Time synchronization method

A time synchronization and time technology, applied in the field of communication, can solve the problems of lack of AFDX time synchronization mechanism

Inactive Publication Date: 2014-03-26
BEIJING WATERTEK INFORMATION TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The invention provides a time synchronization method, which

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Embodiment Construction

[0022] The means of time synchronization in the prior art mainly include: 1. Use the local PC to initialize and unify the relative time of the whole system; 2. Directly use the traditional time synchronization technology of IRIG-B.

[0023] Although direct use of IRIG-B can also be used for synchronization, the accuracy of synchronization and the relative error of communication between multiple devices are unacceptable, and the effect of the same frequency is poor.

[0024] In order to solve the above problems, an embodiment of the present invention provides a time synchronization method. Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0025] First, Embodiment 1 of the present invention will be described with reference to the accom...

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Abstract

The invention provides a time synchronization method, relates to the field of communications, and solves the problem that an AFDX (Avionics Full Duplex Switched Ethernet) time synchronization machine is lacked. The time synchronization method comprises the following steps: a transceiving end receives a serial time code adopting the IRIG-B format; the serial time code is used as reference time, and time breakdown is performed to obtain time signals. The time synchronization method adopting the technical scheme is applicable to AFDX, and realizes the time synchronization based on IRIG-B.

Description

technical field [0001] The invention relates to the communication field, in particular to a time synchronization method. Background technique [0002] Avionics Full Duplex Switched Ethernet (AFDX) is a technology implemented by Airbus for certain aircraft data networks (Aircraft Data Networks) according to the ARINC664 specification. At present, it has been widely used to interconnect electronic systems in aviation vehicles, such as engines, flight control components, cruise systems, etc. To date, AFDX has been used in the A380, A400M and Boeing B787 programs. Moreover, the devices based on this protocol are still increasing, so it is necessary to have a very complete test plan to test such devices. In the test, the transmission delay between terminal devices, that is, the transmission delay of the network environment is a very important indicator. [0003] The means of time synchronization in the prior art are mainly initialized by using a local PC, and the relative time...

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Application Information

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IPC IPC(8): H04L7/00
Inventor 万波盖峰王晓炜苗佳旺杨辉杨水华
Owner BEIJING WATERTEK INFORMATION TECH
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