JP7564661B2 - Mobile disinfection equipment and indoor disinfection systems - Google Patents

Description

The present invention relates to a mobile sterilization device and an indoor sterilization system.

When people enter and leave a room, they may bring in particles of viruses, bacteria, pollen, etc. that have been attached to people outside. Or, when a person carrying a virus or bacteria coughs or talks, droplets containing the virus or bacteria particles may be dispersed indoors.
In this way, the particles that are brought into a room and dispersed will either adhere to walls or ceilings and remain there, or float in the air for a certain period of time before falling and eventually accumulating on floors, desks, etc. Furthermore, particles that have accumulated or adhered to floors or walls will be dispersed back into the air by people walking or touching them.

Fine particles suspended in the air can be taken into the body through a person's nose or mouth, or fine particles attached to a wall or desk can be carried to the vicinity of a person's mouth (mucous membrane) through contact with a person's hands and taken into the body. This can cause allergies if the fine particles are allergens such as pollen or mites, or can cause infectious diseases caused by viruses or bacteria if the fine particles are viruses or bacteria.
Therefore, in order to suppress the onset and spread of allergies and infectious diseases, and to prevent the spread of infection, it is effective to collect and remove fine particles floating indoors, and to remove fine particles that have accumulated on floors and desks.

In response to this, mobile objects have been proposed that can disperse ions or chemicals into space depending on the presence or absence of people and their actions without harming people, and can decompose and decontaminate viruses and bacteria in the air.
For example, Patent Document 1 describes a self-propelled electronic device that "performs an ion generator that releases ions or performs cleaning,""obtains information about the presence of people in the vicinity of the outside of the housing based on an output signal from a human presence sensor,""releases an airflow containing ions from an exhaust port based on the surrounding environment," and "disperses ions throughout the room, improving sterilization and deodorization effects."

Furthermore, Patent Document 2 describes a cleaning robot with a pesticide spraying function that "has a storage section for storing pesticides" and "sprays the pesticides stored in the storage section from an exhaust port together with the exhaust generated by the rotation of a fan motor, thereby spraying the pesticides throughout the room."
Furthermore, in order to efficiently collect fine particles in the air, mobile air purifiers that can purify the air in accordance with people's movements have been proposed.
For example, Patent Document 3 describes a mobile air purifier that is "equipped with a human detection means for detecting whether or not a person is present" and "a control means for controlling a drive motor and a fan motor based on information from the human detection means."

Patent No. 2013-230201 JP 2006-130005 A JP 2020-038035 A

However, because the concentration of fine particles in the air is very low, even if ions or chemicals are sprayed into the air, the ions or chemicals do not necessarily act on the fine particles, making it difficult to inactivate or decompose airborne fine particles such as viruses and bacteria.

In addition, devices that sterilize objects using ultraviolet light or chemicals can only sterilize the area that the ultraviolet light can irradiate, and therefore cannot sterilize areas that the ultraviolet light or chemicals cannot reach.
In addition, devices that sterilize objects outside the main unit cannot spray chemicals that are harmful to people in spaces where people are present, so they can only operate in spaces where no people are present or in areas where they will not affect people.

Furthermore, while typical free-standing air cleaners can collect fine particles suspended in the air, they cannot collect fine particles that have fallen to and adhere to the floor.
Problems with the devices described in Patent Documents 1 to 3 will be described below.
The self-propelled electronic device described in Patent Document 1 emits ions into the air, but as mentioned above, it is difficult to inactivate or decompose airborne particles such as viruses and bacteria. Also, although it is possible to clean up particles on the floor, it is not possible to collect particles in the air.

The cleaning robot with a chemical spraying function described in Patent Document 2 is effective when spraying chemicals to exterminate pests, as described in the document, as the sprayed chemicals spread. However, even if a chemical effective for sterilization is sprayed in a similar manner, it is difficult to directly contact airborne particles such as viruses and bacteria to inactivate or decompose them. In addition, chemicals can be used to sterilize areas where they adhere to walls by adhering to them, but spraying the chemical in a mist may sterilize areas where the chemical adheres, but not areas where the chemical does not adhere. For this reason, it is difficult to sterilize the entire target, and wiping is necessary.

The mobile air purifier described in Patent Document 3 is capable of collecting fine particles such as pollen suspended in the air, but is unable to remove or sterilize fine particles attached to wall surfaces.
As described above, devices equipped with a mechanism for sterilizing objects by spraying or irradiating them with ions, chemicals, ultraviolet rays, etc., are capable of sterilizing objects that come into contact with them, but are unable to collect or sterilize fine particles suspended in the air.
As described above, conventional devices cannot simultaneously sterilize objects that they come into contact with and collect and sterilize fine particles suspended in the air.

The present invention was devised in light of the above situation, and aims to provide a mobile sterilization device and an indoor sterilization system that can collect and separate and desterilize fine particles.

In order to solve the above problems, the mobile sterilization device of the present invention comprises a sensor that detects people, a dust collection means that collects fine particles floating in the air, a sterilization means that irradiates ultraviolet light to decompose or inactivate at least one of viruses and bacteria, a mobile means capable of autonomous travel, and a control means that receives the detection contents of the sensor and controls the dust collection means, the sterilization means, and the mobile means, the control means comprising a map creation means and switching between and operating the dust collection means and the sterilization means depending on the detection contents of the sensor, the sensor being a camera that detects visible light, and the control means estimates the shape and size of the room, as well as its own position within the room, by detecting lines formed between walls, lines formed between walls and the floor, and lines formed between walls and the ceiling from an image of the entire room taken by the camera.

The present invention provides a mobile sterilization device and an indoor sterilization system that can collect, decompose, or inactivate fine particles.

