CN111669217B - Commercial ship satellite VSAT information conversion transmission system and method - Google Patents
Commercial ship satellite VSAT information conversion transmission system and method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H—ELECTRICITY
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Abstract
The invention discloses a commercial ship satellite VSAT information conversion and transmission method.A information monitoring unit receives a trigger signal of a user side, transmits pre-sent audio information, and creates an information grade N and an audio type B of the current pre-sent audio information; the information monitoring unit monitors whether the information level N is 1, if so, other information is compressed to occupy the bandwidth, and the audio conversion unit converts the current pre-sent audio information into voice information B1 and video information B2; the information monitoring unit monitors whether the information level N is 2 or not, and if so, the bandwidth occupation ratio of the current pre-sent audio information is increased to more than 60%; the information monitoring unit monitors whether the information level N is 3, if so, the bandwidth occupation ratio of the current pre-sent audio information is distributed to 10-40%; the information monitoring unit monitors whether the information grade N is 4 or not, and if so, the information is transmitted by using the special bandwidth. By distributing information to different levels and configuring corresponding bandwidth, emergency situations can be dealt with in time, and resource distribution is reasonable.
Description
Technical Field
The invention relates to the field of ship satellites, in particular to a commercial ship satellite VSAT information conversion and transmission system and a commercial ship satellite VSAT information conversion and transmission method.
Background
At present, the maritime satellite is a communication satellite for wireless communication between the sea and the land, and is a practical high-tech product integrating global maritime conventional communication, distress and safe communication and special and combat readiness communication. The maritime satellite communication system consists of a maritime satellite, a ground station and a terminal, wherein the current 4 coverage areas are the Pacific, Indian ocean, Atlantic east and Atlantic west areas, can provide the safe communication service in distress within 75 degrees of latitude north and south, and can provide the omnibearing mobile satellite communication service in sea, land and air. The launching of the maritime satellite system greatly improves the communication conditions in the maritime and aviation fields, and plays a great support and guarantee role in meeting special communication requirements such as disaster rescue, emergency communication, exploration and the like on the land, so the development is rapid.
As is known, the bandwidth occupied by the video stream of video surveillance is generally relatively large, and prior art 1 discloses an installation structure of a ship communication satellite antenna, application number CN200920265637.8, and discloses an installation structure of a ship communication satellite antenna, wherein the satellite antenna is fixed on one side of the top of a ship, which is far away from a chimney, and a lamp mast is arranged on the side, which is far away from the chimney, of the top of the ship, and the lamp mast is higher than the satellite antenna on the top of the chimney and is installed on a fixed frame. The satellite antenna is far away from the chimney on the rear side of the upper building, so that the high-temperature smoke discharged by the chimney can be prevented from damaging the satellite antenna, and the influence of the smoke of the chimney on signal transmission of the satellite antenna is avoided. Meanwhile, the satellite antenna fixing frame is higher than the top of the chimney, and the chimney cannot shield the satellite sky receiving and transmitting signals no matter the ship and the satellite are at any angle. The satellite antenna has good signal receiving and transmitting performance, and the satellite telephone has good conversation quality.
The prior art 2 discloses a ship-clustered monitoring system based on mobile communication and satellite positioning, with application number CN201310552549.7, which has an automatic switching function between Beidou satellite and GPRS wireless network communication modes, and utilizes the two communication modes to realize data interaction between a ship-borne terminal and a group monitoring center. The shipborne terminal is installed on the ship body, the power supply subsystem adopts the solar panel to charge the lithium battery and the standby battery, and long-time reliable work of the terminal without external electricity is realized; the GPS information of the ship is stored in real time, and the communication unit is utilized to return the information of the GPS, the alarm, the state of the ship-mounted terminal and the like to the group supervision center; and a software service platform of the supervision center is combined with a GIS system to carry out visual display and unified management on the supervised ship. The invention solves the problems that the communication blind area is reserved in the open sea supervision of common mobile equipment and the equipment can not continuously work for a long time, is suitable for the integrated supervision of ships such as fishing boats and the like, protects the ship for ship transportation and protects the navigation, and improves the fishery administration supervision degree and efficiency.
