WO2019229986A1 - Escalator image surveillance system - Google Patents

Escalator image surveillance system Download PDF

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Publication number
WO2019229986A1
WO2019229986A1 PCT/JP2018/021221 JP2018021221W WO2019229986A1 WO 2019229986 A1 WO2019229986 A1 WO 2019229986A1 JP 2018021221 W JP2018021221 W JP 2018021221W WO 2019229986 A1 WO2019229986 A1 WO 2019229986A1
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WO
WIPO (PCT)
Prior art keywords
escalator
image
camera
data
monitoring system
Prior art date
Application number
PCT/JP2018/021221
Other languages
French (fr)
Japanese (ja)
Inventor
剛樹 引地
博行 村上
敬秀 平井
吉田　浩二
Original Assignee
三菱電機ビルテクノサービス株式会社
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機ビルテクノサービス株式会社, 三菱電機株式会社 filed Critical 三菱電機ビルテクノサービス株式会社
Priority to PCT/JP2018/021221 priority Critical patent/WO2019229986A1/en
Priority to JP2020522548A priority patent/JP6777268B2/en
Priority to CN201880093437.0A priority patent/CN112189339B/en
Publication of WO2019229986A1 publication Critical patent/WO2019229986A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B31/00—Accessories for escalators, or moving walkways, e.g. for sterilising or cleaning
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Definitions

  • the present invention relates to an escalator image monitoring system.
  • Patent Document 1 describes an example of an escalator image monitoring system.
  • the image monitoring system includes a cylindrical body and a camera.
  • the cylindrical body is provided at a narrow angle portion between the moving handrail of the escalator and the ceiling.
  • the camera is housed inside the cylindrical body.
  • An object of the present invention is to provide an image monitoring system capable of monitoring a wide range of escalators.
  • An image monitoring system for an escalator is directed to a support above an escalator step spanned between an upper floor and a lower floor, and a camera provided on the upper floor or the lower floor is diffused with incident light. And a reflecting mirror supported by a support with the reflecting portion facing downward so that the reflecting portion is reflected in an image photographed by the camera.
  • the image monitoring apparatus includes a camera and a reflecting mirror.
  • the camera faces the support above the steps of the escalator spanned between the upper and lower floors.
  • the camera is provided on the upper floor or the lower floor.
  • the reflecting mirror has a reflecting portion.
  • the reflector reflects the incident light so as to diverge.
  • the reflecting mirror is provided on the support so that the reflecting portion is directed downward so that the reflecting portion is reflected in an image taken by the camera. Thereby, a wide range of escalators can be monitored.
  • FIG. 1 is a configuration diagram of an image monitoring system according to Embodiment 1.
  • FIG. 6 is a diagram illustrating an example of a captured image according to Embodiment 1.
  • FIG. 6 is a diagram illustrating an example of a monitoring image according to Embodiment 1.
  • FIG. 6 is a diagram showing an example of display on the display according to Embodiment 1.
  • FIG. 3 is a flowchart illustrating an example of an operation of the image monitoring system according to the first embodiment.
  • 2 is a diagram illustrating a hardware configuration of a main part of the image monitoring system according to Embodiment 1.
  • FIG. 1 is a configuration diagram of an image monitoring system according to Embodiment 1.
  • FIG. 6 is a diagram illustrating an example of a captured image according to Embodiment 1.
  • FIG. 6 is a diagram illustrating an example of a monitoring image according to Embodiment 1.
  • FIG. 6 is a diagram showing an example of display on the display according to Embodiment 1.
  • FIG. 3
  • FIG. 1 is a configuration diagram of an escalator according to the first embodiment.
  • the left-right direction of the escalator 1 is a direction perpendicular to the paper surface.
  • the front-rear direction of the escalator 1 is the left-right direction of the paper.
  • the upper entrance 2a is provided on the upper floor.
  • the lower entrance 2b is provided on the lower floor.
  • the ceiling 3 is provided from the lower floor to the upper floor.
  • the escalator 1 includes a main frame 4, a plurality of steps 5, a pair of hand rails 6, a driving device 7, and a pair of hand rail driving devices 8.
  • the main frame 4 is spanned between the upper entrance 2a and the lower entrance 2b.
  • the main frame 4 has an upper machine room 9a and a lower machine room 9b.
  • the upper machine room 9 a is provided at the upper end of the main frame 4.
  • the upper machine room 9a is provided below the upper entrance 2a.
  • the lower machine room 9 b is provided at the lower end of the main frame 4.
  • the lower machine room 9b is provided below the lower entrance 2b.
  • the plurality of steps 5 are arranged endlessly.
  • Each of the pair of handrails 6 is provided on each of the left and right sides of the plurality of steps 5.
  • Each of the pair of handrails 6 is formed in an endless shape.
  • the driving device 7 is provided in the upper machine room 9a.
  • the drive device 7 is configured to be able to circulate and move each of the plurality of steps 5 with the upper side as the outward path.
  • Each of the pair of handrail drive devices 8 is configured to be interlocked with the drive device 7.
  • Each of the pair of handrail drive devices 8 is configured to drive each of the pair of handrails 6.
  • the image monitoring system 10 includes a reflecting mirror 11, a camera 12, an adjusting device 13, and a support column 14.
  • the reflecting mirror 11 is supported on the ceiling 3 above the plurality of steps 5 of the escalator 1.
  • the ceiling 3 is an example of a support.
  • the reflecting mirror 11 is provided above the constant inclined portion of the escalator 1.
  • the reflecting mirror 11 is, for example, a convex mirror.
  • the reflecting mirror 11 has a reflecting portion 15.
  • the reflection unit 15 reflects incident light so as to diverge. For this reason, the reflection part 15 projects a range wider than the range which the reflective surface of a plane mirror projects.
  • the reflector 15 is directed downward.
  • the camera 12 is configured so as to be able to shoot video in the direction it is facing.
  • the camera 12 is provided in the upper entrance / exit 2a, for example.
  • the camera 12 is directed to the ceiling 3.
  • the camera 12 is directed to the reflection unit 15.
  • the adjusting device 13 is provided below the camera 12.
  • the adjusting device 13 includes a motor, for example.
  • the adjusting device 13 is configured to change the orientation of the camera 12.
  • the support column 14 is provided on the upper floor.
  • pillar 14 is provided in the upper entrance / exit 2a.
  • the support columns 14 are provided on the left and right outer sides of the pair of handrails 6.
  • pillar 14 is a shape extended in a perpendicular direction.
  • the upper end of the column 14 is provided above the upper ends of the pair of handrails 6.
  • the upper end of the column 14 supports the adjustment device 13 and the camera 12.
  • the driving device 7 circulates and moves each of the plurality of steps 5 with the upper side as the outward path.
  • the plurality of steps 5 that move in the outward path are arranged in a stepped manner in the constant slope portion of the escalator 1.
  • the drive device 7 interlocks each of the pair of handrail drive devices 8.
  • Each of the pair of handrail drive devices 8 circulates and moves each of the pair of handrails 6 with the upper side as the outward path.
  • Each of the pair of handrails 6 circulates in synchronization with the plurality of steps 5.
  • the user grabs one of the pair of handrails 6 and gets on the upper surface of the step 5 from the lower entrance 2b.
  • the user moves from the lower floor to the upper floor on the step 5 moving in the forward path.
  • the user releases the gripped handrail 6 and descends from the step 5 to the upper entrance 2a.
  • the user grabs one of the pair of handrails 6 and gets on the upper surface of the step 5 from the upper entrance 2a.
  • the user moves from the upper floor to the lower floor on the step 5 moving in the forward path.
  • the user releases the grasped handrail 6 and gets off from the step 5 to the lower entrance 2b.
  • the reflection unit 15 reflects the range from the upper floor to the lower floor of the escalator 1 from above.
  • the range from the upper floor to the lower floor of the escalator 1 is, for example, a range including the constant slope portion of the escalator 1.
  • the camera 12 captures an image of the escalator 1 reflected on the reflection unit 15.
  • FIG. 2 is a configuration diagram of the image monitoring system according to the first embodiment.
  • the image monitoring system 10 includes a monitoring terminal device 16 and a control device 17.
  • the monitoring terminal device 16 is provided at a place where the monitor 18 of the escalator 1 monitors.
  • the monitoring terminal device 16 is provided in a monitoring room, for example.
  • the monitoring terminal device 16 is a general-purpose personal computer, for example.
  • the monitoring terminal device 16 includes a display 161.
  • the display 161 is configured to display an image taken by the camera 12.
  • the display 161 is configured to notify the monitor 18 of the content of the signal received by the monitoring terminal device 16 by display.
  • the control device 17 includes an extraction unit 171, a storage unit 172, a detection unit 173, a transmission unit 174, and a control unit 175.
  • the extraction unit 171 is connected to the camera 12 so as to be able to receive captured image data.
  • the captured image is an image captured by the camera 12.
  • the extraction unit 171 is configured to generate extraction range data from captured image data.
  • the extraction range data is data representing the range of the escalator 1 reflected on the reflection unit 15 in the captured image.
  • the extraction unit 171 is configured to be able to generate monitoring image data based on the extraction range data.
  • the monitoring image is an image that the monitoring person 18 monitors.
  • the storage unit 172 is configured to store extraction range data.
  • the storage unit 172 is connected to the detection unit 173 so that the extraction range data can be transmitted.
  • the detection unit 173 is connected to the storage unit 172 so as to receive the extraction range data.
  • the detection unit 173 is configured to generate difference data based on the extraction range data read from the storage unit 172 and the extraction range data received from the extraction unit 171.
  • the difference data is data representing the difference between the ranges represented by the two extraction range data.
  • the transmission unit 174 is connected to the monitoring terminal device 16 so that the monitoring data can be transmitted.
  • the monitoring data is data used by the monitor 18 for monitoring.
  • the monitoring data can include monitoring image data.
  • the control unit 175 is connected to the adjustment device 13 so that drive data can be transmitted.
  • the drive data is data that controls the operation of the adjustment device 13.
  • the control unit 175 is connected to the extraction unit 171 so that the extraction range data can be received.
  • the control unit 175 is connected to the detection unit 173 so that the difference data can be received.
  • the control unit 175 is connected to the transmission unit 174 so that the notification data can be transmitted.
  • the notification data is data representing matters to be notified to the monitor 18.
  • the monitoring data can include notification data.
  • FIG. 3 is a diagram illustrating an example of a captured image according to the first embodiment.
  • FIG. 4 is a diagram illustrating an example of a monitoring image according to the first embodiment.
  • FIG. 5 is a diagram illustrating an example of display on the display according to the first embodiment.
  • the camera 12 images the ceiling 3 and the reflecting portion 15.
