Method for displaying evacuation information, system for displaying evacuation information, and program

Abstract

To provide an evacuation information display method, evacuation information display system, and program capable of transmitting an evacuation place after persons escaping from a building leaves the building.SOLUTION: In an evacuation information display method, a management server 10 acquires emergency information indicating an announcement of an evacuation instruction, and a projector 40 displays an image of evacuation information on the evacuation after leaving an exit of a building based on the acquired emergency information.SELECTED DRAWING: Figure 15

Description

Technical Field

[0001] The present invention relates to an evacuation information display method, an evacuation information display system, and a program.

Background Art

[0002] Conventionally, a technology for transmitting evacuation instructions to people in a building using information processing technology is known. Patent Document 1 describes this type of technology.

[0003] Patent Document 1 describes that a server specifies an evacuation exit closest to the current position of a mobile terminal that has transmitted movement information, specifies the degree of congestion near the specified evacuation exit based on the movement speed included in the received movement information, and specifies the degree of congestion for each of a plurality of evacuation routes set in the building.

Prior Art Literature

Patent Literature

[0004]

Patent Literature 1

Summary of the Invention

Problem to be Solved by the Invention

[0005] By the way, depending on the disaster, after exiting a building, it is necessary to head to the evacuation site specified for each area. However, it is not uncommon for people to not know the evacuation site after exiting the building. There have also been risks that people may feel relieved after exiting the building and fail to proceed to the next evacuation site, or people's movement may stagnate near the exit of the building.

[0006] An object of the present invention is to provide an evacuation information display method, an evacuation information display system, and a program that can inform people evacuating from a building of the evacuation site after they exit the building.

Means for Solving the Problem

[0007] To achieve the above objective, one aspect of the present invention provides an evacuation information display method in which an information processing device acquires emergency information indicating the issuance of an evacuation order, and based on the emergency information, displays an evacuation direction display indicating the direction of evacuation to an evacuation destination and evacuation destination information indicating information about the evacuation destination on a display device installed around the exit, and the display device displays the evacuation direction display The exterior of the aforementioned building and The information is displayed in a position close to the exit, and the evacuation destination information is located in a position based on the evacuation direction. building The display device is positioned away from the exit and is a projection device capable of projecting an image of the evacuation information. The information processing device acquires the image of the evacuation information based on the emergency information and the installation information of the display device. [Effects of the Invention]

[0008] According to the present invention, the method, system, and program for displaying evacuation information can be used to communicate to people evacuating from a building the location to which they should go after leaving the building. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic diagram showing the configuration of a projection system relating to one embodiment of the present invention. [Figure 2] This is a schematic diagram showing a projector installed around an emergency exit in a projection system according to one embodiment of the present invention. [Figure 3] This is a schematic diagram showing a projector set up inside a building in a projection system according to one embodiment of the present invention. [Figure 4] This is a schematic diagram showing an example of the installation location of an identification information reading device according to one embodiment of the present invention. [Figure 5] This is a block diagram showing the hardware configuration of a management server related to one embodiment of the present invention. [Figure 6] This is a block diagram showing the functional configuration of a management server according to one embodiment of the present invention, specifically a functional configuration diagram for performing evacuation information projection processing. [Figure 7]This is a schematic diagram illustrating a heat map related to one embodiment of the present invention. [Figure 8] Figure 7 shows the relationship between the color and density of the heatmap. [Figure 9] A block diagram showing the hardware configuration of a projector according to one embodiment of the present invention. [Figure 10] This is a block diagram showing the hardware configuration of an identification information reading device according to one embodiment of the present invention. [Figure 11] This is a block diagram showing the hardware configuration of an IC tag relating to one embodiment of the present invention. [Figure 12] This is a schematic diagram showing an example of an image related to evacuation shelters. [Figure 13] This is a schematic diagram showing an example of an image displaying information about evacuation locations for each company. [Figure 14] This is a schematic diagram showing an example of an image of information about evacuation shelters with more detailed information displayed. [Figure 15] This flowchart illustrates an example of the flow of evacuation information projection processing performed by a management server according to one embodiment of the present invention. [Figure 16] This flowchart illustrates an example of the flow of evacuation information projection processing performed by a projector according to one embodiment of the present invention. [Figure 17] Figure 7 is a schematic diagram showing an example of a heat map when all floors are combined. [Figure 18] This is a flowchart illustrating an example of the flow of the identification information reading process performed by an identification information reading device according to one embodiment of the present invention. [Figure 19] This flowchart illustrates an example of the flow of density-based evacuation information projection processing performed by a management server according to one embodiment of the present invention. [Figure 20] This is a schematic diagram illustrating an example of the flow of evacuation information projection processing performed by a projector according to one embodiment of the present invention. [Figure 21] This is a schematic diagram illustrating an example of the flow of density information update processing performed by a management server relating to one embodiment of the present invention. [Figure 22] It is a diagram showing an example of an image of evacuation information to the exit of a building and evacuation information after exiting the building. [Figure 23] It is a flow chart illustrating an example of the flow of evacuation information projection processing executed by a projector according to another modified example that performs the processing shown in the flow charts of Fig. 15 and Fig. 16. Mode for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0011] <Projection System> First, an outline of a projection system S serving as the evacuation information display system of the present embodiment will be described with reference to Fig. 1. Note that the term "system" used in the present specification includes not only an overall apparatus configured by a plurality of devices, a plurality of means and the like, but also a system configured by a single independent apparatus. Fig. 1 is a schematic diagram showing the projection system S according to one embodiment of the present invention.

[0012] As shown in Fig. 1, the projection system S of the present embodiment includes a management server 10 serving as an information processing apparatus, a projector 40 serving as a display apparatus, an identification information reading apparatus 60, and an IC (Integrated Circuit) tag 70 serving as an information terminal owned by each user who is in the building.

[0013] When the management server 10 acquires emergency information, it executes projection control of the projector 40 based on the emergency information. The emergency information is the occurrence, forecast, or the like of a natural disaster or a man-made disaster. A natural disaster is, for example, occurrence information or prediction information of flood, sediment disaster, storm surge, earthquake, tsunami, inland water inundation, volcanic eruption, or the like. A man-made disaster is, for example, an environmental accident at a factory or the like, a fire, or the like. The emergency information may include not only information on the occurrence and forecast of a disaster, but also information such as the location and scale of the disaster.

[0014] The projector 40 is a projection device that displays information such as evacuation destinations and evacuation routes. Any projection device is preferable because it can be displayed on any location such as a wall or floor only when necessary. The display device is not limited to a projection device; it may also be other display devices such as a monitor that displays information such as evacuation destinations and evacuation routes. In this embodiment, the projector 40 is set up in multiple locations in the building. Some of the multiple projectors 40 are installed around the building's emergency exits, and some are installed inside the building.

[0015] The projectors 40 installed around emergency exit E will be described with reference to Figure 2. Figure 2 is a schematic diagram showing projectors installed around emergency exit E in a projection system S according to one embodiment of the present invention. As shown in Figure 2, some of the projectors 40 are placed near emergency exit E, which is a building exit provided in the building. These projectors 40 project evacuation information images 100 and evacuation direction indicators 110, etc., displaying evacuation information onto the floor or ground outside emergency exit E.

[0016] The projectors 40 installed inside the building will be described with reference to Figure 3. Figure 3 is a schematic diagram showing projectors 40 installed inside a building in a projection system S according to one embodiment of the present invention. As shown in Figure 3, some of the projectors 40 are also installed on the ceiling inside the building. These projectors 40 display images indicating evacuation routes on the floor. From the viewpoint of displaying evacuation routes, it is preferable to display images indicating evacuation routes on the floor of branching passage 200A and branching passage 200B, but the arrangement is not limited to this.

[0017] The identification information reader 60 communicates with the IC tag 70 held by the user to obtain user-specific identification information. The identification information reader 60 is located inside the building. Figure 4 is a schematic diagram showing an example of the installation location of the identification information reader 60 according to one embodiment of the present invention. As shown in Figure 4, the identification information reader 60 is installed on the ceiling inside the building. Similar to the projector 40 installed inside the building, it may also be installed in a branching path.

