JP6785257B2 - Passenger conveyor handrail inspection device and passenger conveyor handrail inspection method - Google Patents

Description

The present invention relates to a handrail inspection device for a passenger conveyor and a handrail inspection method for a passenger conveyor.

Passenger conveyors such as escalators and moving walkways are provided with handrails on the left and right that move in the direction of travel in synchronization with the steps on which passengers are placed, and the passengers grasp the handrails to prevent passengers from tipping over. ..

This handrail is composed of rubber and steel cord. The steel cord is composed of a plurality of wires twisted together and embedded inside the rubber for the purpose of ensuring the strength when the handrail rotates in a long length. The handrail deteriorates due to the usage environment and aging, and the surface of the handrail cracks due to hydrolysis. If the handrail is used in that state, the deterioration will be accelerated. Therefore, it is preferable that the handrail of the passenger conveyor is regularly inspected to diagnose the deteriorated state, and the handrail that has deteriorated is replaced.

In Patent Document 1, as a method for diagnosing aged deterioration of the handrail, the surface of the handrail is photographed with a camera, the photographed image is compared with the image when the handrail is new, and the handrail is aged due to a change in the color tone of the surface. It is disclosed that a deterioration diagnosis is performed.

Japanese Unexamined Patent Publication No. 2013-49560

By the way, when the handrail is photographed with a camera, the changes appearing on the handrail in the photographed image include a change due to deterioration of the handrail and a change due to dirt such as dust adhering to the surface of the handrail. However, as described in Patent Document 1, simply judging the change in the color tone of the surface of the handrail as deterioration causes the change due to the deterioration of the handrail itself and the change due to dirt such as dust adhering to the surface of the handrail. There was a problem that it could not be distinguished. Therefore, if there is dirt on the surface of the handrail due to dust or the like, the dirt caused by dust or the like is erroneously determined as deterioration, and the diagnostic accuracy is lowered.

An object of the present invention is to provide a handrail inspection device for a passenger conveyor and a handrail inspection method for a passenger conveyor that can reliably detect deterioration of the surface of the handrail by distinguishing it from dirt on the surface of the handrail.

In order to solve the above problems, for example, the configuration described in the claims is adopted.
The present invention includes a plurality of means for solving the above problems. For example, in a handrail inspection device for a passenger conveyor, which is mounted on a passenger conveyor and inspects a handrail provided in the passenger conveyor, the handrail The lighting unit that illuminates the vehicle, the camera that captures the handrail illuminated by the lighting unit, and the lighting unit and camera can be mounted near the curved portion of the handrail of the passenger conveyor and near the straight portion of the handrail. It is provided with two lighting mounting parts, one and the other, as a mechanism part and a lighting mounting part for mounting the lighting part . When the camera captures a straight part of the handrail, the lighting set in one lighting mounting part is used. When the camera illuminates the curved part of the handrail by irradiating the illumination light that is almost perpendicular to the handrail, the illumination light from the illumination set on the other lighting attachment part is used for the handrail. The camera irradiates the illumination light at an oblique angle with respect to the light, and the camera acquires a curved portion image obtained by photographing the curved portion of the handrail and a straight portion image obtained by photographing the straight portion of the handrail. And the deterioration of the handrail is judged based on the image of the straight part .

According to the present invention, by photographing a curved portion where cracks and the like due to deterioration are likely to appear and diagnosing the state of the handrail, it becomes possible to easily distinguish dirt and cracks such as dust, which occur on the surface of the handrail. Deterioration such as cracks can be reliably detected.
Issues, configurations and effects other than those described above will be clarified by the description of the following embodiments.

It is a perspective view which shows the structure of the handrail inspection apparatus according to one Embodiment of this invention. It is a perspective view which shows the schematic structure of the escalator to which the handrail inspection device according to one Embodiment of this invention is attached. It is a block diagram which shows the whole structure of the handrail inspection apparatus according to one Embodiment of this invention. It is a perspective view which shows the mounting example (example 1) of the handrail inspection apparatus by one Embodiment of this invention. It is a perspective view which shows the mounting example (example 2) of the handrail inspection apparatus by one Embodiment of this invention. It is explanatory drawing which shows the deterioration state of a handrail. It is a flowchart which shows the flow of the inspection process by one Embodiment of this invention. It is explanatory drawing which shows the example of the inspection state by the example of one Embodiment of this invention.