  • the reflection unit 15 reflects the range from the upper floor to the lower floor of the escalator 1 from above. That is, the camera 12 captures the range from the upper floor to the lower floor of the escalator 1 from above by the reflection of the reflecting portion 15.
  • the camera 12 transmits the captured image data to the extraction unit 171.
  • the extraction unit 171 generates extraction range data from captured image data. When the extraction range data can be generated, the extraction unit 171 transmits the generated extraction range data to the detection unit 173. The extraction unit 171 generates monitoring image data based on the generated extraction range data. The extraction unit 171 transmits the monitoring image data to the control unit 175. On the other hand, when the extraction range data cannot be generated, the extraction unit 171 transmits data indicating extraction failure to the control unit 175.
  • the extraction unit 171 generates extraction range data and monitoring image data as follows, for example.
  • the extraction unit 171 stores characteristics such as the color and shape of the pair of handrails 6 in advance.
  • the extraction unit 171 detects a portion similar to the stored feature from the captured image.
  • the extraction unit 171 detects the coordinates of the detected part in the captured image as position data of each of the pair of handrails 6.
  • the extraction unit 171 generates data representing the range between each of the pair of handrails 6 as extracted range data from the detected position data. At this time, when the position data of each of the pair of handrails 6 cannot be detected, the extraction unit 171 determines that the extraction range data cannot be generated.
  • the extraction unit 171 extracts the range represented by the extraction range data from the captured image.
  • the extraction unit 171 generates data representing the extracted image as monitoring image data.
  • the storage unit 172 stores reference extraction range data.
  • the reference extraction range data is, for example, extraction range data in a state in which the range of the escalator 1 from the lower floor to the upper floor is reflected on the reflection unit 15 in the captured image.
  • the detection unit 173 reads the extraction range data from the storage unit 172.
  • the detection unit 173 generates difference data based on the difference between the extraction range data read from the storage unit 172 and the extraction range data received from the extraction unit 171.
  • the detection unit 173 attempts to detect a change in the range of the escalator 1 reflected on the reflection unit 15 in the captured image based on the difference data. On the other hand, when a change is detected, the detection unit 173 transmits difference data to the control unit 175.
  • the detection unit 173 generates differential data and detects changes as follows, for example.
  • the detection unit 173 calculates the center coordinates of the pair of handrails 6 for each of the two extraction range data.
  • the detection unit 173 generates the distance and direction between the calculated center coordinates as difference data.
  • the detection unit 173 detects a change when the distance represented in the difference data is longer than a predetermined distance.
  • control unit 175 When the control unit 175 receives monitoring image data, the control unit 175 transmits the data to the transmission unit 174 as monitoring data.
  • the control unit 175 When the control unit 175 receives the monitoring image data and the difference data, the control unit 175 generates notification data indicating that the positional relationship between the camera 12 and the reflecting mirror 11 needs to be adjusted.
  • the positional relationship between the camera 12 and the reflecting mirror 11 includes either or both of the orientation of the reflecting mirror 11 or the camera 12 and the relative position between the camera 12 and the reflecting mirror 11.
  • the control unit 175 transmits the received monitoring image data and the generated notification data to the transmission unit 174 as monitoring data.
  • the control unit 175 determines whether automatic adjustment is possible. When it is determined that automatic adjustment is possible, the control unit 175 generates drive data based on the difference data. The control unit 175 transmits the generated drive data to the adjustment device 13. On the other hand, when it is determined that automatic adjustment is not possible, the control unit 175 generates notification data indicating the automatic adjustment failure.
  • the control unit 175 transmits the generated notification data to the transmission unit 174 as monitoring data.
  • control unit 175 When the control unit 175 receives data indicating extraction failure, the control unit 175 generates notification data indicating extraction failure. The control unit 175 transmits the generated notification data to the transmission unit 174 as monitoring data.
  • the control unit 175 determines whether automatic adjustment is possible and generates drive data as follows, for example.
  • the control unit 175 determines that automatic adjustment is not possible when the detection unit 173 detects a change continuously for a predetermined number of times or more.
  • the control unit 175 calculates the direction of the camera 12 that cancels the detected change based on the distance and direction represented in the difference data.
  • the control unit 175 generates drive data for directing the camera 12 in the calculated direction.
  • the transmission unit 174 transmits the received monitoring data to the monitoring terminal device 16.
  • the monitoring terminal device 16 displays a monitoring image represented by data included in the monitoring data on the display 161.
  • the monitoring terminal device 16 notifies the monitor 18 of the content represented by the notification data by displaying on the display 161.
  • the monitoring terminal device 16 performs notification as follows, for example.
  • the monitoring terminal device 16 displays the message box 19 on the monitoring image on the display 161.
  • the monitoring terminal device 16 displays “Please adjust the camera and reflector” or the like in the message box 19 according to the content of the notification data.
  • the monitoring terminal device 16 continues to display the corresponding message box 19 while receiving the notification data having the same content.
  • the monitoring terminal device 16 continues to display the message box 19 when the monitoring data does not include monitoring image data. In this case, the monitoring image is not displayed.
  • FIG. 6 is a flowchart illustrating an example of the operation of the image monitoring system according to the first embodiment.
  • step S1 the camera 12 photographs the escalator 1 from above by the reflection of the reflecting portion 15. Thereafter, the camera 12 transmits the captured image data to the extraction unit 171. Thereafter, the operation of the image monitoring system 10 proceeds to step S2.
  • step S2 the extraction unit 171 starts generating extraction range data from the captured image data. Thereafter, the operation of the image monitoring system 10 proceeds to step S3.
  • step S3 the extraction unit 171 determines whether extraction range data has been generated.
  • the operation of the image monitoring system 10 proceeds to step S4.
  • the control unit 175 generates notification data indicating extraction failure.
  • the transmission unit 174 transmits the notification data generated by the control unit 175 to the monitoring terminal device 16 as monitoring data.
  • the operation of the image monitoring system 10 proceeds to step S9.
  • step S4 the detection unit 173 generates difference data based on the extraction range data read from the storage unit 172 and the extraction range data received from the extraction unit 171. Thereafter, the detection unit 173 starts to detect a change in the range of the escalator 1 reflected on the reflection unit 15 in the captured image based on the difference data. Thereafter, the detection unit 173 determines whether the change is detected.
  • the determination result is No
  • the operation of the image monitoring system 10 proceeds to step S5.
  • step S6 the operation of the image monitoring system 10 proceeds to step S6.
  • step S5 the transmission unit 174 transmits the monitoring image data generated by the extraction unit 171 to the monitoring terminal device 16 as monitoring data. Thereafter, the monitoring terminal device 16 displays a monitoring image. Thereafter, the operation of the image monitoring system 10 proceeds to step S1.
  • step S6 the control unit 175 generates notification data indicating that the positional relationship between the camera 12 and the reflecting mirror 11 needs to be adjusted. Thereafter, the transmission unit 174 transmits the notification data generated by the control unit 175 and the monitoring image data generated by the extraction unit 171 to the monitoring terminal device 16 as monitoring data. Thereafter, the monitoring terminal device 16 displays a monitoring image. In addition, the monitoring terminal device 16 notifies the monitor 18 of the content of the notification data. Thereafter, the operation of the image monitoring system 10 proceeds to step S7.
  • step S7 the control unit 175 determines whether automatic adjustment is possible.
  • the determination result is Yes
  • the operation of the image monitoring system 10 proceeds to step S8.
  • the control unit 175 generates notification data indicating an automatic adjustment failure.
  • the transmission unit 174 transmits the notification data generated by the control unit 175 to the monitoring terminal device 16 as monitoring data.
  • the operation of the image monitoring system 10 proceeds to step S9.
  • step S8 the control unit 175 generates drive data based on the difference data. Thereafter, the adjustment device 13 changes the direction in which the camera 12 faces based on the drive data received from the control unit 175. Thereafter, the operation of the image monitoring system 10 proceeds to step S1.
  • step S9 the monitoring terminal device 16 notifies the monitoring person 18 of the content of the notification data. Thereafter, the operation of the image monitoring system 10 ends.
  • the image monitoring system 10 includes the camera 12 and the reflecting mirror 11.
  • the camera 12 faces the ceiling 3 above the plurality of steps 5 of the escalator 1.
  • the escalator 1 is stretched between the upper floor and the lower floor.
  • the camera 12 is provided on the upper floor.
  • the reflecting mirror 11 has a reflecting portion 15.
  • the reflection unit 15 reflects incident light so as to diverge.
  • the reflecting mirror 11 is supported by the ceiling 3 with the reflecting portion 15 facing downward so that the reflecting portion 15 is reflected in a captured image taken by the camera 12.
  • the reflection unit 15 reflects the range from the upper floor to the lower floor of the escalator 1 from above.
  • the camera 12 captures an image of the escalator 1 reflected on the reflection unit 15.
  • the monitor 18 can monitor a wide range of the escalator 1 with one camera 12.
  • the reflection part 15 is provided above the escalator 1. For this reason, the captured image is an image of the escalator 1 viewed from above. Thereby, it is difficult to make a blind spot by users lined up front and rear or left and right.
  • the monitor 18 can monitor the escalator 1 more reliably.
  • the upper construction is not easy.
  • the reflecting mirror 11 provided on the ceiling 3 does not require wiring.
  • the installation of the reflecting mirror 11 on the ceiling 3 is easier than the installation of a device that requires wiring, such as a wide-angle camera. Thereby, the workability of the image monitoring system 10 is improved.
  • the image monitoring system 10 includes an extraction unit 171.
  • the extraction unit 171 extracts an image between the pair of handrails 6 from the captured image.
  • Each of the pair of handrails 6 is provided on both the left and right sides of the escalator 1.
  • the monitoring terminal device 16 can display only the monitoring images necessary for monitoring. Thereby, the supervisor 18 can concentrate on monitoring of the escalator 1 more.
  • the image monitoring system 10 can display only the monitoring image. As a result, the positional relationship between the camera 12 and the reflecting mirror 11 can be easily adjusted.
  • the image monitoring system 10 includes a monitoring terminal device 16, a detection unit 173, and a transmission unit 174.
  • the monitoring terminal device 16 notifies the monitoring staff 18 who monitors the escalator 1 of the content represented by the received notification data.
  • the detection unit 173 detects a change in the range of the escalator 1 that is reflected on the reflection unit 15 in the captured image captured by the camera 12.
  • the transmission unit 174 transmits notification data indicating that the positional relationship between the camera 12 and the reflecting mirror 11 needs to be adjusted to the monitoring terminal device 16.
  • the camera 12 is provided at the upper entrance 2a. For this reason, the direction in which the camera 12 captures may be shifted due to mischief by the passenger or collision of the passenger's luggage.
