WO2022009394A1 - Infection control device, infection control method, and infection control program - Google Patents

Abstract

An infection control device (1) according to the present invention is characterized by being provided with an input/output processing unit (21) which causes an output device to display regions where infectious substances emanating from people staying in a room are estimated to be present on the basis of the positions and motions of the people. The infection control device (1) is further characterized by being provided with a motion analysis unit (22) which stores the people's motions in chronological order and which also stores the regions in association with the people.

Description

Infection control equipment, infection control methods and infection control programs

The present invention relates to an infection control device, an infection control method, and an infection control program.

Recently, an unknown virus has spread to society, and public health measures in offices are a management issue that determines the business continuity of companies. In particular, the conference room accommodates an unspecified number of people, so it tends to become a cluster of infections. Therefore, recently, the technology of controlling the infection in the room by the computer has become widespread.

The infectious substance monitoring system of Patent Document 1 has a detection unit (fixed type or mobile type) for detecting an infectious substance and an image acquisition unit (camera) for capturing a person. The detection unit and the image acquisition unit are installed in the room, and an air-conditioned air flow is generated in the room. When the detection unit detects an infectious substance, the system identifies a person who coughs, sneezes, etc. on the windward side of the air flow as a "suspicious discharger" and displays a facial image thereof. If more than one person is applicable, the suspected discharger is the person whose time between the time of coughing and the time of detection is equal to the time of airflow moving from the position of coughing to the position of the detection unit.

The entry / exit management system of Patent Document 2 identifies an infected person based on a declaration from the person or imaging data. Then, the system identifies a person who was in the vicinity of the infected person during the infectable period as an infected skeptic based on the usage history of the conference room, and prohibits the infected skeptic from entering the specific room.

Japanese Unexamined Patent Publication No. 2019-8339 Japanese Unexamined Patent Publication No. 2019-20503

There is a need to visually recognize images of people who are likely to spread infectious substances and areas (spaces, mediators) where infectious substances are likely to exist on the same screen. The infectious substance monitoring system of Patent Document 1 focuses on identifying the person who became the source of infection, and does not visualize how the infection spreads from the person who is the source of infection to another person. No. The entry / exit management system of Patent Document 2 focuses on identifying a person who was in the vicinity of the infected person, and does not visualize the specific movement (dialogue, wearing a mask, etc.) of the infected person.
Therefore, it is an object of the present invention to visualize the specific movement of a person and the area where an infectious substance is likely to be present.

The infection control device of the present invention is characterized by including an input / output processing unit that displays on an output device an area in which an infectious substance emitted by a person is presumed to be present, based on the position and operation of a person staying in the room. And.
Other means will be described in the form for carrying out the invention.

According to the present invention, it is possible to visualize the specific movement of a person and the area where an infectious substance is likely to be present.

It is a figure explaining the structure of the infection control apparatus. This is an example of affiliation information. This is an example of operation information. This is an example of contact information. This is an example of environmental information. This is an example of meeting information. This is an example of notification information. It is a figure (side view of a conference room) explaining an area. It is a figure (plan view of a conference room) explaining an area and a locus. It is a flowchart of the infection identification pretreatment procedure. It is a flowchart of the post-processing procedure after the infection was found.

Hereinafter, a mode for carrying out the present invention (referred to as “the present embodiment”) will be described in detail with reference to figures and the like. This embodiment is an example in which people gather in a conference room. However, the present invention is generally applicable to closed spaces where a large number of people are crowded, such as restaurants, commercial facilities, entertainment facilities, schools, transportation bases, vehicles, and the like.

(Configuration of infection control device, etc.)
FIG. 1 is a diagram illustrating a configuration and the like of the infection control device 1. The infection control device 1 is a general computer (server, personal computer, mobile terminal device, etc.). The infection control device 1 includes a central control device 11, an input device 12 such as a mouse and a keyboard, an output device 13 such as a display, a main storage device 14, an auxiliary storage device 15, and a communication device 16. These are interconnected by a bus.

The auxiliary storage device 15 stores affiliation information 31, operation information 32, contact information 33, environment information 34, conference information 35, and notification information 36 (all of which will be described in detail later). The input / output processing unit 21, the operation analysis unit 22, and the infection control unit 23 in the main storage device 14 are programs. The central control device 11 reads these programs from the auxiliary storage device 15 and loads them into the main storage device 14, thereby realizing the functions of the respective programs (details will be described later). The auxiliary storage device 15 may be configured independently of the infection control device 1.

