CN107329135A - A kind of long range submarine cable marine site safety monitoring system - Google Patents

Abstract

The invention discloses a long-distance submarine cable sea area safety monitoring system, which includes a front-end monitoring station and a submarine cable remote monitoring center. The front-end monitoring station includes a video acquisition module, a radar module, a satellite AIS receiving module, a remote control module, The data transmission module, the video acquisition module: communicates with the radar module and the satellite AIS receiving module, and is used to photograph the image information of passing ships on the sea surface above the sea area of the submarine cable; the radar module realizes the search of ships in the sea area of the long-distance submarine cable Function, can be linked with video acquisition module and radar module. The invention can realize the all-weather, all-round and wide-coverage effective monitoring of the ships in the submarine cable sea area. And it can carry out all-weather security monitoring of sea surface moving targets ≥5km under abnormal weather conditions such as night and heavy fog.

Description

A long-distance submarine cable sea area safety monitoring system

technical field

The invention relates to a sea area safety monitoring system for submarine cables, in particular to a long-distance submarine cable sea area safety monitoring system.

Background technique

Submarine cables are an important channel for cross-sea power transmission, and their safe and reliable operation is crucial to the safe operation of island power systems. The sea area where submarine cables are laid is deep, rough, and the sea conditions are complex. There are many passing ships on the channel. Submarine cables are affected by various external forces such as ship anchoring accidents and marine operations, resulting in submarine cable failures and even fracture accidents. According to statistics from the International Conference on Large Power Grids (CIGRE), 80% of submarine cable failures come from external force damage such as ship anchoring and accidents, which seriously affects the safe and stable operation of cross-sea power grids.

In recent years, with the rapid development of my country's social economy, the cross-sea power grid has continued to extend its coverage to the coast and nearby islands with longer distances and higher voltage levels. Especially with the continuous development and utilization of clean energy such as offshore wind farms, more than 10 There are more and more applications for long-distance submarine cables of kilometers. The existing submarine cable sea area monitoring uses an infrared thermal imager and a telephoto large-lens visible light camera to form a maritime video surveillance device. Theoretically, the effective monitoring distance can exceed 3 to 5 kilometers. In an environment where low-level ship anchoring damage occurs frequently, the effective monitoring distance is greatly shortened, and external forces such as ship anchoring damage in submarine cable sea areas cannot be detected and warned in time to cause damage, and the effect of submarine cable disaster prevention is greatly reduced.

Contents of the invention

The purpose of the present invention is to overcome the disadvantages of the prior art, and provide a long-distance submarine cable sea area safety monitoring system that is not affected by weather factors and has a small monitoring blind area.

A long-distance submarine cable sea area safety monitoring system, including a front-end monitoring station and a submarine cable remote monitoring center, the front-end monitoring station includes a video acquisition module, a radar module, a satellite AIS receiving module, a remote control module, and a data transmission module, The video acquisition module: communicates with the radar module and the satellite AIS receiving module, and is used to capture image information of passing ships on the sea surface above the submarine cable sea area; the radar module realizes the ship situation search function in the long-distance submarine cable sea area, and can Linkage with the video acquisition module and the radar module; the satellite AIS receiving module is used to cooperate with the radar module to automatically obtain all detected ship targets in the submarine cable sea area and form track information, and then connect the information to the AIS network. The remote control module is used to carry out remote control and management to each equipment of the front-end monitoring station, and the described data transmission module: transmits the data of the front-end monitoring station back to the submarine cable remote monitoring center through the electric power dedicated communication network, and the described submarine cable remote monitoring The center is used for fusion processing and real-time recording of all the data transmitted by the front-end monitoring station, and distributes the data to the display terminals of the municipal power departments and branches according to the authority of the submarine cable jurisdiction, which includes data transmission storage modules, monitoring centers Module, management work module, remote access module, described data storage module is responsible for the reception of front-end monitoring station data, and effective data is stored, managed, and described monitoring center module combines video data, radar data, satellite AIS three After data fusion, the large-scale and wide-area monitoring situation map formed is displayed on the large screen of the submarine cable monitoring remote center; the target movement track and photoelectric image are automatically saved, and the playback function is supported. The management module realizes the human-computer interaction interface, Complete the data result display and equipment control operation, the remote access module uses VPN tunnel to realize the access of remote computer and mobile phone equipment, and the long-distance submarine cable sea area security monitoring system is still at a certain distance on both sides of the submarine cable Set the warning line. When the satellite AIS receiving module receives the ship information, the AIS data processing module judges whether the ship enters the monitoring warning area. If it enters the warning area, the remote equipment management module calculates the distance between the ship and the coastline. When the distance is less than 5km, the video capture The module enters tracking and shooting. When it is judged that the ship is leaving, the video acquisition module turns to the standby state, otherwise, it enters to recalculate the distance between the ship and the coastline; when the distance is greater than 5km, the radar module enters the dynamic mode to judge whether the ship is leaving the alert Area, if yes, return to the static mode, otherwise return to calculate the distance between the ship and the coastline.

