Display system and display method

Abstract

To provide a display system and a display method for presenting the position of a communication device in space to a user.SOLUTION: A display system 10 includes: an information terminal 40 located in a space 60 inside a building; and an information processing unit 45 that displays, on a display unit 42, the position of the information terminal 40 measured based on the communication state of wireless communication with each of a plurality of disaster prevention lighting fixtures 20 installed in the space 60 while superimposing it on a map of the space 60.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a display system and a display method. [Background technology]

[0002] Various disaster prevention technologies have been proposed. Patent Document 1 discloses a lighting device that can monitor and notify information when an external power supply is cut off. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-225170 Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention provides a display system and a display method that can present the position of a communication device in space to a user. [Means for solving the problem]

[0005] A display system according to one aspect of the present invention includes an information processing unit that displays on a display unit the position of a communication device located in a space within a building, the position of the communication device being measured based on the communication status of wireless communication between the communication device and each of a plurality of lighting fixtures installed in the space, superimposed on a map of the space.

[0006] A display method according to one aspect of the present invention is a display method executed by a computer, in which the position of a communication device located in a space within a building, measured based on the communication status of wireless communication between the communication device and each of a plurality of lighting fixtures installed in the space, is displayed on a display unit by superimposing it on a map of the space.

[0007] A program according to one aspect of the present invention is a program for causing a computer to execute the display method. [Effects of the Invention]

[0008] The display system and display method of the present invention can present the position of a communication device in space to a user. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a block diagram showing a functional configuration of a display system according to an embodiment. [Figure 2] FIG. 2 is a diagram showing a space to which the display system according to the embodiment is applied. [Figure 3] FIG. 3 is a diagram illustrating an example of the arrangement information. [Figure 4] FIG. 4 is a flowchart of a first example of the display operation. [Figure 5] FIG. 5 is a diagram showing an example of displaying the position of an information terminal on a map. [Figure 6] FIG. 6 is a flowchart of a second example of the display operation. [Figure 7] FIG. 7 is a sequence diagram of the inspection operation of the disaster prevention lighting fixture. [Figure 8] FIG. 8 is a diagram showing an example of the inspection screen. [Figure 9] FIG. 9 is a diagram showing an example of an inspection screen on which the elapsed time is displayed. [Figure 10] FIG. 10 is a diagram showing an example of the inspection screen on which the inspection results are displayed. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments will be described with reference to the drawings. Note that the embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, component placement and connection forms, steps, and step order shown in the following embodiments are merely examples and are not intended to limit the present invention. Furthermore, among the components in the following embodiments, components not recited in independent claims will be described as optional components.

[0011] It should be noted that the drawings are schematic diagrams and are not necessarily strict illustrations. In addition, in the drawings, substantially the same components are denoted by the same reference numerals, and overlapping descriptions may be omitted or simplified.

[0012] (Embodiment) [composition] First, the configuration of a display system according to an embodiment will be described. Fig. 1 is a block diagram showing the functional configuration of the display system according to an embodiment. Fig. 2 is a diagram showing a space to which the display system according to an embodiment is applied.

[0013] The display system 10 is a system that can measure the position of an information terminal 40 in a space 60 (more specifically, an indoor space) and display the position on a display unit 42 of the information terminal 40. As shown in FIG. 1 , the display system 10 includes a plurality of disaster prevention lighting devices 20, the information terminal 40, and a server device 50.

[0014] First, the disaster prevention lighting fixture 20 will be described. The disaster prevention lighting fixture 20 is a lighting fixture that emits light using power stored in a storage battery 23 when a power outage occurs due to a disaster or the like. The disaster prevention lighting fixture 20 is an example of a lighting fixture. Under normal circumstances (when there is no power outage), the disaster prevention lighting fixture 20 is supplied with AC power from a system power supply. Under normal circumstances, the disaster prevention lighting fixture 20 charges the storage battery 23 using the AC power in preparation for a power outage.

[0015] Disaster prevention lighting devices 20 include guide lights, emergency lighting devices (emergency lights), stairway / corridor guide lights, etc. Disaster prevention lighting devices 20 only need to emit light using power stored in storage battery 23 at least during a power outage, and it is optional whether or not they emit light using AC power supplied from a power grid during normal times. In other words, disaster prevention lighting devices 20 include disaster prevention lighting devices that emit light both during normal times and during power outages, and disaster prevention lighting devices that emit light only during power outages, out of normal times and power outages. Disaster prevention lighting devices 20 specifically include a wireless communication unit 21, a light source 22, and a storage battery 23.

[0016] The wireless communication unit 21 is a wireless communication circuit that enables the disaster prevention lighting device 20 to perform wireless communication (more specifically, radio wave communication) with an external device such as an information terminal 40. The wireless communication unit 21 periodically transmits a beacon signal (sometimes called an advertisement signal) and performs wireless communication with the information terminal 40 that receives the beacon signal. Specifically, the wireless communication unit 21 is a BLE (Blu-ray Disc) communication circuit. e Wireless communication is performed according to communication standards such as LTE (registered trademark), Bluetooth Low Energy (registered trademark), or Wi-Fi (registered trademark).