A plurality of participants (people) 7 are staying in the conference room 3. Each of the participants 7 carries a mobile terminal device 8. A camera 4, a speaker / microphone 5, a mobile body 6, and a radio base station 9 are present in the conference room 3. The camera 4, the speaker microphone 5, and the radio base station 9 are connected to the infection control device 1 via the network 2. The camera 4 is installed at an arbitrary position on the ceiling or the wall, and images the furniture and the like in the participants 7 and the conference room 3. The speaker / microphone 5 acquires the sound inside the conference room 3 and outputs the sound toward the inside of the conference room 3. The mobile body 6 and the mobile terminal device 8 are connected to the network 2 via the radio base station 9. The moving body 6 is, for example, a mobile vacuum cleaner, travels on the floor surface of the conference room 3, images the participants 7 and the furnishings in the conference room 3, and cleans the floor surface as an original function.

(Affiliation information)
FIG. 2 is an example of affiliation information 31. In the affiliation information 31, the name is in the name column 102, the affiliation is in the affiliation column 103, the infection first day is in the infection first day column 104, and the face photo column 105 is associated with the personal ID stored in the personal ID column 101. A face photo is stored in the image, and an e-mail address is stored in the e-mail address field 106.

The personal ID in the personal ID column 101 is an identifier that uniquely identifies a person who can be a participant 7 of the conference.
The name in the name column 102 is the name of the participant 7, but here, it is simplified as "Mr. A".
The affiliation of the affiliation column 103 is the company name to which the participant 7 belongs (column 103a), the department name in the company (column 103b), and the post in the department (column 103c). If this information is unknown, the field remains blank.

The first day of infection in column 104 of the first day of infection is the first date on which the infectious substance is presumed to have invaded the body when the participant 7 is found to be infected with an infectious substance (virus, etc.). be. In other words, the first day of infection is not the day of onset, but the first day of the incubation period. In many cases, Participant 7 attends the meeting on the assumption that he / she is not infected with an infectious substance. In that sense, the field is usually blank. When the participant 7 becomes aware of the symptom, he / she undergoes an examination at a medical institution or the like. When the test reveals that the patient is infected, the doctor or the like hears the symptoms in the near past from the participant 7 and estimates the first day of infection. At the time when the first day of infection is stored in the first day of infection column 104, the participant 7 may be isolated at home or the like.

The face photograph of the face photograph column 105 is a photograph of the face of the participant 7 taken from the front. The photograph here is the name and extension of the photograph attached to the photograph, and the photograph itself is stored in an arbitrary storage place. If the face photo cannot be obtained, the column is blank.
The e-mail address in the e-mail address field 106 is the e-mail address of the mobile terminal device 8 of the participant 7.
In many cases, the names of participants 3 in the rental conference room cannot be specified. In this case, the infection control device 1 can anonymously assign a temporary personal ID to the participants without providing the affiliation information 31.

(Operation information)
FIG. 3 is an example of the operation information 32. In the operation information 32, in association with the conference room ID stored in the conference room ID column 111, the position information column 112 has the position information, the time column 113 has the time, and the participant ID column 114 has the participant ID. However, the attention operation column 115 stores the attention operation, the evaluation column 116 stores the evaluation, the diffusion flag column 117 stores the diffusion flag, and the thermodiagnosis result column 118 stores the thermodiagnosis result.

The conference room ID in the conference room ID column 111 is an identifier that uniquely identifies the conference room.
The position information in the position information column 112 is three-dimensional information indicating the position of the head of the participant 7 in the conference room. The position information can be acquired by using the camera 4 as a three-dimensional camera (ToF camera). It is also possible to substitute the GPS information acquired from the mobile terminal device 8 or the position information of the mobile terminal device 8 surveyed by the plurality of radio base stations 9 as the position of the head. In addition, "#" indicates a different numerical value abbreviated (the same applies to "♭" described later).
The time in the time field 113 is the year, month, day, hour, minute, and second at the time when the position information was acquired.

The participant ID in the participant ID column 114 is the individual ID of the participant 7 who participated in the conference. The infection control device 1 can acquire a personal ID by collating the image acquired by the camera 4 with the facial photograph of the affiliation information 31. In addition, the infection control device 1 may acquire a personal ID from the mobile terminal device 8 or from a card reader or the like near the entrance of the conference room. Further, the infection control device 1 may assign an automatically assigned personal ID to the participant each time the camera 4 captures an anonymous participant whose name or the like cannot be specified.

The attention movement in the attention movement column 115 is a movement (column 115a) that should be paid particular attention in order to know the presence or absence of infection among the movements of the participant 7. The camera 4 can detect the motion of interest by a known method such as pattern matching. A three-dimensional line-of-sight vector "[♭, ♭, ♭]" is attached to the attention motion. The line-of-sight vector is a unit vector whose component is the coordinate value of the local coordinate system with the head of the participant 7 as the origin, and indicates the direction in which the line-of-sight of the participant 7 is facing.

The line-of-sight vector is an example of a vector indicating the direction in which air is naturally discharged from the participant's mouth or nose, and is used to draw the area described later. In addition, as a part of the attention operation, "mask wearing" and "mask removal" may be stored in the mask information column 115b. “Wearing a mask” indicates that the participant 7 is wearing a mask (face shield) that covers the mouth and nose. "Mask removal" indicates that the mask worn by the participant 7 has been removed.