The following defects exist in the prior art:
1. the method can not meet the requirement of transmission bandwidth allocation of different levels, some things are more urgent, so that large bandwidth needs to be occupied, and other video bandwidths can influence emergencies at the moment, so that the emergencies cannot be dealt with in time.
Different modes are set for the width of the conveying belt in a targeted manner, the conveying belt is in a special operation mode, a traffic interconnection mode and the like, and different bandwidths can be allocated in a targeted manner.
And quick sending can not be finished under emergency, a simple mode is not provided, and a complete information sending mode is still adopted.
Disclosure of Invention
In order to overcome the defects of the prior art, an object of the present invention is to provide a system and a method for converting and transmitting VSAT information of a commercial ship satellite, which can solve the problems of unreasonable resource allocation and insufficient emergency measures.
One of the purposes of the invention is realized by adopting the following technical scheme:
a VSAT information conversion and transmission method for a commercial ship satellite is applied to a VSAT information conversion and transmission system for the commercial ship satellite, the VSAT information conversion and transmission system for the commercial ship satellite comprises an information monitoring unit, an audio conversion unit, a data transmission unit, an antenna turntable, a ring focal antenna and a main station satellite,
the method comprises the following steps: the information monitoring unit receives a trigger signal of a user side, transmits pre-sent audio information, and creates an information grade N and an audio type B of the current pre-sent audio information;
step two: the information monitoring unit monitors whether the information level N is 1, if so, other information is compressed to occupy the bandwidth, the bandwidth occupation ratio of the current pre-sent audio information is increased to be more than 80%, and the audio conversion unit converts the current pre-sent audio information into voice information B1 and video information B2; if not, executing the step four;
step three: the data transmission unit transmits voice information B1 and video information B2 to the master station satellite in sequence;
step four: the information monitoring unit monitors whether the information level N is 2 or not, and if so, the bandwidth occupation ratio of the current pre-sent audio information is increased to more than 60%; if not, executing the step six;
step five: the information monitoring unit detects whether the current bandwidth occupation ratio is larger than 80%, if so, the resolution of the audio conversion unit converting the pre-sent audio information is reduced to form an audio type B3, and the data transmission unit transmits the converted audio information;
step six: the information monitoring unit monitors whether the information level N is 3, if so, the bandwidth occupation ratio of the current pre-sent audio information is distributed to 10% -40%, and if not, the step I is returned;
step seven: the information monitoring unit monitors whether the information grade N is 4 or not, and if so, the information is transmitted by using the special bandwidth.
Further, in the second step, the data delivery unit detects whether the current network speed is less than 30kb, and if the current network speed is less than 30kb, the audio conversion unit converts the current pre-sent audio information into text information B0, voice information B1 and video information B2, and the sending sequence is: b0> B1> B2.
Further, in the fourth step,
the data transmission unit calculates whether S = (K M/N B-64) is larger than 20, if so, normal transmission is carried out; if not, converting the video information into voice information;
the transmission ratio is S, the real-time full-speed bandwidth generated by the data transmission unit is sent at speed K, and the audio type is defined as B.
Further, in the fifth step, the audio conversion unit converts and reduces the resolution of the pre-sent audio information to 704 × 576.
Further, in the sixth step,
the data transmission unit calculates whether S = (K M/N B-64) is larger than 0, if so, normal transmission is carried out; if not, converting the video information into audio B3 with the resolution of 704 x 576;
wherein, the transmission ratio is S, the data transmission unit generates real-time full-speed bandwidth transmission speed is K, the audio type is defined as B, and the audio B3=2 with the resolution of 704 × 576.
Further, in the sixth step, the data delivery unit calculates whether S = (K × M/N × B3-64) is less than 10, and if so, the current information is continuously converted into the voice information B1.
Wherein, the audio type is defined as B, the voice information B1=3, and the audio B3=2 with the resolution of 704 × 576.
Further, when the information level N =1, the data delivery unit configures a code stream upper limit = a bandwidth upper limit.
Further, when the information level N =2, the data transport unit configures the upper limit of the code stream to be 512/kbps.
Further, when the information level N =3, the data transport unit configures the upper limit of the code stream to be 256/kbps.
