Crane monitoring system and display device

Abstract

To provide a crane monitoring system and a display device that are capable of monitoring a crane while reducing the load on the crane's operating system.SOLUTION: A crane monitoring system 100 comprises a synchronization unit 27 that synchronizes the time series data of the operation status information with the time series data of the image information. By the synchronization unit 27 synchronizing the time series data of the operation status information and the image information, for example, in the event of a failure, the image information at the same time can be confirmed together with the operation status information. This allows a crane 1 to be monitored well. Here, the image information is input to a CMS 20 via an information transmission path 28 configured as a system separate from an operation system 25. In this case, it is possible to prevent the image information from entering the operation system 25 that transmits the operation information. Therefore, the load on the operation system 25 can be reduced.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a crane monitoring system and a display device. [Background technology]

[0002] A known example of a crane monitoring system is described in Patent Document 1. This system acquires image information using a camera installed on the crane. The system synchronizes signal information, such as crane operation, with image information, making it possible to refer to the information when a malfunction occurs. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 8-12259 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned crane monitoring system, image information acquired by the camera is transmitted from the PLC in the cab via the PLC in the electrical room to a storage device, etc. In this case, in addition to signals related to the crane's operation system, large-capacity image information is also transmitted, which causes a problem of a large communication load on the operation system.

[0005] The present disclosure has been made to solve such problems, and aims to provide a crane monitoring system and a display device that are capable of monitoring a crane while reducing the communication load on the crane's operation system. [Means for solving the problem]

[0006] The crane monitoring system according to the present disclosure is a crane monitoring system that monitors a crane and includes an operation status information acquisition unit that acquires operation status information related to the operation status of the crane, an image acquisition unit that acquires image information of the crane, a synchronization unit that synchronizes time series data of the operation status information and time series data of the image information, and an operation system that transmits operation information related to the operation of the crane, and the image information is input to the operation status information acquisition unit via an information transmission path configured as a system separate from the operation system.

[0007] The crane monitoring system according to the present disclosure includes a synchronization unit that synchronizes the time series data of the operation status information and the time series data of the image information. By the synchronization unit synchronizing the time series data of the operation status information and the image information, for example, in the event of a failure, the image information at the same time as the operation status information can be confirmed. This allows the crane to be monitored well. Here, the image information is input to the operation status information acquisition unit via an information transmission path configured as a system separate from the operation system. In this case, it is possible to prevent the image information from entering the operation system that transmits the operation information. Therefore, the load on the operation system can be reduced. As described above, the crane can be monitored while reducing the load on the operation system of the crane.

[0008] The crane monitoring system may further include an image information storage unit that stores the image information acquired by the image acquisition unit, and the synchronization unit may acquire time information held by the image information storage unit and update the time information in the operation status information acquisition unit with the time information. In this case, time synchronization between devices can be automatically updated in a manner that is completed within the crane.

[0009] The crane monitoring system may further include an image information storage unit that stores the image information acquired by the image acquisition unit, and the synchronization unit may acquire time information held by the operation status information acquisition unit and update the time information in the image information storage unit with the time information. In this case, time synchronization between devices can be automatically updated in a manner that is completed within the crane.

[0010] The crane monitoring system further includes an image information storage unit that stores the image information acquired by the image acquisition unit, and the synchronization unit may acquire time information from outside the crane and update the time information of the operation status information acquisition unit and the image information storage unit with the time information. In this case, synchronization with standard time (such as JST) is possible.

[0011] The synchronization unit may perform synchronization before the start of the loading / unloading operation of the crane. In this case, synchronization can be performed while the crane is performing the loading / unloading operation. Therefore, the synchronization unit can perform synchronization without being affected by the loading / unloading operation.

[0012] When the operation status information acquisition unit detects a malfunction of the crane, the operation status information acquisition unit may automatically save image information at the time of the malfunction detection and for a predetermined period before and after the malfunction. In this case, the operation status information acquisition unit can acquire image information at the time of the malfunction that requires monitoring.