Hereinafter, an example of an embodiment of the present invention (hereinafter, referred to as “this example”) will be described with reference to the accompanying drawings.

[1. Escalator configuration example]
First, with reference to FIG. 2, a schematic configuration of an escalator as an example of a passenger conveyor to which this example is applied will be shown.
As shown in FIG. 2, the escalator 1 is provided with a step 2 on which passengers are placed and a handrail 3 that moves in the traveling direction in synchronization with the step 2. The handrails 3 are provided on both the left and right sides of the step 2 with respect to the traveling direction of the step 2.
By grasping the handrail 3, the passenger can prevent the passenger from falling while riding on the escalator.

Since the handrail 3 is configured to have an endless shape and has a structure that orbits along the balustrades 4 provided on both sides of the step 2, the handrail 3 has a straight portion 3a arranged in a straight line in the intermediate portion. Have. On the other hand, in the lower portion 5 and the upper portion (not shown), the handrail 3 has a curved portion 3b in which a curve is drawn.

[2. Configuration of handrail inspection device]
FIG. 1 shows the configuration of the handrail inspection device 10 mounted on the escalator 1.
The handrail inspection device 10 is fixed to the railing 4 (FIG. 2) of the escalator 1. The fixed state of the handrail inspection device 10 will be described later (FIGS. 4 and 5).
The handrail inspection device 10 includes a camera fixing plate 11 and an inclined plate 12. The camera fixing plate 11 has a camera 13 for photographing the handrail. The camera 13 is installed so that the lens 13a faces the handrail side (lower side in FIG. 1) vertically. An inclined plate 12 is attached to the end of the camera fixing plate 11 in a state of being inclined by about several tens of degrees with respect to the camera fixing plate 11.

A lighting mounting portion 11a is installed beside the camera 13 of the camera fixing plate 11, and a lighting mounting portion 12a is also installed on the inclined plate 12. A lighting unit 14 having a built-in light source can be attached to these lighting mounting units 11a and 12a. FIG. 1 shows a state in which the illumination unit 14 is attached to the illumination attachment portion 11a on the camera fixing plate 11 side, and shows a state in which the illumination portion 14 is not attached to the illumination attachment portion 12a on the inclined plate 12 side.

As shown in FIG. 1, when the illumination unit 14 is attached to the camera fixing plate 11, the subject (handrail) to be photographed by the camera 13 is illuminated with the illumination light from substantially the front. On the other hand, when the illumination unit 14 is attached to the inclined plate 12, the subject is illuminated by the illumination light from an oblique angle of the subject photographed by the camera 13.
As shown in FIG. 1, legs 15 and 16 are attached to the camera fixing plate 11, and a fixing mechanism 17 is formed at the tips of the legs 15 and 16, respectively. The fixing mechanism portion 17 is a mechanism for fixing to the balustrade 4 of the escalator. The legs 15 and 16 have elastic portions 15a and 16a, and their lengths can be adjusted.

The fixing mechanism portion 17 is composed of a first member 17a attached to the leg portion 15 side and a second member 17b attached to the leg portion 16 side, and the second member 17b has fixing screws 17c and 17d. To be equipped. Then, when the fixing mechanism portion 17 is attached to the balustrade 4 (FIG. 2), the fixing screws 17c and 17d are tightened with the balustrade 4 sandwiched between the first member 17a and the second member 17b. Fix with. It is preferable to attach rubber or the like to prevent damage to the balustrade 4 at a portion (the tip of the first member 17a and the fixing screws 17c and 17d) that comes into direct contact with the balustrade 4 when it is fixed to the balustrade 4.

FIG. 3 shows an example of the internal configuration of the handrail inspection device 10.
In the example of FIG. 3, the handrail inspection device 10 shows a configuration in which a separate data processing terminal 20 is connected to inspect the handrail. The handrail inspection device 10 and the data processing terminal 20 communicate with each other by wire or wirelessly. As the data processing terminal 20, an information processing terminal possessed by a maintenance worker such as a tablet terminal or a notebook computer device can be applied. Alternatively, it may be a dedicated data processing terminal prepared for inspection of the handrail.

