A photographing device for a passenger conveyor comb plate and a method for mounting the same

Abstract

Provided is a photographing device capable of photographing a comb plate while minimizing the impact on the appearance of a passenger conveyor, and an installation method thereof. The photographing device (17) photographs a comb plate (3). The comb plate (3) is disposed between a pair of comb skirts (26) in the left-right direction at an entrance (2) of a passenger conveyor (1). The photographing device (17) includes a camera (29) and a fixed box (30). One of the comb skirts (26) is provided with a photographing window (40). The camera (29) photographs the comb plate (3) through the photographing window (40) from outside the comb skirt (26) in the left-right direction and above the comb plate (3). The fixed box (30) is attached to the back side of the comb skirt (26). The fixed box (30) fixes the camera (29) inside with the camera (29) facing downward so as to face the comb plate (3).

Description

[Technical field]

[0001] The present disclosure relates to a photographing device for a comb plate of a passenger conveyor and a mounting method thereof. [Background technology]

[0002] Patent Document 1 discloses an example of a monitoring device for a comb plate of a passenger conveyor. The monitoring device is equipped with a camera that photographs the comb plate. The monitoring device judges whether the comb plate is normal or abnormal by comparing the image of the comb plate photographed by the camera with an image of the comb plate under normal conditions. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2006-27790 Summary of the Invention [Problem to be solved by the invention]

[0004] In the monitoring device of Patent Document 1, the camera is attached to the handrail guide or the inner plate. On the other hand, the handrail guide is for guiding the moving handrail that users of the passenger conveyor grasp when using the passenger conveyor, and the inner plate has a large area, so mounting the camera outside these locations has a large impact on the appearance of the passenger conveyor.

[0005] The present disclosure is directed to solving such problems. The present disclosure provides an imaging device and an installation method thereof that are capable of photographing a comb plate while minimizing the impact on the appearance of a passenger conveyor. [Means for solving the problem]

[0006] The photographing device according to the present disclosure is a photographing device for a comb plate arranged between a first comb skirt and a second comb skirt in the left-right direction at the entrance and exit of a passenger conveyor, and includes a camera having a photographing window and arranged perpendicular to the comb plate, the camera being arranged to photograph the comb plate through the photographing window from the outside in the left-right direction of the first comb skirt and above the comb plate, and a second comb skirt attached to the back side of the first comb skirt and facing the comb plate. The imaging window is inclined with respect to the normal direction of the surface of the first comb skirt. and a fixing box for fixing the camera inside with the camera facing downward, the fixing box being provided with a photographing window on the surface of the first comb skirt. The above Outside the range where the shooting window is projected along the normal direction and above the upper end of the shooting window The camera is positioned so that , fix the camera. The mounting method according to the present disclosure is a mounting method for a photographing device for a comb plate disposed between a first comb skirt and a second comb skirt in the left-right direction at the entrance of a passenger conveyor, and includes removing the existing first comb skirt from the outside in the left-right direction of the position where the comb plate is to be disposed, and mounting a photographing window on the back side of the newly installed first comb skirt that is disposed perpendicular to the comb plate, so that a camera that photographs the comb plate through the photographing window from the outside in the left-right direction of the first comb skirt and above the comb plate faces the comb plate. The imaging window is inclined with respect to the normal direction of the surface of the first comb skirt. The present invention includes a method for mounting a fixing box for fixing the camera inside with the camera facing downward together with the camera, and mounting the newly installed first comb skirt to which the fixing box is attached on the outside in the left and right direction of the position where the comb plate is provided, and the fixing box is attached to the surface of the first comb skirt where the shooting window is provided. The above Outside the range where the shooting window is projected along the normal direction and above the upper end of the shooting window The camera is positioned so that , fix the camera. Effect of the Invention

[0007] According to the photographing device or mounting method for a comb plate of a passenger conveyor of the present disclosure, the impact on the appearance of the passenger conveyor can be reduced. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a configuration diagram of a passenger conveyor according to a first embodiment. [Diagram 2] 1 is a perspective view of an entrance / exit for a passenger conveyor according to a first embodiment. FIG. [Diagram 3] FIG. 1 is a perspective view of an imaging device according to a first embodiment. [Figure 4] 1 is an enlarged view of a main part of a passenger conveyor to which an imaging device according to a first embodiment is attached. [Diagram 5] 1 is a cross-sectional view of a main part of a passenger conveyor to which an imaging device according to a first embodiment is attached. [Figure 6] FIG. 2 is a diagram for explaining the mounting position of the imaging device according to the first embodiment. [Figure 7] 4 is a flowchart showing an example of the operation of the inspection system according to the first embodiment. [Figure 8] 4 is a diagram showing an example of an image of a comb plate captured by the imaging device according to the first embodiment. FIG. [Figure 9] 1 is a hardware configuration diagram of a main part of an inspection system according to a first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The embodiments for carrying out the present disclosure will be described with reference to the accompanying drawings. In each drawing, the same or corresponding parts are given the same reference numerals, and duplicated descriptions are appropriately simplified or omitted. Note that the subject of the present disclosure is not limited to the following embodiments, and any component of the embodiment may be modified or omitted within the scope of the gist of the present disclosure.

[0010] Embodiment 1 FIG. 1 is a configuration diagram of a passenger conveyor 1 according to the first embodiment.

[0011] The passenger conveyor 1 is, for example, an inclined escalator that is hung between the upper and lower floors of a building. At this time, the passenger conveyor 1 transports passengers between the upper and lower floors. Entrances 2 of the passenger conveyor 1 are provided on the upper and lower floor sides of the building. The entrances 2 are places where passengers get on and off the passenger conveyor 1. One entrance 2 is the departure entrance 2 where passengers get on the passenger conveyor 1. The other entrance 2 is the arrival entrance 2 where passengers get off the passenger conveyor 1. At each entrance 2, a comb plate 3 is provided on the inside in the front-rear direction. The comb plate 3 is arranged over the entire width in the left-right direction of the part of the passenger conveyor 1 that transports passengers. A plurality of comb teeth 4 are provided on the comb plate 3. In this example, the plurality of comb teeth 4 are arranged at equal intervals in the left-right direction of the passenger conveyor 1. The passenger conveyor 1 includes a truss 5, a drive unit 6, a plurality of steps 7, a pair of balustrades 8, a pair of moving handrails 9, a brake 10, and a control unit 11.

