Open door selection system and open door selection method

Abstract

To provide an open door selection system and an open door selection method that select an open door capable of minimizing as possible, an influence on a temperature in a facility while performing ventilation, when CO2 concentration in the facility rises.SOLUTION: A server 40 collects and stores door opening / closing data indicating opening / closing operations of automatic doors A to D. A server 50 receives the door opening / closing data collected by the server 40 from the server 40 at regular intervals, and tallies up an open time of each automatic door A to D for each time zone. When a high-concentration point where CO2 concentration exceeds a threshold is detected, the server 50 temporarily selects a plurality of doors among the automatic doors A to D, which are relatively close to the high-concentration point, and selects, among the temporarily selected doors, a door that has been opened for the longest time in a time zone including the time when the high-concentration point is detected as an open door.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to an open door selection system and an open door selection method, and in particular to an open door selection system and an open door selection method that selects an open door to be opened from among a plurality of doors installed at a plurality of entrances and exits of a facility based on the environment within the facility, regardless of whether people are entering or exiting. [Background technology]

[0002] Japanese Patent Laid-Open Publication No. 11-336425 (Patent Document 1) discloses an entrance opening / closing management system that automatically and accurately records and monitors the opening / closing status of entrances to warehouses, buildings, etc., and further enables a remote location to grasp the opening / closing status in real time. In this management system, the opening / closing status of each door and / or shutter installed at the entrance is detected and collected, and the collected data is transmitted to an opening / closing monitoring means for recording and display. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-336425 Summary of the Invention [Problem to be solved by the invention]

[0004] In commercial facilities and the like, when the carbon dioxide (CO2) concentration inside the facility increases, some doors may be left open to ventilate the facility regardless of whether people are entering or leaving. However, when a door is opened, outside air flows into the facility, which may have a significant effect on the temperature inside the facility depending on which door is opened. In order to maintain comfort inside the facility, it is desirable to ventilate the facility while minimizing the effect on the temperature inside the facility as much as possible. Patent Document 1 does not particularly mention such a problem.

[0005] The present disclosure has been made to achieve this objective, and the purpose of the present disclosure is to provide an open door selection system and an open door selection method for selecting an open door that can ventilate while minimizing the impact on the temperature within a facility when the CO2 concentration within the facility increases. [Means for solving the problem]

[0006] The open door selection system of the present disclosure is an open door selection system that selects an open door to be opened regardless of whether people enter or exit from among a plurality of doors installed at a plurality of entrances of a facility based on the environment within the facility, and includes a detection means for detecting a high concentration point in the facility where the CO2 concentration is higher than a threshold, a processor, and a memory for storing a program executed by the processor. When a high concentration point is detected by the detection means, the processor selects an open door based on distance information between the high concentration point and the installation location of each door according to the program.

[0007] In addition, the open door selection method disclosed herein is a method for selecting an open door to be opened from among a plurality of doors installed at each of a plurality of entrances and exits of a facility based on the environment within the facility, regardless of whether people are entering or exiting, and includes a step of detecting a high concentration point within the facility where the CO2 concentration is higher than a threshold value, and when a high concentration point is detected, selecting an open door based on distance information between the high concentration point and the installation location of each door.

[0008] In the above-mentioned open door selection system and open door selection method, when a high concentration point is detected in a facility, an open door is selected based on the distance information between the high concentration point and the installation location of each door. This makes it possible to select an open door that can effectively ventilate while minimizing the effect of opening the door on the temperature inside the facility as much as possible, taking into account the distance between the high concentration point and each door.

[0009] For example, among a plurality of doors installed in the facility, the door closest to the high concentration point may be selected as the open door. Alternatively, at least one door relatively close to the high concentration point may be provisionally selected from the plurality of doors, and from among them, a door that is expected to be open for a long time based on past opening and closing data during the time period including the time when the high concentration point was detected may be selected as the open door. Effect of the Invention

[0010] According to the open door selection system and open door selection method disclosed herein, when the CO2 concentration within a facility increases, it is possible to select an open door that can ventilate while minimizing the impact on the temperature within the facility. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram showing an example of a floor of a facility to which an open door selection system according to a first embodiment is applied. [Diagram 2] FIG. 2 shows an example of a configuration of an open door selection system according to the first embodiment. [Diagram 3] FIG. 4 is a diagram illustrating an example of a data structure of a door opening / closing database. [Figure 4] FIG. 13 is a diagram illustrating an example of a data structure of a door opening time database. [Diagram 5] 13 is a flowchart illustrating an example of a door opening / closing data collection process. [Figure 6] 13 is a flowchart showing an example of a door open time tallying process. [Figure 7] 13 is a flowchart showing an example of an open door selection process. [Figure 8] 13 is a flowchart showing an example of an open door selection process in the second embodiment. [Figure 9] 13 is a flowchart showing an example of an open door selection process in the third embodiment. [Figure 10] 13 is a flowchart showing an example of an open door selection process in a modified example. [Figure 11]FIG. 13 shows an example of a configuration of an open door selection system according to a fourth embodiment. [Figure 12] 13 is a flowchart showing an example of an open door selection process in the fourth embodiment. [Figure 13] FIG. 13 shows an example of the configuration of an open door selection system according to a fifth embodiment. [Figure 14] 13 is a flowchart showing an example of an open door selection process in the fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the drawings. Although several embodiments will be described below, it is planned from the beginning of the application that the configurations described in each embodiment will be appropriately combined. Note that the same or corresponding parts in the drawings are given the same reference numerals, and the description thereof will not be repeated.

