JPWO2020039818A1 - Space purification system and space purification method - Google Patents

Abstract

The space purification system (10) sets a specific unit (34) that specifies a target area that needs purification in the space and a target area specified by the specific unit (34) based on information about a person staying in the space. It is provided with a purification control unit (36) for locally purifying.

Description

The present invention relates to a space purification system for suppressing the spread of infection of an infectious substance, and a space purification method.

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

Japanese Unexamined Patent Publication No. 2003-6342 Japanese Unexamined Patent Publication No. 2014-5993

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

The present invention provides a space purification system and a space purification method capable of efficiently purifying a space.

The space purification system according to one aspect of the present invention includes a specific unit that specifies a target area that needs to be purified in the space based on information about a person staying in the space, and the target area that is specified by the specific unit. It is equipped with a purification control unit that locally purifies.

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

According to the present invention, a space purification system and a space purification method capable of efficiently purifying a space are realized.

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

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

It should be noted that each figure is a schematic view and is not necessarily exactly shown. Further, in each figure, substantially the same configuration may be designated by the same reference numerals, and duplicate description may be omitted or simplified.

(Embodiment)
[Structure 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 a functional configuration of a space purification system according to an embodiment.

The space purification system 10 according to the embodiment is a system capable of locally purifying the space. Purification of space means a process for suppressing infection of an infectious substance of a person who stays in the space. The space is, for example, a closed space such as a nursing care facility, a hospital, or a waiting room in a hospital, and is a room without a partition or the like. Infectious substances are, for example, molds, bacteria, viruses and the like. Purification here means purification in a broad sense, and purification includes not only sterilization or sterilization of infectious substances with hypochlorous acid, but also hindering the retention or transmission of infectious substances by blowing air. Is done. 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.

The detection device 20 is a device for detecting a person staying in the space. The detection device 20 acquires a camera 21 that captures an image in space (specifically, a moving image or a still image), a thermal image sensor 22 that captures a thermal image in space, and a sound in space. A microphone 23 and the like are included. The detection device 20 may include a plurality of cameras 21, a thermal image sensor 22, and a microphone 23, respectively. The space purification system 10 may be provided with at least one detection device 20.

The signal processing device 30 identifies a target area requiring purification in space based on image data, thermal image data, and audio data obtained from the detection device 20, and outputs a control signal to the purification device 40. It is a device that locally purifies the target area specified by. The signal processing device 30 is realized by, for example, a microcomputer, a processor, or the like. The 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 device 43, and the like. The sterilization device 42 is, for example, a device for spraying hypochlorous acid water, but may be a device for sterilizing the taken-in air with hypochlorous acid and discharging it, or another sterilization device. The purification device 40 may also include a ventilation device. The purification device 40 may include a plurality of blower devices 41, a sterilization device 42, and an air conditioner device 43, respectively. The space purification system 10 may be provided with 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, a specific 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, acquires thermal image data from the thermal image sensor 22, and acquires audio data from the microphone 23. The 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 the data obtained from the detection device 20 via the acquisition unit 31. The detection unit 32 detects a person staying in the space by, for example, an image recognition process (existing pattern matching process or the like) using image data obtained from the camera 21. Further, the detection unit 32 may detect a person staying in the space by using the thermal image data obtained from the thermal image sensor, or may stay in the space by using the audio data obtained from the microphone 23. A person may be detected.

Further, the detection unit 32 may detect whether the 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. 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.) based on the thermal image data obtained from the thermal image sensor 22 as a suspected infected person. In addition, the detection unit 32 may detect a person who is determined to have coughed or sneezeed more than a predetermined number of times within a predetermined period based on the voice data obtained from the microphone 23 as a suspected infected person.

Further, when the space is an internal space such as a nursing care facility or a hospital, the detection unit 32 may consider the visitor to the space as 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 an IC tag reader function capable of spatially separating and recognizing a plurality of IC tags. Specifically, the IC tag is 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 the 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 time. Can be done.

