標題: IEEE 1588 precision time protocol [打印本頁] 作者: jacky002 時間: 2008-9-14 10:34 AM 標題: IEEE 1588 precision time protocol 第一次聽到IEEE 1588 唉 ??? 什麼碗糕? ! U5 z# K! E' t2 v大致了解過後，喔 簡單說就是以前NTP(Netowork Time Protocol)的軟體時間解決方案的延伸加強版。使用硬體的方式將時間的精準度提升到1 ms。不僅可以可以在網通產品用，未來任何消費性產品要跨不同國家區域，就可以透過GPS的模組，自動更新時間的資訊，完全不需人為設定來指定時間。 1 T& K: W9 {4 U" ]' d: `( h5 \ ; N* Z2 _; o. t. G2 E以下是Google一些文件的簡短說明給大家參考: 7 U3 X4 {6 y- h- SThe IEEE 1588 Standard Precision$ ?4 b N( P: S; d5 A4 D) X
Time Protocol (PTP) is being used by industrial automation applications for precise time synchronization (PTS) on Ethernet networks. PTS provides accurate time synchronization for distributed control nodes.) w) {: v$ J( c% b6 s
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The IEEE 1588 precision time protocol handles synchronisation in industrial control systems to within less than a microsecond. This timing includes synchronising local clocks in sensors, actuators, and other terminal devices using the same network that also transports process data. The 1588 clock is used in a sensor in one of two ways. It can generate a timestamp at the moment the data is acquired or used as a mechanism to generate the acquisition trigger. Such precise timing is crucial to real time industrial Ethernet.2 U/ b) O1 J+ ^/ p