[0013] [Embodiment 1] Fig. 1 is a diagram showing an example of a floor of a facility to which an open door selection system according to the first embodiment of the present disclosure is applied. With reference to Fig. 1, the facility is a commercial facility such as a shopping mall, and a first floor having a plurality of entrances is shown. In this example, four entrances 12, 14, 16, and 18 are provided.

[0014] Entrances 12, 14, 16, and 18 are provided with automatic doors A, B, C, and D, respectively. Each of the automatic doors A to D is normally configured to automatically open when a door sensor (not shown) installed at each entrance detects a person entering or leaving the building, and to automatically close when no person entering or leaving the building is detected for a predetermined period of time. Each of the automatic doors A to D is also configured to be manually opened and closed (maintained in an open or closed state) by the facility manager.

[0015] The manager carries the terminal device 20 and the CO2 sensor 22, and travels around the facility to measure the CO2 concentration in the facility using the CO2 sensor 22. Instead of the manager, a mobile robot (e.g., a surveillance robot or a cleaning robot) that travels around the facility may be equipped with the terminal device 20 and the CO2 sensor 22. The terminal device 20 and the CO2 sensor 22 may be integrally configured.

[0016] The manager patrols the facility as needed, measures the CO2 concentration using the CO2 sensor 22, and inputs the measured value into the terminal device 20. The terminal device 20 is capable of communicating with a beacon or the like (not shown) installed in the facility, and is capable of identifying the location of the terminal device 20 within the facility. When the measured value of the CO2 concentration is input into the terminal device 20, the input measured value is associated with the location information of the terminal device 20 at the time of input, thereby making it possible to identify the CO2 concentration at the point where the measured value of the CO2 sensor 22 was input into the terminal device 20.

[0017] In this facility, when an increase in CO2 concentration is detected by the CO2 sensor 22 in the facility, some of the automatic doors A to D are opened to ventilate the facility regardless of whether people are entering or exiting (hereinafter, automatic doors that are opened in this manner are referred to as "open doors"). Since ventilation fans are generally installed in various places in the facility, opening the automatic doors installed at the entrances and exits allows outside air to flow into the facility, thereby ventilating the facility. However, opening the doors allows outside air to flow into the facility, which may affect the temperature inside the facility. It is desirable for the open doors to be doors that are effective in reducing the CO2 concentration and that can suppress temperature changes inside the facility as much as possible compared to normal times (when the doors are not opened for ventilation).

[0018] Therefore, this disclosure discloses an open door selection system that, when a point (hereinafter referred to as a "high concentration point") is detected where the CO2 concentration measured by the CO2 sensor 22 is higher than a threshold value, selects an open door that can effectively ventilate the facility while minimizing the impact on temperature changes within the facility.

[0019] In the open door selection system according to the first embodiment, when a high concentration point is detected within a facility, several automatic doors relatively close to the high concentration point are provisionally selected. Then, from among the provisionally selected automatic doors, the automatic door that has been open for the longest time in the recent period (e.g., the last few days) during the time period when the high concentration was detected is selected as the open door. As a result, an automatic door relatively close to the high concentration point is selected as the open door, so that ventilation within the facility can be effectively performed. Furthermore, an automatic door that has been open for the longest time during the time period when the high concentration was detected is selected as the open door, so that the effect of temperature changes within the facility due to the opening of the door can be minimized. The open door selection system that realizes this will be described in detail below.

[0020] Fig. 2 is a diagram showing an example of the configuration of the open door selection system according to the embodiment 1. With reference to Fig. 2, the open door selection system 10 includes door sensors 32-38, servers 40 and 50, a terminal device 20, and a CO2 sensor 22. Note that the servers 40 and 50 may be configured as a single server.

[0021] Door sensors 32-38 are installed at entrances 12, 14, 16, and 18 (FIG. 1), respectively. Door sensor 32 detects the opening and closing of automatic door A at entrance 12, and door sensor 34 detects the opening and closing of automatic door B at entrance 14. Door sensor 36 detects the opening and closing of automatic door C at entrance 16, and door sensor 38 detects the opening and closing of automatic door D at entrance 18. Each of the door sensors 32-38 outputs door opening and closing data indicating the detection result of the opening and closing of the corresponding automatic door to the server 40.