[0013] It may be possible to check image information in any state of the crane. In this case, the image information at the same time as checking the state of the crane can be checked.

[0014] The crane monitoring system may further include an information terminal disposed at a position separated from the crane, and the information terminal may be capable of checking image information in any state of the crane. In this case, the crane can be monitored at a position separated from the crane using the image information together with the state of the crane.

[0015] The image acquisition unit may be operable remotely. In this case, the operator can operate the image acquisition unit remotely without going to the location of the image acquisition unit.

[0016] The crane monitoring system may further include a display device that simultaneously displays image information at any given time and operating status information at the same time, allowing a user to easily check the operating status and image information at any required time.

[0017] The display device of the present disclosure is a display device that displays image information of a crane, where the time series data of the image information is synchronized with time series data of operating status information regarding the operating status of the crane, and displays the operating status information at any given timing together with the image information at that timing.

[0018] In the display device according to the present disclosure, the time series data of the image information is synchronized with the time series data of the operation status information regarding the operation status of the crane, and for example, in the event of a breakdown, the image information at the same time can be confirmed together with the operation status information. This allows the crane to be monitored well. The user can easily check the operation status and image information at the required timing. Effect of the Invention

[0019] According to the present invention, it is possible to monitor a crane while reducing the communication load on the crane's operation system. [Brief description of the drawings]

[0020] [Figure 1] 1 is a schematic diagram showing a crane monitoring system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic configuration diagram of a crane to which FIG. 1 is applied. [Diagram 3] 11 is a flowchart illustrating an example of a procedure for synchronization by a synchronization unit. [Figure 4] 13 is an example of a screen displayed on a display device. [Diagram 5] 13 is an example of a screen displayed on a display device. [Figure 6] FIG. 13 is a schematic diagram showing a crane monitoring system according to a modified example. [Figure 7] 11 is a flowchart illustrating an example of a procedure for synchronization by a synchronization unit. [Figure 8] FIG. 13 is a schematic diagram showing a crane monitoring system according to a modified example. [Figure 9]11 is a flowchart illustrating an example of a procedure for synchronization by a synchronization unit. [Figure 10] FIG. 13 is a schematic diagram showing a crane monitoring system according to a modified example. [Figure 11] FIG. 13 is a schematic diagram showing a crane monitoring system according to a modified example. [Figure 12] 11 is a flowchart illustrating an example of a procedure for synchronization by a synchronization unit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, preferred embodiments of the crane monitoring system according to the present disclosure will be described with reference to the drawings. Fig. 1 is a schematic diagram showing the crane monitoring system according to this embodiment. Fig. 2 is a schematic diagram of a crane to which Fig. 1 is applied.

[0022] The crane monitoring system 100 according to this embodiment is a system that monitors a crane 1. The crane monitoring system 100 includes a crane 1 and a ground station 2. The crane 1 also includes an electric room 3, a driver's cab 4, and a plurality of cameras 5 (image acquisition units).

[0023] As shown in Fig. 2, the crane 1 exemplified in this embodiment is a bridge crane that performs loading and unloading work on a quay. The type of crane 1 to which the crane monitoring system 100 is applied is not particularly limited, and an overhead crane, a jib crane, a mallet crane, an unloader, a stacker crane, or the like may be adopted. As shown in Fig. 2, the crane 1 transports a container C placed in a container ship 90 (ship) moored alongside a quay 91. The crane 1 includes an electric room 3, a driver's cab 4, a plurality of cameras 5 (image acquisition units), a leg structure 11, a girder 12, a trolley 7, and a spreader 10.

[0024] The leg structure 11 (running section) is installed on the ground of the quay 91 and supports the entire crane 1 while extending upward. The leg structure 11 is made up of a pair of sea-side leg and land-side leg, which are connected to each other so as to form an H-shape when viewed in the fore-aft direction (when viewed in the traveling direction). The sea-side leg and the land-side leg each have a running device 11a at their base end. Driven by a traveling motor, the running device 11a runs in a predetermined direction along rails installed on the ground along the quay 91. This enables the leg structure 11 to run on the quay 91 in the traveling direction.

