraviolet light. Light source) may be added.
  • FIG. 2 is a diagram showing a virus or the like sterilizing device 20 according to the second embodiment.
  • the sterilizer 20 shown in FIG. 2 has a beam splitter 25, a second lens system 24, and a second lens system 24 in the path from the lens system 14 of the sterilizer 10 to the XY scanner 16 as compared with the sterilizer 10 in the first embodiment. The difference is that the photodetector 27 is added.
  • the beam splitter 25 separates the light output from the ultraviolet generator 12 and the light reflected by the irradiation point P so that the reflected light is input to the photodetector 27 through the lens system 24. It is a device to do.
  • the photodetector 27 for example, a phototransistor, a photodiode, a photomultiplier, a CCD, or the like can be used.
  • the lens system 14 turns the beam into a substantially parallel beam and incidents it on the XY scanner 16, which scans (scans) the ultraviolet beam toward the sterilization plane A. Then, the sterilization plane A (abcd) is irradiated with ultraviolet rays. At this time, the reflected light from the irradiation point P or the scattered light from the particles floating in the sterilization space S is detected by the light detector 27, and the reflected light or the signal corresponding to the scattered light is input to the scan control device 28. Ru.
  • the photodetector 27 is a single photodetector, it is sent to the scan control device 28 as a one-dimensional signal and restored as a two-dimensional image.
  • the photodetector 27 can detect two-dimensionally, for example, like a CCD, it is sent to the scan control device 28 as a two-dimensional signal and reproduced as a two-dimensional image.
  • the sterilizer 20 of the second embodiment has the following advantages and effects in addition to the advantages and effects of the sterilizer 10 of the first embodiment.
  • the scan control device 28 transmits a signal of reflected light / scattered light to a memory (not shown) in the scan control device 28 in response to an XY signal (a signal defining a position) that controls scanning of the XY scanner 16. By writing, a reflected image can be easily obtained as a two-dimensional image.
  • the scan control device 28 recognizes an image from the obtained reflected image, recognizes a person, an animal, or another object that should not be irradiated, and obtains an irradiation exclusion area.
  • the intensity of the irradiation output is lowered or turned off so that the irradiation exclusion target is not irradiated with harmful ultraviolet rays.
  • the output should be narrowed down to a safe output intensity range when the eyes are detected.
  • irradiation exclusion targets include clothing and surrounding structures. Efficient sterilization is possible by irradiating with an acceptable intensity level according to the degree of damage caused by the ultraviolet rays to be excluded from irradiation.
  • Modification example (1) Since not only the reflected light due to ultraviolet rays but also the reflected light due to ambient light is generated from the irradiation point P, by using a spectrum detector for the photodetector 27, a color image, an infrared image, etc. can be obtained. Image information based on the spectrum of the above can be obtained, and the recognition accuracy by image recognition can be improved. As a result, by determining the irradiation area and the intensity more precisely and feeding back the irradiation intensity, sterilization can be performed more safely and in a short time.
  • a composite wavelength generator for example, an infrared light or a white light source capable of generating another wavelength in addition to the ultraviolet light may be added.
  • a laser may be used as a light source.
  • a laser it is possible to apply laser spectroscopy to perform highly accurate spectral analysis. Since it is possible to detect the characteristics of microorganisms by high-precision spectral analysis, it is possible to sterilize according to the target.
  • FIG. 3 is a diagram showing a virus or the like sterilizing device 30 according to the third embodiment.
  • the sterilizer 30 is different in that the first and second embodiments irradiate the object with a point beam, whereas the sterilizer 30 irradiates the object collectively in units of surfaces.
  • optical switch element 36 for example, an element capable of light intensity modulation such as a liquid crystal display element and a mirror array element can be used.
  • the light receiving element 37 for example, a CCD, an infrared light receiving array element, or the like can be used.
  • the photodiode, the phototransistor, and the photomultiplier can also be used in the same manner as in the first and second embodiments by blinking and scanning the display of the optical switch element 36 for each pixel.
  • the ultraviolet light generated by the ultraviolet generator 12 is converted into substantially parallel light by the first lens system 34-1 and irradiated to the optical switch element 36, and the image formed on the optical switch element is obtained by the second lens system. It is projected onto the sterilization plane A by 34-2.