[0022] The server 40 receives and accumulates door opening / closing data indicating the opening / closing operation of the automatic doors A-D from the door sensors 32-38, respectively, and manages the opening / closing status of the automatic doors A-D. The server 40 includes a CPU (Central Processing Unit) 42, a memory 44, an interface (I / F) device 46, and a door opening / closing database (DB) 48. The memory 44 includes a RAM (Random Access Memory) and a ROM (Read Only Memory). The CPU 42 loads a program stored in the ROM into the RAM and executes it. Various processes to be executed by the server 40 are written in the program stored in the ROM.

[0023] The I / F device 46 constitutes an input unit for receiving door opening / closing data from the door sensors 32 to 38. When the server 40 receives the door opening / closing data from the door sensors 32 to 38 via the I / F device 46, the server 40 stores in the door opening / closing DB 48 the detection result of the opening / closing operation of the automatic door indicated in the received door opening / closing data in association with the reception time of the door opening / closing data.

[0024] FIG. 3 is a diagram showing an example of the data structure of the door opening / closing DB 48. Referring to FIG. 3, "time" indicates the time when the door opening / closing data was received. "Door" indicates the automatic door that transmitted the door opening / closing data. "Status" indicates the detection result of the opening / closing operation of the automatic door indicated in the received door opening / closing data. The door opening / closing DB 48 stores in chronological order the automatic door that transmitted the door opening / closing data and the detection result of the opening / closing operation of the automatic door indicated in the door opening / closing data, in association with the time when the door opening / closing data was received. For example, the data in the first line indicates that automatic door A was opened at time 10:00:00.

[0025] In addition, instead of detecting the time when the door opening / closing data was received by the server 40, the time when the door opening / closing operation was detected on the door sensor side may be transmitted to the server 40 together with the detection result of the door opening / closing operation.

[0026] 2 again, the server 40 transmits data stored in the door opening / closing DB 48 to the server 50 at fixed times. For example, the fixed times may be every hour starting at 0 minutes past the hour, or every 30 minutes starting at 0 minutes past the hour and 30 minutes past the hour. The data transmitted to the server 50 is data newly accumulated after the previous transmission, and data already transmitted to the server 50 may be appropriately deleted after a predetermined time.

[0027] The server 50 receives data showing the opening and closing operations of the automatic doors A to D in chronological order from the server 40 at regular intervals, and tally up the open time of each of the automatic doors A to D. Specifically, when the server 50 receives the above data at regular intervals from the server 40, it tally up the open time of each of the automatic doors A to D during the time period that includes the received data.

[0028] The server 50 is also configured to be able to communicate with the terminal device 20, and receives from the terminal device 20 the measured value of the CO2 concentration measured by the CO2 sensor 22 and input to the terminal device 20. If the CO2 concentration received from the terminal device 20 exceeds a threshold value, the server 50 executes a process (open door selection process) for selecting an automatic door that is effective in reducing the CO2 concentration at the high concentration point. The specific process of the server 50 will be described in detail later.

[0029] The server 50 includes a CPU 52, a memory 54, a communication device 56, and a door open time DB 58. The memory 54 includes a RAM and a ROM. The CPU 52 loads a program stored in the ROM into the RAM and executes it. Various processes to be executed by the server 50 are described in the program stored in the ROM.

[0030] The communication device 56 is an input / output device for exchanging various data with the terminal device 20 and the server 40 using a known wireless communication method. When the server 50 receives the timed data indicating the opening and closing operations of the automatic doors A-D from the server 40, the server 50 tallies up the opening times of the automatic doors A-D during the time period that includes the received data, and stores the total in the door opening time DB 58.

[0031] Fig. 4 is a diagram showing an example of the data structure of the door open time DB 58. Referring to Fig. 4, "time period" indicates a time period during which the open time of each of the automatic doors A to D is tallied based on data received from the server 40 at regular intervals. "Door" indicates an automatic door whose open time is tallied during a corresponding time period. "Average open time" indicates the past average time that the corresponding automatic door was open during a corresponding time period (open time). This average open time is calculated based on data received from the server 40 at regular intervals, and is, for example, a moving average of the open time during the same time period during the most recent specified period (for example, the most recent few days).

[0032] For example, to explain the data on the first line in more detail, when the opening and closing data of each door in the 10 o'clock hour of a certain day is sent from server 40 to server 50, the open time of automatic door A in the 10 o'clock hour is tallied. The open time of each of automatic doors A-D in each time period is tallied every day, and a moving average for a predetermined period of time in the past (e.g. several days) is calculated from the currently tallied data on the open time of automatic door A in the 10 o'clock hour and the same data from the past, and this is saved in door open time DB 58 as the average open time of automatic door A in the 10 o'clock hour.

