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1553 bus functional safety communication method

A technology of functional safety and communication method, applied in the field of functional safety communication of 1553 bus, can solve the problem that the research of 1553 bus safety protocol is still blank and so on

Active Publication Date: 2021-01-08
TIANJIN JINHANG COMP TECH RES INST
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  • Abstract
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Problems solved by technology

[0004] At present, the research on the 1553 bus security protocol is still blank

Method used

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  • 1553 bus functional safety communication method
  • 1553 bus functional safety communication method
  • 1553 bus functional safety communication method

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Embodiment Construction

[0062] 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.

[0063] The functional safety communication method of the 1553 bus provided by the invention can realize the functional safety communication from BC to RT and from RT to BC.

[0064] Such as Figure 1 to Figure 4 As shown, the functional safety communication method from 1553 bus BC to RT includes the following steps:

[0065] S1: BC sends 1553 received command words, specified number of 1553 data words and message data check words to RT;

[0066] Wherein, step S1 specifically includes:

[0067] S101: Perform CRC-16 calculation on the data to be sent;

[0068] S102: Generate a message data check word in the format of 1553 data words from the calculation result of CRC-16;

[0069] S103: Send 1553 receive command words, ...

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Abstract

The invention relates to a functional safety communication method of a 1553 bus and belongs to the technical field of computer communication 1553 buses. According to the functional safety communication method of the 1553 bus disclosed by the invention, fault detection such as status word loss detection and disorder detection is realized through a status word serial number verification function; fault detection such as error number detection and camouflage detection is realized through a message data security verification function; and response timeout fault detection is realized through a response time verification function; and therefore, the functional safety level of the 1553 bus is realized, and the 1553 bus can be especially suitable for being applied to harsh environments.

Description

technical field [0001] The invention belongs to the technical field of computer communication 1553 bus, and in particular relates to a functional safety communication method of 1553 bus. Background technique [0002] At present, the research heat of Ethernet functional safety in industrial Ethernet is high, which is used to ensure the adaptability, reliability and maintainability of Ethernet under the interference of various harsh environments such as electromagnetic, high temperature, humidity, noise and vibration. For example, PROFIsafe security protocol, CIPsafety security protocol and EPAsafety security protocol are all developed for Ethernet. [0003] The physical layer of the 1553 bus adopts Manchester encoding, which is the same as the encoding algorithm adopted by the physical layer of Ethernet (10BASE-T); the basic unit (word) of the logical link layer of the 1553 bus adopts the parity check method, which can only realize single-bit error correction, far weaker The...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40H04L1/00H04L29/06
CPCH04L1/0061H04L12/40006H04L63/12
Inventor 李文健
Owner TIANJIN JINHANG COMP TECH RES INST
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