JP6748044B2 - Passenger conveyor inspection device and passenger conveyor inspection system - Google Patents

Description

The present invention relates to a passenger conveyor inspection device and a passenger conveyor inspection system, and is suitable for application to, for example, a passenger conveyor inspection device and a passenger conveyor inspection system for inspecting a passenger conveyor.

In the inspection of passenger conveyors such as escalator and moving walkways, the development of devices and systems related to the inspection is being promoted so that the time for which the service of the passenger conveyor will be stopped will not be inconvenienced to users. There is.

In recent years, it is possible to efficiently collect the operation noise of the passenger conveyor and send it to a remote monitoring center, etc., and appropriately verify the abnormality of the passenger conveyor that causes abnormal noise in the remote area and take prompt action. A passenger conveyor monitoring device is disclosed (see Patent Document 1).

JP, 2009-12891, A

However, since the technique described in Patent Document 1 is premised on the sound collection at the step where the moving sound collecting means is installed, when the point of occurrence of the abnormal sound moves due to the operation of the passenger conveyor, the abnormal point by the maintenance staff There is a problem that the work of specifying the sigma remains complicated.

The present invention has been made in view of the above points, and it is an object of the present invention to propose a passenger conveyor inspection device and a passenger conveyor inspection system that can appropriately identify an abnormal portion of the passenger conveyor.

In order to solve such a problem, the present invention is a passenger conveyor inspection device for inspecting a passenger conveyor, comprising: a sound collecting unit that collects operating noise of the passenger conveyor; and an image capturing unit that captures an image of a subject. A display section that displays a range in which the sound collecting section can collect sound on a passenger conveyor image showing the passenger conveyor imaged by the imaging section; sound collection data collected by the sound collecting section; and the passenger conveyor And a processing unit that identifies an abnormal portion of the passenger conveyor based on the operating status of the above and the range in which the sound can be collected.

Further, in the present invention, a passenger conveyor, a sound collecting unit that collects the operating sound of the passenger conveyor, an imaging unit that captures an image of a subject, and a passenger conveyor image that shows the passenger conveyor captured by the imaging unit. A display unit for displaying a sound collection range in the sound collection unit, the sound collection data collected in the sound collection unit, the operating condition of the passenger conveyor, and the sound collection range based on the passenger. A processing unit that identifies an abnormal portion of the conveyor is provided.

According to the present invention, it is possible to appropriately identify an abnormal place on the passenger conveyor.

It is a figure which shows an example of a structure of the passenger conveyor inspection system by 1st Embodiment. It is a figure which shows an example of a structure of the passenger conveyor inspection apparatus by 1st Embodiment. It is a figure which shows an example of the display mode displayed on the display part by 1st Embodiment. It is a figure which shows an example of the flowchart which concerns on abnormal location specific processing by 1st Embodiment. It is a conceptual diagram for demonstrating the presence-or-absence determination of the abnormal sound in the unit time of the operating sound collected by the sound collection part by 1st Embodiment. It is a conceptual diagram for demonstrating the correlation between the generation|occurrence|production point of the abnormal sound in a some sound collection part, and the operating condition of a passenger conveyor, when the generation|occurrence|production point of the abnormal sound by 1st Embodiment moves.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(1) First Embodiment In FIG. 1, reference numeral 1 generally indicates a passenger conveyor inspection system according to a first embodiment. The passenger conveyor inspection system 1 includes a passenger conveyor inspection device 2 and a passenger conveyor 3 to be inspected by the passenger conveyor inspection device 2.

The passenger conveyor inspection device 2 diagnoses the passenger conveyor 3 on the basis of the measurement unit 10A that measures the operating noise and operation of the passenger conveyor 3 and the measurement data (sound collection data, imaging data, etc.) measured by the measurement unit 10A. The diagnostic unit 10B that performs (inspection) is included.

The passenger conveyor 3 is an escalator, a moving walkway, or the like, and is fastened to the upper floor beam 21 and the lower floor beam 22 and is supported by a frame 23 installed between the upper and lower floors. A drive device 24 and a control panel 25 for the passenger conveyor 3 are installed in the frame 23 on the upper floor beam 21 side. The drive device 24 is controlled in operation by the control board 25, and drives the drive sprocket 27 via the drive chain 26.

