Space Monitoring System

Abstract

The present invention is characterized by comprising: an environment measurement means that measures a gaseous environment of a monitored space S; a human measurement means that measures the presence of humans in the monitored space S; a spatial situation calculation means that calculates whether a situation in which droplet infection of an infectious disease likely occurs exists or is expected from the gaseous environment data measured by the environment measurement means and the human data measured by the human measurement means; and a display means that, on the basis of the calculation result calculated by the spatial situation calculation means, displays a content prompting people to take actions for improving or preventing an indoor environment where the droplet infection of the infectious disease likely occurs.

Description

[Technical field]

[0001] The present invention relates to a space monitoring system that monitors and displays the status of an indoor monitoring space. [Background technology]

[0002] Conventionally, systems that monitor and display the status of indoor monitoring spaces have been proposed. For example, the vacancy management device and multi-purpose toilet of Patent Document 1 have a storage means for storing vacancy information of private rooms, a receiving means for receiving a door opening / closing detection signal indicating detection of opening or closing from an opening / closing detection means that detects the opening and closing of the entrance door of the private room, and a human presence detection signal indicating detection of human presence from a human presence detection means that detects human presence in the private room, and an updating means for updating the vacancy information, and when the human presence detection signal is received, the updating means updates the vacancy information to information indicating full occupancy, and when the door opening / closing detection signal is received, the vacancy information to information indicating vacancy. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-135486 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional systems that monitor and display the status of indoor monitoring spaces, such as that shown in Patent Document 1, are simply for monitoring and do not have a specific mechanism for encouraging certain actions, making it difficult to link them to the next action of the person.

[0005] The present invention has been made in consideration of the above circumstances, and aims to provide a spatial monitoring system that can monitor the situation in an indoor monitored space and then provide an opportunity to take action to prevent infectious diseases, such as refraining from entering the monitored space or ventilating the monitored space. [Means for solving the problem]

[0006] The space monitoring system according to claim 1 comprises: an environment measurement means for measuring the gaseous environment in the monitoring space; a human measurement means for measuring the presence of people in the monitoring space; a space situation calculation means for calculating whether the situation is prone to droplet infection of an infectious disease or is expected to become prone to droplet infection of an infectious disease based on the gaseous environment data measured by the environment measurement means and the human data measured by the human measurement means; and a display means for displaying content encouraging people to take action to improve the indoor environment prone to droplet infection of an infectious disease or to prevent the indoor environment from becoming prone to droplet infection, based on the calculation result calculated by the space situation calculation means, wherein the display means displays at least one of the shape of the monitoring space and the human data. A sign encouraging people to disperse The present invention is characterized by displaying the above in a three-dimensional manner.

[0007] The space monitoring system according to claim 2 is characterized in that the display means displays the environmental situation based on the human data or the gaseous environmental data on a floor plan of the monitored space.

[0009] Claim 3 The described space monitoring system is characterized in that the display means three-dimensionally displays at least one of the shape of the monitored space and the environmental condition based on the gaseous environmental data.

[0010] Claim 4 The described spatial monitoring system is characterized in that the display means displays, using letters, symbols and / or colors, messages encouraging people to take action to improve indoor environments prone to droplet infection of infectious diseases or to prevent indoor environments from becoming prone to such infections.

[0011] Claim 5 The described space monitoring system is characterized in that the gaseous environment of the monitoring space measured by the environmental measurement means is at least one of temperature, humidity, air pressure, carbon dioxide concentration, carbon monoxide concentration, oxygen concentration, volatile organic compound content, dust amount, pollen amount, and amount of fine particulate matter.

[0012] Claim 6 The described spatial monitoring system is characterized in that the spatial situation calculation means uses artificial intelligence to calculate whether or not a situation is prone to droplet infection of an infectious disease. Effect of the Invention

[0013] According to the present invention, it is possible to monitor the situation in an indoor monitoring space and provide an opportunity to take action to prevent infectious diseases, such as refraining from entering the monitoring space or ventilating the monitoring space. [Brief description of the drawings]