[0025] The girder 12 extends horizontally from the leg structure 11 in a direction intersecting the traveling direction (left-right direction on the paper in FIG. 1 ). The girder 12 extends above the container ship 90 on the container ship 90 side beyond the quay 91 while being supported by the leg structure 11. In other words, the girder 12 extends out to sea from the quay 91. An electrical room 3 housing various devices for controlling the crane 1 is provided on the land side above the girder 12.

[0026] The trolley 7 is capable of moving laterally along the girder 12. The trolley 7 is moved laterally by driving a traverse motor. As the trolley 7 moves, the operator's cab 4 and the spreader 10 are capable of moving in the extension direction of the girder 12. The trolley 7 is equipped with a drum (not shown) that rotates forward and backward by a drum drive motor, and suspends the spreader 10 via a wire rope 9 that is wound around the drum.

[0027] An operator who operates the crane 1 sits in the operator's cab 4. Details of the operator's cab 4 will be described later. The spreader 10 is suspended from the trolley 7 via a wire rope 9, and can be wound up or down by the wire rope 9. The spreader 10 can hold the container C to be hoisted, and loads and unloads the container C.

[0028] The camera 5 is a device that acquires image information for monitoring the state of each part of the crane 1. In this embodiment, cameras 5A, 5B, 5C, 5D, 5E, and 5F are provided at each part of the crane 1. However, the number and installation positions of the cameras 5 are not particularly limited. The cameras 5A and 5B are provided at the sea-side tip of the girder 12. The cameras 5A and 5B can monitor the ship at different angles. The camera 5C is provided in the driver's cab 4 that moves with the trolley 7. The camera 5C can monitor the area below the trolley. The cameras 5D and 5E are provided near the driver's cab entrance on the upper side of the leg structure 11. The cameras 5D and 5E can monitor the area between the sea-side leg and the land-side leg of the leg structure 11. The camera 5F is provided near the land-side running gear 11a. The camera 5F can monitor the truck and / or the container on the truck.

[0029] The camera 5 can be operated remotely (zooming, adjusting the angle, etc.). That is, the operator may operate the camera 5 by transmitting a command signal from a remote location without going to the installation position of the camera 5. For example, the user may operate the camera 5 from the cab 4. Alternatively, the user may operate the camera 5 by operating the information terminals 40A and 40B of the remote stations described below.

[0030] Returning to FIG. 1, the electrical room 3 includes a CMS 20 (operation status information acquisition unit), a recorder 21 (image information storage unit), and a PLC 22 (programmable logic controller).

[0031] The CMS (Crane Monitoring System) 20 acquires operation status information related to the operation status of the crane 1. The operation status of the crane 1 means the general status related to the operation of the crane 1, such as the status during loading and unloading, the status during movement, the stopped status, and the fault status. The operation status information includes information indicating the operation status of the crane 1, information for grasping the operation status, and information affecting the operation status. For example, the operation status information includes the travel position, the traverse position, the hoisting position, the spreader position, and the load acting on each part during loading and unloading. The operation status information also includes speed commands for each drive unit such as travel, traverse, hoisting, and hoisting, motor voltage, and motor current. The operation status information may also include information such as wind speed and wind direction. The CMS 20 is connected to devices and sensors provided in the crane 1, and acquires information detected by these devices and sensors as operation status information. The CMS 20 also accumulates the operation status information as time-series data. Therefore, the CMS 20 accumulates information on the operation status information at a certain time. Therefore, for example, when a failure of the crane 1 is detected, the CMS 20 can accumulate the operating state information before and after the failure as time-series data of the failure information.

[0032] Recorder 21 accumulates image information acquired by camera 5. Recorder 21 accumulates image information acquired from each camera 5 as time-series data. Therefore, recorder 21 accumulates what kind of image information each camera 5 acquired at a certain time. Recorder 21 accumulates image information from all cameras 5A, 5B, 5C, 5D, 5E, and 5F as time-series data.