FIG. 1 is a schematic diagram of a mobile sterilization device according to a first embodiment of the present invention. FIG. 1 is a perspective view showing an example of a mobile sterilization apparatus according to a first embodiment of the present invention, viewed from below. FIG. 2 is a control block diagram of the mobile sterilization device according to the first embodiment of the present invention. FIG. 1 is a schematic diagram of the mobile sterilization device 1 of the first embodiment of the present invention during operation when a user is present in a room. FIG. 1 is a schematic diagram of the mobile sterilization device 1 of the first embodiment of the present invention during operation when a user is not present. 3 is a flowchart of a mobile sterilization device according to embodiment 1 of the present invention. FIG. 13 is a perspective view of a mobile sterilization device equipped with a distance sensor according to another example of embodiment 1. FIG. 5 is a schematic diagram of a fixed sterilization device constituting an indoor sterilization system according to a second embodiment of the present invention. FIG. 11 is a schematic diagram showing the operation of an indoor sterilization system according to a second embodiment of the present invention when a user is present in the room. FIG. 11 is a schematic diagram showing the operation of the indoor sterilization system according to the second embodiment of the present invention when a user is not present in the room. FIG. 6 is a control block diagram of an indoor sterilization system according to a second embodiment of the present invention. 11 is a flowchart showing the control of an indoor sterilization system according to a second embodiment of the present invention. FIG. 11 is a schematic diagram of an indoor sterilization system according to a third embodiment of the present invention during operation. FIG. 13 is a schematic diagram of a mobile sterilization device according to a fourth embodiment of the present invention. FIG. 11 is a schematic diagram showing the operation of an indoor sterilization system according to another embodiment of the present invention when a user is present in the room. FIG. 11 is a schematic diagram showing the operation of an indoor sterilization system according to another embodiment of the present invention when a user is present in the room.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate.
<<Embodiment 1>>
FIG. 1 is a schematic diagram of a mobile sterilization apparatus 1 according to a first embodiment of the present invention.
A mobile sterilization device 1 according to a first embodiment of the present invention will be described.

[Overall configuration]
First, the configuration of a mobile sterilization apparatus 1 according to the first embodiment of the present invention will be described with reference to FIG.
The mobile sterilization device 1 includes an ultraviolet irradiating section 11, an intake port 12, and an exhaust port 13 on the outer shell of a main body 1H, and includes drive wheels 16 on the lower side of the main body. The mobile sterilization device 1 can move autonomously by the drive wheels 16 of the moving means.

The ultraviolet irradiating unit 11, which is a sterilizing means, irradiates ultraviolet light 101. By irradiating the ultraviolet light 101, viruses and bacteria attached to the surface of the irradiation target can be decomposed, antibacterial (disinfected), or inactivated.
The mobile sterilization device 1 includes therein a centrifugal impeller 14, a filter 15, a control unit 110, a communication unit 111, a human detection sensor 112, and a dust sensor 113.

The centrifugal impeller 14 is a dust collecting means. By operating the centrifugal impeller 14, intake air 102 containing dust on the floor surface Y is taken in through the intake port 12. The dust is removed from the sucked air by the filter 15. Then, the clean air 103 that has been purified through the filter 15 is discharged from the exhaust port 13.
The filter 15 is a fine-mesh filter such as a ULPA filter or a HEPA filter, and is capable of collecting fine particles such as viruses and bacteria.
[Floor brush]

FIG. 2 shows a perspective view of an example of the mobile sterilization apparatus 1 according to the first embodiment of the present invention, seen from below.
As shown in Figure 2, if a structure is provided with a floor brush 17 near the air intake 12 to brush away fine particles adhering to the floor surface Y, it is possible to brush away the fine particles adhering to the floor surface Y and suck them up through the air intake 12 (see Figure 1) to collect the dust.
A horizontally rotatable floor brush 17 is provided on the bottom surface 1h1 of the main body 1H of the mobile sterilization apparatus 1 between the drive wheels 16 and the air intake 12. The floor brush 17 rotates horizontally around a support shaft 17j.

By rotating the floor brush 17 parallel to the floor surface Y, fine particles adhering to the floor surface Y are stirred up, and a larger amount of fine particles can be collected from the intake port 12.
Furthermore, if an ultraviolet ray irradiation unit 11C is provided on the bottom surface 1h1 of the main body 1H, the ultraviolet ray 101C can decompose or inactivate viruses and bacteria attached to the floor surface Y. Therefore, it is preferable to install the ultraviolet ray irradiation unit 11C on the bottom surface 1h1 of the main body 1H.

FIG. 3 shows one form of a control block diagram of the mobile sterilization apparatus 1 according to the first embodiment of the present invention.
The mobile sterilization device 1 is equipped with a human detection sensor 112 and a dust sensor 113 as detection means.

The human detection sensor 112 detects the presence or absence of a person in the room, and the dust sensor 113 detects the amount of fine particles in the intake air 102 .
The mobile sterilization device 1 also includes a control unit 110 serving as a control means and a communication unit 111 serving as a communication means.
The control unit 110 can process information acquired by the sensors (112, 113) and communicate the information to the outside via the communication unit 111.

Using the above-mentioned configuration, the mobile sterilization device 1 drives the drive wheels 16 based on information detected by various sensors (112, 113) under the control of the control unit 110 to travel autonomously. Then, under the control of the control unit 110, the ultraviolet irradiation unit 11 (described as the sterilization unit in FIG. 3) irradiates ultraviolet light to inactivate and sterilize viruses, bacteria, and the like located outside the main body. Also, under the control of the control unit 110, the mobile sterilization device 1 operates the centrifugal impeller 14 (described as the dust collection unit in FIG. 3) to sweep out dust, draws in air containing dust from the air intake 12, and collects fine particles such as viruses and bacteria in the air using the filter 15.

[Control configuration]
Next, the control configuration of the mobile sterilization device 1 of the first embodiment will be described with reference to the control block diagram of FIG.
[Sensor type]
As described above, the mobile sterilization device 1 includes, as detection units, the human detection sensor 112 and the dust sensor 113. The human detection sensor 112 detects whether a user is present or not. The dust sensor 113 is configured to measure the indoor environment, such as the concentration of fine particles in the air.

The human detection sensor 112 may be a sensor of any type, but is preferably a sensor that can detect humans in a non-contact manner using radio waves such as laser, visible light, ultrasonic waves, microwaves, or millimeter waves.
For example, the human detection sensor 112 that detects the presence or absence of a user can be an infrared sensor that detects infrared rays emitted from a person, a thermopile that recognizes the shape of a person, a camera that captures an image of a person, or a distance camera that detects reflected waves of a laser or ultrasound to detect the distance to an object.

The dust sensor 113 may be any sensor capable of detecting the amount of fine particles in the air. In the first embodiment, a sensor that detects passing fine particles by light is assumed, but the type of sensor is not important as long as it can measure the indoor environment.
The sensors that detect the indoor environment include the dust sensor 113 that can measure the amount of fine particles, an odor sensor that can detect the indoor air quality, a CO2 sensor, etc. In addition, a temperature and humidity sensor, an illuminance sensor, etc. that detect the indoor usage status can be used.