The storage unit 33 stores a program executed by the signal processing device 30 for performing signal processing for locally purifying the target area, information necessary for the signal processing (for example, position information described later), and the like. It is a storage device. The storage unit 33 is realized by a semiconductor memory or the like. The storage unit 33 also stores, for example, spatial information indicating the shape and size of the space, device arrangement information indicating the arrangement of the purification device 40 in the space, and the like. The spatial information and the device arrangement information are input via, for example, a user interface device (not shown) included in the spatial purification system 10.

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

The calculation unit 35 calculates the purification required level indicating the necessity of purification in the specified target area. The purification required level is used to determine which target area is prioritized and locally purified when there are a plurality of target areas in the space. The specific calculation method of the required purification level will be described later.

The purification control unit 36 locally purifies the target area specified by the specific 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 wire communication. Further, when a plurality of target areas exist in the space, the purification control unit 36 locally purifies the target area determined based on the purification required level calculated by the calculation unit 35.

[basic action]
Next, the basic operation of the space purification system 10 will be described. FIG. 2 is a flowchart of the basic operation of the space purification system 10.

First, 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 (S11). The specific method for detecting a person in the detection unit 32 is as described above.

Next, the identification unit 34 identifies a target area that needs to be purified in the space based on the detection result of the person in the detection unit 32 (S12). Since infectious substances are often excreted from the human body, it is considered that there is a high need for purification where humans are located. Therefore, the specifying unit 34 specifies a region in the space including the position where a person is detected as a target region requiring purification. FIG. 3 is a diagram for explaining a first example of a method of specifying a target area. FIG. 3 is a plan view of the space 50 as viewed from above, and the position of the purification device 40 is also shown.

In FIG. 3, the white circle indicates the position 51 in which the person is detected in the space 50. The specific unit 34 sets, for example, a region 52 centered on the position 51 where a person is detected as a target region. In FIG. 3, the target area is a circular area in a plan view, but the plan view shape of the target area is not particularly limited. It is not essential that the position where the person is detected becomes 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 there are multiple people in order to suppress the spread of infection. Therefore, when a plurality of people are detected in a certain range of the space 50, the specific unit 34 may specify a certain range as a target area. FIG. 4 is a diagram for explaining a second example of the method of specifying the target area.

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

In addition, places where there are non-infected persons near suspected infected persons are considered to have a high need for purification 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 specific unit 34 may specify a certain range 53 as a target area. FIG. 5 is a diagram for explaining a third example of the method of specifying the target area.

In FIG. 5, the white circle is the position of the non-infected person, and the hatched circle is the position of the suspected infected person. As shown in FIG. 5, when a suspected infected person and a non-infected person are detected within a certain range 53 (for example, a range of 2 m in diameter) by the detection unit 32, the specific unit 34 targets the certain range 53. Specify as an area. The target area may include at least a certain range 53, and may be larger than a certain range 53. In the example of FIG. 5, even if a plurality of people are detected within a certain range 53, the certain range 53 is not regarded as a target area unless there is a suspected infected person among them.

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

As described above, the space purification system 10 specifies a region in which the need for purification is presumed to be high based on the detection result of a person as a target region. The space purification system 10 can efficiently purify the space 50 by locally purifying the target area.

[Operation example 1 using the required purification level]
Next, an operation example 1 using the purification required level of the space purification system 10 will be described. FIG. 6 is a flowchart of operation example 1 using the purification required level of the space purification system 10.

Similar to 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), and the specific unit 34 is the person of the detection unit 32. Based on the detection result of, the target area requiring purification is specified in the space (S22).

Next, the specific unit 34 determines whether or not there are a plurality of target areas (S23). When the specific unit 34 determines that the target area is only one place (No in S23), the purification control unit 36 locally purifies the target area (S24).

On the other hand, when the specific unit 34 determines that there are a plurality of target areas (Yes in S23), the calculation unit 35 calculates the purification required level of the target area (S25). FIG. 7 is a diagram showing an example of a calculation standard for the required purification level.

