CN106487880A - A kind of disaster generation area Transmission system based on Big Dipper short message communication - Google Patents
A kind of disaster generation area Transmission system based on Big Dipper short message communication Download PDFInfo
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- CN106487880A CN106487880A CN201610836177.4A CN201610836177A CN106487880A CN 106487880 A CN106487880 A CN 106487880A CN 201610836177 A CN201610836177 A CN 201610836177A CN 106487880 A CN106487880 A CN 106487880A
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- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 238000004891 communication Methods 0.000 title claims abstract description 31
- 230000005540 biological transmission Effects 0.000 title claims abstract description 17
- 238000003860 storage Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 7
- 210000004899 c-terminal region Anatomy 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims description 2
- 238000013144 data compression Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- 210000000554 iris Anatomy 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- H04L67/50—Network services
- H04L67/52—Network services specially adapted for the location of the user terminal
Abstract
A kind of disaster generation area Transmission system based on Big Dipper short message communication, belongs to Beidou communication technical field, the communication mode of the present invention is Beidou satellite communication, and communication range can cover region or the disaster generation area that common communications facility cannot cover；The present invention utilizes 3D generalized information system collection disaster generation area point set, and the storage mode new to the point set data separate of collection is compressed, and data volume nearly have compressed half, has effectively saved Big Dipper transmission bandwidth；The present invention commands machine to carry out network management the Big Dipper by C/S framework, so that in emergency circumstances can make to command machine collaborative work in net in disaster generation etc., effectively make use of existing commander's machine resource, and improve the communication success rate that the Big Dipper commands machine and Big Dipper terminal；The present invention has carried out subpackage and has re-grouped package control for the big disaster region point set of data volume, and this makes the little problem of the disposable transmitted data amount of Big Dipper short message be resolved.
Description
Technical field
The present invention relates to Beidou communication technical field is and in particular to a kind of disaster generation area based on Big Dipper short message passes
Defeated system.
Background technology
Perfect with communication technology, communication network gradually covers whole nation major part region.In the case of communication smoothly,
Various data can pass on destination in time.However, China yet suffers from region that a large amount of generic communication device cannot cover (such as
The natural disaster generation area such as some mountain areas or earthquake, landslide).It is directed to the calamities such as generation earthquake, landslide, forest fire
Evil, participates in the situation that the staff of First Line rescue still suffers from generation secondary disaster near working region and knows nothing.
So, front Workers may work in the case of can not controlling the disaster overall situation, not only reduces rescue efficiency,
More likely miss the opportunity that rescue personnel withdraws so that itself faces safety problem.
On the other hand, Big Dipper short message communication Bandwidth-Constrained, communication success rate is not high.Meanwhile, Big Dipper commander machine leads to
Often with each subsector one be assigned to each subordinate unit, but each independent use the Big Dipper to command machine.Thus bring one
Individual problem, some disaster generation area are generally only a small range, are under the jurisdiction of certain subordinate unit, and other subordinate units
Commander's machine is now but in idle state, causes the waste that the Big Dipper commands machine resource.
Content of the invention
It is an object of the invention to solving above-mentioned technical problem and providing a kind of disaster based on Big Dipper short message communication
Generation area Transmission system, is particularly well-suited to the front rescue works of the disaster generation area that common communications facility cannot cover,
The present invention integrates the commander's machine associated working of the multiple stage Big Dipper in order to lift Big Dipper short message success rate using C/S framework simultaneously.
A kind of disaster generation area Transmission system based on Big Dipper short message, including the Big Dipper commander machine, Big Dipper user terminal,
Big-dipper satellite, C/S network and disaster generation area transmission method.
Big Dipper commander's machine, Big Dipper user terminal are several；
Described Big Dipper commander's machine is Big Dipper command type equipment, in order to monitor Big Dipper position information of user's terminal, and by north
Bucket short message function is communicated with Big Dipper user terminal.Big Dipper commander's machine is fixed usually as command centre position, residing position
Put communication environment good.
Described Big Dipper user terminal is commanded monitored Big Dipper equipment for the Big Dipper, the positional information of real-time positioning oneself,
And report commander's machine, receive the content that the Big Dipper commands machine to send simultaneously.
