CN103166975A - Data distribution service (DDS) communication system - Google Patents
Data distribution service (DDS) communication system Download PDFInfo
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Abstract
The invention discloses a data distribution service (DDS) communication system. The system uses a publishing/subscribing communication mode and comprises a plurality of publishers, a plurality of subscribers, a plurality of middle pieces, a register data type module, a generation topic module, a publishing data module, a seeking topic module, a subscribing topic module and a receiving data module; one publisher firstly calls the register data type module, returns the module after succeeding in calling the module, and then calls the generation topic module to generate a topic on the middle pieces; one subscriber discovers the topic on a network by seeking the topic module, and then calls the subscribing topic module to subscribe the topic; and the publisher calls the publishing data module to send data to the middle pieces when receiving words of subscribing the topic, and the subscriber receives the data on the middle pieces through the receiving data module. The DDS communication system is high in real time performance and very applicable to various radar weapon systems which are high in requirement of real time performances and large in handling capacity.
Description
Technical field
The present invention relates to a kind of communication system, particularly a kind of DDS communication system that is applied in the radar armament systems.
Background technology
In existing radar armament systems, the communication system models that carry out information communication through the Socket protocol stack by Ethernet that adopt more.At first create a Socket; Then need the port numbers of binding IP address and appointed transceiving; Then according to circulation way, socket is set; At last by the read-write operation of assigned address port being realized the transmitting-receiving of message.The shortcoming of the method is integrated flexibility and poor expandability, need to can't realize the separation of software and hardware to formulating the information interface agreement between communication equipment, and system control function dynamic-configuration and restructuring difficulty.
The communication integrate flexibility of radar armament systems and poor expandability need to be to formulating the information interface agreement between communication equipment, and can't realize the separation of software and hardware, make the characteristics of system control function dynamic-configuration and restructuring difficulty.
Summary of the invention
In order to overcome the defective of prior art, the invention provides a kind of DDS communication system, it is characterized in that, it has adopted the publish/subscribe communication pattern, comprise some publishers, some subscribers, some middlewares, the log-on data type block, generate topic module, distributing data module, search topic module, topic of subscription module, receive data module;
At first one publisher calls described log-on data type block, returns after success; Then call described generation topic module, generate theme on middleware; One subscriber finds theme by searching described topic module on network, then call described topic of subscription module and subscribe to this theme; When described publisher receives the topic of subscription word, call described distributing data module, data are delivered on described middleware, described subscriber receives this data by described receive data module on described middleware.
Preferably, described log-on data type block: initialization also creates one first territory participant's entity, defines its territory number and QoS strategy; Create simultaneously one first publishing side, define its QoS, initialization also creates corresponding transport layer;
Generate topic module: create the Data subject of issue, definition theme name, type, and define its QoS;
The distributing data module: first create a data person of writing, definition QoS, the data that then will transmit according to the uniform data type formatization of definition are called the described data person of writing at last, write the data that will transmit;
Search topic module: at first initialization and create one second territory participant's entity, and the domain of definition number and QoS strategy; Then create one second publishing side, definition QoS, initialization also creates corresponding transport layer; Create at last the Data subject of issue, definition theme name, type, and definition QoS;
Topic of subscription module: create the function listener, monitor this communication network;
Receive data module: comprise at first creating the data reader definition QoS; Then according to the uniform data type that defines, the data structure that format will be accepted; Last call back function listener is monitored this communication network, accepts corresponding data.
Preferably, if described subscriber is in the state that disconnects, described middleware will be stored this message, until this subscriber reconnects system, middleware sends the message of storage again.
Preferably, a plurality of subscribers can subscribe to a theme simultaneously.
Preferably, described publisher and subscriber's quantity are variable.
Preferably, it adopts UDP/IP agreement, and the mode that adopts multicast to propagate.
Compared with prior art, beneficial effect of the present invention is as follows:
The invention solves the communication integrate flexibility of radar armament systems and poor expandability, need to be to formulating the information interface agreement between communication equipment, and can't realize the separation of software and hardware, make the characteristics of system control function dynamic-configuration and restructuring difficulty, but make the communication of radar armament systems had real-time, without service bottleneck cross-platform operation, characteristics that extensibility is strong, and can realize that the separation of software and hardware, data acquisition separate with application.
Certainly, implement arbitrary product of the present invention and might not need to reach simultaneously above-described all advantages.
Description of drawings
Fig. 1 is the engineering process schematic diagram of the embodiment of the present invention.
Embodiment
The present invention will be further described with specific embodiment by reference to the accompanying drawings in the below.