By detecting the air pollution level in the room using the dust sensor 113, odor sensor, CO2 sensor, etc., it is possible to recognize whether air purification is necessary. The temperature and humidity sensor and illuminance sensor can grasp the usage status in the room.
The results of detection by the detection units (112, 113) are sent to the control unit 110. Then, in accordance with the results of detection by the detection units (112, 113), the control unit 110 drives the drive wheels 16 of the travel drive unit, the centrifugal impeller 14 of the dust collection unit, the ultraviolet irradiator 11 of the sterilization unit, and the like to control the operation of the mobile sterilization device 1.

The mobile sterilization device 1 can move freely by controlling the drive wheels 16 (see FIG. 2 ) which are the travel drive unit. Here, in the present embodiment 1, the travel drive unit is provided with the drive wheels 16 and travels on wheels, but the configuration of the travel drive unit is not limited to wheel travel, and any moving means such as crawler travel or multi-leg travel may be used.
Moreover, by driving the centrifugal impeller 14, which is a dust collecting section, air can be sucked in from the outside of the mobile sterilization device 1, and fine particles contained in the air can be collected in the filter 15. Moreover, by driving the ultraviolet ray irradiation section 11, which is a sterilization section, ultraviolet rays can be irradiated to inactivate (antibacterialize) the viruses and bacteria to be irradiated. Here, in the present embodiment 1, the ultraviolet ray irradiation section 11 is provided as the sterilization section, but it is not limited to ultraviolet rays, and may be a device that sprays a disinfectant (alcohol, hypochlorous acid water, etc.) or a device that wipes (a device that sprays chemicals).

The control unit 110 can also notify the user of the detection results of the detection units (112, 113), which are the operating status, via the communication unit 111. There is no restriction on the method of notifying the user. For example, the communication unit 111 may send data to the cloud (cloud computing) so that the user can check the information on a browser, or the communication unit 111 may send data directly to a display device such as a smartphone.

[How it works]
Next, the operation of the mobile sterilization apparatus 1 of the first embodiment will be described with reference to the operation overview diagrams of FIGS. 4A and 4B and the flowchart of FIG.
Fig. 4A shows a schematic diagram of the mobile sterilization device 1 according to the first embodiment of the present invention during operation when a user is present in the room. Fig. 4B shows a schematic diagram of the mobile sterilization device 1 according to the first embodiment of the present invention during operation when a user is absent.
FIG. 5 shows one form of a flowchart of the mobile sterilization apparatus 1 of the first embodiment.
When control is started, in step S11 of Figure 5, as shown in Figure 4A, the mobile sterilization device 1 detects a user in front of the main body 1H by radio waves 112a emitted from a detection unit such as a human detection sensor 112 provided in the main body 1H.

Similarly, the mobile sterilization device 1 recognizes its own position as follows: Then, while detecting the amount of dust with the dust sensor 113, the driving wheels 16, which are the travel driving unit, are operated in step S12 of Fig. 5 to start the cleaning operation.
[Room shape recognition and self-location estimation methods]
To detect the position of the mobile sterilization apparatus 1 within a room, the mobile sterilization apparatus 1 first acquires the shape of the room in which it will perform sterilization.

To obtain the shape of the room, an infrared sensor that detects infrared rays, a camera that detects visible light, or a distance camera that detects reflected waves from a laser or the like is used as a wireless sensor for the human detection sensor 112, or separately from the human detection sensor 112. Also, by providing the control unit 110 with a map creation means such as SLAM (Simultaneous Localization and Mapping), it is possible to detect the shape of the room and the self-position within the room separately from detecting people.

For example, if the human detection sensor 112 is a camera that detects visible light, it is possible to process the camera image to detect people, and to estimate the shape and size of the room as well as its own position within the room (the position of the mobile sterilization device 1 itself) by detecting ridgelines (lines between walls, between walls and the floor, and between walls and the ceiling) from an image of the entire room. Note that air conditioners that have the function of detecting the shape and layout of a room are known, and it is also possible to obtain the shape and layout of a room from such air conditioners via communication.

FIG. 6 shows a perspective view of a mobile sterilization device 1 equipped with a distance sensor 114 according to another example of the first embodiment.
For example, in the case of a mobile sterilization device 1 that is equipped with a laser-emitting distance sensor 114 that can view the entire room, separate from the human detection sensor 112, it is possible to detect the shape of the room and the mobile sterilization device 1's own position within the room by detecting the distance to the wall of the room using the distance sensor 114.

The mobile sterilization device 1 can record its travel trajectory by detecting the shape of the room and its own position. This allows the mobile sterilization device 1 to recognize areas where air purification and sterilization have been achieved, and to confirm that air purification and sterilization of the entire room have been completed.

In step S13 of FIG. 5, it is determined whether or not a user is present in the room.
If the user is present (YES in step S13 of FIG. 5), the following operations are carried out.

[Behavior when people are in the room]
When it is detected that a user or person is present in the room, that is, when a user is present, the centrifugal impeller 14 of the dust collection unit is operated in step S14 of FIG. 5. The mobile sterilization device 1 drives the centrifugal impeller 14, which is the dust collection unit, by the control unit 110, and takes in the intake air 102, which is air containing fine particles, from the outside into the main body 1H, as shown in FIG. 4A. Then, the mobile sterilization device 1 collects fine particles such as viruses and bacteria suspended in the air in the filter 15 (see FIG. 1 and FIG. 6), and releases clean air 103 to the outside. The mobile sterilization device 1 continues to collect dust while moving in the room by operating the drive wheels 16, and in step S15 of FIG. 5, it is determined whether the dust amount is below the standard. The standard for the dust amount is set in advance with reference to the dust amount after cleaning, etc.

When the amount of particles and dust in the intake air 102 becomes less than the reference amount (YES in step S15 in FIG. 5), it is determined that collection of particles in the air has been completed, and the control ends.
On the other hand, if the amount of fine particles and dust in the intake air 102 is not less than the reference amount (NO in step S15 in FIG. 5), the process proceeds to step S14 in FIG.
If the user is not present (NO in step S13 in FIG. 5), the following operation is carried out.