The present invention uses both the video acquisition module and the radar module to monitor the safety of the submarine cable. The video acquisition module is installed on both sides of the landing point of the submarine cable. The video monitoring device captures clear and intuitive images of passing ships, which can meet the needs of submarine cable ship anchors near the coastline. Safety monitoring in sea areas with high incidence of accidents, but the image effect is greatly affected by the climate; the marine optoelectronic integrated radar installed on the commanding heights near the landing point of the submarine cable (such as on a relatively high hill) has a large effective monitoring range and is not affected by night, large Influenced by weather conditions such as fog, but there is a certain range of blind spots and "dead spots" in the surveillance and monitoring of passing ships near the coastline. Through the two sets of devices learning from each other, long-term cooperation, complementary advantages, and fusion linkage, all-weather and all-round safety monitoring of passing ships in long-distance submarine cable sea areas has been realized.

The video acquisition module includes a long-distance infrared thermal imager, an infrared thermal imaging multi-band high-resolution sensor, a telephoto lens, a binocular telephoto visible light camera and a cloud platform.

The radar module includes a radar signal antenna, a transceiver and a data processor.

The radar module can find and determine the position of suspicious targets in nighttime, foggy and other poor visibility conditions, and is linked with the video acquisition module and the radar module.

The satellite AIS receiving module includes a VHF/GPS receiving antenna, a satellite signal receiver and an AIS data processor.

In summary, compared with the prior art, the present invention has the following advantages:

The present invention aims at the problem that the all-weather video monitoring effect of the submarine cable sea area in the prior art is not as good as expected, adopts a maritime radar monitoring system not affected by climate conditions, adopts enhanced visible light imaging, infrared thermal imaging multi-band high-resolution sensors and telephoto lenses , together with the marine radar device constitutes an optoelectronic integrated radar monitoring system, which scans and judges the position of ships in the sea area through radar waves, and jointly realizes all-day and all-weather remote monitoring within a radius of several kilometers. It is also integrated and linked with the automatic ship identification system (AIS) to complement each other's advantages. It can also realize positioning monitoring and monitoring for ships that are not equipped with automatic ship identification system equipment, ships that cannot or deliberately do not send out automatic ship identification signals for some reason, and realize monitoring of submarine cables. All-weather, all-round and wide-coverage effective monitoring of ships in sea areas. And it can carry out all-weather security monitoring of sea surface moving targets greater than or equal to 5km under abnormal weather conditions such as night and heavy fog.

The invention has long-distance, large-scale, multi-target detection, identification and early warning capabilities of possible ship anchorage accidents above the submarine cable sea area; the organic combination and linkage of radar and video photoelectricity realizes all-weather and multi-environment remote discovery, real-time tracking, Danger alarm and intelligent disposal; it is convenient to store, transmit, replay, and query radar, photoelectric and other monitoring data; it is possible to check the on-site alarm situation of the submarine cable sea area and the occurrence of the ship that caused the accident at anchor in real time.

Description of drawings

Figure 1 is a schematic diagram of the composition principle of the long-distance submarine cable sea area safety monitoring system.

Figure 2 is a work flow diagram of the submarine cable sea area safety monitoring system.

Figure 3 is a hardware structure diagram of the submarine cable sea area safety monitoring system.

Figure 4 is a software architecture diagram of the submarine cable sea area safety monitoring system.

detailed description

The present invention will be described in more detail below in conjunction with examples.

