Research of the Precision Clock Synchronization Based on IEEE 1588

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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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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Distributed Nodes-Based Collaborative Sustaining of Precision Clock Synchronization upon Master Clock Failure in IEEE 1588 System

Sensors ◽

10.3390/s20205784 ◽

2020 ◽

Vol 20 (20) ◽

pp. 5784

Author(s):

Kyou Jung Son ◽

Tae Gyu Chang

Keyword(s):

Clock Synchronization ◽

The Self ◽

Clock Model ◽

Ieee 1588 ◽

Precision Time ◽

Clock Correction ◽

Clock Offset ◽

Reference Clock ◽

Master Clock ◽

Precision Clock

This paper proposes a distributed nodes-based clock synchronization method to sustain sub-microsecond precision synchronization of slave clocks upon master clock failure in IEEE 1588 PTP (precision time protocol) system. The sustaining is achieved by synchronizing the slave clocks to the estimated reference clock which is obtained from the analysis of distributed slave clocks. The proposed method consists of two clock correction functions (i.e., a self-correction and a collaborative correction, respectively). Upon master failure, the self-correction estimates a clock correction value based on the clock model which is constructed during normal PTP operation. The collaborative correction is performed in the preselected management node. The management node estimates a reference clock by collecting and analyzing clock information gathered from the other slave clocks. The performance of the proposed method is simulated by computer to show its usefulness. It is confirmed that the fifty (50) clock model-based collaborative correction maintains 10−6 second PTP accuracy for 10 min prolonged period after the master failure when tested with clock offset variations less than 50 ppm.

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