CN116647941A - Whole-ship wireless network system based on Mesh communication - Google Patents
Whole-ship wireless network system based on Mesh communication Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/50—Connection management for emergency connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application relates to a Mesh communication-based full-ship wireless network system, which is divided into two functional types, wherein a built-in module can meet the basic requirements of a remote PSC function and a visual maritime search and rescue system, the top layer design of a maritime information system is used as guidance, the safety of data is used as safety logic, and a full-ship wireless network communication system based on an MESH network is designed, and the full-ship wireless network system comprises a network basic layer which takes an MESH communication basis, VSAT transmission and a fourth-generation and fifth-generation wireless communication network as the system; the system comprises a link control layer consisting of radio frequency hopping management, SD-WAN link selection and system security authentication, and an application display layer taking a remote PSC operation system, a visual maritime search and rescue system and an emergency link management system as the systems.
Description
Technical Field
The application belongs to the field of communication systems, relates to an offshore ship wireless network system, and particularly relates to a Mesh communication-based full-ship wireless network system.
Background
The ship inspection relates to ship marine safety, but because the network signal coverage in the ship is poor, the network signal in the cabin is mainly shielded by the metal ship body, so that key equipment in the cabin, such as a host, an oil-water separator, a domestic sewage treatment device and the like, cannot be inspected in real time, the timeliness and the effectiveness of the inspection are obviously reduced, and great potential safety hazards exist.
The difficulty of offshore communication is lack of coverage of signals, and coverage of existing network systems such as ports and public network communication systems around the coast is low, which causes a blind spot of network communication. Taking the local inspection of the Tianjin maritime bureau as an example, the currently mainly used offshore communication system is a near-shore 4G public communication system, and because the shielding capability of a metal enclosed space in a cabin to radio is strong, a signal coverage blind area is caused; common network communication equipment such as mobile phones and wireless WIFI cannot work in the environment, and the cabin is precisely the key point of PSC inspection, so that remote PSC inspection cannot be solved without solving wireless communication coverage in the cabin.
Mesh communication technology is derived from IEEE engineering society, and is based on AD HOC technology, and is a distributed wireless network system. Formed by dynamic links from node to node. The network system is temporarily formed without relying on an existing network architecture, such as a router for a wired system or a wireless network base station for a wireless system. Instead, each node has the ability to forward network packets to other nodes (this is called routing). Mesh networks are a relatively "stable topology" network, except for occasional node failures or addition of new nodes. The path of traffic is aggregated by a large number of end users and does not change frequently. In practice, all traffic in an infrastructure mesh network is forwarded to or from one gateway, while in a wireless ad hoc network or a customer mesh network, traffic flows between arbitrary node pairs.
Upon searching, the following closely published patent techniques were found.
A wind power station wireless network system (application number 202010282212.9) based on plain open land features belongs to the technical field of wind power station wireless networks, and solves the technical problems that: how to construct a stable, full-coverage and suitable for the wind farm station of plain open land, it includes at least one Mesh router set up on booster station, at least one Mesh fixed node apparatus set up on the top of the blower, at least one unmanned aerial vehicle carrying the Mesh module and at least one Mesh terminal; the Mesh router, the Mesh fixed node equipment and the unmanned aerial vehicle are interconnected to form a wireless backbone network, the wireless backbone network is connected with the wind power plant network through the Mesh router, and the Mesh terminal is connected into the wireless backbone network through the Mesh fixed node equipment or the unmanned aerial vehicle. The application can realize stable wireless network communication.
A mobile communication system (201310016417.2) that may provide wireless communication support for mobile subscribers on a marine vessel. The system is formed by combining a cellular mobile communication network, an offshore mobile ad hoc network and a satellite mobile communication network through a shipboard satellite gateway, a shipboard cellular gateway and a land gateway. The system provides a plurality of communication methods for offshore mobile users and onshore users. The offshore mobile user and the onshore user can select a proper wireless communication network to establish communication connection through the wireless network selection method disclosed by the application. By the device and the method, the deployment cost of the communication network and the communication cost of the mobile user can be reduced, the supported mobile terminal type can be expanded, and richer services can be provided for the offshore mobile user.
The comparison analysis shows that the disclosed prior application application has a great difference from the application in application field or specific technical scheme, solves different technical problems, and can generate different technical effects. The scheme of the application has the practicability, novelty and creativity specified by the patent law.
Disclosure of Invention
The application aims to overcome the defects of the prior art, and provides a Mesh communication-based full-ship wireless network system, which realizes full-ship wireless network communication and improves the informatization degree of maritime law enforcement.
The application solves the technical problems by adopting the following technical scheme:
the utility model provides a full ship wireless network system based on Mesh communication which characterized in that: the network base layer consists of a MESH communication base, VSAT transmission and a fourth generation/fifth generation wireless communication network;
a link control layer consisting of radio frequency hopping management, SD-WAN link selection and system security authentication;
an application display layer is composed of a remote PSC operation system, a visual maritime search and rescue system and an emergency link management system.