A driven sprocket 28 paired with a drive sprocket 27 is installed in the frame 23 on the lower floor beam 22 side, and a step chain 29 is wound between the drive sprocket 27 and the driven sprocket 28. A large number of steps 30 are connected to the step chain 29, and by rotating the drive sprocket 27 by the drive device 24, the step chain 29 orbits between the drive sprocket 27 and the driven sprocket 28, and a large number of steps are obtained. 30 has a structure in which it circularly moves along the guide rail (not shown) between the upper floor entrance and the lower floor entrance.

Further, balustrades 31 composed of deck boards and balustrade panels are erected on both left and right sides of the circularly moving steps 30, and moving handrails 32 are attached to the outer periphery of the balustrade panel. The mounted moving handrail 32 is a handrail to be gripped by a passenger riding on the step 30, and the driving force of the driving device 24 is transmitted by a moving handrail driving device (not shown), In synchronism with the movement of the step 30, orbits around the balustrade panel. In addition, a skirt guard 33 is attached to the deck board to prevent passengers from falling into the body 23.

At the time of inspecting the passenger conveyor 3, the passenger conveyor inspection device 2 is installed near the lower floor side entrance/exit so as to be able to capture an image of the devices constituting the passenger conveyor 3 such as the step 30 and the moving handrail 32. In the following, a mode in which the maintenance staff 4 installs and uses the passenger conveyor inspection device 2 near the lower floor entrance/exit, but this is limited to the installation position of the passenger conveyor inspection device 2 near the lower floor entrance/exit. Instead, it may be in another form installed near the upper floor entrance/exit, above the skeleton 23, and used.

FIG. 2 is a diagram showing an example of the configuration of the passenger conveyor inspection device 2. The measurement unit 10A of the passenger conveyor inspection device 2 is a video camera or the like equipped with a directional microphone, and at least one imaging unit 11 for capturing an image of a subject (a passenger conveyor image showing the passenger conveyor 3 or the like). , And one or a plurality of sound collecting units 12 (sound collecting units 12A,..., 12B) having directivity for collecting sounds in a predetermined range (sound collecting range) within the imaging range of the imaging unit 11. ) And a communication unit 13 that can communicate with the diagnosis unit 10B.

The diagnostic unit 10B of the passenger conveyor inspection device 2 is a portable personal computer, tablet terminal, or the like, and is collected by the communication unit 14 that can communicate with the measurement unit 10A, the image captured by the imaging unit 11, and the sound collection unit 12. The storage unit 15 that records (stores) the sounded working sound in association with each other, and identifies the location where the abnormal sound is generated (the abnormal location of the passenger conveyor 3) based on the image, the working sound, the sound collection possible range, and the like. It is configured to include a processing unit 16 and a display unit 17 for displaying a sound collection range, a processing result by the processing unit 16, and the like.

In the present embodiment, the case where the passenger conveyor inspection device 2 is configured as two devices (the measurement unit 10A and the diagnosis unit 10B) will be described as an example, but the present invention is not limited to this configuration and two devices are provided. May be integrated and the communication units 13 and 14 may not be provided, or the storage unit 15 may be provided in another device or the like to be configured as three or more devices.

Note that the functions of the passenger conveyor inspection device 2 (the processing unit 16 and the like) may be realized by a CPU (Central Processing Unit) reading and executing a program stored in a memory, or by dedicated hardware. It may be realized, or these may be combined and realized.

FIG. 3 is a diagram showing an example of a display mode (captured image 40) displayed on the display unit 17 during inspection of the passenger conveyor 3. When the inspection of the passenger conveyor 3 is started, the maintenance worker 4 uses the captured image 40 (imaging range) where the abnormal sound is expected to occur in advance (measurement point: step 30, balustrade 31, moving handrail 32, skirt guard). 33) and the measurement unit 10A is fixed so that each sound collecting unit 12 faces the sound collecting unit 12.

Here, the abnormal sound has various causes. For example, in the passenger conveyor 3, when the passenger conveyor 3 is in operation, a specific step 30 deviates from the original trajectory and meanders, which may interfere with the skirt guard 33 and generate an abnormal sound. In this case, when the cause is the step 30 side, the cause step (source) of the abnormal sound moves as well as the cause step 30 moves.

Further, for example, an abnormal sound may be generated due to the sliding between the moving handrail 32 and the balustrade 31. In this case, when the operating direction of the passenger conveyor 3 changes, the contact surface changes and the presence or absence of abnormal noise changes.