[0012] The truss 5 is a long portion of the passenger conveyor 1 in the front-to-rear direction, which serves as a frame supporting the structure of the passenger conveyor 1. In this example, the truss 5 is disposed between the upper and lower floors of a building. One front-to-rear end of the truss 5 is the end on the upper floor side. The other front-to-rear end of the truss 5 is the end on the lower floor side. An upper machine room 12a is provided at the end of the truss 5 on the upper floor side. A lower machine room 12b is provided at the end of the truss 5 on the lower floor side.

[0013] The drive device 6 includes a device such as a motor that generates a drive force. In this example, the drive device 6 is disposed in the upper machine room 12a. The drive device 6, for example, drives and rotates a sprocket 13 in the upper machine room 12a. An endless drive chain 14 is wound around the sprocket 13. The drive device 6 generates a drive force to circulate the drive chain 14.

[0014] Each step 7 is a device that moves in a circular motion by a driving force generated by a driving device 6. Each step 7 is attached to, for example, a driving chain 14 that is moved in a circular motion by the driving device 6, and moves in a circular motion together with the driving chain 14. Each step 7 moves on an outward path from the boarding / alighting entrance 2 on the departure side to the boarding / alighting entrance 2 on the arrival side, and moves on a return path that is lower than the outward path from the boarding / alighting entrance 2 on the arrival side to the boarding / alighting entrance 2 on the departure side. A cleat is provided on the surface of each step 7 along the front-rear direction. Each step 7 is extended from below the comb plate 3 at the boarding / alighting entrance 2 on the departure side, with the comb teeth 4 of the comb plate 3 and the cleat on the surface engaging with a gap therebetween. Each step 7 enters below the comb plate 3 at the boarding / alighting entrance 2 on the arrival side, with the comb teeth 4 of the comb plate 3 and the cleat on the surface engaging with a gap therebetween. The multiple steps 7 are arranged in a staircase shape on the outward path.

[0015] One balustrade 8 is disposed on the left side of the steps 7. The other balustrade 8 is disposed on the right side of the steps 7. In other words, the pair of balustrades 8 are disposed on the outer sides of the steps 7 in the left-right direction.

[0016] Each moving handrail 9 is a device that moves in a circular motion by the driving force generated by the drive unit 6. Each moving handrail 9 moves on an outward path from the departure boarding / alighting gate 2 to the arrival boarding / alighting gate 2, and moves on a return path that is lower than the outward path from the arrival boarding / alighting gate 2 to the departure boarding / alighting gate 2. Each moving handrail 9 is made of a flexible ring-shaped member. One moving handrail 9 is positioned on the left side of the multiple steps 7. The other moving handrail 9 is positioned on the right side of the multiple steps 7.

[0017] The brake 10 is a device that is responsible for holding each step 7 still when the passenger conveyor 1 is stopped. In this example, the brake 10 is disposed in the upper machine room 12a. The brake 10 holds each step 7 still by, for example, braking the rotation of the sprocket 13 of the drive unit 6.

[0018] The control device 11 is a device that controls the operation of the passenger conveyor 1. In this example, the control device 11 is disposed in the upper machine room 12a. When the passenger conveyor 1 is started, the control device 11 outputs a signal to the drive device 6 to start driving, and outputs a signal to the brake 10 to release the sprocket 13, etc. This releases the stationary holding of each step 7, and each step 7 starts circulating. During the subsequent normal operation, the passenger conveyor 1 transports passengers who are standing on any of the steps 7 while holding one of the moving handrails 9, for example, by the driving force generated by the drive device 6 under the control of the control device 11. At this time, each step 7 moves in the forward direction in the forward path, for example, at a normal speed set in advance. Each moving handrail 9 moves circulating at a moving speed that matches each step 7. When the passenger conveyor 1 is stopped, the control device 11 outputs a signal to the drive device 6 to stop driving, and outputs a signal to the brake 10 to brake the sprocket 13, etc. As a result, each step 7 stops its circulating movement and is held stationary. The passenger conveyor 1 is started and stopped, for example, by operating a key switch. The passenger conveyor 1 is started and stopped when no passengers are on board.

[0019] An inspection system 15 is applied to the passenger conveyor 1. The inspection system 15 is a system used for inspecting the passenger conveyor 1. The inspection system 15 is equipped with a function for acquiring information such as images or audio of the passenger conveyor 1 so that, for example, a maintenance worker or the like can perform a visual inspection of the passenger conveyor 1 from a remote location. The inspection system 15 is newly applied to, for example, an existing passenger conveyor 1. The inspection system 15 may also be applied to a newly installed passenger conveyor 1 from the beginning of its installation. The inspection system 15 includes a sound pickup device 16, a photographing device 17, an inspection panel 18, and a communication device 19.

[0020] The sound collection device 16 is a device that collects information such as sounds generated from the passenger conveyor 1, for example, at the time of start-up, normal operation, and stop. The sound collection device 16 includes, for example, a microphone. The sound collection device 16 is disposed in, for example, the upper machine room 12a so as to collect sounds generated by the drive device 6, the brake 10, and the like.

[0021] The photographing device 17 is a device that acquires information such as images of the passenger conveyor 1, for example, at the time of startup, normal operation, and stop. The photographing device 17 is permanently installed at one or both of the departure and arrival side boarding / alighting doors 2 so that it can capture images of the comb plate 3. The images captured by the photographing device 17 are used for inspection, for example, to check whether the comb teeth 4 of the comb plate 3 are broken.

