CN213073121U - Shipborne data communication switching system - Google Patents
Shipborne data communication switching system Download PDFInfo
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- CN213073121U CN213073121U CN202021927095.9U CN202021927095U CN213073121U CN 213073121 U CN213073121 U CN 213073121U CN 202021927095 U CN202021927095 U CN 202021927095U CN 213073121 U CN213073121 U CN 213073121U
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Abstract
The utility model relates to a the utility model provides a ship-borne data communication switched systems. The shipborne data communication switching system autonomously selects a communication mode according to the communication state of a communication link through the industrial personal computer, and selects whether video data in the network video recorder is accessed to a 4G network or a satellite communication network through judging the communication state, so that the interaction of communication data is carried out with the land through adopting a 4G communication transceiver or a satellite communication transceiver. In addition, the shipborne data communication switching system can complete the autonomous selection of the communication link only by adopting an industrial personal computer, a 4G communication transceiver, a satellite communication transceiver, a multi-way switch and a network video recorder, and has the characteristics of simple structure and low cost.
Description
Technical Field
The utility model relates to a marine communication field especially relates to a shipborne data communication switched systems.
Background
The maritime wireless communication is almost the only way for fishermen on the ship to contact with the outside, and for shoreside shipowners and family members to acquire information on the ship, and plays an important role in acquiring information such as fishing ship safety, emergency relief, fishing information, crew state, shipborne equipment state and the like. In recent years, 4G communication technology is developing vigorously in terrestrial communication systems, increasingly showing advantages in data bandwidth. The coastal 4G network can realize the functions of basic video and voice communication, data transmission, remote monitoring and the like, and can provide high-efficiency sea surface value-added service. By adopting the schemes of multi-antenna enhancement technology, increasing transmitting power, proper base station site selection and the like, the sea surface coverage range of the 4G signals can reach 70 km. The relay technology is largely used in 4G communication, and the possibility of carrying out a wider range of offshore coverage by means of landforms and facilities such as islands, reefs, buoys and the like at sea is provided.
Fishery vessels are generally small in tonnage and frequently come and go in fishing ports and operation sea areas. At present, China fishery is a weak industry, and the majority of fishermen still belong to people with low income and are sensitive to the communication cost. The 4G communication can well meet the communication requirements of fishermen in offshore, near-island and fishing ports.
However, the fishing operation area generally exceeds the 4G signal coverage, and based on the defect, satellite communication is generally adopted in the prior art. The satellite communication has the advantages of wide area coverage, almost no influence of weather and geographic conditions, all-weather operation all the day and the like, has strong system survivability, and can still normally operate under emergency conditions such as natural disasters, emergencies and the like. According to incomplete statistics, at least 2 tens of thousands of fishing boats are installed and used with satellite communication equipment by the end of 2017. However, the cost of the satellite communication equipment is high, the application of the satellite communication in fishery is limited, and the use duration and frequency of personnel on the ship can be limited even if some ships are provided with the satellite communication equipment.
In this case, a feasible solution is to adopt 4G communication as much as possible to realize the transmission of ship-shore information under the condition of 4G signal coverage. Under the condition of no 4G signal coverage, the ship and shore information is transmitted by adopting satellite communication. The conventional switching between the two communication modes generally adopts a manual selection mode, which requires a human to judge whether signal switching is needed. Because whether the 4G signal exists or not is difficult to know in time manually, even if the 4G signal exists, frequent switching is needed, the problems of untimely switching or wrong switching and the like are caused, and further, the fishing boat is not switched to a satellite communication link in time under the condition that the fishing boat sails without the coverage of the 4G signal, and the states of communication interruption and fishing boat loss of connection are generated; or, the problem that the cost is wasted is caused because the ship is not switched to the 4G network in time under the condition that the ship sails to have the 4G signal coverage, and the practical satellite communication flow is continued. In addition, when video monitoring exists, the video monitoring equipment also needs to be manually switched, and the operation is complicated.
