JP7133777B2 - Space purification system and space purification method - Google Patents

Description

The present invention relates to a space purification system and a space purification method for suppressing the spread of infection by infectious substances.

Techniques have been proposed to control the spread of infectious agents. Patent Literature 1 discloses a method for preventing nosocomial infections in medical facilities. Further, Patent Literature 2 discloses an air-conditioning control technique for accurately calculating the number of people entering a room from the outdoors and maintaining the comfort and health of the people in the room.

Japanese Patent Application Laid-Open No. 2003-6342 JP 2014-5993 A

By the way, in a system for purifying a space using a device such as an air conditioner, it is required to efficiently purify the space in consideration of the performance of the device.

The present invention provides a space purification system and a space purification method that can efficiently purify a space.

A space purification system according to an aspect of the present invention includes a specifying unit that specifies a target area that needs to be cleaned in the space based on information about a person staying in the space, and the target area specified by the specifying unit. and a purification control unit that locally purifies the .

In the space purification method according to one aspect of the present invention, the purification control unit locally purifies the identified target area using hypochlorous acid.

ADVANTAGE OF THE INVENTION According to this invention, the space purification system and the space purification method which can purify space efficiently are implement|achieved.

FIG. 1 is a block diagram showing the functional configuration of the space purification system according to the embodiment. FIG. 2 is a flow chart of basic operation of the space purification system according to the embodiment. FIG. 3 is a diagram for explaining a first example of a method of specifying a target area. FIG. 4 is a diagram for explaining a second example of a target area specifying method. FIG. 5 is a diagram for explaining a third example of a target area specifying method. FIG. 6 is a flowchart of operation example 1 of the space purification system according to the embodiment. FIG. 7 is a diagram showing an example of the criteria for calculating the purification required level. FIG. 8 is a first diagram for explaining an example of calculation of the required purification level. FIG. 9 is a second diagram for explaining an example of calculation of the required purification level. FIG. 10 is a diagram showing the required level of purification when a suspected infected person moves in a space in Operation Example 2. FIG. FIG. 11 is a diagram showing an example of location information of suspected infected persons. FIG. 12 is a diagram showing an example of criteria for calculating the required level of purification based on the elapsed time since the suspected infected person was absent. FIG. 13 is a diagram showing an example of location information of suspected infected person A. In FIG. FIG. 14 is a diagram showing an example of location information of suspected infected person B. FIG. FIG. 15 is a diagram showing the required level of purification when a plurality of suspected infected persons are detected in the space in Operation Example 2. FIG.

Hereinafter, embodiments will be specifically described with reference to the drawings. It should be noted that the embodiments described below are all comprehensive or specific examples. Numerical values, shapes, materials, components, arrangement positions and connection forms of components, steps, order of steps, and the like shown in the following embodiments are examples and are not intended to limit the present invention. Further, among the constituent elements in the following embodiments, constituent elements not described in independent claims will be described as optional constituent elements.

Each figure is a schematic diagram and is not necessarily strictly illustrated. Moreover, in each figure, the same code|symbol is attached|subjected with respect to substantially the same structure, and the overlapping description may be abbreviate|omitted or simplified.

(Embodiment)
[Configuration of space purification system]
First, the configuration of the space purification system according to the embodiment will be described. FIG. 1 is a block diagram showing the functional configuration of the space purification system according to the embodiment.

A space purification system 10 according to an embodiment is a system capable of locally purifying a space. Spatial cleansing means a process for suppressing the infection of persons staying in the space with infectious agents. The space is, for example, a closed space such as a nursing facility, a hospital, or a hospital waiting room, and is a room without a partition. Infectious agents are, for example, fungi, bacteria, or viruses. Purification here means purification in a broad sense, and includes not only disinfecting or sterilizing infectious substances with hypochlorous acid, but also preventing the retention or propagation of infectious substances by blowing air. be As shown in FIG. 1, the space purification system 10 includes a detection device 20, a signal processing device 30, and a purification device 40. As shown in FIG.