[0022] The inspection panel 18 is a device that performs information processing in the inspection system 15. The information processing in the inspection system 15 includes, for example, control of the operation of the sound collection device 16 and the image capture device 17. The information processing in the inspection system 15 includes, for example, management of the storage, accumulation, deletion, update, and input / output of acquired information. The inspection panel 18 is disposed in one or both of the upper machine room 12a and the lower machine room 12b. The inspection panel 18 includes a control unit 20 and a memory unit 21. The control unit 20 is a part that controls the operation of the sound collection device 16 and the image capture device 17. The memory unit 21 is a part that accumulates and stores information acquired by the sound collection device 16 and the image capture device 17. The memory unit 21 may delete accumulated information that has been acquired for a preset period of time by, for example, overwriting the information with newly acquired information. The inspection panel 18 is connected to the control device 11 so that the control unit 20 can acquire control signals and the like that the control device 11 of the passenger conveyor 1 outputs to equipment of the passenger conveyor 1, such as the brake 10. The inspection panel 18 is connected to the sound collection device 16 and the image capture device 17 so as to be able to output control signals such as operation commands and to be able to acquire information that has been collected and photographed.

[0023] The communication device 19 is a device that communicates information with devices outside the inspection system 15. The communication device 19 is an example of a communication unit in the inspection system 15. The communication device 19 is connected to the inspection panel 18 so as to be able to input and output information. The communication device 19 is connected to a wide-area communication network such as the Internet or a telephone line network, or a local communication network such as a LAN (Local Area Network). The communication device 19 is connected to a communication network such as the LTE standard (LTE: Long Term Evolution). In this example, the communication device 19 transmits information such as an image or voice of the passenger conveyor 1 stored in the memory unit 21 of the inspection panel 18 in response to a request from a maintenance worker or the like who performs a visual inspection of the passenger conveyor 1 from a remote location. The request from the maintenance worker or the like is transmitted to the communication device 19 from a computer or the like outside the inspection system 15 through a communication network such as the Internet.

[0024] FIG. 2 is a perspective view of the entrance / exit 2 of the passenger conveyor 1 according to the first embodiment.

[0025] Each railing 8 includes a railing guide 22, an inner plate 23, a skirt guard 24, and an inner deck 25. The railing guide 22 is a member that guides the movement of the moving railing 9. The inner plate 23 is disposed below the moving railing 9 and the railing guide 22. The inner plate 23 is a portion that faces passengers riding on the passenger conveyor 1 from the left and right directions. The skirt guard 24 is disposed on the side of the step 7. The surface of the skirt guard 24 of the right railing 8 faces the side of the step 7 from the right side. The surface of the skirt guard 24 of the left railing 8 faces the side of the step 7 from the left side. The skirt guard 24 is a plate-shaped member whose longitudinal direction is the traveling direction of the step 7. The skirt guard 24 is disposed vertically. The inner deck 25 is a plate-shaped member provided between the upper end of the skirt guard 24 and the lower end of the inner plate 23. In each parapet 8, the inside of the portion surrounded by the skirt guard 24, the inner deck 25, etc. communicates with the inside of the truss 5.

[0026] The skirt guard 24 includes a comb skirt 26. The comb skirt 26 is a plate-shaped member disposed on the outside of the comb plate 3 in the left-right direction at the boarding / alighting entrance 2. The comb skirt 26 is attached to the outside of the position where the comb plate 3 is provided in the left-right direction. The surface of the comb skirt 26 of the right-side balustrade 8 is a surface facing the left side, facing the right end of the comb plate 3 from the right side. The surface of the comb skirt 26 of the left-side balustrade 8 is a surface facing the right side, facing the left end of the comb plate 3 from the left side. That is, the comb plate 3 is disposed between the comb skirts 26 of the left and right balustrades 8 in the left-right direction. In addition, the back surface of the comb skirt 26 of the right-side balustrade 8 is a surface facing the right side, which is not visible to passengers on the passenger conveyor 1. The back surface of the comb skirt 26 of the left-side balustrade 8 is a surface facing the left side, which is not visible to passengers on the passenger conveyor 1. Here, the comb skirt 26 of either the left or right balustrade 8 is an example of the first comb skirt. The comb skirt 26 of the other balustrade 8 on the left or right side is an example of a second comb skirt. The first comb skirt and the second comb skirt face each other with the comb plate 3 in between.

[0027] At least one of the comb skirts 26 may be provided with a comlight 27 and an operation unit 28. The comlight 27 is a lighting device that illuminates the vicinity of the comb plate 3 at the boarding / alighting entrance 2. The operation unit 28 includes, for example, a button or a switch that is operated when starting or stopping the passenger conveyor 1, in an emergency, during inspection, or in other cases. The operation unit 28 may be provided with a button cover or the like.

[0028] FIG. 3 is a perspective view of the imaging device 17 according to the first embodiment.

[0029] The photographing device 17 includes a camera 29 and a fixed box 30. In this example, the photographing device 17 is attached to the rear side of the first comb skirt, which is one of the left and right comb skirts 26.

[0030] The camera 29 includes, for example, a lens and an imaging element so as to be able to capture an image of the comb plate 3. In this example, the camera 29 captures a still image of the comb plate 3 under the control of the control unit 20.

[0031] The fixed box 30 is a part for fixing the camera 29. The fixed box 30 includes an outer box 31, an internal support 32, and a hiding plate 33.

[0032] The outer box 31 is a box-shaped member that forms the outer shell of the fixed box 30. The outer box 31 houses the camera 29 inside. The outer box 31 is attached to the back side of the comb skirt 26, for example, by screws, so that the front side of the outer box 31 faces the back side of the comb skirt 26. In this example, the outer box 31 is screwed to the comb skirt 26 with two tabs 34 provided on the front side. The outer box 31 has a recess 35 on the front side. The tabs 34 of the outer box 31 are provided on, for example, the edge of the recess 35. The outer box 31 has a shooting port 39 on the front side. The camera 29 shoots the comb plate 3 through the shooting port 39 from inside the outer box 31. The outer box 31 has a wire inlet 36 on the bottom. The wire inlet 36 is an opening through which communication lines and power supply lines wired to the camera 29 pass.