The handrail inspection device 10 includes a camera 13, a lighting unit 14, and a buzzer sounding unit 18.
The camera 13 includes an image pickup unit 13b, an image data acquisition unit 13c, an image data storage unit 13d, a data transmission unit 13e, and a mark detection unit 13f.
The imaging unit 13b captures a moving image or a still image. The imaging unit 13b of this example images (photographs) the handrail of the escalator.
The image data captured by the image capturing unit 13b is captured by the image data capturing unit 13c and stored in the image data storage unit 13d. The image data stored in the image data storage unit 13d is transmitted to the data processing terminal 20 side by the data transmission unit 13e.

The mark detection unit 13f performs a process of detecting an object as a mark previously assigned to the handrail from the image data obtained by the image pickup unit 13b. Here, the mark object detected by the mark detection unit 13f is, for example, a sticker of a specific color attached by a maintenance worker during the inspection work of the handrail. The mark detection unit 13f detects one round of the endless handrail 3 by detecting that the colored portion of the sticker is on the handrail.

When the mark detection unit 13f detects an object to be a mark, the image data acquisition unit 13c is instructed to start or end the acquisition. Therefore, the image data storage unit 13d stores the image data for one round of the handrail. Further, at the timing when the mark detection unit 13f gives an instruction to end the acquisition of the image data, the buzzer sounding unit 18 is instructed to sound the buzzer sound, and the worker is instructed to end the shooting work.

The data processing terminal 20 includes a data receiving unit 21, an image data storage unit 22, an image data processing / analysis unit 23, a determination processing unit 24, a deterioration mode database 25, and a determination result display unit 26.
The data receiving unit 21 receives the image data transmitted from the camera 13 of the handrail inspection device 10. The image data received by the data receiving unit 21 is stored in the image data storage unit 22.

The image data processing / analysis unit 23 compares and analyzes the image data obtained by photographing the straight portion and the image data obtained by photographing the curved portion in the image data of the handrail stored by the image data storage unit 22. The details of the analysis processing performed by the image data processing / analysis unit 23 will be described later.
Then, the determination processing unit 24 determines the deterioration state of the handrail based on the analysis by the image data processing / analysis unit 23. At the time of determination by the determination processing unit 24, the degree of deterioration is determined by using the data about the deterioration mode stored in the deterioration mode database 25.
The determination result display unit 26 displays the presence or absence of deterioration determined by the determination processing unit 24 and the deterioration status when there is deterioration.

[3. Installation example of handrail inspection device]
4 and 5 show a state in which the handrail inspection device 10 is attached to the handrail 3.
FIG. 4 shows a state in which the straight portion 3a of the handrail 3 is attached so as to photograph, and FIG. 5 shows a state in which the curved portion 3b of the handrail 3 is attached so as to photograph.

When photographing the straight portion 3a, as shown in FIG. 4, the camera 13 straddles the balustrade 4 with the two legs 15 and 16 so as to face the straight portion 3a of the handrail 3. The handrail inspection device 10 is fixed to the balustrade 4 by the fixing mechanism portion 17. Further, the illumination unit 14 is attached to the illumination attachment portion 11a (FIG. 1) of the camera fixing plate 11 of the handrail inspection device 10 so as to irradiate the illumination light substantially perpendicular to the handrail 3.

When photographing the curved portion 3b, as shown in FIG. 5, the camera 13 straddles the balustrade 4 with the two legs 15 and 16 so as to face the curved portion 3b of the handrail 3. The handrail inspection device 10 is fixed to the balustrade 4 by the fixing mechanism portion 17. Further, the illumination unit 14 is attached to the illumination attachment portion 12a (FIG. 1) of the inclined plate 12 of the handrail inspection device 10, and the illumination light is obliquely irradiated to the handrail 3 at a predetermined angle (for example, about 45 °). ..

The lengths of the legs 15 and 16 are adjusted by the telescopic portions 15a and 16a in both the case of photographing the straight portion 3a shown in FIG. 4 and the case of photographing the curved portion 3b shown in FIG. The handrail 3 photographed by the camera 13 is properly illuminated by the illumination light from the illumination unit 14. Further, the lengths of the legs 15 and 16 are appropriately adjusted by the telescopic portions 15a and 16a from the viewpoint of enabling the photographed image to be photographed in a focused state. For example, a maintenance worker makes adjustments at the time of mounting.
Further, although FIGS. 4 and 5 show an example in which the handrail inspection device 10 is fixed near the lower part of the escalator, the handrail inspection device 10 may be fixed to the upper part or the middle part of the escalator.