  • the supervisor 18 can quickly recognize that the positional relationship between the camera 12 and the reflecting mirror 11 has shifted. Thereby, the supervisor 18 can start the adjustment of the positional relationship between the camera 12 and the reflecting mirror 11 quickly.
  • the monitoring terminal device 16 includes a detection unit 173 and an adjustment device 13.
  • the detection unit 173 detects a change in the range of the escalator 1 that is reflected on the reflection unit 15 in the captured image captured by the camera 12.
  • the adjustment device 13 changes the orientation of the camera 12 so that the change is not detected.
  • the positional relationship between the camera 12 and the reflecting mirror 11 is automatically adjusted without waiting for the supervisor 18 to go to the site. In this case, the monitor 18 does not have to manually adjust the positional relationship between the camera 12 and the reflecting mirror 11.
  • the support column 14 is provided on the left and right outer sides of the pair of handrails 6. Thereby, a user's movement is not prevented.
  • the camera 12 is provided above the upper ends of the pair of handrails 6. Thereby, the line of sight of the camera 12 is not blocked by the pair of handrails 6. When the camera 12 is provided above the user, the line of sight of the camera 12 is not blocked by the user.
  • the support column 14 is provided on the upper floor.
  • pillar 14 is provided in the upper entrance / exit 2a.
  • the support columns 14 are provided on the left and right outer sides of the pair of handrails 6.
  • pillar 14 is a shape extended in a perpendicular direction.
  • the upper end of the column 14 is provided above the upper ends of the pair of handrails 6.
  • the upper end of the column 14 supports the adjustment device 13 and the camera 12.
  • the support may be, for example, a beam that supports the reflecting mirror 11 above the plurality of steps 5 of the escalator 1.
  • the reflecting portion 15 When the reflecting portion 15 is provided to face the center of the constant slope portion of the escalator 1, the reflecting portion 15 can reflect a wide range of the escalator 1.
  • the ceiling 3 has the same inclination as the constant inclination part of the escalator 1, the reflection part 15 faces the constant inclination part along the ceiling 3. In this case, the reflecting portion 15 is not greatly separated from the ceiling 3.
  • the reflecting mirror 11 can be fixed to the ceiling 3 with a simple structure.
  • the support may support the reflecting mirror 11 at a position lower than the top of each of the pair of handrails 6.
  • the camera 12, the adjusting device 13, and the support column 14 may be provided on the lower floor.
  • the camera 12 may be provided on the ceiling of the upper entrance 2a.
  • the upper entrance 2a has a flat floor surface. For this reason, even if the camera 12 requiring wiring is provided on the ceiling, the workability is not greatly impaired.
  • the reflecting portion 15 may be formed by a concave lens and a flat mirror. At this time, the concave lens is provided below the flat mirror.
  • the extraction unit 171 may correct the captured image distorted by the reflection unit 15. For example, the extraction unit 171 corrects the captured image so that each of the pair of handrails 6 becomes a pair of parallel straight lines.
  • the extraction unit 171 may generate monitoring image data so that each of the pair of handrails 6 is included in the monitoring image.
  • the transmission unit 174 may issue a notification by transmitting notification data to an external monitoring center.
  • the transmission unit 174 may transmit notification data representing the occurrence of an event that requires adjustment by maintenance personnel to an external monitoring center.
  • the notification data is, for example, notification data indicating extraction failure and notification data indicating automatic adjustment failure.
  • FIG. 7 is a diagram illustrating a hardware configuration of a main part of the image monitoring system according to the first embodiment.
  • Each function of the image monitoring system 10 can be realized by a processing circuit.
  • the processing circuit includes at least one processor 10b and at least one memory 10c.
  • the processing circuit may comprise at least one dedicated hardware 10a in conjunction with or as an alternative to the processor 10b and the memory 10c.
  • each function of the image monitoring system 10 is realized by software, firmware, or a combination of software and firmware. At least one of software and firmware is described as a program.
  • the program is stored in the memory 10c.
  • the processor 10b implements each function of the image monitoring system 10 by reading and executing the program stored in the memory 10c.
  • the processor 10b is also referred to as a CPU (Central Processing Unit), a processing device, an arithmetic device, a microprocessor, a microcomputer, and a DSP.
  • the memory 10c includes, for example, a nonvolatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, and EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, and a DVD.
  • the processing circuit includes the dedicated hardware 10a
  • the processing circuit is realized by, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.
  • Each function of the image monitoring system 10 can be realized by a processing circuit. Alternatively, each function of the image monitoring system 10 can be collectively realized by a processing circuit. Some of the functions of the image monitoring system 10 may be realized by dedicated hardware 10a, and the other part may be realized by software or firmware. As described above, the processing circuit realizes each function of the image monitoring system 10 with the hardware 10a, software, firmware, or a combination thereof.
  • Embodiment 2 FIG. In the second embodiment, differences from the example disclosed in the first embodiment will be described in detail. For features not described in the second embodiment, any of the features disclosed in the first embodiment may be adopted.
  • the reflection part 15 is divided into a plurality of concentric areas. Each of the plurality of divided regions of the reflecting portion 15 is configured in a concave lens shape that is shifted from each other in the thickness direction. That is, the reflecting portion 15 has a Fresnel lens structure.
  • the portion having the Fresnel lens structure of the reflecting portion 15 is made of a transparent member.
  • the reflecting portion 15 has a reflecting surface on one surface of the Fresnel lens structure.
  • the reflective surface is formed by vapor deposition of a metal such as aluminum. The surface opposite the reflecting surface is directed to the lower escalator 1.
  • the reflecting mirror 11 has a Fresnel lens structure in the reflecting portion 15. For this reason, the reflecting mirror 11 becomes thin. The reflecting mirror 11 becomes lighter. Thereby, the workability of the image monitoring system 10 is improved.
  • the reflecting mirror 11 can be fixed to the ceiling 3 with a simple structure.
  • the image monitoring system according to the present invention can be applied to an escalator.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Escalators And Moving Walkways (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Alarm Systems (AREA)

Abstract

The purpose of the present invention is to provide an image surveillance system (10) that can monitor a wide area of an escalator (1). The image surveillance system (10) comprises a camera (12) and a reflector (11). The camera (12) faces a ceiling (3), which is above steps (5) of the escalator (1). The escalator (1) links an upper flow and a lower floor. The camera (12) is provided in the upper floor. The reflector (11) has a reflecting portion (15). The reflecting portion (15) performs reflection so as to diffuse incident light. The reflector (11) is supported on the ceiling (3) with the reflecting portion (15) facing downward such that the reflecting portion (15) appears in a captured image that is captured by the camera (12).

Description

エスカレーターの画像監視システムEscalator image monitoring system
　本発明は、エスカレーターの画像監視システムに関する。 The present invention relates to an escalator image monitoring system.
　特許文献１にエスカレーターの画像監視システムの例が記載されている。画像監視システムは、筒形状体とカメラとを備える。筒形状体は、エスカレーターの移動手摺と天井との間の狭角部に設けられる。カメラは、筒形状体の内部に収納される。 Patent Document 1 describes an example of an escalator image monitoring system. The image monitoring system includes a cylindrical body and a camera. The cylindrical body is provided at a narrow angle portion between the moving handrail of the escalator and the ceiling. The camera is housed inside the cylindrical body.
日本特開２０１０－１３２８２号公報Japanese Unexamined Patent Publication No. 2010-13282
　しかしながら、特許文献１に記載の画像監視システムにおいては、エスカレーターのカメラが設けられる部分より下方または上方のいずれか一方しか監視されない。 However, in the image monitoring system described in Patent Document 1, only one of the lower side and the upper side is monitored from the portion where the camera of the escalator is provided.
　本発明は、このような課題を解決するためになされた。本発明の目的は、エスカレーターの広い範囲を監視できる画像監視システムを提供することである。 The present invention has been made to solve such problems. An object of the present invention is to provide an image monitoring system capable of monitoring a wide range of escalators.
　本発明に係るエスカレーターの画像監視システムは、上階および下階の間に掛け渡されるエスカレーターの踏段より上方の支持物を向き、上階または下階に設けられるカメラと、入射する光を発散させるように反射する反射部を有し、反射部がカメラに撮影される画像に映るように反射部を下方に向けて支持物に支持される反射鏡と、を備える。 An image monitoring system for an escalator according to the present invention is directed to a support above an escalator step spanned between an upper floor and a lower floor, and a camera provided on the upper floor or the lower floor is diffused with incident light. And a reflecting mirror supported by a support with the reflecting portion facing downward so that the reflecting portion is reflected in an image photographed by the camera.
　本発明によれば、画像監視装置は、カメラと、反射鏡と、を備える。カメラは、上階および下階の間に掛け渡されるエスカレーターの踏段より上方の支持物を向く。カメラは、上階または下階に設けられる。反射鏡は、反射部を有する。反射部は、入射する光を発散させるように反射する。反射鏡は、反射部がカメラに撮影される画像に映るように反射部を下方に向けて支持物に設けられる。これにより、エスカレーターの広い範囲を監視できる。 According to the present invention, the image monitoring apparatus includes a camera and a reflecting mirror. The camera faces the support above the steps of the escalator spanned between the upper and lower floors. The camera is provided on the upper floor or the lower floor. The reflecting mirror has a reflecting portion. The reflector reflects the incident light so as to diverge. The reflecting mirror is provided on the support so that the reflecting portion is directed downward so that the reflecting portion is reflected in an image taken by the camera. Thereby, a wide range of escalators can be monitored.
実施の形態１に係るエスカレーターの構成図である。2 is a configuration diagram of an escalator according to Embodiment 1. FIG. 実施の形態１に係る画像監視システムの構成図である。1 is a configuration diagram of an image monitoring system according to Embodiment 1. FIG. 実施の形態１に係る撮影画像の例を示す図である。6 is a diagram illustrating an example of a captured image according to Embodiment 1. FIG. 実施の形態１に係る監視画像の例を示す図である。6 is a diagram illustrating an example of a monitoring image according to Embodiment 1. FIG. 実施の形態１に係るディスプレイの表示の例を示す図である。6 is a diagram showing an example of display on the display according to Embodiment 1. FIG. 実施の形態１に係る画像監視システムの動作の例を示すフローチャートである。3 is a flowchart illustrating an example of an operation of the image monitoring system according to the first embodiment. 実施の形態１に係る画像監視システムの主要部のハードウェア構成を表す図である。2 is a diagram illustrating a hardware configuration of a main part of the image monitoring system according to Embodiment 1. FIG.
