Information display system and information display method

Abstract

To provide an information display system and an information display method capable of preventing the oversight of restoring the changed switch state for elevator inspection work.SOLUTION: A CPU 111 acquires a first image captured by a camera 115 at a first timing before starting the inspection work of an elevator. The CPU 111 extracts the state of switches 61-74 from the first image as a first switch state. The CPU 111 acquires a second image captured by the camera 115 at a second timing after the first timing. The CPU 111 extracts the state of the switches 61-74 from the second image as a second switch state. The CPU 111 extracts information on a switch with varying states between the first switch state and the second switch state. A display 121 displays the information on the switch with varying states.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present disclosure relates to an information display system and an information display method for displaying information from a plurality of switches arranged inside an elevator car. [Background technology]

[0002] Elevator cars are equipped with multiple switches for changing elevator operation. The state of these switches is changed as needed by the owner or manager of the building in which the elevator is installed, depending on the operational status of the building. Maintenance personnel inspecting the elevator change the switch states for inspection work before starting the inspection, and then return the switch states to their original state when the inspection is completed.

[0003] Previously, maintenance personnel would visually check the switch status before inspection work and make a note of it. After the inspection work, they would return the switch to its original state based on the note. However, there was a possibility that the switch would be forgotten to be returned to its original state due to mistakes in writing or checking the note. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-162380 Summary of the Invention [Problem to be solved by the invention]

[0005] To prevent the above-mentioned mistakes, the switch state was photographed with a camera before the inspection work, and after the inspection, the switch state was returned to its original state while looking at the photographed image. However, even if the switch state was returned to its original state while looking at the image, it was not necessarily possible to prevent forgetting to return the switch state because it was a visual inspection.

[0006] The present disclosure has been made to solve the above-mentioned problems, and its purpose is to provide an information display system and an information display method that can prevent forgetting to return a switch state that has been changed for elevator inspection work. [Means for solving the problem]

[0007] An information display system according to the present disclosure displays information about multiple switches arranged in an elevator car. The information display system includes a camera, a processing unit, and a display unit. The camera captures images of the multiple switches. The processing unit processes the images of the multiple switches captured by the camera. The display unit displays information about the multiple switches. Each of the multiple switches is a switch for switching the operation of the elevator. The processing unit acquires a first image captured by the camera at a first timing before the start of elevator inspection work. The processing unit extracts the states of the multiple switches as first switch states from the first image. The processing unit acquires a second image captured by the camera at a second timing after the first timing. The processing unit extracts the states of the multiple switches as second switch states from the second image. The processing unit extracts information about switches whose states differ between the first switch state and the second switch state. The display unit displays information about the switches whose states differ.

[0008] The information display method according to the present disclosure is an information display method for displaying information about multiple switches arranged in an elevator car. The information display method includes the steps of capturing images of the multiple switches with a camera, processing the images of the multiple switches captured by the camera, and displaying information about the multiple switches. Each of the multiple switches is used to switch the elevator's operation. The processing step includes the steps of acquiring a first image captured by the camera at a first timing before the start of elevator inspection work, extracting the states of the multiple switches from the first image as first switch states, acquiring a second image captured by the camera at a second timing after the first timing, extracting the states of the multiple switches from the second image as second switch states, and extracting information about switches whose states differ between the first switch state and the second switch state. The displaying step displays the information about the switches whose states differ. [Effects of the Invention]

[0009] According to the present disclosure, it is possible to prevent forgetting to return a switch state that has been changed for elevator inspection work. [Brief explanation of the drawings]

[0010] [Figure 1] 10 is a diagram for explaining an image of a car operating panel taken by a terminal inside the car in the present embodiment. FIG. [Figure 2] FIG. 10 is a diagram for explaining an example of a switch state before the start of inspection work. [Figure 3] FIG. 10 is a diagram for explaining an example of a switch state after inspection work is completed. [Figure 4] FIG. 1 is a diagram illustrating an example of a hardware configuration of an information display system. [Figure 5] FIG. 1 is a diagram illustrating an example of a functional block diagram of an information display system. [Figure 6] 10 is a flowchart of a main process. [Figure 7] 10 is a flowchart of a display process. [Figure 8] 10A and 10B are diagrams for explaining editing of switch names and display of switch states in the information display system. [Figure 9] FIG. 10 is a diagram for explaining the display of switch states in the information display system. [Figure 10] 10 is a flowchart of a history display process. [Figure 11] FIG. 10 is a diagram for explaining a display of a history of switch states in the information display system. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. The names and functions of these components are also the same. Therefore, detailed descriptions thereof will not be repeated.