[0017] The light source 22 emits light using power supplied from the storage battery 23 during a power outage. The light emitted by the light source 22 is, for example, white light. The light source 22 is realized by, for example, an LED (Light Emitting Diode) element, but may also be realized by other light-emitting elements such as a semiconductor laser, an organic EL (Electro-Luminescence), or an inorganic EL.

[0018] As described above, disaster prevention lighting devices 20 include disaster prevention lighting devices that emit light both during normal operation and during a power outage, and disaster prevention lighting devices that emit light only during a power outage. When disaster prevention lighting device 20 emits light both during normal operation and during a power outage, the same light source 22 may be used to emit light during normal operation and during a power outage, or different light sources may be used to emit light during normal operation and during a power outage. In other words, disaster prevention lighting device 20 may be provided with a light source that is used for emission of light during normal operation, separate from light source 22.

[0019] The storage battery 23 is a secondary battery that is normally charged using AC power supplied from a power grid and that supplies power to the light source 22 during a power outage. In other words, the storage battery 23 is a power source that is used during a power outage. The storage battery 23 is realized by, for example, a lithium ion battery.

[0020] Next, the information terminal 40 will be described. The information terminal 40 displays the current location of the information terminal 40 (hereinafter also simply referred to as location) on a display unit 42 based on the state of wireless communication between the information terminal 40 and each of the plurality of disaster prevention lighting devices 20. The information terminal 40 is, for example, a mobile terminal such as a smartphone, a tablet terminal, or a PDA (Personal Digital Assistant). The information terminal 40 may also be a dedicated terminal used in the display system 10. A user of the information terminal 40 is an installer, inspector, or owner of the disaster prevention lighting device 20. More specifically, the owner is the owner of the building (facility) in which the disaster prevention lighting device 20 is installed. The information terminal 40 specifically includes an input receiving unit 41, a display unit 42, a first communication unit 43, a second communication unit 44, an information processing unit 45, and a storage unit 46.

[0021] The input receiving unit 41 receives input from a user. Specifically, the input receiving unit 41 is realized by a touch panel or the like.

[0022] The display unit 42 is a display that displays the position of the disaster prevention lighting device 20. The display unit 42 is realized by a display panel such as a liquid crystal panel or an organic EL panel, for example.

[0023] The first communication unit 43 is a wireless communication circuit that enables the information terminal 40 to perform wireless communication (more specifically, radio wave communication) through a local communication network with each of the plurality of disaster prevention lighting devices 20. Specifically, the first communication unit 43 performs wireless communication in accordance with a communication standard such as BLE or Wi-Fi (registered trademark).

[0024] The second communication unit 44 is a wireless communication circuit for allowing the information terminal 40 to perform wireless communication with the server device 50 through a wide area communication network. The wide area communication network here includes a mobile communication network, the Internet, and the like.

[0025] The information processing unit 45 performs information processing (display processing) for displaying the position of the information terminal 40 on the display unit 42. The information processing unit 45 is realized by, for example, a microcomputer, but may also be realized by a processor or a dedicated circuit. The functions of the information processing unit 45 are realized by hardware such as a microcomputer or processor constituting the information processing unit 45 executing a computer program (software) stored in the storage unit 46.

[0026] The storage unit 46 is a storage device that stores information necessary for the display processing. The information stored in the storage unit 46 includes a computer program executed by the information processing unit 45. The computer program is, for example, a so-called application program (hereinafter also simply referred to as an app) that is installed in the storage unit 46 in advance by a user. The storage unit 46 is realized, for example, by a semiconductor memory or the like.

[0027] The server device 50 receives, from the information terminal 40, information (signal strength information) indicating the communication status of wireless communication between the information terminal 40 and each of the plurality of disaster prevention lighting devices 20, and measures the position of the information terminal 40 in the space 60 based on the received signal strength information. The server device 50 is, for example, a cloud computer provided outside a building (facility) that constitutes the space 60, but may also be an edge computer provided inside the building. The server device 50 includes a communication unit 51, a measurement processing unit 52, and a storage unit 53.

[0028] The communication unit 51 is a communication module (communication circuit) that enables the server device 50 to communicate with the information terminal 40 through a wide area communication network. The communication unit 51 receives, for example, signal strength information from the information terminal 40. The communication performed by the communication unit 51 may be wired communication or wireless communication. There is no particular limitation on the communication standard used for the communication.

[0029] The measurement processing unit 52 performs information processing (measurement processing) for measuring the position of the information terminal 40. Specifically, the measurement processing unit 52 is realized by a processor or a microcomputer. The function of the measurement processing unit 52 is realized by the processor or microcomputer constituting the measurement processing unit 52 executing a computer program stored in the storage unit 53.

[0030] The storage unit 53 is a storage device that stores information necessary for the measurement processing. The information stored in the storage unit 53 includes a computer program executed by the measurement processing unit 52. Specifically, the storage unit 53 is realized by a semiconductor memory, a HDD, or the like.

[0031] The storage unit 53 stores map information of the space 60 as information necessary for the measurement process. In other words, the map information of the space 60 is floor plan information, and is information showing a map of the space 60 as seen from above. The map information has two-dimensional coordinate axes set.

