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Real-time scheduling method of sonar data stream management middleware

A technology of real-time scheduling and data flow, applied in the direction of data exchange network, electrical components, digital transmission system, etc., can solve problems such as unable to send for a long time, not suitable for real-time data, data transmission delay, etc., to ensure controllable real-time performance Effect

Inactive Publication Date: 2013-07-10
SOUTHEAST UNIV
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Problems solved by technology

The disadvantage is that the time delay of network transmission data is random, and data transmission may experience unforeseen delays, or even fail to send for a long time, and cannot provide guarantees for time-related service transmission
Therefore, this method is not suitable for real-time data transmission

Method used

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  • Real-time scheduling method of sonar data stream management middleware
  • Real-time scheduling method of sonar data stream management middleware
  • Real-time scheduling method of sonar data stream management middleware

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Embodiment Construction

[0063] The present invention will be further described below in conjunction with the accompanying drawings.

[0064] A real-time scheduling method for sonar data flow management middleware, based on RTCC, oriented to distributed systems and improved according to the characteristics of sonar data flow, called DAW-RTCC, while retaining RTCC to transmit large amounts of data in real time When it comes to the characteristics of the data, the content of sonar data flow scheduling is added, which mainly includes seven parts of improvement: the improvement of CC election method, the improvement of scheduling table generation method, the improvement of pre-scheduling analysis method, and the improvement of terminal online joining method , The improvement of the importance level adjustment method of the data source at the channel end, the improvement of the dynamic scheduling method and the improvement of the automatic adjustment method of the routing node Link connection failure, the s...

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Abstract

The invention discloses a real-time scheduling method of a sonar data stream management middleware, which faces to a distributed system based on real-time communication control RTCC; and according to the characteristics of sonar data streams, contents aiming at the scheduling of the sonar data streams are added at the time of reserving the characteristic of the RTTC in transmitting large volumes of data in real time. The method is mainly improved in seven parts, namely, an improvement of a central controller (CC), an improvement of a schedule table generation method, an improvement of a pre-scheduling analysis method, an improvement of a terminal online adding method, an improvement of an important-level adjustment method for a channel end data source, an improvement of a dynamic scheduling method and an improvement of an automatic adjustment method for routing node Link linkage faults. The real-time scheduling method provided by the invention is utilized to meet the core requirements for the instantaneity and the openness of the sonar data stream management middleware, realize the openness and the flexible configuration of a system, and provide seamless, expandable and stable scheduling and transmission for different sonar data streams.

Description

technical field [0001] The invention relates to a software sonar system, in particular to a real-time scheduling method of sonar data stream management middleware. Background technique [0002] Due to the large number of array elements in the sonar system, the amount of data that the entire system needs to transmit in real time will be very large under the condition of high-precision sampling. In the sonar system, the data of each array element needs to be free and open to all applications, and the fixed data management mode obviously cannot meet the requirements. Therefore, the core requirements of using sonar real-time data flow management middleware are real-time and openness. On the one hand, openness requires middleware to have a modular structure and corresponding standards and specifications. The key issue is the sonar data flow specification. Define and manage the selection of the exchange mode; on the other hand, real-time performance is mainly reflected in the sch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L12/70H04L12/801
Inventor 罗琳方世良罗昕炜汪磊邓绍庆
Owner SOUTHEAST UNIV
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