Example 1

A long-distance submarine cable sea area safety monitoring system, including a front-end monitoring station and a submarine cable remote monitoring center, the front-end monitoring station includes a video acquisition module, a radar module, a satellite AIS receiving module, a remote control module, and a data transmission module, The video acquisition module: communicates with the radar module and the satellite AIS receiving module, and is used to capture image information of passing ships on the sea surface above the submarine cable sea area; the radar module realizes the ship situation search function in the long-distance submarine cable sea area, and can Linkage with the video acquisition module and the radar module; the satellite AIS receiving module is used to cooperate with the radar module to automatically obtain all detected ship targets in the submarine cable sea area and form track information, and then connect the information to the AIS network. The remote control module is used to carry out remote control and management to each equipment of the front-end monitoring station, and the described data transmission module: transmits the data of the front-end monitoring station back to the submarine cable remote monitoring center through the electric power dedicated communication network, and the described submarine cable remote monitoring The center is used for fusion processing and real-time recording of all the data transmitted by the front-end monitoring station, and distributes the data to the display terminals of the prefectural and municipal power units and branches according to the authority of the jurisdiction of the submarine cable, which includes a data transmission storage module and a monitoring center. Module, management work module, remote access module, described data storage module is responsible for the reception of front-end monitoring station data, and effective data is stored, managed, and described monitoring center module combines video data, radar data, satellite AIS three After data fusion, the large-scale and wide-area monitoring situation map formed is displayed on the large screen of the submarine cable monitoring remote center; the target movement track and photoelectric image are automatically saved, and the playback function is supported. The management module realizes the human-computer interaction interface, Complete data result display and equipment control operation, the remote access module uses VPN tunnel to realize the access of remote computer and mobile phone equipment, and the long-distance submarine cable sea area security monitoring system is also set at 2km on both sides of the submarine cable Set the warning line. When the satellite AIS receiving module receives the ship information, the AIS data processing module judges whether the ship enters the monitoring warning area. If it enters the warning area, the remote equipment management module calculates the distance between the ship and the coastline. When the distance is less than 5km, the video capture The module enters tracking and shooting. When it is judged that the ship is leaving, the video acquisition module turns to the standby state, otherwise, it enters to recalculate the distance between the ship and the coastline; when the distance is greater than 5km, the radar module enters the dynamic mode to judge whether the ship is leaving the alert Area, if yes, return to the static mode, otherwise return to calculate the distance between the ship and the coastline.

Figure 3 is a software architecture diagram of the submarine cable sea area safety monitoring system. Among them, data acquisition control: including submarine cable sea area sea surface cruise, ship tracking and shooting, PTZ control, radar control, photoelectric control, etc.

Data processing: Preliminary screening and judgment of video data, radar data, and AIS data, encoded and encrypted, and then transmitted back to the system central station.

Data fusion management: further screen video data, radar data, and AIS data, judge, complete ship number, speed, course identification, and form ship tracking data.

Comprehensive display: form track information, draw monitoring situation map, and provide man-machine interface to management work platform.

VPN management: remote device (computer, mobile terminal user) access encryption control.

System management: comprehensively deploy all system resources to realize three-dimensional monitoring of passing ships in submarine cable sea areas.

The following is a long-distance submarine cable monitoring case of Fujian Nanri Island Wind Farm

Fujian Nanri Island Wind Farm sent out a submarine cable with a length of more than 10km. The video surveillance system using the Fujian Pingtan submarine cable (about 3.5km in length) obviously cannot meet the real-time monitoring needs of the sea area where the long-distance submarine cable is located, so it has increased A set of optoelectronic integrated marine radar device, combined with the far and near video device installed near the coastline, realizes all-weather and all-round safety monitoring of passing ships in the long-distance submarine cable sea area of Fujian Nanri Island Wind Farm.

The long-distance submarine cable sea area safety monitoring system does not need to rely on other systems and can operate independently. It can also be remotely connected to the submarine cable monitoring center in the Fujian Power Transmission and Transformation Equipment Online Monitoring and Diagnosis System (OMDS) through a dedicated communication network with the power system to detect the seabed in real time. All ship targets in the sea area of the cable warning area, regardless of whether the target ship is equipped with an automatic identification system (AIS), or whether the AIS is turned on or not, can form a full-coverage situation for all targets, and realize the non-stop detection of passing ships in the long-distance submarine cable sea area. The safety monitoring of the gap ensures the safe and stable operation of the cross-sea power grid.