[0032] The storage unit 53 is also a storage device that stores, as information necessary for the measurement process, placement information indicating the placement (coordinates) of the plurality of disaster prevention lighting devices 20. Fig. 3 is a diagram showing an example of the placement information. As shown in Fig. 3, the placement information associates the ID of the disaster prevention lighting device 20, the type of the disaster prevention lighting device 20, and the position of the disaster prevention lighting device 20 (two-dimensional coordinates on the map shown by the map information).

[0033] The map information and the arrangement information as described above are registered in the server device 50, for example, when a plurality of disaster prevention lighting devices 20 are installed (constructed) in the space 60.

[0034] [Example 1 of information terminal location display] As described above, the display system 10 can display the position of the information terminal 40 (beacon receiver) on the display unit 42. Hereinafter, a first example of such a display operation will be described. Fig. 4 is a flowchart of the first example of the display operation.

[0035] The user performs an input (a predetermined operation) to display the location of the information terminal 40, and the input receiving unit 41 receives such input (S11). The first communication unit 43 receives a beacon signal from each of the plurality of disaster prevention lighting devices 20 (S12), and the information processing unit 45 measures the received signal strength (RSSI: Received Signal Strength Indicator) of the received beacon signal (S13).

[0036] Each of the plurality of disaster prevention lighting devices 20 periodically transmits a beacon signal, and the beacon signal includes the ID of the disaster prevention lighting device 20. The ID is, for example, a MAC (Media Access Control) address, but may be another ID.

[0037] Next, the information processing unit 45 transmits signal strength information to the server device 50, in which the measured received signal strength is associated with the ID of the disaster prevention lighting device 20 that is the source of the beacon signal and is included in the beacon signal (S14). The signal strength information is information that indicates the received signal strength of each of the multiple beacon signals together with the ID of the disaster prevention lighting device 20 that is the source of the beacon signal. Specifically, the signal strength information is transmitted to the server device 50 by the second communication unit 44.

[0038] The communication unit 51 of the server device 50 receives the signal strength information. The measurement processing unit 52 measures the position of the information terminal 40 based on the signal strength information received by the communication unit 51 and the location information (FIG. 3) (S15).

[0039] Specifically, the measurement processing unit 52 identifies the position of the disaster prevention lighting device 20 that transmitted the beacon signal on the map indicated by the map information, based on the ID of the disaster prevention lighting device 20 that transmitted the beacon signal, which is included in the signal strength information, and the placement information. Furthermore, the received signal strength of the beacon signal can be considered as the distance from the disaster prevention lighting device 20 that transmitted the beacon signal to the information terminal 40. Therefore, the measurement processing unit 52 can measure (estimate) the position of the information terminal 40 based on the position of the disaster prevention lighting device 20 that transmitted the beacon signal and the distance from the disaster prevention lighting device 20 to the information terminal 40.

[0040] Specifically, the position of the information terminal 40 is the two-dimensional coordinates of the information terminal 40 on the map indicated by the map information. Any existing algorithm may be used as a method for measuring the position based on the signal strength information and the location information.

[0041] Next, the measurement processing unit 52 transmits position information indicating the measured position, map information, and placement information to the information terminal 40 (S16). Specifically, the position information, map information, and placement information are transmitted to the information terminal 40 by the communication unit 51.

[0042] The second communication unit 44 of the information terminal 40 receives the position information, map information, and placement information. Based on the received position information and map information, the information processing unit 45 superimposes the position of the information terminal 40 on the map indicated by the map information and displays it on the display unit 42 (S17). Figure 5 is a diagram showing an example of displaying the position of the information terminal 40 on the map.

[0043] 5, the map displays the current location of the information terminal 40 as well as the location of the disaster prevention lighting device 20 on the map. Specifically, in addition to an icon 42a indicating the current location of the information terminal 40, an icon 42b of the disaster prevention lighting device 20 is displayed on the map at the location of the disaster prevention lighting device 20. The icon 42b of the disaster prevention lighting device 20 differs depending on, for example, the type of the disaster prevention lighting device 20. The information processing unit 45 can display the location of the disaster prevention lighting device 20 based on the map information and placement information received in step S16.

[0044] Whether or not to display the positions of the disaster prevention lighting devices 20 may be switched based on a user's input to the input receiving unit 41. Furthermore, since the placement information includes information on the types of disaster prevention lighting devices 20, the information processing unit 45 can switch between displaying and hiding for each type of disaster prevention lighting device 20 based on a user's input to the input receiving unit 41. The information processing unit 45 can perform display processing such as, for example, displaying the positions of emergency lights but not displaying the positions of emergency lighting devices.

[0045] In step S17, it is sufficient that the position of at least the information terminal 40 is displayed, and it is not essential that the position of the disaster prevention lighting device 20 is displayed. If the position of the disaster prevention lighting device 20 is not displayed, transmission of the location information from the server device 50 to the information terminal 40 in step S16 can be omitted.

[0046] The processes of steps S12 to S17 are repeated at predetermined time intervals, and the position of information terminal 40 displayed on display unit 42 is periodically updated. That is, the current position of information terminal 40 is displayed substantially in real time on display unit 42. Note that it is sufficient to transmit map information and location information only the first time in step S16, and from the second time onwards, only the position information may be transmitted.

