CN204408357U - Based on the reliable data transmission system of big-dipper satellite - Google Patents
Based on the reliable data transmission system of big-dipper satellite Download PDFInfo
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- CN204408357U CN204408357U CN201420753342.6U CN201420753342U CN204408357U CN 204408357 U CN204408357 U CN 204408357U CN 201420753342 U CN201420753342 U CN 201420753342U CN 204408357 U CN204408357 U CN 204408357U
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Abstract
The utility model discloses a kind of reliable data transmission system based on big-dipper satellite, this system is made up of commander's machine and multiple terminating machine, terminating machine is made up of data transmission command maincenter, data sink, data encoder, data transmitter four part, and described data sink, data encoder, data transmitter are connected to data transmission command maincenter; Described commander's machine is made up of data transmission command maincenter, reception monitor, data sink, data processor, state storage unit, Bale No. timed sending device six part, and reception monitor, data sink, data processor, state storage unit, Bale No. timed sending device are connected to transmission commander maincenter.The communication transfer frequency based on big-dipper satellite is low, and repeatedly shake hands to realize transmitting abnormal difficult, the utility model can realize reliable data transmission under this severe communication condition.
Description
Technical field
Native system relates to a kind of satellite-based reliable data transmission system, is espespecially carried out the system of reliable data transmission by civilian big-dipper satellite.
Background technology
Current, terminal can be realized to the transfer of data of terminal and broadcast based on big-dipper satellite, but in its communication process, the data transfer interval time is long, general 30 seconds or 1 minute can communication once.
As can be seen from this feature, satellite-based communication is wasted time and energy, efficiency is low especially, often be difficult to realize transmitting in commander's machine+such communication of multiple terminating machine, terminal data sends, after commander's machine receives, reply one by one again, stand-by period far super expection in its Recovery Process, especially when terminal equipment is too much, send one time 1 minute, also with regard to tens bytes, wait for that return information is exactly often several hours, therefore, existing based in the communication of big-dipper satellite, these systems often just send by all means, no matter feed back, it is insecure transmission, terminal and commander's machine all cannot know whether data are accurately received by the other side.
As can be seen here, designing a kind of is current urgent problem based on the reliable data transmission system of big-dipper satellite.
Utility model content
The purpose of this utility model is to provide a kind of satellite-based reliable data transmission system, this system is made up of commander's machine and multiple terminating machine, in transmitting procedure, each terminating machine carries out point packet number to data and sends, after commander's machine receives packet, parse terminal number and packet numbers, in a broadcast manner the Bale No. of the latest data bag received is informed all terminating machines, terminating machine can determine whether commander's machine has received the data oneself reported according to this, and then determine it is the packet sending out new, still original packet is retransmitted, thus achieve the transmitting of data.
To achieve these goals, the utility model have employed following technical scheme:
1, as shown in Figure 1, this system is made up of commander's machine and multiple terminating machine, and terminating machine is responsible for sending data, and commander's machine is responsible for receiving data, and the communication of commander's machine and terminal is assisted by big-dipper satellite.
2, as shown in Figure 2, terminating machine is made up of data transmission command maincenter, data sink, data encoder, data transmitter four part, and data sink, data encoder, data transmitter are connected to data transmission command maincenter.
In terminating machine, the function of data transmission command maincenter is: be responsible for four most of collaborative works, and be responsible for data subpackage to pass to encoder, and safeguard a current data Bale No., after often successfully sending a packet, current data Bale No. adds one.
In terminating machine, the function of data encoder is: be responsible for data encoding to be organized into packet one by one, for reported data, also will have terminal number, current data Bale No., the length of current data packet, CRC check in this packet.Data encoder, by after data encoding, can pass to data transmitter.
In terminating machine, the function of data transmitter is: send the data to big-dipper satellite, by Beidou satellite communication frequency limitation.Preferably, terminating machine sent a packet every 1 minute.
In terminating machine, the function of data sink is: receive the data from commander's machine, the Bale No. of its latest data bag received having terminating machine to send in these data, this Bale No. is not for a terminating machine, but for multiple terminating machine, data sink therefrom can parse the packet numbers that this terminating machine finally sends, if the packet numbers received is consistent with the current data Bale No. that this terminating machine is safeguarded, illustrate that commander's machine successfully have received the packet of this transmission, terminating machine can carry out the transmission of next packet, if ultra-long time does not receive current Bale No., terminating machine can retransmit last packet.
3, as shown in Figure 3, commander's machine is made up of data transmission command maincenter, reception monitor, data sink, data processor, state storage unit, Bale No. timed sending device six part, and reception monitor, data sink, data processor, state storage unit, Bale No. timed sending device are connected to transmission commander maincenter.
Data transmission command maincenter is responsible for each several part collaborative work.
Receive monitor to be responsible for monitoring each terminating machine, if data sent by terminating machine, monitor will be done to receive process, the reception of the not responsible data of monitor itself by log-on data receiver.