　本発明を実施するための形態について添付の図面を参照しながら説明する。各図において、同一または相当する部分には同一の符号を付して、重複する説明は適宜に簡略化または省略する。 DETAILED DESCRIPTION Embodiments for carrying out the present invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and overlapping descriptions are simplified or omitted as appropriate.
　実施の形態１．
　図１は、実施の形態１に係るエスカレーターの構成図である。 Embodiment 1 FIG.
FIG. 1 is a configuration diagram of an escalator according to the first embodiment.
　図１において、エスカレーター１の左右方向は、紙面に垂直な向きである。図１において、エスカレーター１の前後方向は、紙面の左右方向である。 In FIG. 1, the left-right direction of the escalator 1 is a direction perpendicular to the paper surface. In FIG. 1, the front-rear direction of the escalator 1 is the left-right direction of the paper.
　上部乗降口２ａは、上階に設けられる。下部乗降口２ｂは、下階に設けられる。天井３は、下階から上階にわたって設けられる。 The upper entrance 2a is provided on the upper floor. The lower entrance 2b is provided on the lower floor. The ceiling 3 is provided from the lower floor to the upper floor.
　エスカレーター１は、主枠４と、複数の踏段５と、一対のハンドレール６と、駆動装置７と、一対のハンドレール駆動装置８と、を備える。 The escalator 1 includes a main frame 4, a plurality of steps 5, a pair of hand rails 6, a driving device 7, and a pair of hand rail driving devices 8.
　主枠４は、上部乗降口２ａと下部乗降口２ｂとの間に掛け渡される。主枠４は、上部機械室９ａと下部機械室９ｂとを有する。上部機械室９ａは、主枠４の上端部に設けられる。上部機械室９ａは、上部乗降口２ａの下方に設けられる。下部機械室９ｂは、主枠４の下端部に設けられる。下部機械室９ｂは、下部乗降口２ｂの下方に設けられる。 The main frame 4 is spanned between the upper entrance 2a and the lower entrance 2b. The main frame 4 has an upper machine room 9a and a lower machine room 9b. The upper machine room 9 a is provided at the upper end of the main frame 4. The upper machine room 9a is provided below the upper entrance 2a. The lower machine room 9 b is provided at the lower end of the main frame 4. The lower machine room 9b is provided below the lower entrance 2b.
　複数の踏段５は、無端状に配置される。 The plurality of steps 5 are arranged endlessly.
　一対のハンドレール６の各々は、複数の踏段５の左右の各々に設けられる。一対のハンドレール６の各々は、無端状に形成される。 Each of the pair of handrails 6 is provided on each of the left and right sides of the plurality of steps 5. Each of the pair of handrails 6 is formed in an endless shape.
　駆動装置７は、上部機械室９ａに設けられる。駆動装置７は、上側を往路として複数の踏段５の各々を循環移動させうるように構成される。 The driving device 7 is provided in the upper machine room 9a. The drive device 7 is configured to be able to circulate and move each of the plurality of steps 5 with the upper side as the outward path.
　一対のハンドレール駆動装置８の各々は、駆動装置７に連動しうるように構成される。一対のハンドレール駆動装置８の各々は、一対のハンドレール６の各々を駆動しうるように構成される。 Each of the pair of handrail drive devices 8 is configured to be interlocked with the drive device 7. Each of the pair of handrail drive devices 8 is configured to drive each of the pair of handrails 6.
　画像監視システム１０は、反射鏡１１と、カメラ１２と、調整装置１３と、支柱１４と、を備える。 The image monitoring system 10 includes a reflecting mirror 11, a camera 12, an adjusting device 13, and a support column 14.
　反射鏡１１は、エスカレーター１の複数の踏段５より上方において天井３に支持される。天井３は、支持物の例である。反射鏡１１は、エスカレーター１の一定傾斜部の上方に設けられる。反射鏡１１は、例えば凸面鏡である。反射鏡１１は、反射部１５を有する。反射部１５は、入射する光を発散させるように反射する。このため、反射部１５は、平面鏡の反射面が映す範囲より広い範囲を映す。反射部１５は、下方に向けられる。 The reflecting mirror 11 is supported on the ceiling 3 above the plurality of steps 5 of the escalator 1. The ceiling 3 is an example of a support. The reflecting mirror 11 is provided above the constant inclined portion of the escalator 1. The reflecting mirror 11 is, for example, a convex mirror. The reflecting mirror 11 has a reflecting portion 15. The reflection unit 15 reflects incident light so as to diverge. For this reason, the reflection part 15 projects a range wider than the range which the reflective surface of a plane mirror projects. The reflector 15 is directed downward.
　カメラ１２は、向いている方向の映像を撮影しうるように構成される。カメラ１２は、例えば上部乗降口２ａに設けられる。カメラ１２は、天井３に向けられる。カメラ１２は、反射部１５に向けられる。 The camera 12 is configured so as to be able to shoot video in the direction it is facing. The camera 12 is provided in the upper entrance / exit 2a, for example. The camera 12 is directed to the ceiling 3. The camera 12 is directed to the reflection unit 15.
　調整装置１３は、カメラ１２の下方に設けられる。調整装置１３は、例えばモーターを備える。調整装置１３は、カメラ１２の向きを変えうるように構成される。 The adjusting device 13 is provided below the camera 12. The adjusting device 13 includes a motor, for example. The adjusting device 13 is configured to change the orientation of the camera 12.
　支柱１４は、上階に設けられる。支柱１４は、上部乗降口２ａに設けられる。支柱１４は、一対のハンドレール６の左右の外側に設けられる。支柱１４は、鉛直方向に延びる形状である。支柱１４の上端は、一対のハンドレール６の上端より上方に設けられる。支柱１４の上端は、調整装置１３およびカメラ１２を支持する。 The support column 14 is provided on the upper floor. The support | pillar 14 is provided in the upper entrance / exit 2a. The support columns 14 are provided on the left and right outer sides of the pair of handrails 6. The support | pillar 14 is a shape extended in a perpendicular direction. The upper end of the column 14 is provided above the upper ends of the pair of handrails 6. The upper end of the column 14 supports the adjustment device 13 and the camera 12.
　エスカレーター１の運転時に、駆動装置７は、上側を往路として複数の踏段５の各々を循環移動させる。往路を移動する複数の踏段５は、エスカレーター１の一定傾斜部において、階段状に配置される。駆動装置７は、一対のハンドレール駆動装置８の各々を連動させる。一対のハンドレール駆動装置８の各々は、上側を往路として一対のハンドレール６の各々を循環移動させる。一対のハンドレール６の各々は、複数の踏段５と同期して循環する。 During operation of the escalator 1, the driving device 7 circulates and moves each of the plurality of steps 5 with the upper side as the outward path. The plurality of steps 5 that move in the outward path are arranged in a stepped manner in the constant slope portion of the escalator 1. The drive device 7 interlocks each of the pair of handrail drive devices 8. Each of the pair of handrail drive devices 8 circulates and moves each of the pair of handrails 6 with the upper side as the outward path. Each of the pair of handrails 6 circulates in synchronization with the plurality of steps 5.
　エスカレーター１の上り運転時に、利用者は、一対のハンドレール６の一方を掴んで下部乗降口２ｂから踏段５の上面に乗る。利用者は、往路を移動する踏段５に乗って下階から上階に移動する。利用者は、掴んでいるハンドレール６を離して踏段５から上部乗降口２ａに降りる。 During the ascending operation of the escalator 1, the user grabs one of the pair of handrails 6 and gets on the upper surface of the step 5 from the lower entrance 2b. The user moves from the lower floor to the upper floor on the step 5 moving in the forward path. The user releases the gripped handrail 6 and descends from the step 5 to the upper entrance 2a.
　エスカレーター１の下り運転時に、利用者は、一対のハンドレール６の一方を掴んで上部乗降口２ａから踏段５の上面に乗る。利用者は、往路を移動する踏段５に乗って上階から下階に移動する。利用者は、掴んでいるハンドレール６を離して踏段５から下部乗降口２ｂに降りる。 When the escalator 1 is going down, the user grabs one of the pair of handrails 6 and gets on the upper surface of the step 5 from the upper entrance 2a. The user moves from the upper floor to the lower floor on the step 5 moving in the forward path. The user releases the grasped handrail 6 and gets off from the step 5 to the lower entrance 2b.
　反射部１５は、エスカレーター１の上階から下階にわたる範囲を上方から映す。エスカレーター１の上階から下階にわたる範囲は、例えばエスカレーター１の一定傾斜部を含む範囲である。カメラ１２は、反射部１５に映るエスカレーター１の画像を撮影する。 The reflection unit 15 reflects the range from the upper floor to the lower floor of the escalator 1 from above. The range from the upper floor to the lower floor of the escalator 1 is, for example, a range including the constant slope portion of the escalator 1. The camera 12 captures an image of the escalator 1 reflected on the reflection unit 15.
　続いて、図２を用いて画像監視システム１０の構成を説明する。
　図２は、実施の形態１に係る画像監視システムの構成図である。 Next, the configuration of the image monitoring system 10 will be described with reference to FIG.
FIG. 2 is a configuration diagram of the image monitoring system according to the first embodiment.
　画像監視システム１０は、監視端末装置１６と、制御装置１７と、を備える。 The image monitoring system 10 includes a monitoring terminal device 16 and a control device 17.
　監視端末装置１６は、エスカレーター１の監視員１８が監視をする場所に設けられる。監視端末装置１６は、例えば監視室に設けられる。監視端末装置１６は、例えば汎用のパーソナルコンピューターである。監視端末装置１６は、ディスプレイ１６１を備える。ディスプレイ１６１は、カメラ１２が撮影する画像を表示しうるように構成される。ディスプレイ１６１は、監視端末装置１６が受信する信号の内容を表示によって監視員１８に報知しうるように構成される。 The monitoring terminal device 16 is provided at a place where the monitor 18 of the escalator 1 monitors. The monitoring terminal device 16 is provided in a monitoring room, for example. The monitoring terminal device 16 is a general-purpose personal computer, for example. The monitoring terminal device 16 includes a display 161. The display 161 is configured to display an image taken by the camera 12. The display 161 is configured to notify the monitor 18 of the content of the signal received by the monitoring terminal device 16 by display.
　制御装置１７は、抽出部１７１と、記憶部１７２と、検知部１７３と、送信部１７４と、制御部１７５と、を備える。 The control device 17 includes an extraction unit 171, a storage unit 172, a detection unit 173, a transmission unit 174, and a control unit 175.
