A06B-6102-H326#H520
從智能傳感器到更高級別的管理系統的連接一直是狀態監測應用的主要挑戰之一。迄今為止,狀態監測應用已根據最終應用要求使用有線或無線連接解決方案。無線連接解決方案在易于部署方面具有優勢,但在帶寬和/或電池壽命方面通常受到限制。有線連接解決方案有時在數據帶寬方面受到限制,并且并不總是支持惡劣工業環境中的長距離連接,并且通常需要單獨的電纜供電。
基于 100BASE-TX/10BASE-T 的現有工業以太網解決方案提供高達 100 Mb 的高數據帶寬,并通過帶 PoE 的 Cat-5 或 Cat-6e 電纜供電,但僅限于 100 米距離,并且不支持危險區域用例,因為它們是高功率解決方案。狀態監測應用需要支持潛在的遠程傳感器,這些傳感器需要長距離的可靠通信,其中傳感器節點位于空間和功率受限的IP66/IP67外殼中,因為它部署在惡劣的工業環境中。這些受限的傳感器節點應用需要低功耗、高數據帶寬的通信解決方案,通過低成本、易于安裝的電纜和傳感器節點上的小型電纜連接器提供電源和數據。
采用單對以太網的新型連接解決方案
IEEE開發的新型單對以太網(SPE)物理層標準提供了新的連接解決方案,用于為狀態監測應用傳達資產運行狀況見解。10BASE-T1L是IEEE于802年3月2019日批準的新的以太網物理層標準(IEEE 7.2019cg-10)。它將通過與現場級資產的無縫以太網連接顯著提高運營效率,從而極大地改變自動化行業。1BASE-T0L解決了迄今為止將以太網的使用限制在現場資產上的挑戰。這些挑戰包括電源、帶寬、布線、距離、數據孤島和本質安全區 10(危險區域)應用。通過解決棕地升級和新綠地安裝的這些挑戰,1BASE-T2L將實現以前不可用的新資產運行狀況洞察,并將其無縫傳達給控制層和云/專用服務器。這些新見解將通過從現場資產到云或專用服務器的融合以太網網絡,為數據分析、運營見解和生產力改進帶來新的可能性(見圖 <>)。
10BASE-T1L 以太網連接的優勢
10BASE-T1L消除了傳統通信連接到控制和管理網絡所需的復雜、耗電網關的需求,并實現了跨信息技術(IT)和運營技術(OT)網絡的融合以太網網絡。這種融合網絡簡化了安裝,簡化了設備更換,并加快了網絡調試和配置。這樣可以加快軟件更新速度,簡化根本原因分析和字段級資產維護。10BASE-T1L物理層與消息傳輸協議(MQTT)相結合,為現場資產提供消息傳遞協議,為低功耗智能傳感器提供低內存占用。MQTT 提供資產運行狀況見解與云或專用服務器的直接連接,用于預測性維護技術的高級數據分析。
要與啟用 10BASE-T1L 的現場資產通信,需要具有集成介質訪問控制 (MAC) 的主機處理器、無源媒體轉換器或具有 10BASE-T1L 端口的交換機。不需要其他軟件、特殊驅動程序或自定義的 TCP/IP 堆棧(請參閱圖 3)。這為10BASE-T1L設備帶來了明顯的優勢:
10BASE-T1L是一種超低功耗物理層技術,可通過高數據帶寬連接解決方案實現超低功耗智能傳感器部署。
與10BASE-T1L連接的智能傳感器可通過網絡訪問,并且可以隨時隨地進行遠程更新。隨著傳感器變得越來越復雜,軟件更新的可能性也在增加。現在可以通過快速以太網連接在實際時間內進行更新。
A06B-6102-H326#H520
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A06B-6102-H326#H520