Data sink has a data receipt unit and a data resolution unit, receiving element gives resolution unit after receiving data, resolution unit therefrom parses terminal number and packet numbers, after terminal number and packet numbers are sent into state storage unit, then data processing unit is handed over to process the packet in packet.
The function receiving monitor is: be responsible for monitoring each terminating machine, if data sent by terminating machine, monitor will be done to receive process, the reception of the not responsible data of monitor itself by log-on data receiver.
The function of the data receipt unit in commander's machine data receiver is: perform the data receiver task initiated from data receiver monitor;
The function of the Data Analysis unit in commander's machine data receiver is: resolve the data passed over from data receipt unit;
In commander's machine, the function of state storage unit is: numbering and the packet Bale No. of preserving the terminating machine passed over from Data Analysis unit.
State storage unit store each terminal final data bag Bale No., whether have new data to arrive mark, often have new data to arrive, status indication all can be set to true state, and after Bale No. issues, this mark will be set to false; The Bale No. of terminal final data is stored in one group of group key-value pair, and key is exactly terminal number, value is exactly Bale No..
The function of Bale No. timed sending device is: the status indication in timing pan memory cell, new data are had just to start Bale No. transmission flow, the packet Bale No. finally reported by each terminating machine, terminal number are organized into a packet, send to all terminating machines in a broadcast manner.Preferably, machine of commanding sends a Bale No. in every 30 seconds.
Data processor belongs to Service Processing Module in the present system, and how it carrys out deal with data, belongs to and uses the operation system of native system to determine.
The utility model has the advantages that:
Commander's machine and the pairing of multiple terminals machine use, terminal number and packet numbers are sent to commander's machine when sending data by terminating machine in the lump, packet numbers is safeguarded by each terminating machine and is constantly increased progressively, commander's machine sends the packet numbers finally received in a broadcast manner, terminating machine is confirmed whether to send successfully by the Bale No. received, thus achieves the reliable data transmission based on big-dipper satellite.
Accompanying drawing explanation
Fig. 1 commands machine, terminal, Beidou satellite communication schematic diagram.
Fig. 2 terminating machine composition frame chart.
Fig. 3 commands machine composition frame chart.
Embodiment
As shown in Figure 1, the utility model is made up of commander's machine and multiple terminating machine, and terminating machine is responsible for sending data, and commander's machine is responsible for receiving data, and the communication of commander's machine and terminal is assisted by big-dipper satellite.Normally, terminating machine may be arranged on field, even drifts about at sea, as long as can in the place that big-dipper satellite can have access to; Commander's machine generally fixedly mounts machine room.
As shown in Figure 2, terminating machine is made up of data transmission command maincenter, data sink, data encoder, data transmitter four part.
As shown in Figure 3, commander's machine is made up of data transmission command maincenter, reception monitor, data sink, data processor, state storage unit, Bale No. timed sending device six part.
As shown in table 1, in actual use, terminal to report packet, commander's group of planes send out the data format of packet, and all follow unified standard, packet divides three parts, wherein front 2 bytes are packet header, centre is data field, and store the data that will transmit, last 1 byte is CRC check, packet header first character joint is data type, and second, packet header byte is the data length of data field.
As shown in table 2, in actual use, to terminal to report data, packet header first character joint, i.e. data type, is fixed as 0, the standard of data field is as follows: data field first character joint deposits terminal number, and the Bale No. of second byte store data bag, byte below deposits the data that will report.Packet numbers is between 0-255, and Bale No. is that terminating machine commander maincenter is responsible for safeguarding, terminating machine often successfully sends a packet, and packet numbers just adds 1, and terminating machine continues to send next packet; Send unsuccessful or ultra-long time and do not receive reply, Bale No. does not add 1, and retransmits a packet.
As shown in table 3, in actual use, for the data that commander's machine sends, packet header first byte, i.e. data type, is fixed as 1, the standard of data field is as follows: data field the 1st byte deposits the Bale No. receiving No. 1 terminal final data, data field the 2nd byte deposits the Bale No. receiving No. 2 terminal final datas, and class 20 pushes away successively, and data field n-th byte deposits the Bale No. receiving n terminal final data.
Terminal data transmitter is responsible for sending the data to big-dipper satellite, and by Beidou satellite communication frequency limitation, preferably, terminating machine sent a packet every 1 minute.
Terminal data receiver is responsible for receiving the data from commander's machine, one of these data are the Bale No.s that terminal sends final data bag, this Bale No. is not for a terminating machine, but for whole terminating machine, receiver therefrom parses the packet numbers that this terminating machine finally sends, if the packet numbers received is consistent with the current data Bale No. that this terminating machine is safeguarded, illustrate that commander's machine successfully have received the packet of this transmission.
The data sink of commander's machine has a data receipt unit and a data resolution unit, receiving element gives resolution unit after receiving data, resolution unit therefrom parses terminal number and packet numbers, after terminal number and packet numbers are sent into state storage unit, then data processing unit is handed over to process the packet in packet.