[0012] 1 is a diagram for explaining the capturing of an image of a car operating panel 150 by a terminal 100 in a car 10 in this embodiment. The terminal 100 is a terminal included in an information display system 1 (see FIG. 4) described later.

[0013] In this embodiment, the terminal 100 is a smartphone used by a maintenance worker 52. The maintenance worker 52 performs elevator inspection work, and the terminal 100 is used during the inspection work. In Fig. 1, the maintenance worker 52 is in an elevator car 10 and is using the terminal 100 inside the car 10 to capture an image of a car operating panel 150.

[0014] In this embodiment, it is assumed that the building in which the elevator is installed is four stories tall. A door 160, a car operating panel 150, and the like are provided inside the car 10. The car operating panel 150 is provided with buttons, switches, and the like for operating the elevator. Specifically, the car operating panel 150 is provided with a door open button 152 for opening the door 160, a door close button 153 for closing the door 160, and a car call button for registering destination floors (car calls) from the 1st to 4th floors.

[0015] The car call buttons include a 1F call button 161 for registering a car call for 1F, a 2F call button 162 for registering a car call for 2F, a 3F call button 163 for registering a car call for 3F, and a 4F call button 164 for registering a car call for 4F. The car operation panel 150 is also provided with an indicator 151 that displays the running direction of the car 10 and the running floor or stopping floor. The running direction indicates an upward direction (also referred to as the "UP direction") or a downward direction (also referred to as the "DN direction").

[0016] Furthermore, the car operating panel 150 is provided with a switch box 40. In FIG.

[0017] Fig. 2 is a diagram illustrating an example of the switch state before the start of inspection work. As shown in Fig. 2, a plurality of switches 61 to 74 are arranged inside the switch box 40. Each of the plurality of switches 61 to 74 is a switch for switching the operation of the elevator (elevator function, operation mode, option settings, etc.). These switches are attached inside the switch box 40, and can be operated by opening the doors of the switch box 40.

[0018] 2 shows the interior of the switch box 40 as seen from approximately the front. Switches 61 to 71 are attached to the front side. Meanwhile, switches 72 to 74 are attached to the left side surface 40a inside the switch box 40.

[0019] The switches 61 to 74 in this embodiment are wave switches. The switches 61 to 74 are in an ON state when their upper portions are pressed in and their lower portions protrude further from the installation surface than their upper portions. On the other hand, the switches 61 to 74 are in an OFF state when their lower portions are pressed in and their upper portions protrude further from the installation surface than their lower portions. However, the present invention is not limited to this, and the switches may be in an ON state when a protrusion is pushed up and in an OFF state when the protrusion is pushed down.

[0020] Furthermore, the switches 61 to 74 are not limited to those described above and may be switches of any shape. For example, the switches 61 to 74 may be toggle switches, rotary switches, or key switches. Furthermore, the switches may be ones that indicate an ON or OFF state by the lighting state of a lamp. The switch state is not limited to two states, an ON state and an OFF state, but may be one that has multiple states and is switchable between these multiple states.

[0021] A plurality of switches 61 to 74 are arranged on the car operating panel 150, and a plurality of switch names are written corresponding to the plurality of switches 61 to 74. In this embodiment, the switch 61 is also referred to as a lighting switch. The word "light" is written on the top of the switch 61 as the switch name of the lighting switch. The word "off" may be written on the bottom of the switch 61 to indicate that the switch is in the OFF state.

[0022] The lighting switch is a switch for switching the lighting provided in the car 10 between ON and OFF. When the lighting switch is in the ON state, the lighting in the car 10 is in the ON state, and when the lighting switch is in the OFF state, the lighting in the car 10 is in the OFF state. In this example, the switch 61 is in the ON state. Alternatively, a switch that turns on an illumination lamp provided in the car 10 may be installed.

[0023] The switch 62 is also referred to as a FAN switch. The letters "FAN" are written on the top of the switch 62 as the switch name of the FAN switch. The FAN switch is a switch for switching the fan provided in the car 10 between ON and OFF. When the FAN is in the ON state, the fan of the car 10 is in the ON state, and when the FAN switch is in the OFF state, the fan of the car 10 is in the OFF state. In this example, the switch 61 is in the ON state.

