CN105430060A - Spaceflight measurement and control data exchange system based on condition constraint publishing-subscribing mode - Google Patents
Spaceflight measurement and control data exchange system based on condition constraint publishing-subscribing mode Download PDFInfo
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- CN105430060A CN105430060A CN201510739214.5A CN201510739214A CN105430060A CN 105430060 A CN105430060 A CN 105430060A CN 201510739214 A CN201510739214 A CN 201510739214A CN 105430060 A CN105430060 A CN 105430060A
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- 238000005259 measurement Methods 0.000 title claims abstract description 44
- 230000005540 biological transmission Effects 0.000 claims abstract description 38
- 238000001914 filtration Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000009432 framing Methods 0.000 claims abstract description 13
- 238000012423 maintenance Methods 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 11
- 230000006870 function Effects 0.000 claims description 7
- 238000007726 management method Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000010845 search algorithm Methods 0.000 description 2
- 238000007630 basic procedure Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013497 data interchange Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/55—Push-based network services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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Abstract
The invention relates to a spaceflight measurement and control data exchange system based on a condition constraint publishing-subscribing mode. The system is characterized by comprising measurement and control application program, data exchange software and the transmission network; the measurement and control application program is measurement and control data processing program in the application level, is used to compute and process measurement data of exterior measurement, remote measurement and remote control, and is disposed in a measurement and control unit server, a work station or an industrial control computer for operation; the data exchange software is disposed between the measurement and control application program and the transmission network to realize framing, transmitting-receiving, subscribing and filtering of the measurement and control data; and the transmission network is a data transmission IP network of the measurement and control system, and realizes the network transmission function of the measurement and control data. The spaceflight measurement and control data exchange system can overcome the problems that in the prior art, a constrain mechanism lacks and the flexibility of data subscription is not sufficient.
Description
Technical field
The present invention relates to space flight measurement and control Data Interchange Technology field, refer to a kind of space flight measurement and control data exchange system based on constraint publish-subscribe model especially, can guarantee that space flight measurement and control data that are a large amount of, multi-source realize transmitting as required, in real time, efficiently between spaceflight TT&C system distribution accumulate system unit.
Background technology
Spaceflight TT&C system is primarily of measurement and control unit compositions such as measurement and control center's subsystem, measurement and control unit subsystem and measuring and controlling equipment subsystems, build based on multi-level topology, presenting with measurement and control center is core, connects the tree-shaped framework form that multiple measurement and control unit and affiliated measuring and controlling equipment are formed.Measurement and control unit completes measuring and control data process and function of exchange, carries out exchanges data each other by measuring and control data switching system, has the features such as data type is many, requirement of real-time is high, commutative relation is complicated.
Existing distribution subscription technology realizes data based on theme subscription and transmits as required, the source of swap data, target and rise time are not retrained, application program can only complete data secondary filter voluntarily, this mode adds the complexity of application program, the whole efficiency of system process is also had an impact, is therefore not suitable for directly applying in space flight measurement and control exchanges data scene.And general distribution subscription technology is cured setting to theme usually, the level between space flight measurement and control data type of being beyond expression and membership, can not realize the fuzzy subscription of space flight measurement and control data, be difficult to the requirement meeting space flight measurement and control data flexible subscription.
Summary of the invention
Technical problem to be solved by this invention provides a kind of space flight measurement and control data exchange system based on constraint publish-subscribe model for above-mentioned prior art, can overcome the problem of tied mechanism shortcoming, subscription data flexibility deficiency in prior art.
The present invention's adopted technical scheme that solves the problem is: a kind of space flight measurement and control data exchange system based on constraint publish-subscribe model, it comprises observing and controlling application program, exchanges data software and transmission network three parts, observing and controlling application program is application layer measuring and control data handling procedure, survey outward for realizing spacecraft, the calculating of telemetry and telecommand type measuring and control data and processing capacity, be deployed in measurement and control unit server, work station or industrial computer and run; Exchanges data Software deployment, between observing and controlling application program and transmission network, realizes the framing of measuring and control data, transmitting-receiving, subscription and filtration treatment function; Transmission network is TT&C system transfer of data IP network, completes the network transmission function of measuring and control data;
Observing and controlling application program is according to the agreement form write message subject of data, information source, the stay of two nights and the information content, submit exchanges data software to, exchanges data software completes data framing according to agreement form, write time stamp information, generate target according to message subject Hash calculation and send address, then send to transmission network; The message subject of subscription data needed for observing and controlling application deployment, information source, the stay of two nights and information time, submit exchanges data software to; Exchanges data software receives measuring and control data from transmission network, and the constraints according to observing and controlling application deployment is filtered measuring and control data, and the measuring and control data meeting constraints is pushed to observing and controlling application program.
