CN115154638A - Sterilization apparatus and control method - Google Patents
Sterilization apparatus and control method Download PDFInfo
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- CN115154638A CN115154638A CN202210792309.3A CN202210792309A CN115154638A CN 115154638 A CN115154638 A CN 115154638A CN 202210792309 A CN202210792309 A CN 202210792309A CN 115154638 A CN115154638 A CN 115154638A
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- 230000001954 sterilising effect Effects 0.000 title claims abstract description 164
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 144
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000001580 bacterial effect Effects 0.000 claims abstract description 26
- 241000894006 Bacteria Species 0.000 claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 23
- 239000000443 aerosol Substances 0.000 claims description 16
- 230000001276 controlling effect Effects 0.000 claims description 10
- 230000002070 germicidal effect Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 claims description 2
- 230000005855 radiation Effects 0.000 abstract description 11
- 238000001179 sorption measurement Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 231100000627 threshold limit value Toxicity 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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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
- A61L2/24—Apparatus using programmed or automatic operation
-
- 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—Ultra-violet radiation
-
- 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
- A61L2/26—Accessories or devices or components used for biocidal treatment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
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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
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
Abstract
The invention relates to a sterilization device and a control method, wherein the control method comprises the following steps: monitoring whether a sterilized object exists in an irradiation area of the sterilizing device, and if so, acquiring a linear distance between the sterilized object and the sterilizing device in real time; acquiring the concentration of bacteria in the air in real time; and adjusting the irradiation power of the sterilization device in real time according to the linear distance and the bacterial concentration. By acquiring the linear distance between the sterilized object and the sterilizing device and adjusting the irradiation power of the sterilizing device in real time according to the linear distance, the sterilizing device can continuously sterilize without the problem of overproof radiation dose.
Description
Technical Field
The invention relates to the technical field of sterilization and disinfection, in particular to a sterilization device and a control method.
Background
Ultraviolet (UV) has the function of sterilization and disinfection, and has a wavelength range of 100nm to 400nm, wherein the UV having a wavelength range of 200nm to 280nm is called UVC, and may also be called short wave UV. It is now demonstrated that UVC can directly irradiate human and other organisms without causing harm to the irradiated human and other organisms. Some existing UVC sterilization products have the phenomenon that the radiation dose of sterilization equipment exceeds the standard, and even can cause human body injury. Some UVC sterilization products control the irradiation dose by controlling the switching time of UVC, but the switching time is not easy to control, the sterilization effect cannot be achieved due to short time, the radiation dose can exceed the standard due to long time, and continuous sterilization can be influenced due to repeated switching.
Disclosure of Invention
In view of the above, it is necessary to provide a sterilization apparatus and a control method for solving the problem that the conventional UVC sterilization is not easy to control the irradiation dose.
A method of controlling a sterilization apparatus, comprising: monitoring whether a sterilized object exists in an irradiation area of the sterilizing device, and if so, acquiring a linear distance between the sterilized object and the sterilizing device in real time; acquiring the concentration of bacteria in the air in real time; and adjusting the irradiation power of the sterilization device in real time according to the linear distance and the bacterial concentration.
In one embodiment, the straight-line distance is the shortest connecting line length between the sterilization light source and the object to be sterilized in the sterilization device.
In one embodiment, the real-time acquisition of the linear distance between the sterilized object and the sterilizing device comprises one of the following modes:
transmitting an infrared light signal to the sterilized object, receiving the reflected infrared light signal, and acquiring the linear distance according to the time difference between the time of transmitting the infrared light signal and the time of receiving the reflected infrared signal;
and transmitting sound wave information to the sterilized object, receiving the reflected sound wave signal, and acquiring the linear distance according to the time difference between the time of transmitting the sound wave signal and the time of receiving the reflected sound wave signal.
In one embodiment, the linear distance is obtained according to the following formula:
D＝c×(t2-t1)
wherein D is a linear distance, c is a light velocity or a sound velocity, t1 is a signal transmission time, and t2 is a time of receiving a reflected signal.
In one embodiment, the real-time adjustment of the irradiation power of the sterilization device according to the linear distance and the bacterial concentration comprises: and adjusting the irradiation power of the sterilization device to the sterilized object and the irradiation power of the sterilization device to the air in real time.
