Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

IEEE 1588-based synchronization system and synchronization method thereof

A technology for synchronizing systems and synchronizing messages, which is applied in the direction of transmission systems, synchronization devices, digital transmission systems, etc., can solve the problems of reducing synchronization accuracy and not considering the machine accuracy of embedded systems, and achieve the effect of high clock synchronization accuracy

Active Publication Date: 2011-06-22
SHANGHAI JIAO TONG UNIV
View PDF6 Cites 42 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the proposed frequency compensation method does not consider the limited machine precision of the embedded system, that is, the impact of the truncation error, when calculating the frequency ratio of the master-slave clock, thereby reducing the final synchronization accuracy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • IEEE 1588-based synchronization system and synchronization method thereof
  • IEEE 1588-based synchronization system and synchronization method thereof
  • IEEE 1588-based synchronization system and synchronization method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0028] This embodiment includes: a master device and a slave device connected through a network, wherein: the master device includes a master clock module and a CPU management control module, and the slave device includes a slave clock module and a CPU management control module.

[0029] The main clock module is composed of a clock timer and a crystal oscillator, wherein: the clock counter realizes the output of the local system time and increases the system time by the value of one clock cycle when triggered, and the crystal oscillator is used to generate the module's work The clock is output to the CPU management...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an IEEE 1588 accurate clock synchronization protocol-based synchronization system and a synchronization method thereof in the technical field of wireless communication. The system consists of master equipment and slave equipment which are connected through a network, wherein the master equipment comprises a main clock module and a central processing unit (CPU) management control module; and the slave equipment comprises a slave clock module and a CPU management control module. Due to the adoption of a frequency compensation clock provided by Balasubramanian and the like, a frequency adjustable clock counter is constructed and the frequency compensation function is realized; and an improved clock synchronization method is adopted, the limited machine precision of anembedded system, namely influence brought by truncation errors is considered; therefore, higher clock synchronization accuracy is achieved.

Description

technical field [0001] The present invention relates to a device and method in the technical field of wireless communication, in particular to a synchronization system and a synchronization method based on the IEEE 1588 precise clock synchronization protocol. Background technique [0002] In recent years, due to its openness, mature technology, high transmission rate, wide application and low price, Ethernet has received more and more attention, and has a tendency to be further applied to industrial sites. However, because its MAC layer protocol adopts CSMA / CD, it has the defect of uncertain queuing delay, which makes it unable to be effectively used in industrial control. The "uncertainty" of response time (that is, poor real-time performance) and the "asynchrony" of each module in the system have become the bottlenecks that hinder the "one network to the end" of Ethernet technology. Among them: Some industrial sites require extremely high clock synchronization accuracy, w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04L7/00H04L12/56H04L29/06H04J3/06
Inventor 许雄熊振华朱向阳盛鑫军
Owner SHANGHAI JIAO TONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com