[0014] [Figure 1] 1 is a configuration diagram showing an example of the configuration of a space monitoring system according to the present invention. [Diagram 2] FIG. 2 is an explanatory diagram showing an example of data handled by the spatial monitoring system. [Diagram 3] FIG. 2 is an explanatory diagram showing an example of a stereoscopic display of the spatial monitoring system. [Figure 4] FIG. 13 is an explanatory diagram showing an example of the display of characters and the like in the three-dimensional display of the spatial monitoring system. [Diagram 5] FIG. 13 is an explanatory diagram showing an example of displaying characters and the like in the floor plan display of the spatial monitoring system. [Figure 6] FIG. 13 is an explanatory diagram showing an example of displaying numerical values ​​and the like in the floor plan display of the spatial monitoring system. [Figure 7] FIG. 13 is an explanatory diagram showing an example of a display of another space monitoring system. [Figure 8] FIG. 8 is an explanatory diagram showing a change in the display of the space monitoring system of FIG. 7. [Figure 9] FIG. 8 is an explanatory diagram showing a further change in the display of the space monitoring system of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, the embodiment of the present invention will be specifically described with reference to the drawings. FIG. 1 is a diagram showing an example of the configuration of a space monitoring system according to the present invention. FIG. 2 is an explanatory diagram showing an example of data handled by the space monitoring system. FIG. 3 is an explanatory diagram showing an example of a three-dimensional display of the space monitoring system. FIG. 4 is an explanatory diagram showing an example of display of characters, etc. in the three-dimensional display of the space monitoring system. FIG. 5 is an explanatory diagram showing an example of display of characters, etc. in the floor plan display of the space monitoring system. FIG. 6 is an explanatory diagram showing an example of display of numerical values, etc. in the floor plan display of the space monitoring system. FIG. 7 is an explanatory diagram showing an example of display of another space monitoring system. FIG. 8 is an explanatory diagram showing a change in the display of the space monitoring system of FIG. 7. FIG. 9 is an explanatory diagram showing a further change in the display of the space monitoring system of FIG. 7.

[0016] The space monitoring system 1 according to the present invention is a device that monitors and displays the status of an indoor monitoring space S. As shown in Fig. 1 etc., the space monitoring system 1 is configured with, as hardware components, a control device 60 configured with a computer, an air quality sensor 20, a human presence sensor 10, a display device 50, etc.

[0017] The control device 60 is for realizing the function of the space monitoring system 1 which collectively bundles various means (hardware and software) described later. The display device 50 also serves as a monitor in the control device 60 and functions as a display means which is an element for realizing the function of the space monitoring system 1 described later. The display device 50, a sensor data collection device 62, an API server 70, a DB (database) server 72, a WEB server 74, a human presence sensor 10, an air quality sensor 20, etc. are connected to the control device 60, either within the control device 60 or connected thereto. The connection with the control device 60 may be in any form, but may be, for example, a connection via a LAN line 64 (LAN connection) (however, the LAN connection is not limited to a wired one and may be wireless).

[0018] In addition, the entire spatial monitoring system 1, the WEB server 74, and the API server 70 will be connected to the outside of the system via a telecommunications line, but this external connection may be wired (e.g., a metal line, an optical line, etc.) or wireless, and is not limited by the type of communication connection line.

[0019] In FIG. 1, person Y is also shown as being electrically connected, but this indicates that a mobile information terminal such as a smartphone is connected to the system via a wired or wireless line, and the person carrying the mobile information terminal is connected as if directly to the space monitoring system 1. Also, by connecting the mobile information terminal carried by person Y to the space monitoring system 1, the mobile information terminal can function as a display device 50. Methods for the mobile information terminal to function as the display device 50 include, for example, making the functions of the space monitoring system 1 available from the outside as a function of the API server 70, making it possible to connect by browsing via the WEB server 74, connecting directly via a LAN connection so that the control device 60 is connected like a monitor, etc.

[0020] The air quality sensor 20 is an environmental measurement means that measures the gaseous environment in the monitoring space S with one or more sensors, and measures gaseous environmental data. The air quality sensor 20 is configured as an assembly of, for example, a temperature distribution sensor 22, an illuminance sensor 24, a carbon dioxide concentration sensor (CO2 sensor) 26, a carbon monoxide concentration sensor (CO sensor) 28, an oxygen concentration sensor (O2 sensor) 30, a TVOC (TOTAL VOLATILE ORGANIC COMPOUNDS) sensor 32, a humidity sensor 34, and an air pressure sensor 36, but in reality, some of these sensors physically function as a single sensor.