[0033] The internal support 32 is a member that supports the camera 29 inside the outer box 31. The internal support 32 is, for example, a bent plate-like member. The internal support 32 has a base 37 and a support 38. The base 37 is a lower part of the internal support 32. The base 37 is fixed to the bottom of the outer box 31 or the like. The base 37 is arranged so as to rise vertically inside the outer box 31. The support 38 is a part to which the camera 29 is attached. The support 38 is an upper part of the internal support 32. The support 38 is a part that is bent from the vertical direction toward the front of the fixed box 30. The normal line of the front surface of the support 38 faces downward. The camera 29 is attached to the front surface of the support 38, so that the camera 29 is fixed so as to face downward. The internal support 32 is stored inside the outer box 31 in a state in which it supports the camera 29.

[0034] The hidden plate 33 is a translucent plate-like member. The hidden plate 33 is, for example, an acrylic flat plate. In this example, the color of the hidden plate 33 is different from the color of the comb plate 3. For example, when the comb plate 3 is yellow, a blue-smoked acrylic plate is used as the hidden plate 33. The hidden plate 33 is attached to the front of the fixed box 30 so as to cover the shooting opening 39. The thickness of the hidden plate 33 does not exceed the height of the edge of the recess 35 on the front of the fixed box 30. In other words, the hidden plate 33 is attached so as to be contained in the recess 35. The thickness of the hidden plate 33 may be the same as the height of the edge of the recess 35 on the front of the fixed box 30.

[0035] FIG. 4 is an enlarged view of a main part of the passenger conveyor 1 to which the imaging device 17 according to the first embodiment is attached. In FIG. 4, a comb skirt 26 is shown with an imaging device 17 attached to the back side.

[0036] The fixed box 30 of the photographing device 17 is attached to the back side of the comb skirt 26 with the camera 29 fixed inside. In this example, the photographing device 17 is attached above the com light 27. In this figure, a virtual plane V is shown, which is a vertical plane that is parallel to the left-right direction of the passenger conveyor 1 and passes through the comb plate 3. The camera 29 of the photographing device 17 is placed within the plane of the virtual plane V.

[0037] A photographing window 40 is provided in the comb skirt 26 to which the photographing device 17 is attached. The photographing window 40 is covered by a concealed plate 33 from the rear side of the comb skirt 26. At this time, the concealed plate 33 may be in contact with the edge of the photographing window 40. The camera 29 photographs the comb plate 3 through the concealed plate 33 and the photographing window 40 from the rear side of the comb skirt 26.

[0038] FIG. 5 is a cross-sectional view of a main part of a passenger conveyor 1 to which an imaging device 17 according to the first embodiment is attached. In FIG. 5, a cross-sectional view taken along imaginary plane V in FIG. 4 is shown.

[0039] The fixed box 30 is stored on the back side of the comb skirt 26 and does not protrude from the front surface of the comb skirt 26 inward in the left-right direction of the passenger conveyor 1. The fixed box 30 fixes the camera 29 above the upper end of the photographing window 40. The fixed box 30 fixes the camera 29 inside with the camera 29 facing downward so as to face the comb plate 3. The camera 29 photographs the comb plate 3 through the photographing window 40 from outside the comb skirt 26 in the left-right direction and above the comb plate 3.

[0040] FIG. 6 is a diagram for explaining the mounting position of the imaging device 17 according to the first embodiment.

[0041] The camera 29 of the photographing device 17 photographs the comb plate 3 from above so that each comb tooth 4 can be identified on the image. Here, the pitch of the comb teeth 4 is d, the height of the camera 29 from the comb plate 3 is H, and the distance from the camera 29 to any one of the comb teeth 4 is R. The line connecting the camera 29 and the comb tooth 4 forms an angle θ with the horizontal plane. Since the distance R to the camera 29 is sufficiently far from the pitch d of the comb teeth 4, it can be evaluated that adjacent comb teeth 4 appear to be separated by d×sinθ on the image photographed by the camera 29. In order to identify adjacent comb teeth 4, it is sufficient that the interval on this image is larger than the resolution x of the camera 29, so that the condition d×sinθ>x is satisfied. Here, the resolution x of the camera 29 is determined by, for example, the angle of view, resolution, and photographing position of the camera 29, and represents the length that can be identified on the photographed image. Furthermore, since sinθ=H / R, the camera 29 is positioned so that the condition H / R>x / d is satisfied, i.e., so that the ratio of the height H of the camera 29 to the distance R is greater than the ratio of the resolution x of the camera 29 to the pitch d of the comb teeth 4.

[0042] The distance R is, for example, the distance from the camera 29 to the comb tooth 4 at the center of the left and right of the passenger conveyor 1. At this time, the comb plate 3 is photographed so that the comb tooth 4 at the center, where breakage is likely to occur due to the passage of passengers, can be identified, so that the presence or absence of breakage of the comb tooth 4 can be confirmed more reliably. The distance R is, for example, the distance from the camera 29 to the comb tooth 4 at a position where the distance from the comb skirt 26 on which the photographing device 17 is provided is 3 / 4 of the width between the left and right comb skirts 26. At this time, the comb plate 3 is photographed so that the comb tooth 4 at a position where breakage is likely to occur due to the passage of passengers lined up in two rows on the left and right can be identified, so that the presence or absence of breakage of the comb tooth 4 can be confirmed more reliably. The distance R is, for example, the distance from the camera 29 to the comb tooth 4 at the end opposite to the comb skirt 26 on which the photographing device 17 is provided. At this time, the comb plate 3 is photographed so that the entire comb tooth 4 of the comb plate 3 can be identified, so that the presence or absence of breakage of the comb tooth 4 can be confirmed more reliably. Even in an area where individual comb teeth 4 cannot be identified on the image, a maintenance worker can visually check whether or not the comb teeth 4 are broken, for example, based on the shading of the color of the image of the comb teeth 4 and its change or continuity. The photographing devices 17 may be provided on the back side of the comb skirts 26 on both the left and right sides. In this case, if each photographing device 17 can identify the comb teeth 4 up to the center on the left and right, the photographing devices 17 on both the left and right sides can obtain images in which the comb teeth 4 across the entire left and right width can be identified.