Moreover, the MESH communication infrastructure includes an adaptive radio module and a wireless communication module.
Moreover, the adaptive radio module includes a directional antenna and an omni-directional antenna, wherein the directional antenna is deployed in plurality on the vessel and the omni-directional antenna is mounted upside down on the nacelle.
And moreover, the wireless communication module adopts a MESH wireless ad hoc network system.
The specific structure of the system comprises a control command subsystem and a plurality of Mesh-PCS ship end systems, wherein each Mesh-PCS ship end system comprises an operation subsystem and a Mesh communication subsystem, and the operation subsystem, the Mesh communication subsystem and the control command subsystem form a Mesh search and rescue command system together; the Mesh-PCS ship side system also comprises a support transmission subsystem.
Moreover, the control command subsystem comprises a vision storage module, an interaction control module and an adaptive radio control module.
And the operation subsystem comprises a video acquisition module and an interaction module, the Mesh communication subsystem comprises an adaptive radio module and a wireless communication module, and the support transmission subsystem comprises a disinfection delivery box and a private network transmission module.
The application has the advantages and positive effects that:
1. the system is based on a wireless network covering the whole ship, and by testing the real-time remote port national supervision and inspection of the whole ship, the application feasibility of the business such as ship safety inspection, maritime search and rescue, maritime investigation and the like in the network environment is further improved, and the maritime law enforcement informatization degree is improved.
2. The system realizes the wireless network communication of the whole ship, realizes no dead angle in the ship, and can realize the communication of the whole ship.
3. The system integrates video voice communication and high-speed network.
4. The system is integrated into a set of equipment, is convenient to maintain, has strong system adaptation capability, reliable use speed and network, and can be rapidly deployed and used; individual soldiers can search and rescue ships, and work efficiency after application concentration is guaranteed.
Drawings
FIG. 1 is a block diagram of a full ship wireless network system based on MESH communication.
Fig. 2 is a diagram of a whole-ship wireless network system structure based on Mesh communication.
Fig. 3 is a schematic diagram of a remote PSC device deployment location.
Detailed Description
The application will now be described in further detail by way of specific examples, which are given by way of illustration only and not by way of limitation, with reference to the accompanying drawings.
A Mesh communication-based full-ship wireless network system is designed by taking the top layer design of a maritime information system as a guide and taking the security of data as a security logic, the network model of the system is shown in the figure 1,
taking a MESH communication foundation, VSAT transmission and a fourth generation/fifth generation wireless communication network as a network foundation layer of the system; a 4G/5G wireless network or a VSAT network may be used on the network egress;
radio frequency hopping management, SD-WAN link selection and system security authentication are used as a link control layer of the system; the SD-WAN mode networking switching is used, the SD-WAN tunnel is not influenced when the IP address of the client carrying line changes, the SD-WAN tunnel is not interrupted, and the normal operation of communication is ensured;
the remote PSC operation system, the visual maritime search and rescue system and the emergency link management system are used as application display layers of the system.
The MESH communication foundation comprises an adaptive radio module and a wireless communication module;
the adaptive radio module comprises a directional antenna and an omnidirectional antenna, wherein the directional tracking antenna has excellent wind wave resistance servo tracking performance, a wind wave algorithm, an advanced mechanical structure and a sensitivity gyroscope are arranged, antenna nodes of a plurality of directional antennas can be deployed, fixed base station data are built in an ACU, the base station is easily switched, a database can be manually expanded, and the signal receiving capability is high.
Directional antenna parameters
Omnidirectional antenna
Omni-directional antennas are very easy to install. With a 360 degree horizontal radiation pattern it is even possible in this scenario to mount it upside down on the nacelle, furthermore its shape is very convenient for connecting such an antenna to the host. Such an antenna may be used if it is desired to cover all horizontal directions from the antenna with varying degrees of vertical coverage. Polarization refers to the physical direction of electromagnetic wave vibrations of an antenna that actually emits radio frequency energy. For example, omni-directional antennas are typically vertically polarized antennas.