The detection device 20 is a device for detecting a person staying in the space. The detection device 20 includes a camera 21 that captures an image (specifically, a moving image or a still image) in the space, a thermal image sensor 22 that captures a thermal image in the space, and a sound in the space. A microphone 23 and the like are included. The detection device 20 may include multiple cameras 21 , thermal image sensors 22 , and microphones 23 . Note that the space purification system 10 may include at least one detection device 20 .

Based on the image data, thermal image data, and audio data obtained from the detection device 20, the signal processing device 30 identifies a target area that needs to be cleaned in space, and outputs a control signal to the cleaning device 40. A device for locally cleansing an area of interest identified by . The signal processing device 30 is implemented by, for example, a microcomputer or processor. A specific configuration of the signal processing device 30 will be described later.

The purification device 40 is a device for purifying a space that operates based on a control signal output from the signal processing device 30 . The purification device 40 includes, for example, a blower device 41, a sterilization device 42, an air conditioner 43, and the like. The sterilization device 42 is, for example, a device that sprays hypochlorous acid water, but it may be a device that sterilizes the taken air with hypochlorous acid and discharges it, or another sterilization device. Purification equipment 40 may also include ventilation equipment. The cleaning device 40 may include a plurality of blowers 41 , sterilizers 42 , and air conditioners 43 . Note that the space purification system 10 may include at least one purification device 40 .

[Configuration of Signal Processing Device]
Next, a specific configuration of the signal processing device 30 will be described. The signal processing device 30 includes an acquisition unit 31 , a detection unit 32 , a storage unit 33 , an identification unit 34 , a calculation unit 35 and a purification control unit 36 .

The acquisition unit 31 is a communication circuit (in other words, a communication interface) that acquires data from the detection device 20 . Specifically, the acquisition unit 31 acquires image data from the camera 21 , thermal image data from the thermal image sensor 22 , and audio data from the microphone 23 . Communication between the acquisition unit 31 and the detection device 20 may be wireless communication or wired communication. The communication standard is also not particularly limited.

The detection unit 32 detects a person staying in the space based on data obtained from the detection device 20 via the acquisition unit 31 . The detection unit 32 detects a person staying in the space, for example, by image recognition processing (existing pattern matching processing, etc.) using image data obtained from the camera 21 . Further, the detection unit 32 may detect a person staying in the space using thermal image data obtained from the thermal image sensor, or may detect a person staying in the space using audio data obtained from the microphone 23. A person may be detected.

In addition, the detection unit 32 can distinguish between a suspected infected person who is suspected of being infected with an infectious substance and a non-infected person other than the suspected infected person. good. For example, the detection unit 32 detects a person whose body temperature is equal to or higher than a predetermined temperature (for example, 37.5° C.) from thermal image data obtained from the thermal image sensor 22 as a suspected infected person. Further, the detection unit 32 may detect a person who is determined to have coughed or sneezed more than a predetermined number of times within a predetermined period as a suspected infected person, based on audio data obtained from the microphone 23 .

Moreover, when the space is an internal space such as a care facility or a hospital, the detection unit 32 may consider a visitor to the space to be a suspected infected person. For example, when an introductory card with an IC tag is distributed to a visitor, the detection unit 32 can detect the visitor as a suspected infected person by detecting the IC tag. In this case, the detection unit 32 has the function of an IC tag reader capable of spatially separating and recognizing a plurality of IC tags. The IC tag is specifically a wireless tag such as an RFID tag.

In this way, the detection unit 32 detects the suspected infected person based on at least one of body temperature, determination of whether or not the person is a visitor to the space, and the number of coughs or sneezes within a predetermined period of time. can be done.

The storage unit 33 stores a program executed by the signal processing device 30 to perform signal processing for locally purifying a target region, information necessary for the signal processing (for example, position information to be described later), and the like. It is a storage device. The storage unit 33 is implemented by a semiconductor memory or the like. The storage unit 33 also stores, for example, space information indicating the shape and size of the space, equipment layout information indicating the layout of the purification equipment 40 in the space, and the like. Spatial information and equipment arrangement information are input via, for example, a user interface device (not shown) provided in the space purification system 10 .