A VSAT information conversion and transmission system for a commercial ship satellite comprises an information monitoring unit, an audio conversion unit for converting audio types, a data transmission unit, an antenna rotary table, a ring focal antenna and a main station satellite, wherein the information monitoring unit monitors information levels of pre-transmitted information and allocates corresponding bandwidth according to the information levels, the information monitoring unit is respectively interacted with the audio conversion unit and the data transmission unit, and the ring focal antenna is interacted with the main station satellite.
Compared with the prior art, the invention has the beneficial effects that:
1. on one hand, the information is allocated with different grades, and the corresponding bandwidth is configured, so that the emergency can be dealt with in time, and the resource allocation is rationalized; on the other hand, information conversion can be performed in a targeted manner, video and voice modes are exchanged, and voice is followed by video in an emergency, so that the information transmission efficiency can be guaranteed, time can be saved, and more opportunities are provided for precious rescue.
The problem that emergency messages cannot be sent due to the fact that a large amount of bandwidth is occupied in conventional use is avoided, different bandwidths are coordinated according to different information levels, bandwidth configuration is not random or fixed in the prior art, but flexible floating adjustment is achieved, and flexibility is high.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a flow chart of a method for converting and transmitting VSAT information of a commercial vessel according to a preferred embodiment of the present invention;
FIG. 2 is a block diagram of a commercial vessel satellite VSAT information conversion transmission system;
fig. 3 is a block diagram of a commercial vessel satellite VSAT information conversion and transmission system.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-3, a method for transforming and transmitting VSAT information of a commercial ship satellite is applied to a system for transforming and transmitting VSAT information of a commercial ship satellite, the system for transforming and transmitting VSAT information of a commercial ship satellite comprises an information monitoring unit, an audio transformation unit, a data transmission unit, an antenna turntable, a ring focus antenna and a main station satellite,
the method comprises the following steps: the information monitoring unit receives a trigger signal of a user side, transmits pre-sent audio information, and creates an information grade N and an audio type B of the current pre-sent audio information;
step two: the information monitoring unit monitors whether the information level N is 1, if so, other information is compressed to occupy the bandwidth, the bandwidth occupation ratio of the current pre-sent audio information is increased to be more than 80%, and the audio conversion unit converts the current pre-sent audio information into voice information B1 and video information B2; if not, executing the step four; by the method of giving priority to the voice information B1 and giving priority to the video information B2 times, the sending speed of the information can be guaranteed, the level 1 information known by a receiving end can be guaranteed, and the integrity of the information can be guaranteed. And corresponding to N =1, SOS and SOS information is configured.
Step three: the data transmission unit transmits voice information B1 and video information B2 to the master station satellite in sequence; through information conversion, information forms a simple transfer mode, characters are simpler than voice, voice is simpler than video, and in practical application, words in the video can be converted into voice and the voice can be converted into characters.
Step four: the information monitoring unit monitors whether the information level N is 2 or not, and if so, the bandwidth occupation ratio of the current pre-sent audio information is increased to more than 60%; if not, executing the step six; the pre-sent information is interactive information between the leader layers, so that the decision efficiency is ensured, in the existing situation, part of outgoing lines of the video conference exist, the bandwidth is increased by the scheme, the possibility is provided for starting the video conference, meanwhile, the situation that emergency messages cannot be sent due to the fact that a large amount of bandwidth is occupied in the conventional use is avoided, different bandwidths are coordinated according to the difference of information levels, the bandwidth configuration is not random or fixed in the prior art, but is flexibly adjusted in a floating mode, and the flexibility is high.
Step five: the information monitoring unit detects whether the current bandwidth occupation ratio is larger than 80%, if so, the resolution of the audio conversion unit converting the pre-sent audio information is reduced to form an audio type B3, and the data transmission unit transmits the converted audio information;
step six: the information monitoring unit monitors whether the information level N is 3, if so, the bandwidth occupation ratio of the current pre-sent audio information is distributed to 10% -40%, and if not, the step I is returned;
step seven: the information monitoring unit monitors whether the information grade N is 4 or not, and if so, the information is transmitted by using the special bandwidth. The fixed allocation limit of the bandwidth occupied by the conventional information transmission generated by the commercial ship satellite is 10%, and the 10% bandwidth is a special bandwidth which is generally specially used for the conventional information transmission generated by the commercial ship satellite. When the information level N =1, the dedicated bandwidth may be compressed.