[0033] The PLC 22 is a device configured as a main control device that controls the start, stop, speed pattern, etc. of drive units in various devices for operating the crane 1. The PLC 22 is connected to various devices related to operation within the crane 1 and transmits control signals. The PLC 22 is electrically connected to a PLC 31 (described below) in the cab 4 via line L1. The PLC 22 obtains information related to operations for operating the crane 1 from the PLC 31 in the cab 4. In this way, the PLCs 22, 31, and line L1 are configured as an operation system 25 that transmits operation information related to the operation of the crane 1.

[0034] The cab 4 includes a PLC 31 and a display device 32. The PLC 31 may be replaced with an I / O terminal, another computer, or the like. Alternatively, the PLC 31 may be installed in a location other than the cab. The PLC 31 is a device configured as a control device that acquires signals from operating devices such as an operating lever in the cab 4 and converts them into a predetermined format. The display device 32 is a device that displays information related to the crane 1. The display device 32 is configured with a monitor or the like. Details of the display content of the display device 32 will be described later.

[0035] The camera 5 is connected to the hub 24 by a line L2. The CMS 20 is connected to the hub 24 by a line L3. The hub 24 is connected to a hub 33 in the cab 4 by a line L5. The display device 32 is connected to the hub 33 by a line L6. This electrically connects the camera 5, the CMS 20, the recorder 21, and the display device 32 via the hubs 24 and 33. The CMS 20 is connected to the hub 26 by a line L7. The CMS 20 is connected to the PLC 22 by a line L8.

[0036] The crane 1 according to this embodiment has a synchronization unit 27 in the electric room 3. The synchronization unit 27 synchronizes the time series data of the operation status information of the CMS 20 with the time series data of the image information of the recorder 21. As a result, the time information linked to the operation status information in the CMS 20 and the time information linked to the image information in the recorder 21 are synchronized with each other. In this case, it is possible to accurately grasp the operation status at a certain time and the image information when in that operation status.

[0037] In this embodiment, the recorder 21 functions as an NTP server that has standard time information. The synchronization unit 27 is provided in the CMS 20. The synchronization unit 27 acquires time information held by the recorder 21 and updates the time information in the CMS 20 with the time information. Here, an example of a procedure of synchronization by the synchronization unit 27 will be described with reference to FIG. 3. First, the synchronization unit 27 starts time synchronization between the CMS 20 and the recorder 21 (step S10). Next, the synchronization unit 27 accesses the recorder 21 via the line L3, the hub 24, and the line L4 (step S20). The synchronization unit 27 acquires the time information held by the recorder 21 (step S30). As a result, the synchronization unit 27 updates the time information in the CMS 20 with the time information acquired by the recorder 21 (step S40). The CMS 20 displays the time data on the display device 32 (step S50).

[0038] The synchronization unit 27 may perform synchronization before the start of the loading and unloading work of the crane 1. This allows the operation state at any timing during the loading and unloading work and the image information when in that operation state to be synchronized and stored. Here, "before the start of the loading and unloading work" may be any timing as long as the timing at which the crane 1 starts the loading and unloading work to acquire the operation state information can be avoided. For example, the synchronization unit 27 may perform synchronization at the start of the day's work or at the start of the afternoon work. In addition, a downtime of the loading and unloading work may be set periodically (such as once an hour) during the day, and synchronization may be performed during the downtime. Note that if the time between synchronization and the start of the loading and unloading work is long, this also corresponds to "before the start of the loading and unloading work." For example, even if synchronization is performed at the end of the day's work, no operation is performed until the start of the loading and unloading work the next day, so this corresponds to synchronization before the start of the loading and unloading work the next day. However, the power of the crane 1 is on between the end of the previous day's work and the start of the next day's work, and during that time, the synchronization between the time information in the CMS 20 and the time information held by the NTP server continues. The synchronization unit 27 may automatically perform synchronization at a predetermined timing. For example, synchronization may be performed automatically when the power supply of the crane 1 is turned on at the start of work for the day. Alternatively, the synchronization unit 27 may start synchronization in response to an operation by an operator.