[Behavior when no one is in the room]
When no one is present in the room, and the user is absent, the sterilization unit (11) is operated in step S16 of Fig. 5. That is, as shown in Fig. 4B, the mobile sterilization device 1 drives the ultraviolet ray irradiation unit 11, which is a sterilization unit, to inactivate, decompose, or inactivate fine particles such as viruses and bacteria attached to the walls and floor Y of the room, or to the surfaces of furniture, etc. (Viruses floating in the air in the room can also be inactivated by irradiation with ultraviolet rays).
Then, in step S17 of Fig. 5, it is determined whether or not the entire room has been sterilized. As described above, the mobile sterilization device 1 (1A) can record its travel trajectory by detecting the shape of the room and its own position. This allows the mobile sterilization device 1 (1A) to recognize the areas where air purification and sterilization have been completed, and to confirm that air purification and sterilization of the entire room have been completed.

When it is determined by controlling the drive wheels 16 of the traveling drive unit that the entire room to be sterilized has been cleaned (YES in step S17 of FIG. 5), the sterilization control ends.
On the other hand, if it is not determined that the entire room has been cleaned (NO in step S17 in FIG. 5), the process proceeds to step S17 in FIG. 5 and the sterilization operation continues.

[effect]
By operating the centrifugal impeller 14 of the dust collection section when a person is present in the room, it is possible to collect fine particles and droplets dispersed in the air by human activity, and efficiently collect fine particles such as viruses and bacteria in the air. In addition, by instantly collecting fine particles dispersed by people carrying viruses or bacteria, the spread of infectious diseases in the room can be prevented.
In addition, since irradiation of ultraviolet light with a sterilizing effect on humans may cause health damage to humans, the presence or absence of a user is detected and the ultraviolet irradiation unit 11 of the sterilization unit is switched to operate. This makes it possible to sterilize viruses and bacteria without harming humans. Note that, in this configuration, only the sterilization unit (11) operates and the dust collection unit (14) does not operate when a user is absent, but there is no problem with operating the dust collection unit (14) regardless of the presence or absence of a user. Therefore, the mobile sterilization device 1 may operate the dust collection unit (14) at the same time as the sterilization unit (11), in which case it is possible to inactivate viruses and bacteria attached to objects and collect fine particles in the air at the same time.

In addition, the mobile sterilization device 1 of the first embodiment irradiates ultraviolet rays while moving around the room to decompose and deactivate fine particles, so the target area for ultraviolet irradiation is wide and can cover almost all areas where people move. Therefore, there are few areas that cannot be sterilized due to being in the blind spot of the mobile sterilization device 1.
In addition, fixed sterilization means and dust collection means must always be set in a certain area of the floor, which can take up space and get in the way. However, the mobile sterilization device 1 of the first embodiment can be operated in a required room when necessary, and can be automatically placed in a non-intrusive location when not in use, allowing sterilization of the room without getting in the way of people.

In addition, because it is mobile, one unit can be used to clean and disinfect multiple rooms. For example, by having it operate automatically at night, it is possible to automatically clean and disinfect multiple rooms, such as spaces where people are active during the day but not at night. In addition, since it can move to the most effective location to perform dust collection and disinfection operations, it has higher efficiency and dust collection and disinfection performance than fixed types, and can shorten the time required for dust collection and disinfection. In addition, it can achieve the effect of indoor disinfection with less effort required to move and operate the dust collection means and disinfection means.

As described above, the device includes a sensor (112) that detects human behavior, a dust collection unit (14) that collects fine particles suspended in the air, a sterilization unit (11) that decomposes or inactivates viruses, bacteria, etc., autonomously movable means (drive wheels 16), and a control means (control unit 110), and switches between the dust collection means and sterilization means depending on what is detected by the sensor (112). This makes it possible to remove or inactivate fine particles, viruses, and bacteria in the room regardless of whether people are present, and to prevent users living in the room from contracting infectious diseases.

According to the first embodiment, it is possible to collect and sterilize both fine particles floating in the air in accordance with human behavior and fine particles attached to the floor surface Y or wall surfaces, so it is possible to efficiently sterilize the room without harming people. This makes it possible to prevent or suppress the spread of infectious diseases caused by viruses and bacteria. As a result, by removing, decomposing (antibacterial) or inactivating fine particles such as viruses and bacteria in the room, it is possible to suppress the onset of allergic symptoms and the spread of infectious diseases.

<<Embodiment 2>>
FIG. 7 is a schematic diagram of a fixed sterilization device 2 constituting an indoor sterilization system 3 according to a second embodiment of the present invention.

FIG. 8A shows a schematic diagram of the operation of the indoor sterilization system 3 according to embodiment 2 of the present invention when a user is present in the room, and FIG. 8B shows a schematic diagram of the operation of the indoor sterilization system 3 according to embodiment 2 of the present invention when a user is absent in the room.
The indoor sterilization system 3 of embodiment 2 of the present invention is configured by combining the mobile sterilization device 1 (see Figure 1) described in embodiment 1 and the fixed sterilization device 2 (see Figure 7) of embodiment 2.

Since the mobile sterilization device 1 is the same as that described in embodiment 1, the configurations of the fixed sterilization device 2 and the indoor sterilization system 3 will be described below, focusing on the parts that differ from embodiment 1.
[Overall configuration]
The overall configuration of the indoor sterilization system 3 of the second embodiment will be described.

As shown in FIG. 8A, the indoor sterilization system 3 is composed of a mobile sterilization apparatus 1 (see FIG. 1) and a fixed sterilization apparatus 2 (see FIG. 7).
As shown in Fig. 7, the fixed sterilization device 2 includes an ultraviolet ray irradiation unit 21 as a sterilization unit, a control unit 210, and a communication unit 211. The fixed sterilization device 2 is configured to irradiate ultraviolet rays 201 from the ultraviolet ray irradiation unit 21 to the outside (room).
The fixed sterilization device 2 is installed at a high place that cannot be reached by the mobile sterilization device 1, and it is desirable that the sterilization target range of the fixed sterilization device 2 does not overlap with the sterilization target range of the mobile sterilization device 1. If the sterilization target ranges of the mobile sterilization device 1 and the fixed sterilization device 2 do not overlap, more efficient or effective sterilization can be achieved.

FIG. 9 shows one form of a control block diagram of the indoor sterilization system 3 according to the second embodiment of the present invention.
The fixed sterilization device 2 can communicate with the communication unit 111 (see FIG. 1 ) of the mobile sterilization device 1 via the communication unit 211. Based on information received from the mobile sterilization device 1, the fixed sterilization device 2 drives the ultraviolet ray irradiation unit 21, which is a sterilization unit, using the control unit 210.
In other words, the fixed sterilization device 2 is capable of operating in accordance with information detected by the human detection sensor 112 (see Figure 3) of the detection unit of the mobile sterilization device 1 and information transmitted via the communication unit 111.