Specifically, in practical applications, when the information level N =1, the pre-sent information is urgent information, such as information for asking for help and searching for help, and is specially processed. When the information level N =2, the pre-sent information is interactive information between the leader layers. And when the information level N =3, the pre-sent information is common staff interaction information. Conventional information transfer generated for commercial vessel satellites when the information level N = 4. On one hand, the information is allocated with different grades, and the corresponding bandwidth is configured, so that the emergency can be dealt with in time, and the resource allocation is rationalized; on the other hand, information conversion can be performed in a targeted manner, video and voice modes are exchanged, and voice is followed by video in an emergency, so that the information transmission efficiency can be guaranteed, time can be saved, and more opportunities are provided for precious rescue.
Preferably, in the second step, the data delivery unit detects whether the current network speed is less than 30kb, and if the current network speed is less than 30kb, the audio conversion unit converts the current pre-sent audio information into text information B0, voice information B1 and video information B2, and the sending sequence is: b0> B1> B2.
Preferably, in said step four,
the data transmission unit calculates whether S = (K M/N B-64) is larger than 20, if so, normal transmission is carried out; if not, converting the video information into voice information;
the transmission ratio is S, the real-time full-speed bandwidth generated by the data transmission unit is sent at speed K, and the audio type is defined as B. The significance of calculating S = (K M/N B-64) is in the observation of sending ratio, different limits are further provided for different grades, differences among the grades are further refined, the quantization precision of the bandwidth is improved, and the management and control of the bandwidth are further facilitated.
Preferably, in the fifth step, the audio conversion unit converts and reduces the resolution of the pre-sent audio information to 704 × 576.
Preferably, in the sixth step,
the data transmission unit calculates whether S = (K M/N B-64) is larger than 0, if so, normal transmission is carried out; if not, converting the video information into audio B3 with the resolution of 704 x 576;
wherein, the transmission ratio is S, the data transmission unit generates real-time full-speed bandwidth transmission speed is K, the audio type is defined as B, and the audio B3=2 with the resolution of 704 × 576.
Preferably, in the sixth step, the data delivery unit calculates whether S = (K × M/N × B3-64) is less than 10, and if so, converts the current information into the voice information B1.
Wherein, the audio type is defined as B, the voice information B1=3, and the audio B3=2 with the resolution of 704 × 576. The larger S, the higher the transport ratio, and the higher the efficiency.
Preferably, when the information level N =1, the data delivery unit configures the upper limit of the code stream = the upper limit of the bandwidth. When the information level N =2, the upper limit of the configuration code stream of the data transmission unit is 512/kbps. When the information level N =3, the upper limit of the data transmission unit configuration code stream is 256/kbps. Different grades are configured with different code streams, and the matching degree is high.