[4. Handrail inspection process flow]
Next, a process of inspecting the deteriorated state of the handrail 3 by using the handrail inspection device 10 of this example will be described.
First, an example of a deteriorated state occurring in the handrail 3 will be described with reference to FIG.
FIG. 6A shows an example of a handrail that has not deteriorated, and shows a state in which there is no abnormality in the state of the surface (upper surface or side surface) of the handrail 3.
FIG. 6B shows an example of a handrail with a sign of deterioration, and shows a state in which a crack 3x in the width direction is generated on the upper surface of the handrail 3. In the state where there is a sign of this deterioration, the crack 3x is almost only on the upper surface, and the crack 3x does not reach the side surface of the handrail 3.

FIG. 6C shows an example of a handrail in a state in which deterioration has progressed, and shows a state in which cracks 3y wrapping around from the upper surface to the side surface of the handrail 3 have occurred. The crack 3y in this deteriorated state may occur not only in the width direction but also in the longitudinal direction depending on the situation.
FIG. 6D shows an example of a handrail in a state in which the deterioration is further advanced, and shows a state in which cracks 3z in which the number and depth are further increased from the cracks 3y shown in FIG. 6C are generated.
It is not preferable that the escalator is operated in a state where a large number of cracks 3z as shown in FIG. 6D are generated, and it is preferable to replace the handrail 3 at the stage when the cracks 3x shown in FIG. 6B are detected.
The handrail inspection device 10 of this example performs a process of detecting cracks 3x, 3y, 3z of the handrail 3 as shown in FIG. It is preferable that the data indicating each state of FIG. 6 is stored in, for example, the deterioration mode database 25 of the data processing terminal 20 and used when the determination processing unit 24 determines the deterioration state.

The flowchart of FIG. 7 shows a flow of performing a handrail inspection work using the handrail inspection device 10 and the data processing terminal 20.
First, the maintenance worker attaches a mark or the like indicating a reference position to the surface of the handrail 3 (step S1). Then, the maintenance worker attaches the handrail inspection device 10 to the balustrade 4 so as to photograph the straight portion 3a of the handrail 3 (step S2). Here, it is attached to the balustrade 4 in the state shown in FIG.

After installing the handrail inspection device 10, the maintenance worker runs the escalator, and the camera 13 starts photographing the surface of the handrail 3 (step S3). Here, the camera 13 takes a moving image or a still image at regular intervals. Then, after detecting that the handrail 3 of the escalator has made one round based on the detection of the mark attached in step S1, the maintenance worker stops the escalator and ends the shooting (step S4).

Next, the maintenance worker removes the handrail inspection device 10 from the balustrade 4, and then attaches the handrail inspection device 10 to the balustrade 4 so as to photograph the straight portion 3a of the handrail 3 (step S5). Here, it is attached to the balustrade 4 in the state shown in FIG.

After installing the handrail inspection device 10, the maintenance worker runs the escalator again, and the camera 13 starts photographing the surface of the handrail 3 (step S6). Here, as in the shooting in step S4, the camera 13 shoots a moving image or a still image at regular intervals. Then, after detecting that the handrail 3 of the escalator has made one round based on the detection of the mark attached in step S1, the maintenance worker stops the escalator and ends the shooting (step S7). At the end of shooting, the mark sticker attached in step S1 is removed.

Next, the camera 13 transmits the image data captured in steps S3 and S6 to the data processing terminal 20 (step S8).
In the data processing terminal 20, the image data storage unit 22 stores the transmitted image data of the straight portion and the image data of the curved portion of the handrail 3. Then, the image data processing / analysis unit 23 analyzes the image of the straight portion and the image of the curved portion stored by the image data storage unit 22 (step S9), and the determination processing unit 24 is in a deteriorated state based on the analysis result. Make a judgment.

The determination processing unit 24 first determines from the image of the curved portion whether or not there is any abnormality such as a crack on the surface of the handrail 3 (step S10). Here, if there is no abnormality such as a crack on the surface of the curved portion of the handrail 3 (NO in step S10), the inspection process is terminated with no abnormality in the handrail (step S11). Further, when there is an abnormality such as a crack on the surface of the curved portion of the handrail 3 (YES in step S10), does the determination processing unit 24 have the same abnormality on the surface of the straight portion of the handrail 3? It is determined whether or not (step S12).