[0021] In addition, the temperature distribution sensor 22 measures the temperature distribution in the area measurable by the sensor, the illuminance sensor 24 measures the illuminance in the area measurable by the sensor, the carbon dioxide concentration sensor (CO2 sensor) 26 measures the carbon dioxide concentration in the air in the area measurable by the sensor, the carbon monoxide concentration sensor (CO sensor) 28 measures the carbon monoxide concentration in the air in the area measurable by the sensor, the oxygen concentration sensor (O2 sensor) 30 measures the oxygen concentration in the air in the area measurable by the sensor, the TVOC sensor 32 measures the total volatile organic compound concentration in the air in the area measurable by the sensor and measures the pollution concentration levels of various volatile organic compounds (VOCs), the humidity sensor 34 measures the humidity in the air in the area measurable by the sensor, and the air pressure sensor 36 measures the air pressure in the area measurable by the sensor.

[0022] In addition, the environmental measurement means may measure at least one of the following: temperature, humidity, atmospheric pressure, carbon dioxide concentration, carbon monoxide concentration, oxygen concentration, and volatile organic compound content, as well as the amount of dust, pollen, and amount of fine particulate matter (e.g., the amount of PM2.5).

[0023] The human presence sensor 10 is a human presence measurement means for measuring the presence of a human Y in the monitoring space S, and measures human data such as whether a person is present / not present (human presence / absence) and counting the number of people within a range that the human presence sensor 10 can measure. Note that, in terms of hardware, the human presence sensor 10 is assumed to be an infrared sensor, a semiconductor laser (LiDAR sensor), or the like, but is not limited by this form.

[0024] The data handled by the sensor data collection device 62, as shown in FIG. 2, includes gaseous environment data 68 such as temperature, illuminance, carbon dioxide concentration, carbon monoxide concentration, oxygen concentration, amount of volatile organic compounds, amount of dust, amount of pollen, humidity, and air pressure, and human data such as presence / absence of people, headcount, etc., and the measured data is collected and stored.

[0025] Next, the arrangement of various means in an actual monitoring space S will be explained with reference to the drawings. The monitoring space S shown in Fig. 3 etc. is, for example, a hall-like space, an indoor space where unspecified people enter and exit and circulate, and the space monitoring system 1 monitors the situation in this monitoring space S. The monitoring space S itself can be used for any purpose, and can be used for a variety of purposes, such as a restaurant.

[0026] Since the monitoring space S has a certain size, in this embodiment, the monitoring space S is divided into six sections (sections S1 to S6) for measurement, understanding, and display. Note that it is optional whether or not to divide one monitoring space for measurement, understanding, and display, and the present invention is not limited by whether or not it is divided.

[0027] At least one control device 60 is provided in the monitoring space S. The control device 60 is connected to other devices provided in the monitoring space S via a LAN line 64 (the same is true for the other devices). Each device is connected to the outside of the monitoring space S via a public network or the like via a telecommunication line (Internet line) as necessary. In the example of FIG. 3, the sensor data collection device 62 is integrated with the control device 60. As for the display device 50, instead of providing a separate monitor, a mobile information terminal carried by the person Y is used as the display device 50. That is, the display screens DS1 to DS4 shown in FIGS. 3 to 6 are displayed on the mobile information terminal.

[0028] A human presence sensor 10 is provided on the ceiling of each of the sections S1 to S6 of the monitoring space S. In addition, an air quality sensor 20 is provided on the wall surface of each of the sections S1 to S6.

[0029] The operation of the space monitoring system 1 configured as above will be described. As a basic operation of the space monitoring system 1, first, the control device 60, as a space situation calculation means, calculates whether the situation is prone to droplet infection of an infectious disease or is expected to become prone to droplet infection of an infectious disease based on gaseous environmental data measured by the air quality sensor 20, which is an environmental measurement means, and human data measured by the human presence sensor 10, which is a human measurement means. An infectious disease is particularly a case in which infection occurs or is likely to occur due to the scattering of human droplets, and is assumed to include novel coronavirus disease (COVID-19) and acute influenza virus infection, but is not limited to these viral infectious diseases.

[0030] Next, based on the calculation results calculated by the control device 60, which is a spatial situation calculation means, the display device 50 displays information encouraging people to take action to improve the indoor environment in which droplet infection of infectious diseases is likely to occur or to take preventive measures to prevent the indoor environment from becoming one in which droplet infection is likely to occur.