As shown in Figures 8A and 8B, the mobile sterilization device 1 is installed in a movable state near the floor surface Y of the room. Meanwhile, the fixed sterilization device 2 is fixed to a wall surface K near the ceiling T of the room. The mobile sterilization device 1 moves around the room and acquires information on users in the room, the indoor environment, etc., and transmits the information to the fixed sterilization device 2 via the communication unit 111 (see Figure 9). As a result, even if the fixed sterilization device 2 shown in Figure 7 does not have a detection unit, the human detection sensor 112 in the detection unit of the mobile sterilization device 1 can recognize human behavior and operate accordingly.

[How it works]
FIG. 10 shows one form of a flowchart of the control of the indoor sterilization system 3 according to the second embodiment of the present invention.
The operation of the indoor sterilization system 3 of the second embodiment will be described.
When the indoor sterilization system 3 starts control, in steps S21 and S22 of Fig. 10, first, as shown in Fig. 8A and Fig. 8B, the mobile sterilization device 1 drives the drive wheels 16 to move around the room, detects the presence of people in the room by radio waves 112a emitted by the human detection sensor 112 of the detection unit, and recognizes its own position. The mobile sterilization device 1 also detects the amount of dust, which indicates the indoor environment, by the dust sensor 113 (see Fig. 9).

Next, in step S23, the mobile sterilization device 1 determines whether or not a user is present in the room.
When the human detection sensor 112 of the mobile sterilization device 1 detects the presence of a user in the room (YES in step S23), in step S24, the indoor sterilization system 3 operates the dust collection unit (14) of the mobile sterilization device 1 as shown in Fig. 8A. That is, the mobile sterilization device 1 drives the centrifugal impeller 14, which is the dust collection unit, by the control unit 110. As a result, intake air 102 containing fine particles is taken in from the outside into the main body 1H, fine particles such as viruses and bacteria suspended in the air are collected in the filter 15 (see Fig. 1), and clean air 103 is released to the outside. In this way, the drive wheels 16 are operated to continue dust collection while moving within the room.

Then, in step S25, it is determined whether the amount of fine particles and dust in intake air 102 is less than a reference amount (YES in step S25).
If the amount of fine particles and dust in intake air 102 becomes less than the reference amount (YES in step S25), it is determined that collection of fine particles in the air has been completed, and control ends.
If the amount of fine particles and dust in intake air 102 is not less than the standard (NO in step S25), the process proceeds to step S24 and dust collection continues while moving within the room.

On the other hand, if the human detection sensor 112 of the mobile sterilization device 1 detects that the user is absent (NO in step S23), that is, when the user is absent, in step S26, as shown in Figure 8B, the indoor sterilization system 3 operates the ultraviolet irradiating unit 11 of the sterilization unit of the mobile sterilization device 1 and the ultraviolet irradiating unit 21 of the sterilization unit of the fixed sterilization device 2.
Then, in step S27, it is determined whether the entire room has been sterilized or whether a certain period of time has elapsed.

When it is confirmed that the mobile sterilization device 1 has traveled throughout the room and sterilized the entire room, and a certain period of time that is considered to be effective for sterilization by the fixed sterilization device 2 has elapsed, or either or both of these have been achieved (YES in step S27), it is determined that the entire room has been sterilized and control is terminated. Note that it is possible to determine whether the entire room has been sterilized because the mobile sterilization device 1 has acquired the shape of the room in advance.
On the other hand, if the mobile sterilization device 1 has not traveled around the entire room to sterilize the entire room, and a certain period of time during which sterilization by the fixed sterilization device 2 is considered to be effective has not elapsed (NO in step S27), the process proceeds to step S26 and sterilization continues.

[effect]
The ultraviolet light 201 irradiated from the fixed sterilization device 2 decomposes and deactivates viruses and bacteria in the upper region of the indoor space. The ultraviolet light 101 irradiated from the mobile sterilization device 1 decomposes and deactivates viruses and bacteria mainly in the lower part of the indoor space and in parts that people come into contact with, such as furniture. Therefore, by using the spatial sterilization system 3 of the second embodiment, it is possible to thoroughly sterilize the entire upper and lower regions of the room.

Irradiating people with ultraviolet light, which has a sterilizing effect, can potentially cause health damage to the people. Therefore, the human detection sensor 112 of the mobile sterilization device 1 detects whether a user is present in the room, and switches between operating the sterilization unit (11) of the mobile sterilization device 1 and the sterilization unit (21) of the fixed sterilization device 2, making it possible to sterilize viruses and kill bacteria without harming people.

Here, when a user is not present, only the sterilization unit (11) of the mobile sterilization device 1 is operated, and the dust collection unit (14) is not operated. However, since there is no problem with operating the dust collection unit (14) of the mobile sterilization device 1 regardless of whether a user is present or not, the dust collection unit (14) may be operated simultaneously with the sterilization unit (11). In this case, it is possible to collect fine particles in the air at the same time as decomposing and deactivating viruses and bacteria attached to objects.

In addition, when the installation position of the fixed sterilization device 2 is very high compared to the height of a person, for example, the sterilization range is sufficiently far from the area where people are active, and the ultraviolet rays 201 emitted from the fixed sterilization device 2 are not harmful to people, the fixed sterilization device 2 may be operated simultaneously with the dust collection unit of the mobile sterilization device 1 while a user is present. In this case, it is possible to deactivate or decontaminate viruses and sterilize them attached to objects in a part of the indoor space at the same time as collecting fine particles in the air.

Note that the indoor sterilization system 3 of embodiment 2 is composed of one mobile sterilization means (1) and one fixed sterilization means (2), but as long as it is composed of mobile sterilization means (1) and fixed sterilization means (2), any number of each may be used. Therefore, the number of mobile sterilization means (1) and fixed sterilization means (2) needs to be appropriately set depending on the size of the target room and the time required for sterilization.

As described above, the mobile sterilization device 1 includes a sensor (112) that detects human behavior, a dust collection means (14) that collects fine particles suspended in the air, a sterilization means (11) that decomposes or inactivates viruses/bacteria, etc., a moving means (16) capable of autonomous travel, and a control means (110). The fixed sterilization device 2 includes a sterilization means (21) and a control means (210).

