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邊緣計(jì)算 我有新說(shuō)法
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  邊緣計(jì)算是指在靠近物或數(shù)據(jù)源頭的一側(cè),采用網(wǎng)絡(luò)、計(jì)算、存儲(chǔ)、應(yīng)用核心能力為一體的開(kāi)放平臺(tái),就近提供近端服務(wù)。其應(yīng)用程序在邊緣側(cè)發(fā)起,產(chǎn)生更快的網(wǎng)絡(luò)服務(wù)響應(yīng),滿足行業(yè)在實(shí)時(shí)業(yè)務(wù)、應(yīng)用智能、安全與隱私保護(hù)等方面的基本需求。邊緣計(jì)算處于物理實(shí)體和工業(yè)連接之間,或處于物理實(shí)體的頂端。而云端計(jì)算,仍然可以訪問(wèn)邊緣計(jì)算的歷史數(shù)據(jù)。

1從分布式數(shù)計(jì)算開(kāi)始 

  邊緣計(jì)算并非是一個(gè)新鮮詞。作為一家內(nèi)容分發(fā)網(wǎng)絡(luò)CDN和云服務(wù)的提供商AKAMAI,早在2003年就與IBM合作“邊緣計(jì)算”。作為世界上大的分布式計(jì)算服務(wù)商之一,當(dāng)時(shí)它承擔(dān)了全球15-30%的網(wǎng)絡(luò)流量。在其一份內(nèi)部研究項(xiàng)目中即提出“邊緣計(jì)算”的目的和解決問(wèn)題,并通過(guò)AKAMAI與IBM在其WebSphere上提供基于邊緣Edge的服務(wù)。
 

  對(duì)物聯(lián)網(wǎng)而言,邊緣計(jì)算技術(shù)取得突破,意味著許多控制將通過(guò)本地設(shè)備實(shí)現(xiàn)而無(wú)需交由云端,處理過(guò)程將在本地邊緣計(jì)算層完成。這無(wú)疑將大大提升處理效率,減輕云端的負(fù)荷。由于更加靠近用戶,還可為用戶提供更快的響應(yīng),將需求在邊緣端解決。
 

2邊緣計(jì)算 vs 云計(jì)算 

  在國(guó)外,以思科為代表的網(wǎng)絡(luò)公司以霧計(jì)算為主。思科已經(jīng)不再成為工業(yè)互聯(lián)網(wǎng)聯(lián)盟的創(chuàng)立成員,但卻集中精力主導(dǎo)OpenFog開(kāi)放霧聯(lián)盟。
 

  無(wú)論是云、霧還是邊緣計(jì)算,本身只是實(shí)現(xiàn)物聯(lián)網(wǎng)、智能制造等所需要計(jì)算技術(shù)的一種方法或者模式。嚴(yán)格講,霧計(jì)算和邊緣計(jì)算本身并沒(méi)有本質(zhì)的區(qū)別,都是在接近于現(xiàn)場(chǎng)應(yīng)用端提供的計(jì)算。就其本質(zhì)而言,都是相對(duì)于云計(jì)算而言的。
 

云計(jì)算的范式

邊緣計(jì)算的范式

云計(jì)算的范式
 

  邊緣計(jì)算的范式 從二者的計(jì)算范式可以看出來(lái),邊緣側(cè)的數(shù)據(jù)計(jì)算,一下子變得豐富起來(lái)。這里產(chǎn)生了全新的想象空間。
 

3物聯(lián)網(wǎng)應(yīng)用催生 

  全球智能手機(jī)的快速發(fā)展,推動(dòng)了移動(dòng)終端和“邊緣計(jì)算”的發(fā)展。而萬(wàn)物互聯(lián)、萬(wàn)物感知的智能社會(huì),則是跟物聯(lián)網(wǎng)發(fā)展相伴而生,邊緣計(jì)算系統(tǒng)也因此應(yīng)聲而出。
 

  事實(shí)上,物聯(lián)網(wǎng)的概念已經(jīng)提出有超過(guò)15年的歷史,然而,物聯(lián)網(wǎng)卻并未成為一個(gè)火熱的應(yīng)用。一個(gè)概念到真正的應(yīng)用有一個(gè)較長(zhǎng)的過(guò)程,與之匹配的技術(shù)、產(chǎn)品設(shè)備的成本、接受程度、試錯(cuò)過(guò)程都是漫長(zhǎng)的,因此往往不能很快形成大量使用的市場(chǎng)。
 