[0043] Next, a description will be given of an example of a method for attaching the photographing device 17. In this example, the inspection system 15 is newly applied to an existing passenger conveyor 1.

[0044] The worker performing the installation work removes the existing comb skirt 26 from the passenger conveyor 1. At this time, the worker may also remove the comb plate 3, the steps 7, and the like from the passenger conveyor 1.

[0045] Thereafter, the worker attaches the fixing box 30 for the imaging device 17 to the back side of the newly installed com skirt 26. At this time, the fixing box 30 has the camera 29 fixed inside. The newly installed com skirt 26 has a imaging window 40 provided. The worker aligns the concealing plate 33 with the position of the imaging window 40, and attaches the fixing box 30 by screwing the two tabs 34, for example.

[0046] The worker then attaches the newly installed com skirt 26 with the fixed box 30 attached to the passenger conveyor 1.

[0047] Next, an example of inspection of the passenger conveyor 1 using the inspection system 15 will be described with reference to Figs.

[0048] FIG. 7 is a flowchart showing an example of the operation of the inspection system 15 according to the first embodiment. FIG. 8 is a diagram showing an example of an image of the comb plate 3 captured by the imaging device 17 according to the first embodiment.

[0049] In step S1 of FIG. 7, the control unit 20 judges whether or not the control unit 11 of the passenger conveyor 1 has received a control signal output to the brake 10. The control signal is, for example, a control signal that indicates braking of the brake 10 and causes the brake 10 to be braked, or a control signal that indicates release of the brake 10 and causes the brake 10 to be released. The control signal may be, for example, a control signal that indicates braking and release of the brake 10. The control signal may be, for example, a control signal that causes the brake 10 to be switched between braking and release. The control signal is received, for example, when the passenger conveyor 1 is started or stopped. When the control unit 20 judges that the control signal from the control unit 11 has not been received, the processing of the inspection system 15 proceeds to step S1 again. On the other hand, when the control unit 20 judges that the control signal from the control unit 11 has been received, the processing of the inspection system 15 proceeds to step S2.

[0050] In step S2, the control unit 20 executes a recording process. In the recording process, the control unit 20 causes the sound collection device 16 to start acquiring sound. The sound collection device 16 ends acquiring sound after a preset time has elapsed from the start. The time is, for example, a time from the release of the brake 10 until the moving speed of the steps 7 reaches a certain rated speed, a time from the application of the brake 10 until the steps 7 completely stop, or a certain time of sufficient length including these times. The control unit 20 acquires information on the sound acquired by the sound collection device 16. In the recording process, the control unit 20 may, for example, perform post-processing of the information on the sound acquired from the sound collection device 16. The post-processing includes, for example, encoding processing. Thereafter, the processing of the inspection system 15 proceeds to step S3.

[0051] In step S3, the control unit 20 executes a voice recording process. In the voice recording process, the control unit 20 stores the voice information acquired from the sound collection device 16 after necessary post-processing in the storage unit 21. The storage unit 21 accumulates and stores the information output from the control unit 20 for, for example, a preset number of days. After that, the process of the inspection system 15 proceeds to step S4.

[0052] In step S4, the control unit 20 executes a photographing process. In the photographing process, the control unit 20 causes the photographing device 17 to acquire an image. The camera 29 of the photographing device 17 captures a still image of the comb plate 3 based on an instruction from the control unit 20. In the photographing process, the control unit 20 may perform, for example, post-processing of the image information acquired from the photographing device 17. The post-processing includes, for example, a format conversion process or a compression process. Thereafter, the process of the inspection system 15 proceeds to step S5.

[0053] In step S5, the control unit 20 executes an image recording process. In the image recording process, the control unit 20 stores information on the image acquired from the photographing device 17 after necessary post-processing in the storage unit 21. The storage unit 21 accumulates and stores the information output from the control unit 20 for, for example, a preset number of days. Thereafter, the process of the inspection system 15 proceeds to step S1.

[0054] The processes from step S2 to step S5 are an example of an inspection process that is started with a control signal output from the control device 11 to the brake 10 as a trigger. The inspection process includes a preceding process that is started immediately after the control signal. The processes from step S2 to step S3 are an example of the preceding process. The preceding process may include other processes. The photographing process in step S4 is started after the preceding process is completed.

[0055] FIG. 8 shows an example of an image of the comb plate 3 captured by the image capture device 17 in a state where the comb teeth 4 are broken.

[0056] When inspecting the passenger conveyor 1 from a remote location, the maintenance worker requests the communication device 19 to transmit information via an information terminal device operated by the maintenance worker and a server computer connected to the information terminal device. The communication device 19 returns information such as an image of the comb plate 3 stored in the storage unit 21 of the inspection panel 18 to the information terminal device operated by the maintenance worker. The information terminal device of the maintenance worker receives, for example, an image of the comb plate 3 shown in FIG. 8 from the communication device 19.

[0057] The maintenance worker visually checks the image of the comb plate 3 displayed on the information terminal device to check whether the comb teeth 4 are broken or not. If the comb teeth 4 are broken, the maintenance worker takes action such as replacing the comb plate 3. If the comb teeth 4 are not broken, the maintenance worker creates an inspection report stating that there are no abnormalities such as broken comb teeth 4 in the comb plate 3.

[0058] The maintenance worker may also perform other inspections. For example, the maintenance worker visually checks the operation unit 28 shown in the image of the comb plate 3 to check whether there is any abnormality in the operation unit 28, such as damage or dirt.

[0059] As described above, the inspection system 15 according to the first embodiment includes the camera 29 and the control unit 20. The camera 29 is permanently installed on the passenger conveyor 1. The camera 29 photographs the comb plate 3. The control unit 20 receives a control signal representing either or both of application and release of the brake 10 of the drive device 6 from the control device 11 of the passenger conveyor 1. The control unit 20 executes an inspection process using the control signal as a trigger. The control unit 20 causes the camera 29 to photograph the comb plate 3 in the inspection process.