[0047] As described above, the display system 10 includes an information processing unit 45 that displays on the display unit 42 the position of the information terminal 40, measured based on the state of wireless communication between the information terminal 40 located in the space 60 within the building and each of the plurality of disaster prevention lighting devices 20 installed in the space 60, superimposed on a map of the space 60. Furthermore, the information processing unit 45 displays on the display unit 42 the position of at least one of the plurality of disaster prevention lighting devices 20, in addition to the measured position of the information terminal 40, superimposed on the map.

[0048] Such a display system 10 can present the user with the location of the information terminal 40. As described above, the disaster prevention lighting device 20 is equipped with the storage battery 23, and in the event of a power outage, the disaster prevention lighting device 20 transmits a beacon signal using power supplied from the storage battery 23. Therefore, the display system 10 has the advantage of being able to present the user with the location of the information terminal 40 even in the event of a power outage.

[0049] The map information and the location information may be stored in advance in the storage unit 46 of the information terminal 40. In this case, the information processing unit 45 of the information terminal 40 can measure the position of the information terminal 40 without transmitting signal strength information to the server device 50. In other words, the position of the information terminal 40 may be measured by the information terminal 40 instead of the server device 50.

[0050] [Example 2 of information terminal location display behavior] In the above-described example 1 of the display operation, the position of the information terminal 40 is measured based on the received signal strength at the information terminal 40 of the beacon signal transmitted by each of the plurality of disaster prevention lighting devices 20. However, the position of the information terminal 40 may also be measured based on the received signal strength at each of the plurality of disaster prevention lighting devices 20 of the beacon signal transmitted by the information terminal 40. Such example 2 of the display operation will be described below. Figure 6 is a flowchart of example 2 of the display operation.

[0051] The user performs an input (a predetermined operation) to display the location of the information terminal 40, and the input receiving unit 41 receives such input (S21). The first communication unit 43 transmits a beacon signal based on the received input (S22). Thereafter, the first communication unit 43 periodically transmits a beacon signal, and the beacon signal includes the ID of the information terminal 40. The ID is, for example, a MAC address, but may be another ID.

[0052] Each of the plurality of disaster prevention lighting devices 20 receives the beacon signal and measures the received signal strength of the received beacon signal (S23). Furthermore, each of the plurality of disaster prevention lighting devices 20 transmits (replies) to the information terminal 40 individual signal strength information that associates the measured received signal strength with the ID of the disaster prevention lighting device 20 (S24).

[0053] The first communication unit 43 of the information terminal 40 receives the individual signal strength information from each of the plurality of disaster prevention lighting devices 20. The information processing unit 45 generates signal strength information by integrating the measured plurality of pieces of individual signal strength information, and transmits the generated signal strength information to the server device 50 (S25). The signal strength information is information that indicates the received signal strength of each of the plurality of beacon signals together with the ID of the disaster prevention lighting device 20 that transmitted the beacon signal. Specifically, the signal strength information is transmitted to the server device 50 by the second communication unit 44.

[0054] The subsequent processing of steps S26 to S28 is the same as steps S15 to S17 in the first example of display operation.

[0055] The processes of steps S22 to S28 are repeated at predetermined time intervals, and the position of information terminal 40 displayed on display unit 42 is periodically updated. That is, the current position of information terminal 40 is displayed substantially in real time on display unit 42. Note that it is sufficient to transmit map information and location information only the first time in step S27, and from the second time onwards, only the position information may be transmitted.

[0056] The display system 10 can also present the location of the information terminal 40 to the user through the display operation example 2 described above. As described above, the disaster prevention lighting device 20 is equipped with the storage battery 23, and receives a beacon signal during a power outage using power supplied from the storage battery 23. Therefore, the display system 10 has the advantage of being able to present the location of the information terminal 40 to the user even during a power outage.

[0057] In the second example of the display operation, the map information and the location information may be stored in advance in the storage unit 46 of the information terminal 40. In this case, the information processing unit 45 of the information terminal 40 can measure the position of the information terminal 40 without transmitting signal strength information to the server device 50. In other words, the position of the information terminal 40 may be measured by the information terminal 40 instead of the server device 50.

[0058] [Inspection of disaster prevention lighting equipment] Next, the inspection operation of the disaster prevention lighting device 20 will be described. The disaster prevention lighting device 20 emits light using power obtained from the storage battery 23 during a power outage. In preparation for a power outage, the user needs to periodically inspect whether the disaster prevention lighting device 20 can emit light for a predetermined period or more using the storage battery 23. The predetermined period is, for example, 20 minutes if the disaster prevention lighting device 20 is an emergency light, and 30 minutes if the disaster prevention lighting device 20 is an emergency light. In other words, the predetermined period differs depending on the type of disaster prevention lighting device 20 (e.g., whether it is an emergency light or an emergency light). Note that a disaster prevention lighting device 20 that does not pass (fails) the inspection needs to have its storage battery 23 replaced.