[0024] The switch 63 is a switch for switching the operation of the car 10 between automatic operation and manual operation. When set to automatic operation, the car 10 can respond to hall calls from the hall or car calls inside the car. When set to manual operation, the car 10 does not respond to these calls, and can be moved in the UP direction or DN direction by operation of the maintenance worker 52 during inspection work.

[0025] The word "automatic" is written on the top of the switch 63, indicating that automatic operation is ON. The word "manual" is written on the bottom of the switch 63, indicating that manual operation is ON. In this example, this indicates that the car 10 is in automatic operation (when the top of the switch is pressed in, manual operation is OFF and automatic operation is ON). When the switch 63 is switched, the car 10 goes into manual operation (when the bottom of the switch is pressed in, manual operation is ON and automatic operation is OFF).

[0026] The switches 64 to 71 are also referred to as switches X1 to X8, respectively, and have the letters X1 to X8 indicating the switch names written above them. In this example, the switches 64 to 67 and 70 are in the ON state, and the switches 68, 69 and 71 are in the OFF state.

[0027] The switches 72 to 74 are also referred to as switches Y1 to Y3, respectively, and have the letters Y1 to Y3 indicating the switch names written above them. In this example, the switches 72 and 73 are in the ON state, and the switch 74 is in the OFF state.

[0028] For example, switches 64 to 67 may be switches for setting floor stops. In this case, X1 to X4 are respectively assigned the letters "1F" to "4F." When a switch is in the ON state, the train can stop at the floor corresponding to the switch, and when the switch is in the OFF state, the train cannot stop at the floor corresponding to the switch (this state is also called "service disconnected" or "service cut").

[0029] For example, when switch 65 is turned on, car 10 can stop at the second floor, but when switch 65 is turned off, the second floor is put into a service cut state, and car 10 cannot stop at the second floor. Note that a destination button (car call button) may be operated to set a service cut at a specified floor (in this case, the car call button lamp may be turned on to indicate the service cut floor).

[0030] Here, the switch states of the multiple switches 61 to 74 before the start of elevator inspection work indicate the states set by the owner or manager of the building in which the elevator is installed (hereinafter referred to as the "building manager, etc."). When elevator inspection work is performed, it is necessary to change the switch states for the inspection work.

[0031] For example, in a facility such as a hospital, if entry to the second floor is temporarily prohibited, the facility manager sets switch 65 to the OFF state to cut off service to the second floor. However, when performing elevator inspection work, this service cut setting is cleared to allow car 10 to stop at each floor. Then, after the inspection work is completed, the switch states of multiple switches 61 to 74 must be returned to the settings originally set by the building manager, etc. At that time, service to the second floor is again cut off.

[0032] In the example of Fig. 2, before the start of inspection work, switches 61 to 67, 70, 72, and 73 are in the ON state. Fig. 3 is a diagram for explaining an example of the switch states after the inspection work is completed. In contrast, as shown in Fig. 3, after the inspection work is completed, switches 61 to 67 and 72 are in the ON state. In this example, maintenance worker 52 forgets to return switch 70 (X7 switch) and switch 73 (Y2 switch) from the OFF state to the ON state.

[0033] The settings of the multiple switches 61 to 74 are changed as appropriate by the building manager or the like depending on the operational status of the building. Therefore, the maintenance person 52 cannot know how these switches are set without actually looking at the switches 61 to 74.

[0034] In the past, maintenance personnel 52 would visually check the switch state before inspection work and make a note of it. Then, after the inspection work, they would return the switch to its original state based on the note. However, there was a possibility that the switch would be forgotten to be returned to its original state due to mistakes in writing or checking the note.

[0035] In order to prevent the above-mentioned mistakes, the switch box 40 is photographed with a camera before maintenance inspection, and after the maintenance inspection, the switches are returned to their original states while looking at the photographed image. However, even if the switches are returned to their original states while looking at the image, it is not always possible to prevent forgetting to return the switches to their original states because it is a visual inspection. In this embodiment, a configuration is provided that can more reliably prevent forgetting to return the switches to their original states. The method of this embodiment will be described below.

[0036] Fig. 4 is a diagram showing an example of the hardware configuration of the information display system 1. As shown in Fig. 4, the information display system 1 is made up of the terminal 100 (a smartphone in this embodiment) described in Fig. 1, and a server 200. The terminal 100 and the server 200 are capable of communicating with each other.