In one embodiment, the adjusting the irradiation power of the sterilization device in real time according to the linear distance and the bacterial concentration includes: when the sterilized object exists in the irradiation area, if the irradiation power output according to the bacterial concentration is larger than the irradiation power output according to the linear distance, the sterilization device outputs the irradiation power according to the linear distance.
In one embodiment, the real-time adjustment of the irradiation power of the sterilization device according to the linear distance comprises: the irradiation power of the sterilization apparatus decreases as the linear distance becomes smaller, whereas the irradiation power of the sterilization apparatus increases as the linear distance becomes larger.
According to the control method of the sterilization device, the linear distance between the sterilized object and the sterilization device is obtained, and the irradiation power of the sterilization device is adjusted in real time according to the linear distance, so that the sterilization device can continuously sterilize without the problem of overproof radiation dose.
A sterilization device, comprising: the sterilization module is used for providing a sterilization light source, and the wavelength range of the sterilization light source is 200-405nm; the induction module is used for detecting a sterilized object in an irradiation area of the sterilizing device; the distance measurement module is used for detecting distance information between the sterilized object in the irradiation area of the sterilization device and the sterilization device; the bacteria aerosol detection module is used for detecting the concentration of bacteria in the air; and the control module is used for regulating and controlling the irradiation power of the sterilization module in real time according to the distance information and the bacteria concentration.
In one embodiment, the system further comprises an IOT module connected to the bacterial aerosol detection module and the control module, respectively.
In one embodiment, the sterilization device further comprises a UVC power supply module, and the UVC power supply module is respectively connected with the control module and the sterilization module.
Drawings
Fig. 1 is a schematic view of a sterilization apparatus according to an embodiment of the present invention.
Fig. 2 is a functional block diagram of a sterilization apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Referring to fig. 1, fig. 1 shows a schematic structural diagram of a sterilization apparatus according to an embodiment of the present invention. The sterilization device is used for providing a sterilization source to sterilize and disinfect sterilized objects, and the sterilized objects can be human bodies or other organisms. The sterilization device comprises a shell 100 and functional components, wherein the shell 100 is provided with a mounting rack 110 for mounting the shell 100 on a working platform such as a wall surface, a cylindrical surface and the like. The housing 100 has a cavity therein, and some of the components in the functional assembly are located in the housing 100. In practical applications, when the object to be sterilized is a human body, the sterilization apparatus may perform a human body sterilization mode on the human body.
Referring to fig. 2, fig. 2 is a functional block diagram of a sterilization apparatus according to an embodiment of the present invention, which includes a sensing module 10, a distance measuring module 20, a control module 30, a sterilization module 40, a UVC power supply module 50, and a bacterial aerosol detection module 60. Sensing module 10, ranging module 20, sterilization module 40 and bacterium aerosol detection module 60 are all connected with control module 30 respectively. Referring to fig. 1, the sensing module 10, the distance measuring module 20, the sterilization module 40, and the bacterial aerosol detection module 60 (not shown in fig. 1) are all located on the casing 100 and exposed outside the casing 100; the control module 30 is located within the cavity of the housing 100. The positions of the sensing module 10, the ranging module 20, and the sterilization module 40 on the housing 100 are not limited to those shown in fig. 1. The control module 30 is configured to obtain the detection information of the sensing module 10, the detection information of the ranging module 20, and the detection information of the bacterial aerosol detection module 60, and analyze and process the relevant detection information to regulate and control the irradiation power of the sterilization module 40, so that the irradiation power of the sterilization module 40 changes in real time according to the position change of the object to be sterilized. The sterilization device can be applied to the places such as restaurants, offices, hospitals, meeting halls and the like. In one embodiment, the sterilization device may be disposed above the seats in the plurality of locations.
The sterilization module 40 includes a sterilization light source, such as an ultraviolet light source, for emitting ultraviolet light having a sterilization and disinfection effect. The germicidal light source may be selected from ultraviolet light having a wavelength in the range of 200nm to 405 nm. Further, the germicidal light source is selected from the far ultraviolet light with the wavelength range of 220 nm to 230 nm. The effective area where the germicidal light source can act on the object to be sterilized is called an irradiation area.