The evaluation in the evaluation column 116 is either "diffusion" or "decontamination". "Diffusion" indicates that if the participant is infected with an infectious substance, the action of interest facilitates the spread of the infectious substance. "Decontamination" indicates that if the conference room is contaminated with infectious substances, attention actions such as opening windows to ventilate and clean the meeting room suppress the spread of infectious substances.

The diffusion flag in the diffusion flag column 117 is either "G" or "T". A "G" indicates that the participant 7 gave the other participant 7 an infectious substance, and a "T" indicates that the participant 7 receives the infectious substance from the other participant 7. Indicates that it is taken. However, "given" and "received" here have a hypothetical meaning that "if the participant 7 is infected, it is considered as such". The infection control device 1 can also distinguish between "G" and "T" by analyzing the voice of the participant acquired by the speaker / microphone 5.

The thermodiagnosis result in the thermodiagnosis result column 118 is "attention" indicating that the body temperature of the participant 7 is at a level to be noted. The camera 4 can acquire the body temperature of the participant 7 by receiving the infrared rays emitted by the participant 7. For example, if the body temperature of the participant 7 exceeds 38 ° C., it is highly possible that the participant 7 is infected.

The infection control device 1 creates a record of operation information 32 (FIG. 3) each time a attention operation occurs. Looking at FIG. 3 as a whole, we can see the following. Hereinafter, "participant P01" and the like will be abbreviated as "P01" and the like unless misunderstanding occurs.
-P01, P02, P03 and P04 were seated in the chairs in the conference room R01 between 10:00 and 10 seconds on May 1, 2020. P01 wore a mask, but his body temperature was high.
・ At 10:00:00, P04 opened the window of the conference room.
・ At 10:00:00, P01 made a presentation while wearing a mask. Although not shown in FIG. 3, P01 continues to announce after that.

・ At 10:15:00, P01 took off his mask and spoke to P02, and P02 responded in short words (question and answer during the presentation). If P01 is infected with an infectious substance, it is possible that the infectious substance is infected with P02 at this time.
・ At 10:30, P01 shook hands with P04 while wearing a mask (greeting at the end of the meeting). If P01 is infected with an infectious substance, it is possible that the infectious substance is infected with P04 at this time.
・ At 18:00:00, P10 cleaned the conference room R01. P10 is a cleaner of a building maintenance company, even though he is a participant.

(Contact information)
FIG. 4 is an example of contact information 33. In the contact information 33, the conference room ID is in the conference room ID column 122, the area ID is in the area ID column 123, and the area demarcation information column 124 is associated with the contact opportunity ID stored in the contact opportunity ID column 121. The area demarcation information is, the time is in the time column 125, the attention action is in the attention action column 126, the accuracy is in the accuracy column 127, the cause is in the cause column 128, and the contact person is in the contact column 129. Is remembered.

The contact opportunity ID in the contact opportunity ID column 121 is an identifier that uniquely identifies the contact opportunity. Contact opportunities are events in a conference room that facilitate the spread of infectious substances from one participant to another. The term "contact" here includes the case where the body actually touches each other like a handshake and the case where the body is sufficiently close (a part of the body enters the area described later).
The conference room ID in the conference room ID column 122 is the same as the conference room ID in FIG.

The area ID in the area ID column 123 is an identifier that uniquely identifies the area. The area is a partial space in the conference room where an infected person is likely to have an infectious substance emitted from the mouth, nose, or the like. For example, an area is generated in front of the participant 7 who is speaking without wearing a mask, and other participants 7 should avoid contacting (entering) the area.

The area demarcation information in the area demarcation information column 124 is a set of coordinate values that demarcate the part corresponding to the area in the space in the conference room 3. The number of dimensions of the coordinate values depends on the shape of the area. For example, if the area is a cone with the head of participant 7 as the apex (in the case of dialogue), the number of dimensions of the area demarcation information is from the 3D coordinates of the apex, the 3D coordinates of the center of the bottom surface, and the radius of the bottom surface. It is 7 dimensions. For example, when the region is a sphere centered on the hand of the participant 7 (in the case of a handshake), the number of dimensions of the region demarcation information is four dimensions including the three-dimensional coordinates of the hand and the radius of the sphere.

The time in the time column 125 is the year, month, day, hour, minute, and second when the contact opportunity occurs.
Of the attention movements in FIG. 3, the attention movement in the attention movement column 126 is evaluated as “infection”.