[0039] The CMS 20 acquires image information in a synchronized state. The CMS 20 acquires image information at any timing from the recorder 21 in a synchronized state. The CMS 20 also links the acquired video information with the accumulated operation state information via the synchronized time. For example, when the CMS 20 detects a failure of the crane 1, the CMS 20 may acquire image information at the time of failure detection and any time before and after the failure from the recorder and automatically store it. The CMS 20 may acquire image information at any time from the recorder 21, not limited to the timing of the failure, according to user settings, etc. The timing at which the CMS 20 acquires image information from the recorder 21 is not particularly limited, and the CMS 20 may acquire image information in the recorder 21 at the timing of synchronization. The CMS 20 may also acquire image information acquired by the recorder 21 sequentially after the synchronization is completed.

[0040] Here, the image information is input to the CMS 20 via an information transmission path 28 configured as a system separate from the operation system 25. In this embodiment, the information transmission path 28 has lines L2, L3, L4, and a hub 24. The image information acquired by the camera 5 is input to the recorder 21 via the line L2, the hub 24, and the line L4. Then, the image information of the recorder 21 is input to the CMS 20 via the line L4, the hub 24, and the line L3. In this way, the image information is input to the CMS 20 without passing through the PLCs 22 and 31 and the line L1 of the operation system 25. Also, when the image information accumulated in the CMS 20 is displayed on the display device 32, it is input to the display device 32 via the line L3, the hub 24, the line L5, the hub 33, and the line L6. When the image information accumulated in the CMS 20 is transmitted to a remote station or a ground station described later, it is transmitted via the line L7 and the hub 26. In these cases, the image information is also transmitted to a desired location without passing through the operation system 25.

[0041] Next, an example of image information displayed on the display device 32 will be described. The display device 32 may display image information at the time of a failure log. The image information at this time may be displayed as either a video or a still image, or both. At this time, a list of failure logs may be displayed on the display device 32, and image information at the time corresponding to the failure log may be displayed according to a user's selection. Furthermore, the display device 32 may play back recorded data of any time.

[0042] The display device 32 may simultaneously display image information at any timing and operating status information of the crane 1 at that timing. For example, the display device 32 may simultaneously display, on one screen, a column for image information showing the state of the crane 1 and a column for displaying operation data, operation status, status display, etc. of the crane 1. The display device 32 may also compositely display the operation data, operation status, status display, etc. of the crane 1 within the image information.

[0043] FIG. 4 is a diagram showing an example of a screen displayed on the display device 32. The screen shown in FIG. 4 has an area 80 showing the time, an area 81 showing image information, an area 82 showing operation status information, and an area 83 for manipulating the image information. In area 81, image information at the time shown in area 80 is displayed. In the example shown in FIG. 4, image information of a camera 5C provided on the trolley 7 is displayed. The camera of the image information displayed in area 81 can be changed. In area 82, operation status information at the time shown in area 80 is displayed. By manipulating area 83, it is possible to simultaneously display image information at a desired timing and operation status information of the crane 1 at that timing.

[0044] Fig. 5 is a diagram showing an example of a screen displayed on display device 32. The screen shown in Fig. 5 has an area 84 showing a failure log, an area 85 showing image information, an area 86 showing operation status information, and an area 87 for manipulating the image information. By manipulating area 87, a video showing the operation of crane 1 before and after the failure can be displayed in area 85. Furthermore, operation status information matching the video is displayed in area 86.