Theme of the present invention:
The DDS traffic model is the pattern that the Communication Model of the real-time data distribution standard of data-centered (Data-Centric) has replaced traditional employing to carry out information communication by Ethernet through the Socket protocol stack.The party's ratio juris is: the DDS(Data distributing---Data Distribution Service) adopted the publish/subscribe communication pattern, the publish/subscribe communication pattern is based on data-centered Publish-subscribe (DCPS) model, set up the concept in global data space on each system equipment communication network, a large amount of data sample (subject information) of application program (publisher) issue is given long-range interested access end (subscriber); When subject information satisfied subscriber's demand, both connected, and realized the transmission with the Topic relative data.In the publish/subscribe communication pattern, publisher and subscriber join by Topic relative, and both sides needn't know the other side wherein, also needn't be online simultaneously, realized the multidimensional loose coupling of both sides' times, space and data communication.The invention solves the communication integrate flexibility of radar armament systems and poor expandability, need to be to formulating the information interface agreement between communication equipment, and can't realize the separation of software and hardware, make the characteristics of system control function dynamic-configuration and restructuring difficulty, but make the communication of radar armament systems had real-time, without service bottleneck cross-platform operation, characteristics that extensibility is strong, and can realize that the separation of software and hardware, data acquisition separate with application.
Embodiment
As shown in Figure 1, DDS communication system provided by the invention, it has adopted the publish/subscribe communication pattern, comprise some publishers, some subscribers, some middlewares, the log-on data type block, generate topic module, distributing data module, search topic module, topic of subscription module, receive data module;
At first one publisher calls described log-on data type block, returns after success; Then call described generation topic module, generate theme on middleware; One subscriber finds theme by searching described topic module on network, then call described topic of subscription module and subscribe to this theme; When described publisher receives the topic of subscription word, call described distributing data module, data are delivered on described middleware, described subscriber receives this data by described receive data module on described middleware.
Described log-on data type block: initialization also creates one first territory participant's entity, defines its territory number and QoS strategy; Create simultaneously one first publishing side, define its QoS, initialization also creates corresponding transport layer;
Generate topic module: create the Data subject of issue, definition theme name, type, and define its QoS;
The distributing data module: first create a data person of writing, definition QoS (Quality of Service), the data that then will transmit according to the uniform data type formatization of definition in application program are called the described data person of writing at last, write the data that will transmit;
Search topic module: at first initialization and create one second territory participant's entity, and the domain of definition number and QoS strategy; Then create one second publishing side, definition QoS, initialization also creates corresponding transport layer; Create at last the Data subject of issue, definition theme name, type, and definition QoS;
Topic of subscription module: create the function listener, monitor this communication network;
Receive data module: comprise at first creating the data reader definition QoS; Then in application program according to the definition the uniform data type, the data structure that format will be accepted; Last call back function listener is monitored this communication network, accepts corresponding data.
DDS publisher and subscriber join by Topic relative, and a theme can be subscribed to by a plurality of subscribers, and can dynamically change publisher and subscriber's quantity.DDS is based on the consideration of real-time, and it adopts UDP/IP agreement, and adopts the multicast circulation way, can greatly increase network throughput and transmission real-time.
The invention solves the communication integrate flexibility of radar armament systems and poor expandability, need to be to formulating the information interface agreement between communication equipment, and can't realize the separation of software and hardware, make the characteristics of system control function dynamic-configuration and restructuring difficulty, but make the communication of radar armament systems had real-time, without service bottleneck cross-platform operation, characteristics that extensibility is strong, and can realize that the separation of software and hardware, data acquisition separate with application.But that this invention has is real-time, without advantages such as service bottleneck cross-platform operation, extensibility are strong, separation, the data acquisition that can realize software and hardware separate with application, are highly suitable in requirement of real-time is high, throughput is large all kinds of radar armament systems.
The present invention relates to radar armament systems fields, relate in particular to the new method of radar armament systems communication pattern, the method is the Communication Model of the real-time data distribution standard of a kind of data-centered (Data-Centric), the traffic model that has replaced traditional employing to carry out information communication by Ethernet through the Socket protocol stack.The party's ratio juris is: the DDS(Data distributing---Data Distribution Service) adopted the publish/subscribe communication pattern, the publish/subscribe communication pattern is based on the standby pattern of data-centered new traffic, it has set up the concept in global data space, and a large amount of data sample (subject information) of application program (publisher) issue is given long-range interested access end (subscriber); When subject information satisfied subscriber's demand, both connected, and realized the transmission with the Topic relative data.In the publish/subscribe communication pattern, publisher and subscriber join by Topic relative, and both sides needn't know the other side wherein, also needn't be online simultaneously, realized the multidimensional loose coupling of both sides' times, space and data communication.But that this invention has is real-time, without advantages such as service bottleneck cross-platform operation, extensibility are strong, separation, the data acquisition that can realize software and hardware separate with application, are highly suitable in requirement of real-time is high, throughput is large all kinds of radar armament systems.
The above disclosed preferred embodiment of the present invention just is used for helping to set forth the present invention.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this invention yet and only is described embodiment.Obviously, according to the content of this specification, can make many modifications and variations.These embodiment are chosen and specifically described to this specification, is in order to explain better principle of the present invention and practical application, thereby under making, the technical field technical staff can understand and utilize the present invention well.The present invention only is subjected to the restriction of claims and four corner and equivalent.