[0059] This inspection is generally performed by operating a button or the like provided on the disaster prevention lighting device 20. The display system 10 can support the user in inspecting the disaster prevention lighting device 20 (approaching the disaster prevention lighting device 20 and operating a button or the like) by displaying the positions of the information terminal 40 and the disaster prevention lighting device 20 on a map.

[0060] Furthermore, a user of the display system 10 can use the information terminal 40 to instruct the disaster prevention lighting device 20 to inspect the storage battery 23 and display the inspection status of the disaster prevention lighting device 20. The following describes the inspection operation of such a disaster prevention lighting device 20. FIG. 7 is a sequence diagram of the inspection operation of the disaster prevention lighting device 20. Note that the following inspection operation is performed while the user is located on a certain floor of an actual building. Furthermore, it is assumed that the memory unit 46 of the information terminal 40 stores map information and location information, and the information processing unit 45 is in a state where it is possible to display the position of the disaster prevention lighting device 20 on the map.

[0061] The user performs an input (a predetermined operation) for wirelessly pairing the information terminal 40 and the disaster prevention lighting device 20, and the input receiving unit 41 receives such input (S31). The first communication unit 43 receives beacon signals from at least some of the multiple disaster prevention lighting devices 20 based on the received input (S32). As a result, the disaster prevention lighting device 20 and the information terminal 40 are wirelessly paired. Note that, as in the above-described example 2 of the display operation, in step S32, the wireless pairing may be achieved by the information terminal 40 transmitting a beacon signal.

[0062] Next, the information processing unit 45 transmits request information for acquiring the charge state of the storage battery 23 of the wirelessly paired disaster prevention lighting device 20 to each of the wirelessly paired disaster prevention lighting devices 20 (S33). More specifically, the request information is transmitted by the first communication unit 43 to each of the wirelessly paired disaster prevention lighting devices 20.

[0063] Each of the disaster prevention lighting devices 20 that have received the request information transmits information indicating the charging state of the storage battery 23 to the information terminal 40 in response to the request information (S34). The first communication unit 43 of the information terminal 40 receives the information indicating the charging state.

[0064] Next, the information processing unit 45 displays a list of the wirelessly paired disaster prevention lighting devices 20 on the map as indicated by the map information (S35). FIG. 8 is a diagram showing an example of an inspection screen on which the wirelessly paired disaster prevention lighting devices 20 are displayed. As shown in FIG. 8, in addition to the icon 42b of the disaster prevention lighting device 20, a battery-shaped icon 42c indicating the charging state is displayed on the map. Note that the position of the information terminal 40 may also be displayed on the map based on the above-described display operation example 1 (or display operation example 2).

[0065] Here, a required time from the start of charging of the storage battery 23 is set for the disaster prevention lighting device 20. To start inspection, the storage battery 23 must be charged for the required time or more (for example, a predetermined required time must have passed since the start of power supply from the system power supply to the disaster prevention lighting device 20). The required time is, for example, 48 hours.

[0066] Since the information indicating the charging state includes information indicating the time elapsed since charging of the storage battery 23 started, the information processing unit 45 can display the time remaining until the required time is fulfilled (corresponding to the remaining 6 hours in FIG. 8) as the charging state. Note that, as shown in FIG. 8, for a disaster prevention lighting device 20 whose storage battery 23 has been charged for more than the required time, the remaining required time is not displayed, and an icon indicating that the storage battery has been charged for more than the required time is displayed.

[0067] It is not essential that the remaining required time be displayed as the charging status. The information processing unit 45 may display one of two states as the charging status: whether or not the battery has been charged for the required time or more (whether or not inspection can be started). The information processing unit 45 may also display the elapsed time since charging started as the charging status.

[0068] Next, the input receiving unit 41 receives a selection input of the disaster prevention lighting device 20 to be inspected (S36). The selection input is, for example, a tap operation on the icon 42b indicating the disaster prevention lighting device 20 displayed on the map or the icon 42c indicating the charging state. In step S36, one or more disaster prevention lighting devices 20 are selected. Note that the icon 42b of a disaster prevention lighting device 20 for which the charging state requirements are not met or the icon 42c indicating the charging state of the disaster prevention lighting device 20 cannot be selected. In other words, the information processing unit 45 disables these icons.

[0069] Next, the input receiving unit 41 receives an input for starting the inspection (S37). When the input is received, the information processing unit 45 causes the first communication unit 43 to transmit an inspection command (S38).

[0070] The inspection command specifies the ID (MAC address, etc.) of the disaster prevention lighting device 20 selected in step S36. The inspection command is information for causing the disaster prevention lighting device 20 selected from the plurality of disaster prevention lighting devices 20 to inspect the storage battery 23.

[0071] When the disaster prevention lighting device 20 receives the inspection command, it starts the inspection (S40). Specifically, the disaster prevention lighting device 20 uses power supplied from the storage battery 23 to illuminate the light source 22 and monitors the output voltage of the storage battery 23. If the output voltage of the storage battery 23 is equal to or greater than a predetermined value when the predetermined period (e.g., 20 or 30 minutes) has elapsed, the disaster prevention lighting device 20 determines that the device has passed the inspection. If the output voltage of the storage battery 23 falls below a predetermined value before the predetermined period has elapsed, the disaster prevention lighting device 20 determines that the device has failed at that point in time. When the inspection result (determination of pass or fail) is determined, the disaster prevention lighting device 20 transmits information indicating the inspection result to the information terminal 40 (S41).