Here, when there is an abnormality in both the curved portion and the straight portion of the handrail 3 (YES in step S12), the determination processing unit 24 determines that the abnormality is due to dust or the like adhering to the surface of the handrail 3. It is determined that the abnormality is not due to deterioration (step S13). Further, when there is an abnormality only in the curved portion of the handrail 3 and there is no abnormality in the straight portion (NO in step S12), the determination processing unit 24 determines that the abnormality is due to deterioration of the handrail 3 (step S14). The abnormality due to the deterioration of the handrail 3 here is assumed to be, for example, a crack on the surface due to hydrolysis.
Then, after performing the diagnosis in steps S11, S13, and S14, the determination result display unit 26 of the data processing terminal 20 displays the determination result and ends the diagnosis process (step S15).

Next, it will be described with reference to FIG. 8 that the deterioration of the handrail 3 can be correctly determined by the inspection work using the handrail inspection device 10 of this example.
FIG. 8 shows a state in which cracks 101 due to hydrolysis and stains 102 are generated on the surface of the handrail 3. FIG. 8A shows an image of the straight portion 3a of the handrail 3, and FIG. 8B shows an image of the curved portion 3b of the handrail 3. The straight portion 3a of FIG. 8 (A) and the curved portion 3b of FIG. 8 (B) indicate the same position of the handrail 3. The crack 101 here is a relatively shallow crack, and is in a state where deterioration has not yet progressed.

Here, in the image of the straight portion 3a of the handrail 3 taken by the illumination light from substantially directly above, as shown in FIG. 8A, the crack 101 is almost indistinguishable, and only the dirt 102 is present. Is in a state where it can be determined.
On the other hand, in the image of the curved portion 3b of the handrail 3, as shown in FIG. 8B, since the illumination light from the illumination portion 14 is emitted obliquely, a shadow is intentionally cast on the crack 101. Is generated, and the crack 101 on the surface becomes clear. Since the handrail 3 itself is bent, the curved portion 3b is in a state where cracks 101 on the surface are likely to appear.

Therefore, by comparing the image of the straight line portion 3a shown in FIG. 8 (A) with the image of the curved portion 3b shown in FIG. 8 (B) and extracting the difference between the two images, FIG. 8 (C) is shown. The component of the dirt 102 such as dust shown and the component of the crack 101 due to deterioration shown in FIG. 8D can be separated.
Therefore, by performing the processing shown in the flowchart of FIG. 7 using the handrail inspection device 10 and the data processing terminal 20 of this example, the deterioration state of the handrail 3 can be accurately diagnosed. In particular, dirt such as dust on the surface of the handrail 3 is not erroneously diagnosed as deterioration, and a sign of deterioration of the handrail 3 can be accurately detected.

In order to distinguish between the deterioration of the handrail 3 and the dirt such as dust, it is preferable to acquire and compare both the image of the straight portion 3a and the image of the curved portion 3b. However, as shown in FIG. 8B, since the crack 101 clearly appears in the image of the curved portion 3b, the process of capturing the image of the straight portion 3a is omitted, and the image obtained by capturing the curved portion 3b. The deterioration state may be determined only from the above. By doing so, the handrail 3 can be photographed only once, and the deteriorated state of the handrail 3 can be diagnosed with a simpler operation.

[5. Modification example]
In the above-described embodiment, an example of inspecting the handrail of the escalator has been described, but other passenger conveyors such as a moving walkway equipped with the same handrail are inspected with the same configuration. You may.

Further, the configuration of the fixing mechanism portion 17 for fixing the handrail inspection device 10 of the above-described embodiment to the balustrade 4 is shown as an example, and the handrail inspection device 10 may be fixed to the balustrade 4 in other configurations. Good.
Further, the handrail inspection device 10 of the above-described embodiment is provided with two lighting mounting portions 11a and 12a having different mounting angles, and the lighting angle is changed by selecting the mounting position of the lighting unit 14. did. On the other hand, only one lighting mounting portion 11a or 12a is provided, and a mechanism capable of changing the irradiation angle of the light source of the lighting unit 14 mounted on the one lighting mounting portion 11a or 12a is provided. May be good.