[0033] 2 again, when the CO2 concentration received from the terminal device 20 exceeds the threshold, the server 50 executes the process of selecting the door to be opened using the data of the door open time DB 58. Specifically, when a point where the CO2 concentration exceeds the threshold (high concentration point) is detected, the server 50 provisionally selects multiple automatic doors (e.g., two or three) that are relatively close to the high concentration point. Then, the server 50 refers to the door open time DB 58 and selects, as the door to be opened, the automatic door with the longest average open time among the provisionally selected doors during the time period when the high concentration point was detected.

[0034] For example, if a high concentration point is detected in the 11:00s, the server 50 provisionally selects an automatic door (e.g., automatic doors A, C, D) that is relatively close to the high concentration point. The server 50 then refers to the door open time DB 58 and selects automatic door A, which has the longest average open time in the 11:00s, as the open door from among the provisionally selected automatic doors A, C, and D. Since automatic door A is originally open for a long time in the 11:00s, selecting automatic door A as the open door can most effectively suppress the impact on temperature changes within the facility. Furthermore, since automatic door A is also a door relatively close to the high concentration point, ventilation can be effectively performed to reduce the CO2 concentration at the high concentration point.

[0035] In the above example, three automatic doors are tentatively selected, but the number of tentatively selected doors may be two, or may be determined appropriately depending on the number of automatic doors. In the above example, one open door is selected, but the top two doors with the longest average open time may be selected as the open doors. In the above example, automatic doors A and B may be selected as the open doors.

[0036] The specific flow of each process executed in the server 40 and the server 50 will be described in detail below.

[0037] 5 is a flowchart showing an example of a door opening / closing data collection process executed in the server 40. This flowchart starts when door opening / closing data indicating the detection result of the opening / closing operation of the automatic door is received from any of the door sensors 32 to 38.

[0038] 5, when the server 40 receives door opening / closing data from any of the door sensors 32 to 38, the server 40 stores the received door opening / closing data in the door opening / closing DB 48 (FIG. 3) in association with the reception time of the data (step S10). Every time the server 40 receives door opening / closing data from the door sensors 32 to 38, the server 40 stores the received door opening / closing data in the door opening / closing DB 48 in association with the reception time of the data.

[0039] Then, the server 40 transmits the data accumulated in the door opening / closing DB 48 to the server 50 at regular intervals (step S20). For example, at 0 minutes past the hour, the server 40 transmits to the server 50 all the data accumulated in the door opening / closing DB 48 during the previous time period in a lump sum. As an example, at 11:00 a.m., the server 40 transmits to the server 50 all the data accumulated in the door opening / closing DB 48 during the immediately preceding 10:00 a.m. time period in a lump sum.

[0040] In the above, data is transmitted at the 0 minute of every hour, but data may be transmitted at other times. Furthermore, the fixed time is not limited to every hour, and may be, for example, every 30 minutes.

[0041] 6 is a flowchart showing an example of a door open time counting process executed by the server 50. This flowchart starts when data of the door open / close DB 48 is received from the server 40 at regular intervals.

[0042] Referring to FIG. 6, when server 50 receives data of door opening / closing DB48 from server 40, server 50 counts up the door opening time during the collection time period of each received data for each door, and calculates the average value (moving average) of the door opening time during that time period for the past N days (e.g., several days to one week) (step S110).

[0043] For example, when server 50 receives door opening / closing data for each door accumulated in door opening / closing DB 48 in the 10 o'clock hour from server 40 at 11:00 a.m., server 50 tallies the opening times of automatic door A in the 10 o'clock hour and calculates the moving average of the door opening times for automatic door A in the 10 o'clock hour for the past N days. Server 50 similarly calculates the moving averages of the door opening times for the other automatic doors B to D in the 10 o'clock hour for the past N days.

[0044] Then, the server 50 stores the average opening time of each of the automatic doors A to D during that time period (10:00 in the above example) in the door opening time DB 58 (FIG. 4) (step S120).

[0045] In the above, the moving average of the door opening time for the last N days is calculated for each door. However, if an increase in CO2 concentration within the facility is observed on specific days (e.g., holidays and public holidays), it is also possible to calculate the moving average of the door opening time for each door on holidays and public holidays for the last N days.

[0046] 7 is a flowchart showing an example of an open door selection process executed in the server 50. This flowchart starts when data on the CO2 concentration measured by the CO2 sensor 22 is received from the terminal device 20.

[0047] 7, when the server 50 receives the measurement data of the CO2 concentration from the terminal device 20, it determines whether the measured CO2 concentration is higher than a threshold value (step S210). This threshold value is appropriately set as a CO2 concentration level at which ventilation in the facility is required. As described above, the server 50 also acquires the position of the terminal device 20 when the measurement data of the CO2 concentration is input to the terminal device 20.

[0048] When it is determined in step S210 that the CO2 concentration is equal to or lower than the threshold value (NO in step S210), the process proceeds to RETURN without executing the subsequent series of processes.

[0049] If it is determined in step S210 that the CO2 concentration is higher than the threshold value (YES in step S210), the server 50 provisionally selects, from among the automatic doors A to D, a plurality of doors in order of proximity to the position (high concentration point) of the terminal device 20 (step S220).