The UVC power module 50 is connected to the control module 30 and the sterilization module 40, respectively. The UVC power module 50 supplies power to the sterilization module 40 under the control of the control module 30, or powers off the sterilization module 40, or adjusts the power supply of the sterilization module 40 to change the irradiation power of the sterilization module 40.
The sensing module 10 is connected to the control module 30, and is configured to detect information of an object to be sterilized in an irradiation area of the sterilization apparatus, and send a detection result to the control module 30 for processing. The sensing module 10 may employ an infrared sensor, an image collector, a radar sensing lamp, and the like. In the present embodiment, an infrared sensor is used to measure the surface temperature of the object to be sterilized by using infrared rays to detect whether the object to be sterilized enters the irradiation region.
The distance measuring module 20 is connected to the control module 30, and is configured to detect distance information between the object to be sterilized and the sterilization apparatus in the irradiation area of the sterilization apparatus, and send a detection result to the control module 30 for processing to obtain a linear distance between the object to be sterilized and the sterilization apparatus. The straight-line distance is the length of the shortest connecting line between the sterilized object and the ultraviolet light source in the irradiation area of the sterilizing device, and is not the vertical distance. For example, in the case of a restaurant, different objects to be sterilized, such as children or adults, are seated on the same seat, and the shortest connecting line between the children and the adults from the ultraviolet light source has different lengths, i.e., different straight-line distances.
In one embodiment, the distance measuring module 20 employs an infrared distance measuring sensor, and the infrared distance measuring sensor is connected to the control module 30. When the sterilized object exists in the irradiation area, the infrared ranging sensor emits an infrared light signal to the sterilized object under the control of the control module 30, the infrared light signal is reflected and received by the infrared ranging sensor after being irradiated on the sterilized object, and the control module 30 obtains the linear distance value after processing the time difference data according to the time difference between the emission time of the infrared light signal and the time of receiving the reflected infrared light signal. In another embodiment, the distance measuring module 20 may further employ an ultrasonic distance measuring sensor, when there is an object to be sterilized in the irradiation area, the ultrasonic distance measuring sensor transmits ultrasonic waves to the object to be sterilized under the control of the control module 30, when the ultrasonic waves hit the object to be sterilized, the ultrasonic waves immediately return to form transmitted waves, and the control module 30 obtains the linear distance value according to a time difference between a time when the ultrasonic waves are transmitted and a time when the reflected waves are received, and after processing the time difference data.
The bacterial aerosol detection module 60 is connected to the control module 30. The bacteria aerosol detection module 60 is used for detecting the bacteria concentration in the air in the irradiation region and feeding back the detection result to the control module 30, so that the control module 30 regulates and controls the irradiation power of the sterilization module 40 for air sterilization according to the bacteria concentration to sterilize the air.
The implementation of the aerosol detection module 60 to detect the concentration of bacteria is not particularly limited. For example, in one embodiment, an air sampler is disposed in the housing 100, a layer of adsorption net is disposed on the housing 100 corresponding to the air sampler, and fluorescent material is disposed on the adsorption net, so that when air passes through the adsorption net under the suction force of the air sampler, the suspended material with bacteria in the air adheres to the fluorescent material. The air with the fluorescent substance is irradiated to generate fluorescence, the number of fluorescence points is obtained, and the bacteria concentration is obtained after the fluorescence points are processed by the control module 30.
The control module 30 includes a Microcontroller (MCU). The microcontroller is used for receiving and processing the detection data of the sensing module 10, the distance measuring module 20 and the bacterial aerosol detection module 60, and regulating and controlling the irradiation power of the sterilization module 40. The irradiation power of the sterilization module 40 includes irradiation power to the object to be sterilized and irradiation power to the air. The sterilization light source for performing irradiation sterilization on the object to be sterilized and for performing irradiation sterilization on air may use the same sterilization light source. When the sterilized object exists in the irradiation area, the irradiation power of the sterilization light source is limited to be not more than the radiation dose received by the sterilized object, and further, the sterilization device outputs the irradiation power according to the linear distance. When the sterilized object does not exist in the irradiation area, the irradiation power of the sterilization light source can be regulated and controlled in real time according to the bacteria concentration without being limited by the radiation dose of the sterilized object.