[0018] <Management Server> Next, an example configuration of the management server 10 will be described using Figure 5. Figure 5 is a schematic block diagram showing the hardware configuration of the management server 10 in this embodiment. The management server 10 is a general-purpose computer capable of performing various functions by installing various programs. However, it is not limited to this, and may also be a computer built into dedicated hardware. The management server 10 performs evacuation information projection processing as an evacuation information display method, which involves acquiring emergency information, determining the type of emergency from the acquired emergency information, and setting the image to be projected by the projector 40 based on the type of emergency and the information acquired from the projector 40 or identification information reading device 60.

[0019] As shown in Figure 5, the management server 10 comprises a processing unit 11, a storage unit 12, an input unit 13, a display unit 14, and a communication unit 15.

[0020] The processing unit 11 is comprised of a processor that performs various calculations and control processes necessary for the operation of the management server 10. The processor may be a CPU (Central Processing Unit), MPU (Micro Processing Unit), SoC (System on a Chip), DSP (Digital Signal Processor), GPU (Graphics Processing Unit), ASIC (Application Specific Integrated Circuit), PLD (Programmable Logic Device), or FPGA (Field-Programmable Gate Array), or a combination thereof. The processing unit 11 may also be a combination of these processors with hardware accelerators.

[0021] The storage unit 12 is composed of a main memory, which is composed of, for example, a non-volatile memory such as ROM or a volatile memory such as RAM, and an auxiliary storage device, which is composed of a magnetic disk, optical disk, magneto-optical disk, or semiconductor memory. The storage unit 12 stores various information such as a program for the evacuation information projection process and its settings, a building map, and image data of evacuation information for projection. In the projection system S according to this embodiment, the evacuation information includes information about the building's exit and information about evacuation after leaving the building from the exit. The image of the evacuation information will be described later.

[0022] The input unit 13 and the display unit 14 are user interfaces that are electrically connected to the input / output interface by wire or wireless means. The input unit 13 is composed of, for example, a touch panel or keys, and inputs various information according to the user's instructions and operations. The display unit 14 is composed of, for example, a display that shows images, and outputs images and sound.

[0023] The communication unit 15 is a device for communicating with the projector 40, the imaging unit 47 of the projector 40 (described later), and other devices (not shown) via a network including the Internet, using communication methods based on communication standards such as Bluetooth®, Wi-Fi®, and LTE®.

[0024] The management server 10 remotely controls the projector 40 and the imaging unit 47 of the projector 40 (described later) using wireless or wired communication. Communication between the projector 40 and the management server 10 is carried out, for example, via the internet, a LAN (Local Area Network), a mobile phone network, or a combination thereof. The communication unit 15 may be a device for short-range communication that does not use a network.

[0025] Next, the functions implemented by the processing unit 11 of the management server 10 will be described with reference to Figure 6. Figure 6 is a block diagram showing the functions implemented by the processing unit 11 of the management server 10 in this embodiment. As shown in Figure 6, the processing unit 11 in this embodiment includes a communication control unit (communication control function) 20, an input control unit (input control function) 21, a display control unit (display control function) 22, an emergency information acquisition unit (emergency information acquisition function) 23, an evacuation information selection unit (evacuation information selection function) 24, an evacuation information output unit (evacuation information output function) 25, an identification information acquisition unit (identification information acquisition function) 26, and a density information generation unit (density information control function) 27.

[0026] The communication control unit 20 performs processing for communicating with external devices via the communication unit 15. For example, the communication control unit 20 performs processing for sending and receiving various types of information with the projector 40 and the identification information reading device 60 via the communication unit 15.

[0027] The input control unit 21 executes a process to accept user operations on the input unit 13. For example, the input control unit 21 executes a process to accept an operation by the administrator of the projection system S to input emergency information to the input unit 13.

[0028] The display control unit 22 performs processing to display an image on the screen of the display unit 14. For example, the display control unit 22 performs processing to display the management screen of the projection system S on the screen of the display unit 14.

[0029] The emergency information acquisition unit 23 acquires emergency information input from an external source. Various methods can be used to acquire emergency information. For example, the communication control unit 20 may receive emergency information from an external information processing device, or the input control unit 21 may accept user input of emergency information.

[0030] The evacuation information selection unit 24 executes a process to select an image of evacuation information for projection stored in the storage unit 12, based on the emergency information acquisition unit 23.

[0031] For example, if the emergency information acquisition unit 23 determines from the emergency information acquired that the type of emergency is a tsunami, the evacuation information selection unit 24 selects an image of tsunami evacuation information from among the images of evacuation information stored in the memory unit 12.

[0032] As mentioned above, multiple projectors 40 are installed inside the building, and each projector 40 has an evacuation information image appropriate to its location. Therefore, each of the multiple projectors 40 is pre-configured with an evacuation information image appropriate to its installation location. Furthermore, evacuation information images may be prepared for each type of emergency.

[0033] Furthermore, the evacuation information selection unit 24 may also obtain information about the installation location of the projector 40, as described later, from the projector 40. Alternatively, the evacuation information selection unit 24 may select a projection image stored in the storage unit 12 and generate an evacuation information image based on the emergency information obtained by the emergency information acquisition unit 23 and the information about the installation location of the projector 40, as described later. In other words, in the evacuation information display method, the evacuation information selection unit 24 may obtain an evacuation information image based on the emergency information and the information about the installation location of the projector 40.

[0034] In this case, for example, the evacuation information selection unit 24 determines the type of emergency from the emergency information acquisition unit 23. If the evacuation information selection unit 24 determines that the type of emergency is a tsunami, it searches the storage unit 12 for images of evacuation information for tsunamis. The evacuation information selection unit 24 obtains installation location information from each projector 40. From the searched images of tsunami evacuation information, the evacuation information selection unit 24 selects an image associated with each projector 40 based on the installation location information of the projector 40, as described later, and generates an evacuation information image.

[0035] The evacuation information output unit 25 executes a process instructing the communication control unit 20 to transmit the image of the evacuation information selected by the evacuation information selection unit 24 to the projector 40. In this embodiment, the information transmitted differs depending on the location where the projector 40 is installed (location within the building).

[0036] The identification information acquisition unit 26 performs the process of acquiring user identification information transmitted from the identification information reading device 60 and captured image information captured by the projector 40's shooting unit 47. The identification information reading device 60 transmits the user identification information it has read and its unique ID (an ID previously assigned to the management server 10, or a MAC address) to the management server 10. The management server 10's storage unit 12 has pre-stored table information that associates the unique ID of the identification information reading device 60 with the installation location of the identification information reading device 60.

[0037] The density information generation unit 27 identifies, for example, the number of people on each floor of the building and the location of each person on each floor (the distribution of multiple people on a given floor) based on the acquired multiple identification pieces of information, the unique ID of the identification information reader 60 transmitted together with the identification pieces of information, and the table information. Then, the density information generation unit 27 obtains the density of people on each floor of the building from the identified information. For example, the density information generation unit 27 obtains the density of people in a place with a predetermined size or space (for example, a living room or a conference room) based on the identification information acquired by the identification information acquisition unit 26. The density may be represented by a heat map. A heat map is a diagram that colors a map of a building based on the density. For example, the density information generation unit 27 can generate a heat map like the one in Figure 7. Figure 7 is a schematic diagram illustrating a heat map according to one embodiment of the present invention.

[0038] In the example shown in Figure 7, the building consists of floor A (the first floor), floor B (the second floor), and floor C (the third floor). Floor A has a common area facility A10. Emergency exits E10 and E20 are provided on one side of floor A, and emergency exits E30 and E40 are provided on the other side. Additionally, there are two staircases ST on floor A that lead to floor B (the second floor).

[0039] Floor B has facilities B10, B20, B30, and B40 at each of its four corners. Between each facility is a common area, a passageway, facility B50, and each facility has two entrances facing facility B50. Facility B10 has two entrances B11. Facility B20 has two entrances B21. Facility B30 has two entrances B31. Facility B40 has two entrances B41.

[0040] Facilities B10 to B40 can be, for example, offices or commercial facilities such as restaurants. Additionally, floor B has two staircases (ST) leading to floor A on the first floor and two staircases (ST) leading to floor C on the third floor.