In the example of FIG. 7, the level of purification required is based on the number of people existing in a certain range (for example, within a range of 2 m) and whether or not a suspected infected person is included in the persons existing in a certain range. Is divided into three levels, level 0 to level 2. In this way, the calculation unit 35 calculates the purification required level of the target area based on the number of persons detected in the target area and the number of suspected infected persons detected in the target area. 8 and 9 are diagrams for explaining a calculation example of the required purification level. In FIGS. 8 and 9, the white circle indicates the position of the non-infected person, and the hatched circle indicates the position of the suspected infected person.

For example, as shown in FIG. 8, there are a total of two people, one uninfected 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 purification required level of the first target area 61 to level 3 and the purification required level of the second target area 62 to level 1 based on the calculation standard of FIG.

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. 9, the calculation unit 35 may perform the calculation unit 35 in FIG. Based on the calculation standard, the required purification level of each of the first target area 61 and the second target area 62 is set to level 2.

The calculation standard in FIG. 7 is an example. For example, the required level of purification may be further subdivided according to the number of people existing in a certain range (for example, within a range of 2 m), or according to the number of suspected infected persons included in the people existing in a certain range. The required level of purification may be further subdivided. In addition, it is not essential that the number of suspected infected persons is used, and the calculation unit 35 calculates the required purification level based on the number of persons (whether or not they are suspected infected persons) existing in a certain range. You may.

When the purification required level is calculated by the calculation unit 35, the purification control unit 36 determines whether or not there are a plurality of target areas having the highest level (S26).

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

On the other hand, as shown in FIG. 9, when the purification control unit 36 determines that there are a plurality of target regions having the highest level (Yes in S26), the purification control unit 36 purifies the space 50 as a whole (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 be periodically changed.

As described above, in the operation example 1, when a plurality of target areas are specified by the specific unit 34, the purification control unit 36 locally purifies the target area having a relatively high purification required level among the plurality of target areas. However, when the required purification levels of the plurality of target areas are the same, the space 50 is purified as a whole.

Such a space purification system 10 can selectively perform local purification and overall purification based on the required purification level.

[Operation example 2 using the required purification level]
Next, 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 the infectious substance (hereinafter, also simply referred to as the infection risk). On the other hand, in the area of the space 50 where the suspected infected person was absent, the risk of infection is considered to be lower as the elapsed time from the absence of the suspected infected person is longer.

Therefore, in the operation example 2, the space 50 is divided into a plurality of small areas in a plan view, and the calculation unit 35 sets the required level of purification of the plurality of small areas as the elapsed time since there are no suspected infected persons in the small areas. Calculated based on (hereinafter, also simply referred to as elapsed time). FIG. 10 is a diagram showing the required purification level when a suspected infected person moves in the space in the operation example 2.

In FIG. 10, the space 50 is divided into a matrix in a plan view, and the positions of the small regions in the space 50 are represented by the 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 shown by the arrow, the change in the position of the suspected infected person according to the time (specifically, 13:00 to 13:18) changes. , As shown in FIG. FIG. 11 is a diagram showing an example of location information of a suspected infected person. As shown in FIG. 11, in the position information of the suspected infected person, the position of the detected suspected infected person 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 a calculation standard of the purification required level based on the elapsed time since the suspected infected person was absent. In the calculation standard shown in FIG. 12, the shorter the elapsed time, the lower the required purification level. In other words, the lower the risk of infection, the lower the level of purification required.

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

That is, each of the small areas included in the space 50 is regarded as a 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 more. As described above, in the operation example 2, the specific unit 34 refers to the position information stored in the storage unit 33 to refer to a small area (in other words, a predetermined area) including the position where the suspected infected person is detected in the space 50. The area) is specified as the target area from the time when the suspected infected person disappears until a certain period (for example, 30 minutes) elapses.

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 that the purification required level is set to level 3, and the small area (3, 2) has an elapsed time of 2 minutes. In (5, 2), since the elapsed time is 8 minutes, the required purification level is set to level 2. Since the elapsed time of the small area (5, 1) is 14 minutes, the purification required level is set to level 1. As described above, in the operation example 2, the calculation unit 35 calculates the purification required level of the target area based on the elapsed time from the absence of the suspected infected person in the target area. Since 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 purification required level, detailed description is omitted.