Described big-dipper satellite is responsible for transmitting the communications between Big Dipper commander's machine and Big Dipper user terminal.
Described C/S network, i.e. user terminal/server framework network, the system utilizes C/S framework that position is geostationary
Commander's machine integrated by the Internet so that a certain Taibei bucket commander's machine disaster occur etc. in particular cases with access to net
The communication function of commander's machine that in network, other clients connect, to lift communication success rate.
The C-terminal of described C/S framework, i.e. client, each client is a Big Dipper commander machine owner or perhaps one
Individual commander's unit, each client of the present invention connects Taibei bucket commander's machine.
The S end of described C/S framework, i.e. server end, server end of the present invention is used for dispatching each client commander's machine
Short message information.
Described disaster generation area transmission method includes：
Step 1, geographic location acquisition of information；
The present invention browses to relevant range using skyline three-dimension GIS system and carries out position selection, and extracts this
The location point string data in region.
Step 2, geographic area spatial data compression；
The longitude and latitude degrees of data of the location point string described in step 1 is compressed, to save Big Dipper short message transmission bandwidth.
Step 3, data upload server；
Send compressing the whole frame of the data completing described in step 2 to server end, unified distribution is responsible for by server end.
Step 4, server data scheduling；
Received server-side, to after the data compressed described in step 3, is issued to all available client ends.
Step 5, client the reception server data subpackage are processed；
Client judges whether packet exceedes Big Dipper short message peak capacity after receiving server data, exceedes
If carry out subpackage process, otherwise whole bag retain.
Step 6, client subpackage processing data command machine to be sent to Big Dipper user terminal by the Big Dipper；
Data after client subpackage process is sent to Big Dipper user terminal after being re-grouped package by Big Dipper host-host protocol.
Step 7, Big Dipper user terminal receive, group is wrapped and shown；
After Big Dipper user terminal receives packet, judge whether it is subpackage, if if etc. complete all points to be received
Bag is simultaneously re-grouped package according to subpackage order, and the data after group bag is shown with generalized information system.
Brief description
Fig. 1 show present system structural representation；
Fig. 2 show geographical position of the present invention point set compressed format schematic diagram；
Fig. 3 show Big Dipper data of the present invention and is transmitted host-host protocol used by short message；
Fig. 4 show present system rear end commander's machine network system workflow diagram；
Fig. 5 is to show present system front end Big Dipper user terminal software workflow figure；
Specific embodiment
Below, in conjunction with example, the substantive distinguishing features of the present invention and advantage are further described, but the present invention not office
It is limited to listed embodiment.
As shown in figure 1, present system is divided into rear end and front end：Rear end is that the shown Big Dipper commands machine network above Fig. 1,
Struggle against the client that commander's machine is connected under a C/S framework by serial ports in every Taibei, and each client is used for equipped with 3D generalized information system
The position point set information of collection selection area, Big Dipper commander's machine network that all clients connect enters line pipe by server end unification
Reason；System front end is Big Dipper user terminal shown in Fig. 1 lower-left, and described every Taibei bucket user terminal connects a portable display eventually
(present invention's is portable notebook computer, can with more convenient other displays carrying eventually in the case of conditions permit at end
End), portable notebook receives the location information of Big Dipper user terminal itself and the position of System Back-end transmission by serial ports
Point set information, and recover after point set information is re-grouped package and show area information.
Below, will be respectively directed to be described in detail in rear end of the present invention and front end.
As shown in figure 4, the workflow of the rear end of Beidou communication system of the present invention is：(1) C-terminal (client under C/S framework
End) disaster generation area is browsed to by the 3D generalized information system as shown in Fig. 1 upper left corner, then irised out with the form of click
Disaster region, extracts the geographical coordinate point set of selected areas.(2) coordinate point set is carried out according to compressed format as shown in Figure 2
Geographical coordinate point set compression (3) is by the coordinate point set data is activation after compressing to S end (server end) as shown in Figure 1.(4) take
Business device end checks that all clients Big Dipper as shown in Figure 1 commands the connection of machine.(5) server send data to all
Connect the client that the Big Dipper commands machine.(6) whether the packet that client inspection receives exceeds predetermined length, if beyond,
Carry out subpackage, otherwise retain former bag data.(7) client according to communication protocol as shown in Figure 3 by the data described in previous step
Bag carries out package, and commands machine to send by the Big Dipper.