The indoor sterilization system 3, which switches between dust collection means/sterilization means depending on the detection content of the sensor (112) of the mobile sterilization device 1, can remove or inactivate fine particles, viruses, and bacteria in the room regardless of whether people are present or not, thereby suppressing or preventing users living in the room from contracting infectious diseases.
Although the example has been given of a single fixed sterilization device 2, a plurality of fixed sterilization devices 2 may be provided.
The fixed sterilization apparatus 2 is located at a high position from which the entire room can be viewed. The fixed sterilization apparatus 2 is equipped with a camera that views the room, and the control unit 210 recognizes the shape and layout of the room, and notifies the mobile sterilization apparatus 1 of the result by communication. The shape of the room, etc. may be reflected in the control of the mobile sterilization apparatus 2. This point is also the same in the following embodiment 3.

<<Embodiment 3>>
The structure of the third embodiment of the present invention will be described with reference to FIG.
FIG. 11 is a schematic diagram showing an indoor sterilization system 3A according to the third embodiment of the present invention during operation.
An indoor sterilization system 3A according to the third embodiment of the present invention is configured to include two mobile sterilization devices 1 (1A, 1B) according to the first embodiment and one fixed sterilization device 2 according to the second embodiment.
The configuration of the mobile sterilization apparatuses 1A and 1B is similar to that of the mobile sterilization apparatus 1 in embodiment 1, and the configuration of the fixed sterilization apparatus 2 is similar to that of the fixed sterilization apparatus 2 in embodiment 2. Therefore, the configuration of an indoor sterilization system 3A made up of two mobile sterilization apparatuses 1A and 1B and one fixed sterilization apparatus 2 will be described below, focusing on the parts (configurations) that differ from embodiments 1 and 2.

An indoor sterilization system 3A of embodiment 3 is configured to include two mobile sterilization apparatuses, a mobile sterilization apparatus (A) 1A and a mobile sterilization apparatus (B) 1B, and a fixed sterilization apparatus 2.
The mobile sterilization apparatus (A) 1A and the mobile sterilization apparatus (B) 1B each include a detection unit (112A), (112B), a travel drive unit (16A), (16B), a dust collection unit (14A), (14B), a sterilization unit (11A), (11B), a control unit (110A), (110B), and a communication unit (111A), (111B). The two mobile sterilization apparatuses (A) 1A and (B) 1B are capable of detecting the presence or absence of a person in a room using the human detection sensor 112A and the human detection sensor 112B, which are detection units.

The fixed sterilization device 2 includes an ultraviolet irradiating unit 21 of the sterilization section, a control unit 210 , and a communication unit 211 .
The mobile sterilization apparatus (A) 1A and the mobile sterilization apparatus (B) 1B can communicate with the fixed sterilization apparatus 2 via the communication units. That is, the indoor sterilization system 3A can operate according to information detected by the detection units (112A) and (112B) of the mobile sterilization apparatus (A) 1A and the mobile sterilization apparatus (B) 1B.

The operation of the room sterilization system 3A will now be described.
When the indoor sterilization system 3A starts control, first, the mobile sterilization device (A) 1A and the mobile sterilization device (B) 1B move around the room and detect the presence of a person in the room by the radio waves 112Aa and 112Ba emitted by the person detection sensors 112A and 112B, respectively. Here, either of the mobile sterilization devices (1A, 1B) may detect the presence or absence of a person in the room. In Fig. 11, the detection direction of the mobile sterilization device (A) 1A is close to the person P, so the person P is detected by the person detection sensor 112A of the mobile sterilization device (A) 1A.

As in the second embodiment, when either of the mobile sterilization devices (1A, 1B) detects that a user is present in the room, that is, when a user is present in the room, the indoor sterilization system 3A operates the dust collection units (14A) and (14B) of the mobile sterilization device (A) 1A and the mobile sterilization device (B) 1B.

As a result, each mobile sterilization device (1A, 1B) takes in intake air 102A, 102B from the outside into main body 1Ah, 1Bh while moving. Then, the mobile sterilization device (1A, 1B) collects fine particles such as viruses and bacteria contained in intake air 102A, 102B suspended in the air in filters 15A, 15B inside main body 1Ah, 1Bh, turns them into clean air 103A, 103B, and releases them to the outside. Then, when dust sensors 113A, 1113B detect that the amount of fine particles contained in both intake air 102A, 102B has decreased sufficiently, the mobile sterilization device (1A, 1B) determines that collection of fine particles contained in the air has been completed, and ends control.

As in the second embodiment, when both mobile sterilization devices (1A, 1B) detect that the user is absent, that is, when the user is absent, the indoor sterilization system 3A operates the sterilization units (11A) and (11B) of the mobile sterilization device (A) 1A and the mobile sterilization device (B) 1B, and the ultraviolet irradiation unit 21 of the sterilization unit of the fixed sterilization device 2.
After time has passed, the indoor sterilization system 3A determines that the entire room has been sterilized and terminates control when either or both of the following are achieved: the two mobile sterilization devices (A) 1A and (B) 1B have traveled throughout the room together and confirmed that the entire room has been sterilized; or a certain period of time during which sterilization by the fixed sterilization device 2 is considered to be effective has elapsed.

Note that irradiation of ultraviolet light, which has a sterilizing effect on humans, may cause health damage to humans. Therefore, the indoor sterilization system 3A detects the presence or absence of a user in the room and switches between the sterilization units (11A), (11B), and (21) to operate, thereby enabling sterilization of viruses and bacteria without harming humans. Also, as in the first and second embodiments, the dust collection units (14A) and (14B) may be operated regardless of the presence or absence of a user. Therefore, the mobile sterilization device (1A, 1B) may operate the dust collection units (14A and 14B) simultaneously with the sterilization units (11A and 11B). In that case, the indoor sterilization system 3A can also collect fine particles in the air while decomposing, deactivating, or inactivating viruses and bacteria attached to objects.

As in the second embodiment, the fixed sterilization device 2 may be operated simultaneously with the dust collection unit of the mobile sterilization device 1 when a user is present, depending on the installation position of the fixed sterilization device 2. In this case, it is possible to de-sterilize or inactivate viruses attached to objects in a part of the room and sterilize them at the same time as collecting fine particles in the air. The person detection sensors 112A and 112B of the mobile sterilization device (A) 1A and the mobile sterilization device (B) 1B respectively determine where in the room the user is. Meanwhile, the ultraviolet ray irradiation unit 21 of the fixed sterilization device 2 determines where in the room to irradiate ultraviolet rays 201 by acquiring the shape of the room and the position of the fixed sterilization device 2.