[0050] The distance from the position of the terminal device 20 (high concentration point) to the door may be the straight-line distance from the terminal device 20 or the distance along the corridor. In addition, if the upper and lower floors of the facility have an open-ceiling structure and automatic doors are installed on the floors directly above and below, the automatic doors on the upper and lower floors may also be included as candidates for tentative selection based on the straight-line distance to those automatic doors.

[0051] Next, the server 50 searches the door open time DB 58 for the average open time during the time period including the time when the measurement data of the CO2 concentration was input to the terminal device 20 for each provisionally selected door, and selects the automatic door with the longest average open time as the "open door" (step S230). Note that the selected open door is not limited to one, and may be multiple doors (e.g., two) with the longest average open times.

[0052] In addition, the facility manager can move to the location where the automatic door is installed and manually open the door selected as the opening door. Although there is no specific explanation about the time for which the door is opened, it may be a predetermined specified time, or it may be opened until the manager measures the CO2 concentration again at the high concentration point and confirms that it is below the specified value.

[0053] As described above, in this first embodiment, when a high concentration point is detected in a facility, a plurality of doors relatively close to the high concentration point are provisionally selected from among the automatic doors A to D. Then, of the provisionally selected doors, the door that has been open for the longest period of time in the time period including the time when the high concentration point was detected is selected as the opening door. Therefore, according to this first embodiment, it is possible to effectively ventilate the facility while minimizing the effect of opening the doors on the temperature inside the facility.

[0054] In addition, in this embodiment 1, the average door open time for the past N days in each time period is tallied, and the door with the longest average open time is selected as the open door. This allows the past operation status (open time status) of the automatic doors A to D to be reflected more accurately, and the effect of opening the doors on the temperature inside the facility can be effectively suppressed while effectively ventilating the facility.

[0055] [Embodiment 2] In embodiment 1, when a high concentration point is detected within a facility, several automatic doors that are relatively close to the high concentration point are tentatively selected, and among the tentatively selected automatic doors, the automatic door that has been open for the longest time in the recent period (e.g., the last few days) during the time period when the high concentration was detected is selected as the open door.

[0056] In the second embodiment, when a high concentration point is detected within the facility, the automatic door closest to the high concentration point is selected as the door to be opened.

[0057] The configuration of the open door selection system according to the second embodiment is the same as the open door selection system 10 according to the first embodiment shown in Fig. 2. Also in the second embodiment, as in the first embodiment, the door opening / closing data collection process (Fig. 5) is executed in the server 40, and the door opening time tallying process (Fig. 6) is executed in the server 50.

[0058] Fig. 8 is a flowchart showing an example of an open door selection process executed in the server 50 of the embodiment 2. This flowchart corresponds to the flowchart of Fig. 7 in the embodiment 1. This flowchart also starts when data on the CO2 concentration measured by the CO2 sensor 22 is received from the terminal device 20.

[0059] 8, when the server 50 receives the measurement data of the CO2 concentration from the terminal device 20, it judges whether or not the measured CO2 concentration is higher than the threshold value (step S310). If it is judged that the CO2 concentration is higher than the threshold value (YES in step S310), the server 50 selects, from among the automatic doors A to D, the automatic door that is closest to the position of the terminal device 20 (high concentration point) as the "open door" (step S320).

[0060] According to the second embodiment, ventilation can be performed more effectively.

[0061] [Embodiment 3] The method of selecting the door to be opened when a high concentration point is detected in the facility may be determined based on the size of the automatic door. In the third embodiment, similar to the first embodiment, when a high concentration point is detected in the facility, several automatic doors relatively close to the high concentration point are provisionally selected. In the third embodiment, the largest of the provisionally selected automatic doors is selected as the door to be opened, with a priority given to the reduction in CO2 concentration in the facility and the effect on the temperature due to opening the door.

[0062] The overall configuration of the open door selection system according to the third embodiment is the same as that of the open door selection system 10 according to the first embodiment shown in Fig. 2. Also in the third embodiment, as in the first embodiment, the door opening / closing data collection process (Fig. 5) is executed in the server 40, and the door opening time tallying process (Fig. 6) is executed in the server 50.

[0063] Fig. 9 is a flowchart showing an example of an open door selection process executed in the server 50 of the embodiment 3. This flowchart also corresponds to the flowchart of Fig. 7 in the embodiment 1. This flowchart also starts when data on the CO2 concentration measured by the CO2 sensor 22 is received from the terminal device 20.

[0064] 9, steps S410 and S420 are the same as steps S210 and S220, respectively, in the flowchart of Fig. 7 in embodiment 1. Then, when a plurality of automatic doors are provisionally selected in step S420, the server 50 selects the largest door among the provisionally selected automatic doors as the "opening door" (step S430).