Omnidirectional antenna parameters
| Project | Main parameters |
| Antenna size | 1.2M |
| Antenna weight | 3KG |
| Operating frequency | Frequency band (900-2150 MHz) |
| Gain of | 7dBi |
| Standing wave ratio | ≤1.8 |
| Polarization mode | Dual polarization (vertical + horizontal) |
| Input impedance | 50Ω |
| Horizontal beam width | (H)5.5°；(V)5.5° |
| Vertical beam width | (H)5.5°；(V)5.5° |
The wireless communication module adopts a MESH wireless ad hoc network system which is equal to all nodes of a centerless same-frequency system, and single frequency point support has TDD bidirectional communication, so that the frequency management is simple and the frequency spectrum utilization rate is high; 32 nodes can be supported, and quick deployment and flexible networking can be realized; the node can be registered for networking in second level after being powered on, so that communication can be quickly established when the system node is re-networked after being offline; when the network topology changes, the system can quickly respond to the topology change and quickly reconstruct a routing system, so that the smoothness of information is ensured; if the rest bandwidth of a certain optimal path link is insufficient, the MESH wireless ad hoc network can automatically select suboptimal information transmission; multiple team members can split or quickly combine the simmered elements to establish a new network topology; any network topology is supported, such as point-to-multipoint, chain relay, mesh network, hybrid network, and the like. The peak data bandwidth of the MESH wireless ad hoc network system is 80Mbps. The node has the capacity of non-fixed mobile transmission, and the fast movement does not affect the high data bandwidth service, such as the service of voice, data and video, and is not affected by the fast change of the system topology structure and the restriction of the high-speed movement of the terminal. Through an external filter, out-of-band harmonic interference is effectively inhibited, and the anti-interference performance and the signal-to-noise ratio of signals are improved. Meanwhile, an ARQ (automatic repeat request) transmission mechanism is adopted, so that the loss rate of data transmission is reduced, and the reliability of data transmission is improved. In addition, the self-provided frequency sweeping function can manually configure and select the frequency less affected by interference to set the center frequency point according to the frequency sweeping result of the matched center frequency point, so as to realize interference frequency avoidance. The MESH wireless ad hoc network system has strong multipath resistance, supports automatic wireless relay transmission, supports multi-hop relay communication for all nodes in the system, and can adapt to various terrains and application scenes. The MESH wireless ad hoc network system does not affect the use of the whole network when single node equipment fails. The wireless MESH network is a MESH networking structure, so that when a certain node in the network fails, the forwarding task originally carried out by the node is guided by a routing protocol to carry out relay transmission through other nodes and select the optimal transmission path, the whole network can still self-heal and normally work, the disaster tolerance reliability of the wireless MESH network is greatly improved, and meanwhile, the wireless MESH network has good fault tolerance performance. The system can effectively prevent illegal users from invading the network by setting working frequency points, and encrypting the multi-lock grouping such as carrier bandwidth, scrambling codes (namely MESID), communication distance, networking modes and the like, and can ensure legal network access only when the multiple items are completely matched and consistent; the system is fully independently developed, the transmission protocol is a fully self-defined protocol, the air interface transmission adopts a 64bit key, a scrambling sequence can be dynamically generated, channel encryption is realized, and the high safety of information transmission is ensured; in addition, the system supports source encryption for DES/AES128/AES256 (optional mating). The MESH wireless ad hoc network system adopts the design concept of full IP, supports the non-differential transparent transmission of various data at present, is easy to interconnect and communicate with other heterogeneous communication systems (such as public networks, private networks, defending and microwave and the like), and can realize the real-time interaction of multimedia services. The MESH wireless ad hoc network system supports real-time transmission of voice, image, data and positioning information (GPS/beidou). All nodes can be matched with a control terminal for use, and various management and scheduling functions are realized through configured MESH ad hoc network terminal system software. And the mobile interaction platform configured by the MESH ad hoc network terminal system software can also be used for carrying out real-time service transmission with the mobile phone terminal.
The system realizes the system multiplexing between two applications of the visual maritime search and rescue system and the remote PSC module through the communicated radio module, the specific structure is shown in the figure 2,
the system comprises a control command subsystem and a plurality of Mesh-PCS ship end systems, wherein two Mesh-PCS ship end systems are displayed in the system shown in the attached drawing of the embodiment, and the number of the ship end systems is not limited in practical application. The control command subsystem comprises a vision storage module, an interaction control module and an adaptive radio control module.
Each Mesh-PCS ship end system comprises an operation subsystem and a Mesh communication subsystem, wherein the operation subsystem, the Mesh communication subsystem and the control command subsystem form a Mesh search and rescue command system; the Mesh communication subsystem comprises an adaptive radio module and a wireless communication module.
The Mesh-PCS ship side system also comprises a support transmission subsystem, wherein the support transmission subsystem comprises a disinfection delivery box and a private network transmission module.
In the aspect of collecting search and rescue requirements, the maritime search and rescue center and the front line command part can transmit video and audio signals back to conduct research, judgment and disposal through the command ship, and communication connection between maritime ships needs to rely on Mesh communication as communication connection guarantee between ships. The Mesh communication can ensure the dynamic connection between the ships, namely the ship can run on the sea and execute tasks, and the communication conditions can be met only in the communication range, so that the communication of any point in the area can be completed.