Preferably, described exchanges data software sends out module by data framing module, data network, data network receives module, data filtering engine, multistage theme are subscribed to processing module and six, subscription information storehouse part and formed, for complete be distributed in transmission network observing and controlling application program between measuring and control data transmission and distribution.
Preferably, described multistage theme is subscribed to processing module and is provided a kind of theme expression supporting fuzzy matching, comprise: classification laddering subject description method and fuzzy method for subscribing, the laddering subject description method of described classification is namely using measuring and control data first-level class as message subject first field, using measuring and control data secondary classification as message subject second field, the rest may be inferred, until navigate to concrete measuring and control data type; When described fuzzy method for subscribing refers to observing and controlling application subscription data, only need to submit the either field of message subject or multiple field to, the whole measuring and control data types matched with submitted to field can be subscribed to.
Preferably, described data filtering engine provides a kind of Data filtration strategy based on caching technology and corresponding cache maintenance algorithm, utilizes the principle of locality that measuring and control data is received and dispatched, accelerates the filtration matching speed of measuring and control data frame.
Preferably, after in described Data filtration strategy, data filtering engine obtains measuring and control data frame, first querying information of subscription cache pool, judges whether the subscription information of such measuring and control data is stored in buffer memory, if do not existed, then and further querying information of subscription storehouse.
Preferably, described caching technology safeguards buffer memory based on LRU tactical management, the subscription information in the subscription information storehouse that query rate is high in some cycles is used to replace the subscription information of the low subscription information cache pool of query rate, pass through timed maintenance, improve the cache hit rate of subscription information cache pool, reach the object improving data filtering matching speed.
Compared with prior art, the invention has the advantages that:
(1) the present invention supports that the laddering topic of subscription of classification describes, and can realize fuzzy subscription, can meet the requirement of measurement and control unit data flexible subscription.
(2) the invention provides the Data filtration strategy of multiple constraint, realize the accurate propelling movement of measuring and control data, reduce the secondary filter consumption of upper layer application, improve the efficiency that internal system measuring and control data exchanges.
(3) the invention provides a kind of Data filtration strategy based on caching technology and corresponding cache maintenance algorithm, utilize the principle of locality that measuring and control data is received and dispatched, the filtration matching speed of accelerating network Frame.
(4) present invention achieves Full-Distributed System architectural schemes, exchanges data does not rely on third-party server and carries out relaying, ensure that the reliability of the real-time that internal system measuring and control data exchanges and entire system.
Accompanying drawing explanation
Fig. 1 is the block diagram of system of native system;
Fig. 2 is native system composition hierachical decomposition figure;
Fig. 3 is native system measuring and control data transmitting-receiving flow chart;
Fig. 4 is classification laddering subject description method and fuzzy subscription schematic diagram;
Fig. 5 is the Data filtration strategy schematic diagram based on caching technology.
Wherein:
Observing and controlling application program 1, exchanges data software 2, transmission network 3, data framing module 21, data network send out module 22, data network receives module 23, processing module 25, subscription information storehouse 26 subscribed in data filtering engine 24, multistage theme.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment 1, as shown in Figure 1, the embodiment of the present application provides a kind of space flight measurement and control data exchange system based on constraint publish-subscribe model, mainly comprise observing and controlling application program 1, exchanges data software 2 and transmission network 3 three parts, observing and controlling application program 1 is application layer measuring and control data handling procedure, survey outward for realizing spacecraft, remote measurement, the calculating of the type measuring and control data such as remote control and processing capacity, be deployed in measurement and control unit server, work station or industrial computer and run.Exchanges data software 2 is deployed between observing and controlling application program 1 and transmission network 3, realizes the functions such as the framing of measuring and control data, transmitting-receiving, subscription, filtration treatment.Transmission network 3 is TT&C system transfer of data IP network, completes the network transmission function of measuring and control data.