[0037] The information display system 1 is a device that displays information of a plurality of switches 61 to 74 arranged in an elevator car 10. The plurality of switches 61 to 74 are arranged in a switch box 40 provided on a car operating panel 150 in the car 10.

[0038] The terminal 100 includes a CPU (Central Processing Unit) 111, a ROM (Read Only Memory) 112, a RAM (Random Access Memory) 113, a storage unit 114, a camera 115, a communication interface 120, a display unit 121, and an input unit 122. These are connected to each other via a bus so that they can communicate with each other.

[0039] The CPU 111 loads a program stored in the ROM 112 into the RAM 113 and executes it to realize various functions of the terminal 100. The ROM 112 stores a program in which the processing procedures of the terminal 100 are written.

[0040] The RAM 113 serves as a work area when the CPU 111 executes a program, and temporarily stores the program, data used when the program is executed, and the like.

[0041] The storage unit 114 is a non-volatile storage device. The storage unit 114 may be, for example, a hard disk drive (HDD) or a solid state drive (SSD). The input unit 122 accepts input from a user. The input unit 122 is, for example, a touch panel, but may also be a keyboard or a mouse. The display unit 121 displays various information (for example, displays information from a plurality of switches 61 to 74). The display unit 121 is, for example, a liquid crystal display or a display.

[0042] The camera 115 of the terminal 100 constituting the information display system 1 captures images of the multiple switches 61 to 74. The terminal 100 can be connected to the server 200 via the communication interface 120. For example, the server 200 is a server managed by the maintenance company to which the maintenance worker 52 belongs. By connecting to the server 200, the terminal 100 can access various information related to elevator inspection work.

[0043] The server 200 includes a CPU 211 as a processing unit, a ROM 212, a RAM 213, a storage unit 214, and a communication interface 220. These are connected via a bus so as to be able to communicate with each other.

[0044] The CPU 211 loads programs stored in the ROM 212 into the RAM 213 and executes them to realize various functions of the server 200. The ROM 212 stores programs in which processing procedures for the server 200 are written. The RAM 213 serves as a work area when the CPU 211 executes the programs, and temporarily stores the programs, data used for executing the programs, and the like. The storage unit 214 is a non-volatile storage device. The storage unit 214 may be, for example, an HDD, an SSD, or the like.

[0045] The server 200 can be connected to the terminal 100 via the communication interface 220. For example, the terminal 100 may access the server 200 via a browser by specifying a predetermined URL. Alternatively, the terminal 100 may start an application pre-installed on the terminal 100 and access the server 200 from this application.

[0046] In this embodiment, terminal 100 transmits images of multiple switches 61-74 captured by camera 115 to server 200. CPU 211 of server 200 processes the images transmitted from terminal 100 and transmits the results to terminal 100 as information on the multiple switches 61-74. Then, display unit 121 of terminal 100 displays the information on the multiple switches 61-74.

[0047] That is, the information display system 1 is configured such that an image of a switch taken by the camera 115 of the terminal 100 is processed by the CPU 211 of the server 200 and the processing result is displayed on the display unit 121 of the terminal 100.

[0048] The information display system 1 is not limited to the above configuration, and may be configured to include only the terminal 100. In this case, the processing executed by the CPU 211 of the server 200 may be executed by the CPU 111 of the terminal 100.

[0049] For example, an application for performing image processing of the plurality of switches 61 to 74 may be installed in advance in the terminal 100, and the application may be started. The information display system 1 (terminal 100) is configured so that the CPU 111 of the terminal 100 processes the image of the switches photographed by the camera 115, and the processing result is displayed on the display unit 121 of the terminal 100.

[0050] 5 is a diagram showing an example of a functional block diagram of the information display system 1. The information display system 1 includes an acquisition unit 131, an extraction unit 132, and a comparison unit 133. Below, an overview of the processing executed by the information display system 1 will be explained. This processing may be realized using the terminal 100 and the server 200, or may be realized using only the terminal 100.

[0051] The camera 115 captures images of the multiple switches 61 to 74 arranged in the switch box 40 of the car operating panel 150. The acquisition unit 131 acquires the images captured by the camera 115.

[0052] The extraction unit 132 extracts the switch states (whether they are ON or OFF) of the switches 61 to 74 from the images acquired by the acquisition unit 131. The storage unit 214 stores the extracted switch states. The acquisition unit periodically acquires images captured by the camera 115, and the extraction results extracted from the images are stored in the storage unit 214.