The remote PSC is required to cover the network communication capacity of the whole ship, mesh radio frequency signals and own network baseband are used, so that the communication coverage requirement is strict, the lower deck steering engine room and the bottom cabin are subjected to signal receiving signal shielding influence of wireless points due to the sealing performance of a watertight door, mesh communication equipment with good penetrating power is used in a key area, and the network coverage of the whole ship can be completed by adopting general equipment in other parts.
The testing process comprises the following steps:
the remote PSC is required to cover the network communication capacity of the whole ship, mesh radio frequency signals and self network baseband are used, the lower deck steering engine room and the bottom cabin are subjected to wireless point signal receiving signal shielding influence due to the sealing performance of a watertight door, mesh communication equipment with good penetrating power is used in a key area, and the network coverage of the whole ship can be completed by adopting general equipment in other parts.
According to the system design, a plurality of Mesh modules are used for serial connection and matched with a small antenna, the system is connected to a video module to serve as a video source, and a 4G routing module serves as an external transmission node for testing. The Mesh module is deployed in the drawing, the 4G routing module is deployed outside the cabin to ensure data connection, and all node capacities are recorded and tested.
According to the system design, a plurality of Mesh modules are used for performing star network connection and matching with an omni-directional antenna, the system is connected to a video compression module to serve as a video source, and each ship deploys one set of system.
Test results:
remote PSC operation test
According to the test requirements, the Mesh network-based full-ship wireless communication system can meet the requirements of remote PSC operation, can realize full-process high-definition video call, and can carry out full-process video recording on the remote PSC, so that the network is stable, and the system design requirements are met.
Search and rescue video transmission
According to the test requirements, the Mesh network-based whole-ship wireless communication system can realize the search and rescue video transmission function requirements, can realize the whole-course high-definition search and rescue video transmission, can realize the point-to-point and point-to-multipoint communication transmission, can realize the cross backup function by the star network, and can realize the network transmission even if one node has a problem.
Through searching and rescuing video transmission test, the test target is realized, and the emergency searching and rescuing effect is realized through integrating the communication capacity and signals of on-site video and audio.
Although the embodiments of the present application and the accompanying drawings have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the application and the appended claims, and therefore the scope of the application is not limited to the embodiments and the disclosure of the drawings.
Claims (7)
1. The utility model provides a full ship wireless network system based on Mesh communication which characterized in that: the network base layer consists of a MESH communication base, VSAT transmission and a fourth generation/fifth generation wireless communication network;
a link control layer consisting of radio frequency hopping management, SD-WAN link selection and system security authentication;
an application display layer is composed of a remote PSC operation system, a visual maritime search and rescue system and an emergency link management system.
2. The Mesh communication-based full ship wireless network system according to claim 1, wherein: the MESH communication base includes an adaptive radio module and a wireless communication module.
3. The Mesh communication-based full ship wireless network system according to claim 2, wherein: the adaptive radio module includes a directional antenna and an omni-directional antenna, wherein the directional antenna is deployed in plurality on the vessel and the omni-directional antenna is mounted upside down on the pod.
4. The Mesh communication-based full ship wireless network system according to claim 2, wherein: the wireless communication module adopts an MESH wireless ad hoc network system.
5. The Mesh communication-based full ship wireless network system according to claim 1, wherein: the system comprises a control command subsystem and a plurality of Mesh-PCS ship end systems, wherein each Mesh-PCS ship end system comprises an operation subsystem and a Mesh communication subsystem, and the operation subsystem, the Mesh communication subsystem and the control command subsystem form a Mesh search and rescue command system together; the Mesh-PCS ship side system also comprises a support transmission subsystem.
6. The Mesh communication-based full ship wireless network system according to claim 5, wherein: the control command subsystem comprises a vision storage module, an interaction control module and an adaptive radio control module.
7. The Mesh communication-based full ship wireless network system according to claim 5, wherein: the operation subsystem comprises a video acquisition module and an interaction module, the Mesh communication subsystem comprises an adaptive radio module and a wireless communication module, and the support transmission subsystem comprises a disinfection delivery box and a private network transmission module.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117782570A (en) * | 2024-02-28 | 2024-03-29 | 南京典格信息技术有限公司 | Mesh ad hoc network-based life prediction system and method for offshore wind turbine |
| CN117782570B (en) * | 2024-02-28 | 2024-05-14 | 南京典格信息技术有限公司 | Mesh ad hoc network-based life prediction system and method for offshore wind turbine |
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2023
- 2023-06-08 CN CN202310674776.0A patent/CN116647941A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117782570A (en) * | 2024-02-28 | 2024-03-29 | 南京典格信息技术有限公司 | Mesh ad hoc network-based life prediction system and method for offshore wind turbine |
| CN117782570B (en) * | 2024-02-28 | 2024-05-14 | 南京典格信息技术有限公司 | Mesh ad hoc network-based life prediction system and method for offshore wind turbine |
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