[0072] Meanwhile, after transmitting the inspection command, the information processing unit 45 of the information terminal 40 measures the time that has elapsed since the inspection command was transmitted (in other words, the time that has elapsed since the inspection started) and displays the measured elapsed time (S39). FIG. 9 is a diagram showing an example of an inspection screen on which the elapsed time is displayed. In the example of FIG. 9, the elapsed time is displayed near the icon 42b of the disaster prevention lighting device 20 in both the form of a time bar and numbers. The elapsed time may be displayed in at least one of the form of a time bar and numbers.

[0073] As described above, the length of the predetermined period differs depending on the type of disaster prevention lighting device 20. Therefore, the information processing unit 45 needs to identify the length of the predetermined period in order to display the time bar. For example, if a database indicating the correspondence between the type of disaster prevention lighting device 20 and the length of the predetermined period is stored in the storage unit 46, the information processing unit 45 can identify the length of the predetermined period based on the above-mentioned placement information (which includes information indicating the type of disaster prevention lighting device 20). Furthermore, if a database indicating the correspondence between the type of disaster prevention lighting device 20 and the length of the predetermined period (type of disaster prevention lighting device) is stored in the server device 50, the information processing unit 45 can identify the length of the predetermined period by inquiring about the length of the predetermined period (type of disaster prevention lighting device) from the server device 50.

[0074] Note that the elapsed time displayed in Figure 9 is the elapsed time from the start of inspection measured independently by the information processing unit 45 (i.e., an approximate time), and is different from the exact elapsed time from the start of inspection measured by the disaster prevention lighting device 20.

[0075] Furthermore, it is not essential that the elapsed time be displayed, and the information processing unit 45 may display the time remaining until the end of the inspection (more specifically, the time remaining assuming that the inspection will pass). To display the remaining time, the information processing unit 45 needs to identify the length of the predetermined period, and an example of a method for identifying the length of the predetermined period is the method using the database described above.

[0076] Thereafter, in step S41, when information indicating the inspection result is received by the first communication unit 43, the information processing unit 45 displays the inspection result based on the received information (S42). Fig. 10 is a diagram showing an example of the inspection screen on which the inspection result is displayed.

[0077] 10, the information processing unit 45 displays "pass" or "fail" near the icon 42b of the disaster prevention lighting device 20 for which the inspection has been completed, based on the received inspection result. If the inspection result is "fail," the information processing unit 45 may display the timing (elapsed time) at which the output voltage of the storage battery 23 fell below a predetermined value. If the information indicating the inspection result in the case of "fail" includes information indicating the timing (elapsed time) at which the output voltage of the storage battery 23 fell below a predetermined value, the information processing unit 45 can display the timing.

[0078] As described above, the display system 10 can use the information terminal 40 to trigger the start of an inspection of the disaster prevention lighting device 20 and display the inspection status of the disaster prevention lighting device 20 on the display unit 42 of the information terminal 40. The inspection status includes the progress of the inspection of the disaster prevention lighting device 20 (such as the elapsed time displayed in step S39) and the inspection result of the disaster prevention lighting device 20 (such as the word "pass" or "fail" displayed in step S42). Such a display system 10 can assist the user in inspecting the disaster prevention lighting device 20. Specifically, the display system 10 can assist the user in understanding the installation location of the disaster prevention lighting device 20 and the progress of the inspection of the disaster prevention lighting device 20, and in understanding the installation location of the disaster prevention lighting device 20 and the inspection result of the disaster prevention lighting device 20.

[0079] Even if the user carrying the information terminal 40 moves while the disaster prevention lighting device 20 is inspecting the storage battery 23 and the wireless pairing between the disaster prevention lighting device 20 and the information terminal 40 is canceled, the disaster prevention lighting device 20 continues inspecting the storage battery 23. In this case, the information processing unit 45 of the information terminal 40 stores the ID of the disaster prevention lighting device 20 whose wireless pairing was canceled during the inspection, and when wireless pairing with the disaster prevention lighting device 20 is established, the information processing unit 45 can obtain the inspection result by requesting the inspection result from the disaster prevention lighting device 20. In this way, the user of the display system 10 has the advantage of being able to obtain the inspection result without having to remain near the disaster prevention lighting device 20 during the inspection.

[0080] [Variations] In the above embodiment, the information processing unit 45 of the information terminal 40 displays the position of the information terminal 40 on the display unit 42 included in the information terminal 40. However, the information processing unit 45 may also display the position of another information terminal different from the information terminal 40 on the display unit 42. If the information terminal 40 is defined as a first information terminal and the other information terminal is defined as a second information terminal, the first information terminal may display the position of the first information terminal on the display unit 42, or may display the position of the second information terminal on the display unit 42. The first information terminal may display the position of the first information terminal and the position of the second information terminal on the display unit 42.