Further, for example, an abnormal sound may be generated due to a defect inside the driving device 24. In this case, when the operating speed of the passenger conveyor 3 changes, the vibration frequency also changes, so the abnormal noise also changes.

When the measurement unit 10A is installed, as shown in FIG. 3, the display unit 17 displays images 30′, 31′, 32′, 33′ of the measurement points and the sound collection possible ranges 41 to 41 of the sound collection units 12. 46 and 46 are displayed in real time. Thereby, the maintenance staff 4 can easily understand that the installation for measuring the desired measurement location has been correctly performed.

Although illustration is omitted, when an abnormal sound is detected at the measurement location, the color of the sound collection possible range at the measurement location is changed, a comment is added, and the like to highlight the abnormality. By such highlighting, the maintenance staff 4 can easily grasp the abnormal portion of the passenger conveyor 3. The display of the inspection result on the display unit 17 may be a moving image (for example, a mode in which the passenger conveyor 3 is operating and highlighting is performed in real time as the equipment moves), or a still image. It may be.

Although FIG. 3 shows six sound collection possible ranges (in the case where six sound collection units 12 are provided), the number, the range, and the shape are not limited. , Can be changed as appropriate. Further, the position indicating the sound collection possible range may be adjusted by changing the position, the direction, or the like of the measuring unit 10A, or may be adjusted by changing the direction of the sound collecting unit 12. It may be.

(Method of identifying abnormal point)
An abnormal point specifying process for specifying an abnormal point of the passenger conveyor 3 (determining the cause of the abnormal sound of the passenger conveyor 3) will be described.

FIG. 4 is a diagram showing an example of a flow chart relating to the abnormal point identification processing.

First, in order to inspect the passenger conveyor 3 (inspection for abnormal sound), when the maintenance staff 4 installs the passenger conveyor inspection device 2 at the lower floor entrance/exit, and the operation to start the measurement is performed in the passenger conveyor inspection device 2. The passenger conveyor inspection device 2 starts measurement (step S11).

In Step S12, the operation of the passenger conveyor 3 is started in the normal operation direction and operation speed by the operation of the maintenance person 4, and the passenger conveyor inspection device 2 displays an image of the time when the step 30 and the moving handrail 32 make at least one round. Record the operation sound.

In step S13, the passenger conveyor inspection device 2 frequency-analyzes the operation sound (sound collection data) collected by the sound collection unit 12. At this time, the passenger conveyor inspecting device 2 compares the noise with the operating sound that was collected during normal operation, and compares it with the environmental sound that is collected by a microphone (not shown) that picks up the environmental sound to detect noise. May be cut.

In step S14, the passenger conveyor inspection device 2 determines whether or not an abnormal sound is generated by determining whether or not a predetermined threshold value is exceeded in each frequency band. If the passenger conveyor inspection device 2 determines that an abnormal sound is generated, the process proceeds to step S15. If the passenger conveyor inspection device 2 determines that no abnormal sound is generated, the process proceeds to step S26. According to this configuration, even a non-experienced maintenance personnel 4 can easily grasp the presence or absence of an abnormality and can perform maintenance and inspection work without omission.

Here, the process of step S14 will be described in more detail with reference to FIG. FIG. 5 is a conceptual diagram for explaining the determination of the presence/absence of an abnormal sound in the unit time of the operation sound collected by the sound collection unit 12.

In FIG. 5, a sound pressure level 51 indicating the strength of the sound is provided on the vertical axis, and a frequency 52 indicating the frequency of the sound is provided on the horizontal axis, and the operating sound of a certain time zone collected by the sound collecting unit 12 is FFT (fast). Fourier transform: a waveform 53 showing a waveform as a result, a frequency band 54 showing a frequency band used for a predetermined analysis, and a threshold 55 provided for each frequency band 54 are shown. ing.

That is, the passenger conveyor inspection device 2 determines whether or not the waveform 53 exceeds the threshold 55 of each frequency band 54, and when it determines that the waveform 53 exceeds the threshold 55, an abnormal sound (more specifically, a frequency band determined to have exceeded) is generated. If it is determined that the abnormal sound of No. 54) is occurring and it is not exceeded, it is determined that the abnormal sound is not occurring. In the example of FIG. 5, the passenger conveyor inspection device 2 determines that the waveform 53 does not exceed the threshold 55 of each frequency band 54, and determines that no abnormal sound is generated.