The identifying unit 34 identifies a target area that needs to be purified in the space based on information about the person staying in the space (for example, the detection result of the person by the detecting unit 32). A specific method of specifying the target area will be described later.

The calculation unit 35 calculates a purification requirement level indicating the necessity of purification in the specified target area. The cleaning required level is used to determine which target area should be preferentially locally cleaned when there are a plurality of target areas in the space. A specific method of calculating the purification required level will be described later.

The purification control unit 36 locally purifies the target area specified by the specifying unit 34 . Specifically, the purification control unit 36 locally purifies the target area by outputting a control signal to the purification device 40 . The control signal may be output to the purification device 40 by wireless communication, or may be output to the purification device 40 by wired communication. Further, when there are a plurality of target areas in the space, the purification control section 36 locally purifies the target areas determined based on the level of purification requirement calculated by the calculation section 35 .

[basic action]
Next, the basic operation of the space purification system 10 will be described. FIG. 2 is a flow chart of the basic operation of the space purification system 10. As shown in FIG.

First, the detection unit 32 detects a person staying in the space based on data obtained from the detection device 20 via the acquisition unit 31 (S11). A specific method of detecting a person by the detection unit 32 is as described above.

Next, the identifying unit 34 identifies a target area that requires purification in the space based on the detection result of the person by the detecting unit 32 (S12). Since infectious substances are often excreted from the human body, it is considered that there is a high need for purification in areas where people are present. Therefore, the specifying unit 34 specifies an area including the position where the person is detected in the space as a target area requiring purification. FIG. 3 is a diagram for explaining a first example of a method of specifying a target area. FIG. 3 is a top plan view of the space 50 and also shows the position of the cleaning equipment 40 .

In FIG. 3 , white circles indicate positions 51 where people are detected within space 50 . The specifying unit 34 sets, for example, an area 52 centering on a position 51 where a person is detected as a target area. In FIG. 3, the target area is a circular area in plan view, but the shape of the target area in plan view is not particularly limited. It is not essential that the position where the person is detected be the center of the target area, and the target area may include the position where the person is detected.

In addition, since infectious substances are often transmitted from person to person, it is considered that there is a high need for purification in places where multiple people are present in order to suppress the spread of infection. Therefore, when multiple people are detected in a certain range of the space 50, the specifying unit 34 may specify the certain range as the target area. FIG. 4 is a diagram for explaining a second example of a target area specifying method.

As shown in FIG. 4, when multiple people are detected within a certain range 53 (for example, a range with a diameter of 2 m), the identifying unit 34 identifies the certain range 53 as the target area. The target area may include at least the certain range 53 and may be larger than the certain range 53 . In the example of FIG. 4, when only one person is detected within the fixed range 53, the fixed range 53 is not set as the target area.

In addition, it is thought that there is a high need for purification in places where there are non-infected people near suspected infected people in order to control the spread of infection. Therefore, when a suspected infected person and a non-infected person are detected in a certain range 53 of the space 50, the specifying unit 34 may specify the certain range 53 as the target area. FIG. 5 is a diagram for explaining a third example of a target area specifying method.

In FIG. 5, white circles are the positions of non-infected persons, and hatched circles are the positions of suspected infected persons. As shown in FIG. 5, when the detection unit 32 detects a suspected infected person and a non-infected person within a certain range 53 (for example, a range with a diameter of 2 m), the identification unit 34 detects the certain range 53. Identify as a region. The target area may include at least the certain range 53 and may be larger than the certain range 53 . In the example of FIG. 5, even if a plurality of people are detected within the certain range 53, the certain range 53 is not treated as the target area unless there is a suspected infected person.