[0053] The storage unit 214 stores the switch state before the inspection work. The comparison unit 133 then compares the switch state extracted based on the image currently acquired from the camera 115 with the switch state before the inspection work.

[0054] The display unit 121 displays the comparison result by the comparison unit 133. In the example of FIGS. 2 and 3, switches X7 and Y2 were in the ON state before the inspection work, but were forgotten to be returned to their original state, and X7 and Y2 are in the OFF state after the inspection work. For this reason, in this embodiment, the display unit 121 is configured to display in red the images corresponding to X7 and Y2 that were forgotten to be returned to their original state. This will be described in detail below using a flowchart.

[0055] 6 is a flowchart of the main processing. The information display system 1 executes the main processing. For example, the main processing may be started by starting an application installed on the terminal 100. Hereinafter, "step" may also be simply referred to as "S."

[0056] The maintenance worker 52 starts the application and points the camera 115 of the terminal 100 at (takes a photograph of) the switch box 40 as shown in Fig. 1. For example, it is assumed that the states of the switches at this time are as shown in Fig. 2.

[0057] 6, when the main processing starts, in S101, the information display system 1 (CPU 211 of the information display system 1) acquires a first image from the camera 115. The first image is an image captured by the camera 115 at a first timing before the start of the elevator inspection work, as shown in FIG.

[0058] In S102, the information display system 1 extracts the states of the switches 61 to 74 from the first image as first switch states. For example, in the example of Fig. 2, switches 61 to 67, 70, 72, and 73 are extracted as being in the ON state, and the other switches are extracted as being in the OFF state.

[0059] The switch state can be extracted using known image processing techniques. For example, the area corresponding to the switch (for example, the black area for a black switch) is extracted from the image, and processing is performed so that the protruding lower part of each extracted image is recognized as the ON state, and the protruding upper part is recognized as the OFF state. Note that if the ON / OFF state of the switch cannot be recognized because it was photographed from directly in front, the maintenance person 52 may change the camera position and display (instruct) on the application to photograph from an oblique angle.

[0060] In S103, the information display system 1 determines whether or not a switch name has been set. Specifically, it determines whether or not a switch name that has been set in the past is stored in the storage unit 214.

[0061] If the information display system 1 determines that the switch name is set (YES in S103), the process proceeds to S105. On the other hand, if the information display system 1 does not determine that the switch name is set (NO in S103), the process proceeds to S104.

[0062] In S105, the information display system 1 reads the switch names from the storage unit 214, and proceeds to S107. On the other hand, in S104, the information display system 1 extracts all switch names from the first image, and proceeds to S106.

[0063] 8 is a diagram for explaining the editing of switch names and the display of switch states in information display system 1. When maintenance worker 52 is taking an image with camera 115 at a first timing before starting elevator inspection work, a screen such as that shown in FIG.

[0064] The first image (the image in FIG. 2) is displayed on the left side of the screen. Along with this, numbers 1 to 14 are assigned to the switches in the first image so that each switch extracted in S102 can be identified. For example, the light switch is assigned the number "1," and the fan switch is assigned the number "2."

[0065] On the right side of the screen, the name of the building where the elevator is installed, "ABC Building," is displayed, along with a message indicating the state of each switch before the start of inspection work. The screen also displays, "Switch name has been read. If the name cannot be read or is incorrect, please enter the switch name."

[0066] Furthermore, the screen displays today's date, "2021 / 2 / 1," along with the number of each switch, the switch name corresponding to the number, and the switch status. The switch status displayed is the first switch status extracted in S102.

[0067] The switch names displayed are the switch names read from the storage unit 214 in S105 or the switch names extracted from the first image in S104. The switch names may be extracted using a known technique for extracting text information from an image.

[0068] For example, in the case of number "1," the switch name "Light" and the switch state "ON" are displayed. In the case of number "2," the switch name "FAN" and the switch state "ON" are displayed. In the case of number "3," the switch name "Auto" and the switch state "ON" and the switch name "Manual" and the switch state "OFF" are displayed (i.e., it is indicated that the switch is set to the automatic driving side).

[0069] In this example, the switch names of switches Y1 to Y3 corresponding to numbers "12" to "14" were not extracted from the first image. As shown in FIG. 2, the names of these switches are written on the side of switch box 40. For this reason, maintenance person 52 may change the position of camera 115 to a position where the switch names of switches Y1 to Y3 can be read, and then have the switch names extracted again.