As shown in figure 5, the specific workflow of the front end for Beidou communication system of the present invention.
Below, illustrate being directed to geographical position point compressed format as shown in Figure 2.Traditional geographical position point
Form is the form of the top as shown in Figure 2, that is, the coordinate expenditure of each point, minute, second, be described within 0.01 second, each
Individual coordinate longitude accounts for 8 bytes altogether plus latitude.
The present invention changes the storage mode of original longitude and latitude, is changed to storage mode as shown below in Fig. 2, by point set
First coordinate points expenditure, point, 0.01 point, 0.0001 point of this form storage, the data starting to store from second point is this
Point longitude and latitude and the difference of former point longitude and latitude.As Fig. 2 bottom show the storage format of difference：
(1) when point (fen as shown in Figure 2) with former point difference is more than or equal to 0 and less than or equal to 7, difference
High byte highest order store positive and negative flag bit (as Fig. 2 Flag1), high byte latter 7 (as Fig. 2 dfen1) storage point little
The difference of two after several points, low byte highest order (as Fig. 2 Flag2) storage 0 of difference, the low byte 4～6 of difference is (as schemed
2 dfen) represent dividing of difference, the 3rd after the arithmetic point of low byte 0～3 (as Fig. 2 dfen11) representative point of difference
Number；
(2) when point (fen as shown in Figure 2) with former point difference is more than or equal to 8 and less than or equal to 127, difference
High byte highest order store positive and negative flag bit (as Fig. 2 Flag1), high byte latter 7 (as Fig. 2 dfen) storage point difference
Value, low byte highest order (as Fig. 2 Flag2) storage 1 of difference, latter 7 (as Fig. 2 dfen1) storages point of difference low byte
2 significant digits difference.
Claims (3)
1. a kind of disaster generation area Transmission system based on Big Dipper short message it is characterised in that：This system includes Big Dipper commander
Machine, Big Dipper user terminal, big-dipper satellite, C/S network and disaster generation area transmission method；
Big Dipper commander's machine, Big Dipper user terminal are several；
Described Big Dipper commander's machine is Big Dipper command type equipment, in order to monitor Big Dipper position information of user's terminal and short by the Big Dipper
Message function is communicated with Big Dipper user terminal；Big Dipper commander's machine is fixed usually as command centre position, and present position leads to
Letter environment is good；
Described Big Dipper user terminal is commanded monitored Big Dipper equipment for the Big Dipper, the positional information of real-time positioning oneself, and on
Offer commander's machine, receive the content that the Big Dipper commands machine to send simultaneously；
Described big-dipper satellite is responsible for transmitting the communications between Big Dipper commander's machine and Big Dipper user terminal；
Described C/S network, i.e. user terminal/server framework network, the system utilizes C/S framework by geostationary for position commander
Machine integrated by the Internet so that a certain Taibei bucket commander's machine disaster occur etc. in particular cases with access in network
The communication function of commander's machine that other clients connect, to lift communication success rate；
The C-terminal of C/S framework, i.e. client, each client is that a commander is single in other words conj.or perhaps for a Big Dipper commander machine owner
Position, each client of the present invention connects Taibei bucket commander's machine；
The S end of C/S framework, i.e. server end, server end of the present invention is used for dispatching the short message letter that each client commands machine
Breath；
Described disaster generation area transmission method includes：
Step 1, geographic location acquisition of information；
The present invention browses to relevant range using skyline three-dimension GIS system and carries out position selection, and extracts the position in this region
Point sequence number evidence；
Step 2, geographic area spatial data compression；
The longitude and latitude degrees of data of the location point string described in step 1 is compressed, to save Big Dipper short message transmission bandwidth；
Step 3, data upload server；
Send compressing the whole frame of the data completing described in step 2 to server end, unified distribution is responsible for by server end；
Step 4, server data scheduling；
Received server-side, to after the data compressed described in step 3, is issued to all available client ends；
Step 5, client the reception server data subpackage are processed；
Client judges whether packet exceedes Big Dipper short message peak capacity after receiving server data, carries out if exceeding
Subpackage is processed, and otherwise whole bag retains；
Step 6, client subpackage processing data command machine to be sent to Big Dipper user terminal by the Big Dipper；
Data after client subpackage process is sent to Big Dipper user terminal after being re-grouped package by Big Dipper host-host protocol；
Step 7, Big Dipper user terminal receive, group is wrapped and shown；
After Big Dipper user terminal receives packet, judge whether it is subpackage, if if etc. complete all subpackages to be received simultaneously
Re-grouped package according to subpackage order, and the data after group bag is shown with generalized information system.