Further, the handrail inspection device 10 of the above-described embodiment is configured to include one camera 13 and a set of lighting units 14. On the other hand, the handrail inspection device 10 may include two cameras 13 and two sets of lighting units 14, so that the straight portion 3a and the curved portion 3b of the handrail 3 are simultaneously photographed. ..

Further, in the above-described embodiment, the handrail inspection device 10 and the data processing terminal 20 are configured as separate devices, but the handrail inspection device 10 has a built-in data processing unit that performs deterioration determination processing. You may let it. For example, by using a terminal with a camera such as a smartphone or a tablet terminal as the camera 13 attached to the handrail inspection device 10, both the shooting process and the lighting processing can be performed on the terminal with the camera, and the data processing of the shot image can be performed. Will be able to do.

Alternatively, the function performed by the data processing terminal 20 is performed by the terminal installed in the monitoring center that remotely monitors the passenger conveyor, and at the site where the passenger conveyor is installed, only the handrail is photographed. Deterioration judgment may be performed at the monitoring center.

Furthermore, the present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to those having all the described configurations.
Further, in the configuration diagram of FIG. 3, only the control lines and information lines considered necessary for explanation are shown, and not all the control lines and information lines are necessarily shown in the product. In practice, it can be considered that almost all configurations are interconnected.

1 ... escalator, 2 ... step, 3 ... handrail, 3a ... straight part, 3b ... curved part, 4 ... balustrade, 5 ... lower part, 10 ... handrail inspection device, 11 ... camera fixing plate, 12 ... inclined plate, 11a , 12a ... Lighting mounting unit, 13 ... Camera, 13a ... Lens, 13b ... Imaging unit, 13c ... Image data acquisition unit, 13d ... Image data storage unit, 13e ... Data transmission unit, 13f ... Mark detection unit, 14 ... Lighting unit , 15, 16 ... Legs, 15a, 16a ... Telescopic part, 17 ... Fixing mechanism part, 17a ... First member, 17b ... Second member, 17c, 17d ... Fixing screw, 18 ... Buzzer ringing part, 20 ... Data Processing terminal, 21 ... data receiving unit, 22 ... image data storage unit, 23 ... image data processing / analysis unit, 24 ... judgment processing unit, 25 ... deterioration mode database, 26 ... judgment result display unit, 101 ... crack, 102 ... Dirt

Claims (2)

In a passenger conveyor handrail inspection device that is mounted on a passenger conveyor and inspects the handrails of the passenger conveyor.
The lighting unit that illuminates the handrail and
A camera that photographs the handrail illuminated by the lighting unit, and
The illumination unit and the camera, and the vicinity of the curved portion of the handrail and fixing mechanism which can be mounted in the vicinity of the linear portion of the handrail of the passenger conveyor,
As a lighting mounting portion for mounting the lighting portion, one and the other two lighting mounting portions are provided.
When the camera photographs a straight portion of the handrail, the illumination light from the illumination set on one of the illumination attachment portions irradiates the illumination light substantially perpendicular to the handrail.
When the camera photographs the curved portion of the handrail, the illumination light from the illumination set on the other illumination mounting portion irradiates the handrail at an oblique angle with the illumination light. ,
The camera acquires a curved portion image obtained by photographing the curved portion of the handrail, and the camera acquires a straight portion image obtained by photographing the straight portion of the handrail, and based on the curved portion image and the straight portion image , A handrail inspection device for passenger conveyors that determines the deterioration of the handrail. Inspecting the handrails of passenger conveyors In the method of inspecting handrails for passenger conveyors,
Lighting processing to illuminate the handrail and
A shooting process for photographing the handrail illuminated by the lighting process, and
Including data processing that inspects the handrail based on the image of the handrail taken by the camera.
In the illumination process, when the camera photographs a straight portion of the handrail, it irradiates an illumination light substantially perpendicular to the handrail, and when the camera photographs a curved portion of the handrail. Irradiates the handrail diagonally with illumination light at a predetermined angle.
In the photographing process, a curved portion image obtained by photographing the curved portion of the handrail and a straight line portion image obtained by photographing the straight portion of the handrail are acquired, and in the data processing, the curved portion image and the straight portion image are obtained. A method for inspecting a handrail for a passenger conveyor so as to judge deterioration of the handrail based on the above.

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