The accuracy in the accuracy column 127 is an assumed concentration of an infectious substance that seems to exist in the region (not a value measured by a sensor or the like). The accuracy here is expressed in two stages of "large" and "small", but the number of stages may be larger, or the accuracy may be a continuous numerical value. The criteria for calculating the accuracy by the infection control device 1 are as follows, for example.
・ The accuracy is small when wearing a mask and large when the mask is removed. ・ The louder the speaker's voice acquired by the speaker, the higher the accuracy.
・ As a result of the thermo diagnosis, the higher the body temperature, the higher the accuracy.
-The smaller the ventilation ratio (details below), the greater the accuracy.

The cause of the cause column 128 is the personal ID of the participant 7 with the diffusion flag “G”.
The contact person in the contact person column 129 is the personal ID of the participant 7 with the diffusion flag “T”.

(Relationship between Fig. 3 and Fig. 4)
The infection control device 1 creates a record of contact information 33 (FIG. 4) each time a noticeable operation whose evaluation is "diffusion" occurs. The record 130a in FIG. 4 corresponds to the records 119b and 119c in FIG. The record 130b in FIG. 4 corresponds to the records 119d and 119e in FIG. Now, suppose that the evaluation of record 119a is "diffusion" due to the fact that the mask information field 115b of record 119a in FIG. 3 is blank. Then, the infection control device 1 creates the record of FIG. 4 corresponding to the record 119a of FIG.

At this time, if the volume of the area is small as a result of the small voice volume of P01 and there is no one in front of P01, the contact column 129 is blank in the created record of FIG. The region has the ability to infect the participant 7 who has entered the region with an infectious substance for a while after the occurrence. For example, the area W01 of the record 130a in FIG. 4 also has a power to infect participants other than P02 in a predetermined period after 10:15:00.

(Disappearance of contact information)
For example, in the following cases, the infection control device 1 may delete the record of the contact information 33 once created, or may add an invalidation flag to the record.
-A predetermined time has elapsed starting from the time in the time column 125.
-Attentional action "cleaning" was performed on that area.
・ The window of the conference room was opened.
-The ventilation ratio of the air conditioning in the conference room has exceeded the specified threshold (details below).

(Environmental information)
FIG. 5 is an example of the environmental information 34. In the environmental information 34, the time is stored in the time column 132 and the air conditioning condition is stored in the air conditioning condition column 133 in association with the conference room ID stored in the conference room ID column 131.
The conference room ID in the conference room ID column 131 is the same as the conference room ID in FIG.
The time in the time column 132 is the year, month, day, hour, minute, and second when the air conditioning condition is measured or set.

The air-conditioning condition in the air-conditioning condition column 133 is a value measured by a sensor of the air conditioner (not shown) for the conference room or set (commanded) for the air conditioner, and here, the wind speed (wind speed (not shown)). Column 133a), wind direction (column 133b) and ventilation ratio (column 133c). Of these, the wind direction is a three-dimensional unit vector having coordinate values of the local coordinate system with the air outlet of the air conditioner as the origin as a component, and indicates the direction in which the air moves. The ventilation ratio is the ratio of the outside air to the volume of the air blown out by the air conditioner. The air conditioning condition may be another kind of numerical value as long as it can be used as a reference when drawing the area. The air conditioning condition is an example of an environmental condition indicating the general quality of air in the conference room. Other examples of environmental conditions include the position of partitions.

(Meeting information)
FIG. 6 is an example of the conference information 35. In the conference information 35, in association with the conference ID stored in the conference ID column 141, the conference room ID column 142 has the conference room ID, the camera presence / absence column 143 has the camera presence / absence, and the time column 144 has the time. Participants are stored in the participant column 145.

The conference ID in the conference ID column 141 is an identifier that uniquely identifies the conference. A meeting is a place for discussions or reports held by a plurality of participants 7.
The conference room ID in the conference room ID column 142 is the same as the conference room ID in FIG. 3, but here, the conference room in which the conference was held is specified.
The presence / absence of the camera in the camera presence / absence column 143 is the presence / absence of the camera 4 inside the conference room 3.
The time in the time column 144 is the time (start time and end time) at which the meeting was held.
Participants in the participant column 145 are the individual ID of the convener of the conference (column 145a) and the individual ID of the convener (column 145b).

As shown in FIG. 6, four conferences M01, M02, M03 and M04 were held on May 1, 2020, and the participants as shown in FIG. 6 participated in each conference. Then, on May 4, 2020, the following facts were discovered.
-P01 is infected with an infectious substance. However, as of May 1, the fact has not yet been clarified.
-The first day of infection was April 30, 2020.
・ The incubation period continued until May 3.
In this case, the user of the infection control device 1 considers the following measures based on the following facts. The thick arrow in FIG. 6 indicates the same conference room and the same participants.

<About record 146a>
-P02, P03 and P04 were in the same conference room R01 as P01 in the conference M01.
-Of these, P02 (diffusion flag "T") and P04 (diffusion flag "T") were found to have been infected from P01 (diffusion flag "G") after the fact.
-The user should notify P02 and P04 that they may be infected. The user should also notify P03 to be careful just in case.