Above-mentioned three parts are according to four step collaborative works such as data transmission, data transmission, data subscription, data receivers.Wherein, data sending step refers to that observing and controlling application program 1 is according to the agreement form write message subject of data, information source, the stay of two nights and the information content, submits exchanges data software 2 to.Data transmission step refers to that exchanges data software 2 completes data framing according to agreement form, and write time stamp information, generates target according to message subject Hash calculation and send address, then send to transmission network 3.Data subscription step refers to that observing and controlling application program 1 configures the message subject, information source, the stay of two nights, information time etc. of required subscription data, submits exchanges data software 2 to.Data reception step refers to that exchanges data software 2 receives measuring and control data from transmission network 3, according to the constraints such as message subject, information source, the stay of two nights, information time that observing and controlling application program 1 configures, measuring and control data is filtered, the measuring and control data meeting constraints is pushed to observing and controlling application program 1.
As shown in Figure 2, exchanges data software 2 is core components of system, send out module 22 by data framing module 21, data network, data network receive module 23, data filtering engine 24, multistage theme subscribe to processing module 25 and 26 6, subscription information storehouse part and form, for complete be distributed in transmission network 3 observing and controlling application program 1 between measuring and control data transmission and distribution.Data framing module 21 sends out measuring and control data for the net receiving observing and controlling application program 1, according to agreement form composition Frame, and write time stamp; Data network sends out module 22 for according to measuring and control data frame information subject information, uses hash algorithm to calculate and generates destination address, measuring and control data frame is sent to transmission network 3; Data network receives module 23 for receiving measuring and control data frame from transmission network 3; Data filtering engine 24 is for obtaining subscription information from subscription information storehouse 26, based on the linear list sequential search algorithm constraints such as filtering information theme, information source, the stay of two nights, information time item by item, the measuring and control data frame meeting constraints is pushed to observing and controlling application program 1, the measuring and control data frame not meeting constraints is abandoned; The subscription data that processing module 25 is submitted to for receiving and process observing and controlling application program 1 subscribed in multistage theme, especially, after carrying out specialization process to the fuzzy subscription data of observing and controlling application program 1 submission, will process the subscription information of generation stored in subscription information storehouse 26; The subscription information that processing module 25 processes generation is subscribed to for storing multistage theme in subscription information storehouse 26.
Figure 3 shows that native system completes data receiver and the data transmission basic procedure of measuring and control data exchange.On the one hand, observing and controlling application program 1 submits accurate subscription data or fuzzy subscription data to exchanges data software 2, exchanges data software 2 is to the process of fuzzy subscription data specialization, generate subscription information and store, exchanges data software receives measuring and control data frame from transmission network 3, filter item by item according to the constraints such as message subject, information source, the stay of two nights, information time of subscription information to measuring and control data frame, the measuring and control data frame meeting constraints is pushed to observing and controlling application program 1.On the other hand, observing and controlling application program 1 submits the measuring and control data frame needing to send to exchanges data software 2, exchanges data software 2 carries out framing process according to agreement form and write time stamp information, then generate destination address according to message subject Hash calculation, finally measuring and control data frame is sent to transmission network 3.
Multistage theme is subscribed to processing module 25 and is provided a kind of theme expression supporting fuzzy matching, i.e. the laddering subject description of classification and fuzzy method for subscribing, comprising: classification laddering subject description method, fuzzy method for subscribing.As shown in Figure 4, message subject is divided into multiple field by classification laddering subject description method, represents the different levels of measuring and control data type respectively, as the first field can refer to telemetry, unit discharging etc.; Second field can divide into satellite telemetering data, airship telemetry, S-band unit discharging, C-band unit discharging etc.; 3rd field can divide into satellite telemetry true form data further, satellite telemetry chooses point data, S-band angle measurement data outward, S-band survey ranging data outward etc., C-band angle measurement data outward, C-band survey ranging data etc. outward, and the rest may be inferred.Classification laddering subject description method supports the fuzzy method for subscribing of measuring and control data, subscriber accurately can subscribe to by submitting to whole fields of message subject to realize measuring and control data, also the fuzzy subscription of measuring and control data can be realized by submitting to the arbitrary fields of message subject, this method realize submit the specialization process of field to, accurately be positioned to all relevant measuring and control data type, thus realize the flexible subscription of measuring and control data.