As described above, in this embodiment 3, the two mobile sterilization devices (1A, 1B) detect the presence of a person P, collect fine particles in the air, and decompose or inactivate viruses and bacteria in the room by irradiating them with ultraviolet light. Also, the fixed sterilization device 2 irradiates high places that the mobile sterilization devices (1A, 1B) cannot reach with ultraviolet light from the ultraviolet irradiating unit 21, thereby decomposing or inactivating viruses and bacteria.
Therefore, the indoor sterilization system 3A takes less time to detect a person P, purify the air, and decontaminate or inactivate the target compared to a single unit. Also, when performing cleaning in the same amount of time, the indoor sterilization system 3A can clean a large room and decontaminate or inactivate the target.

The indoor sterilization system 3A of embodiment 3 is configured with two mobile sterilization means (1A, 1B) and one fixed sterilization means (2), but the number of each can be any number as long as it is configured with a mobile sterilization means and a fixed sterilization means.
By providing one or more mobile sterilization means and one or more fixed sterilization means, the room can be thoroughly desterilized or inactivated regardless of the size of the room.
The number of mobile sterilization means and fixed sterilization means must be appropriately set or selected depending on the size of the target room and the time required for sterilization. In addition, when sterilization of high places is not required or installation is difficult, the indoor sterilization system 3A may be configured using only multiple mobile sterilization means without using the fixed sterilization means (2).

As described above, the indoor sterilization system 3A, which is equipped with at least one mobile sterilization device (1A, 1B) and switches between dust collection means and sterilization means depending on what is detected by the sensor, can remove or inactivate fine particles, viruses, and bacteria in the room regardless of whether a person P is present, thereby preventing users living in the room from contracting infectious diseases.

<<Embodiment 4>>
FIG. 12 is a schematic diagram of a mobile sterilization apparatus 1C according to a fourth embodiment of the present invention.
A mobile sterilization apparatus 1C according to a fourth embodiment of the present invention will be described with reference to FIG.
The configuration of the mobile sterilization apparatus 1C is similar to the configuration of the mobile sterilization apparatus 1 (1A, 1B) of Embodiments 1 to 3. Therefore, the configuration of the mobile sterilization apparatus 1C of Embodiment 4 will be described below, focusing on the parts that differ from Embodiments 1 to 3.

The mobile sterilization device 1C of embodiment 4 has the same structure as embodiment 1 in that it is equipped with a centrifugal impeller 14 and a filter 15 which are dust collecting parts, a control unit 110, a communication unit 111, and drive wheels 16 which are driving parts for traveling, within the main body 1Ch.
In the mobile sterilization device 1C, an ultraviolet ray irradiation unit 11n is provided inside the main body 1Ch. The mobile sterilization device 1C is characterized in that ultraviolet rays 101 irradiated from the ultraviolet ray irradiation unit 11n are irradiated onto the fine particles collected in the filter 15.

Therefore, since the ultraviolet light 101 decomposes and deactivates particles such as viruses and bacteria within the main body 1Ch without being irradiated to the outside of the main body 1Ch, it is possible to operate the ultraviolet light irradiation section 11n of the sterilization means at all times regardless of whether there is a person P nearby.
The mobile sterilization device 1C cannot sterilize fine particles that adhere to a wall surface and cannot be removed, but fine particles that once adhere to a wall surface or floor surface Y but are stirred up into the air by contact or the like are sucked in from the intake port 12 as intake air 102. Inside the mobile sterilization device 1C, fine particles are collected from the sucked in intake air 102 by a filter 15. Clean air 103 that does not contain fine particles is then discharged from the exhaust port 13 of the mobile sterilization device 1C to the outside.

Collected particles such as viruses and bacteria are decomposed or inactivated by being irradiated with ultraviolet light 101 from the ultraviolet irradiation unit 11n inside the mobile sterilization device 1C. This prevents the particles from flying up when the filter 15 in the mobile sterilization device 1C is replaced, thereby preventing the spread of infectious diseases.

<<Embodiment 5>>
FIG. 13 is a schematic diagram of a mobile sterilization apparatus 1D according to a fifth embodiment of the present invention.
The mobile sterilization device 1D of the fifth embodiment is configured to sterilize both the outside and the inside.
In the mobile sterilization device 1D, an ultraviolet irradiating unit 11A that irradiates the outside of the main body 1Dh with ultraviolet light 101A is disposed outside the main body 1Dh. Also, in the mobile sterilization device 1D, an ultraviolet irradiating unit 11B that irradiates the inside of the main body 1Dh with ultraviolet light 101B is disposed inside the main body 1Dh.

The mobile sterilization device 1D breaks down, decontaminates, or inactivates bacteria and viruses adhering to the exterior walls and floor Y of the main body 1Dh by irradiating them with ultraviolet light from the ultraviolet irradiating unit 11A. At the same time, the mobile sterilization device 1D can break down, decontaminate, or inactivate bacteria and viruses that have been collected from the outside and attached to the filter 15 by irradiating them with ultraviolet light from the ultraviolet irradiating unit 11B inside the main body 1Dh.
Therefore, the mobile sterilization device 1D irradiates only the internal ultraviolet irradiating unit 11B when it detects the presence of a person by the human detection sensor 112. On the other hand, when no person is present, the mobile sterilization device 1D drives both the external ultraviolet irradiating unit 11A and the internal ultraviolet irradiating unit 11B, thereby making it possible to decompose or inactivate bacteria and viruses present inside and outside the main body 1Dh without causing any health hazard to people.

<<Other embodiments>>
1. In the above embodiment, the mobile sterilization device 1 has the human detection sensor 112. However, the human detection sensor 112 may be provided in a room, and the mobile sterilization device 1 and the fixed sterilization device 2 may perform sterilization according to the detection content of the human detection sensor 112 provided in the room.
FIG. 14 is a schematic diagram showing the operation of an indoor sterilization system 3T according to another embodiment of the present invention when a user is present in the room.