2. a kind of disaster generation area Transmission system based on Big Dipper short message according to claim 1 it is characterised in that：
The system is divided into rear end and front end：Machine network is commanded for the Big Dipper in rear end, and every Taibei bucket commander's machine connects a C/S frame by serial ports
Client under structure, each client is used for gathering the position point set information of selection area, all clients equipped with 3D generalized information system
Big Dipper commander's machine network that end connects is managed by server end unification；System front end is Big Dipper user terminal, described every
Big Dipper user terminal connects a portable display terminal, and portable notebook receives Big Dipper user terminal itself by serial ports
Location information and the position point set information of System Back-end transmission, and recover after point set information is re-grouped package and show region
Information；
The workflow of the rear end of Beidou communication system is：(1) C-terminal under C/S framework browses to disaster by 3D generalized information system
Generation area, then irises out disaster region with the form of click, extracts the geographical coordinate point set of selected areas；(2) will sit
Punctuate collection carries out geographical coordinate point set compression according to compressed format；(3) by the coordinate point set data is activation after compression to S end；(4)
Server end checks that all clients Big Dipper commands the connection of machine；(5) server sends data to and all connects north
The client of bucket commander's machine；(6) whether the packet that client inspection receives exceeds predetermined length, if beyond carrying out point
Bag, otherwise retains former bag data；(7) packet described in previous step is carried out package according to communication protocol by client, and passes through
Big Dipper commander's machine sends；
The specific workflow of the front end of Beidou communication system；
The form of traditional geographical position point is coordinate expenditure of each point, minute, second, is described within 0.01 second, each
Coordinate longitude accounts for 8 bytes altogether plus latitude；
The system changes the storage mode of original longitude and latitude, be changed to by first coordinate points expenditure of point set, point, 0.01 point,
0.0001 point of this form storage, the data starting to store from second point is the difference of this longitude and latitude and former point longitude and latitude；
(1) when when dividing more than or equal to 0 and being less than or equal to 7, the high byte highest order storage of difference is positive and negative with former point difference
Flag bit, the difference of the 2 significant digits of rear 7 storages point of high byte, the low byte highest order storage 0 of difference, difference
Low byte 4～6 represents dividing of difference, 0～3 number representing the 3rd after the arithmetic point dividing of low byte of difference；
(2) when when dividing more than or equal to 8 and being less than or equal to 127, the high byte highest order of difference just stores with former point difference
Minus flag position, the difference of rear 7 storages point of high byte, the low byte highest order storage 1 of difference, latter 7 of difference low byte
The difference of the 2 significant digits of storage point.
3. a kind of disaster generation area Transmission system based on Big Dipper short message according to claim 1 it is characterised in that：
Portable display terminal is portable notebook computer.
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Cited By (4)
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| CN109061673A (en) * | 2018-06-04 | 2018-12-21 | 中国气象局公共气象服务中心 | Compression method based on Beidou satellite transmission prewarning area data |
| CN109274737A (en) * | 2018-09-13 | 2019-01-25 | 吉林大学 | A kind of In Oil Field Exploration And Development production C/S Technical Architecture system |
| CN109743397A (en) * | 2019-01-11 | 2019-05-10 | 广东省气象公共服务中心(广东气象影视宣传中心) | Marine information early warning system, method and electronic equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109061673A (en) * | 2018-06-04 | 2018-12-21 | 中国气象局公共气象服务中心 | Compression method based on Beidou satellite transmission prewarning area data |
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