Embodiment 2
The embodiment of the present application provides a kind of Data filtration strategy based on caching technology, the principle of locality (namely feature is concentrated in the timesharing of measuring and control data type) utilizing measuring and control data to receive and dispatch, and accelerates the filtration matching speed of measuring and control data frame.This Data filtration strategy is compared to linear list sequential search algorithm described in embodiment 1, can obtain higher search performance in the larger situation in subscription information storehouse 26.After data filtering engine 24 obtains measuring and control data frame, as shown in Figure 5, first querying information of subscription cache pool, judges whether the subscription information of such measuring and control data is stored in buffer memory and (namely judges whether buffer memory hits), as miss, then further querying information of subscription storehouse.Caching management module and subscription information cache pool are the submodules of data filtering engine 24, caching management module is based on LRU strategy (LeastRecentlyUsed, LRU) management maintenance buffer memory, uses the subscription information in the subscription information storehouse 26 that query rate is high in some cycles to replace the subscription information of the low subscription information cache pool of query rate.By the timed maintenance of caching management module, improve the cache hit rate of subscription information cache pool, reach the object of the filtration matching speed improving data filtering engine 24.
The cache maintenance arthmetic statement of caching management module is as follows: the definition cache maintenance cycle is T, and in the cache maintenance cycle, the cache hit number of times of subscription information cache pool is C
1, the inquiry times in subscription information storehouse 26 is C
2, then in the cache maintenance cycle, inquiry total degree is C=C
1+ C
2.In definition subscription information cache pool, the query hit number of times of i-th subscription information in T is S
i, then the hit rate of this subscription information in T is A
i=S
i/ C; In definition subscription information storehouse 26, the query hit number of times of jth bar subscription information in T is S
j, then the hit rate of this subscription information in T is A
j=S
j/ C.
Definition current time is t, and the last cache maintenance time is t
0, the buffer memory scale of subscription information cache pool is M, and the subscription information scale in subscription information storehouse 26 is N, then cache maintenance algorithm can formalized description be:
BEGIN
While(t-t
0>T) // be the cycle perform cache maintenance with T
While(i<N) // judge subscription information cache pool one by one
While(j<M) // judge subscription information storehouse 26 one by one
IF[A
i<A
j]{
// subscription information cache pool i-th subscription information exchanges to subscription information storehouse 26
The jth bar subscription information in // subscription information storehouse 26 exchanges to subscription information cache pool
}
}
}
}
END
In addition to the implementation, the present invention also includes other execution modes, the technical scheme that all employing equivalents or equivalent substitute mode are formed, within the protection range that all should fall into the claims in the present invention.
Claims (6)
1. the space flight measurement and control data exchange system based on constraint publish-subscribe model, it is characterized in that it comprises observing and controlling application program, exchanges data software and transmission network three parts, observing and controlling application program is application layer measuring and control data handling procedure, survey outward for realizing spacecraft, the calculating of telemetry and telecommand type measuring and control data and processing capacity, be deployed in measurement and control unit server, work station or industrial computer and run; Exchanges data Software deployment, between observing and controlling application program and transmission network, realizes the framing of measuring and control data, transmitting-receiving, subscription and filtration treatment function; Transmission network is TT&C system transfer of data IP network, completes the network transmission function of measuring and control data;
Observing and controlling application program is according to the agreement form write message subject of data, information source, the stay of two nights and the information content, submit exchanges data software to, exchanges data software completes data framing according to agreement form, write time stamp information, generate target according to message subject Hash calculation and send address, then send to transmission network; The message subject of subscription data needed for observing and controlling application deployment, information source, the stay of two nights and information time, submit exchanges data software to; Exchanges data software receives measuring and control data from transmission network, and the constraints according to observing and controlling application deployment is filtered measuring and control data, and the measuring and control data meeting constraints is pushed to observing and controlling application program.
2. a kind of space flight measurement and control data exchange system based on constraint publish-subscribe model according to claim 1, it is characterized in that: exchanges data software sends out module by data framing module, data network, data network receives module, data filtering engine, multistage theme are subscribed to processing module and six, subscription information storehouse part and formed, for complete be distributed in transmission network observing and controlling application program between measuring and control data transmission and distribution.