[0041] Facility C10 is located on one side of Floor C. Facility C20 is located on the other side of Floor C. Facility C30, a common passageway, is located between Facility C10 and Facility C20, and each facility has two entrances facing Facility C30. Facility C10 has two entrances C11. Facility C20 has two entrances C21.

[0042] In a building like the one described above, the density information generation unit 27 can create one or more heatmaps 200 at any location on each of the floors A, B, and C, based on the identification information of users on each floor read by the identification information reading devices 60, which are provided in multiple locations on each of the floors A, B, and C. The management server 10 can identify the location of a user who possesses an IC tag 70 by comparing the identification information of the IC tag 70 owned by the user transmitted from the identification information reading device 60 with the unique ID information of the identification information reading device 60 and the table information stored in the storage unit 12. In other words, the management server 10 can calculate the density of each facility on each floor and generate a heatmap by collecting identification information. Furthermore, the processing unit 11 of the management server 10 can identify areas in the building where people are densely concentrated based on the heatmaps 200. As shown in Figure 8, the color of the heatmap becomes darker as the density increases. Figure 8 is a diagram showing the relationship between the color of the heatmap in Figure 7 and the density.

[0043] The density information generation unit 27 may also generate a heat map 200 based on the captured image information captured by the shooting unit 47 of the projector 40.

[0044] <Projector> Next, the projector 40 will be described using Figure 9. Figure 9 is a schematic block diagram showing the hardware configuration of the projector 40 according to this embodiment. The projector 40 is a projection device capable of projecting images of guidance information. As shown in Figure 9, the projector 40 includes a processing unit 41, a storage unit 42, an input unit 43, an output unit 44, a communication unit 45, a projection unit 46, and a shooting unit 47. Note that components that are common or similar to those already described may be given the same name and their detailed explanation may be omitted.

[0045] The storage unit 42 is composed of a main memory, which is composed of, for example, a non-volatile memory such as ROM or a volatile memory such as RAM, and an auxiliary memory, which is composed of a magnetic disk, optical disk, magneto-optical disk, or semiconductor memory. The storage unit 12 stores various information such as a program for the evacuation information projection process and its settings, a building map, the installation location of the projector 40, and image data of the evacuation information to be projected.

[0046] Here, information about the installation location of the projector 40 is stored in the storage unit 12, corresponding to a building map such as the floor on which it is installed and its location within that floor. In the projection system S according to this embodiment, the management server 10 can identify the projection location from the information about the installation location of the projector 40 when processing evacuation information and project evacuation information appropriate to the projection location.

[0047] The input section 43 is a user interface connected to a wired electrical input / output interface. The input section 43 also has input terminals such as an HDMI® terminal, a D-sub 15-pin terminal, and an RCA® terminal for component video signals.

[0048] The output unit 44 is a user interface connected to a wired electrical input / output interface. The output unit 44 also has a speaker and can output audio from it. Furthermore, the output unit 44 has a stereo mini-jack terminal, etc.

[0049] The projection unit 46 is an optical device that projects image light onto a screen or the like. For example, the projection unit 46 is located inside the housing of the projector 40. The projector 40 also projects images of evacuation information according to commands from the processing unit 41.

[0050] The imaging unit 47 is a camera having an optical lens and an image sensor. The imaging unit 47 photographs the inside of a building and the people inside the building. The images captured by the imaging unit 47 may also be used to detect whether there are people within the imaging range of the imaging unit 47. For example, if the processing unit 41 finds that there are people in the image captured by the imaging unit 47, it can determine that there are people and project an image to show to those people onto the projection unit 46.

[0051] <Identification Information Reader> Next, the hardware configuration of the identification information reading device 60 will be explained using Figure 10. Figure 10 is a block diagram showing the hardware configuration of the identification information reading device 60 according to one embodiment of the present invention. The identification information reading device 60 is a device such as an IC tag reader that reads identification information from an information terminal such as an IC tag 70, which will be described later. For example, the identification information reading device 60 acquires identification information by performing shortwave data communication, such as in the HF band, with the IC tag, etc. Note that the data communication method is not limited to this. Note that for configurations that are common or similar to those already described, the same name may be used and detailed explanations may be omitted.

[0052] As shown in Figure 10, the identification information reading device 60 comprises a processing unit 61, a storage unit 62, an input unit 63, and a communication unit 64. The input unit 63 is a device capable of reading identification information from an IC tag 70 or the like via wireless communication such as RFID (Radio Frequency Identifier) ​​(registered trademark) of the communication unit 64. The storage unit 62 stores information related to a unique ID for identifying the identification information reading device 60 (for example, product serial number, MAC address, a unique number assigned by the management server 10, etc.).

[0053] <ICタグ> The IC tag 70 is a portable information terminal for the user. The IC tag 70 can also transmit identification information to the aforementioned identification information reader 60 via communication, thereby identifying the user carrying it. For example, the IC tag 70 transmits identification information to the identification information reader 60 via shortwave data communication, such as in the HF band. However, the data communication method is not limited to this. The hardware configuration of the IC tag 70 is described below with reference to Figure 11. Note that configurations common to or similar to those already described may be given the same name, and detailed explanations may be omitted.

[0054] As shown in Figure 11, the IC tag 70 comprises a processing unit 71, a storage unit 72, an input / output unit 73, and a communication unit 74. The storage unit 72 stores IC tag information, identification information, and the like.

[0055] The communication unit 74 includes an IC chip readable by RFID (registered trademark) wireless communication, and a device for communicating with external devices such as the identification information reader 60 via a network including the Internet, using a communication method based on a communication standard such as Wi-Fi (registered trademark).

[0056] <Projection process> Next, we will explain the evacuation information projection process according to this embodiment. First, returning to Figure 2, we will explain the projection process of the projector 40 installed at the emergency exit.

[0057] In the example shown in Figure 2, projectors 40 are installed near the doors of each emergency exit in the building. Each projector 40 projects an evacuation direction indicator 110 and an evacuation information image 100 onto the floor outside the building, in the direction of exiting the emergency exit, indicating the evacuation location after exiting the emergency exit. The evacuation direction indicator 110 is set to, for example, d=5m to ensure visibility and avoid congestion around the emergency exit E. The evacuation information image 100 displays an evacuation direction indicator 101, an evacuation location icon 102 indicating the evacuation location, and an evacuation location name indicator 103 indicating the name of the evacuation location. The projector 40 projects the image onto the floor near the emergency exit, preferably projecting it beyond the emergency exit rather than in front of the door on the inside of the building. This is to prevent congestion caused by people stopping to check the projected image while evacuating. The length d of the image in the guidance direction of the evacuation direction indicator 110 can be arbitrarily changed via the input or communication unit of the projector 40 or the management server 10. Furthermore, it is possible to set whether or not the evacuation direction indicator 110 is projected.

[0058] An example of an image related to evacuation shelters is the image of evacuation information shown in Figures 12-14. Since the evacuation shelter changes depending on the type of emergency, images for each type of emergency are pre-set. For example, for an earthquake, the shelter might be B Elementary School; for a fire, C Elementary School; and for a flood, D Park, which is on high ground.

[0059] The evacuation information image 120 shown in Figure 12 displays, from top to bottom, an evacuation direction indicator 121, an evacuation location icon 122, and an evacuation location name indicator 123. The evacuation direction indicator 121 displays an arrow indicating the direction to the evacuation location. The evacuation location icon 122 is set to an icon symbolizing the evacuation location. The evacuation location name indicator 123 displays the name of the evacuation location in both Japanese and English, but this is not limited to these and can be changed as appropriate.

[0060] The evacuation information image 130 shown in Figure 13 is an image of evacuation information used when guiding evacuees to two or more evacuation destinations. For example, this evacuation information image is used when multiple companies or other organizations are located in the same building and need to be separated into different evacuation destinations. In the evacuation information image 130, evacuation direction indicators 131 are displayed on the left and right at the top of the image, evacuation location icons 132 are displayed on the left and right below them, target person indicators 134 are displayed on the left and right below them, and evacuation location name indicators 133 are displayed on the left and right at the very bottom of the image. The evacuation direction indicators 131, evacuation location icons 132, and evacuation location name indicators 133 are the same as the evacuation direction indicators 121, evacuation location icons 122, and evacuation location name indicators 123, respectively, so their explanation is omitted.