　抽出部１７１は、撮影画像のデータを受信しうるようにカメラ１２に接続される。撮影画像は、カメラ１２が撮影する画像である。抽出部１７１は、撮影画像のデータから抽出範囲データを生成しうるように構成される。抽出範囲データは、撮影画像において反射部１５に映るエスカレーター１の範囲を表すデータである。抽出部１７１は、抽出範囲データに基づいて監視画像のデータを生成しうるように構成される。監視画像は、監視員１８が監視をする画像である。 The extraction unit 171 is connected to the camera 12 so as to be able to receive captured image data. The captured image is an image captured by the camera 12. The extraction unit 171 is configured to generate extraction range data from captured image data. The extraction range data is data representing the range of the escalator 1 reflected on the reflection unit 15 in the captured image. The extraction unit 171 is configured to be able to generate monitoring image data based on the extraction range data. The monitoring image is an image that the monitoring person 18 monitors.
　記憶部１７２は、抽出範囲データを記憶しうるように構成される。記憶部１７２は、抽出範囲データを送信しうるように検知部１７３に接続される。 The storage unit 172 is configured to store extraction range data. The storage unit 172 is connected to the detection unit 173 so that the extraction range data can be transmitted.
　検知部１７３は、抽出範囲データを受信しうるように記憶部１７２に接続される。検知部１７３は、記憶部１７２から読み取る抽出範囲データと抽出部１７１から受信する抽出範囲データとに基づいて、差分データを生成しうるように構成される。差分データは、２つの抽出範囲データが表す範囲の差分を表すデータである。 The detection unit 173 is connected to the storage unit 172 so as to receive the extraction range data. The detection unit 173 is configured to generate difference data based on the extraction range data read from the storage unit 172 and the extraction range data received from the extraction unit 171. The difference data is data representing the difference between the ranges represented by the two extraction range data.
　送信部１７４は、監視データを送信しうるように監視端末装置１６に接続される。監視データは、監視員１８が監視に用いるデータである。監視データは、監視画像のデータを含みうる。 The transmission unit 174 is connected to the monitoring terminal device 16 so that the monitoring data can be transmitted. The monitoring data is data used by the monitor 18 for monitoring. The monitoring data can include monitoring image data.
　制御部１７５は、駆動データを送信しうるように調整装置１３に接続される。駆動データは、調整装置１３の動作を制御するデータである。制御部１７５は、抽出範囲データを受信しうるように抽出部１７１に接続される。制御部１７５は、差分データを受信しうるように検知部１７３に接続される。制御部１７５は、報知データを送信しうるように送信部１７４に接続される。報知データは、監視員１８に報知する事項を表すデータである。監視データは、報知データを含みうる。 The control unit 175 is connected to the adjustment device 13 so that drive data can be transmitted. The drive data is data that controls the operation of the adjustment device 13. The control unit 175 is connected to the extraction unit 171 so that the extraction range data can be received. The control unit 175 is connected to the detection unit 173 so that the difference data can be received. The control unit 175 is connected to the transmission unit 174 so that the notification data can be transmitted. The notification data is data representing matters to be notified to the monitor 18. The monitoring data can include notification data.
　続いて、図３から図４を用いて、画像監視システム１０の機能を説明する。
　図３は、実施の形態１に係る撮影画像の例を示す図である。図４は、実施の形態１に係る監視画像の例を示す図である。図５は、実施の形態１に係るディスプレイの表示の例を示す図である。 Next, functions of the image monitoring system 10 will be described with reference to FIGS. 3 to 4.
FIG. 3 is a diagram illustrating an example of a captured image according to the first embodiment. FIG. 4 is a diagram illustrating an example of a monitoring image according to the first embodiment. FIG. 5 is a diagram illustrating an example of display on the display according to the first embodiment.
　図３に示されるように、カメラ１２は、天井３および反射部１５を撮影する。反射部１５は、エスカレーター１の上階から下階にわたる範囲を上方から映している。すなわち、カメラ１２は、反射部１５の反射によって、エスカレーター１の上階から下階にわたる範囲を上方から撮影する。カメラ１２は、撮影画像のデータを抽出部１７１に送信する。 As shown in FIG. 3, the camera 12 images the ceiling 3 and the reflecting portion 15. The reflection unit 15 reflects the range from the upper floor to the lower floor of the escalator 1 from above. That is, the camera 12 captures the range from the upper floor to the lower floor of the escalator 1 from above by the reflection of the reflecting portion 15. The camera 12 transmits the captured image data to the extraction unit 171.
　抽出部１７１は、撮影画像のデータから抽出範囲データを生成する。抽出範囲データが生成できた場合に、抽出部１７１は、生成した抽出範囲データを検知部１７３に送信する。抽出部１７１は、生成した抽出範囲データに基づいて監視画像のデータを生成する。抽出部１７１は、監視画像のデータを制御部１７５に送信する。一方、抽出範囲データが生成できなかった場合に、抽出部１７１は、抽出失敗を表すデータを制御部１７５に送信する。 The extraction unit 171 generates extraction range data from captured image data. When the extraction range data can be generated, the extraction unit 171 transmits the generated extraction range data to the detection unit 173. The extraction unit 171 generates monitoring image data based on the generated extraction range data. The extraction unit 171 transmits the monitoring image data to the control unit 175. On the other hand, when the extraction range data cannot be generated, the extraction unit 171 transmits data indicating extraction failure to the control unit 175.
　抽出部１７１は、例えば次のように抽出範囲データおよび監視画像のデータを生成する。抽出部１７１は、一対のハンドレール６の色および形状などの特徴を予め記憶している。抽出部１７１は、記憶している特徴に類似する部分を撮影画像から検出する。抽出部１７１は、撮影画像における検出した部分の座標を、一対のハンドレール６の各々の位置データとして検出する。抽出部１７１は、検出した位置データから、一対のハンドレール６の各々の間の範囲を表すデータを抽出範囲データとして生成する。このとき、一対のハンドレール６の各々の位置データが検出できない場合に、抽出部１７１は、抽出範囲データが生成できないと判定する。一対のハンドレール６の各々の位置データが検出できない場合は、例えば一対のハンドレール６の少なくとも一方が撮影画像に映っていない場合である。抽出部１７１は、撮影画像から抽出範囲データが表す範囲を抽出する。抽出部１７１は、抽出した画像を表すデータを監視画像のデータとして生成する。 The extraction unit 171 generates extraction range data and monitoring image data as follows, for example. The extraction unit 171 stores characteristics such as the color and shape of the pair of handrails 6 in advance. The extraction unit 171 detects a portion similar to the stored feature from the captured image. The extraction unit 171 detects the coordinates of the detected part in the captured image as position data of each of the pair of handrails 6. The extraction unit 171 generates data representing the range between each of the pair of handrails 6 as extracted range data from the detected position data. At this time, when the position data of each of the pair of handrails 6 cannot be detected, the extraction unit 171 determines that the extraction range data cannot be generated. The case where the position data of each of the pair of handrails 6 cannot be detected is, for example, the case where at least one of the pair of handrails 6 is not shown in the captured image. The extraction unit 171 extracts the range represented by the extraction range data from the captured image. The extraction unit 171 generates data representing the extracted image as monitoring image data.
　図４に示されるように、監視画像のデータにおいて、一対のハンドレール６の各々の間の画像が抽出される。 4, an image between each of the pair of handrails 6 is extracted from the monitoring image data.
　記憶部１７２は、基準となる抽出範囲データを記憶している。基準となる抽出範囲データは、例えば、撮影画像において下階から上階にわたるエスカレーター１の範囲が反射部１５に映っている状態の抽出範囲データである。 The storage unit 172 stores reference extraction range data. The reference extraction range data is, for example, extraction range data in a state in which the range of the escalator 1 from the lower floor to the upper floor is reflected on the reflection unit 15 in the captured image.
　検知部１７３は、抽出範囲データを記憶部１７２から読み取る。検知部１７３は、記憶部１７２から読み取った抽出範囲データと抽出部１７１から受信した抽出範囲データとの差異に基づいて差分データを生成する。検知部１７３は、差分データに基づいて、撮影画像において反射部１５に映るエスカレーター１の範囲の変化の検知を試みる。一方、変化が検知される場合に、検知部１７３は、制御部１７５に差分データを送信する。 The detection unit 173 reads the extraction range data from the storage unit 172. The detection unit 173 generates difference data based on the difference between the extraction range data read from the storage unit 172 and the extraction range data received from the extraction unit 171. The detection unit 173 attempts to detect a change in the range of the escalator 1 reflected on the reflection unit 15 in the captured image based on the difference data. On the other hand, when a change is detected, the detection unit 173 transmits difference data to the control unit 175.
　検知部１７３は、例えば次のように差分データの生成および変化の検知を行う。検知部１７３は、２つの抽出範囲データの各々について、一対のハンドレール６の中心座標を算出する。検知部１７３は、算出した中心座標の各々の間の距離および方向を、差分データとして生成する。検知部１７３は、差分データに表される距離が予め定められた距離より長い場合に、変化を検知する。 The detection unit 173 generates differential data and detects changes as follows, for example. The detection unit 173 calculates the center coordinates of the pair of handrails 6 for each of the two extraction range data. The detection unit 173 generates the distance and direction between the calculated center coordinates as difference data. The detection unit 173 detects a change when the distance represented in the difference data is longer than a predetermined distance.
　制御部１７５は、監視画像のデータを受信した場合に、当該データを監視データとして送信部１７４に送信する。 When the control unit 175 receives monitoring image data, the control unit 175 transmits the data to the transmission unit 174 as monitoring data.
　制御部１７５は、監視画像のデータおよび差分データを受信した場合に、カメラ１２および反射鏡１１の位置関係が調整を要することを表す報知データを生成する。カメラ１２および反射鏡１１の位置関係は、反射鏡１１もしくはカメラ１２の向き、または、カメラ１２および反射鏡１１の間の相対的な位置、のいずれかまたは両方を含む。制御部１７５は、受信した監視画像のデータと生成した報知データとを監視データとして送信部１７４に送信する。制御部１７５は、自動調整の可否を判定する。自動調整が可能であると判定した場合に、制御部１７５は、差分データに基づいて駆動データを生成する。制御部１７５は、生成した駆動データを調整装置１３に送信する。一方、自動調整が不可であると判定した場合に、制御部１７５は、自動調整失敗を表す報知データを生成する。制御部１７５は、生成した報知データを監視データとして送信部１７４に送信する。 When the control unit 175 receives the monitoring image data and the difference data, the control unit 175 generates notification data indicating that the positional relationship between the camera 12 and the reflecting mirror 11 needs to be adjusted. The positional relationship between the camera 12 and the reflecting mirror 11 includes either or both of the orientation of the reflecting mirror 11 or the camera 12 and the relative position between the camera 12 and the reflecting mirror 11. The control unit 175 transmits the received monitoring image data and the generated notification data to the transmission unit 174 as monitoring data. The control unit 175 determines whether automatic adjustment is possible. When it is determined that automatic adjustment is possible, the control unit 175 generates drive data based on the difference data. The control unit 175 transmits the generated drive data to the adjustment device 13. On the other hand, when it is determined that automatic adjustment is not possible, the control unit 175 generates notification data indicating the automatic adjustment failure. The control unit 175 transmits the generated notification data to the transmission unit 174 as monitoring data.