When the sterilized object exists in the irradiation area, if the shortest connection length between the ultraviolet light source and the sterilized object located in the irradiation area of the sterilization apparatus is short, the sterilization module 40 outputs a small irradiation power under the control of the control module 30. On the contrary, if the length of the shortest connection line between the ultraviolet light source and the object to be sterilized located in the irradiation area of the sterilization apparatus is longer, the sterilization module 40 outputs a larger irradiation power under the control of the control module 30. The irradiation power is regulated and controlled according to the linear distance, so that the sterilization effect can be ensured, and the irradiation dose cannot exceed the standard.
When the object to be sterilized is a person, the limit value of the radiation dose may be obtained according to the latest Threshold Limit Values (TLVs) and the manual of biological contact indexes (BEIs), and the limit value is used as the reference value of the irradiation power of the sterilization module 40, so as to ensure that the control module 30 does not damage the object to be sterilized while adjusting the irradiation power in real time. For example, the reference radiation dose is 478mJ/cm 2 In this case, the sterilization apparatus of the present embodiment may set the radiation power according to the radiation dose value.
Referring to fig. 2, the sterilizer further includes an IoT (Internet of things) module 70, and the IoT module 70 is connected to the bacterial aerosol detection module 60 and the control module 30, respectively. IoT module 70 is configured to send the bacteria concentration data detected by bacteria aerosol detection module 60 to control module 30, so as to exchange the bacteria concentration data in the air with control module 30 in real time, so that control module 30 can adjust the sterilization power of sterilization module 40 in real time. The IoT module 70 may also feed back the bacteria concentration data to the user through associated electronics.
The sterilization device is further provided with a dial switch, and the dial switch is connected with the control module 30 and used for manually controlling the sterilization module 40 to be turned on and off. When the linear distance between the sterilization module 40 and the object to be sterilized is constant, the irradiation power of the sterilization module 40 is relatively constant, and the sterilization module 40 can be turned on or off by manually operating the dial switch.
The invention also provides a control method of the sterilization device. The sterilization device comprises an induction module 10, a distance measurement module 20, a control module 30, a sterilization module 40 and the like, and the control method of the sterilization device comprises the following steps:
s100, monitoring whether a sterilized object exists in an irradiation area of the sterilizing device, and if the sterilized object is detected, acquiring a linear distance between the sterilized object and the sterilizing device in real time;
meanwhile, the bacterial concentration in the air is obtained in real time.
S200, adjusting the irradiation power of the sterilization device in real time according to the linear distance and the bacterial concentration.
Wherein, adjust sterilizing equipment's irradiation power in real time according to linear distance and bacterial concentration includes: when the sterilized object exists in the irradiation area, if the irradiation power output according to the bacterial concentration is larger than the irradiation power output according to the linear distance, the sterilization device outputs the irradiation power according to the linear distance. The damage of the sterilized object caused by the exceeding of the radiation dose is avoided. And if the sterilized object does not exist in the irradiation area, the sterilization device outputs irradiation power according to the bacterial concentration.
According to the control method of the sterilization device, when the sensing module 10 detects the sensing signal of the object to be sterilized, it indicates that the object to be sterilized enters the irradiation sterilization range of the sterilization device. The sensing module 10 sends the monitored sensing signal to the control module 30, and the control module 30 controls the ranging module 20 to start. The distance measuring module 20 feeds back information of the distance between the detected object to be sterilized and the sterilizing apparatus to the control module 30, and the control module 30 calculates the linear distance between the object to be sterilized and the sterilizing apparatus according to the distance information. The control module 30 regulates the irradiation power of the sterilization apparatus based on the linear distance. The irradiation power is adjusted in time, and the problem that the irradiation dose exceeds the standard can not occur.
In this embodiment, when the object to be sterilized is located in the irradiation region, the irradiation power of the sterilization apparatus is adjusted in a manner that, if the linear distance is large, the irradiation power of the sterilization apparatus is increased; if the linear distance is small, the irradiation power of the sterilization apparatus becomes small. When no object to be sterilized exists in the irradiation area, the irradiation power of the sterilization device is adjusted according to the principle that if the bacterial concentration is higher, the irradiation power of the sterilization device is increased; if the bacteria concentration is low, the irradiation power of the sterilization apparatus becomes low.