Since there are many passing ships and other targets in the sea area of Nanri Island, Fujian, according to the regulations of the International Maritime Organization, all international voyage ships of 300 gross tonnage and above, and non-international voyage ships of 500 gross tonnage and above, as well as all passenger ships, must be equipped with ship automatic Identification system Ship automatic identification system. The photoelectric radar system combined with the built-in AIS device provides a screening function, which reduces the number of suspicious ships and narrows the suspicious range by screening ships passing by normally.

The long-distance submarine cable sea area safety monitoring system automatically recruits ships entering the submarine cable warning area, forms track information for all detected ship targets, and connects to the ship automatic identification system network to fuse the same target and display it on the large screen of the submarine cable monitoring center For real-time display on the surface, the surface ship targets can basically be divided into the following three categories:

1) Civilian ships, official ships, and fishing boats of 500 gross tonnage and above with AIS system installed and activated. Such ships may cause anchor damage to submarine cables and should be paid attention to.

2) Illegal fishing boats and sand dredging boats over 300 gross tons that have not turned on or installed AIS systems. This type of ship has the greatest impact on the possible anchorage damage of submarine cables, and should be given special attention.

3) Other unknown targets not equipped with AIS system include military ships, fixed targets, small sampans or motorboats with no automatic identification system for ships under 300 gross tons, etc. Such ships have little effect on the operation of submarine cables.

The parts not described in this embodiment are the same as the prior art.

Claims (4)

1. A long-distance submarine cable sea area safety monitoring system is characterized in that: it includes a front-end monitoring station and a submarine cable remote monitoring center, and said front-end monitoring station includes a video acquisition module, a radar module, a satellite AIS receiving module, a remote control module, data transmission module, the video acquisition module: communicates with the radar module and the satellite AIS receiving module, and is used to capture the image information of passing ships on the sea surface above the sea area of the submarine cable; The situation search function can be linked with the video acquisition module and the radar module; the satellite AIS receiving module is used to cooperate with the radar module to automatically obtain all detected ship targets in the submarine cable sea area and form track information, and then connect the information to the AIS network, the remote control module is used to remotely control and manage each equipment of the front-end monitoring station, and the data transmission module: transmits the data of the front-end monitoring station back to the submarine cable remote monitoring center through the electric power dedicated communication network, and the described The submarine cable remote monitoring center is used to integrate and process all the data transmitted by the front-end monitoring station and record in real time, and distribute the data to the display terminals of the municipal power departments and branches according to the authority of the submarine cable jurisdiction, which includes data transmission Storage module, monitoring center module, management work module, remote access module, described data storage module is responsible for the reception of front-end monitoring station data, and stores and manages effective data, and described monitoring center module will video data, radar data After the data fusion of satellite AIS and satellite AIS, the large-scale and wide-area monitoring situation map formed is displayed on the large screen of the submarine cable monitoring remote center; the target motion track and photoelectric image are automatically saved, and the playback function is supported. The management module realizes The human-computer interaction interface completes the display of data results and equipment control operations. The remote access module uses the VPN tunnel to realize the access of remote computers and mobile phone devices. The long-distance submarine cable sea area security monitoring system is still in the submarine cable A warning line is set at a certain distance on both sides. When the satellite AIS receiving module receives the ship information, it judges whether the ship enters the monitoring warning area through the AIS data processing module. If it enters the warning area, the remote equipment management module calculates the distance between the ship and the coastline. When the distance is less than When the distance is 5km, the video acquisition module enters tracking and shooting. When it is judged that the ship is leaving, the video acquisition module turns to the standby state, otherwise, it enters to recalculate the distance between the ship and the coastline; Whether the ship has left the warning area, if yes, return to the static mode, otherwise return to calculate the distance between the ship and the coastline. 2. The long-distance submarine cable sea area safety monitoring system according to claim 1, characterized in that: the video acquisition module includes a long-distance infrared thermal imager, an infrared thermal imaging multi-band high-resolution sensor and a telephoto lens , binocular telephoto visible light camera and PTZ. 3. The long-distance submarine cable sea area safety monitoring system according to claim 1, wherein the radar module includes a radar signal antenna, a transceiver and a data processor. 4. The long-distance submarine cable sea area safety monitoring system according to claim 1, characterized in that: the satellite AIS receiving module includes a VHF/GPS receiving antenna, a satellite signal receiver and an AIS data processor.