Underground cable laying monitoring system and underground cable laying monitoring method

Abstract

To provide an underground cable laying monitoring system and an underground cable laying monitoring method by which when an underground cable is laid, the passage state of the cable passing through a manhole can be effectively monitored.SOLUTION: An underground cable laying monitoring system 100 monitors the laid state of an underground cable 2 to be laid through a plurality of manholes 1. The system includes a photographing device 10 disposed in each of the manholes 1, and a management device 30 that stores a monitoring video of the plurality of manholes 1 photographed by the photographing device 10 while being communicably connected to the photographing device 10. It is preferable that the photographing device 10 and the management device 30 are communicably connected via communication devices 20 corresponding to the manholes 1. It is preferable to include a monitoring terminal 40, 60 that displays the monitoring video while being communicably connected to the management device 30.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a system and a method for monitoring an underground cable installation. [Background technology]

[0002] Underground cables such as electric wires and communication lines are laid underground by passing the cables through cable pipes that have been buried underground in advance. Since the total length of the underground cable is, for example, several hundred meters, the cable pipes are buried through multiple manholes, and the manholes have openings for the cable pipes.

[0003] When laying an underground cable, the cable passes from one opening in a manhole to the other. At this time, the cable's passage through the manhole must be monitored to ensure that it does not come into contact with any equipment placed inside the manhole. Conventionally, this was done by workers entering each manhole and checking visually.

[0004] Meanwhile, with regard to monitoring of underground cables, for example, Patent Document 1 describes an invention relating to a portable monitoring device that monitors for abnormalities (fires) in manholes in which cables are laid and automatically transmits the results wirelessly.

[0005] Furthermore, Patent Document 2 describes an invention relating to a cable laying method in which, when laying a cable, a camera is attached to the tip of an additional cable so that a rod can be pushed in while viewing an image in front of the cable. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2001-006077 A [Patent Document 2] JP 2002-315129 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, in order for an operator to visually monitor the condition of the cable passing through a manhole, the operator must be stationed in each of the multiple manholes through which the cable passes, which is a heavy burden.

[0008] In contrast, the invention described in Patent Document 1 monitors the inside of a manhole after the cable has been laid, and is unable to monitor the condition of the cable passing through the manhole when it is being laid.

[0009] In addition, the invention described in Patent Document 2 uses a camera attached to the end of the cable to view images of the cable in front of it, and is not capable of monitoring the passage of the cable through a manhole when it is being laid.

[0010] The present invention is intended to solve the above-mentioned conventional problems, and provides an underground cable installation monitoring system and an underground cable installation monitoring method that can efficiently monitor the passage status of a cable passing through a manhole when laying an underground cable. [Means for solving the problem]

[0011] In order to solve the above problems, the underground cable laying management system of the present invention is an underground cable laying monitoring system that monitors the laying status of an underground cable laid through a plurality of manholes, and is characterized in having a photographing device installed in each of the plurality of manholes, and a management device that is communicatively connected to the photographing device and stores surveillance images of the insides of the plurality of manholes photographed by the photographing device.

[0012] In a further preferred embodiment, the photographing device and the management device are communicatively connected via communication devices corresponding to each of the plurality of manholes.

[0013] In a further preferred embodiment, the system further comprises a monitoring terminal that is communicatively connected to the management device and displays the monitoring video.

[0014] In addition, the underground cable installation management method of the present invention is an underground cable installation monitoring method for monitoring the installation status of an underground cable installed through a plurality of manholes, characterized in that the inside of the manholes is photographed with a camera device installed in each of the plurality of manholes, and the surveillance images of the inside of the plurality of manholes photographed by the camera device are stored in a management device that is communicatively connected to the camera device. Effect of the Invention

[0015] The underground cable installation management system of the present invention is an underground cable installation monitoring system that monitors the installation status of an underground cable that is installed through a plurality of manholes, and includes a camera installed in each of the plurality of manholes, and a management device that is connected to and communicates with the camera and stores surveillance images of the insides of the plurality of manholes captured by the camera. Therefore, the surveillance images of the plurality of manholes can be stored in the management device and checked, and it is efficient because there is no need to station an operator in each manhole for monitoring.

[0016] In addition, since the photographing device and the management device are communicatively connected via communication devices corresponding to each of the multiple manholes, surveillance footage from the photographing device placed in a manhole with a poor communication environment can be reliably transmitted to the management device.

[0017] Furthermore, by providing a monitoring terminal that is communicatively connected to the management device and displays monitoring images, the installation status of the underground cable can be monitored regardless of location.