In step S15, the passenger conveyor inspection device 2 detects the step 30 in the image captured by the imaging unit 11 (captured image) by using a known contour extraction technique, and detects the moving direction and moving speed of the step 30. The operation status of the passenger conveyor 3 is detected.

In step S16, the passenger conveyor inspection device 2 compares the occurrence point of the abnormal sound and the operating condition of the passenger conveyor 3 and determines whether or not there is a correlation between them. More specifically, the passenger conveyor inspection device 2 determines whether or not an abnormal sound is moving according to the operating status of the passenger conveyor 3. For example, when the passenger conveyor inspection device 2 includes one sound collection unit 12, it determines that the abnormal sound is moving when the abnormal sound is periodically detected according to the operating speed of the passenger conveyor 3. You can In addition, for example, when the passenger conveyor inspection device 2 includes a plurality of sound collecting units 12, and the sound collecting possible ranges of the sound collecting units 12 are set adjacent to each other along the movement of the device to be measured, It is possible to determine that the abnormal sound is moving when the plurality of sound collecting units 12 sequentially detect the abnormal sound according to the operating speed of the passenger conveyor 3.

Here, the process of step S16 will be supplemented with reference to FIG. FIG. 6 is a conceptual diagram (corresponding to a certain frequency band) for explaining the correlation between the abnormal sound generation points in the plurality of sound collection units 12 and the operating condition of the passenger conveyor 3 when the abnormal sound generation point moves. It is an example of the graph which shows the detection time of the abnormal sound in each sound collection part 12 regarding the abnormal sound.

In FIG. 6, a sound pressure level 61 indicating sound intensity is shown on the vertical axis, and an elapsed time 62 showing elapsed time is provided on the horizontal axis. The sound pressure level 63 indicates the sound pressure level (peak) of the abnormal sound, and the abnormal sound level. Waveform 64 (64A to 64C) showing changes in sound pressure of sound over time, one rotation time 65 showing time required for the step 30 to make one round, and abnormal sound showing intervals at which abnormal sound peaks occur. Peak occurrence intervals 66 (66A to 66C) are shown.

That is, in the passenger conveyor inspection device 2, whether the one rotation time 65 is equal to the abnormal sound peak generation interval 66 and the timing of detecting the abnormal sound is moving in correlation with the operating speed of the passenger conveyor 3. It is possible to determine whether or not there is a correlation between the occurrence point of the abnormal sound and the operating condition of the passenger conveyor 3 by determining.

In step S17, if the passenger conveyor inspection device 2 determines that the abnormal sound is moving in accordance with the operating status of the passenger conveyor 3, the process proceeds to step S18, and the abnormal sound is generated in accordance with the operating status of the passenger conveyor 3. If it is determined that has not moved, the process proceeds to step S19.

In step S18, the passenger conveyor inspection device 2 determines that a movable portion (movable portion) such as the step 30, the moving handrail 32, or the like is the cause of the abnormal sound, and the passenger conveyor 3 moving in the sound collection possible range. The movable part is specified as the abnormal part, the abnormal display is performed on the display unit 17, and the abnormal part specifying process is ended. According to this configuration, even a non-experienced maintenance personnel 4 can easily grasp the abnormality of the movable portion and efficiently perform maintenance and inspection work.

In step S19, only the operation direction of the passenger conveyor 3 is changed by the operation of the maintenance staff 4 (changed to the operation direction opposite to the normal operation direction of step S12), and the operation of the passenger conveyor 3 is performed at the normal operation speed. Similarly to step S12, the passenger conveyor inspection device 2 records the image and the operation sound of the time when the step 30 and the moving handrail 32 make at least one round, and performs the frequency analysis of the sound collection data as in step S13.

In step S20, the passenger conveyor inspection device 2 determines whether or not there is a change between the abnormal sound (first sound collection data) recorded in step S12 and the abnormal sound (second sound collection data) recorded in step S19. To judge. More specifically, the passenger conveyor inspection device 2 determines whether the frequency of the abnormal sound changes, whether the energy (sound pressure level) of the abnormal sound changes, and whether the generation interval of the abnormal sound changes. Determine at least one. If the passenger conveyor inspection device 2 determines that there is a change in the abnormal sound, the process proceeds to step S25, and if it determines that the abnormal sound does not change, the process proceeds to step S21.