　制御部１７５は、抽出失敗を表すデータを受信した場合に、抽出失敗を表す報知データを生成する。制御部１７５は、生成した報知データを監視データとして送信部１７４に送信する。 When the control unit 175 receives data indicating extraction failure, the control unit 175 generates notification data indicating extraction failure. The control unit 175 transmits the generated notification data to the transmission unit 174 as monitoring data.
　制御部１７５は、例えば次のように自動調整の可否の判定および駆動データの生成を行う。制御部１７５は、予め定めた回数以上連続して検知部１７３が変化を検知した場合に、自動調整が不可であると判定する。制御部１７５は、差分データに表される距離および方向に基づいて、検知された変化を打ち消すカメラ１２の方向を算出する。制御部１７５は、算出された方向にカメラ１２を向ける駆動データを生成する。 The control unit 175 determines whether automatic adjustment is possible and generates drive data as follows, for example. The control unit 175 determines that automatic adjustment is not possible when the detection unit 173 detects a change continuously for a predetermined number of times or more. The control unit 175 calculates the direction of the camera 12 that cancels the detected change based on the distance and direction represented in the difference data. The control unit 175 generates drive data for directing the camera 12 in the calculated direction.
　送信部１７４は、受信した監視データを監視端末装置１６に送信する。 The transmission unit 174 transmits the received monitoring data to the monitoring terminal device 16.
　図５に示されるように、監視端末装置１６は、監視データに含まれるデータが表す監視画像をディスプレイ１６１に表示する。監視データが報知データを含む場合に、監視端末装置１６は、ディスプレイ１６１の表示によって報知データが表す内容を監視員１８に報知する。 As shown in FIG. 5, the monitoring terminal device 16 displays a monitoring image represented by data included in the monitoring data on the display 161. When the monitoring data includes notification data, the monitoring terminal device 16 notifies the monitor 18 of the content represented by the notification data by displaying on the display 161.
　監視端末装置１６は、例えば次のように報知を行う。監視端末装置１６は、監視画像にメッセージボックス１９を重ねてディスプレイ１６１に表示する。監視端末装置１６は、報知データの内容に応じて、メッセージボックス１９に「カメラと反射鏡を調整してください」などと表示する。監視端末装置１６は、同じ内容の報知データを受信している間、対応するメッセージボックス１９の表示を継続する。監視端末装置１６は、監視データが監視画像のデータを含まない場合に、メッセージボックス１９の表示を継続する。この場合、監視画像は表示されない。 The monitoring terminal device 16 performs notification as follows, for example. The monitoring terminal device 16 displays the message box 19 on the monitoring image on the display 161. The monitoring terminal device 16 displays “Please adjust the camera and reflector” or the like in the message box 19 according to the content of the notification data. The monitoring terminal device 16 continues to display the corresponding message box 19 while receiving the notification data having the same content. The monitoring terminal device 16 continues to display the message box 19 when the monitoring data does not include monitoring image data. In this case, the monitoring image is not displayed.
　続いて、図６を用いて実施の形態１に係る画像監視システム１０の動作の例を説明する。
　図６は、実施の形態１に係る画像監視システムの動作の例を示すフローチャートである。 Next, an example of the operation of the image monitoring system 10 according to the first embodiment will be described with reference to FIG.
FIG. 6 is a flowchart illustrating an example of the operation of the image monitoring system according to the first embodiment.
　ステップＳ１において、カメラ１２は、反射部１５の反射によって、エスカレーター１を上方から撮影する。その後、カメラ１２は、撮影画像のデータを抽出部１７１に送信する。その後、画像監視システム１０の動作は、ステップＳ２に進む。 In step S1, the camera 12 photographs the escalator 1 from above by the reflection of the reflecting portion 15. Thereafter, the camera 12 transmits the captured image data to the extraction unit 171. Thereafter, the operation of the image monitoring system 10 proceeds to step S2.
　ステップＳ２において、抽出部１７１は、撮影画像のデータから抽出範囲データの生成を開始する。その後、画像監視システム１０の動作は、ステップＳ３に進む。 In step S2, the extraction unit 171 starts generating extraction range data from the captured image data. Thereafter, the operation of the image monitoring system 10 proceeds to step S3.
　ステップＳ３において、抽出部１７１は、抽出範囲データの生成ができたかを判定する。判定結果がＹｅｓの場合に、画像監視システム１０の動作は、ステップＳ４に進む。判定結果がＮｏの場合に、制御部１７５は、抽出失敗を表す報知データを生成する。その後、送信部１７４は、制御部１７５が生成した報知データを監視データとして監視端末装置１６に送信する。その後、画像監視システム１０の動作は、ステップＳ９に進む。 In step S3, the extraction unit 171 determines whether extraction range data has been generated. When the determination result is Yes, the operation of the image monitoring system 10 proceeds to step S4. When the determination result is No, the control unit 175 generates notification data indicating extraction failure. Thereafter, the transmission unit 174 transmits the notification data generated by the control unit 175 to the monitoring terminal device 16 as monitoring data. Thereafter, the operation of the image monitoring system 10 proceeds to step S9.
　ステップＳ４において、検知部１７３は、記憶部１７２から読み取った抽出範囲データと抽出部１７１から受信した抽出範囲データとに基づいて差分データを生成する。その後、検知部１７３は、差分データに基づいて撮影画像において反射部１５に映るエスカレーター１の範囲の変化の検知を開始する。その後、検知部１７３は、当該変化が検知されたかを判定する。判定結果がＮｏの場合に、画像監視システム１０の動作は、ステップＳ５に進む。判定結果がＹｅｓの場合に、画像監視システム１０の動作は、ステップＳ６に進む。 In step S4, the detection unit 173 generates difference data based on the extraction range data read from the storage unit 172 and the extraction range data received from the extraction unit 171. Thereafter, the detection unit 173 starts to detect a change in the range of the escalator 1 reflected on the reflection unit 15 in the captured image based on the difference data. Thereafter, the detection unit 173 determines whether the change is detected. When the determination result is No, the operation of the image monitoring system 10 proceeds to step S5. When the determination result is Yes, the operation of the image monitoring system 10 proceeds to step S6.
　ステップＳ５において、送信部１７４は、抽出部１７１が生成した監視画像のデータを監視データとして監視端末装置１６に送信する。その後、監視端末装置１６は監視画像を表示する。その後、画像監視システム１０の動作は、ステップＳ１に進む。 In step S5, the transmission unit 174 transmits the monitoring image data generated by the extraction unit 171 to the monitoring terminal device 16 as monitoring data. Thereafter, the monitoring terminal device 16 displays a monitoring image. Thereafter, the operation of the image monitoring system 10 proceeds to step S1.
　ステップＳ６において、制御部１７５は、カメラ１２および反射鏡１１の位置関係が調整を要することを表す報知データを生成する。その後、送信部１７４は、制御部１７５が生成した報知データと抽出部１７１が生成した監視画像のデータとを監視データとして監視端末装置１６に送信する。その後、監視端末装置１６は監視画像を表示する。また、監視端末装置１６は、報知データの内容を監視員１８に報知する。その後、画像監視システム１０の動作は、ステップＳ７に進む。 In step S6, the control unit 175 generates notification data indicating that the positional relationship between the camera 12 and the reflecting mirror 11 needs to be adjusted. Thereafter, the transmission unit 174 transmits the notification data generated by the control unit 175 and the monitoring image data generated by the extraction unit 171 to the monitoring terminal device 16 as monitoring data. Thereafter, the monitoring terminal device 16 displays a monitoring image. In addition, the monitoring terminal device 16 notifies the monitor 18 of the content of the notification data. Thereafter, the operation of the image monitoring system 10 proceeds to step S7.
　ステップＳ７において、制御部１７５は、自動調整が可能かを判定する。判定結果がＹｅｓの場合に、画像監視システム１０の動作は、ステップＳ８に進む。判定結果がＮｏの場合に、制御部１７５は、自動調整失敗を表す報知データを生成する。その後、送信部１７４は、制御部１７５が生成した報知データを監視データとして監視端末装置１６に送信する。その後、画像監視システム１０の動作は、ステップＳ９に進む。 In step S7, the control unit 175 determines whether automatic adjustment is possible. When the determination result is Yes, the operation of the image monitoring system 10 proceeds to step S8. When the determination result is No, the control unit 175 generates notification data indicating an automatic adjustment failure. Thereafter, the transmission unit 174 transmits the notification data generated by the control unit 175 to the monitoring terminal device 16 as monitoring data. Thereafter, the operation of the image monitoring system 10 proceeds to step S9.
　ステップＳ８において、制御部１７５は、差分データに基づいて駆動データを生成する。その後、調整装置１３は、制御部１７５から受信する駆動データに基づいて、カメラ１２が向く方向を変える。その後、画像監視システム１０の動作は、ステップＳ１に進む。 In step S8, the control unit 175 generates drive data based on the difference data. Thereafter, the adjustment device 13 changes the direction in which the camera 12 faces based on the drive data received from the control unit 175. Thereafter, the operation of the image monitoring system 10 proceeds to step S1.
　ステップＳ９において、監視端末装置１６は、報知データの内容を監視員１８に報知する。その後、画像監視システム１０の動作は、終了する。 In step S9, the monitoring terminal device 16 notifies the monitoring person 18 of the content of the notification data. Thereafter, the operation of the image monitoring system 10 ends.
　以上に説明したように、実施の形態１に係る画像監視システム１０は、カメラ１２と、反射鏡１１と、を備える。カメラ１２は、エスカレーター１の複数の踏段５より上方の天井３を向く。エスカレーター１は、上階および下階の間に掛け渡される。カメラ１２は、上階に設けられる。反射鏡１１は、反射部１５を有する。反射部１５は、入射する光を発散させるように反射する。反射鏡１１は、反射部１５がカメラ１２に撮影される撮影画像に映るように反射部１５を下方に向けて天井３に支持される。 As described above, the image monitoring system 10 according to the first embodiment includes the camera 12 and the reflecting mirror 11. The camera 12 faces the ceiling 3 above the plurality of steps 5 of the escalator 1. The escalator 1 is stretched between the upper floor and the lower floor. The camera 12 is provided on the upper floor. The reflecting mirror 11 has a reflecting portion 15. The reflection unit 15 reflects incident light so as to diverge. The reflecting mirror 11 is supported by the ceiling 3 with the reflecting portion 15 facing downward so that the reflecting portion 15 is reflected in a captured image taken by the camera 12.