[0060] With this configuration, in the inspection system 15, an image of the comb plate 3 is taken when a control signal for the brake 10 is output from the control device 11. The control signal for the brake 10 is output regardless of the position of the step 7. Therefore, every time a control signal for the brake 10 is output, an image of the comb plate 3 is taken when the cleats of different steps 7 are engaged with the comb teeth 4 at different positions. Therefore, even if there is an abnormality on the image of the comb plate 3 that is difficult to see due to a specific position of a specific step 7, the abnormality is easily found. In addition, the inspection system 15 can start the inspection process including taking an image of the comb plate 3 just by acquiring the control signal for the brake 10. Therefore, the inspection system 15 can be applied to various types of passenger conveyors 1 including old models.

[0061] Furthermore, in the inspection process, the control unit 20 performs a pre-processing immediately after receiving a control signal, and causes the camera 29 to photograph the comb plate 3 after the pre-processing is completed.

[0062] With this configuration, an image of the comb plate 3 is captured at a timing other than immediately after the brake 10 is applied or released. This makes it difficult for the image to be blurred due to vibration of the steps 7 immediately after the brake is applied or released. This allows a clearer image of the comb plate 3 to be captured, and inspection of the comb plate 3 using the image can be performed more accurately.

[0063] The control unit 20 also receives, as control signals, one or both of a signal that causes the control device 11 to release the brake 10 when the passenger conveyor 1 starts, and a signal that causes the control device 11 to apply the brake 10 when the passenger conveyor 1 stops. The control unit 20 performs an inspection process using the control signal as a trigger.

[0064] With this configuration, images of the comb plate 3 are taken at the timing when there are no passengers, such as at the start and stop. As a result, the comb plate 3 is not hidden by passengers' shoes, etc., so that the inspection of the comb plate 3 using the automatically taken images can be performed more reliably. In addition, when images of the comb plate 3 are taken at both the start and stop, images at different time periods corresponding to the start and stop are taken. In general, the shooting conditions, such as the way the external light hits the board, may differ depending on the situation, such as the time of day. In this case, the appearance of the comb plate 3 on the image may change. For this reason, images of the comb plate 3 under different shooting conditions are obtained, so that oversights due to the shooting conditions are suppressed, and the inspection of the comb plate 3 using the images can be performed more accurately.

[0065] Furthermore, in the inspection process, the control unit 20 causes the camera 29 to capture an image of the comb plate 3 after at least a preset time has elapsed since the start of the inspection process. The preset time is, for example, a time during which the sound pickup device 16 captures sound in the sound recording process. The control unit 20 may be performing information processing such as sound recording during that time. Alternatively, the control unit 20 may not be required to perform information processing other than timekeeping during that time.

[0066] With this configuration, an image of the comb plate 3 is captured at least after a preset time has elapsed since the brake 10 was applied or released. This makes it less likely that the image will be blurred due to vibration of the steps 7 immediately after braking or release. This allows a clearer image of the comb plate 3 to be captured, and inspection of the comb plate 3 using the image can be performed more accurately. In addition, it is possible to capture an image of the comb plate 3 when the steps 7 are operating at a constant speed or at a complete stop, without the need for a sensor to monitor the movement state of the steps 7.

[0067] In addition, the camera 29 captures a still image of the comb plate 3 .

[0068] With this configuration, since unnecessary information such as the movement of the steps 7 is not included, it becomes possible to carry out the inspection work in the same way for images taken under different conditions, such as when the passenger conveyor 1 is started and stopped. This makes the inspection work of the passenger conveyor 1 using images more efficient.

[0069] The inspection system 15 also includes a storage unit 21. The storage unit 21 accumulates and stores images of the comb plate 3 captured by the camera 29. The inspection system 15 also includes a communication device 19. The communication device 19 transmits the images of the comb plate 3 stored in the storage unit 21 in response to an external request.

[0070] With this configuration, a maintenance worker for the passenger conveyor 1 can visually inspect the comb plate 3 from a remote location. Since the maintenance worker can perform the inspection work without visiting the site where the passenger conveyor 1 is installed, the efficiency of the inspection work is further improved. In addition, since the presence of the manager of the passenger conveyor 1 is not required when the maintenance worker visits for inspection, the burden on the manager is reduced. In addition, since the inspection system 15 does not require advanced information processing such as image recognition, the processing performance required for the inspection panel 18 is reduced. This reduces the cost when applying the inspection system 15.

[0071] Moreover, the photographing device 17 of the inspection system 15 according to the first embodiment is a device that photographs the comb plate 3. The comb plate 3 is disposed between a pair of comb skirts 26 in the left-right direction at the boarding / alighting entrance 2 of the passenger conveyor 1. The photographing device 17 includes a camera 29 and a fixed box 30. A photographing window 40 is provided in one of the comb skirts 26. The camera 29 photographs the comb plate 3 through the photographing window 40 from outside the comb skirt 26 in the left-right direction and above the comb plate 3. The fixed box 30 is attached to the back side of the comb skirt 26. The fixed box 30 fixes the camera 29 inside with the camera 29 facing downward so as to face the comb plate 3. The mounting method of the photographing device 17 according to the first embodiment also includes removing one of the existing comb skirts 26 from the outside in the left-right direction of the position where the comb plate 3 is to be provided. The mounting method also includes mounting the fixed box 30 together with the camera 29 to the back side of the new comb skirt 26 in which the photographing window 40 is provided. The mounting method also includes mounting the new comb skirt 26 with the fixed box 30 mounted to the outside in the left-right direction of the position where the comb plate 3 is to be provided.