[0061] The target person indicator 134 indicates the target of the evacuation direction indicator 131, evacuation location icon 132, and evacuation location name indicator 133 located on the same side in the left-right direction. For example, in the example in Figure 13, the target to evacuate to Park A on the left is AAA Corporation, and the target to evacuate to Elementary School B on the right is BBB Corporation.

[0062] The evacuation information image 140 shown in Figure 14 displays more detailed information than the evacuation information image 120 shown in Figure 12. The evacuation information image 140 displays, from top to bottom, the evacuation direction indicator 141, the name of the evacuation location 143, the address of the evacuation location 144, and the details of the evacuation location 145. The evacuation direction indicator 141 and the name of the evacuation location 143 are the same as the evacuation direction indicator 121 and the name of the evacuation location 123, respectively, so their explanations are omitted.

[0063] The evacuation shelter address display 144 shows the address of the evacuation shelter, making it clearer where the shelter is located. Therefore, even if the evacuation shelter is far from the building, people can rely more on the address to find their way to the shelter more reliably. The evacuation shelter detail display 145 displays detailed facility information of the evacuation shelter. For example, the evacuation shelter detail display 145 may display facility information such as the evacuation shelter's telephone number, website address, whether there is an elevator, the location of the evacuation space, whether there are tactile paving blocks, whether there are wheelchair access routes, whether there is a nursing room, and whether there are beds. Knowing the status of the evacuation shelter in advance through the evacuation shelter detail display 145 allows people to act more appropriately.

[0064] Furthermore, the display of evacuation locations is not limited to this; the distance from the exit to the evacuation location can be set as appropriate. In other words, in the evacuation information display method performed by projection system S, the image of the evacuation information includes at least one of the following: the name of the evacuation location, the direction from the building exit to the evacuation location, the distance to the evacuation location, and information about the facilities of the evacuation location.

[0065] As described above, the projection system S according to this embodiment does not simply show people exiting through the building's emergency exit E, but also considers what happens after they leave the building and projects images to guide them to designated evacuation sites in the area or to parks located some distance away from their current location. The projected evacuation information images may display only arrow marks indicating the direction of evacuation near the emergency exit, and project images of evacuation sites at a distance from the building, thereby reducing congestion such as people stopping to check the images near the emergency exit E.

[0066] Next, with reference to Figures 15 and 16, an example of the evacuation information projection process performed by the management server 10 of the projection system S according to this embodiment and the projector 40 installed near the emergency exit door will be described. Figure 15 is an example of a flowchart illustrating the flow of the evacuation information projection process performed by the management server 10 in this embodiment. Figure 16 is an example of a flowchart illustrating the flow of the evacuation information projection process performed by the projector 40 in this embodiment.

[0067] First, let's explain an example of the evacuation information projection process performed by the management server 10. The management server 10 starts the evacuation information projection process when its power is turned on. First, the processing unit 11 of the management server 10 checks whether emergency information has been input into the input unit 13 or whether the communication unit 15 has received the emergency information (step S10). If emergency information has been input into the input unit 13 or transmitted to the communication unit 15 (step S10: YES), the processing unit 11 selects an image of evacuation information that has been pre-stored in the storage unit 12 to be projected onto each projector 40 based on the acquired emergency information (step S11). In other words, the management server 10 acquires emergency information indicating the issuance of an evacuation order.

[0068] Next, the processing unit 11 executes the process of transmitting the selected evacuation information image to each projector 40 connected to the communication unit 15 (step S12). That is, the management server 10 performs the evacuation information transmission process, which is the process of projecting an image of evacuation information regarding evacuation after leaving the building using the projector 40, based on the acquired emergency information. The projector 40 that has acquired the evacuation information image transmitted by the evacuation information transmission process projects the image. Next, it checks whether or not the power has been turned off (step S13). If the power has not been turned off (step S13: NO), the processing unit 11 proceeds to step S10. On the other hand, if the power has been turned off (step S13: YES), the processing unit 11 terminates the process.

[0069] Next, an example of the evacuation information projection process by the projector 40 will be described. The projector 40 starts the evacuation information projection process when the power is turned on. First, the processing unit 41 of the projector 40 checks whether or not an image of the evacuation information has been sent from the management server 10 to the communication unit 45 (step S20). If an image of the evacuation information has been sent from the management server 10 to the communication unit 45 (step S20: YES), the processing unit 41 causes the projection unit 46 to project the received image of the evacuation information (step S21).

[0070] Next, the processing unit 41 checks whether a request to terminate projection has been input to the input unit 43 or transmitted to the communication unit 45 (step S22). If a request to terminate projection has been input to the input unit 43 or transmitted to the communication unit 45 (step S22: YES), the processing unit 41 checks whether a request to terminate the projection of the evacuation information image by the projection unit 46 and turn off the power of the projector 40 has been input to the input unit 43 or transmitted to the communication unit 45 (step S23).

[0071] If no request to turn off the power is input to the input unit 43 or transmitted to the communication unit 45 (step S23: NO), the processing unit 41 proceeds to step S20. On the other hand, if a request to turn off the power is input to the input unit 43 or transmitted to the communication unit 45 (step S23: YES), the processing unit 41 terminates the process.

[0072] Next, the projection process of the projector 40 installed inside the building will be explained with reference to Figure 17. Figure 17 is a schematic diagram showing an example of a heat map when the heat maps of all floors shown in Figure 7 are combined.

[0073] In the projection system S according to this embodiment, as shown in Figure 4, multiple identification information reading devices 60 are installed on the ceiling of each floor of the building, and the identification information of IC tags 70 held by users inside the building is acquired by the operation of the identification information reading devices 60. The management server 10 stores the location information of the identification information reading devices 60 inside the building in the storage unit 12, and can determine the location of the IC tag 70 containing the identification information inside the building from the location of the identification information reading device 60 that read the identification information inside the building.

[0074] Furthermore, the identification information reading device 60 may simply be installed near the entrance of each facility. For example, the identification information reading device 60 may be installed on a wall near an entrance or exit, and users can hold an information terminal such as an IC tag 70 over it to read their identification information. This allows for the calculation of the density within the facility and the generation of a heat map.

[0075] The identification information reading device 60 according to this embodiment may acquire the information read by the identification information reading device 60 at predetermined timings to create a heat map and generate an image of the evacuation route to be projected onto each projector. For example, the management server 10 constantly transmits the reading results of the IC tag 70 to the management server 10, and the management server 10 acquires information on the density of people in each facility on each floor of the building by aggregating and analyzing the data in real time.

[0076] The management server 10 obtains the density of each floor of the building shown in Figure 7, generates a heat map for each floor from the obtained density, and obtains a heat map of the entire building shown in Figure 17 by overlaying the heat maps of each floor.

[0077] In other words, the management server 10 obtains the density of overlapping areas in the vertical direction based on the density of each floor and the density of other areas that overlap vertically and on different floors. Note that if the building is a single-story building, the density of the first floor is used for the overlapping density.

[0078] In the example shown in Figure 17, facility C10 on floor C is provided with entrances C11a and C11b facing facility C30, which is a passageway, and projectors 40 are installed near each of them.

[0079] Furthermore, facility C20 on floor C is provided with entrances C21a and C21b facing facility C30, which is a passageway, and projectors 40 are installed near each of them. In addition, facility C30, which is a passageway, is provided with stairs ST2 and ST4 on the left side in the figure, and stairs ST1 and ST3 on the right side. In this embodiment, stairs ST1 and ST3 lead to one of the stairs ST that connects floor C and B, and stairs ST2 and ST4 lead to the other stairs ST that connects floor C and B.

[0080] Furthermore, the diagram shown in Figure 17 displays the heatmaps for each floor shown in Figure 7 overlaid on top of each other. For example, the heatmap 200 to the right of facility C10 in Figure 17 is a superimposed version of the heatmaps 200 for the left front side of facility A10, facility B20, and the front side of facility C10 shown in Figure 7.