When the target area is identified by any of the methods of FIGS. 3 to 5, the purification control unit 36 locally purifies the identified target area (S13). For example, by outputting a control signal to the sterilization device 42, the purification control unit 36 directs the sterilization device 42 toward the target area, as indicated by the arrows in FIGS. Spray mist. The purification control unit 36 may generate an airflow toward the target area by outputting a control signal to at least one of the blower device 41 and the air conditioner 43 . The purification control unit 36 may use at least one of the air blower 41 , the sterilization device 42 , and the air conditioner 43 to purify the target area.

As described above, the space purification system 10 identifies, as the target area, an area that is estimated to have a high need for purification based on the human detection result. The space purification system 10 can efficiently purify the space 50 by locally purifying the target area.

[Operation Example 1 Using Purification Necessary Level]
Next, an operation example 1 using the purification required level of the space purification system 10 will be described. FIG. 6 is a flow chart of Operation Example 1 using the purification required level of the space purification system 10 .

As in the basic operation, the detection unit 32 detects a person staying in the space based on the data obtained from the detection device 20 via the acquisition unit 31 (S21), Based on the detection result of (S22), a target area that needs to be cleaned is specified in the space.

Next, the specifying unit 34 determines whether or not there are multiple target areas (S23). When the identification unit 34 determines that there is only one target area (No in S23), the purification control unit 36 locally purifies the target area (S24).

On the other hand, if the identifying unit 34 determines that there are multiple target areas (Yes in S23), the calculating unit 35 calculates the level of purification required for the target area (S25). FIG. 7 is a diagram showing an example of the criteria for calculating the purification required level.

In the example of FIG. 7, the required purification level is determined based on the number of people present within a certain range (for example, within 2 m) and whether suspected infected persons are included in the people present within the certain range. is classified into three stages from level 0 to level 2. In this way, the calculation unit 35 calculates the required level of purification of the target area based on the number of people detected in the target area and the number of suspected infected persons detected in the target area. 8 and 9 are diagrams for explaining an example of calculation of the required level of purification. 8 and 9, white circles indicate the positions of non-infected persons, and hatched circles indicate the positions of suspected infected persons.

For example, as shown in FIG. 8, there are two people in total, one non-infected person and one suspected infected person, in the first target area 61, and one suspected infected person in the second target area 62. In this case, the calculation unit 35 sets the level 3 of the purification requirement for the first target area 61 and the level 1 of the level of purification requirement for the second target area 62 based on the calculation criteria of FIG. 7 .

On the other hand, when there are two non-infected persons in the first target area 61 and one suspected infected person in the second target area 62 as shown in FIG. Based on the calculation criteria, the level 2 is set as the purification required level for each of the first target region 61 and the second target region 62 .

Note that the calculation criteria in FIG. 7 are an example. For example, the required level of purification may be classified more finely according to the number of people existing within a certain range (for example, within 2 m), or according to the number of suspected infected persons among the people existing within a certain range. Purification requirement levels may be classified more finely. In addition, it is not essential to use the number of suspected infected persons, and the calculation unit 35 calculates the required purification level based on the number of people (regardless of whether or not they are suspected infected persons) existing within a certain range. You may

After the calculation unit 35 calculates the required level of purification, the purification control unit 36 determines whether or not there are a plurality of target areas with the highest level (S26).

As shown in FIG. 8, when the purification control unit 36 determines that there is one target region with the highest level (No in S26), the target region is locally purified (S27). In the example of FIG. 8 , the purification control unit 36 locally purifies the first target region 61 .

On the other hand, as shown in FIG. 9, when the purification control unit 36 determines that there are a plurality of target areas with the highest level (Yes in S26), the entire space 50 is purified (S28). In the example of FIG. 9 , the purification control unit 36 purifies the entire space 50 by controlling the direction of the purification device 40 to change periodically.

As described above, in the operation example 1, when a plurality of target regions are specified by the specifying unit 34, the purification control unit 36 locally purifies target regions with a relatively high level of cleaning requirement among the plurality of target regions. and if the cleaning requirement levels of the target areas are the same, the space 50 is cleaned as a whole.