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

[Effects, etc.]
As described above, the space purification system 10 has a specific unit 34 that specifies a target area that needs to be purified in the space 50 based on information about a person staying in the space 50, and a target specified by the specific unit 34. It is provided with a purification control unit 36 that locally purifies the area.

Such a space purification system 10 can identify an area where the need for purification is presumed to be high based on information related to a person who may discharge an infectious substance 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 unit 32 that detects a person staying in the space 50. The identification unit 34 specifies an area of the space 50 including a position where a person is detected as a target area.

Such a space purification system 10 specifies a region including a position where a person who may discharge an infectious substance is detected as a target region. Therefore, the space 50 can be efficiently purified by locally purifying the target area.

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

Such a space purification system 10 specifies a region including a plurality of locations where a person who may discharge an infectious substance is detected as a target region. Therefore, the space 50 can be efficiently purified by locally purifying the target area.

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

In such a space purification system 10, the area where there is a concern about the spread of infection with an infectious substance due to the presence of suspected infected persons and non-infected persons within a certain range is specified as a target area. Therefore, the space 50 can be efficiently purified by locally purifying the target area.

Further, in the 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 specific unit 34 covers the area of the space 50 including the position where the suspected infected person is detected, from the time when the suspected infected person disappears until a certain period of time elapses. Identify as.

Such a space purification system 10 specifies an area where a suspected infected person who has a high possibility of discharging an infectious substance has stayed until the latest as a target area. Therefore, the space 50 can be efficiently purified by locally purifying the target area.

Further, in the operation example 1, the space purification system 10 further includes a calculation unit 35 for calculating a purification required level indicating the necessity of purification in the specified target area. When a plurality of target areas are specified by the specific unit 34, the purification control unit 36 locally purifies the plurality of target areas based on the required purification level.

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

Further, in the operation example 1, the calculation unit 35 calculates the purification required level of the target area based on the number of people detected in the target area.

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

Further, in the operation example 1, the calculation unit 35 calculates the purification required level 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. do.

Such a space purification system 10 can calculate the required 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.

Further, in the operation example 2, the calculation unit 35 calculates the required purification level of the target area based on the elapsed time since the suspected infected person was absent in the target area.

Such a space purification system 10 can calculate the required 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 areas are specified by the specific unit 34, the purification control unit 36 locally purifies the target area having a relatively high purification required level among the plurality of target areas. When the required purification levels of the plurality of target areas are the same, the space 50 is entirely purified.

Such a space purification system 10 can selectively perform local purification and overall purification based on the required purification level.

Further, 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 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 time. Can be done.

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

Such a space purification system 10 can locally purify the target area by using hypochlorous acid.

Further, in the space purification method executed by the space purification system 10 or the like, the target area requiring purification is specified in the space 50 based on the information about the person staying in the space 50, and the specified target area is locally specified. Purify to.

In such a space purification method, an area presumed to have a high need for purification can be specified as a target area based on information related to a person who may emit an infectious substance. 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 a nursing care facility, a hospital, or a waiting room of a hospital. The space purified by the space purification system may be an airport. Further, the space purified by the space purification system is not limited to the building, but may be a space inside a moving body such as a railroad or an airplane.

Further, in the above embodiment, the detection unit determines whether the 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. An example of detection is described separately, but such a configuration is not essential. When the detection unit does not distinguish between a suspected infected person and a non-infected person, the process described in the above embodiment may be performed assuming that all the persons staying in the space are suspected infected persons, or the space. The treatment described in the above embodiment may be performed assuming that all persons staying in the area are non-infected persons.

Further, in the above embodiment, the target area is specified by the position of the person in the space, the number of people, etc., but the target area is determined by the density of the person in the space, the gender of the person, the age of the person, and the like. May be specified. The target area may be identified based on information about the person staying in the space.