[0072] With this configuration, the imaging device 17 is provided on the back side of the com skirt 26 under the feet of the passengers, so that the impact on the appearance of the passenger conveyor 1 is suppressed. In addition, when the inspection system 15 is applied, it is sufficient to have a imaging window 40 on the surface of the com skirt 26, so that the impact on the appearance of the passenger conveyor 1 is suppressed. In addition, the communication lines and power supply lines of the imaging device 17 can be wired in a place that is not visible to passengers, such as inside the truss 5. Therefore, the impact on the appearance of the passenger conveyor 1 is suppressed. In addition, since the imaging device 17 is provided inside the passenger conveyor 1, it is not necessary to provide additional devices in the building to which the passenger conveyor 1 is applied when applying the inspection system 15. In addition, since the imaging device 17 is provided inside the passenger conveyor 1, it is possible to attach the camera 29 to the com skirt 26 while wiring to the camera 29 is routed inside the fixed box 30, so that the installation work is made easier. In addition, since the orientation of the camera 29 has already been adjusted inside the fixed box 30, it is not necessary to adjust the camera 29 after installation, so that the installation work of the imaging device 17 is made easier. In addition, since the camera 29 is disposed facing downward in a position invisible to passengers, it is unlikely to cause passengers anxiety or discomfort from the viewpoint of privacy, for example. In addition, since the inspection system 15 can be applied by simply replacing the com skirt 26 when installing the imaging device 17, it becomes easy to apply the inspection system 15 to an existing passenger conveyor 1.

[0073] Moreover, the camera 29 is disposed within the plane of an imaginary vertical plane V. The vertical plane V is parallel to the left-right direction of the passenger conveyor 1 and includes the comb plate 3.

[0074] With this configuration, the camera 29 can capture the image of the comb plate 3 straight in the left-right width direction, so that an image that is easier to inspect can be captured. This allows the inspection of the comb plate 3 by image to be performed more accurately.

[0075] The fixed box 30 also includes a semi-transparent concealing plate 33. The concealing plate 33 covers the photographing window 40 from the rear side of the com skirt 26.

[0076] Usually, the inside of the fixed box 30 is darker than the outside. Therefore, the hidden plate 33 makes it difficult to see the inside of the fixed box 30 where the camera 29 is provided from the outside. This reduces the likelihood of passengers feeling uneasy or uncomfortable from the viewpoint of privacy, for example.

[0077] Further, in the fixed box 30, a recess 35 is provided on a surface facing the rear side of the com skirt 26. The concealing plate 33 is attached so as to be housed in the recess 35.

[0078] With this configuration, the front surface of the fixed box 30 can be brought into close contact with the rear surface of the com skirt 26. This makes it easier to align the fixed box 30, and therefore makes it easier to attach the imaging device 17.

[0079] Moreover, the color of the hidden plate 33 is different from the color of the comb plate 3.

[0080] With this configuration, the comb plate 3 is less likely to blend into the background in a captured image, which makes it possible to more accurately inspect the comb plate 3 using images.

[0081] The fixed box 30 also fixes the camera 29 so that the camera 29 includes the operation units 28 provided on the comb skirts 26 on the opposite left and right sides in its photographing range.

[0082] With this configuration, visual inspection of the operating unit 28 can be performed at the same time as inspection of the comb plate 3. This increases the number of items that can be inspected, and further improves the quality of inspection of the passenger conveyor 1 from a remote location.

[0083] Furthermore, the fixing box 30 fixes the camera 29 above the upper end of the photographing window 40 .

[0084] With this configuration, the camera 29 becomes less visible through the photographing window 40. This reduces the likelihood of passengers feeling uneasy or uncomfortable from the standpoint of privacy, for example.

[0085] In addition, the fixed box 30 fixes the camera 29 so that the ratio of the height H of the camera 29 from the comb plate 3 to the distance R from the camera 29 to the comb tooth 4 located in the center of the left-right direction of the comb plate 3 is greater than the ratio of the resolution x of the camera 29 to the pitch d of the comb teeth 4 of the comb plate 3.

[0086] With this configuration, the comb plate 3 is photographed so that the comb teeth 4 in the center, which are prone to breakage when passengers pass by, can be identified, making it possible to more reliably check whether the comb teeth 4 are broken or not.

[0087] Furthermore, the fixed box 30 does not protrude from the front surface of the comb skirt 26.

[0088] This configuration prevents the photographing device 17 from getting caught on passengers' clothes, etc.

[0089] The passenger conveyor 1 may be a horizontal or inclined moving walkway, etc.

[0090] Next, an example of the hardware configuration of the inspection system 15 will be described with reference to FIG. FIG. 9 is a hardware configuration diagram of a main part of the inspection system 15 according to the first embodiment.

[0091] Each function of the inspection system 15 may be realized by a processing circuit. The processing circuit includes at least one processor 100a and at least one memory 100b. The processing circuit may include at least one dedicated hardware 200 in addition to or in place of the processor 100a and the memory 100b.

[0092] When the processing circuit includes the processor 100a and the memory 100b, each function of the inspection system 15 is realized by software, firmware, or a combination of software and firmware. At least one of the software and firmware is written as a program. The program is stored in the memory 100b. The processor 100a realizes each function of the inspection system 15 by reading and executing the program stored in the memory 100b.

[0093] The processor 100a is also called a CPU (Central Processing Unit), a processing device, an arithmetic device, a microprocessor, a microcomputer, or a DSP. The memory 100b is composed of a non-volatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM, or an EEPROM.

[0094] Where the processing circuitry comprises dedicated hardware 200, the processing circuitry may be implemented, for example, as a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.

[0095] Each function of the inspection system 15 can be realized by a processing circuit. Alternatively, each function of the inspection system 15 can be realized collectively by a processing circuit. Some of the functions of the inspection system 15 may be realized by dedicated hardware 200, and the other parts may be realized by software or firmware. In this way, the processing circuit realizes each function of the inspection system 15 by dedicated hardware 200, software, firmware, or a combination of these.

