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Priority-supported message receiving and sending method in GJB289A bus module

A priority and message technology, applied in bus network, data exchange through path configuration, digital transmission system, etc., can solve the problem of message sending and receiving without priority distinction, affecting the effect of message sending and receiving, etc.

Active Publication Date: 2017-09-15
CHENGDU CHENGDIAN GUANGXIN TECH
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Problems solved by technology

[0002] The bus network GJB289A (MIL-STD-1553B) bus in the field of avionics has been widely used in the field of avionics for many years. There is no priority distinction for sending and receiving, which affects the effect of sending and receiving messages

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  • Priority-supported message receiving and sending method in GJB289A bus module
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  • Priority-supported message receiving and sending method in GJB289A bus module

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Embodiment Construction

[0020] In order to facilitate the description, the English abbreviations appearing in the text are explained:

[0021] MsgID: message ID;

[0022] ICD: Interface Control Document;

[0023] MBI: bus interface module;

[0024] RT: remote terminal;

[0025] BC: bus controller;

[0026] BM: Bus Monitor.

[0027] A GJB289A bus module supporting priority consists of two parts: message sending and message receiving.

[0028] 1 Differentiate the sending buffer management according to the message priority

[0029] Such as figure 1 As shown, when the MBI is used as a BC, the MBI applies for three types of caches, emergency message cache, asynchronous message cache, and common message cache, according to different message sending priorities.

[0030] Urgent message cache stores emergency messages. When an application software sends an emergency message, the message is stored in the emergency message cache. The emergency message has the highest priority. When the emergency message ...

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Abstract

The invention provides a priority-supported message receiving and sending method in a GJB289A bus module. When a bus interface module acts as a BC (Bus Controller), the bus interface module opens up a cache for high-priority messages independently to guarantee that the high-priority messages are sent preferentially. The receiving adopts a second level cache form, and the first level cache adopts the form of receiving a large queue, so that the time sequence of message receiving is ensured. The second level cache adopts the pointer mode, which not only ensures that messages are classified according to different priorities, but also ensures that the message cache does not take up too much memory space; at the same time, the messages of different priorities are received in different ways, high-priority emergency messages adopt an interrupt receiving mode, and ordinary-priority periodic messages are received by using a query mechanism. When a user needs to extract the messages according to the time sequence of receiving the messages, the messages can be extracted from the first level cache, and when the user needs to extract the messages according to the message priority, the messages can be extracted from the second level cache.

Description

technical field [0001] The invention relates to the bus technology, in particular to the message sending and receiving technology in the bus module. Background technique [0002] The bus network GJB289A (MIL-STD-1553B) bus in the field of avionics has been widely used in the field of avionics for many years. There is no priority distinction for sending and receiving, which affects the effect of sending and receiving messages. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method that can support GJB289A bus module to differentiate message priority for receiving and sending. [0004] The technical solution that the present invention adopts for solving the problems of the technologies described above is to support the message sending and receiving method in the GJB289A bus module of priority: [0005] 1) Sending step: the bus interface module MBI puts the messages to be sent into three types of sending buffers...

Claims

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Application Information

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IPC IPC(8): H04L12/40H04L12/865H04L12/863H04L47/6275
CPCH04L12/40143H04L47/6215H04L47/6275H04L2012/4028
Inventor 高翔解军邱昆
Owner CHENGDU CHENGDIAN GUANGXIN TECH
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