A VSAT information conversion and transmission system for a commercial ship satellite comprises an information monitoring unit, an audio conversion unit for converting audio types, a data transmission unit, an antenna rotary table, a ring focal antenna and a main station satellite, wherein the information monitoring unit monitors information levels of pre-transmitted information and allocates corresponding bandwidth according to the information levels, the information monitoring unit is respectively interacted with the audio conversion unit and the data transmission unit, and the ring focal antenna is interacted with the main station satellite. Ingenious design, strong applicability and convenient popularization.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (8)
1. The utility model provides a commercial boats and ships satellite VSAT information conversion transmission method, is applied to commercial boats and ships satellite VSAT information conversion transmission system, commercial boats and ships satellite VSAT information conversion transmission system includes information monitoring unit, audio frequency conversion unit, data transmission unit, antenna revolving stage, ring focus antenna and main website satellite, its characterized in that:
the method comprises the following steps: the information monitoring unit receives a trigger signal of a user side, transmits pre-sent audio information, and creates an information grade N and an audio type B of the current pre-sent audio information;
step two: the information monitoring unit monitors whether the information level N is 1, if so, other information is compressed to occupy the bandwidth, the bandwidth occupation ratio of the current pre-sent audio information is increased to be more than 80%, and the audio conversion unit converts the current pre-sent audio information into voice information B1 and video information B2; if not, executing the step four; the data transmission unit detects whether the current network speed is less than 30kb, if the current network speed is less than 30kb, the audio conversion unit converts the current pre-sent audio information into character information B0, voice information B1 and video information B2, and the sending sequence is as follows: b0> B1> B2;
step three: the data transmission unit transmits voice information B1 and video information B2 to the master station satellite in sequence;
step four: the information monitoring unit monitors whether the information level N is 2 or not, and if so, the bandwidth occupation ratio of the current pre-sent audio information is increased to more than 60%; if not, executing the step six; the data transmission unit calculates whether S = (K M/N B-64) is larger than 20, if so, normal transmission is carried out; if not, converting the video information into voice information; the transmission ratio is S, the real-time full-speed bandwidth generated by the data transmission unit is sent at speed K, the audio type is defined as B, and when the specific B is involved: speech information B1=3, audio B3=2 with a resolution of 704 × 576;
step five: the information monitoring unit detects whether the current bandwidth occupation ratio is larger than 80%, if so, the resolution of the audio conversion unit converting the pre-sent audio information is reduced to form an audio type B3, and the data transmission unit transmits the converted audio information;
step six: the information monitoring unit monitors whether the information level N is 3, if so, the bandwidth occupation ratio of the current pre-sent audio information is distributed to 10% -40%, and if not, the step I is returned;
step seven: the information monitoring unit monitors whether the information grade N is 4, if so, the information is transmitted by using a special bandwidth;
when the information grade N =1, the pre-sent information is urgent information; when the information grade is N =2, the pre-sent information is interactive information among the leader layers; when the information grade N =3, the pre-sent information is common staff interaction information; and when the information level N =4, the pre-sent information is conventional information transfer generated by a commercial ship satellite.
2. The commercial vessel satellite VSAT information conversion transmission method according to claim 1, wherein: in said step five, the audio conversion unit converts and reduces the resolution of the pre-sent audio information to 704 × 576.
3. The commercial vessel satellite VSAT information conversion transmission method according to claim 2, wherein: in the sixth step, the data transmission unit calculates whether S = (K × M/N × B-64) is greater than 0, and if so, normally transmits; if not, converting the video information into audio B3 with the resolution of 704 x 576;
wherein, the transmission ratio is S, the data transmission unit generates real-time full-speed bandwidth transmission speed is K, the audio type is defined as B, and the audio B3=2 with the resolution of 704 × 576.
4. The commercial vessel satellite VSAT information conversion transmission method according to claim 3, wherein: in the sixth step, the data transmission unit calculates whether S = (K × M/N × B3-64) is less than 10, if so, the current information is continuously converted into the voice information B1;
wherein, the audio type is defined as B, the voice information B1=3, and the audio B3=2 with the resolution of 704 × 576.
5. The commercial vessel satellite VSAT information conversion transmission method according to claim 4, wherein: when the information level N =1, the data transfer unit configures the upper limit of the code stream = the upper limit of the bandwidth.
6. The commercial vessel satellite VSAT information conversion transmission method according to claim 4, wherein: when the information level N =2, the upper limit of the configuration code stream of the data transmission unit is 512/kbps.
7. The commercial vessel satellite VSAT information conversion transmission method according to claim 5, wherein: when the information level N =3, the upper limit of the data transmission unit configuration code stream is 256/kbps.
8. A commercial vessel satellite VSAT information conversion transmission system which performs the commercial vessel satellite VSAT information conversion transmission method according to any one of claims 1 to 7, characterized in that: the system comprises an information monitoring unit, an audio conversion unit for converting audio types, a data transmission unit, an antenna turntable, a ring focal antenna and a main station satellite, wherein the information monitoring unit monitors the information grade of pre-sent information and allocates corresponding bandwidth according to the information grade, the information monitoring unit is respectively interacted with the audio conversion unit and the data transmission unit, and the ring focal antenna is interacted with the main station satellite.
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