[0065] As described above, in the third embodiment, the largest door among the provisionally selected doors is selected as the opening door, giving priority to the effect on the temperature and the decrease in the CO2 concentration in the facility caused by opening the door. This makes it possible to effectively reduce the CO2 concentration in the facility.

[0066] [Variations] In the third embodiment, the largest of the provisionally selected automatic doors is selected as the opening door, with the reduction in CO2 concentration in the facility and the impact on temperature being given priority; however, the smallest of the provisionally selected automatic doors may also be selected as the opening door, with the latter being given priority.

[0067] 10 is a flowchart showing an example of an open door selection process executed in the modified server 50. This flowchart includes step S440 instead of step S430 in the flowchart of FIG.

[0068] That is, when a plurality of automatic doors are provisionally selected in step S420, the server 50 selects the smallest door among the provisionally selected automatic doors as the "opening door" (step S440).

[0069] In this modification, the smallest door among the provisionally selected doors is selected as the opening door, prioritizing the effect on the temperature inside the facility and the decrease in the CO2 concentration inside the facility caused by opening the door. This makes it possible to minimize the effect on the temperature inside the facility caused by opening the door.

[0070] [Embodiment 4] In each of the above embodiments, a facility manager patrols the facility as needed to measure the CO2 concentration using the CO2 sensor 22 and inputs the measured value into the terminal device 20. If the measured CO2 concentration is higher than the threshold value, the door to be opened is selected based on the distance information between the point where the measurement was performed (high concentration point) and the automatic door.

[0071] In the fourth embodiment, a plurality of CO2 sensors are appropriately installed in advance in a facility. When any of the CO2 sensors measures a CO2 concentration that exceeds a threshold value, the door to be opened is selected based on the distance information between the installation location of the CO2 sensor and the automatic door.

[0072] Fig. 11 is a diagram showing an example of a configuration of an open door selection system according to embodiment 4. With reference to Fig. 11, open door selection system 10A includes door sensors 32 to 38, servers 40 and 50A, and CO2 sensors 22-1 to 22-5.

[0073] The CO2 sensors 22-1 to 22-5 are installed in advance at appropriate intervals in the facility to measure the CO2 concentration. In this example, five CO2 sensors are installed, but the number of installed CO2 sensors is not limited to this.

[0074] The server 50A receives the measured values ​​of the CO2 concentration from each of the CO2 sensors 22-1 to 22-5. When the measured CO2 concentration exceeds a threshold, the server 50A executes an open door selection process to select an automatic door that is effective in reducing the CO2 concentration at the installation position (high concentration point) of the CO2 sensor that measured the CO2 concentration.

[0075] In the fourth embodiment, similarly to the first embodiment, the server 40 executes the door opening / closing data collection process (FIG. 5), and the server 50A executes the door opening time compilation process (FIG. 6).

[0076] Fig. 12 is a flowchart showing an example of an open door selection process executed in the server 50A of the embodiment 4. This flowchart corresponds to the flowchart of Fig. 7 in the embodiment 1. This flowchart is repeatedly executed at a predetermined cycle.

[0077] 12, the server 50A receives the measurement data of the CO2 concentration from each of the CO2 sensors 22-1 to 22-5 (step S510). The server 50A also acquires the reception time of the measurement data from each of the CO2 sensors 22-1 to 22-5.

[0078] Then, the server 50A determines whether or not there is a CO2 sensor whose CO2 concentration is higher than the threshold based on the received measurement data (step S520). If there is no CO2 sensor whose CO2 concentration is higher than the threshold (NO in step S520), the subsequent series of processes are not executed and the process proceeds to RETURN.

[0079] When it is determined in step S520 that there is a CO2 sensor whose CO2 concentration is higher than the threshold value (YES in step S520), the server 50A provisionally selects, from among the automatic doors A to D, a plurality of doors in order of proximity to the installation position (high concentration point) of the CO2 sensor (step S530).

[0080] Then, the server 50A searches the door open time DB 58 for the average open time during the time period including the measurement time of the high concentration CO2 (the time when the measurement data of the CO2 concentration was received) for each provisionally selected door, and selects the automatic door with the longest average open time as the "open door" (step S540). Note that the selected open door is not limited to one, and may be multiple doors (e.g., two) with the longest average open times.

[0081] According to the fourth embodiment, since the CO2 sensors are appropriately installed in advance within the facility, the facility manager does not need to go around the facility to measure the CO2 concentration.

[0082] [Embodiment 5] In each of the above embodiments, an automatic door selected as an opening door is opened by a facility manager going to the location where the automatic door is installed and manually opening the door, but it is also possible to output a door opening command from the server to the automatic door (opening door) to open the door automatically.

[0083] Fig. 13 is a diagram showing an example of a configuration of an open door selection system according to embodiment 5. With reference to Fig. 13, the open door selection system 10B includes door sensors 32-38, servers 40, 50B, a terminal device 20, a CO2 sensor 22, and a door system 70.

[0084] The door system 70 includes automatic doors A to D. Each of the automatic doors A to D is configured to be able to open and close according to a command from the server 50B, regardless of the detection result of the corresponding door sensor.