[0031] The specific calculations in the spatial situation calculation means are calculated, for example, based on the relationship between the humidity and temperature in the air and the number of people Y in the monitoring space S, whether the carbon dioxide concentration in the air is high and ventilation is required, the degree of crowding of people Y, such as an extremely large number of people Y, etc. Specific calculations in the spatial situation calculation means include calculation of the crowding of people Y based on human data, understanding of the environmental situation based on gaseous environmental data, etc., and the display of this human data and environmental situation can also be a display of content that encourages people to take action to improve the indoor environment in which droplet infection of infectious diseases is likely to occur or to prevent the indoor environment from becoming one in which droplet infection is likely to occur.

[0032] In addition, the contents displayed on the display device 50 to encourage people to take preventive measures to improve indoor environments prone to droplet infection of infectious diseases or to prevent indoor environments from becoming prone to such infection will be described with reference to Figs. 3 to 6.

[0033] The display screen DS1 shown in Fig. 3 is an example of a display displayed on the display device 50. The display screen DS1 in Fig. 3 is a three-dimensional display by the display device 50 of the shape of the monitoring space S and the crowding situation (human data) of people Y1, Y2. Not only the shape of the monitoring space S, but also the people Y1, Y2 are arranged so as to appear three-dimensional. The people Y1, Y2 on this display screen DS1 do not appear three-dimensional at first glance, but it is also possible to express them as completely three-dimensional patterns.

[0034] Moreover, the display device 50 displays the monitoring space S three-dimensionally based on the actual floor plan, so that it is displayed as if it were on a floor plan. The floor plan may be drawn by a line drawing, a photograph, or a graphic, and is not limited by its form, and may be expressed two-dimensionally or three-dimensionally. The display device 50 can also display the monitoring space S from any viewing angle. By displaying each area of ​​the sections S1 to S6 in color, it is possible to objectively grasp how many people Y1 and Y2 are in each of the sections S1 to S6, and it is possible to visually check the density of the people Y1 and Y2, and it is possible to know whether the monitoring space S is an indoor environment where droplet infection of infectious diseases is likely to occur. As a result, the display screen DS1 encourages people to take action to improve the indoor environment where droplet infection of infectious diseases is likely to occur, or to prevent the indoor environment from becoming one where droplet infection is likely to occur.

[0035] On the display screen DS1 of Figure 3, for example, the density of people Y1 and Y2 can be expressed not only by directly displaying people Y1 and Y2, but also by changing the colors painted on the floor surfaces of sections S1 to S6, and is not limited by the form of expression.

[0036] Incidentally, displaying the shape of the monitoring space S allows the user to visualize the air flow and people's movements in the monitoring space S, and in combination with the gaseous environmental data, the environmental condition is displayed three-dimensionally. Note that the display of the environmental condition is not limited to a three-dimensional display, and may be a two-dimensional display.

[0037] Next, a display screen DS2, which is an example of a display displayed on the display device 50 shown in Fig. 4, will be described. As with the display screen DS1, the display screen DS2 is a three-dimensional display of the shape of the monitoring space S and the crowding state of people (people data) by the display device 50. Note that the display of the crowding state of people (people data) is not limited to a three-dimensional display, and may be a two-dimensional display.

[0038] Display screen DS2, in addition to the three-dimensional display on display screen DS1, uses letters and colors (shades in the figure) to encourage people to take action to improve indoor environments that are prone to droplet infection of infectious diseases or to take preventative measures to prevent indoor environments from becoming prone to such infections.

[0039] Specifically, the color (shade in the figure) of the floor surface of each of sections S1 to S5 is changed depending on the status of section S1 to S6 to indicate the degree of crowding. The color of the floor surface may indicate not only the specific degree of crowding but also the quality of the gaseous environment. Section S6 is displayed darkly as an unlit area to indirectly indicate that people are not crowded. As a result, the display device 50 displays information that encourages people to take action to improve the indoor environment that is prone to droplet infection of infectious diseases or to prevent the indoor environment from becoming one that is prone to infection.

[0040] In addition to the three-dimensional display, the display screen DS2 displays displays (displays D21, D22, D23, D24) encouraging people to take action to improve indoor environments prone to droplet infection of infectious diseases or to take preventative measures to prevent indoor environments from becoming prone to droplet infection, using text and a different color (shading in the figure) for the background where the text is displayed. Note that the displays encouraging people to take action may be symbols or patterns, and are not limited by the display format. In other words, the display screen DS2 is an example in which three-dimensional display and two-dimensional display are used together.