Therefore, it is an urgent technical problem to be solved in the art to provide a ship-borne data communication system capable of autonomously performing communication signal switching.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, and can independently carry out the on-board data communication switched systems that communication signal switched to reduce the on-board communication cost.
In order to achieve the above object, the utility model provides a following scheme:
an on-board data communication switching system comprising: the system comprises an industrial personal computer, a 4G communication transceiver, a satellite communication transceiver, a multi-way switch and a network video recorder;
a first network port of the industrial personal computer is connected with a first signal interface of the 4G communication transceiver; a second network port of the industrial personal computer is connected with a first signal interface of the satellite communication transceiver; the control port of the industrial personal computer is connected with the signal input interface of the multi-way switch; a first network port of the multi-way switch is connected with a second signal interface of the 4G communication transceiver; a second network port of the multi-way switch is connected with a second signal interface of the satellite communication transceiver; a third network port of the multi-way switch is connected with a signal output port of the network video recorder;
the industrial personal computer is used for detecting the communication state of the communication link of the 4G communication transceiver in real time and selecting whether to perform signal interaction with the 4G communication transceiver or perform signal interaction with the satellite communication transceiver according to the communication state of the communication link; the industrial personal computer is also used for generating a selection signal according to the communication state of the communication link; the multi-way switch is used for accessing the network video recorder to a 4G communication network or a satellite communication network according to the selection signal; the communication state of the communication link is the presence of a 4G communication signal.
Preferably, the industrial personal computer further comprises a plurality of connection ports; each connecting port is connected with a data source; and the data source is used for carrying out information source data interaction with the industrial personal computer.
Preferably, the 4G communication transceiver includes: a 4G antenna;
the 4G antenna is used for converting 4G wireless signals and electric signals.
Preferably, the satellite communication transceiver comprises: a satellite communication antenna;
the satellite communication antenna is used for converting satellite wireless signals and electric signals.
Preferably, the multi-way switch includes: an FPGA and a selection switch;
the FPGA is connected with the selection switch; the FPGA is used for switching the connecting path of the selection switch according to the selection signal.
Preferably, the selection switch is a single-pole double-throw switch.
Preferably, the onboard data communication switching system further comprises a plurality of cameras;
the plurality of cameras are connected with the network video recorder; the camera is used to generate video data.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect: the utility model provides a shipborne data communication switched systems, communication state according to communication link through the industrial computer, independently select communication mode to through judging that video data among the communication state selection network video recorder inserts the 4G network or inserts the satellite communication network, and then carries out communication data's interaction through adopting 4G communication transceiver or satellite communication transceiver and land.
And, the utility model provides a shipborne data communication switched systems only adopts industrial computer, 4G communication transceiver, satellite communication transceiver, multi-way switch and network video recorder just can accomplish the autonomic selection of communication link, has simple structure, low cost's characteristics.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a shipborne data communication switching system provided by the present invention;
fig. 2 is a schematic structural diagram of a multi-way switch in an embodiment of the present invention;
fig. 3 is a flowchart of the work flow of the shipborne data communication switching system provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a simple structure, and can independently carry out the on-board data communication switched systems that communication signal switched to reduce the on-board communication cost.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 is the utility model provides a pair of shipborne data communication switched systems's schematic structure diagram, as shown in fig. 1, a shipborne data communication switched systems, include: the system comprises an industrial personal computer, a 4G communication transceiver, a satellite communication transceiver, a multi-way switch and a network video recorder.
And a first network port of the industrial personal computer is connected with a first signal interface of the 4G communication transceiver. And a second network port of the industrial personal computer is connected with a first signal interface of the satellite communication transceiver. And a control port (RS485) of the industrial personal computer is connected with a signal input interface of the multi-way switch. And a first network port (network port 1) of the multi-way switch is connected with a second signal interface of the 4G communication transceiver. And a second network port (network port 2) of the multi-way switch is connected with a second signal interface of the satellite communication transceiver. And a third network port (network port 3) of the multi-way switch is connected with a signal output port of the network video recorder.