  • the optical switch element 36 the amount of light transmitted for each pixel is modulated by the projected image signal 33-1 generated by the image processing and display control device 38, and an arbitrary two-dimensional image is reproduced on the optical switch element 36.
  • the images of the sterilization plane A and the sterilization space S are input to the image processing / display control device 38 as a light receiving image signal 33-2 by the light receiving element 37, and are constructed as a two-dimensional image by the image processing / display control device 38. ..
  • the image processing / display control device 38 performs image recognition on the constructed image of the sterilization plane A by image processing, determines an irradiation exclusion region, and generates a projected image signal 33-1.
  • the irradiation exclusion target can be prevented from being damaged by ultraviolet rays by reducing or turning off the intensity of the irradiation output.
  • optical switch element 36 an element arranged in one dimension (linear) instead of two dimensions can also be used.
  • the linearly generated image is projected onto the sterilization plane A as a two-dimensional image by using a one-dimensional scanner instead of the two-dimensional XY scanner 16 of the first embodiment and the second embodiment. do.
  • a composite wavelength generator may be added to the ultraviolet generator 12. Similar to the second embodiment, it can be expected to replace the illumination, improve the visibility of the irradiation area, and improve the accuracy of spectrum analysis.
  • FIG. 4 is a diagram showing a virus or the like sterilizing device 40 according to the fourth embodiment.
  • the sterilization apparatus 40 receives images of the ultraviolet light emitting element array 46 that projects and irradiates two-dimensional ultraviolet rays onto the sterilization plane A and the sterilization space S, and the sterilization plane A and the sterilization space S, and generates a light receiving image signal 43-2.
  • a light receiving element 47 and an image processing / display control device 48 that generates a projected image signal 43-1 from the light receiving image signal and sends it to the ultraviolet light emitting element array 46 are provided, and the ultraviolet light emitting element array 46 is a two-dimensional projected image signal. Ultraviolet irradiation is performed based on 43-1.
  • the ultraviolet light emitting electron array 46 for example, a device in which an ultraviolet LED element or an ultraviolet light emitting semiconductor laser element is arranged two-dimensionally can be used.
  • the light receiving element 47 for example, a CCD, an infrared light receiving array element, or the like can be used.
  • the photodiode, the phototransistor, and the photomultiplier can also be used in the same manner as in the first and second embodiments by blinking and scanning the display of the ultraviolet light emitting electron array 46 for each pixel.
  • the image displayed on the ultraviolet light emitting element array is projected onto the sterilization plane A by the first lens system 44-1 by the ultraviolet light emitting electron array 46 arranged two-dimensionally.
  • the amount of ultraviolet light generated for each pixel is modulated by the projected image signal 43-1 generated by the image processing and display control device 48, and therefore, the ultraviolet light emitting element array 46 is arbitrary on the ultraviolet light emitting element array 46.
  • the image is reproduced.
  • the images of the sterilization plane A and the sterilization space S are projected onto the light receiving element 47 by the lens system 44-2, and are constructed by the light receiving element 47 as a light receiving image signal 43-2 which is a two-dimensional image of the sterilization plane A.
  • the image processing / display control processing device 48 that has received the received image signal 43-2 performs image recognition, obtains an irradiation exclusion region, and reduces or turns off the intensity of the irradiation output in that region to exclude irradiation. On the other hand, it can be irradiated so as not to cause damage by ultraviolet rays.
  • Modification example (1) When the display of the ultraviolet light emitting electron array 46 is blinked and scanned every pixel, not only the reflected light by the ultraviolet rays but also the reflected light by the ambient light is generated from the irradiation point, so that the light receiving element
  • a high-sensitivity ultraviolet detector or spectrum detector in place of or in combination with 47, high-precision temperature and spectrum can be obtained at the same time for each pixel, so recognition by image recognition. The accuracy can be improved.
  • a composite wavelength generator may be added in parallel with the ultraviolet light emitting electron array 46. Similar to the second embodiment, it can be expected to replace the illumination, improve the visibility of the irradiation area, and improve the accuracy of spectrum analysis.
  • FIG. 5 is a diagram showing a virus and the like sterilizer system 50 according to the fifth embodiment.