[0045] Returning to FIG. 1, the crane 1 has information terminals 40A and 40B as remote stations. The information terminals 40A and 40B are terminals that can exchange information with the CMS 20 at locations other than the cab 4. For example, a tablet, a smartphone, a PC, or a dedicated operation terminal may be adopted as the information terminals 40A and 40B. The information terminal 40A can communicate with the CMS 20 by wire. The information terminal 40A is connected to the hub 26 via a wired line L11. This allows the information terminal 40A to communicate with the CMS 20 via the line L11, the hub 26, and the line L7. The information terminal 40B can communicate with the CMS 20 wirelessly. A wireless LAN access point 41 is connected to the hub 26 via the line L12. The information terminal 40B can communicate with the CMS 20 via the access point 41, the line L12, the hub 26, and the line L7. As a result, the information terminals 40A, 40B can display the same screen as the display device 32. Therefore, the information terminals 40A, 40B can check image information in any state of the crane 1. The information terminals 40A, 40B can also operate the camera 5. The location where communication is performed by the information terminals 40A, 40B is not limited to inside the crane 1, and may be a remote location away from the crane 1.

[0046] The crane monitoring system 100 has a ground station information terminal 50 outside the crane 1. The ground station information terminal 50 includes a wireless LAN antenna 51, a hub 52, and a display device 53. The antenna 51 and the hub 52 are connected by a line L16. The hub 52 and the display device 53 are connected by a line L17. The crane 1 is provided with a wireless LAN antenna 42 capable of wirelessly communicating with the antenna 51. The antenna 42 is connected to the hub 26 via the line L13. This allows the display device 53 of the ground station information terminal 50 to communicate with the CMS 20 via the line L17, the hub 52, the line L16, the antennas 51 and 42, the line L13, the hub 26, and the line L7. As a result, the display device 53 can display a screen similar to that of the display device 32. Therefore, the information terminals 40A and 40B can check image information in any state of the crane 1. The information terminals 40A and 40B can also operate the camera 5.

[0047] Next, the actions and effects of the crane monitoring system 100 and the display device 32 according to this embodiment will be described.

[0048] The crane monitoring system 100 according to this embodiment includes a synchronization unit 27 that synchronizes the time series data of the operation status information and the time series data of the image information. By the synchronization unit 27 synchronizing the time series data of the operation status information and the image information, for example, in the event of a breakdown, the image information at the same time as the operation status information can be confirmed. This allows the crane 1 to be monitored well. Here, the image information is input to the CMS 20 via an information transmission path 28 configured as a system separate from the operation system 25. In this case, it is possible to suppress the image information from entering the operation system 25 that transmits the operation information. Therefore, it is possible to reduce the load on the operation system 25 (suppression of congestion, malfunction, and control delay). As a result, it is possible to monitor the crane 1 while reducing the load on the operation system 25 of the crane 1. That is, it is possible to accurately compare the operation status information by the CMS 20 with the video record. In addition, it is possible to confirm the operation situation at the time of an accident from both the CMS 20 and the camera system.

[0049] The crane monitoring system 100 further includes a recorder 21 that accumulates image information acquired by the camera 5, and the synchronization unit 27 may acquire time information held by the recorder 21 and update the time information in the CMS 20 with the time information. In this case, the internal clock of the CMS 20 can be automatically updated in a manner that is completed within the crane.

[0050] The synchronization unit 27 may perform synchronization before the start of loading and unloading work by the crane 1. In this case, loading and unloading work by the crane 1 can be performed with the operation state information and the video record synchronized. Therefore, the synchronization unit 27 can perform synchronization without being affected by the loading and unloading work.

[0051] When the CMS 20 detects a malfunction of the crane 1, the CMS 20 may automatically store image information at the time of malfunction detection and for a predetermined period before and after the malfunction. In this case, the CMS 20 can obtain image information at the time of the malfunction that requires monitoring.

[0052] It may be possible to check image information in any state of the crane 1. In this case, it is possible to check the state of the crane 1 and also check image information at the same time.

[0053] The crane monitoring system 100 further comprises information terminals 40A, 40B, 50 arranged at positions separated from the crane 1, and the information terminals 40A, 40B, 50 may be capable of checking image information in any state of the crane 1. In this case, the crane 1 can be monitored at positions separated from the crane 1 using the image information together with the state of the crane 1.

[0054] The camera 5 may be capable of being operated remotely. In this case, the operator can operate the camera 5 remotely without going to the location of the camera 5.

