Problems and solutions for refitting a sensor network with IEEE1588 clock synchronisation

A. Puhm, M. Kramer, P. Moosbrugger, M. Horauer
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引用次数: 3

Abstract

Nowadays, multiple sensor nodes are often incorporated into technical solutions forming distributed sensor systems. Herein, advanced detection mechanisms are often realised by using data from multiple sensors in such a network. However, sometimes active sensors - like Time-Of-Flight cameras - interfere with each other. To solve this problem and assist in data correlation, a clock synchronisation method, like IEEE1588, can be adapted. Although, if the sensor nodes have not been developed with this in mind they have to be refitted. An optimal refit of a system is the one that needs the least modifications necessary to achieve the desired goal. This paper lists the impact - in terms of jitter and asymmetry - that different components of a system have on IEEE1588 synchronisation precision and methods to eliminate or alleviate jitter and asymmetry sources in order to enable respective sensor fusion.
用IEEE1588时钟同步改造传感器网络的问题和解决方案
目前,多个传感器节点经常被纳入到分布式传感器系统的技术解决方案中。在这里,先进的检测机制通常是通过使用来自这样一个网络中的多个传感器的数据来实现的。然而,有时主动传感器——比如飞行时间照相机——会相互干扰。为了解决这个问题并协助数据关联,可以采用时钟同步方法,如IEEE1588。但是,如果传感器节点在开发时没有考虑到这一点,则必须对其进行改装。系统的最佳改装是指为达到预期目标所需要的修改最少。本文列出了系统的不同组件对IEEE1588同步精度的影响-就抖动和不对称而言-以及消除或减轻抖动和不对称源的方法,以便实现各自的传感器融合。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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