[0096] To summarize the above explanation, possible configurations of the technology according to the present disclosure include the configurations listed below as appendices. (Appendix 1) A photographing device for a comb plate disposed between a first comb skirt and a second comb skirt in the left-right direction at the entrance of a passenger conveyor, a camera that photographs the comb plate through a photographing window provided on the first comb skirt from a position outside the first comb skirt in the left-right direction and above the comb plate; a fixing box attached to the rear side of the first comb skirt and fixing the camera therein with the camera facing downward so as to face the comb plate; An imaging device comprising: (Appendix 2) The camera is disposed in a virtual vertical plane that is parallel to the left-right direction and includes the comb plate. 2. The imaging device according to claim 1. (Appendix 3) The fixed box includes a translucent cover plate that covers the imaging window from the back side of the first comb skirt. 3. The imaging device according to claim 1 or 2. (Appendix 4) The fixed box has a recess on a surface facing the back side of the first comb skirt, The concealing plate is attached so as to be housed in the recess. 4. The imaging device according to claim 3. (Appendix 5) The color of the concealing plate is different from the color of the comb plate. 5. The imaging device according to claim 3 or 4. (Appendix 6) The fixing box fixes the camera so that an operation unit provided on the second comb skirt on the opposite side of the first comb skirt is included in the shooting range. 6. An imaging device according to any one of claims 1 to 5. (Appendix 7) The fixing box fixes the camera above an upper end of the photographing window. 7. The imaging device according to any one of claims 1 to 6. (Appendix 8) the fixing box fixes the camera such that a ratio of a height of the camera from the comb plate to a distance from the camera to a comb tooth at a center in a left-right direction of the comb plate is greater than a ratio of a resolution of the camera to a pitch of the comb teeth of the comb plate; 8. The imaging device according to any one of claims 1 to 7. (Appendix 9) The fixing box does not protrude from the front surface of the first comb skirt. 9. An imaging device according to any one of claims 1 to 8. (Appendix 10) A method for mounting a photographing device on a comb plate disposed between a first comb skirt and a second comb skirt in the left-right direction at the entrance of a passenger conveyor, Removing the first comb skirt from the outside in the left-right direction of the position where the comb plate is to be provided; Attaching a fixing box to the back side of the newly installed first comb skirt having a photographing window, together with the camera, the fixing box fixing the camera inside in a state in which the camera faces downward so that the camera photographs the comb plate through the photographing window from outside the first comb skirt in the left and right directions and above the comb plate, facing the comb plate; Attaching the newly installed first comb skirt to which the fixed box is attached to the outside in the left-right direction of the position where the comb plate is provided; An installation method comprising: [Industrial Applicability]

[0097] The imaging device according to the present disclosure can be applied to inspecting the comb plate of a passenger conveyor. The installation method according to the present disclosure can be applied to installing an imaging device that photographs the comb plate of a passenger conveyor. [Explanation of symbols]

[0098] 1 passenger conveyor, 2 boarding / alighting door, 3 comb plate, 4 comb teeth, 5 truss, 6 driving device, 7 step, 8 balustrade, 9 moving handrail, 10 brake, 11 control device, 12a upper machine room, 12b lower machine room, 13 sprocket, 14 drive chain, 15 inspection system, 16 sound pickup device, 17 photographing device, 18 inspection panel, 19 communication device, 20 control unit, 21 memory unit, 22 handrail guide, 23 inner plate, 24 skirt guard, 25 inner deck, 26 com skirt, 27 com light, 28 operation unit, 29 camera, 30 fixing box, 31 outer box, 32 internal support, 33 concealment plate, 34 tab, 35 recess, 36 inlet, 37 base, 38 support, 39 imaging port, 40 imaging window, 100a processor, 100b memory, 200 dedicated hardware

Claims

1. a photographing device for a comb plate disposed between a first comb skirt and a second comb skirt in the left-right direction at the entrance of a passenger conveyor; a camera having a photographing window and arranged perpendicular to the comb plate, the camera being arranged outside the first comb skirt in the left-right direction and above the comb plate, and photographing the comb plate through the photographing window; a fixing box attached to the back side of the first comb skirt and fixing the camera therein in a state in which the camera faces downward at an angle with respect to a normal direction of the surface of the first comb skirt on which the photographing window is provided so as to face the comb plate; Equipped with The fixing box fixes the camera so that the camera is disposed outside a range in which the photographing window is projected along the normal direction of the surface of the first comb skirt on which the photographing window is provided, and above an upper end of the photographing window. Filming equipment.

2. The camera is disposed in a virtual vertical plane that is parallel to the left-right direction and includes the comb plate. The imaging device according to claim 1 .

3. The fixed box includes a translucent cover plate that covers the imaging window from the back side of the first com skirt. The imaging device according to claim 1 or 2.

4. The fixed box has a recess on a surface facing the back side of the first comb skirt, The concealing plate is attached so as to be housed in the recess. The imaging device according to claim 3.

5. The color of the concealing plate is different from the color of the comb plate. The imaging device according to claim 3.

6. The fixing box fixes the camera so that an operation unit provided on the second comb skirt on the opposite side to the first comb skirt is included in the shooting range. The imaging device according to claim 1 or 2.

7. the fixing box fixes the camera such that a ratio of a height of the camera from the comb plate to a distance from the camera to a comb tooth at a center in a left-right direction of the comb plate is greater than a ratio of a resolution of the camera to a pitch of the comb teeth of the comb plate; The imaging device according to claim 1 or 2.

8. The fixing box does not protrude from the front surface of the first comb skirt. The imaging device according to claim 1 or 2.

9. A method for mounting a photographing device on a comb plate disposed between a first comb skirt and a second comb skirt in the left-right direction at the entrance of a passenger conveyor, Removing the first comb skirt from the outer side in the left-right direction of a position where the comb plate is to be provided; a fixing box is attached to the rear side of the newly installed first comb skirt, which is provided with a photographing window and disposed perpendicular to the comb plate, and the fixing box fixes the camera inside the box in a state in which the camera faces downward at an angle with respect to the normal direction of the surface of the first comb skirt, on which the photographing window is provided, so that the camera photographs the comb plate through the photographing window from outside the first comb skirt in the left-right direction and above the comb plate faces the comb plate; Attaching the newly installed first comb skirt to which the fixed box is attached to the outside in the left-right direction of a position where the comb plate is provided; Equipped with The fixing box fixes the camera so that the camera is disposed outside a range in which the photographing window is projected along the normal direction of the surface of the first comb skirt on which the photographing window is provided, and above an upper end of the photographing window. How to install.