　反射部１５は、エスカレーター１の上階から下階にわたる範囲を上方から映す。カメラ１２は、反射部１５に映るエスカレーター１の画像を撮影する。これにより、監視員１８は、１台のカメラ１２でエスカレーター１の広い範囲の監視ができる。 The reflection unit 15 reflects the range from the upper floor to the lower floor of the escalator 1 from above. The camera 12 captures an image of the escalator 1 reflected on the reflection unit 15. As a result, the monitor 18 can monitor a wide range of the escalator 1 with one camera 12.
　反射部１５は、エスカレーター１より上方に設けられる。このため、撮影画像は、エスカレーター１を上方から見る画像になる。これにより、前後または左右に並ぶ利用者による死角ができにくい。監視員１８は、より確実にエスカレーター１の監視ができる。 The reflection part 15 is provided above the escalator 1. For this reason, the captured image is an image of the escalator 1 viewed from above. Thereby, it is difficult to make a blind spot by users lined up front and rear or left and right. The monitor 18 can monitor the escalator 1 more reliably.
　エスカレーター１の一定傾斜部は、複数の踏段５が階段状に形成されるため、上方の施工が容易でない。ここで、天井３に設けられる反射鏡１１は、配線を必要としない。このため、反射鏡１１の天井３への設置は、広角カメラなどの配線を必要とする機器の設置より容易である。これにより、画像監視システム１０の施工性が高くなる。 Since the plurality of steps 5 are formed in a staircase shape in the constant inclined portion of the escalator 1, the upper construction is not easy. Here, the reflecting mirror 11 provided on the ceiling 3 does not require wiring. For this reason, the installation of the reflecting mirror 11 on the ceiling 3 is easier than the installation of a device that requires wiring, such as a wide-angle camera. Thereby, the workability of the image monitoring system 10 is improved.
　また、画像監視システム１０は、抽出部１７１を備える。抽出部１７１は、撮影画像から一対のハンドレール６の間の画像を抽出する。一対のハンドレール６の各々は、エスカレーター１の左右の両側に設けられる。 In addition, the image monitoring system 10 includes an extraction unit 171. The extraction unit 171 extracts an image between the pair of handrails 6 from the captured image. Each of the pair of handrails 6 is provided on both the left and right sides of the escalator 1.
　このため、監視端末装置１６は、監視に必要な監視画像のみを表示できる。これにより、監視員１８は、よりエスカレーター１の監視に集中できる。カメラ１２と反射鏡１１との位置関係を調整する場合に、画像監視システム１０は、監視画像のみを表示できる。これにより、カメラ１２と反射鏡１１との位置関係の調整がしやすくなる。 For this reason, the monitoring terminal device 16 can display only the monitoring images necessary for monitoring. Thereby, the supervisor 18 can concentrate on monitoring of the escalator 1 more. When adjusting the positional relationship between the camera 12 and the reflecting mirror 11, the image monitoring system 10 can display only the monitoring image. As a result, the positional relationship between the camera 12 and the reflecting mirror 11 can be easily adjusted.
　また、画像監視システム１０は、監視端末装置１６と、検知部１７３と、送信部１７４と、を備える。監視端末装置１６は、受信する報知データが表す内容をエスカレーター１の監視をする監視員１８に報知する。検知部１７３は、カメラ１２に撮影される撮影画像において反射部１５に映るエスカレーター１の範囲の変化を検知する。検知部１７３が当該変化を検知する場合に、送信部１７４は、カメラ１２および反射鏡１１の位置関係が調整を要することを表す報知データを監視端末装置１６に送信する。 Further, the image monitoring system 10 includes a monitoring terminal device 16, a detection unit 173, and a transmission unit 174. The monitoring terminal device 16 notifies the monitoring staff 18 who monitors the escalator 1 of the content represented by the received notification data. The detection unit 173 detects a change in the range of the escalator 1 that is reflected on the reflection unit 15 in the captured image captured by the camera 12. When the detection unit 173 detects the change, the transmission unit 174 transmits notification data indicating that the positional relationship between the camera 12 and the reflecting mirror 11 needs to be adjusted to the monitoring terminal device 16.
　カメラ１２は上部乗降口２ａに設けられる。このため、カメラ１２が撮影する方向は、乗客による悪戯または乗客の荷物の衝突などにより、ずれてしまうことがある。このとき、監視員１８は、カメラ１２および反射鏡１１の位置関係がずれたことを速やかに認識できる。これにより、監視員１８は、カメラ１２および反射鏡１１の位置関係の調整を速やかに開始できる。 The camera 12 is provided at the upper entrance 2a. For this reason, the direction in which the camera 12 captures may be shifted due to mischief by the passenger or collision of the passenger's luggage. At this time, the supervisor 18 can quickly recognize that the positional relationship between the camera 12 and the reflecting mirror 11 has shifted. Thereby, the supervisor 18 can start the adjustment of the positional relationship between the camera 12 and the reflecting mirror 11 quickly.
　また、監視端末装置１６は、検知部１７３と、調整装置１３と、を備える。検知部１７３は、カメラ１２に撮影される撮影画像において反射部１５に映るエスカレーター１の範囲の変化を検知する。検知部１７３が当該変化を検知する場合に、調整装置１３は、当該変化が検知されなくなるようにカメラ１２の向きを変える。 Further, the monitoring terminal device 16 includes a detection unit 173 and an adjustment device 13. The detection unit 173 detects a change in the range of the escalator 1 that is reflected on the reflection unit 15 in the captured image captured by the camera 12. When the detection unit 173 detects the change, the adjustment device 13 changes the orientation of the camera 12 so that the change is not detected.
　このため、監視員１８が現場に出向くことを待つことなく、カメラ１２および反射鏡１１の位置関係が自動で調整される。この場合に、監視員１８は、カメラ１２および反射鏡１１の位置関係の調整を手動で行わなくてもよい。 Therefore, the positional relationship between the camera 12 and the reflecting mirror 11 is automatically adjusted without waiting for the supervisor 18 to go to the site. In this case, the monitor 18 does not have to manually adjust the positional relationship between the camera 12 and the reflecting mirror 11.
　支柱１４は、一対のハンドレール６の左右の外側に設けられる。これにより、利用者の移動を妨げない。カメラ１２は、一対のハンドレール６の上端より上方に設けられる。これにより、一対のハンドレール６によってカメラ１２の視線が遮られない。カメラ１２が利用者より上方に設けられる場合に、利用者によってカメラ１２の視線が遮られない。 The support column 14 is provided on the left and right outer sides of the pair of handrails 6. Thereby, a user's movement is not prevented. The camera 12 is provided above the upper ends of the pair of handrails 6. Thereby, the line of sight of the camera 12 is not blocked by the pair of handrails 6. When the camera 12 is provided above the user, the line of sight of the camera 12 is not blocked by the user.
　支柱１４は、上階に設けられる。支柱１４は、上部乗降口２ａに設けられる。支柱１４は、一対のハンドレール６の左右の外側に設けられる。支柱１４は、鉛直方向に延びる形状である。支柱１４の上端は、一対のハンドレール６の上端より上方に設けられる。支柱１４の上端は、調整装置１３およびカメラ１２を支持する。 The support column 14 is provided on the upper floor. The support | pillar 14 is provided in the upper entrance / exit 2a. The support columns 14 are provided on the left and right outer sides of the pair of handrails 6. The support | pillar 14 is a shape extended in a perpendicular direction. The upper end of the column 14 is provided above the upper ends of the pair of handrails 6. The upper end of the column 14 supports the adjustment device 13 and the camera 12.
　なお、支持物は、エスカレーター１の複数の踏段５の上方で反射鏡１１を支持する例えば梁であってもよい。反射部１５がエスカレーター１の一定傾斜部の中央に対向して設けられる場合に、反射部１５はエスカレーター１の広い範囲を映すことができる。天井３がエスカレーター１の一定傾斜部と同じ傾斜を有する場合に、反射部１５は天井３に沿うことで一定傾斜部に対向する。この場合に、反射部１５は、天井３から大きく離れない。このとき、反射鏡１１は、天井３に簡易な構造で固定できる。支持物は、一対のハンドレール６の各々の最上部より低い位置において反射鏡１１を支持してもよい。 The support may be, for example, a beam that supports the reflecting mirror 11 above the plurality of steps 5 of the escalator 1. When the reflecting portion 15 is provided to face the center of the constant slope portion of the escalator 1, the reflecting portion 15 can reflect a wide range of the escalator 1. When the ceiling 3 has the same inclination as the constant inclination part of the escalator 1, the reflection part 15 faces the constant inclination part along the ceiling 3. In this case, the reflecting portion 15 is not greatly separated from the ceiling 3. At this time, the reflecting mirror 11 can be fixed to the ceiling 3 with a simple structure. The support may support the reflecting mirror 11 at a position lower than the top of each of the pair of handrails 6.
　カメラ１２、調整装置１３および支柱１４は、下階に設けられてもよい。 The camera 12, the adjusting device 13, and the support column 14 may be provided on the lower floor.
　カメラ１２は、上部乗降口２ａの天井に設けられてもよい。上部乗降口２ａは、平坦な床面を有する。このため、配線を要するカメラ１２を天井に設けても施工性は大きく損なわれない。 The camera 12 may be provided on the ceiling of the upper entrance 2a. The upper entrance 2a has a flat floor surface. For this reason, even if the camera 12 requiring wiring is provided on the ceiling, the workability is not greatly impaired.
　反射部１５は、凹レンズと平坦な鏡とによって形成されてもよい。このとき、凹レンズは、平坦な鏡の下方に設けられる。 The reflecting portion 15 may be formed by a concave lens and a flat mirror. At this time, the concave lens is provided below the flat mirror.
　抽出部１７１は、反射部１５によって歪む撮影画像を補正してもよい。抽出部１７１は、例えば一対のハンドレール６の各々が一対の平行な直線の各々となるように撮影画像を補正する。 The extraction unit 171 may correct the captured image distorted by the reflection unit 15. For example, the extraction unit 171 corrects the captured image so that each of the pair of handrails 6 becomes a pair of parallel straight lines.
　抽出部１７１は、監視画像に一対のハンドレール６の各々を含むように監視画像のデータを生成してもよい。 The extraction unit 171 may generate monitoring image data so that each of the pair of handrails 6 is included in the monitoring image.