The industrial personal computer is used for detecting the communication state of the communication link of the 4G communication transceiver in real time and selecting whether to perform signal interaction with the 4G communication transceiver or perform signal interaction with the satellite communication transceiver according to the communication state of the communication link. The industrial personal computer is also used for generating a selection signal according to the communication state of the communication link. Namely, the industrial personal computer is responsible for judging whether to switch the communication network or not, selecting the video transmission network and the like.
The multi-way switch is used for connecting the network video recorder to the 4G communication network or the satellite communication network according to the selection signal. The network video recorder is used for storing and transmitting the data of the plurality of paths of cameras. Wherein, the communication state of the communication link is that a 4G communication signal exists.
Wherein, in order to further perfect the utility model provides a technical scheme, above-mentioned 4G communication transceiver includes: 4G antenna. The 4G antenna is used for converting 4G wireless signals and electric signals. The satellite communication transceiver includes: a satellite communications antenna. Satellite communication antennas are used to convert satellite radio signals into electrical signals. Based on the arrangement, the data receiving and transmitting of the 4G network or satellite communication between the ship and offshore, near-island and fishing port can be facilitated.
As a preferred embodiment of the present invention, the industrial personal computer further includes a plurality of connection ports (port 1, port 2, … …, port N). Each port is connected to a data source (data source 1, data source 2, … … data source N). And the data source is used for carrying out information source data interaction with the industrial personal computer. Wherein, the specific number of the ports is selected according to actual needs.
Based on the setting, the industrial personal computer receives and sends information source data of each data source through a plurality of connecting ports. These connection ports may be network ports, USB, RS232, RS485, etc. The industrial personal computer is embedded with each port communication protocol analysis function so as to pack the acquired data and unpack the data transmitted from the shore.
As another preferred embodiment of the present invention, as shown in fig. 2, the multiway switch includes: a Field-programmable gate array (FPGA) and a select switch. The selection switch is preferably a single pole double throw switch.
The FPGA is connected with the selection switch. The FPGA is used for switching the connecting path of the selection switch according to the selection signal.
The specific switching process of the multi-way switch is as follows: the industrial personal computer is used for controlling and taking charge of accessing the video data to a 4G network or a satellite communication network according to the state of a communication link. That is, when 4G is selected for video transmission, port 3 is communicated with port 1, and when satellite communication is selected for data transmission, port 3 is communicated with port 2. Wherein, the switching process is taken charge of by the FPGA.
In addition, in order to carry out omnidirectional data monitoring to on the ship and its surrounding environment, the utility model provides a ship-borne data communication switched systems still includes a plurality of cameras (camera 1, camera 2, … …, camera M). And the plurality of cameras are all connected with the network video recorder. The camera generates video data.
Facing down the utility model provides a shipborne data communication switched systems's specific work flow explains, so that the utility model provides a shipborne data communication switched systems's advantage is more vivid.
The utility model provides a communication link's that carries on switching principle mainly follows two points in shipborne data communication switched systems's the course of work: 1) in the case of a 4G network, the 4G network is used as much as possible. 2) While video transmission is in progress, switching is not performed as much as possible.
Based on this communication link switching principle, the process of automatic communication link switching is shown in fig. 3, and mainly includes:
the whole system is started.
The satellite communication link is closed by the master control in preparation for detecting whether 4G communication is possible. Because the satellite communication signal coverage exists all the time, if the satellite communication link is not closed first, the main control computer detects that the communication network is always smooth, and therefore whether the 4G communication can be carried out or not cannot be determined.
The multi-way switch selects the communication between the network port 1 and the network port 3. Namely, the network video recorder is switched to the 4G communication network, and the switching process is controlled by the main control computer through the R485 interface.
At this time, the main control computer checks whether the system is communicated with the external communication or not in a PING command mode. If the communication is available, the check is carried out after waiting for T1 minutes. Wherein T1 may be a relatively short time, such as 1 minute, 2 minutes, etc. The check can not influence the external normal communication process of the system, and can avoid the condition of long-time network disconnection. If not, the 4G communication signal is uncovered, and the 4G communication cannot be used.