Such a spatial purification system 10 can selectively perform localized and global purification based on the level of purification required.

[Operation Example 2 Using Purification Necessary Level]
Next, an operation example 2 using the purification required level of the space purification system 10 will be described. Infectious substances are often excreted by suspected infected persons. Then, in the space 50, the area where the suspected infected person is staying is considered to have a high risk of the non-infected person being infected with an infectious substance (hereinafter simply referred to as the infection risk). On the other hand, in the area where the suspected infected person who stayed in the space 50 is absent, the longer the elapsed time after the suspected infected person is absent, the lower the infection risk.

Therefore, in Operation Example 2, the space 50 is divided into a plurality of small regions in a plan view, and the calculation unit 35 calculates the required purification levels of the plurality of small regions as the elapsed time since the suspected infected person disappeared in the small region. (hereinafter simply referred to as elapsed time). FIG. 10 is a diagram showing the required level of purification when a suspected infected person moves in a space in Operation Example 2. FIG.

In FIG. 10, the space 50 is divided into a matrix in plan view, and the positions of small regions in the space 50 are represented by coordinates (x, y) (1≤x≤6, 1≤y≤5). .

As shown in FIG. 10, when the suspected infected person moves in the space 50 as indicated by the arrow, the change in the position of the suspected infected person according to the time (specifically, 13:00 to 13:18) is , as shown in FIG. FIG. 11 is a diagram showing an example of location information of suspected infected persons. As shown in FIG. 11, in the suspected infected person location information, the detected suspected infected person's location is associated with the detection time. Such position information is stored in the storage unit 33 .

On the other hand, FIG. 12 is a diagram showing an example of criteria for calculating the required level of purification based on the elapsed time since the suspected infected person was absent. According to the calculation criteria shown in FIG. 12, the shorter the elapsed time, the lower the required level of purification. In other words, the lower the risk of infection, the lower the level of cleaning required.

Specifically, if the elapsed time is less than 5 minutes, or if the suspected infected person is still staying (i.e., the elapsed time is 0), the purification requirement level is level 3, which is the highest. . When the elapsed time is 5 minutes or more and less than 10 minutes, the level of cleaning requirement is level 2, and when the elapsed time is 10 minutes or more and less than 30 minutes, the level of cleaning requirement is level 1. If the elapsed time is 30 minutes or more, the level of cleaning requirement becomes level 0, and it is determined that cleaning is unnecessary.

That is, each of the small areas included in the space 50 is regarded as the target area when the elapsed time is less than 30 minutes, and is excluded from the target area when the elapsed time is 30 minutes or longer. As described above, in Operation Example 2, the specifying unit 34 refers to the position information stored in the storage unit 33 to obtain a small region (in other words, a predetermined area) is specified as a target area until a certain period of time (for example, 30 minutes) has passed since the suspected infected person disappeared.

As shown in FIGS. 10 and 11, assuming that the current time is 13:18, the small area (3, 2) has an elapsed time of 2 minutes, so the cleaning required level is set to level 3, and the small area For (5, 2), since the elapsed time is 8 minutes, the purification required level is set to level 2. The small area (5, 1) has an elapsed time of 14 minutes, so the cleaning required level is set to level 1. Thus, in Operation Example 2, the calculation unit 35 calculates the level of purification required for the target area based on the elapsed time since the suspected infected person was absent from the target area. The operation example 2 is the same as the operation example 1 except for the method of specifying the target area and the method of calculating the level of purification requirement, so detailed description thereof will be omitted.

If multiple suspected infected persons (for example, suspected infected person A and suspected infected person B) are detected in the space 50, position information is created for each of the plurality of suspected infected persons. FIG. 13 is a diagram showing an example of location information of suspected infected person A, and FIG. 14 is a diagram showing an example of location information of suspected infected person B. As shown in FIG. In this case, as shown in FIG. 15, the cleaning required level for each of the small areas (3, 2) and (1, 5) is level 3. FIG. 15 is a diagram showing the required level of purification when a plurality of suspected infected persons are detected in the space 50 in Operation Example 2. In FIG.