[0070] Furthermore, the user can change the extracted switch names using the input unit 122. In this example, the maintenance technician 52 can use the input unit 122 to input that the switch name corresponding to the number "12" is "Y1," the switch name corresponding to the number "13" is "Y2," and the switch name corresponding to the number "14" is "Y3."

[0071] In addition, in the case of the number 9, the switch name corresponding to the number "9" is "X6," but it is erroneously extracted as "X8" from the first image. Therefore, the maintenance person 52 can use the input unit 122 to change the switch name corresponding to the number "9" to "X8."

[0072] In this way, in S106, the information display system 1 changes the switch name if there is user input from the maintenance technician 52, and proceeds to S107. In S107, the information display system 1 stores the first switch state and the switch name in the storage unit 214. Note that when the "Exit" button is clicked, the application ends.

[0073] Furthermore, in S108, the information display system 1 determines whether a predetermined time (for example, 100 msec) has elapsed. If the information display system 1 determines that the predetermined time has elapsed (YES in S108), the process proceeds to S109. On the other hand, if the information display system 1 does not determine that the predetermined time has elapsed (NO in S108), the process returns to S108.

[0074] In S109, the information display system 1 acquires a second image from the camera 115. That is, the second image is an image captured by the camera 115 at a second timing that is later than the first timing. Furthermore, as shown in S108 to S113, the information display system 1 acquires the second image every time a predetermined time period elapses. For example, the second timing may be after the inspection work is completed, may be during the inspection work, or may be any timing.

[0075] In S110, the information display system 1 extracts the states of the switches 61 to 74 from the second image as second switch states.

[0076] In S111, the information display system 1 extracts information about switches whose states are different in the second switch state from the first switch state (extracts information about switches whose states are different between the first switch state and the second switch state). That is, every time the information display system 1 acquires a second image, it extracts the second switch state and information about switches whose states are different.

[0077] In S112, the information display system 1 executes the display process (see FIG. 7). In S113, the information display system 1 determines whether or not the end button has been clicked. If the information display system 1 determines that the end button has been clicked (YES in S113), it ends the main process. On the other hand, if the information display system 1 does not determine that the end button has been clicked (NO in S113), it returns the process to S108.

[0078] Fig. 7 is a flowchart of the display process. As shown in Fig. 7, when the display process starts, the information display system 1 determines in S201 whether or not there are any switches with different states. If the information display system 1 determines that there are any switches with different states (YES in S201), the process proceeds to S202. On the other hand, if the information display system 1 does not determine that there are any switches with different states (NO in S201), the process proceeds to S24.

[0079] That is, the information display system 1 can extract switches that have changed from the switch state before the start of the inspection work by comparing the first switch state with the second switch state (the first image with the second image).

[0080] In S202, the information display system 1 changes the color of switches in different states in the second image to red. In S203, the information display system 1 displays information about the switches in different states (for example, the switch name and the switch state before and after inspection) and a warning message. In S204, the information display system 1 displays the first switch state together with the switch name. In S205, the information display system 1 displays the second image and ends the display process. A specific example will be described below using FIG. 9.

[0081] Fig. 9 is a diagram for explaining the display of switch states in the information display system 1. In the example of Fig. 9, the display unit 121 of the terminal 100 displays information regarding the differences in the multiple switches 61 to 73 before and after inspection work. The display unit 121 indicates that the building in which the car 10 is installed is the "ABC Building."

[0082] The display unit 121 displays a second image in which the colors of the switches in different states have been changed to a specific color (for example, red). On the left side of the display unit 121, in an image of the switches 61 to 73, the images corresponding to the switches X7 and Y2 are displayed in red. This indicates that the states of the switches X7 and Y2 before the work started are different from their current states.

[0083] If there are switches whose states are different, the display unit 121 displays a warning message to that effect. The right side of the display unit 121 displays a message saying, "The following switches are different before and after the work."

[0084] As information about the switches whose states are different, the display unit 121 displays the switch name of the switch and the state of the switch extracted from the first image and the second image. In this example, it is shown that the X7 switch is in the ON state before the work starts, the X7 switch is in the OFF state after the work ends, the Y2 switch is in the ON state before the work starts, and the Y2 switch is in the OFF state after the work ends.