<About record 146b>
-Only 30 minutes after the conference M01, the conference M02 was held in the same conference room R01.
-The user should also notify P21, P22, and P23 who were attending the conference M02 to be careful just in case.

<About record 146c>
-Meeting M03 was held in the meeting room R02 only 30 minutes after the meeting M01.
-Infected P01 participated in the conference M03. P32, P33 and P34 who participated in the conference M03 may or may not have been infected from P01 (the conference room R02 is not equipped with a camera and cannot be known).
-The user should also notify P32, P33 and P34 to be careful just in case.

<About record 146d>
-Meeting M04 was held in the meeting room R03 only 90 minutes after the meeting M01. P03, P42 and P43 participated in the conference M04. Of these, P03 was in the same conference room R01 as the infected P01 until 90 minutes ago.
-The user should also notify P42 and P43 to be careful just in case.

(Notification information)
FIG. 7 is an example of the notification information 36. In the notification information 36, the time is in the time column 152, the receiver is in the receiver column 153, the receiver room is in the receiver room column 154, and the notification content is associated with the notification ID stored in the notification ID column 151. / The content of the notification and the strength are stored in the strength column 155, and the description is stored in the description column 156.

The notification ID in the notification ID field 151 is an identifier that uniquely identifies the notification. The notification is an e-mail emitted to each mobile terminal device 8 or a voice emitted via a speaker microphone 5 in the conference room 3.
The time in the time field 152 is the year, month, day, hour, minute, and second at the time when the notification is issued.
The receiver in the receiver field 153 is the individual ID of the participant who receives the notification as an e-mail via his / her mobile terminal device 8.

The receiving room in the receiving room column 154 is the conference room ID of the conference room that receives the notification as the voice of the speaker / microphone 5. The notification content / the notification content in the intensity column 155 is a specific wording of the notification. The intensity is a numerical value indicating the intensity of notification (severity of infection), and the larger the numerical value, the greater the intensity (details will be described later). Further, the content of the notification may be music without vibration or wording, which changes depending on the intensity.
The description in the description column 156 is a wording explaining each record.

(Intensity of notification)
It is up to the user to decide what kind of wording the notification content should be. In this embodiment, the intensity is set to "1" or "2" before the fact that the participant is infected is found, and the intensity is set to "3 to 6" after the fact is found. In the following description, it is assumed that P01 was found to be infected after the fact.

<Strength: 1>
For example, when the participants are facing each other and trying to sit down, the infection control device 1 transmits a notification "Please do not face directly in front" to the speaker microphone 5 in the conference room (notification C01). For example, when some of the participants do not wear a mask, the infection control device 1 transmits a notification "Please wear a mask" to the speaker microphone 5 in the conference room (notification C02).

<Strength: 2>
When a participant enters the area due to, for example, dialogue, shaking hands, etc., the infection control device 1 sends a notification "Please be careful about physical condition management" to the participant's mobile terminal device 8. (Notifications C03 and C04).

<Strength: 3>
The infection control device 1 transmits a notification "Please pay special attention to physical condition management" to the speaker / microphone 5 of the conference room R01 where P01 was located (notification C09). The infection control device 1 sends a notification "Please pay special attention to physical condition management" to the mobile terminal device 8 of the participants of other conferences in which P03 who was in the same conference room as P01 participated (notifications C13 and C14). ..

<Strength: 4>
The infection control device 1 sends a notification "It is recommended to consult a doctor" to the mobile terminal device 8 of the participants of other conferences in which P01 participates (notifications C10 to C12). The infection control device 1 participates in the same meeting as P01 and sends a notification "It is recommended to see a doctor" to the mobile terminal device 8 of P03 whose evaluation is not "T". (Notification C07).

<Strength: 5>
The infection control device 1 participates in the same conference as P01, and sends a notification "Be sure to receive a doctor's diagnosis" to the mobile terminal devices 8 of P02 and P04 whose evaluation is "T" (Notification C06). And C08).

<Strength: 6>
The infection control device 1 sends a notification "Please recuperate at home" to the mobile terminal device 8 on P01 (notification C05).

FIG. 8 is a diagram (side view of the conference room 3) for explaining the area. When P51 announces, the infection control device 1 creates a region 41 in front of P51. The region 41 is, for example, a cone having the head of P51 as an apex. Now, the following equation 1 holds between the three-dimensional vectors X, Y and Z.
Y = αX + βZ (Equation 1)

Y is a vector whose component is the coordinate value of the center of the bottom surface of the cone 41 in the coordinate system whose origin is the head of P51. X is the line-of-sight vector of P51. Z is a unit vector indicating the wind direction described above. α is any positive coefficient. α may be a value proportional to the voice volume (estimated value of the volume of emitted air) of P51 measured by the speaker / microphone 5 or the speaking time. Further, when the attention movement of the participant includes a substance that suppresses infection (wearing a mask, etc.), the value of α may be smaller than that in the case where it is not. β is the wind speed of the air conditioner.