[0085] When the server 50B selects an open door through the open door selection process in the same manner as the above-mentioned server 50, it outputs a door open command to open the automatic door selected as the open door to the door system 70. Then, in the door system 70, the automatic door selected as the open door is kept in a constantly open state in accordance with the open command from the server 50B.

[0086] Fig. 14 is a flowchart showing an example of an open door selection process executed in the server 50B of the embodiment 5. This flowchart corresponds to the flowchart of Fig. 7 in the embodiment 1. This flowchart also starts when data on the CO2 concentration measured by the CO2 sensor 22 is received from the terminal device 20.

[0087] 14, steps S610 to S630 are the same as steps S210 to S230, respectively, in the flowchart of Fig. 7 in embodiment 1. Then, when an opening door is selected in step S630, server 50B outputs a door opening command to the automatic door selected as the opening door (step S640).

[0088] In the above, the door open command is output from the server 50B to the door system 70. However, the door open command may be output from the server 40 that manages the opening and closing operations of the automatic doors A to D to the door system 70.

[0089] In addition, in the above, an example has been described in which a door open command is further output to a selected open door for embodiment 1, but in the other embodiments as well, a door open command may be similarly output to a selected open door.

[0090] According to the fifth embodiment, it is possible to eliminate the need for the facility manager to manually open the selected opening door.

[0091] [Note] The above-described embodiments are specific examples of the following supplementary notes.

[0092] (Appendix 1) The open door selection system is an open door selection system that selects an open door to be opened regardless of whether a person is entering or exiting from among a plurality of doors installed at a plurality of entrances and exits of the facility based on an environment within the facility, A detection means for detecting a high concentration point where the CO2 concentration is higher than a threshold value within the facility; A processor; a memory for storing a program to be executed by the processor; The processor, according to the program, When the high concentration point is detected by the detection means, the door to be opened is selected based on distance information between the high concentration point and each of the installation locations of the plurality of doors.

[0093] (Appendix 2) In the open door selection system of Appendix 1, When the high concentration point is detected by the detection means, the processor selects, from among the plurality of doors, the door that is closest to the high concentration point as the door to be opened.

[0094] (Appendix 3) In the open door selection system of Appendix 1, The processor collects the opening times of the plurality of doors for each predetermined time period, When the high concentration point is detected by the detection means, the processor tentatively selecting at least one door from the plurality of doors that is relatively close to the high concentration point; Among the at least one provisionally selected door, the door that has the longest open time during the specified time period including the time when the high concentration point is detected is selected as the open door.

[0095] In the above-mentioned open door selection system, when a high concentration point is detected in the facility, an open door is selected based on the distance information between the high concentration point and the installation location of each door. This makes it possible to select an open door that can effectively ventilate while minimizing the impact of opening the door on the temperature inside the facility, taking into account the distance between the high concentration point and each door.

[0096] (Appendix 4) In the open door selection system of Appendix 3, The processor counts, for each of the predetermined time periods, an average value of the open times for a predetermined number of days in the time period as the open time.

[0097] This makes it possible to more accurately reflect past door operation conditions (opening times) and effectively reduce the impact of opening the doors on the temperature within the facility while providing effective ventilation.

[0098] (Appendix 5) In the open door selection system of Appendix 1, When the high concentration point is detected by the detection means, the processor tentatively selecting at least one door from the plurality of doors that is relatively close to the high concentration point; The opening door is selected from the provisionally selected at least one door based on a size of each of the provisionally selected at least one door.

[0099] (Appendix 6) In the open door selection system of Appendix 5, The processor selects the largest door from the tentatively selected at least one door as the open door.

[0100] In this system, the largest door among the tentatively selected doors is selected as the door to be opened, prioritizing the effect on temperature and the reduction in CO2 concentration in the facility by opening the door. This effectively reduces the CO2 concentration in the facility.

[0101] (Appendix 7) In the open door selection system of Appendix 5, The processor selects the smallest door from the tentatively selected at least one door as the open door.

[0102] In this system, the smallest door among the tentatively selected doors is selected as the door to be opened, prioritizing the effect on the temperature and the decrease in CO2 concentration inside the facility caused by opening the door. This makes it possible to minimize the effect on the temperature inside the facility caused by opening the door.

[0103] (Appendix 8) In the open door selection system according to any one of claims 1 to 7, The processor outputs a door open command to the selected opening door so that the opening door is in an open state.

[0104] This eliminates the need for the facility manager to manually open the selected opening door.

[0105] (Appendix 9) In the open door selection system according to any one of claims 1 to 8, The processor selects the door to open based on a straight-line distance between the high concentration point and each of the locations of the plurality of doors.

[0106] (Appendix 10) In the open door selection system according to any one of claims 1 to 8, The processor selects the door to open based on the distance of the shortest path from the high concentration point to the installation location of each of the plurality of doors.