[0018] The underground cable installation management method of the present invention is an underground cable installation monitoring method for monitoring the installation status of an underground cable that is installed through a plurality of manholes, in which the inside of the manholes is photographed by a camera device installed in each of the plurality of manholes, and the surveillance images of the inside of the plurality of manholes photographed by the camera device are stored in a management device that is connected to and communicates with the camera devices. Therefore, the surveillance images of the plurality of manholes can be stored in the management device and checked, and it is efficient because there is no need to assign a worker to each manhole for surveillance.

[0019] In this way, according to the present invention, it is possible to provide an underground cable installation monitoring system and an underground cable installation monitoring method that can efficiently monitor the passage status of a cable passing through a manhole when laying an underground cable. [Brief description of the drawings]

[0020] [Figure 1] 1 is a configuration diagram of an underground cable installation monitoring system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram showing a surveillance image of inside a manhole. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Next, an underground cable installation monitoring system and an underground cable installation monitoring method according to an embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 1 is a configuration diagram of an underground cable installation monitoring system 100 according to this embodiment.

[0022] First, the object of monitoring by the underground cable laying monitoring system 100 will be described. A plurality of manholes 1 (three in FIG. 1) are buried underground beneath the ground 3. An underground cable 2, such as an electric wire or a communication line, is passed through a cable pipe (not shown) that is buried underground beforehand. Since the total length of the underground cable 2 is, for example, several hundred meters, the cable pipe is buried via a plurality of manholes 1, and an opening of the cable pipe is provided inside the manhole 1.

[0023] The underground cable 2 is laid underground by passing the underground cable 2 through a cable pipe. Therefore, when laying the underground cable 2, the cable passes from one opening to the other opening in the manhole 1, and the passing status of the cable inside the manhole 1 must be monitored to ensure that the passing cable does not come into contact with equipment, etc., placed inside the manhole 1. The underground cable laying monitoring system 100 is for monitoring the laying status of such underground cables laid through multiple manholes 1.

[0024] The underground cable installation monitoring system 100 mainly comprises a photographing device 10, a communication device 20, a management device 30 and monitoring terminals 40, 60.

[0025] The imaging device 10 is installed in each of the multiple manholes 1, and is capable of capturing surveillance footage of the inside of the manhole 1. For example, it is installed on the wall inside the manhole 1, and the imaging direction is adjusted so that the passing cables are captured. The imaging device 10 is a device with a communication function, such as a network camera. A battery 11, such as a mobile battery, that supplies power is connected to the imaging device 10. The imaging device 10 and the battery 11 are stored in a waterproof box 12, which prevents infiltration of rainwater, etc.

[0026] The communication device 20 corresponds to each of the multiple manholes 1. The covers of the multiple manholes 1 are open, and the communication device 20 can be installed, for example, near the periphery of the opening of each manhole 1. The communication device 20 is communicatively connected to the photographing device 10. The connection method may be either wired or wireless, and the communication device 20 can be, for example, a mobile router capable of connecting to Wi-Fi (registered trademark). The location where the communication device 20 is installed is not limited to the ground, and it may be, for example, on the wall at the top end of the manhole, as long as it is a location where communication connection with the photographing device 10 is possible.

[0027] The management device 30 is communicatively connected via the Internet to the communication devices 20 corresponding to each of the multiple manholes 1. Therefore, the photographing devices 10 and the management device 30 are communicatively connected via the communication devices 20. Surveillance footage of the insides of the multiple manholes 1 photographed by the photographing devices 10 is transmitted to the management device 30 via the communication devices 20 and stored therein. A display unit can also be provided in the management device 30 to cause the management device 30 to display the surveillance footage.

[0028] The monitoring terminal 40 is a monitoring computer for the management department of the company, and is connected to the management device 30 for communication and displays the monitoring video captured by the imaging device 10. The management department of the company monitors the passage status of the cable inside the manhole 1 based on the displayed monitoring video.

[0029] The monitoring terminal 60 is a monitoring computer for use at the site, and is connected for communication with the management device 30 via a communication device 50 such as a mobile router, and is configured to display the monitoring video captured by the imaging device 10. At the cable laying site, the passing status of the cable inside the manhole 1 is monitored using the displayed monitoring video.

[0030] The monitoring terminals 40 and 60 are not limited to personal computers, but may be other devices such as tablet terminals or smartphones.

[0031] It is preferable that the communication connections of the devices in the underground cable laying monitoring system 100 be encrypted.