  • the sterilizer system 50 is a system in which any of the individual sterilizers 10, 20, 30, 40, 50 of the first to fourth embodiments is appropriately arranged for each room.
  • the sterilizer 10 will be described as an example.
  • sterilizers 10 are installed at two locations on the ceiling in order to thoroughly sterilize the floor surface of the room and the article 52.
  • Room B sterilizers 10 are installed at two locations, the ceiling and the floor, in order to sterilize the upper surface and the lower surface of the article 52.
  • Each sterilizer 10 is connected to the computer server 56 via the communication network 54.
  • the communication network 54 may be an electric wire or wireless, and wireless has an advantage in that it is easy to install.
  • the radial area hatched by the dotted diagonal line is the ultraviolet irradiation area.
  • an irradiation exclusion region is obtained by image recognition as described in the second to fourth embodiments, and the ultraviolet rays are irradiated while avoiding the region.
  • the number of Room A and B can be arbitrarily set, and the position, arrangement, and number of the sterilizer 10 in the Room can also be set arbitrarily.
  • the Room may be a space in which a person is present or a space in a certain device. It is desirable to set the installation position of the sterilizer 10, but a position information system using a GPS (Global Positioning System), a gyro, or the like may be used to facilitate the setting of the installation position.
  • GPS Global Positioning System
  • gyro Global Positioning System
  • the irradiation area of the corresponding sterilizing device 10 is adjusted, and the restriction information of the irradiation area is sent to each sterilizing device 10 to eliminate the overlap of the irradiation areas. Can be done.
  • the lack of the irradiation area can be used as information when installing the sterilizer 10.
  • the position of the sterilizer 10 can be easily determined by showing the missing area of the irradiation area on a monitor or the like (a wireless PDA, a smartphone, or the like in addition to a display connected to the server by a cable). It is possible. Further, if visible light is generated as a light source by a composite wavelength generator, it is possible to visually confirm the irradiation state.
  • the server 56 can obtain all the images in the field of view of the photodetector, a wide field of view can be obtained by synthesizing the images obtained from all the sterilizers 10, so that they can be monitored. It is possible to monitor the status by displaying it in (not shown). The data displayed on the monitor can also be used for recording or monitoring objects, people, etc. using AI. Further, by performing the image recognition process on the server 56, even if the recognition function in each sterilizer cannot recognize the image due to chipping or movement, it is possible to recognize the image based on a wide field of view. It is possible to improve the recognition accuracy.
  • the obtained image is processed by the server 56 for a plurality of sterilizers 10 installed along the movement path, and the irradiation is excluded.
  • the server 56 By recognizing the irradiation target and the irradiation target area together with the area, the entire article can be sterilized with the optimum intensity by controlling the sterilization irradiation time or the irradiation output for each irradiation exclusion area or each irradiation target area.
  • the server can control not only the irradiation area and irradiation time of all sterilizers but also the light source such as the composite wavelength generator, it is appropriate for improving the efficiency of lighting and for the recognized object. Irradiation and analysis with various wavelengths, imaging, recognition, tracking, etc. are also possible.
  • FIG. 6 is a diagram showing a virus or the like sterilizing device 60 according to the sixth embodiment.
  • the beam emitted from the O point of the sterilizer 10 is reflected by the P point (reflection point) of the reflector 58 at an arbitrary position, and is an irradiation exclusion target.
  • one or more arbitrary number of light receiving devices 67-1, 67-2, ... Are added to the sterilizing devices of the second to fourth embodiments.
  • the light receiving device 67 can also serve as the light receiving devices 37 and 47 used in the third embodiment and the fourth embodiment.
  • the thick solid line OPQ represents a beam irradiated from the point O of the sterilizer 10 and reflected at the point P of the reflector 58 to irradiate the point Q of the irradiation exclusion target 62.
  • the alternate long and short dash line QR represents a beam in which this beam is reflected at the Q point and reaches the R point of the light receiving element 67-1.
  • the irradiation beam is P of the reflector. It is possible to detect that the light is reflected at a point and is incident on the Q point to be excluded from irradiation.
  • the sterilizer 10 since the positions (X, Y) of the point P reflecting the beam are known, it is possible to record that there is a reflector at the point P. Therefore, in the next and subsequent scans, the brightness of the beam with respect to the P point can be reduced or turned off in the output intensity.