[0081] Furthermore, the density obtained by the processing unit 11 of the management server 10 is not limited to each floor. For example, the processing unit 11 of the management server 10 may divide each floor into multiple areas and obtain the density for each area. In this case, the processing unit 11 may obtain the overlapping density in the vertical direction based on the density for each area and the density of other areas that are on different floors and overlap vertically. The processing unit 11 of the management server 10 may also set evacuation routes based on the obtained overlapping density.

[0082] In the projection system S according to this embodiment, when the communication unit 15 receives emergency information in the event of a disaster such as a fire or earthquake, the processing unit 11 of the management server 10 uses the heatmap as overlap density information to set evacuation route information. For example, the processing unit 11 sets the content of the evacuation routes to be displayed according to the positions of the multiple projectors 40 so that evacuations are dispersed based on the overlap density.

[0083] In other words, the processing unit 11 of the management server 10 selects stairs and emergency exits on the lowest floor A so that the density of people evacuating becomes more uniform along the movement path, based on the heat map described above, and selects images of evacuation information along the movement path.

[0084] In the example shown in Figure 17, on floor C, the density of the superimposed heatmap 200 is high near entrance / exit C11a, and decreases sequentially near entrance / exit C11b, entrance / exit C21a, and entrance / exit C21b. In such cases, the processing unit 11 of the management server 10 selects an evacuation route that results in a relatively sparse heatmap.

[0085] The processing unit 11 of the management server 10 considers the closest evacuation route from the entrance / exit. For example, since the staircase closest to entrance / exit C11b is staircase ST2, the processing unit 11 selects the evacuation direction indicator 161, which is an image of an arrow pointing towards staircase ST2, and the evacuation location icon 160, and projects the image of the evacuation information onto the projector 40 near entrance / exit 11b. The same procedure is followed for entrance / exit C21b.

[0086] However, when evacuating from entrance / exit C21a, the processing unit 11 of the management server 10 considers other stairs because the heatmap color at the end of staircase ST3, which is closest to entrance / exit C21a, is dark. The processing unit 11 also checks the heatmap color at the end of staircase ST4, which is the next closest staircase, because the heatmap color at the end of staircase ST1, which is the next closest staircase, is also dark. The processing unit 11 of the management server 10 selects staircase ST4 as the staircase to use for evacuation because the heatmap around staircase ST4 is relatively light. The processing unit 11 of the management server 10 also selects the evacuation direction indicator 161, which is an image of an arrow pointing towards staircase ST4, and the evacuation location icon 160, and projects the image of the evacuation information onto the projector 40 near entrance / exit C21a.

[0087] Furthermore, when evacuating from entrance / exit C11a, the processing unit 11 of the management server 10 considers other stairs because the heat map color beyond staircase ST1, which is closest to entrance / exit C11a, is dark. The processing unit 11 also checks the color of the heat map beyond staircase ST2, which is the next closest staircase, because the heat map beyond staircase ST3, which is the next closest staircase, is also dark. In this case, staircase ST2 is expected to be crowded as it is likely to be used by people evacuating from entrance / exit C11b, C21b, and C21a, so the processing unit 11 checks the color of the heat map beyond staircase ST4, which is the next closest staircase. The processing unit 11 also considers staircase ST4 to be crowded, similar to staircase ST2, but since there are no other stairs that are not expected to be crowded, it selects the closest staircase ST1 as the staircase to use.

[0088] Thus, the processing unit 11 sets the content of the evacuation routes to be displayed according to the positions of the multiple projectors 40 so that evacuations are distributed based on the density of overlap. In the projection system S according to this embodiment, the management server 10 sets routes that are not congested as evacuation routes based on a heat map corresponding to the density of the entire building.

[0089] The processing unit 11 selects an image of evacuation information associated with the set evacuation route information and transmits the evacuation route information, which indicates the destination when evacuating, and the image of evacuation information associated with the evacuation route information to the projectors 40 installed near each entrance / exit of the facility on each floor. The projectors 40 installed at each entrance / exit of the facility identify the image of evacuation information associated with their own position in the transmitted evacuation route information, and project the identified image of evacuation information to equalize the flow of evacuees and enable efficient evacuation.

[0090] In this embodiment, a heatmap for the entire building is generated by simply overlaying and adding the density heatmaps of floors A to C, and this is used on all floors. However, the proximity to emergency exits and the movement routes will differ depending on whether users in the building are evacuating from upper floors to lower floors or from users who are originally on lower floors. Therefore, when generating heatmaps for the three floors, the management server 10 may apply weights set for each floor and then overlay and add the respective heatmaps.

[0091] For example, the coefficients for floors C, B, and A are set to 1, 0.7, and 0.4, respectively. These coefficients can be set arbitrarily. For example, the interval between coefficients can be adjusted appropriately depending on the number of floors. It is also possible to change the coefficients even within the same floor. In this case, the ranges are set as follows: floor C to 1-1.2, floor B to 0.7-0.9, and floor C to 0.4-0.6. This means that for floor C, locations far from the entrances and exits within facility A10 are set to 1.2, and locations near the stairs are set to 1. For floor A, locations far from the emergency exit are set to 0.6, and locations near the emergency exit are set to 1. Although this embodiment describes evacuation from an upper floor to a lower floor, the same applies to evacuation from a lower floor to an upper floor. Note that as the coefficient numbers increase, a higher density is derived accordingly.

[0092] Furthermore, if there is a floor among the multiple floors with a density lower than a predetermined standard value, the management server 10 may create a heat map by adding up the density of the multiple floors excluding that floor. For example, if the user density of floor A, which is on a lower level among floors A to C, the management server 10 may create a heat map by adding up the density of floors B and C. This has the effect of reducing the processing load on the density calculation processing unit 11 by preventing the management server 10 from performing calculations to overlay floors with density levels that would not affect the heat map of the entire building.

[0093] Next, with respect to the projector 40 installed inside the building, an example of the evacuation information projection process performed by the management server 10, projector 40, and identification information reading device 60 in the projection system S according to this embodiment will be explained using Figures 18 to 21. Figure 18 is a flowchart illustrating an example of the flow of the identification information reading process performed by the identification information reading device according to this embodiment. Figure 19 is a flowchart illustrating an example of the flow of the evacuation information projection process based on the density indicating the degree of congestion, performed by the management server according to this embodiment. Figure 20 is a schematic diagram showing an example of the flow of the evacuation information projection process performed by the projector according to this embodiment. Figure 21 is a schematic diagram showing an example of the flow of the congestion information update process performed by the management server according to this embodiment.

[0094] First, the evacuation information projection processing performed by the processing unit 61 of the identification information reader 60 will be explained. The processing unit 61 starts the evacuation information projection processing when the power to the identification information reader 60 is turned on. First, the processing unit 61 checks whether the communication unit 64 has received the transmission of identification information from the IC tag 70 (step S40). If the communication unit 64 has received the identification information from the IC tag 70 (step S40: YES), the processing unit 61 executes the process of sending the identification information and the unique ID of the identification information reader 60 stored in the storage unit 62 to the management server 10 via the communication unit 64 (step S41).

[0095] Next, the processing unit 61 checks whether or not a power-off operation has been input to the input unit 63 (step S42). If a power-off operation has not been input to the input unit 63 (step S42: NO), the processing unit 61 proceeds to step S40. On the other hand, if a power-off operation has been input to the input unit 63 (step S42: YES), the processing unit 61 terminates the process.

[0096] Next, the evacuation information projection process performed by the processing unit 11 of the management server 10 will be described. The processing unit 11 starts the evacuation information projection process when the management server 10 is powered on. First, the processing unit 11 performs a process to initialize the density information in the storage unit 12 (step SA10). Next, the processing unit 11 initializes the current value of the timer in the storage unit 12 (step SA11).

[0097] Next, the processing unit 11 checks whether the communication unit 15 has received identification information for the IC tag 70 from an external source (step SA12). If the communication unit 15 has not received identification information for the IC tag 70 from an external source (step SA12: NO), the processing unit 11 proceeds to step SA18. On the other hand, if the communication unit 15 has received identification information for the IC tag 70 from an external source (step SA12: YES), the processing unit 11 checks whether the timer has stopped (step SA13). The processing unit 11 stores the received identification information and the unique ID of the identification information reader 60 in the storage unit 12.