In the above embodiment, a configuration was exemplified in which human detection sensors 112, 112A, 112B are provided in the mobile sterilization device 1, (1A, 1B), but instead, as shown in Figure 14, a human detection sensor 212 having a communication means is provided in the room as an indoor sterilization system 3T.
The human detection sensor 212 can communicate with the mobile sterilization apparatus 1 (1A, 1B) and the fixed sterilization apparatus 2 that constitute the indoor sterilization system 3T via the communication means.

Then, based on the detection information of the human detection sensor 212, the ultraviolet irradiating section 11 of the mobile sterilization device 1 irradiates ultraviolet light 101, and the ultraviolet irradiating section 21 of the fixed sterilization device 2 irradiates ultraviolet light 201 to the outside.
In other words, a configuration may be adopted in which, upon detection by the human detection sensor 212, ultraviolet rays 101 are irradiated from the ultraviolet irradiation unit 11 of the mobile sterilization device 1 to a place where no one is present, and ultraviolet rays 201 are irradiated from the ultraviolet irradiation unit 21 of the fixed sterilization device 2 to a place where no one is present. With this configuration, ultraviolet rays 101 and 201 can be irradiated to a place where no one is present.

2. The configuration described in the above embodiment is one example of the present invention, and various other forms are possible within the scope of the claims.

1, 1C, 1D Mobile sterilization device 1A Mobile sterilization device (A) (Mobile sterilization device)
1B Mobile sterilization device (B) (Mobile sterilization device)
2 Fixed sterilization device 3, 3A, 3T Indoor sterilization system 11, 11n Ultraviolet irradiation unit (sterilization means)
14 Centrifugal impeller (dust collecting means)
16 Drive wheels (means of transportation)
21 Ultraviolet irradiation section (fixed sterilization means)
110 Control unit (control means)
111 Communication unit (communication means)
112, 112A, 112B Human detection sensor (sensor)
212 Human detection sensor (indoor sensor)
210 Control unit (fixed control means)
211 Communication unit (fixed communication means)

Claims (7)

A sensor for detecting a person;
A dust collecting means for collecting fine particles suspended in the air;
A sterilization means for decomposing or inactivating at least one of viruses and bacteria by irradiating with ultraviolet light ;
A means of transportation capable of autonomous driving;
a control means for inputting the detection result of the sensor and controlling the dust collecting means, the sterilizing means, and the moving means;
The control means
A map creating means is provided,
The dust collecting means and the sterilizing means are switched and operated according to the detection result of the sensor,
the sensor is a camera that detects visible light;
The control means estimates the shape and size of the room, as well as its own position within the room, by detecting lines between walls, lines between walls and the floor, and lines between walls and the ceiling from an image of the entire room taken by the camera. A sensor for detecting a person;
A distance sensor that detects the shape of a room and the user's own position within the room;
A dust collecting means for collecting fine particles suspended in the air;
A sterilization means for decomposing or inactivating at least one of viruses and bacteria by irradiating with ultraviolet light ;
A means of transportation capable of autonomous driving;
a control means for inputting detection results of the sensor and the distance sensor and controlling the dust collecting means, the sterilizing means, and the moving means;
The control means
A map creating means is provided,
A mobile sterilization device characterized in that the dust collection means and the sterilization means are switched between and operated according to the detection contents of the sensor, and the shape and layout of a room are obtained through communication from an air conditioner having a function of detecting the shape and layout of the room. At least one mobile sterilization device according to claim 1 or claim 2;
a fixed sterilization device including at least one fixed sterilization means for decomposing or inactivating at least one of viruses and bacteria by irradiating ultraviolet light and a fixed control means for controlling the fixed sterilization means;
The control means
An indoor sterilization system, characterized in that the dust collection means and the sterilization means are switched and operated depending on the detection content of the sensor. The mobile sterilization apparatus has a communication means,
The fixed sterilization apparatus has a fixed communication means for communicating with the communication means,
The fixation control means is
The indoor sterilization system according to claim 3 , wherein the fixed sterilization means is operated or not operated depending on the contents of detection by the sensor. an indoor sensor that is provided in a room, has a communication unit, and detects a person;
A dust collecting means for collecting fine particles suspended in the air;
A sterilization means for decomposing or inactivating at least one of viruses and bacteria by irradiating with ultraviolet light ;
A means of transportation capable of autonomous driving;
A means of communication;
A mobile sterilization device including a control means for inputting the detection results of the indoor sensor and controlling the dust collecting means, the sterilization means, the moving means, and the communication means;
A fixed sterilization device is provided with at least one fixed sterilization means for decomposing or inactivating at least one of viruses and bacteria by irradiating ultraviolet light , a fixed communication means, and a fixed control means for controlling the fixed sterilization means and the fixed communication means,
The control means
A map creating means is provided,
The dust collecting means and the sterilizing means are switched and operated according to the detection contents of the indoor sensor,
The fixation control means is
The fixed sterilization means is operated or deactivated depending on the detection content of the indoor sensor,
the indoor sensor is a camera that detects visible light,
The control means estimates the shape and size of the room, as well as its own position within the room, by detecting lines between walls, lines between walls and the floor, and lines between walls and the ceiling from an image of the entire room taken by the camera. an indoor sensor that is provided in a room, has a communication unit, and detects a person;
A distance sensor that detects the shape of a room and the user's own position within the room;
A dust collecting means for collecting fine particles suspended in the air;
A sterilization means for decomposing or inactivating at least one of viruses and bacteria by irradiating with ultraviolet light ;
A means of transportation capable of autonomous driving;
A means of communication;
A mobile sterilization device including a control means for inputting the detection contents of the indoor sensor and the distance sensor and controlling the dust collecting means, the sterilization means, the moving means, and the communication means;
A fixed sterilization device is provided with at least one fixed sterilization means for decomposing or inactivating at least one of viruses and bacteria by irradiating ultraviolet light , a fixed communication means, and a fixed control means for controlling the fixed sterilization means and the fixed communication means,
The control means
A map creating means is provided,
The fixed control means switches between the dust collection means and the sterilization means in response to the detection results of the indoor sensor, and acquires the shape and layout of the room through communication from an air conditioner having a function of detecting the shape and layout of the room.
The fixed sterilization means is operated or not operated depending on the detection result of the indoor sensor. The fixed type sterilization device is
The indoor sterilization system according to claim 5 or 6, characterized in that the fixed sterilization device is installed at a high place that cannot be reached by the mobile sterilization device, and the sterilization target range of the fixed sterilization device and the sterilization target range of the mobile sterilization device do not overlap.

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