In step S21, only the operating speed of the passenger conveyor 3 is changed by the operation of the maintenance staff 4 to operate the passenger conveyor 3 in the normal operating direction, and the passenger conveyor inspecting device 2 operates in the same way as in step S12. The moving handrail 32 records the image and the operation sound for at least one round, and the frequency of the sound collection data is analyzed as in step S13.

In step S22, the passenger conveyor inspection device 2 determines whether or not there is a change in the abnormal sound (first sound collection data) recorded in step S12 and the abnormal sound (third sound collection data) recorded in step S21. Is determined similarly to step S20. If the passenger conveyor inspection device 2 determines that the abnormal sound has changed, the process proceeds to step S24. If the passenger conveyor inspection device 2 determines that the abnormal sound does not change, the process proceeds to step S23.

In step S23, the passenger conveyor inspection device 2 determines that the non-movable portion (fixed portion) such as the skirt guard 33 is the cause of the abnormal sound, and determines the fixed portion of the passenger conveyor 3 in the sound collection possible range as the abnormal portion. The display unit 17 identifies and highlights the abnormality, and ends the abnormal point identification processing. According to such a configuration, even a non-experienced maintenance worker 4 can easily grasp the abnormality of the fixed portion and efficiently perform the maintenance and inspection work.

In step S24, the passenger conveyor inspection device 2 determines that the drive device 24, the moving handrail drive device, and the drive device-related (drive unit) such as devices related to these are the cause of the abnormal sound, and in the sound collection possible range. The drive unit of the passenger conveyor 3 is specified as the abnormal part, the abnormal display is highlighted on the display unit 17, and the abnormal part specifying process is ended. According to such a configuration, even a non-experienced maintenance worker 4 can easily grasp the abnormality of the drive unit and efficiently perform the maintenance and inspection work.

In step S25, the passenger conveyor inspection device 2 determines that the sliding parts (sliding parts) such as the outer periphery of the balustrade 31 and the moving handrail 32 are the causes of the abnormal sound, and the passenger conveyor 3 in the sound collection possible range. The sliding portion is specified as the abnormal portion, the abnormality related highlighting is displayed on the display unit 17, and the abnormal portion specifying process is ended. According to this configuration, even a non-experienced maintenance worker 4 can easily grasp the abnormality of the sliding portion and efficiently perform the maintenance and inspection work.

In step S26, the passenger conveyor inspection device 2 determines that the passenger conveyor 3 is normal, displays on the display unit 17 that no abnormality has been detected, and ends the abnormal point identification processing.

In the above process, the abnormal part of the passenger conveyor 3 (the cause of the abnormal sound) is identified, the message is displayed on the display unit 17, the image is highlighted by a marker or the like and displayed, and the maintenance worker 4 is informed of the passenger conveyor 3. Can report abnormal points.

In the above description, the maintenance worker 4 manually switches the operation control of the passenger conveyor 3 (control panel 25), but the passenger conveyor inspection device 2 and the control panel 25 of the passenger conveyor 3 can communicate with each other. A method in which the processing unit 16 of the passenger conveyor inspection device 2 performs various controls of the passenger conveyor 3 is also possible.

As described above, according to the passenger conveyor inspection system 1 according to the present embodiment, not only the determination of the presence/absence of an abnormality of the passenger conveyor 3 but also the identification of the abnormal portion (estimation of the cause) is automatically performed, and the contents thereof Is output, the maintenance staff 4 can quickly and appropriately perform maintenance and inspection work.

(2) Other Embodiments In the above embodiment, the case where the present invention is applied to the passenger conveyor inspection system 1 has been described, but the present invention is not limited to this, and various other passengers. It can be widely applied to conveyor inspection systems.

In addition, in the above-described embodiment, a case has been described in which the operating condition of the passenger conveyor 3 (moving direction of the step 30, moving speed, etc.) is detected (acquired) from the image captured by the imaging unit 11. The invention is not limited to this, and the passenger conveyor inspection device 2 may be configured to be communicable with the control panel 25 of the passenger conveyor 3 and acquire the operation status from the control panel 25.

Further, in the above-described embodiment, the case has been described in which the order of step S17, step S20, and step S22 is determined, but the present invention is not limited to this, and the order of determination may be changed. Further, all the determinations may be performed, or some of the determinations may be performed.