[0098] If the timer is not stopped (step SA13: NO), the processing unit 11 proceeds to step SA15. On the other hand, if the timer is stopped (step SA13: YES), the processing unit 11 starts the timer (step SA14).

[0099] Next, the processing unit 11 checks the timer to see if a predetermined time has elapsed (step SA15). If the predetermined time has not elapsed (step SA15: NO), the processing unit 11 proceeds to step SA18. On the other hand, if the predetermined time has elapsed (step SA15: YES), the processing unit 11 stops and resets the timer (step SA16). Next, the processing unit 11 executes the density information update process (step SA17). The density information update process, which is a subroutine, will be described later. The timer in this flowchart is used to determine the timing for updating the density information. For example, if the predetermined time in step SA15 is set to 30 minutes, the density information will be updated every 30 minutes.

[0100] Next, the processing unit 11 executes a process to generate evacuation route information based on the heatmap updated by the density update process in step SA17 (step SA18). Next, the processing unit 11 checks whether the communication unit 15 has acquired emergency information from an external source (step SA19). If the communication unit 15 has not acquired emergency information from an external source (step SA19: NO), the processing unit 11 moves the process to step SA12. On the other hand, if the communication unit 15 has acquired emergency information from an external source (step SA19: YES), the processing unit 11 executes a process to transmit the evacuation route information generated in step SA18 to each projector 40 via the communication unit 15 (step SA20).

[0101] Next, the processing unit 11 executes a process to select an image of evacuation information that corresponds to the evacuation route selected based on the heat map, based on the emergency information (step SA21). Next, the processing unit 11 executes a process to transmit the selected image of evacuation information (step SA22). Multiple projectors 40 placed in the building receive the transmitted image of evacuation information and project the image of evacuation information. That is, the management server 10 causes the projectors 40 to project images of the evacuation route to the emergency exit and images of evacuation information regarding evacuation after leaving the building, based on the acquired emergency information.

[0102] Next, the processing unit 11 checks whether or not a power-off operation has been input to the input unit 13 (step SA23). If no power-off operation has been input to the input unit 13 (step SA23: NO), the processing unit 11 proceeds to step SA12. On the other hand, if a power-off operation has been input to the input unit 13 (step SA23: YES), the processing unit 11 terminates the process.

[0103] Next, the evacuation information projection process performed by the processing unit 41 of the projector 40 will be described. The processing unit 41 starts the evacuation information projection process when the power of the projector 40 is turned on. First, the processing unit 41 checks whether the communication unit 45 has received the evacuation route information and the image of the evacuation information (step S50).

[0104] If the communication unit 45 has not received the evacuation route information and the image of the evacuation information (step S50: NO), the processing unit 41 proceeds to step S50. On the other hand, if the communication unit 45 has received the evacuation route information and the image of the evacuation information (step S50: YES), the processing unit 41 identifies the image of the evacuation information to be projected from the location information of the projector 40 inside the building and the evacuation route information stored in the storage unit 42 (step S51).

[0105] Next, the processing unit 41 performs a process to project an image of the specified evacuation information onto the projection unit 46 (step S52). Next, the processing unit 41 checks whether a command to terminate the process has been input to the input unit 43 or received by the communication unit 45 (step S53).

[0106] If a command to terminate processing is input to the input unit 43 or received by the communication unit 45 (step S53: YES), the processing unit 41 checks whether a power-off operation is input to the input unit 43 or received by the communication unit 45 (step S54). If a power-off operation is not input to the input unit 43 or received by the communication unit 45 (step S54: NO), the processing unit 41 proceeds to step S50. On the other hand, if a power-off operation is input to the input unit 43 or received by the communication unit 45 (step S54: YES), the processing unit 41 terminates processing.

[0107] Next, the congestion information update process according to this embodiment will be explained using Figure 21. The congestion information update process is started in step SA17 of the evacuation information projection process by the management server 10.

[0108] First, the processing unit 11 acquires identification information from the IC tags 70 that were acquired within the period and stored in the storage unit 12, for each floor (step SB10). Next, the processing unit 11 derives density information for each floor from the identification information from the IC tags 70 acquired within the period, the unique ID information of the identification information reader 60 that is the source of transmission, and the above table information, and generates a heat map for each floor (step SB11).

[0109] Next, the processing unit 11 generates a heat map of the entire building by overlaying the heat maps for each floor, and then overwrites and updates the heat map of the entire building stored in the storage unit 12 (step SB12), before moving the process to step SA18 of the evacuation information projection process of the main routine.

[0110] In the above-described embodiment, the evacuation information projection process for information regarding building exits projected an image of the evacuation information related to the building exits, and the evacuation information projection process for information regarding evacuation after leaving the building projected information regarding evacuation after leaving the building. However, the embodiment is not limited to this. For example, as shown in Figure 22, the evacuation information may include information regarding the exits and information regarding evacuation after leaving the building from those exits. Figure 22 is a diagram showing an example of images of evacuation information up to the building exit and evacuation information after leaving the building.

[0111] The evacuation information image 150 shown in Figure 22 is an image projected by a projector 40 installed inside the building, displaying evacuation information to the building's exit and evacuation information after leaving the building. The example in Figure 22 is an image of evacuation information for evacuating from floor B to the evacuation area in the building shown in Figure 7. In this case, the evacuation information displays evacuation information to the stairs to move to floor A, evacuation information from the stairs after descending to floor A to the building's exit, and evacuation information to the evacuation area after leaving the building from the exit.

[0112] Specifically, evacuation information image 150 displays evacuation information image 151, which is evacuation information to the stairs to move to floor A; evacuation information image 152, which is evacuation information from the stairs after descending to floor A to the building exit; and evacuation information image 153, which is evacuation information after exiting the building. In addition, evacuation information image 151 displays an evacuation order indicator 151a, which indicates when the evacuation information should be performed, an evacuation direction indicator 151b, and an evacuation location icon 151c. The evacuation order indicator 151a indicates, for example, that the action related to the evacuation information displayed as "1st" should be performed first, and the action related to the evacuation information displayed as "2nd" should be performed second. Images 152 and 153 of the evacuation information have a similar structure, so their explanation is omitted.

[0113] Furthermore, to make it easier to distinguish between evacuation information that should be taken now and evacuation information that should be taken in the future, image 151 of the evacuation information that should be taken now is displayed larger than the images of other evacuation information. However, this is not the only way to make it easier to understand; changing the color or altering the display may also be used.

[0114] Traditionally, employees commuting to buildings worked on predetermined floors or at predetermined desks within a floor. In the event of a disaster, they evacuated through emergency exits via predetermined evacuation routes corresponding to their assigned floor or desk. However, in recent years, the increased use of teleworking has reduced the frequency of employees commuting to the office, and rationalization through the implementation of free-address seating has led to a less consistent distribution of people on each floor depending on the day and time. In this case, using predetermined evacuation routes could lead to congestion at some emergency exits.

[0115] Furthermore, depending on the type of disaster, it may be necessary to head to designated evacuation areas within the building after leaving the building. However, with conventional technology, each person had to know their evacuation destination after leaving the building. This could lead to people feeling complacent after leaving the building, or to congestion near the building's exits.

[0116] In the evacuation information display method of this embodiment described above, the management server 10 acquires emergency information indicating the issuance of an evacuation order, and displays an image of evacuation information related to evacuation after leaving the building exit using a display device based on the emergency information.

[0117] As a result, the evacuation information display method according to this embodiment can communicate to people evacuating from a building the evacuation location after they leave the building.

[0118] The display device is a projector capable of projecting images of evacuation information.

[0119] This allows the installation location of the projector 40 as a display device and the display location of the evacuation information image to be separate. For example, as in the embodiment described above, the projector 40 can be installed on the ceiling or the like, and the projection location can be the floor or wall, etc., which is different from the ceiling, and projection can be disabled when not needed. Therefore, when the display device is a projector, there is no need to install a display device at the display location, and projection can be disabled when not needed, so the display location on the floor or wall, etc., can be used more effectively.

[0120] Furthermore, in the evacuation information display method according to this embodiment, an image of the evacuation information is acquired based on the emergency information and the installation information of the projector 40.

[0121] This allows the projector 40 to project images of evacuation information specific to its installation location, enabling evacuees to obtain more detailed evacuation information and evacuate more smoothly.