  • the irradiation detection from the P point to the Q point to be excluded from irradiation not only the direct reflection from the P point but also the ultraviolet light reaching the Q point due to the diffused reflection from the P point via other points. , It can be detected by setting the threshold value appropriately.
  • the beam is scanned with an intensity that is safe even if the irradiation exclusion target 62 is directly irradiated, and the position information of the point P of the reflector 58 is recorded.
  • the brightness of the beam with respect to the P point of the recorded reflector 58 is lowered or turned off. In other areas, the brightness of the beam is arbitrarily increased (for example, increased from several times to several tens of times) for irradiation. (3) Repeat (1) and (2).
  • the irradiation exclusion target is irradiated with a safe intensity or zero, and the area other than the irradiation exclusion area is covered. It is possible to irradiate with a beam with high brightness. This makes it possible to significantly shorten the sterilization time in the sterilization plane A and the sterilization space S.
  • Visible light or infrared light may be used instead of ultraviolet light for the beam of (1). If you don't use UV light, you don't have to worry about UV exposure. Further, in the case of visible light, not only the place exposed to ultraviolet rays (not visible) can be visually observed by visible light, but also a general visible light receiving element can be used as the light receiving element instead of the ultraviolet light receiving element. can.
  • the sterilization plane A (abcd) is formed on the two-dimensional light receiving element 67.
  • the image data of the sterilization plane A can be acquired.
  • the irradiation region and the irradiation exclusion region can be distinguished.
  • the sterilization plane A irradiated by the sterilizer 10 By comparing the sterilization plane A irradiated by the sterilizer 10 with the obtained irradiation region, it is possible to calculate the cumulative irradiation amount, detect an irradiation abnormality, and detect a failure.
  • the average irradiation light amount may be suppressed by changing the irradiation time and frequency.
  • the threshold value setting process is performed in real time or periodically for the signal obtained by the light receiving element 67. You may go to the target. Techniques such as signal processing, image processing, and AI can be used for the threshold value setting processing.
  • the irradiation intensity is not harmful to the irradiated object based on the recognition result of the object.
  • sterilization equipment is installed so that even the transported items moved by belt conveyors, etc., will not be shaded by ultraviolet irradiation, and the irradiation time will be controlled to ensure safety. In addition, it is possible to continuously sterilize bacteria and viruses adhering to the transported material.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

La présente invention a pour but de fonctionner constamment à la fois dans des espaces où des personnes et des animaux ne sont pas présents et dans des espaces où des personnes et des animaux sont présents (dans des espaces intérieurs/extérieurs, des espaces à l'intérieur de corps mobiles tels que des voitures, des trains et des avions), et de stériliser efficacement des bactéries et des virus attachés à des marchandises (y compris des denrées périssables telles que des fruits, des légumes et des poissons) et des bactéries et des virus flottant dans des espaces, sans nuire aux humains ou aux animaux. La solution selon l'invention porte sur un système de projection de lumière ultraviolette dans lequel une lumière ultraviolette est formée en tant que faisceau et projetée par balayage, ou un système de projection de lumière ultraviolette dans lequel une image sur un dispositif de génération de rayons ultraviolets est projetée par l'intermédiaire d'une lentille en tant qu'irradiation de surface, et la réalisation d'un traitement de stérilisation par réglage à zéro ou réduction de la quantité de lumière selon une région d'exclusion d'irradiation prédéterminée, ou une région d'exclusion d'irradiation obtenue par reconnaissance d'image ou similaire.
PCT/JP2020/041131 2020-09-09 2020-11-02 Dispositif de stérilisation de virus et de bactéries WO2022054298A1 (fr)

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JP2020151683 2020-09-09
JP2020-151683 2020-09-09
JP2020180727A JP7150285B2 (ja) 2020-09-09 2020-10-28 ウイルス及び細菌の殺菌装置
JP2020-180727 2020-10-28

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116271157A (zh) * 2022-12-21 2023-06-23 湖南普斯赛特光电科技有限公司 一种移动检测杀菌方法与杀菌系统
WO2024051774A1 (fr) * 2022-09-07 2024-03-14 海信冰箱有限公司 Réfrigérateur et procédés de commande de stérilisation associés

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