Further, in the above-described embodiment, the case of recording and recording in step S12, step S19, and step S21 has been described, but the present invention is not limited to this, and recording and recording in step S19 and step S22 are performed in step S12. You may do it.

The present invention is not limited to the above-mentioned contents, and within a range not changing the gist of the invention, the configurations are appropriately combined, the order of processing is changed, or omitted so as not to perform predetermined processing, Can be changed to

1...passenger conveyor inspection system, 2...passenger conveyor inspection device, 3...passenger conveyor, 4...maintenance personnel.

Claims (8)

A passenger conveyor inspection device for inspecting a passenger conveyor,
A sound collecting unit that collects the operation sound of the passenger conveyor,
An image pickup section for picking up an image of the subject,
A display unit that displays a range in which sound can be collected by the sound collecting unit on a passenger conveyor image that shows the passenger conveyor captured by the image capturing unit,
A processing unit that identifies an abnormal portion of the passenger conveyor based on the sound collection data collected by the sound collection unit, the operating condition of the passenger conveyor, and the sound collection possible range,
An apparatus for inspecting a passenger conveyor, comprising: The processing unit frequency-analyzes the first sound collection data collected by the sound collection unit when the passenger conveyor is operating in a predetermined operation direction and a predetermined operation speed, and an abnormal sound is included. Whether or not,
The passenger conveyor inspection device according to claim 1, wherein: When the processing unit determines that the abnormal sound is included, the processing unit determines whether or not there is a correlation between the source of the abnormal sound and the operating condition of the passenger conveyor, and when it is determined that there is a correlation. Specifies that an abnormal part of the passenger conveyor is a movable part of the passenger conveyor that moves in the sound collection possible range,
The passenger conveyor inspection device according to claim 2, wherein: When the processing unit determines that the abnormal sound is included, the first sound collection data and the passenger conveyor are driven in a driving direction opposite to the predetermined driving direction and at the predetermined driving speed. It is determined whether or not there is a change in the second sound collection data collected by the sound collecting unit during the operation, and when it is determined that there is a change, the abnormal portion of the passenger conveyor is Specify that it is a sliding part of the passenger conveyor in a soundable range,
The passenger conveyor inspection device according to claim 2, wherein: When the processing unit determines that the abnormal sound is included, the first sound collection data and the passenger conveyor are operated at an operation speed different from the predetermined operation direction and the predetermined operation speed. It is determined whether or not there is a change in the third sound collection data collected by the sound collecting unit when the sound collection unit is in a Specify that it is a drive of the passenger conveyor in a possible range,
The passenger conveyor inspection device according to claim 2, wherein The processing unit is
Whether or not there is a correlation between the generation source of the abnormal sound and the operating condition of the passenger conveyor, the first sound collection data, and the passenger conveyor and the predetermined driving direction opposite to the predetermined driving direction. Whether or not there is a change in the second sound collection data collected by the sound collection unit when the vehicle is operating at the operating speed, the first sound collection data, and the passenger conveyor perform the predetermined operation. Determining whether or not there is a change in the third sound collection data collected by the sound collecting unit when the vehicle is driven at a driving speed different from the predetermined driving speed in the direction,
It is determined that the abnormal sound is included, it is determined that there is no correlation between the generation source of the abnormal sound and the operating condition of the passenger conveyor, and the first sound collection data and the second sound collection data If it is determined that there is no change in the first sound collection data and the third sound collection data does not change, the passenger in the abnormal range of the passenger conveyor in the sound collection possible range Identify it as a fixed part of the conveyor,
The passenger conveyor inspection device according to claim 2, wherein The display unit highlights the abnormal portion of the passenger conveyor specified by the processing unit,
The passenger conveyor inspection device according to claim 1, wherein: Passenger conveyor,
A sound collecting unit that collects the operation sound of the passenger conveyor,
An image pickup section for picking up an image of the subject,
A display unit that displays a range in which sound can be collected by the sound collecting unit on a passenger conveyor image that shows the passenger conveyor captured by the image capturing unit,
A processing unit that identifies an abnormal portion of the passenger conveyor based on the sound collection data collected by the sound collection unit, the operating condition of the passenger conveyor, and the sound collection possible range,
A passenger conveyor inspection system comprising:

Images