Further, in the above embodiment, another processing unit may execute the processing executed by the specific processing unit. Further, the order of the plurality of processes may be changed, or the plurality of processes may be executed in parallel.

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

In addition, each component may be realized by hardware. For example, a component such as a control unit may be a circuit (or an integrated circuit). These circuits may form one circuit as a whole, or may be separate circuits from each other. Further, each of these circuits may be a general-purpose circuit or a dedicated circuit.

In addition, general or specific embodiments of the present invention may be realized in recording media such as systems, devices, methods, integrated circuits, computer programs or computer-readable CD-ROMs. Further, it may be realized by any combination of a system, a device, a method, an integrated circuit, a computer program and a recording medium.

For example, the present invention may be realized as a space purification method, or as 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. It may be realized as a typical recording medium.

Further, in the above embodiment, the space purification system is realized by a plurality of devices. It may be realized as a single device. When the space purification system is realized by a plurality of devices, the components included in the space purification system described in the above embodiment may be distributed to the plurality of devices in any way.

Further, the space purification system may be realized as a client-server system. For example, the signal processing device may be realized as a server device, and the detection device and the purification device may be realized as a client device.

In addition, it is realized by applying various modifications to each embodiment that can be conceived by those skilled in the art, or by arbitrarily combining the components and functions of each embodiment within the range not deviating from the gist of the present invention. Also included in the present invention.

10 Space purification system 32 Detection unit 33 Storage unit 34 Specific unit 35 Calculation unit 36 Purification control unit 50 Space 53 Certain range

Claims (13)

Based on the information about the person staying in the space, the specific part that identifies the target area that needs purification in the space, and the specific part.
A space purification system including a purification control unit that locally purifies the target area specified by the specific unit. Further, a detection unit for detecting a person staying in the space is provided.
The space purification system according to claim 1, wherein the specific unit specifies an area of the space including a position where a person is detected as the target area. The space purification system according to claim 2, wherein when a plurality of people are detected in a certain range of the space, the specific unit specifies the certain range as the target area. The detection unit distinguishes and detects a person staying in the space as 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 space, the specific part specifies the certain range as the target area. The detection unit distinguishes and detects a person staying in the space as 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 includes 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 specific unit refers to the area including the position where the suspected infected person is detected in the space until a certain period of time elapses after the suspected infected person disappears. The space purification system according to claim 2, which is specified as a target area. Further, it is provided with a calculation unit for calculating the purification required level indicating the necessity of purification in the specified target area.
The space purification system according to claim 1, wherein the purification control unit locally purifies a plurality of the target areas based on the required purification level when a plurality of the target areas are specified by the specific unit. Further, a detection unit for detecting a person staying in the space is provided.
The space purification system according to claim 6, wherein the calculation unit calculates a required purification level of the target area based on the number of people detected in the target area. The detection unit distinguishes and detects a person staying in the space as a suspected infected person suspected of being infected with an infectious substance or a non-infected person other than the suspected infected person. death,
7. The calculation unit calculates the required purification level of the target area based on the number of persons detected in the target area and the number of suspected infected persons detected in the target area. The space purification system described in. Moreover,
A detection unit that distinguishes and detects a person staying in the space as a suspected infected person suspected of being infected with an infectious substance or a non-infected person other than the suspected infected person.
The space purification system further includes 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 specific unit refers to the area including the position where the suspected infected person is detected in the space until a certain period of time elapses after the suspected infected person disappears. Identify as the target area,
The space purification system according to claim 6, wherein the calculation unit calculates a required purification level of the target area based on the elapsed time since the suspected infected person was absent in the target area. When a plurality of the target areas are specified by the specific unit, the purification control unit may perform.
Of the plurality of target areas, the target area having a relatively high purification required level is locally purified.
The space purification system according to any one of claims 6 to 8, wherein the space is totally purified when the required purification levels of the plurality of target areas are the same. 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 space, and the number of coughs or sneezes within a predetermined time. 8. The 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 specified target area using hypochlorous acid. Based on the information about the people staying in the space, identify the target area in the space that needs purification,
A space purification method for locally purifying the specified target area.

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