In commander's machine data receiver, the function of data receipt unit is: perform the data receiver task initiated from data receiver monitor;
In commander's machine data receiver, the function of Data Analysis unit is: resolve the data passed over from data receipt unit;
In commander's machine, the function of state storage unit is: numbering and the packet Bale No. of preserving the terminating machine passed over from Data Analysis unit.
The state storage unit of commander's machine store each terminal final data bag Bale No., whether have new data to arrive mark, often have new data to arrive, status indication all can be set to true state, and after Bale No. issues, this mark will be set to false; The packet number of terminal final data is stored in one group of group key-value pair, and key is exactly terminal number, value is exactly Bale No..
In commander's machine, the function of Bale No. timed sending device is: the status indication in timing pan memory cell, new data are had just to start Bale No. transmission flow, the packet Bale No. finally reported by each terminating machine, terminal number are organized into a packet, send to all terminating machines.Preferably, machine of commanding sends a Bale No. in every 30 seconds.
The utility model has the advantages that:
Commander's machine and the pairing of multiple terminals machine use, terminal number and packet numbers are sent to commander's machine when sending data by terminating machine in the lump, packet numbers is safeguarded by each terminating machine and is constantly increased progressively, commander's machine sends the Bale No. of the latest data bag received in a broadcast manner, achieve the reliable data transmission based on big-dipper satellite, and do not reduce communication efficiency.
The above know-why being preferred embodiment of the present utility model and using; for a person skilled in the art; when not deviating from spirit and scope of the present utility model; any based on apparent changes such as the equivalent transformation on technical solutions of the utility model basis, simple replacements, all belong within the utility model protection range.
Subordinate list explanation
Table 1 up-downgoing data format.
Table 2 terminal to report data format.
Machine feedback packet number form commanded by table 3.
Table 1
Table 2
Table 3
Claims (7)
1. based on the reliable data transmission system of big-dipper satellite, this system is made up of commander's machine and multiple terminating machine: terminating machine is made up of data transmission command maincenter, data sink, data encoder, data transmitter four part, and data sink, data encoder, data transmitter are connected to data transmission command maincenter; Commander's machine is made up of data transmission command maincenter, reception monitor, data sink, data processor, state storage unit, Bale No. timed sending device six part, and reception monitor, data sink, data processor, state storage unit, Bale No. timed sending device are connected to transmission commander maincenter.
2., as claimed in claim 1 based on the reliable data transmission system of big-dipper satellite, it is characterized in that:
Data sink in commander's machine comprises a data receipt unit and a data resolution unit.
3., as claimed in claim 2 based on the reliable data transmission system of big-dipper satellite, it is characterized in that:
In commander's machine data receiver, the function of data receipt unit is: perform the data receiver task initiated from data receiver monitor.
4., as claimed in claim 2 based on the reliable data transmission system of big-dipper satellite, it is characterized in that:
In commander's machine data receiver, the function of Data Analysis unit is: resolve the data passed over from data receipt unit.
5., as claimed in claim 1 based on the reliable data transmission system of big-dipper satellite, it is characterized in that:
In commander's machine, the function of state storage unit is: numbering and the packet Bale No. of preserving the terminating machine passed over from Data Analysis unit.
6., as claimed in claim 1 based on the reliable data transmission system of big-dipper satellite, it is characterized in that:
In commander's machine, the function of data processor is: the core data that process resolution unit passes over.
7., as claimed in claim 1 based on the reliable data transmission system of big-dipper satellite, it is characterized in that:
The function of the Bale No. timed sending device of commander's machine is: at set intervals will from state storage unit reads status data, send to all terminating machines in a broadcast manner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420753342.6U CN204408357U (en) | 2014-12-05 | 2014-12-05 | Based on the reliable data transmission system of big-dipper satellite |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880760A (en) * | 2018-06-14 | 2018-11-23 | 中国电子科技集团公司第五十四研究所 | A kind of big data quantity reliable communication method based on big-dipper satellite |
| CN109450517A (en) * | 2018-08-10 | 2019-03-08 | 泰斗微电子科技有限公司 | RDSS communications control method and system |
| CN113747377A (en) * | 2020-05-29 | 2021-12-03 | 上海瀛联信息科技股份有限公司 | Big dipper command system of big data file is sent in coordination |
-
2014
- 2014-12-05 CN CN201420753342.6U patent/CN204408357U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880760A (en) * | 2018-06-14 | 2018-11-23 | 中国电子科技集团公司第五十四研究所 | A kind of big data quantity reliable communication method based on big-dipper satellite |
| CN108880760B (en) * | 2018-06-14 | 2021-06-08 | 中国电子科技集团公司第五十四研究所 | Big data volume reliable communication method based on Beidou satellite |
| CN109450517A (en) * | 2018-08-10 | 2019-03-08 | 泰斗微电子科技有限公司 | RDSS communications control method and system |
| CN109450517B (en) * | 2018-08-10 | 2021-11-16 | 泰斗微电子科技有限公司 | RDSS communication transmission control method and system |
| CN113747377A (en) * | 2020-05-29 | 2021-12-03 | 上海瀛联信息科技股份有限公司 | Big dipper command system of big data file is sent in coordination |
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