[0081] For example, server device 50 associates the location information of the second information terminal with the ID of the second information terminal and stores (manages) it in storage unit 53. Information processing unit 45 of the first information terminal (information terminal 40) can acquire the location information of the second information terminal by transmitting a request for location information specifying the ID of the second information terminal to server device 50, and can display the location of the second information terminal indicated by the acquired location information on display unit 42.

[0082] The display system 10 may display the location of a beacon transceiver specialized in transmitting or receiving beacon signals instead of an information terminal such as the first information terminal or the second information terminal. That is, the display system 10 may display the location of a communication device such as the beacon transceiver, the first information terminal, or the second information terminal. Each of the beacon transceiver, the first information terminal, and the second information terminal is an example of a communication device.

[0083] Furthermore, in the above embodiment, the map on which the position of the information terminal 40 is superimposed is described as being used for inspecting the disaster prevention lighting device 20, but it may also be used for other purposes. As described above, the display system 10 can display the position of the information terminal 40 even during a power outage. Therefore, the map displayed on the display unit 42 can also be used, for example, when a user evacuates during a power outage. When used for such a purpose, a predetermined evacuation route may be displayed on the map. In this case, information indicating the evacuation route (information for displaying the evacuation route on the map) is included, for example, in the map information.

[0084] Furthermore, as described above, the display system 10 can display the location of the second information terminal on the display unit 42 of the first information terminal. Such a display system 10 can support rescue operations by displaying the location of the second information terminal of the person to be rescued on the first information terminal of the person performing rescue operations during a power outage.

[0085] Furthermore, the display system 10 may include general lighting fixtures that do not emit light during a power outage instead of the disaster prevention lighting fixtures 20, and measure the position of the information terminal 40 based on the state of wireless communication between the information terminal 40 and the general lighting fixtures. That is, the disaster prevention lighting fixtures 20 in the above embodiment may be appropriately replaced with general lighting fixtures. Furthermore, the display system 10 may include a mixture of disaster prevention lighting fixtures 20 and general lighting fixtures.

[0086] [Effects, etc.] As described above, the display system 10 includes an information processing unit 45 that displays on the display unit 42 the position of a communication device measured based on the communication status of wireless communication between the communication device located in a space 60 within the building and each of a plurality of lighting fixtures installed in the space 60, superimposed on a map of the space 60.

[0087] Such a display system 10 can present the location of a communication device in a space 60 to a user.

[0088] Furthermore, for example, the information processing unit 45 displays on the display unit 42 the position of at least one of the plurality of lighting fixtures in addition to the measured position of the communication device, superimposed on the map.

[0089] Such a display system 10 can present the location of communication devices and lighting fixtures in a space 60 to a user.

[0090] Furthermore, for example, the communication device is an information terminal 40 equipped with a display unit 42.

[0091] Such a display system 10 can present the position of the information terminal 40 in the space 60 to the user holding the information terminal 40 .

[0092] Also, for example, the display unit 42 is provided by the information terminal 40, and the communication device is another information terminal different from the information terminal 40.

[0093] Such a display system 10 can present the positions of other information terminals in the space 60 to the user holding the information terminal 40 .

[0094] Also, for example, the position of the communication device is measured based on the received signal strength at the communication device of the beacon signal transmitted by each of the plurality of lighting fixtures.

[0095] Such a display system 10 can present to a user the location of a communication device in space 60 based on the signal strength at the communication device of the beacon signals transmitted by each of a plurality of lighting fixtures.

[0096] Furthermore, for example, each of the plurality of lighting fixtures is a disaster prevention lighting fixture 20 equipped with a storage battery 23, and transmits a beacon signal using power supplied from the storage battery 23 during a power outage.

[0097] Such a display system 10 can present the location of the communication device in the space 60 to the user even during a power outage.

[0098] Also, for example, the location of the communication device is measured based on the received signal strength of the beacon signal transmitted by the communication device at each of the plurality of lighting fixtures.

[0099] Such a display system 10 can present to a user the location of a communication device in space 60 based on the received signal strength at each of a plurality of lighting fixtures of a beacon signal transmitted by the communication device.

[0100] Furthermore, for example, each of the plurality of lighting fixtures is a disaster prevention lighting fixture 20 equipped with a storage battery 23, and receives a beacon signal using power supplied from the storage battery 23 during a power outage.

[0101] Such a display system 10 can present the location of the communication device in the space 60 to the user even during a power outage.

[0102] Furthermore, for example, at least one of the plurality of lighting fixtures is a disaster prevention lighting fixture 20 equipped with a storage battery 23, and the information processing unit 45 displays the position of the disaster prevention lighting fixture 20 and the progress of the inspection on a map.

[0103] Such a display system 10 can present the location of the disaster prevention lighting fixture 20 and the progress of the inspection to the user.

[0104] Also, for example, at least one of the plurality of lighting fixtures is a disaster prevention lighting fixture 20 equipped with a storage battery 23, and the information processing unit 45 displays the position and inspection results of the disaster prevention lighting fixture 20 on a map.

[0105] Such a display system 10 can present the location and inspection results of the disaster prevention lighting fixtures 20 to the user.