Claims (6)
1. DDS communication system, it is characterized in that, it has adopted the publish/subscribe communication pattern, comprises some publishers, some subscribers, some middlewares, log-on data type block, generates topic module, distributing data module, searches topic module, topic of subscription module, receive data module;
Its course of work is: at first a publisher calls described log-on data type block, returns after success; Then call described generation topic module, generate theme on middleware; One subscriber finds theme by searching described topic module on network, then call described topic of subscription module and subscribe to this theme; When described publisher receives topic of subscription, call described distributing data module, data are delivered on described middleware, described subscriber receives this data by described receive data module on described middleware.
2. DDS communication system as claimed in claim 1, is characterized in that,
Described log-on data type block: initialization also creates one first territory participant's entity, defines its territory number and QoS strategy; Create simultaneously one first publishing side, define its QoS, initialization also creates corresponding transport layer;
Generate topic module: create the Data subject of issue, definition theme name, type, and define its QoS;
The distributing data module: first create a data person of writing, definition QoS, the data that then will transmit according to the uniform data type formatization of definition are called the described data person of writing at last, write the data that will transmit;
Search topic module: at first initialization and create one second territory participant's entity, and the domain of definition number and QoS strategy; Then create one second publishing side, definition QoS, initialization also creates corresponding transport layer; Create at last the Data subject of issue, definition theme name, type, and definition QoS;
Topic of subscription module: create the function listener, monitor this communication network;
Receive data module: at first create the data reader, definition QoS; Then according to the uniform data type that defines, the data structure that format will be accepted; Last call back function listener is monitored this communication network, accepts corresponding data.
3. DDS communication system as claimed in claim 2, is characterized in that, if described subscriber is in the state that disconnects, described middleware will be stored this message, until this subscriber reconnects system, described middleware sends the message of storage again.
4. DDS communication system as claimed in claim 2, is characterized in that, a plurality of subscribers can subscribe to a theme simultaneously.
5. DDS communication system as claimed in claim 2, is characterized in that, described publisher and subscriber's quantity is variable.
6. DDS communication system as claimed in claim 1, is characterized in that, it adopts UDP/IP agreement, and the mode that adopts multicast to propagate.
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| CN109412890A (en) * | 2018-10-17 | 2019-03-01 | 哈尔滨工业大学 | Combined Trials platform middleware node state detection method based on DDS |
| CN109783066B (en) * | 2018-11-21 | 2022-04-22 | 南京华讯方舟通信设备有限公司 | Method for realizing data association and processing of DDS internal entity |
| CN109783066A (en) * | 2018-11-21 | 2019-05-21 | 南京华讯方舟通信设备有限公司 | A kind of implementation method of DDS internal entity data correlation and processing |
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| CN109905481A (en) * | 2019-03-08 | 2019-06-18 | 电子科技大学 | A kind of building of the Qos model based on RTI-DDS and the runnability prediction technique of Qos strategy protocol |
| CN111103570B (en) * | 2019-11-04 | 2023-04-28 | 航天南湖电子信息技术股份有限公司 | Radar real-time signal processing application software system |
| CN111103570A (en) * | 2019-11-04 | 2020-05-05 | 航天南湖电子信息技术股份有限公司 | Radar real-time signal processing application software architecture |
| CN111935308A (en) * | 2020-09-17 | 2020-11-13 | 中国人民解放军国防科技大学 | Space-time-frequency resource data subscription and release method and device in space dynamic network |
| CN112929418A (en) * | 2021-01-22 | 2021-06-08 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | Rapid IO high-speed communication method and system based on publish-subscribe |
| CN112929418B (en) * | 2021-01-22 | 2023-03-14 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | Rapid IO high-speed communication method and system based on publish-subscribe |
| CN112929448A (en) * | 2021-03-10 | 2021-06-08 | 奥特酷智能科技(南京)有限公司 | Dynamic scheduling model in DDS-based multipath transmission scene |
| CN113378230A (en) * | 2021-07-05 | 2021-09-10 | 东南大学 | Data access control method of DDS (direct digital synthesizer) distributed system |
| CN114268555A (en) * | 2021-12-27 | 2022-04-01 | 中国电子科技集团公司第十四研究所 | Data management system based on DDS |
| CN114884907A (en) * | 2022-04-19 | 2022-08-09 | 中汽创智科技有限公司 | Communication method, device, system, equipment and medium based on automatic driving |
| CN114884907B (en) * | 2022-04-19 | 2023-07-25 | 中汽创智科技有限公司 | Communication method, device, system, equipment and medium based on automatic driving |
| CN115150454A (en) * | 2022-06-30 | 2022-10-04 | 电子科技大学 | Cross-operating-system centralized publishing and subscribing communication middleware |
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Application publication date: 20130619 |