[0085] The switch states before work begins are displayed as a list on the right side of the display unit 121. It is shown that before work begins, the lighting switch, FAN switch, X1 to X4, X7, and Y2 switches are in the ON state, the car 10 is in automatic operation, and the other switches are in the OFF state. In addition, switches that are different before and after work begins (X7 and Y2 switches) are displayed so that they can be identified.

[0086] With the above configuration, it is clear at a glance which switches have been forgotten to be reset before and after the work. The maintenance person 52 can return to the state before the work by switching the switches displayed in red.

[0087] Furthermore, since the information display system 1 compares the first image and the second image at predetermined time intervals, if the maintenance person 52 keeps the image captured by the camera 115, it is possible to check the differences between the switches in real time. For example, in the state shown in FIG. 9, when the maintenance person 52 switches the switch Y2, the switch Y2 is no longer displayed in red, and when the maintenance person 52 switches the switch X7, the switch X7 is no longer displayed in red. In this way, by switching the switches while capturing images with the camera 115 until the red image disappears, it is possible to return the switches to the state they were in before the work was performed.

[0088] In the example of Figure 9, the difference in switch state before work begins and after work ends is displayed, but it is not limited to this and the difference in switch state before work begins and at any timing can also be displayed. For example, if the difference in switch state before work begins and during work is displayed, it becomes clear at a glance which switches were changed during the inspection work.

[0089] In this way, every time information about a switch in a different state is extracted, the display unit 121 displays the second image in which the color of the switch in the different state is changed to a specific color (for example, red).

[0090] Next, the history display process will be described. As shown in S107 of Fig. 6, the storage unit 214 stores the history of the first switch state together with the switch name every time the maintenance person 52 starts inspection work. Then, the display unit 121 can display the history of the first switch state.

[0091] Fig. 10 is a flowchart of the history display process. As shown in Fig. 10, when the history display process starts, in S301, the information display system 1 acquires the switch name from the storage unit 214. In S302, the information display system 1 acquires the time-series data of the first switch state from the storage unit 214.

[0092] In S303, the information display system 1 displays the time-series data of the first switch state together with the switch name. In S304, the information display system 1 highlights the switches whose state is different from the previous state. A specific example will be described below with reference to FIG.

[0093] 11 is a diagram for explaining the display of the switch state history in the information display system 1. On the screen, the name of the building "ABC Building" is displayed, and "Switch state history (before work started)" is also displayed.

[0094] Maintenance worker 52 performed inspection work on February 1, March 1, April 1, and May 1, 2021, and the switch status before work began on each inspection work day is displayed on the screen.

[0095] For example, before the start of inspection work on February 1st, the lighting switch is in the ON position and the fan switch is in the ON position. Here, the X5 switch is in the OFF position on February 1st, but is in the ON position on March 1st. In this way, if the switch status before the start of inspection work is changed at the time of the next inspection work, that switch is highlighted.

[0096] Similarly, on March 1st, the X5 switch was ON and the Y1 switch was ON, but on April 1st, the X5 switch was OFF and the Y1 switch was OFF, so these switches are highlighted. Also, on April 1st, the FAN switch was ON, but on May 1st, the FAN switch was OFF, so this switch is highlighted.

[0097] As described above, the settings of the multiple switches 61 to 74 are changed by the building manager or the like as appropriate depending on the operational status of the building. For this reason, it is not uncommon for the switch states to be changed for each inspection, as shown in FIG. 11. However, it is also possible that the building manager or the like may have made a mistake in changing the switch states. For this reason, by presenting the building manager or the like with a switch state history such as that shown in FIG. 11, even if the building manager or the like has made a mistake in setting the switch states, it will be easy to discover this.

[0098] As described above, the CPU 211 of the information display system 1 acquires a first image captured by the camera 115 at a first timing before the start of elevator inspection work. The CPU 211 extracts the states of the multiple switches 61 to 74 from the first image as a first switch state. The CPU 211 acquires a second image captured by the camera 115 at a second timing after the first timing. The CPU 211 extracts the states of the multiple switches 61 to 74 from the second image as a second switch state. The CPU 211 extracts information about switches whose states differ between the first switch state and the second switch state. The display unit 121 displays information about the switches whose states differ. For example, the second timing is the timing after the inspection work is completed. This makes it possible to prevent forgetting to reset the switch states that were changed for the elevator inspection work.

[0099] The display unit 121 displays a second image in which the color of the switch in a different state has been changed to a specific color (for example, red). If there is a switch in a different state, the display unit 121 displays a warning message to that effect. This makes it possible to more reliably prevent forgetting to return the switch state that was changed for elevator inspection work.