[0055] The crane monitoring system 100 may further include a display device 32 that simultaneously displays image information at any timing and operation status information at the timing. In this case, the user can easily check the operation status and image information at the required timing.

[0056] The display device 32 in this embodiment is a display device 32 that displays image information of the crane 1, and the time series data of the image information is synchronized with time series data of operating status information regarding the operating status of the crane 1, and displays the operating status information at any given timing together with the image information at that timing.

[0057] In the display device 32 according to this embodiment, the time series data of the image information is synchronized with the time series data of the operation status information relating to the operation status of the crane 1, and for example, in the event of a breakdown, it is possible to check the image information at the same time as the operation status information. This allows for good monitoring of the crane 1. The user can easily check the operation status and image information at the required timing.

[0058] The present invention is not limited to the above-described embodiments.

[0059] For example, the structure shown in FIG. 6 may be adopted. The crane monitoring system 100 shown in FIG. 6 is mainly different from the configuration shown in FIG. 1 in that the synchronization unit 27 is provided in the recorder 21. In this embodiment, the CMS 20 functions as an NTP server that is a server having standard time information. The synchronization unit 27 is provided in the recorder 21. The synchronization unit 27 acquires time information held by the CMS 20 and updates the time information in the recorder 21 with the time information. Here, an example of a procedure of synchronization by the synchronization unit 27 will be described with reference to FIG. 7. First, the synchronization unit 27 starts time synchronization between the CMS 20 and the recorder 21 (step S110). Next, the synchronization unit 27 accesses the CMS 20 via the line L4, the hub 24, and the line L3 (step S120). The synchronization unit 27 acquires time information held by the CMS 20 (step S130). As a result, the synchronization unit 27 updates the time information in the recorder 21 with the time information acquired by the CMS 20 (step S140). The CMS 20 displays the time data on the display device 32 (step S150).

[0060] As described above, the crane monitoring system 100 further includes the recorder 21 that accumulates image information acquired by the camera 5, and the synchronization unit 27 may acquire time information held by the CMS 20 and update the time information of the recorder 21 with the time information. In this case, the internal clock of the recorder 21 can be automatically updated in a manner that is completed within the crane.

[0061] For example, the structure shown in FIG. 8 may be adopted. The crane monitoring system 100 shown in FIG. 8 differs from the structure shown in FIG. 1 mainly in that time information is acquired from an external source. In this embodiment, the FM receiver 61 acquires the time of an external time server. The synchronization unit 27 is provided in the CMS 20 and the recorder 21. The synchronization unit 27 acquires time information held by a time server external to the crane 1, and updates the time information in the CMS 20 and the recorder 21 with the time information. Here, an example of a procedure for synchronization by the CMS 20 and the recorder 21 will be described with reference to FIG. 9. First, the FM receiver 61 acquires the time of the external time server (step S200). The synchronization unit 27 starts time synchronization between the CMS 20 and the recorder 21 (step S210). Next, the synchronization unit 27 accesses the FM receiver 61 (step S220). The synchronization unit 27 acquires the time information held by the FM receiver 61 (step S230). As a result, the synchronization unit 27 updates the time information in the CMS 20 and the recorder 21 with the time information acquired by the CMS 20 and the recorder 60 (step S240). The CMS 20 displays the time data on the display device 32 (step S250).

[0062] As described above, the crane monitoring system 100 further includes the recorder 21 that accumulates image information acquired by the camera 5, and the synchronization unit 27 may acquire time information from outside the crane 1 and update the time information of the CMS 20 and the recorder 21 with the time information. In this case, synchronization with standard time (JST, etc.) is possible, and not only can the crane be monitored, but image information can also be associated with land-side equipment and ship-side image information synchronized with standard time.

