A06B-6102-H326#H520
從智能傳感器到更高級(jí)別的管理系統(tǒng)的連接一直是狀態(tài)監(jiān)測(cè)應(yīng)用的主要挑戰(zhàn)之一。迄今為止，狀態(tài)監(jiān)測(cè)應(yīng)用已根據(jù)最終應(yīng)用要求使用有線或無(wú)線連接解決方案。無(wú)線連接解決方案在易于部署方面具有優(yōu)勢(shì)，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(shí)在數(shù)據(jù)帶寬方面受到限制，并且并不總是支持惡劣工業(yè)環(huán)境中的長(zhǎng)距離連接，并且通常需要單獨(dú)的電纜供電。
基于 100BASE-TX/10BASE-T 的現(xiàn)有工業(yè)以太網(wǎng)解決方案提供高達(dá) 100 Mb 的高數(shù)據(jù)帶寬，并通過(guò)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(xiǎn)區(qū)域用例，因?yàn)樗鼈兪歉吖β式鉀Q方案。狀態(tài)監(jiān)測(cè)應(yīng)用需要支持潛在的遠(yuǎn)程傳感器，這些傳感器需要長(zhǎng)距離的可靠通信，其中傳感器節(jié)點(diǎn)位于空間和功率受限的IP66/IP67外殼中，因?yàn)樗渴鹪趷毫拥墓I(yè)環(huán)境中。這些受限的傳感器節(jié)點(diǎn)應(yīng)用需要低功耗、高數(shù)據(jù)帶寬的通信解決方案，通過(guò)低成本、易于安裝的電纜和傳感器節(jié)點(diǎn)上的小型電纜連接器提供電源和數(shù)據(jù)。
采用單對(duì)以太網(wǎng)的新型連接解決方案
IEEE開(kāi)發(fā)的新型單對(duì)以太網(wǎng)（SPE）物理層標(biāo)準(zhǔn)提供了新的連接解決方案，用于為狀態(tài)監(jiān)測(cè)應(yīng)用傳達(dá)資產(chǎn)運(yùn)行狀況見(jiàn)解。10BASE-T1L是IEEE于802年3月2019日批準(zhǔn)的新的以太網(wǎng)物理層標(biāo)準(zhǔn)（IEEE 7.2019cg-10）。它將通過(guò)與現(xiàn)場(chǎng)級(jí)資產(chǎn)的無(wú)縫以太網(wǎng)連接顯著提高運(yùn)營(yíng)效率，從而極大地改變自動(dòng)化行業(yè)。1BASE-T0L解決了迄今為止將以太網(wǎng)的使用限制在現(xiàn)場(chǎng)資產(chǎn)上的挑戰(zhàn)。這些挑戰(zhàn)包括電源、帶寬、布線、距離、數(shù)據(jù)孤島和本質(zhì)安全區(qū) 10（危險(xiǎn)區(qū)域）應(yīng)用。通過(guò)解決棕地升級(jí)和新綠地安裝的這些挑戰(zhàn)，1BASE-T2L將實(shí)現(xiàn)以前不可用的新資產(chǎn)運(yùn)行狀況洞察，并將其無(wú)縫傳達(dá)給控制層和云/專用服務(wù)器。這些新見(jiàn)解將通過(guò)從現(xiàn)場(chǎng)資產(chǎn)到云或?qū)Ｓ梅⻊?wù)器的融合以太網(wǎng)網(wǎng)絡(luò)，為數(shù)據(jù)分析、運(yùn)營(yíng)見(jiàn)解和生產(chǎn)力改進(jìn)帶來(lái)新的可能性（見(jiàn)圖 <>）。
10BASE-T1L 以太網(wǎng)連接的優(yōu)勢(shì)
10BASE-T1L消除了傳統(tǒng)通信連接到控制和管理網(wǎng)絡(luò)所需的復(fù)雜、耗電網(wǎng)關(guān)的需求，并實(shí)現(xiàn)了跨信息技術(shù)（IT）和運(yùn)營(yíng)技術(shù)（OT）網(wǎng)絡(luò)的融合以太網(wǎng)網(wǎng)絡(luò)。這種融合網(wǎng)絡(luò)簡(jiǎn)化了安裝，簡(jiǎn)化了設(shè)備更換，并加快了網(wǎng)絡(luò)調(diào)試和配置。這樣可以加快軟件更新速度，簡(jiǎn)化根本原因分析和字段級(jí)資產(chǎn)維護(hù)。10BASE-T1L物理層與消息傳輸協(xié)議（MQTT）相結(jié)合，為現(xiàn)場(chǎng)資產(chǎn)提供消息傳遞協(xié)議，為低功耗智能傳感器提供低內(nèi)存占用。MQTT 提供資產(chǎn)運(yùn)行狀況見(jiàn)解與云或?qū)Ｓ梅⻊?wù)器的直接連接，用于預(yù)測(cè)性維護(hù)技術(shù)的高級(jí)數(shù)據(jù)分析。
要與啟用 10BASE-T1L 的現(xiàn)場(chǎng)資產(chǎn)通信，需要具有集成介質(zhì)訪問(wèn)控制 （MAC） 的主機(jī)處理器、無(wú)源媒體轉(zhuǎn)換器或具有 10BASE-T1L 端口的交換機(jī)。不需要其他軟件、特殊驅(qū)動(dòng)程序或自定義的 TCP/IP 堆棧（請(qǐng)參閱圖 3）。這為10BASE-T1L設(shè)備帶來(lái)了明顯的優(yōu)勢(shì)：
10BASE-T1L是一種超低功耗物理層技術(shù)，可通過(guò)高數(shù)據(jù)帶寬連接解決方案實(shí)現(xiàn)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(guò)網(wǎng)絡(luò)訪問(wèn)，并且可以隨時(shí)隨地進(jìn)行遠(yuǎn)程更新。隨著傳感器變得越來(lái)越復(fù)雜，軟件更新的可能性也在增加。現(xiàn)在可以通過(guò)快速以太網(wǎng)連接在實(shí)際時(shí)間內(nèi)進(jìn)行更新。
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