　送信部１７４は、外部の監視センターに報知データを送信することで発報してもよい。送信部１７４は、保守員による調整が必要な事象の発生を表す報知データを外部の監視センターに送信してもよい。当該報知データは、例えば抽出失敗を表す報知データおよび自動調整失敗を表す報知データである。 The transmission unit 174 may issue a notification by transmitting notification data to an external monitoring center. The transmission unit 174 may transmit notification data representing the occurrence of an event that requires adjustment by maintenance personnel to an external monitoring center. The notification data is, for example, notification data indicating extraction failure and notification data indicating automatic adjustment failure.
　続いて、図７を用いて画像監視システム１０のハードウェア構成の例について説明する。
　図７は、実施の形態１に係る画像監視システムの主要部のハードウェア構成を示す図である。 Next, an example of the hardware configuration of the image monitoring system 10 will be described with reference to FIG.
FIG. 7 is a diagram illustrating a hardware configuration of a main part of the image monitoring system according to the first embodiment.
　画像監視システム１０の各機能は、処理回路により実現し得る。処理回路は、少なくとも１つのプロセッサ１０ｂと少なくとも１つのメモリ１０ｃとを備える。処理回路は、プロセッサ１０ｂおよびメモリ１０ｃと共に、あるいはそれらの代用として、少なくとも１つの専用のハードウェア１０ａを備えてもよい。 Each function of the image monitoring system 10 can be realized by a processing circuit. The processing circuit includes at least one processor 10b and at least one memory 10c. The processing circuit may comprise at least one dedicated hardware 10a in conjunction with or as an alternative to the processor 10b and the memory 10c.
　処理回路がプロセッサ１０ｂとメモリ１０ｃとを備える場合、画像監視システム１０の各機能は、ソフトウェア、ファームウェア、またはソフトウェアとファームウェアとの組み合わせで実現される。ソフトウェアおよびファームウェアの少なくとも一方は、プログラムとして記述される。そのプログラムはメモリ１０ｃに格納される。プロセッサ１０ｂは、メモリ１０ｃに記憶されたプログラムを読み出して実行することにより、画像監視システム１０の各機能を実現する。 When the processing circuit includes the processor 10b and the memory 10c, each function of the image monitoring system 10 is realized by software, firmware, or a combination of software and firmware. At least one of software and firmware is described as a program. The program is stored in the memory 10c. The processor 10b implements each function of the image monitoring system 10 by reading and executing the program stored in the memory 10c.
　プロセッサ１０ｂは、ＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ）、処理装置、演算装置、マイクロプロセッサ、マイクロコンピュータ、ＤＳＰともいう。メモリ１０ｃは、例えば、ＲＡＭ、ＲＯＭ、フラッシュメモリ、ＥＰＲＯＭ、ＥＥＰＲＯＭ等の、不揮発性または揮発性の半導体メモリ、磁気ディスク、フレキシブルディスク、光ディスク、コンパクトディスク、ミニディスク、ＤＶＤ等により構成される。 The processor 10b is also referred to as a CPU (Central Processing Unit), a processing device, an arithmetic device, a microprocessor, a microcomputer, and a DSP. The memory 10c includes, for example, a nonvolatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, and EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, and a DVD.
　処理回路が専用のハードウェア１０ａを備える場合、処理回路は、例えば、単一回路、複合回路、プログラム化したプロセッサ、並列プログラム化したプロセッサ、ＡＳＩＣ、ＦＰＧＡ、またはこれらの組み合わせで実現される。 When the processing circuit includes the dedicated hardware 10a, the processing circuit is realized by, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.
　画像監視システム１０の各機能は、それぞれ処理回路で実現することができる。あるいは、画像監視システム１０の各機能は、まとめて処理回路で実現することもできる。画像監視システム１０の各機能について、一部を専用のハードウェア１０ａで実現し、他部をソフトウェアまたはファームウェアで実現してもよい。このように、処理回路は、ハードウェア１０ａ、ソフトウェア、ファームウェア、またはこれらの組み合わせで画像監視システム１０の各機能を実現する。 Each function of the image monitoring system 10 can be realized by a processing circuit. Alternatively, each function of the image monitoring system 10 can be collectively realized by a processing circuit. Some of the functions of the image monitoring system 10 may be realized by dedicated hardware 10a, and the other part may be realized by software or firmware. As described above, the processing circuit realizes each function of the image monitoring system 10 with the hardware 10a, software, firmware, or a combination thereof.
　実施の形態２．
　実施の形態２では、実施の形態１で開示された例と相違する点について詳しく説明する。実施の形態２で説明しない特徴については、実施の形態１で開示された例のいずれの特徴が採用されてもよい。 Embodiment 2. FIG.
In the second embodiment, differences from the example disclosed in the first embodiment will be described in detail. For features not described in the second embodiment, any of the features disclosed in the first embodiment may be adopted.
　反射部１５は、同心円状の複数の領域に分割される。反射部１５の分割された複数の領域の各々は、厚さ方向に互いにずれる凹レンズ状に構成される。すなわち、反射部１５は、フレネルレンズ構造を有する。反射部１５のフレネルレンズ構造を有する部分は、透明部材で構成される。反射部１５は、フレネルレンズ構造の部分の一面に反射面を有する。反射面は、例えばアルミニウムなどの金属の蒸着により形成される。反射面の反対側の面は、下方のエスカレーター１に向けられる。 The reflection part 15 is divided into a plurality of concentric areas. Each of the plurality of divided regions of the reflecting portion 15 is configured in a concave lens shape that is shifted from each other in the thickness direction. That is, the reflecting portion 15 has a Fresnel lens structure. The portion having the Fresnel lens structure of the reflecting portion 15 is made of a transparent member. The reflecting portion 15 has a reflecting surface on one surface of the Fresnel lens structure. The reflective surface is formed by vapor deposition of a metal such as aluminum. The surface opposite the reflecting surface is directed to the lower escalator 1.
　反射鏡１１は、反射部１５にフレネルレンズ構造を有する。このため、反射鏡１１が薄くなる。反射鏡１１が軽くなる。これにより、画像監視システム１０の施工性が向上する。反射鏡１１は、天井３により簡易な構造で固定できる。 The reflecting mirror 11 has a Fresnel lens structure in the reflecting portion 15. For this reason, the reflecting mirror 11 becomes thin. The reflecting mirror 11 becomes lighter. Thereby, the workability of the image monitoring system 10 is improved. The reflecting mirror 11 can be fixed to the ceiling 3 with a simple structure.
　本発明に係る画像監視システムは、エスカレーターに適用できる。 The image monitoring system according to the present invention can be applied to an escalator.
　１　エスカレーター、　２ａ　上部乗降口、　２ｂ　下部乗降口、　３　天井、　４　主枠、　５　踏段、　６　ハンドレール、　７　駆動装置、　８　ハンドレール駆動装置、　９ａ　上部機械室、　９ｂ　下部機械室、　１０　画像監視システム、　１０ａ　ハードウェア、　１０ｂ　プロセッサ、　１０ｃ　メモリ、　１１　反射鏡、　１２　カメラ、　１３　調整装置、　１４　支柱、　１５　反射部、　１６　監視端末装置、　１６１　ディスプレイ、　１７　制御装置、　１７１　抽出部、　１７２　記憶部、　１７３　検知部、　１７４　送信部、　１７５　制御部、　１８　監視員、　１９　メッセージボックス 1 escalator, 2a upper entrance / exit, 2b lower entrance / exit, 3 ceiling, 4 main frame, 5 steps, 6 handrail, 7 drive unit, 8 handrail drive unit, 9a upper machine room, 9b lower machine room, 10 image monitoring System, 10a hardware, 10b processor, 10c memory, 11 reflector, 12 camera, 13 adjustment device, 14 strut, 15 reflector, 16 monitoring terminal device, 161 display, 17 control device, 171 extraction unit, 172 storage unit, 173 detection unit, 174 transmission unit, 175 control unit, 18 monitor, 19 message box

Claims (5)

  1. 　上階および下階の間に掛け渡されるエスカレーターの踏段より上方の支持物を向き、前記上階または前記下階に設けられるカメラと、
    　入射する光を発散させるように反射する反射部を有し、前記反射部が前記カメラに撮影される画像に映るように前記反射部を下方に向けて前記支持物に支持される反射鏡と、
    　を備えるエスカレーターの画像監視システム。     A camera provided on the upper floor or the lower floor, facing the support above the steps of the escalator spanned between the upper floor and the lower floor,
    A reflecting part that reflects so as to diverge incident light, and is supported by the support with the reflecting part facing downward so that the reflecting part is reflected in an image photographed by the camera;
    An image monitoring system for escalators.
  2. 　前記反射部は、フレネルレンズ構造を有する請求項１に記載のエスカレーターの画像監視システム。 The escalator image monitoring system according to claim 1, wherein the reflecting portion has a Fresnel lens structure.
  3. 　前記画像から前記エスカレーターの左右の両側に設けられる一対のハンドレールの間の画像を抽出する抽出部
    を備える請求項１または請求項２に記載のエスカレーターの画像監視システム。     3. The escalator image monitoring system according to claim 1, further comprising an extraction unit that extracts an image between a pair of handrails provided on the left and right sides of the escalator from the image.
  4. 　受信するデータが表す内容を前記エスカレーターの監視をする監視員に報知する監視端末装置と、
    　前記カメラに撮影される画像において前記反射部に映る前記エスカレーターの範囲の変化を検知する検知部と、
    　前記検知部が前記変化を検知する場合に、前記カメラおよび前記反射鏡の位置関係が調整を要することを表すデータを前記監視端末装置に送信する送信部と、
    を備える請求項１から請求項３のいずれか一項に記載のエスカレーターの画像監視システム。     A monitoring terminal device that informs a monitor who monitors the escalator of the content represented by the received data;
    A detection unit for detecting a change in a range of the escalator reflected in the reflection unit in an image photographed by the camera;
    When the detection unit detects the change, a transmission unit that transmits data indicating that the positional relationship between the camera and the reflecting mirror requires adjustment to the monitoring terminal device;
    The escalator image monitoring system according to claim 1, further comprising:
  5. 　前記カメラに撮影される画像において前記反射部に映る前記エスカレーターの範囲の変化を検知する検知部と、
    　前記検知部が前記変化を検知する場合に、前記変化が検知されなくなるように前記カメラの向きを変える調整装置
    を備える請求項１から請求項３のいずれか一項に記載のエスカレーターの画像監視システム。     A detection unit for detecting a change in a range of the escalator reflected in the reflection unit in an image photographed by the camera;
    The escalator image monitoring system according to any one of claims 1 to 3, further comprising an adjustment device that changes a direction of the camera so that the change is not detected when the detection unit detects the change. .
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