[0106] Also, a display method executed by a computer such as the display system 10 displays on the display unit 42 the position of a communication device measured based on the communication status of wireless communication between the communication device located in a space 60 within a building and each of a plurality of lighting fixtures installed in the space 60, superimposed on a map of the space 60.

[0107] Such a display method can present the location of the communication device in the space 60 to the user.

[0108] (Other embodiments) Although the embodiments have been described above, the present invention is not limited to the above-described embodiments.

[0109] For example, in the above embodiment, the display system is realized by a plurality of devices. When the display system is realized by a plurality of devices in this way, the components (particularly functional components) of the display system may be distributed in any way among the plurality of devices. For example, some or all of the functions provided by the information processing unit of the information terminal may be provided by the server device. In other words, the information processing unit may be provided by the server device.

[0110] The display system may also be realized as a single device. For example, the display system may be realized as a single device corresponding to an information terminal.

[0111] For example, the communication method between the devices in the above-described embodiments is not particularly limited. Furthermore, a relay device (such as a broadband router) (not shown) may be involved in the communication between the devices.

[0112] In the above-described embodiment, the processing performed by a specific processing unit may be performed by another processing unit. The order of multiple processing operations may be changed, or multiple processing operations may be performed in parallel.

[0113] In the above-described embodiments, each component may be realized by executing a software program suitable for that component, or by a program execution unit such as a CPU or processor reading and executing a software program recorded on a recording medium such as a hard disk or semiconductor memory.

[0114] Furthermore, each component may be realized by hardware. For example, each component may be a circuit (or integrated circuit). These circuits may form a single circuit as a whole, or each may be a separate circuit. Furthermore, each of these circuits may be a general-purpose circuit or a dedicated circuit.

[0115] Furthermore, the general or specific aspects of the present invention may be realized as a system, an apparatus, a method, an integrated circuit, a computer program, or a computer-readable recording medium such as a CD-ROM, or as any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.

[0116] For example, the present invention may be realized as the display system or information terminal of the above-described embodiments, or as an information processing method or display method executed by a computer such as a display system (information terminal). The present invention may be realized as a program for causing a computer to execute such an information processing method or display method, or as a non-transitory recording medium on which such a program is recorded. Such a program includes an application program for causing a general-purpose information terminal (computer) to function as the information terminal of the above-described embodiments.

[0117] In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art would think of, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope that does not deviate from the spirit of the present invention. [Explanation of symbols]

[0118] 10 Display System 20 Disaster prevention lighting equipment 21 Radio Communication Department 22 Light source 23 Storage battery 40 Information terminal 41 Input reception section 42 Display section 42a Icon 42b Icon 42c Icon 43 First Communications Department 44 Second Communications Department 45 Information Processing Department 46 Memory section 50 Server device 51 Communications Department 52 Measurement processing section 53 Memory section 60 space

Claims

1. an information processing unit that displays, on a display unit, a position of a communication device located in a space within a building, the position of the communication device being measured based on a communication state of wireless communication between the communication device and each of a plurality of lighting fixtures installed in the space, superimposed on a map of the space; At least one of the plurality of lighting fixtures is a disaster prevention lighting fixture equipped with a storage battery, The information processing unit displays the location of the disaster prevention lighting device and the progress of the inspection on the map, The map displays the progress of the inspection, such as the time elapsed since the inspection started or the time remaining until the inspection is completed. Display system.

2. The information processing unit displays, on the display unit, the position of at least one of the plurality of lighting devices in addition to the measured position of the communication device superimposed on the map. The display system of claim 1 .

3. The communication device is an information terminal having the display unit.

3. A display system according to claim 1 or 2.

4. the display unit is provided by an information terminal, The communication device is an information terminal different from the information terminal.

3. A display system according to claim 1 or 2.

5. The location of the communication device is measured based on the received signal strength at the communication device of a beacon signal transmitted from each of the plurality of lighting fixtures. A display system according to any one of claims 1 to 4.

6. Each of the plurality of lighting fixtures is a disaster prevention lighting fixture equipped with a storage battery, and transmits the beacon signal using power supplied from the storage battery during a power outage. The display system of claim 5 .

7. The location of the communication device is measured based on the received signal strength of a beacon signal transmitted by the communication device at each of the plurality of lighting fixtures. A display system according to any one of claims 1 to 4.

8. Each of the plurality of lighting fixtures is a disaster prevention lighting fixture equipped with a storage battery, and receives the beacon signal using power supplied from the storage battery during a power outage. The display system of claim 7.

9. The information processing unit displays the location and inspection results of the disaster prevention lighting device on the map. A display system according to any one of claims 1 to 8.

10. 1. A computer-implemented display method comprising: a step of displaying, on a display unit, the position of a communication device measured based on a communication state of wireless communication between a communication device located in a space within a building and each of a plurality of lighting fixtures installed in the space, superimposed on a map of the space; At least one of the plurality of lighting fixtures is a disaster prevention lighting fixture equipped with a storage battery, The display method further includes a display step of displaying the positions of the disaster prevention lighting devices and the progress of the inspection on the map, In the display step, the progress of the inspection is displayed on the map in the form of the elapsed time since the inspection started or the remaining time until the inspection is completed. Display method.

11. A program for causing a computer to execute the display method according to claim 10.

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