[0032] An underground cable laying monitoring method using the underground cable laying monitoring system 100 is performed by photographing the inside of a plurality of manholes 1 with a camera device 10 installed in each of the plurality of manholes 1, and storing the surveillance images of the inside of the plurality of manholes 1 photographed by the camera device 10 in a management device 30 that is communicatively connected to the camera device 10.

[0033] FIG. 2 is a schematic diagram showing a surveillance image inside a manhole 1. An opening 4 for a cable pipe is provided on the wall inside the manhole 1. An underground cable 2 passing through the manhole 1 enters the manhole 1 from the opening 4 and exits from an opening on the opposite side (not shown). Alternatively, the underground cable 2 enters the manhole 1 from the opening on the opposite side and exits from the opening 4. Support stands 6, 6 are provided on pillars 5, 5 installed inside the manhole 1 in order to support the underground cable 2 passing through. The imaging device 10 captures surveillance images such as those shown in FIG. 2 and transmits them to the management device 30.

[0034] The underground cable installation management system 100 according to this embodiment is an underground cable installation monitoring system that monitors the installation status of an underground cable 2 that is installed through multiple manholes 1, and has a camera device 10 installed inside each of the multiple manholes 1, and a management device 30 that is communicatively connected to the camera device 10 and stores surveillance images of the insides of the multiple manholes 1 photographed by the camera device 10. Therefore, surveillance images of the multiple manholes 1 can be stored in the management device 30 and checked, which is efficient as it is not necessary to station an operator in each manhole 1 for monitoring.

[0035] Furthermore, since the photographing device 10 and the management device 30 are communicatively connected via the communication devices 20 corresponding to each of the multiple manholes 1, surveillance footage from the photographing device 10 placed in a manhole 1 with a poor communication environment can be reliably transmitted to the management device 30.

[0036] Furthermore, by providing the monitoring terminals 40, 60 which are communicatively connected to the management device 30 and display monitoring images, the laying status of the underground cable 2 can be monitored regardless of location.

[0037] Moreover, the underground cable installation management method according to this embodiment is an underground cable installation monitoring method for monitoring the installation status of an underground cable 2 that is installed through a plurality of manholes 1, in which the inside of the manholes 1 is photographed with a camera device 10 installed in each of the plurality of manholes 1, and the surveillance images of the inside of the plurality of manholes 1 photographed by the camera device 10 are stored in a management device 30 that is communicatively connected to the camera device 10. Therefore, the surveillance images of the plurality of manholes 1 can be stored in the management device 30 and checked, and it is efficient because there is no need to station an operator in each manhole 1 for surveillance.

[0038] In this way, the underground cable installation monitoring system and underground cable installation monitoring method of this embodiment can efficiently monitor the passage status of the cable passing through a manhole when laying the underground cable.

[0039] The above describes the underground cable installation monitoring system and underground cable installation monitoring method according to the embodiment of the present invention, but the present invention is not limited to the above-mentioned embodiment and various other modifications are possible.

[0040] For example, the number of photographing devices 10 installed in one manhole 1 is not limited to one, but two or more may be installed so as to be able to photograph both the entrance side and the exit side of the underground cable 2. [Explanation of symbols]

[0041] 1. Manhole 2 Underground Cable 3 ground 4 Openings 5 pillars 6 Support stand 10. Imaging Device 11. Battery 12 Waterproof box 20. Communications Equipment 30 Management device 40 Surveillance terminal 50 Communication equipment 60 Surveillance terminal 100 Underground cable installation monitoring system

Claims

1. An underground cable installation monitoring system for monitoring an installation status of an underground cable installed through a plurality of manholes, comprising: An underground cable installation management system comprising: a photographing device installed in each of the plurality of manholes; and a management device communicatively connected to the photographing device and storing surveillance images of the inside of the plurality of manholes photographed by the photographing device.

2. 2. The underground cable installation management system according to claim 1, wherein the photographing device and the management device are communicatively connected via a communication device corresponding to each of the plurality of manholes.

3. 3. The underground cable installation monitoring system according to claim 1, further comprising a monitoring terminal communicatively connected to said management device for displaying said monitoring video.

4. 1. An underground cable installation monitoring method for monitoring an installation status of an underground cable installed through a plurality of manholes, comprising: An underground cable installation management method, comprising the steps of: photographing the inside of the manholes with a photographing device installed in each of the manholes; and storing the surveillance images of the inside of the manholes photographed by the photographing devices in a management device that is communicatively connected to the photographing devices.

Images