When the 4G communication cannot be used, it is necessary to connect the multiplexer selection port 2 and the port 3. Namely, the network video recorder is switched to the satellite communication network, and the switching process is controlled by the main control computer through the R485 interface.
The satellite communication is started by the main control computer, and the system is switched to work in the satellite communication state.
After waiting for T2 minutes and performing the check, T2 may be a relatively long time, such as 10 minutes and 20 minutes. In the checking process, the satellite communication needs to be closed firstly, so that short communication disconnection can be caused, and the outward normal communication process of the system is influenced. In order to ensure the normal transmission of video data, it is necessary to confirm whether video is being transmitted before checking the communication link, and if so, the detection is not performed temporarily. If not, a check is made.
Similarly, the master controller closes the satellite communication link before checking, which is to check whether 4G communication is possible. Similarly, because the satellite communication signal coverage exists all the time, if the satellite communication link is not closed first, the main control computer detects that the communication network is always smooth, and thus whether the 4G communication can be performed cannot be determined. The detection method is that the main control computer checks whether the system is communicated with the external communication in a PING command mode, if the system is communicated, the 4G communication is proved to be available, and at the moment, the system is switched to enter the 4G communication process. If not, the 4G communication signal is taken as no coverage, the 4G communication cannot be used, and the satellite communication process is returned.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (7)
1. An on-board data communication switching system, comprising: the system comprises an industrial personal computer, a 4G communication transceiver, a satellite communication transceiver, a multi-way switch and a network video recorder;
a first network port of the industrial personal computer is connected with a first signal interface of the 4G communication transceiver; a second network port of the industrial personal computer is connected with a first signal interface of the satellite communication transceiver; the control port of the industrial personal computer is connected with the signal input interface of the multi-way switch; a first network port of the multi-way switch is connected with a second signal interface of the 4G communication transceiver; a second network port of the multi-way switch is connected with a second signal interface of the satellite communication transceiver; a third network port of the multi-way switch is connected with a signal output port of the network video recorder;
the industrial personal computer is used for detecting the communication state of the communication link of the 4G communication transceiver in real time and selecting whether to perform signal interaction with the 4G communication transceiver or perform signal interaction with the satellite communication transceiver according to the communication state of the communication link; the industrial personal computer is also used for generating a selection signal according to the communication state of the communication link; the multi-way switch is used for accessing the network video recorder to a 4G communication network or a satellite communication network according to the selection signal; the communication state of the communication link is the presence of a 4G communication signal.
2. The shipborne data communication switching system of claim 1, wherein the industrial personal computer further comprises a plurality of connection ports; each connecting port is connected with a data source; and the data source is used for carrying out information source data interaction with the industrial personal computer.
3. The on-board data communication switching system of claim 1, wherein the 4G communication transceiver comprises: a 4G antenna;
the 4G antenna is used for converting 4G wireless signals and electric signals.
4. The on-board data communication switching system of claim 1, wherein the satellite communication transceiver comprises: a satellite communication antenna;
the satellite communication antenna is used for converting satellite wireless signals and electric signals.
5. The on-board data communication switching system of claim 1, wherein the multi-way switch comprises: an FPGA and a selection switch;
the FPGA is connected with the selection switch; the FPGA is used for switching the connecting path of the selection switch according to the selection signal.
6. The on-board data communication switching system of claim 5, wherein the selection switch is a single pole double throw switch.
7. The on-board data communication switching system of claim 1, further comprising a plurality of cameras;
the plurality of cameras are connected with the network video recorder; the camera is used to generate video data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021927095.9U CN213073121U (en) | 2020-09-07 | 2020-09-07 | Shipborne data communication switching system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021927095.9U CN213073121U (en) | 2020-09-07 | 2020-09-07 | Shipborne data communication switching system |
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| CN213073121U true CN213073121U (en) | 2021-04-27 |
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| CN202021927095.9U Active CN213073121U (en) | 2020-09-07 | 2020-09-07 | Shipborne data communication switching system |
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