[0122] Furthermore, the evacuation information is characterized by including information regarding exits and evacuation information regarding evacuation after leaving the building via an exit.

[0123] This allows people evacuating from a building to receive not only evacuation information from inside the building to outside, but also evacuation information to a designated evacuation site after they have left the building, enabling them to evacuate more smoothly from inside the building to a designated evacuation site.

[0124] Furthermore, the evacuation information display method according to this embodiment is characterized by projecting an image of evacuation information using a projector 40 installed at or near the exit of a building.

[0125] As a result, in the evacuation information display method according to this embodiment, people evacuating from a building can view images of evacuation information after they have left the building in a timely manner, enabling a smoother evacuation.

[0126] Furthermore, the evacuation information display method according to this embodiment is characterized by including at least one of the following: the name of the evacuation site, the direction from the building exit to the evacuation site, the distance to the evacuation site, and information on the facilities of the evacuation site.

[0127] As a result, in the evacuation information display method according to this embodiment, people evacuating from a building can view images of more detailed evacuation information regarding evacuation locations at the moment they leave the building, enabling them to evacuate to the evacuation location more smoothly. Furthermore, even if the evacuation location is far from the building, they can evacuate more smoothly based on this information.

[0128] The evacuation information display method configured as described above projects images of evacuation routes using multiple projectors 40 placed inside the building.

[0129] As a result, in the evacuation information display method according to this embodiment, people evacuating can also confirm the evacuation route from inside the building to the building's emergency exit, allowing for a smoother evacuation.

[0130] Furthermore, the evacuation information display method according to this embodiment acquires density information to determine the density of people on each floor of a building with two or more floors, sets evacuation routes based on the acquired density, and projects images of the evacuation routes using multiple projectors 40 installed on each floor.

[0131] This allows evacuation information images to be selected based on heatmaps generated for each floor, enabling the selection of more accurate, less crowded evacuation routes.

[0132] Furthermore, in the evacuation information display method according to this embodiment, when acquiring density information, each floor is divided into multiple areas, and the density is acquired for each area. When setting evacuation routes, the density in the vertical direction is acquired based on the density of each area and the density of other areas that are on different floors and overlap vertically, and evacuation routes are set based on the density.

[0133] This means that evacuation routes are generated based on more detailed density information, allowing evacuators to more reliably evacuate via less crowded routes.

[0134] Furthermore, when setting up evacuation routes, the content of the evacuation routes displayed is set according to the positions of the multiple projectors 40 so that evacuations are dispersed based on the degree of overlap and density.

[0135] As a result, multiple projectors 40 are installed inside the building. In other words, the projectors 40 are set up in multiple locations inside the building. Since the projectors 40 can display evacuation route information according to their installation location, people evacuating can check the evacuation route information corresponding to their location at the installation location of multiple projectors 40, and thus be able to evacuate more reliably via an evacuation route that is less congested.

[0136] Furthermore, the present invention is not limited to the embodiments described above, and any modifications, improvements, etc., that can achieve the objectives of the present invention are included within the scope of the present invention.

[0137] <Other variations> In the projection system S according to the above embodiment, the management server 10 acquired whether an emergency occurred and its type, and selected an image for evacuation information. However, the projector 40 may also acquire whether an emergency occurred and its type, and select an image for evacuation information, or it may perform the evacuation information projection process independently. Below, the evacuation information projection process performed independently by the projector 40 will be explained using Figure 23. The projector 40 stores images of evacuation information corresponding to the location of the emergency exit where it is installed in its storage unit 42.

[0138] When the projector 40 is powered on, it starts the process of projecting evacuation information on its own. First, the processing unit 41 of the projector 40 checks whether or not emergency information has been transmitted to the communication unit 45 (step S30). If emergency information has been transmitted to the communication unit 45 (step S30: YES), the processing unit 41 executes a process to select an image of evacuation information to be projected from the images of evacuation information stored in the storage unit 42 based on the received emergency information (step S31). Next, the processing unit 41 projects the selected image of evacuation information onto the projection unit 46 (step S32).

[0139] Next, the processing unit 41 checks whether a request to terminate projection has been sent to the communication unit 45 (step S33). If a request to terminate projection has been sent to the communication unit 45 (step S33: YES), the processing unit 41 checks whether a request to terminate the projection of the evacuation information image by the projection unit 46 and turn off the power of the projector 40 has been input to the input unit 43 or sent to the communication unit 45 (step S34).

[0140] If no request to turn off the power is input to the input unit 43 or transmitted to the communication unit 45 (step S34: NO), the processing unit 41 proceeds to step S30. On the other hand, if a request to turn off the power is input to the input unit 43 or transmitted to the communication unit 45 (step S34: YES), the processing unit 41 terminates the process.

[0141] Even with the modifications described above, the evacuation information display method according to this embodiment can communicate to people evacuating a building the location of an evacuation site outside the building.

[0142] Furthermore, in the above-described embodiment, since the shape of each floor was the same from the lower to the upper floors, it was possible to superimpose and add the heat maps of each floor when generating a heat map of the entire building. However, even if the shapes of each floor are not the same, or if the locations of stairs or other places that allow users to move to other floors differ from floor to floor, the processing unit 11 of the management server 10 according to this embodiment can generate a heat map of the entire building by superimposing it onto the shape of a single floor.

[0143] Furthermore, in the projection system S according to the above embodiment, the processing unit 11 of the management server 10 generated evacuation route information and selected an image of the evacuation information in the case of going from the upper floors to the emergency exit via the evacuation route. However, it may also be configured to generate evacuation route information and select an image of the evacuation information to project the evacuation route in the case of going from the lower floors to the upper floors, for example, in the case of a tsunami or flood. In that case, the processing unit 11 generates evacuation route information and selects an image of the evacuation information to project based on the distance from the building to the sea, the elevation of the building relative to the sea, the magnitude of the earthquake, or flood inundation information such as floods from hazard maps of local governments, etc.

[0144] Furthermore, in the above-described embodiment, the projector 40 projected an image of evacuation information, but the projected image is not limited to this. For example, it could also be a hazard information image that displays the direction of an area where a fire has occurred or an area where passage is impossible or dangerous due to an earthquake, and instructs people not to evacuate in that direction. In this case, the projector 40 receives a message from a server or the like indicating the direction of an area where passage is dangerous due to a fire, a collapsed ceiling, a subsided floor, etc., and projects a hazard information image onto each projector to instruct people not to evacuate in that direction.

[0145] Furthermore, while the projection system S according to this embodiment uses an IC tag 70 as the information terminal, the information terminal is not limited to this, and may be any electronic device such as a smartphone or tablet that can hold and transmit identification information.

[0146] Furthermore, in the above-described embodiment, the management server 10, projector 40, and identification information reading device 60 are separate components, but the configuration is not limited to this. For example, the projector 40 may have a built-in identification information reading unit, or the projector 40 may have a built-in management server 10. Alternatively, the management server 10, projector 40, and identification information reading device 60 may be housed in a single enclosure. In addition, the projector 40 and identification information reading device 60 can be set as appropriate, not limited to the above-described embodiment or its installation location. Furthermore, the projector 40 may perform the processing that was performed by the processing unit 11 of the management server 10 described above.

[0147] The series of processes described above can be executed by hardware or by software. In other words, the functional configuration in Figure 6 is merely illustrative and not particularly limiting. That is, it is sufficient that the projection system S is equipped with a function that can execute the series of processes described above as a whole, and the type of functional block used to realize this function is not particularly limited to the example in Figure 6. Furthermore, a single functional block may be composed of hardware alone, software alone, or a combination of both.

[0148] The functional configuration in this embodiment is realized by a processor that performs arithmetic processing. Processors that can be used in this embodiment include not only single-processor, multi-processor, and multi-core processors, but also combinations of these various processing units with processing circuits such as ASICs (Application Specific Integrated Circuits) and FPGAs (Field-Programmable Gate Arrays).

[0149] When a series of processes are executed by software, the programs that make up that software are installed on a computer or other device from a network or storage medium. The computer may be a computer built into dedicated hardware. Alternatively, the computer may be a computer capable of performing various functions by installing various programs, such as a general-purpose personal computer.

