Time-Triggered Ethernet and IEEE 1588 Clock Synchronization

This work describes a new methodology for the purpose of remote testing, debugging and maintenance of networked electronic and mechatronic systems which makes use of the IEEE 1588 high-precision clock synchronization protocol. After the underlying concepts of IEEE 1588 are briefly sketched, the paper describes how functionalities like testing, debugging and maintenance can benefit from a network-wide notion of time as provided by the IEEE 1588 standard. An implementation of the IEEE 1588 protocol with support for test, debug and maintenance as well as links to the integration of the proposed concept into existing tools are presented. Further, the proposed approach is discussed under consideration of recent standardization efforts. Finally, a case study from the area of automotive electronics is described.

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The Research of IEEE 1588 Interface Module Based on LXI Instrument

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.846-847.848 ◽

2013 ◽

Vol 846-847 ◽

pp. 848-852

Author(s):

Wang Chun Zhu ◽

Xin Zhang

Keyword(s):

Future Development ◽

Clock Synchronization ◽

Embedded Linux ◽

Ieee 1588 ◽

Accuracy Requirement ◽

Interface Module ◽

Hardware Clock ◽

New Generation

LXI, which is generally recognized as the new generation of instrument bus technology, not only has developed rapidly in the field of test and measurement, but also has a vast potential for future development. At present, the LXI trigger requires the clock synchronization precision to reach a sub microsecond level or even higher one. Therefore, in order to meet this accuracy requirement, a scheme based on the embedded Linux and IEEE 1588 protocol is proposed in this paper on the basis of studying LXI so as to realize high accurate clock synchronization. This scheme acquires hardware timestamp by utilizing PHY chip DP83640 and realizes PTP hardware clock driving based on Linux. A synchronization test with Agilent B LXI trigger box under the current condition is conducted and about 100ns of synchronization precision can be reached when connected with cable directly. The result demonstrates the feasibility of the scheme and that the clock synchronization precision can reach a nanosecond level.

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Design and Implementation of IEEE 1588 High Precision Clock Synchronization Based on GPS Time Service

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.532-533.292 ◽

2012 ◽

Vol 532-533 ◽

pp. 292-296 ◽

Cited By ~ 1

Author(s):

Kang Wang ◽

Yong Hui Hu ◽

Zai Min He ◽

Hong Jiao Ma

Keyword(s):

High Precision ◽

Time Synchronization ◽

Clock Synchronization ◽

Time Service ◽

Ieee 1588 ◽

Design And Implementation ◽

Nanosecond Range ◽

Application Fields ◽

Timing Requirement ◽

Precision Clock

In view of PTP high precise timing requirement for many application fields, GPS time service is provided with the advantages of high precision and high stabilization. The principle and timescale of PTP based on GPS are analyzed and discussed. And then a PTP time synchronization platform with GPS-based UTC time is designed and implemented, the correlative key design flowchart is described as well. Finally, the paper gives the experiment results, which show the time synchronization accuracies can reach nanosecond range.

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