[0107] (Appendix 11) In the open door selection system according to any one of claims 1 to 10, The detection means includes a CO2 concentration sensor carried by a staff member who patrols the facility, The high concentration point is detected based on the detection value of the CO2 concentration sensor.

[0108] This allows high concentration points to be detected more accurately and ventilation to be carried out promptly.

[0109] (Appendix 12) In the open door selection system according to any one of claims 1 to 10, The detection means includes a plurality of CO2 concentration sensors installed within the facility.

[0110] This eliminates the need for facility managers to patrol the facility and measure CO2 concentrations.

[0111] (Appendix 13) The open door selection method is a method for selecting an open door to be opened regardless of whether a person is entering or exiting from among a plurality of doors installed at a plurality of entrances and exits of a facility, based on an environment within the facility, Detecting a high concentration point in the facility where the CO2 concentration is higher than a threshold value; The method includes a step of selecting the door to be opened based on distance information between the high concentration point and each of the installation locations of the plurality of doors when the high concentration point is detected.

[0112] In this method for selecting an open door, when a high concentration point is detected in a facility, an open door is selected based on the distance information between the high concentration point and the installation location of each door. This makes it possible to select a door that can effectively ventilate while minimizing the effect of opening the door on the temperature inside the facility, taking into account the distance between the high concentration point and the open door.

[0113] The embodiments disclosed herein are also intended to be combined as appropriate within the scope of technical inconsistency. The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The technical scope of the present disclosure is defined by the claims, not the description of the above embodiments, and is intended to include all modifications within the scope and meaning equivalent to the claims. [Explanation of symbols]

[0114] 10, 10A, 10B door opening selection system, 12 to 18 entrance / exit, 20 terminal device, 22, 22-1 to 22-5 CO2 sensor, 32 to 38 door sensor, 40, 50, 50A, 50B server, 42, 52 CPU, 44, 54 memory, 46 I / F device, 48 door opening / closing DB, 56 communication device, 58 door opening time DB, 70 door system, A to D automatic door.

Claims

1. An open door selection system that selects an open door to be opened regardless of whether a person is entering or exiting from among a plurality of doors installed at a plurality of entrances of the facility based on an environment within the facility, A detection means for detecting a high concentration point where the carbon dioxide concentration is higher than a threshold value within the facility; A processor; a memory for storing a program to be executed by the processor; The processor, according to the program, an open door selection system that, when the high concentration point is detected by the detection means, selects the open door based on distance information between the high concentration point and each of the installation locations of the plurality of doors.

2. 2. The open door selection system according to claim 1, wherein when the high concentration point is detected by the detection means, the processor selects, as the open door, a door among the plurality of doors that is closest to the high concentration point.

3. The processor collects the opening times of the plurality of doors for each predetermined time period, When the high concentration point is detected by the detection means, the processor tentatively selecting at least one door from the plurality of doors that is relatively close to the high concentration point; The open door selection system according to claim 1 , wherein, from among the at least one provisionally selected door, the door that has the longest open time during the specified time period including the time when the high concentration point is detected is selected as the open door.

4. The open door selection system according to claim 3 , wherein the processor counts, for each of the predetermined time periods, an average value of the open times for a predetermined number of days in the past during the time period as the open time.

5. When the high concentration point is detected by the detection means, the processor tentatively selecting at least one door from the plurality of doors that is relatively close to the high concentration point; The open door selection system according to claim 1 , wherein the open door is selected from the provisionally selected at least one door based on a size of each of the provisionally selected at least one door.

6. The open door selection system according to claim 5 , wherein the processor selects a largest door from among the at least one tentatively selected door as the open door.

7. The open door selection system according to claim 5 , wherein the processor selects a smallest door from among the at least one tentatively selected door as the open door.

8. The open door selection system according to claim 1 , wherein the processor outputs a door open command to the selected open door so that the selected open door is in an open state.

9. The open door selection system according to claim 1 , wherein the processor selects the open door based on a straight-line distance between the high concentration point and each of the installation locations of the plurality of doors.

10. The open door selection system according to claim 1 , wherein the processor selects the open door based on the distance of the shortest path from the high concentration point to an installation location of each of the plurality of doors.

11. The detection means includes a carbon dioxide concentration sensor carried by a staff member who patrols the facility, The open door selection system according to claim 1 , wherein the high concentration point is detected based on a detection value of the carbon dioxide concentration sensor.

12. The open door selection system according to claim 1 , wherein the detection means includes a plurality of carbon dioxide concentration sensors installed within the facility.

13. A method for selecting an open door to be opened regardless of whether a person is entering or exiting from among a plurality of doors installed at a plurality of entrances of a facility, based on an environment within the facility, comprising: Detecting a high concentration point in the facility where the carbon dioxide concentration is higher than a threshold value; An open door selection method comprising: when the high concentration point is detected, selecting the open door based on distance information between the high concentration point and each installation location of the plurality of doors.

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