[Effects, etc.]
As described above, the space purification system 10 includes the specifying unit 34 that specifies a target area that needs to be cleaned in the space 50 based on the information about the person staying in the space 50, and the target area specified by the specifying unit 34. A purification control unit 36 is provided for locally purifying the area.

Such a space purification system 10 can specify an area that is estimated to have a high need for purification based on information related to a person who may discharge infectious substances as a target area. Then, the space purification system 10 can efficiently purify the space 50 by locally purifying the target area.

Further, for example, the space purification system 10 further includes a detection section 32 that detects a person staying in the space 50 . The specifying unit 34 specifies a region including the position where the person is detected in the space 50 as a target region.

Such a space purification system 10 identifies, as a target area, an area including a location where a person who may discharge infectious material has been detected. Therefore, the space 50 can be efficiently cleaned by locally cleaning the target area.

Also, for example, when a plurality of people are detected in a certain range of the space 50, the specifying unit 34 specifies the certain range as the target area.

The spatial purification system 10 as described above identifies, as a target area, an area including locations where a plurality of persons who are likely to emit infectious substances have been detected. Therefore, the space 50 can be efficiently cleaned by locally cleaning the target area.

Also, for example, the detection unit 32 determines whether a person staying in the space 50 is a suspected infected person who is suspected of being infected with an infectious substance, or a non-infected person other than the suspected infected person. Differentiate and detect. When a suspected infected person and a non-infected person are detected in a certain range of the space 50, the specifying unit 34 specifies the certain range as the target area.

Such a space purification system 10 specifies, as a target area, an area where suspected infected persons and non-infected persons are present within a certain range and where there is concern about the spread of infection by infectious substances. Therefore, the space 50 can be efficiently cleaned by locally cleaning the target area.

Further, in Operation Example 2, the space purification system 10 further includes a storage unit 33 that stores the position of the detected suspected infected person in association with the detection time. By referring to the storage unit 33, the identifying unit 34 designates an area in the space 50 that includes the position where the suspected infected person was detected as a target area until a certain period of time has passed since the suspected infected person disappeared. Identify as

Such a space purification system 10 identifies, as a target area, an area where a suspected infected person who is highly likely to discharge infectious substances has stayed until recently. Therefore, the space 50 can be efficiently cleaned by locally cleaning the target area.

Further, in Operation Example 1, the space purification system 10 further includes a calculation unit 35 that calculates a purification required level indicating the necessity of purification in the specified target area. When the identifying unit 34 identifies a plurality of target areas, the purification control unit 36 locally purifies the plurality of target areas based on the purification necessary level.

Such a space purification system 10 can efficiently purify the space 50 based on the required level of purification.

Further, in Operation Example 1, the calculation unit 35 calculates the necessary level of purification of the target area based on the number of people detected in the target area.

Such a space purification system 10 can calculate the necessary purification level based on the number of people detected within the target area.

Further, in Operation Example 1, the calculation unit 35 calculates the level of purification required for the target area based on the number of people detected in the target area and the number of suspected infected persons detected in the target area. do.

Such a space purification system 10 can calculate the necessary purification level based on the number of people detected in the target area and the number of suspected infected persons detected in the target area.

In addition, in Operation Example 2, the calculation unit 35 calculates the level of purification required for the target area based on the elapsed time since the suspected infected person was absent from the target area.

Such a spatial purification system 10 can calculate the necessary purification level based on the elapsed time since the suspected infected person was absent in the target area.

Further, in the operation example 1, when a plurality of target regions are specified by the specifying unit 34, the purification control unit 36 locally purifies a target region having a relatively high level of cleaning requirement among the plurality of target regions, If multiple target areas have the same level of cleaning requirement, the space 50 is cleaned as a whole.

Such a spatial purification system 10 can selectively perform localized and global purification based on the level of purification required.