[0041] Next, a description will be given of a display screen DS3, which is an example of a display displayed on the display device 50 shown in Fig. 5. The display screen DS3 is a floor plan display of the shape of the monitoring space S and the crowding situation of people on the display device 50.

[0042] The display screen DS3 uses characters and colors (shading in the figure) to display information (Display D31, Display D32, Display D33, Display D34, Display D35, Display D36) that encourage people to take action to improve indoor environments prone to droplet infection of infectious diseases or to take preventative measures to prevent indoor environments from becoming prone to infection. The content is expressed in characters and the characters and the background of the area where the characters are displayed are displayed in different colors (shading in the figure). Note that the display encouraging people to take action may use symbols or patterns and is not limited by the display format.

[0043] Next, a description will be given of a display screen DS4, which is an example of a display displayed on the display device 50 shown in Fig. 6. The display screen DS4 is a floor plan display of the shape of the monitoring space S and the crowding situation of people on the display device 50.

[0044] Display screen DS4 uses letters and colors (shades of light and dark in the figure) to show messages (Display D41, Display D42, Display D43, Display D44, Display D45, Display D46) that encourage people to take action to improve indoor environments that are prone to droplet infection of infectious diseases or to take preventative measures to prevent indoor environments from becoming prone to such infections.The messages are displayed in letters as numerical values ​​of gaseous environmental data, and the letters and the background where the letters are displayed are displayed in different colors (shades of light and dark in the figure).

[0045] The colors of the sections and people on each display screen (including shades) may be changed according to changes in the situation in the monitoring space S in order to encourage people to take preventive measures to improve the indoor environment in which droplet infection of infectious diseases is likely to occur or to prevent the indoor environment from becoming one in which droplet infection is likely to occur. For example, the residence time of people Y1 and Y2 is also measured, and the people are displayed in different colors according to the length of their residence time.

[0046] Furthermore, the spatial situation calculation means of the spatial monitoring system 1 can also use artificial intelligence to calculate whether or not a situation is prone to droplet infection of an infectious disease. Specifically, based on big data and data measured by the air quality sensor 20, etc., the artificial intelligence can create, select, etc. a display that encourages people to take appropriate actions to improve the indoor environment in which droplet infection of an infectious disease is likely to occur or to prevent the indoor environment from becoming prone to droplet infection, and display this on the display device 50.

[0047] Furthermore, a method of calculating and displaying heat maps is also available as a display that encourages people to take action to improve indoor environments that are prone to droplet infection of infectious diseases or to prevent indoor environments from becoming prone to such infections. A heat map is a method of visualizing the strength of matrix-type numerical data with colors in order to visualize data, and visualizes the magnitude of numerical values ​​related to the degree of human congestion (human data) and environmental conditions with light and dark colors, like the temperature distribution shown by thermography.

[0048] Specifically, the display screen DS5 shown in Figs. 7 to 9 displays the crowding of people (environmental conditions, such as carbon dioxide concentration) in a heat map format. The monitoring space S50 is an indoor space in which an office desk 40, a sofa 42, and a chair 44 are placed. The display screen DS5 shown in Fig. 7 does not display any content that encourages people to take action to improve the indoor environment in which droplet infection of infectious diseases is likely to occur or to prevent the indoor environment from becoming prone to infection. The displays D51 to D54 in Figs. 8 and 9 show that people are in the displayed area or moving around the area, and are displays that encourage people to take action to improve the indoor environment in which droplet infection of infectious diseases is likely to occur or to prevent the indoor environment from becoming prone to infection. The extent and shading of the displays D51 to D54 indicate the degree to which droplet infection of infectious diseases is likely to occur.

[0049] From the state in Fig. 7, for example, when a person enters this monitoring space S50 and starts to move, displays D51 to D53 shown in different shades of color as shown in Fig. 8 will be displayed. If the number of people increases further or people's movements in the monitoring space S50 become more active, the display area of ​​displays D51 to D53 will expand and a new display D54 will be displayed as shown in Fig. 9.