The distance measuring module 20 feeds back the distance information between the sterilized object and the sterilization module 40 in the irradiation area to the control module 30 in real time, so that the control module 30 can obtain the latest linear distance in time and regulate and control the irradiation power of the sterilization module 40 in the sterilization apparatus. The control method of the sterilization device can realize stepless power regulation and control, and the regulation and control result is timely, accurate and continuously changed. Even if the sterilized object stays in the irradiation area for a long time, the sterilized object cannot be damaged by irradiation.
In some scenarios, for example, in the case of position change of the same sterilized object in the irradiation region, the control method based on the sterilization apparatus can also make irradiation power adjustment in time according to the actual position of the sterilized object.
In S100, a linear distance between the object to be sterilized and the sterilization apparatus is obtained in real time, where the linear distance is a shortest connection length between an ultraviolet light source in the sterilization apparatus and the object to be sterilized. For example, the sterilizing apparatus is installed in a restaurant, the sterilizing apparatus is located on a pillar or a wall beside a seat in the restaurant, the ultraviolet light source in the sterilizing module 40 is located above the seat, and when the object to be sterilized is seated on the seat, the shortest connecting line length between the ultraviolet light source and the object to be sterilized is the linear distance.
The information on the object to be sterilized includes an infrared signal and/or an image. For example, an infrared sensor is used to monitor the change of the infrared spectrum of the sterilized object so as to judge whether the sterilized object enters the irradiation region. The camera can be used for acquiring image information to monitor whether the sterilized object enters the irradiation area.
When the infrared distance measuring sensor is used to measure the linear distance between the distance to the object to be sterilized and the sterilizing apparatus, the step of acquiring the linear distance between the object to be sterilized and the sterilizing apparatus in real time in S100 includes: an infrared distance measuring sensor emits an infrared light signal to an object to be sterilized, and the time when the infrared light signal is emitted is recorded and denoted as t1. The infrared light signal is irradiated to the object to be sterilized, reflected to the infrared distance measuring sensor, and the time when the reflected infrared light signal is received is recorded and denoted as t2. The control module calculates the linear distance according to the time difference between the time t2 and the time t1. The linear distance is calculated by the formula:
D＝c×(t2-t1)
where D is the linear distance, c is the speed of light, t1 is the time when the infrared light signal is emitted, and t2 is the time when the reflected infrared light signal is received.
The measurement of the linear distance is not limited to the above-described method using the infrared distance measuring sensor. When a linear distance between a sterilization target distance and a sterilization apparatus is measured by an ultrasonic distance measuring sensor, c in the calculation formula D = c × (t 2-t 1) is a sound velocity, t1 is a time when an ultrasonic signal is transmitted, and t2 is a time when a reflected wave signal is received.
The method for acquiring the concentration of bacteria in the air in the irradiation area can be various, and in the embodiment: the bacterial concentration is obtained using the aerosol detection module 60. After air in the irradiation area passes through an adsorption net on the sterilization device under the air exhaust power of the atmosphere sampler, suspended matters with bacteria attached to the air can carry fluorescent substances preset on the adsorption net, aerosol passing through the adsorption net is collected and excited to generate fluorescence with corresponding wavelength, the number of fluorescent points is obtained and is processed by the control module 30 to obtain the bacterial concentration, and the control module 30 regulates and controls the sterilization module 40 to output irradiation power corresponding to the bacterial concentration so as to sterilize the air.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. A method for controlling a sterilization apparatus, comprising:
monitoring whether a sterilized object exists in an irradiation area of the sterilizing device, and if so, acquiring a linear distance between the sterilized object and the sterilizing device in real time;
acquiring the concentration of bacteria in the air in real time;
and adjusting the irradiation power of the sterilization device in real time according to the linear distance and the bacterial concentration.
2. The method of claim 1, wherein the linear distance is a shortest connection length between a germicidal light source and a target object in the germicidal device.