The radius of the cone 41 is, for example, a value obtained by multiplying the magnitude of the vector Y by a predetermined constant γ. The color density of the region (cone) 41 increases (becomes darker) in proportion to the accuracy described above, for example. Similarly, when P52 announces, a region 42 is generated in front of P52. The description of the region 42 is the same as that of the region 41.

In FIG. 8, the region 41 is larger than the region 42 because the voice volume of the P51 is larger than that of the P52 (or the speaking time is longer), but the wind of the air conditioner is directed from P51 to P52. It depends on what you are doing. The concentration indicating the accuracy of the region 41 is smaller than that of the region 42 because, for example, the body temperature of P51 is lower than the body temperature of P52.

FIG. 9 is a diagram (plan view of the conference room 3) for explaining the area and the locus. The region 43 is a cross section obtained by cutting the union of the regions 41 and 42 of FIG. 8 at the upper surface of the table 45 of FIG. 9, and is a plane to which an infectious substance is particularly likely to adhere. This plane is also hereafter referred to as the "attention plane". The locus 44 is the locus of P52 from the time P52 entered the conference room 3 to the present. The locus is generated only for P52 because, for example, P52 did not wear a mask or was found to be infected after the fact.

(Procedure for pre-treatment of infection)
FIG. 10 is a flowchart of the pretreatment procedure for finding out infection. As a precondition for starting the infection detection pretreatment procedure, the infection control unit 23 of the infection control device 1 creates affiliation information 31 (FIG. 2), environment information 34 (FIG. 5), and conference information 35 (FIG. 6), and is the latest. It is assumed that the information is stored in the auxiliary storage device 15 in the state of.

In step S201, the input / output processing unit 21 of the infection control device 1 reads out the affiliation information 31 (FIG. 2). Specifically, the input / output processing unit 21 reads out the affiliation information 31 from the auxiliary storage device 15.
In step S202, the input / output processing unit 21 reads out the environment information 34 (FIG. 5). Specifically, the input / output processing unit 21 reads out the environment information 34 from the auxiliary storage device 15.

In step S203, the operation analysis unit 22 of the infection control device 1 starts monitoring the conference. Specifically, the motion analysis unit 22 starts to acquire an image (moving image) from the camera 4 or the moving body 6 in the conference room 3 when the start time of a conference arrives, and the speaker / microphone 5 Start getting audio from.

In step S204, the motion analysis unit 22 creates a record of motion information 32 (FIG. 3). Specifically, the motion analysis unit 22 creates a record of motion information 32 each time a noteworthy image is generated in the screen captured by the camera 4, and stores the record, the image (frame) at that time, and the sound as auxiliary storage. Store in device 15. The motion analysis unit 22 may acquire the participant's personal ID by referring to the facial photograph, or obtains a newly assigned personal ID for the participant's image that does not match any existing facial photograph. May be assigned. Further, the motion analysis unit 22 can analyze the motion in more detail based on the voice acquired in synchronization with the motion in addition to the motion on the image. For example, the motion analysis unit 22 attaches the diffusion flag “G” to the one with the louder voice in the dialogue between the two humans.

In step S205, the motion analysis unit 22 determines whether or not the attention motion corresponding to the diffusion has occurred. Specifically, when the motion analysis unit 22 stores "diffusion" in the evaluation column 116 of the new record of the motion information created by itself (step S205 "Yes"), the motion analysis unit 22 proceeds to step S206. In other cases (step S205 “No”), the motion analysis unit 22 stands by as it is. The motion analysis unit 22 has contact with the region (infection) based on the time when the participant was in contact with the region or the behavior of the participant (presence / absence of mask) when the participant was in contact with the region. Possibility) is judged.

In step S206, the motion analysis unit 22 creates a record of contact information 33 (FIG. 4). Specifically, a record of contact information 33 is created, and the record is stored in the auxiliary storage device 15.

In step S207, the input / output processing unit 21 of the infection control device 1 displays the area. Specifically, first, the input / output processing unit 21 defines the region (reference numeral 41, etc.) of FIG. 8 based on the operation information 32, the contact information 33, and the environment information 34.
Secondly, the input / output processing unit 21 synthesizes the region defined in the “first” of step S207 with respect to the image of the entire conference room at the time when the attention operation corresponding to the diffusion occurs, and the result is “the first”. Let's say "1 map". The first map does not necessarily have to be a side view of the conference room.

Thirdly, the input / output processing unit 21 provides the above-mentioned attention plane and the locus of the participants (diffusion flag “G”) with respect to the image of the entire conference room at the time when the attention operation corresponding to diffusion occurs. Combine and use the result as a "second map". The second map does not necessarily have to be a plan view of the conference room.
Fourth, the input / output processing unit 21 displays the first map and the second map on the output device 13.