[0100] The CPU 211 acquires a second image at predetermined time intervals. Each time the CPU 211 acquires a second image, it extracts the second switch state and also extracts information about the switches in different states. Each time information about the switches in different states is extracted, the display unit 121 displays a second image in which the color of the switches in different states has been changed to a specific color (for example, red). This allows the difference to be confirmed in real time, and the switch state can be restored while checking the image.

[0101] CPU 211 extracts multiple switch names from the first image. Input unit 122 allows the user to change the extracted multiple switch names. Display unit 121 displays, as information about switches with different states, the switch names of the switches and the states of the switches extracted from the first image and the second image. This makes it possible to manage switch names corresponding to switches and makes it easier to understand changed switch states.

[0102] The storage unit 214 stores the history of the first switch state. The display unit 121 displays the history of the first switch state. In this way, even if a building manager or the like has set the switch state incorrectly, this can be easily discovered.

[0103] The embodiments disclosed herein are merely examples and are not limited to the above. The scope of the present invention is defined by the claims, and it is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0104] 1 Information display system, 10 car, 40 Switch box, 40a Side, 52 Maintenance staff, 61-74 Switch, 100 Terminal, 111 CPU, 112 ROM, 113 RAM, 114 Memory unit, 115 Camera, 120 Communication interface, 121 Display unit, 122 Input unit, 131 Acquisition unit, 132 Extraction unit, 133 Comparison unit, 150 Car operation panel, 151 Indicator, 152 Door open button, 153 Door close button, 160 Door, 161 1st floor call button, 162 2nd floor call button, 163 3rd floor call button, 164 4th floor call button, 200 Server, 211 CPU, 212 ROM, 213 RAM, 214 Memory unit, 220 Communication interface.

Claims

1. An information display system that displays information from a plurality of switches arranged in an elevator car, a camera that captures images of the switches; a processing unit that processes images of the plurality of switches captured by the camera; a display unit that displays information about the plurality of switches; each of the plurality of switches is a switch for switching an operation of the elevator, The processing unit acquiring a first image captured by the camera at a first timing before the start of the elevator inspection work; extracting states of the plurality of switches from the first image as first switch states; acquiring a second image captured by the camera at a second timing that is later than the first timing; extracting states of the plurality of switches from the second image as second switch states; extracting information about switches whose states differ between the first switch state and the second switch state; The display unit displays information about the switches that are in different states.

2. The information display system according to claim 1 , wherein the display unit displays the second image in which the color of the switch in a different state is changed to a specific color.

3. The processing unit acquiring the second image at predetermined time intervals; extracting the second switch state and information on the switches in different states each time the second image is acquired; The information display system according to claim 1 , wherein the display unit displays the second image in which the color of the switch in a different state is changed to a specific color each time information about the switch in a different state is extracted.

4. 4. The information display system according to claim 1, wherein, when there is a switch whose state is different, the display unit displays a warning message indicating that there is a switch whose state is different.

5. The information display system according to claim 1 or 2, wherein the second timing is a timing after the inspection work is completed.

6. the plurality of switches are arranged on a car operating panel provided in the car, the car operating panel has the plurality of switches arranged thereon and the plurality of switch names written thereon corresponding to the plurality of switches, the processing unit extracts the names of the switches from the first image; further comprising an input unit that allows a user to change the names of the extracted switches; The information display system according to any one of claims 1 to 5, wherein the display unit displays the switch name of the switch and the state of the switch extracted from the first image and the second image as information about the switch whose state is different.

7. a storage unit that stores a history of the first switch state; 7. The information display system according to claim 1, wherein the display unit displays a history of the first switch state.

8. An information display method for displaying information on a plurality of switches arranged in an elevator car, comprising: capturing images of the switches with a camera; processing images of the plurality of switches captured by the camera; displaying information about the plurality of switches; each of the plurality of switches is a switch for switching an operation of the elevator, The processing step includes: acquiring a first image captured by the camera at a first timing before the start of the elevator inspection work; extracting states of the plurality of switches as first switch states from the first image; acquiring a second image captured by the camera at a second timing that is later than the first timing; extracting states of the plurality of switches as second switch states from the second image; extracting information about a switch whose state differs between the first switch state and the second switch state; The information display method, wherein the displaying step displays information about the switches that are in different states.

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