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MIL-1394 network data redundancy method

A network data and redundancy technology, applied in data exchange network, digital transmission system, electrical components, etc., can solve the problem of flight control computer not responding in time, increasing the burden of flight control computer, etc., to improve the efficiency of action response and reduce CPU. load, achieve low-complexity effects

Inactive Publication Date: 2018-06-05
TIANJIN JINHANG COMP TECH RES INST
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  • Abstract
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Problems solved by technology

[0003] The current solution is to identify and process redundant frames by the CPU of the flight control computer. This method increases the burden on the flight control computer and may cause the flight control computer to fail to respond to actions in time.

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  • MIL-1394 network data redundancy method
  • MIL-1394 network data redundancy method

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Embodiment Construction

[0011] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0012] figure 1 Shown is a schematic diagram of the MIL-1394 frame header, such as figure 1 As shown, the frame information consists of MIL-1394 frame header and custom fields. The Channel field is used to indicate the channel number of the frame, the Message ID field is used to indicate the content information of the frame, the Priority field is used to indicate the priority of the frame, the Health Status Word field is used to indicate the health status of the data source node, and the Sequence Number field is the Defined frame redundancy information.

[0013] like figure 2 As shown, the redundant information Hash module processes the Message ID to obtain the frame index, the redundant information RAM processes t...

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Abstract

The invention discloses an MIL-1394 network data redundancy method, which is characterized in that frame information is formed by a MIL-1394 frame header and a user-defined field, a Channel field is used for indicating a channel number of a frame, a Message ID field is used for indicating content information of the frame, a Priority field is used for indicating the priority of the frame, a HealthStatus Word field is used for indicating a health status of a data source node, and a Sequence Number field is user-defined frame redundancy information, and comprises the steps of processing the Message ID to acquire a frame index, processing the frame index to acquire redundancy information, comparing the redundancy information with the frame information, if the Channel field, the Message ID field, the Priority field, the Health Status Word field of the redundancy information are the same as the frame information, and the Sequence Number field of the frame information is different from the Sequence Number of the redundancy information, receiving the frame, and otherwise, discarding the frame.

Description

technical field [0001] The invention relates to network data processing technology, in particular to a MIL-1394 network data redundancy method. Background technique [0002] The MIL-1394 network has the characteristics of high reliability, high certainty, and strong fault tolerance, and is very suitable for data communication between nodes in the flight control system. The flight control system has the characteristics of high safety and high reliability. To ensure the reliability of communication between nodes, three copies of the data need to be transmitted simultaneously. How to solve the data redundancy method of MIL-1394 network has become a key problem in the deployment of MIL-1394 network. [0003] The current solution is to identify and process redundant frames by the CPU of the flight control computer. This method increases the burden on the flight control computer and may make the flight control computer unable to respond to actions in time. Contents of the inve...

Claims

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Application Information

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IPC IPC(8): H04L12/815H04L29/08H04L47/22
CPCH04L47/23H04L67/5651
Inventor 袁中健所玉君崔建飞
Owner TIANJIN JINHANG COMP TECH RES INST
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