Also, for example, the detection unit 32 detects a suspected infected person based on at least one of body temperature, determination of whether or not the person is a visitor to the space 50, and the number of coughs or sneezes within a predetermined period of time.

Such a space purification system 10 detects a suspected infected person based on at least one of body temperature, determination of whether or not the person is a visitor to the space 50, and the number of coughs or sneezes within a predetermined period of time. can be done.

Also, for example, the purification control unit 36 locally purifies the specified target area using hypochlorous acid.

Such a spatial purification system 10 can use hypochlorous acid to locally purify an area of interest.

In addition, the space purification method executed by the space purification system 10 or the like identifies a target area that needs to be purified within the space 50 based on information about a person staying in the space 50, and localizes the identified target area. purify to

Such a spatial purification method can identify, as a target area, an area that is estimated to have a high need for purification based on information related to a person who may discharge infectious substances. Then, the space purification method can efficiently purify the space 50 by locally purifying the target area.

(Other embodiments)
Although the embodiments have been described above, the present invention is not limited to the above embodiments.

For example, the space purified by the space purification system is not limited to nursing homes, hospitals, or hospital waiting rooms. The space purified by the space purification system may be an airport. Further, the space to be purified by the space purification system is not limited to a building, and may be a space in a moving object such as a railroad or an airplane.

Further, in the above embodiment, the detection unit distinguishes between a suspected infected person who is suspected of being infected with an infectious substance and a non-infected person other than the suspected infected person, who stays in the space. Although an example of separate detection has been described, such a configuration is not required. If the detection unit does not distinguish between suspected infected persons and non-infected persons, the processing described in the above embodiment may be performed assuming that all persons staying in the space are suspected infected persons. The processing described in the above embodiment may be performed assuming that all of the people staying in the country are non-infected.

In addition, in the above embodiment, the target area is specified by the position of people in the space, the number of people, etc., but the density of people in the space, the gender of the person, the age of the person, etc. can be used to specify the target area. may be specified. The target area may be specified based on information about people staying in the space.

Further, in the above-described embodiments, the processing executed by a specific processing unit may be executed by another processing unit. In addition, the order of multiple processes may be changed, and multiple processes may be executed in parallel.

Also, in the above embodiments, each component may be realized by executing a software program suitable for each component. Each component may be realized by reading and executing a software program recorded in a recording medium such as a hard disk or a semiconductor memory by a program execution unit such as a CPU or processor.

Also, each component may be realized by hardware. For example, a component such as a controller may be a circuit (or integrated circuit). These circuits may form one circuit as a whole, or may be separate circuits. These circuits may be general-purpose circuits or dedicated circuits.

Also, general or specific aspects of the present invention may be implemented in a system, apparatus, method, integrated circuit, computer program or recording medium such as a computer-readable CD-ROM. Also, any combination of systems, devices, methods, integrated circuits, computer programs and recording media may be implemented.

For example, the present invention may be implemented as a space purification method, a program for causing a computer to execute the space purification method, or a computer-readable non-temporary program in which such a program is recorded. may be realized as a general recording medium.

Also, in the above embodiments, the space purification system was realized by a plurality of devices. It may also be implemented as a single device. When the spatial purification system is realized by a plurality of devices, the components provided in the spatial purification system described in the above embodiments may be distributed to the plurality of devices in any way.

The spatial purification system may also be implemented as a client-server system. For example, the signal processing device may be implemented as a server device, and the detection device and purification device may be implemented as client devices.

In addition, forms obtained by applying various modifications to each embodiment that a person skilled in the art can think of, or realized by arbitrarily combining the constituent elements and functions of each embodiment without departing from the spirit of the present invention. Also included in the present invention.