[0150] Such recording media containing programs are not only composed of removable media separate from the main unit of the device in order to provide the program to the user, but also of recording media provided to the user in a state where they are pre-installed in the main unit of the device. Removable media are composed of, for example, magnetic disks (including floppy disks), optical disks, or magneto-optical disks. Optical disks are composed of, for example, CD-ROMs (Compact Disk-Read Only Memory), DVDs (Digital Versatile Disks), Blu-ray® Discs, etc. Magneto-optical disks are composed of, for example, MDs (Mini-Disks). Furthermore, recording media provided to the user in a state where they are pre-installed in the main unit of the device are composed of, for example, ROMs on which programs are recorded, or hard disks included in the storage unit 12 in Figure 5.

[0151] In this specification, the step of describing a program to be recorded on a recording medium includes not only processes that are performed chronologically in that order, but also processes that are not necessarily performed chronologically, but are executed in parallel or individually.

[0152] Although several embodiments of the present invention have been described above, these embodiments are merely illustrative and do not limit the technical scope of the present invention. The present invention can take various other embodiments, and furthermore, various modifications such as omissions and substitutions can be made without departing from the spirit of the present invention. These embodiments and their variations are included in the scope and spirit of the invention as described herein, and are also included in the scope of the invention and its equivalents as described in the claims.

[0153] The invention described in the original claims of this application is listed below. [Note 1] Information processing device, We obtained emergency information indicating the issuance of an evacuation order. Based on the aforementioned emergency information, an image of evacuation information regarding evacuation after leaving the building's exit is displayed on the display device. How to display evacuation information. [Note 2] The method for displaying evacuation information as described in Appendix 1, wherein the display device is a projection device capable of projecting the image of the evacuation information. [Note 3] The method for displaying evacuation information according to Appendix 1 or 2, characterized in that an image of the evacuation information is acquired based on the emergency information and the installation information of the display device. [Note 4] The method for displaying evacuation information according to any one of the appendices 1 to 3, characterized in that the evacuation information includes information regarding the exit and information regarding evacuation after leaving the building from the exit. [Note 5] The method for displaying evacuation information according to any one of the appendices 1 to 4, characterized in that an image of the evacuation information is displayed on a display device installed at or near the exit of a building. [Note 6] The method for displaying evacuation information according to any one of the appendices 1 to 5, characterized in that the evacuation information includes at least one of the following: the name of the evacuation site, the direction from the building's exit to the evacuation site, the distance to the evacuation site, and information about the facilities of the evacuation site. [Note 7] The method for displaying evacuation information according to any one of the appendices 1 to 6, characterized in that an image of the evacuation route is displayed by a plurality of the display devices arranged inside the building. [Note 8] In the aforementioned building with two or more floors, density information is obtained to determine the density of people on each floor. Based on the acquired density, the evacuation route is set. The evacuation information display method according to Appendix 7, characterized in that an image of the evacuation route is displayed by a plurality of the aforementioned display devices provided on each floor. [Note 9] In acquiring the density information, each floor is divided into multiple areas, and the density is acquired for each area. The evacuation information display method described in Appendix 8, in setting the evacuation route, obtains the overlapping density in the vertical direction based on the density of each area and the density of other areas that are on different floors and overlap vertically, and sets the evacuation route based on the overlapping density. [Note 10] In setting the aforementioned evacuation route, The method for displaying evacuation information according to Appendix 9, characterized in that the content of the evacuation routes to be displayed is set according to the positions of the multiple display devices so that evacuations are dispersed based on the overlap density. [Note 11] An information processing device comprising: an emergency information acquisition unit that acquires emergency information indicating the issuance of an evacuation order; and a first communication control unit that processes the acquisition of the emergency information to transmit an image of evacuation information regarding evacuation after leaving the building to an external source; An evacuation information display system comprising: a second communication control unit that processes an image of the evacuation information transmitted from an information processing device; and a display device provided near the exit of the building that displays the image of the evacuation information that has been processed by the second communication control unit. [Note 12] In an information processing device, To obtain emergency information indicating the issuance of evacuation orders, A communication control function is executed to perform the process of transmitting images of evacuation information regarding evacuation after leaving the building, based on the acquired emergency information. The aforementioned communication control function is a program that controls the display device to send a command to display the emergency information when transmitting the image of the evacuation information. [Note 13] On the display device, To obtain emergency information indicating the issuance of evacuation orders, A program that displays images of evacuation information related to evacuating after leaving a building, based on the aforementioned emergency information that has been acquired. [Explanation of Symbols]

[0154] 10 Management Server 23 Emergency Information Acquisition Department 24 Evacuation Information Selection Section 25 Evacuation Information Output Unit 40 projectors

Claims

1. Information processing device, We obtained emergency information indicating the issuance of an evacuation order. Based on the aforementioned emergency information, the evacuation information regarding evacuation after leaving the building's exit includes an evacuation direction indicator showing the direction of evacuation to the destination and evacuation destination information showing the details of the said destination, which are displayed on a display device installed around the exit. The display device displays the evacuation direction indicator at a location outside the building and close to the exit, and displays the evacuation destination information at a location based on the evacuation direction and away from the building's exit. The display device is a projection device capable of projecting the image of the evacuation information, The information processing device is an evacuation information display method that acquires an image of the evacuation information based on the emergency information and the installation information of the display device.

2. The method for displaying evacuation information according to claim 1, characterized in that the evacuation information includes information regarding the exit and information regarding evacuation after leaving the building from the exit.

3. The method for displaying evacuation information according to claim 1 or 2, characterized in that the display device displays an image of the evacuation information.

4. The method for displaying evacuation information according to any one of claims 1 to 3, characterized in that the evacuation information includes at least one of the following: the name of the evacuation site, the distance to the evacuation site, and information on the facilities of the evacuation site.

5. The method for displaying evacuation information according to any one of claims 1 to 4, characterized in that an image of the evacuation route is displayed by a plurality of the display devices arranged inside the building.

6. In the aforementioned building with two or more floors, density information is obtained to determine the density of people on each floor. Based on the acquired density, the evacuation route is set. The method for displaying evacuation information according to claim 5, characterized in that an image of the evacuation route is displayed by a plurality of the display devices provided on each floor.

7. In acquiring the density information, each floor is divided into multiple areas, and the density is acquired for each area. The method for displaying evacuation information according to claim 6, wherein, in setting the evacuation route, the method obtains the overlapping density in the vertical direction based on the density of each area and the density of other areas that are on different floors and overlap vertically, and sets the evacuation route based on the overlapping density.

8. In setting the aforementioned evacuation route, The method for displaying evacuation information according to claim 7, characterized in that the content of the evacuation route to be displayed is set according to the position of a plurality of the display devices so that evacuation is dispersed based on the overlap density.

9. An information processing device comprising: an emergency information acquisition unit that acquires emergency information indicating the issuance of an evacuation order; and a first communication control unit that processes the acquisition of the emergency information to transmit an image of evacuation information regarding evacuation after leaving the building to an external source; The system comprises a second communication control unit that processes an image of the evacuation information transmitted from an information processing device, and a display device installed near the exit of the building that displays the image of the evacuation information that has been processed by the second communication control unit. The display device displays an evacuation direction indicator, which shows the direction of evacuation regarding the evacuation destination in the evacuation information after leaving the building exit based on the emergency information, at a location outside the building and close to the exit, and displays the evacuation destination information, which shows the information of the evacuation destination, at a location based on the evacuation direction and away from the building exit. The display device is a projection device capable of projecting the image of the evacuation information, The information processing device is an evacuation information display system that acquires an image of the evacuation information based on the emergency information and the installation information of the display device.

10. A display device, capable of projecting information, is installed near the building's exit. To obtain emergency information indicating the issuance of evacuation orders, Based on the acquired emergency information, the system displays an evacuation direction indicator showing the direction of evacuation to the evacuation destination and evacuation destination information showing the information of the evacuation destination after leaving the building exit. The evacuation direction indicator is displayed outside the building and near the exit, and the evacuation destination information is displayed at a location based on the evacuation direction and away from the building's exit. A program that acquires an image of the evacuation information based on the aforementioned emergency information and the installation information of the display device.

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