[0050] Looking at the display screen DS5 more specifically, in the state shown in Fig. 8, for example, the displays D51-D53 around the office desk 40 and sofa 42 are small in size and the degree of crowding is not high. However, in the state shown in Fig. 9, the display D54 appears on the chair 44 in addition to the office desk 40 and sofa 42, and the displays D51-D53 are also wider, creating a state in which the degree of urging people to take action to improve the indoor environment in which droplet infection of infectious diseases is likely to occur or to take preventative measures to prevent the indoor environment from becoming one in which droplet infection of infectious diseases is likely to occur can be seen as being strong. In this way, the displays D51-D54 are displays that indicate the content of urging people to take action to improve the indoor environment in which droplet infection of infectious diseases is likely to occur or to take preventative measures to prevent the indoor environment from becoming one in which droplet infection of infectious diseases is likely to occur.

[0051] According to the spatial monitoring system 1 described above, it is possible to monitor the situation in the monitoring space S, S50 and provide an opportunity to take action to prevent infectious diseases, such as refraining from entering the monitoring space S, S50 or ventilating the monitoring space S, S50.

[0052] Although the spatial monitoring system 1 of the present invention is configured as an infectious disease countermeasure, it is not limited to the purpose of preventing the spread of infectious diseases, and can also be used for purposes other than infectious disease countermeasures, such as encouraging people to avoid crowds from a disaster prevention perspective.

[0053] This application is based on Japanese Patent Application No. 2021-022975 filed on February 17, 2021. The entire specification, claims, and drawings of Japanese Patent Application No. 2021-022975 are incorporated herein by reference.

[0054] The present invention allows various embodiments and modifications without departing from the broad spirit and scope of the present invention. The above-described embodiments are for the purpose of explaining the present invention and do not limit the scope of the present invention. That is, the scope of the present invention is indicated by the claims, not the embodiments. Various modifications made within the scope of the claims and within the scope of the meaning of the invention equivalent thereto are considered to be within the scope of the present invention. [Industrial Applicability]

[0055] As described above, according to the present invention, a spatial monitoring system can be provided that can monitor the situation in an indoor monitoring space and then provide an opportunity to take action to prevent infectious diseases, such as refraining from entering the monitoring space or ventilating the monitoring space. [Explanation of symbols]

[0056] 1. Spatial monitoring system 10. Human presence sensor 20. Air quality sensor 22 Temperature distribution sensor 24...Illuminance sensor 26 Carbon dioxide concentration sensor 28 Carbon monoxide concentration sensor 30...Oxygen concentration sensor 32 TVOC sensor 34 Humidity sensor 36...Barometric pressure sensor 40...office desk 42. Sofa 44 Chair 50...Display device 60...Control device 62 Sensor data collection device 64...LAN line 68 Gaseous Environmental Data 70...API server 72...DB Server 74...WEB Server

Claims

1. In a space monitoring system that monitors and displays the status of an indoor monitoring space, An environment measuring means for measuring the gaseous environment of the monitoring space; A presence detection means for detecting the presence of people in the monitoring space; a spatial situation calculation means for calculating whether a situation is prone to droplet infection of an infectious disease or is expected to be prone to droplet infection of the infectious disease based on the gaseous environmental data measured by the environment measurement means and the human data measured by the human measurement means; and display means for displaying information encouraging people to take action to improve the indoor environment in which droplet infection of the infectious disease is likely to occur or to prevent the indoor environment from becoming prone to such infection, based on the results of the calculation by the spatial situation calculation means; The display means three-dimensionally displays an indication encouraging the dispersion of the people as at least one of the shape of the monitoring space and the person data.

2. 2. The space monitoring system according to claim 1, wherein the display means displays the environmental condition based on the human data or the gaseous environmental data on a floor plan of the monitored space.

3. 3. The space monitoring system according to claim 1, wherein said display means three-dimensionally displays at least one of the shape of said monitoring space and the environmental condition based on said gaseous environmental data.

4. The spatial monitoring system of any one of claims 1 to 3, characterized in that the display means displays, in letters, symbols and / or colors, a message encouraging people to take action to improve indoor environments prone to droplet infection of the infectious disease or to prevent indoor environments from becoming prone to such infection.

5. A space monitoring system as described in any one of claims 1 to 4, characterized in that the gaseous environment of the monitoring space measured by the environmental measurement means is at least one of temperature, humidity, air pressure, carbon dioxide concentration, carbon monoxide concentration, oxygen concentration, volatile organic compound content, dust amount, pollen amount, and amount of fine particulate matter.

6. A spatial monitoring system as described in any one of claims 1 to 5, characterized in that the spatial situation calculation means uses artificial intelligence to calculate whether or not the situation is prone to droplet infection of the infectious disease.

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