3. The method for controlling a sterilization apparatus according to claim 1, wherein the obtaining of the linear distance between the object to be sterilized and the sterilization apparatus in real time comprises one of:
transmitting an infrared light signal to the sterilized object, receiving the reflected infrared light signal, and acquiring the linear distance according to the time difference between the time of transmitting the infrared light signal and the time of receiving the reflected infrared signal;
and transmitting sound wave information to the sterilized object, receiving a reflected sound wave signal, and acquiring the linear distance according to the time difference between the time of transmitting the sound wave signal and the time of receiving the reflected sound wave signal.
4. The method of controlling a sterilizer according to claim 3, wherein the linear distance is obtained according to the following formula:
D＝c×(t2-t1)
wherein D is a linear distance, c is a light velocity or a sound velocity, t1 is a signal transmission time, and t2 is a time of receiving a reflected signal.
5. The method of claim 1, wherein adjusting the irradiation power of the sterilization apparatus in real time according to the linear distance and the bacterial concentration comprises:
and adjusting the irradiation power of the sterilization device to the sterilized object and the irradiation power of the sterilization device to the air in real time.
6. The method of claim 5, wherein adjusting the irradiation power of the sterilization apparatus in real time according to the linear distance and the bacterial concentration comprises:
when the sterilized object exists in the irradiation area, if the irradiation power output according to the bacterial concentration is larger than the irradiation power output according to the linear distance, the sterilization device outputs the irradiation power according to the linear distance.
7. The method for controlling a sterilization apparatus according to claim 1, wherein adjusting the irradiation power of the sterilization apparatus in real time according to the linear distance comprises:
the irradiation power of the sterilization apparatus decreases as the linear distance becomes smaller, whereas the irradiation power of the sterilization apparatus increases as the linear distance becomes larger.
8. A sterilization apparatus, comprising:
the sterilization module is used for providing a sterilization light source, and the wavelength range of the sterilization light source is 200-405nm;
the induction module is used for detecting a sterilized object in an irradiation area of the sterilizing device;
the distance measurement module is used for detecting distance information between a sterilized object in an irradiation area of the sterilization device and the sterilization device;
the bacteria aerosol detection module is used for detecting the concentration of bacteria in the air;
and the control module is used for regulating and controlling the irradiation power of the sterilization module in real time according to the distance information and the bacteria concentration.
9. The sterilization apparatus according to claim 8, further comprising an IOT module connected to the bacterial aerosol detection module and the control module, respectively.
10. The sterilization apparatus of claim 8, further comprising a UVC power module connected to the control module and the sterilization module, respectively.
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| CN202210792309.3A CN115154638A (en) | 2022-07-07 | 2022-07-07 | Sterilization apparatus and control method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113101388A (en) * | 2021-05-11 | 2021-07-13 | 成都新澳冠医疗器械有限公司 | Ultraviolet lamp sterilization device and control method thereof |
| WO2021179474A1 (en) * | 2020-03-13 | 2021-09-16 | 浙江维尔科技有限公司 | Method for automatically controlling ultraviolet irradiation dosage, and ultraviolet disinfection and sterilization device |
| CN215187507U (en) * | 2021-03-09 | 2021-12-14 | 中电海康集团有限公司 | Self-adaptive ultraviolet sterilization control device |
| CN113876972A (en) * | 2020-07-01 | 2022-01-04 | 华润微电子控股有限公司 | Deep ultraviolet LED killing device and method for killing new coronavirus |
| KR20220057957A (en) * | 2020-10-30 | 2022-05-09 | 주식회사 헬로우미스터리 | Germicidal lighting system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021179474A1 (en) * | 2020-03-13 | 2021-09-16 | 浙江维尔科技有限公司 | Method for automatically controlling ultraviolet irradiation dosage, and ultraviolet disinfection and sterilization device |
| CN113876972A (en) * | 2020-07-01 | 2022-01-04 | 华润微电子控股有限公司 | Deep ultraviolet LED killing device and method for killing new coronavirus |
| KR20220057957A (en) * | 2020-10-30 | 2022-05-09 | 주식회사 헬로우미스터리 | Germicidal lighting system |
| CN215187507U (en) * | 2021-03-09 | 2021-12-14 | 中电海康集团有限公司 | Self-adaptive ultraviolet sterilization control device |
| CN113101388A (en) * | 2021-05-11 | 2021-07-13 | 成都新澳冠医疗器械有限公司 | Ultraviolet lamp sterilization device and control method thereof |
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