REFERENCE SIGNS LIST 10 space purification system 32 detection unit 33 storage unit 34 identification unit 35 calculation unit 36 purification control unit 50 space 53 fixed range

Claims (13)

an identifying unit that identifies a target area corresponding to a partial area of the room, which is a target area requiring purification in the room, based on information about a person staying in the room;
A space purification system, comprising: a purification control unit that locally purifies the target area specified by the specifying unit. Furthermore, comprising a detection unit that detects a person staying in the room,
The space purification system according to claim 1, wherein the identifying unit identifies, as the target area, an area including a position where a person is detected in the room. 3. The space purification system according to claim 2, wherein, when a plurality of people are detected in a certain range of said room, said specifying unit specifies said certain range as said target area. The detection unit detects a person staying in the room by distinguishing whether the person is a suspected infected person suspected of being infected with an infectious substance or a non-infected person other than the suspected infected person. death,
The space purification system according to claim 3, wherein, when the suspected infected person and the non-infected person are detected in a certain range of the room, the specifying unit specifies the certain range as the target area. A space purification system,
an identifying unit that identifies a target area that needs to be purified in the space based on information about people staying in the space;
a purification control unit that locally purifies the target area identified by the identification unit;
A detection unit that detects a person staying in the space,
The identifying unit identifies, as the target area, an area including a position where the person is detected in the space,
The detection unit detects a person staying in the space by distinguishing whether the person is a suspected infected person suspected of being infected with an infectious substance or a non-infected person other than the suspected infected person. death,
The space purification system further comprises a storage unit that stores the detected position of the suspected infected person in association with the detection time,
By referring to the storage unit, the identifying unit identifies the area including the position where the suspected infected person was detected in the space until a certain period of time has passed since the suspected infected person disappeared. Spatial purification system identified as target area. further comprising a calculation unit that calculates a purification required level indicating the necessity of purification in the identified target area,
The space purification system according to claim 1, wherein, when a plurality of target areas are specified by the specifying unit, the purification control section locally purifies the plurality of target areas based on the level of cleaning requirement. Furthermore, comprising a detection unit that detects a person staying in the room,
7. The space purification system according to claim 6, wherein the calculation unit calculates the necessary level of purification of the target area based on the number of people detected in the target area. The detection unit detects a person staying in the room by distinguishing whether the person is a suspected infected person suspected of being infected with an infectious substance or a non-infected person other than the suspected infected person. death,
8. The calculation unit calculates the required level of purification of the target area based on the number of people detected in the target area and the number of suspected infected persons detected in the target area. The space purification system according to . an identifying unit that identifies a target area that needs to be purified in the space based on information about people staying in the space;
a purification control unit that locally purifies the target area identified by the identification unit;
a calculation unit that calculates a purification required level indicating the necessity of purification in the identified target area;
a detection unit that distinguishes and detects whether a person staying in the space is a suspected infected person suspected of being infected with an infectious substance, or a non-infected person other than the suspected infected person;
A storage unit that stores the position of the detected suspected infected person in association with the detection time,
When the identifying unit identifies a plurality of target areas, the purification control unit locally purifies the plurality of target areas based on the purification required level,
By referring to the storage unit, the identifying unit identifies the area including the position where the suspected infected person was detected in the space until a certain period of time has passed since the suspected infected person disappeared. identified as the target area,
The space purification system, wherein the calculation unit calculates the level of purification required for the target area based on the elapsed time since the suspected infected person was absent from the target area. When the identifying unit identifies a plurality of target areas, the purification control unit
Locally purifying the target area having a relatively high level of purification requirement among the plurality of target areas;
The space cleaning system according to any one of claims 6 to 8, wherein the room is cleaned as a whole when the cleaning required levels of the plurality of target areas are the same. 5. The detection unit detects the suspected infected person based on at least one of body temperature, determination of whether or not the person is a visitor to the room, and the number of coughs or sneezes within a predetermined time period, or 9. Space purification system according to 8. The space purification system according to any one of claims 1 to 11, wherein the purification control unit locally purifies the identified target area using hypochlorous acid. Identifying a target area corresponding to a partial area of the room, which is a target area requiring purification in the room, based on information about a person staying in the room;
A spatial cleansing method for locally cleansing the identified region of interest.

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