In step S208, the infection control unit 23 of the infection control device 1 creates a record of the notification information 36 (FIG. 7). Specifically, the infection control unit 23 creates a record in the notification information 36 whose notification intensity is “1” or “2” according to the attention operation.

In step S209, the input / output processing unit 21 of the infection control device 1 transmits a notification. Specifically, the input / output processing unit 21 transmits a notification to the mobile terminal device 8 of a participant (diffusion flag “T”) who may be infected with an infectious substance. The notification at this time is, for example, C03 or C04 in FIG.

In step S210, the input / output processing unit 21 transmits an instruction to the mobile body or the like. Specifically, first, the input / output processing unit 21 cleans the floor surface of the conference room 3 while moving along with the second map on a plane or space including the locus 44 on the second map (infection). An instruction to remove the sex substance) is transmitted to the moving body 6.
Second, the input / output processing unit 21 transmits the second map to the mobile terminal device 8 of the participant (or the cleaning staff of the building management company) who is on duty for cleaning. Then, the participants and the like clean the parts of the surface of the furnishings and the like that may be infected with the infectious substance. After that, the pretreatment procedure for finding out the infection is terminated.

(Modification example)
The input / output processing unit 21 of the infection control device 1 monitors the arrangement of participants and the presence / absence of masks at arbitrary timings without proceeding to step S205, and based on the results, the notifications C01 and C02 in FIG. 7 are used. May be sent. Further, when the conference ends without the attention operation occurring in step S205, step S206 may be omitted and the process proceeds to step S207, and the area based on the operation information may be displayed on the output device 13.

(Procedure for post-treatment after infection is found)
FIG. 11 is a flowchart of the post-infection processing procedure. It is assumed that the pre-infection processing procedure has already been executed on the premise of starting the post-infection processing procedure.

In step S301, the infection control unit 23 of the infection control device 1 determines whether or not the infection report has been accepted. The infection report is a report to the user (operator of the infection control device 1) by the participant himself / herself that he / she has been infected with the infectious substance. When the infection control unit 23 accepts that the user inputs the fact that such a report has been received and the first day of infection into the input device 12 (step S301 “Yes”), the infection control unit 23 proceeds to step S302. In other cases (step S301 “No”), the infection control unit 23 stands by as it is. For convenience of explanation, it is assumed here that P01 is infected and the first day of infection is April 30, 2020. The infection control unit 23 may determine whether or not the infection report has been accepted at predetermined time intervals, for example, one hour.

In step S302, the infection control unit 23 stores the first day of infection. Specifically, the infection control unit 23 stores the first day of infection in the first day of infection column 104 of the participant's record of the affiliation information 31 (FIG. 2).
In step S303, the input / output processing unit 21 of the infection control device 1 reads out the conference information 35 (FIG. 6) regarding the participants who have received the infection report. Specifically, the input / output processing unit 21 reads out the conference information 35 from the auxiliary storage device 15.

In step S304, the infection control unit 23 of the infection control device 1 identifies a contact person for the infected person. Specifically, the infection control unit 23 specifies the following as the target of notification based on the conference information 35.
<Target of notification of strength "3">
-Participants who participated in the same conference as P01 (P03) and participants who held other conferences (notifications C13 and C14 in FIG. 7).
-The conference room itself where P01 was (Notice C09 in Fig. 7)

<Target of notification of strength "4">
-Participants who participated in the same conference as P01 in the conference room without the camera 4 (notifications C10 to C12 in FIG. 7)
-Among the participants who participated in the same conference as P01, those whose diffusion flag is not "T" (notification C07 in FIG. 7).
<Target of notification of strength "5">
-Among the participants who participated in the same conference as P01, those whose diffusion flag is "T" (notifications C06 and C08 in FIG. 7).

<Target of notification of strength "6">
・ The person who made the declaration P01 (Notice C05 in Fig. 7)

In step S305, the infection control unit 23 creates a record of the notification information 36 (FIG. 7). Specifically, the infection control unit 23 creates a record in the notification information 36 whose notification intensity is “3” to “6”.
In step S306, the input / output processing unit 21 of the infection control device 1 transmits a notification. Specifically, the input / output processing unit 21 transmits a notification to the participant's mobile terminal device 8 or the speaker microphone 5 in the conference room specified in step S304. The notifications at this time are, for example, notifications C05 to C14 in FIG. 7. After that, the post-treatment procedure after infection is found is terminated.

In Fig. 6, four meetings are held in a short period of time. If the conferences M02, M03 and M04 are held after a predetermined period starting from the conference M01, the infection control unit 23 does not need to send the notifications 09 to C14 in FIG. 7. In other words, participants who attended the same conference as P01 prior to the general incubation period of the infection do not need to be notified C09-C14. As a result, even if the participant of the contacted partner (for example, P01) is infected, if the partner has already recovered spontaneously, the participant who has contacted after the complete cure (for example, P32) is given extra anxiety. You don't have to.