3. a kind of space flight measurement and control data exchange system based on constraint publish-subscribe model according to claim 2, it is characterized in that: described multistage theme is subscribed to processing module and provided a kind of theme expression supporting fuzzy matching, comprise: classification laddering subject description method and fuzzy method for subscribing, the laddering subject description method of described classification is namely using measuring and control data first-level class as message subject first field, using measuring and control data secondary classification as message subject second field, the rest may be inferred, until navigate to concrete measuring and control data type; When described fuzzy method for subscribing refers to observing and controlling application subscription data, only need to submit the either field of message subject or multiple field to, the whole measuring and control data types matched with submitted to field can be subscribed to.
4. a kind of space flight measurement and control data exchange system based on constraint publish-subscribe model according to Claims 2 or 3, it is characterized in that: described data filtering engine provides a kind of Data filtration strategy based on caching technology and corresponding cache maintenance algorithm, utilize the principle of locality that measuring and control data is received and dispatched, accelerate the filtration matching speed of measuring and control data frame.
5. the space flight measurement and control data exchange system based on constraint publish-subscribe model according to claim 4, it is characterized in that: after in described Data filtration strategy, data filtering engine obtains measuring and control data frame, first querying information of subscription cache pool, judge whether the subscription information of such measuring and control data is stored in buffer memory, if do not existed, then further querying information of subscription storehouse.
6. the space flight measurement and control data exchange system based on constraint publish-subscribe model according to claim 4, it is characterized in that: described caching technology safeguards buffer memory based on LRU tactical management, the subscription information in the subscription information storehouse that query rate is high in some cycles is used to replace the subscription information of the low subscription information cache pool of query rate, pass through timed maintenance, improve the cache hit rate of subscription information cache pool, reach the object improving data filtering matching speed.
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| CN201510739214.5A CN105430060B (en) | 2015-11-04 | 2015-11-04 | Constraint publish-subscribe model space flight measurement and control data exchange system |
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| CN201510739214.5A CN105430060B (en) | 2015-11-04 | 2015-11-04 | Constraint publish-subscribe model space flight measurement and control data exchange system |
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| CN105430060A true CN105430060A (en) | 2016-03-23 |
| CN105430060B CN105430060B (en) | 2018-06-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107067325A (en) * | 2017-04-18 | 2017-08-18 | 湖南福米信息科技有限责任公司 | Filter method, filter and the supplying system of stock market data |
| CN108155953A (en) * | 2017-11-29 | 2018-06-12 | 北京空间技术研制试验中心 | A kind of spacecraft-testing system |
| CN109921919A (en) * | 2017-12-13 | 2019-06-21 | 航天信息股份有限公司 | Data exchange system and method |
| CN113449234A (en) * | 2021-05-11 | 2021-09-28 | 中国人民解放军63729部队 | Method for multi-stage subscription and release of data |
| CN114337789A (en) * | 2022-01-04 | 2022-04-12 | 上海航天测控通信研究所 | Satellite-borne Ka frequency band high-speed data transmission system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103324520B (en) * | 2013-06-19 | 2016-04-06 | 西北工业大学 | A kind of method for subscribing merging based on condition and share |
| CN104794200B (en) * | 2015-04-21 | 2018-02-09 | ***装备发展部第六十三研究所 | A kind of event distribution subscription method of the support fuzzy matching based on body |
-
2015
- 2015-11-04 CN CN201510739214.5A patent/CN105430060B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107067325A (en) * | 2017-04-18 | 2017-08-18 | 湖南福米信息科技有限责任公司 | Filter method, filter and the supplying system of stock market data |
| CN108155953A (en) * | 2017-11-29 | 2018-06-12 | 北京空间技术研制试验中心 | A kind of spacecraft-testing system |
| CN109921919A (en) * | 2017-12-13 | 2019-06-21 | 航天信息股份有限公司 | Data exchange system and method |
| CN113449234A (en) * | 2021-05-11 | 2021-09-28 | 中国人民解放军63729部队 | Method for multi-stage subscription and release of data |
| CN114337789A (en) * | 2022-01-04 | 2022-04-12 | 上海航天测控通信研究所 | Satellite-borne Ka frequency band high-speed data transmission system |
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| CN105430060B (en) | 2018-06-19 |
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