[0063] For example, the structure shown in Fig. 10 may be adopted. The crane monitoring system 100 shown in Fig. 10 differs from the structure shown in Fig. 8 mainly in that it has an Internet connector 62. In this embodiment, the Internet connector 62 acquires the time of an external time server. The synchronization unit 27 is provided in the CMS 20 and the recorder 21. The synchronization unit 27 acquires time information held by a time server external to the crane 1, and updates the time information in the CMS 20 and the recorder 21 with the time information. Note that, except that the FM receiver 61 is replaced with the Internet connector 62, the same processing as that in the flowchart shown in Fig. 9 is performed. The information terminal 40 of the remote station can also access the CMS 20 via the Internet connector 63 and the cloud service 64.

[0064] For example, the structure shown in FIG. 11 may be adopted. The crane monitoring system 100 shown in FIG. 11 differs from the structure shown in FIG. 1 mainly in that it does not have the recorder 21. In this embodiment, the CMS 20 directly acquires image information from the camera 5. The synchronization unit 27 is provided in the CMS 20. The synchronization unit 27 synchronizes the operation status information and the time series data of the image information by synchronizing with the PLC program of the PLC 22. Here, an example of a procedure of synchronization by the CMS 20 will be described with reference to FIG. 12. First, the synchronization unit 27 synchronizes the CMS 20 with the PLC program of the PLC 22 (step S310). The CMS 20 directly imports the image information from the camera 5 (step S320). This allows the CMS 20 to synchronize the acquired operation status information and the time series data of the image information. The CMS 20 displays the operation status information, time data, and image information on the display device 32 (step S330). At this time, the time is based on the time stamps held by the CMS 20 and the PLC 22. [Explanation of symbols]

[0065] 1...crane, 5...camera (image acquisition section), 20...CMS (operation status information acquisition section), 21...recorder (image information storage section), 25...operation system, 27...synchronization section, 28...information transmission path, 32...display device, 100...crane monitoring system.

Claims

1. A crane monitoring system for monitoring a crane, comprising: An operation status information acquisition unit that acquires operation status information regarding an operation status of the crane; An image acquisition unit that acquires image information of the crane; a synchronization unit that synchronizes the time series data of the motion status information and the time series data of the image information; An operation system that transmits operation information related to the operation of the crane, A crane monitoring system, in which the image information is input to the operation status information acquisition unit via an information transmission path configured as a system separate from the operation system.

2. An image information storage unit that stores the image information acquired by the image acquisition unit, 2. The crane monitoring system according to claim 1, wherein the synchronization unit acquires time information held by the image information storage unit and updates the time information in the operation status information acquisition unit with the time information.

3. An image information storage unit that stores the image information acquired by the image acquisition unit, 2. The crane monitoring system according to claim 1, wherein the synchronization unit acquires time information held by the operation status information acquisition unit, and updates the time information of the image information storage unit with the time information.

4. An image information storage unit that stores the image information acquired by the image acquisition unit, 2. The crane monitoring system according to claim 1, wherein the synchronization unit acquires time information from outside the crane and updates the time information of the operation status information acquisition unit and the image information storage unit with the time information.

5. The crane monitoring system according to claim 1 , wherein the synchronization unit performs synchronization before a loading / unloading operation of the crane is started.

6. 2. The crane monitoring system according to claim 1, wherein, when the operation status information acquisition unit detects a malfunction of the crane, the operation status information acquisition unit automatically stores the image information at the time of malfunction detection and for a predetermined period before and after the malfunction.

7. The crane monitoring system according to claim 1 , wherein the image information can be confirmed in any state of the crane.

8. Further comprising an information terminal arranged at a position separated from the crane, The crane monitoring system according to claim 1 , wherein the information terminal is capable of confirming the image information in any state of the crane.

9. The crane monitoring system according to claim 1 , wherein the image acquisition unit is capable of being remotely operated.

10. 2. The crane monitoring system according to claim 1, further comprising a display device that simultaneously displays the image information at any given timing and the operating status information at that timing.

11. A display device for displaying image information of a crane, The time series data of the image information is synchronized with the time series data of operation status information regarding the operation status of the crane, A display device that simultaneously displays the image information at any given timing and the operating state information at the same timing.

Images