(Effect of this embodiment)
The effects of the infection control device of this embodiment are as follows.
(1) The infection control device can display the area where the infectious substance is presumed to be present. Then, the cleaning (management) company who sees this display can know the priority cleaning (management) location, and can perform the necessary work while being aware of the danger.
(2) The infection control device can store the area in association with the person and the time.
(3) The infection control device can specify an area based on various human actions and environmental conditions.
(4) The infection control device can display the probability that the area contains an infectious substance.

(5) The infection control device can identify the infection route from person to person.
(6) The infection control device can realistically determine the possibility of infection according to the contact time with a person and the specific movement of the person.
(7) The infection control device can notify a person to be careful about infection.
(8) The infection control device can notify a person of the seriousness of the infection step by step.

(9) The infection control device can eliminate the blind spot when discovering the area.
(10) The infection control device can effectively utilize the cleaning robot.
(11) The infection control device can notify a person again after the actual infection is found.
(12) The infection control device can notify the conference room.

The present invention is not limited to the above-described embodiment, but includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the configurations described. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, it is possible to add / delete / replace a part of the configuration of each embodiment with another configuration.

Further, each of the above-mentioned configurations, functions, processing units, processing means and the like may be realized by hardware by designing a part or all of them by, for example, an integrated circuit. Further, each of the above configurations, functions, and the like may be realized by software by the processor interpreting and executing a program that realizes each function. Information such as programs, tables, and files that realize each function can be placed in a memory, a recording device such as a hard disk or SSD (Solid State Drive), or a recording medium such as an IC card, SD card, or DVD.
In addition, the control lines and information lines indicate what is considered necessary for explanation, and do not necessarily indicate all the control lines and information lines in the product. In practice, it can be considered that almost all configurations are interconnected.

1 Infection control device 2 Network 3 Conference room 4 Camera (information acquisition means)
5 Speaker / Microphone 6 Mobile 7 Participants (people)
8 Mobile terminal device 9 Radio base station 11 Central control device 12 Input device 13 Output device 14 Main memory device 15 Auxiliary storage device 16 Communication device 21 Input / output processing unit 22 Operation analysis unit 23 Infection control unit 31 Affiliation information 32 Operation information 33 Contact Information 34 Environmental information 35 Meeting information 36 Notification information 41, 42, 43 Area 44 Trajectory

Claims (14)

1. Provided with an input / output processing unit that displays on the output device the area in which the infectious substance emitted by the person is presumed to be present, based on the position and movement of the person staying in the room.
   An infection control device characterized by.
2. Provided with a motion analysis unit that stores the motion of the person in time series and stores the area in association with the person.
   The infection control device according to claim 1.
3. The movement of the person is
   Including an action of promoting the spread of the infectious substance and an action of suppressing the spread of the infectious substance.
   The input / output processing unit
   Displaying the area on the screen of the output device based on the environmental conditions in the room,
   2. The infection control device according to claim 2.
4. The motion analysis unit
   Determining the probability that the region contains the infectious agent based on the movement of the person.
   The infection control device according to claim 3.
5. The motion analysis unit
   Identifying the person who originated the area and the person who came into contact with the area.
   The infection control device according to claim 4.
6. The motion analysis unit
   Determining the possibility of infection based on the time of contact with the area or the movement of the person when in contact with the area.
   The infection control device according to claim 5.
7. The input / output processing unit
   Notifying people who may have been infected with the infectious substance,
   The infection control device according to claim 6.
8. The input / output processing unit
   Changing the notification content according to the seriousness of the infection,
   7. The infection control device according to claim 7.
9. The motion analysis unit
   The area based on information obtained from at least one of an information acquisition means installed at an arbitrary position in the room, a moving body capable of moving to an arbitrary position in the room, or a terminal device carried by the person. To define,
   The infection control device according to claim 8.
10. The input / output processing unit
    Sending instructions to the moving body to remove the infectious substance while moving in a plane or space containing the locus of the person who was the source.
    9. The infection control device according to claim 9.
11. The input / output processing unit
    If it is found that the person is actually infected with an infectious substance, notify the person who notified the person again.
    The infection control device according to claim 10.
12. The input / output processing unit
    Sending a notification to the room based on the usage history of the room by the person,
    The infection control device according to claim 11.
13. The input / output processing unit of the infection control device is
    Displaying on the output device the area in which the infectious agent emitted by the person is presumed to be present, based on the position and movement of the person staying in the room.
    An infection control method for an infection control device.
14. Computer,
    An infection control program for functioning as an input / output processing unit that displays on an output device an area in which an infectious substance emitted by the person is presumed to exist, based on the position and operation of the person staying in the room.

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