邊緣計(jì)算在整個(gè)計(jì)算中的位置

  邊緣計(jì)算在整個(gè)計(jì)算中的位置 根據(jù)Gartner的技術(shù)成熟曲線理論來(lái)說(shuō),在2015年IoT從概念上而言,已經(jīng)到達(dá)*位置。因此,物聯(lián)網(wǎng)的大規(guī)模應(yīng)用也開(kāi)始加速。因此未來(lái)5-10年內(nèi)IoT會(huì)進(jìn)入一個(gè)應(yīng)用爆發(fā)期,邊緣計(jì)算也隨之被預(yù)期將得到更多的應(yīng)用。
 

Gartner技術(shù)成熟曲線

Gartner技術(shù)成熟曲線 邊緣計(jì)算邊緣計(jì)算的架構(gòu)
 

  在中國(guó),邊緣計(jì)算聯(lián)盟ECC正在努力推動(dòng)三種技術(shù)的融合,也就是OICT的融合(運(yùn)營(yíng)Operational、信息Information、通訊Communication Technology)。而其計(jì)算對(duì)象,則主要定義的了四個(gè)領(lǐng)域,個(gè)是設(shè)備域的問(wèn)題,[1] 出現(xiàn)的純粹的IoT設(shè)備,跟自動(dòng)化的I/O采集相比較而言,有不同但也有重疊部分。那些可以直接用于在頂層優(yōu)化,而并不參與控制本身的數(shù)據(jù),是可以直接放在邊緣側(cè)完成處理;第二個(gè)是網(wǎng)絡(luò)域。在傳輸層面,直接的末端IoT數(shù)據(jù)、與來(lái)自自動(dòng)化產(chǎn)線的數(shù)據(jù),其傳輸方式、機(jī)制、協(xié)議都會(huì)有不同,因此,這里要解決傳輸?shù)臄?shù)據(jù)標(biāo)準(zhǔn)問(wèn)題,當(dāng)然,在OPC UA架構(gòu)下可以直接的訪問(wèn)底層自動(dòng)化數(shù)據(jù),但是,對(duì)于Web數(shù)據(jù)的交互而言,這里會(huì)存在IT與OT之間的協(xié)調(diào)問(wèn)題,盡管有一些的自動(dòng)化企業(yè)已經(jīng)提供了針對(duì)Web方式數(shù)據(jù)傳輸?shù)臋C(jī)制,但是,大部分現(xiàn)場(chǎng)的數(shù)據(jù)仍然存在這些問(wèn)題。第三是數(shù)據(jù)域,數(shù)據(jù)傳輸后的數(shù)據(jù)存儲(chǔ)、格式等這些數(shù)據(jù)域需要解決的問(wèn)題,也包括數(shù)據(jù)的查詢與數(shù)據(jù)交互的機(jī)制和策略問(wèn)題都是在這個(gè)領(lǐng)域里需要考慮的問(wèn)題。
 

  后一個(gè),也是難的應(yīng)用域,這個(gè)可能是為難以解決的問(wèn)題,針對(duì)這一領(lǐng)域的應(yīng)用模型尚未有較多的實(shí)際應(yīng)用。
 

  邊緣計(jì)算聯(lián)盟ECC對(duì)于邊緣計(jì)算的參考架構(gòu)的定義,包含了設(shè)備、網(wǎng)絡(luò)、數(shù)據(jù)與應(yīng)用四域,平臺(tái)提供者主要提供在網(wǎng)絡(luò)互聯(lián)(包括總線)、計(jì)算能力、數(shù)據(jù)存儲(chǔ)與應(yīng)用方面的軟硬件基礎(chǔ)設(shè)施。
 

邊緣計(jì)算參考架構(gòu)1.0

  
邊緣計(jì)算參考架構(gòu)1.0 而從產(chǎn)業(yè)價(jià)值鏈整合角度而言,ECC提出了CROSS,即在敏捷聯(lián)接(Connection)的基礎(chǔ)上,實(shí)現(xiàn)實(shí)時(shí)業(yè)務(wù)(Real-time)、數(shù)據(jù)優(yōu)化(Data Optimization)、應(yīng)用智能(Smart)、安全與隱私保護(hù)(Security),為用戶在網(wǎng)絡(luò)邊緣側(cè)帶來(lái)價(jià)值和機(jī)會(huì),也就是聯(lián)盟成員要關(guān)注的重點(diǎn)。
 

4計(jì)算的本質(zhì) 

  自動(dòng)化事實(shí)上是一個(gè)以“控制”為核心??刂剖腔凇靶盘?hào)”的,而“計(jì)算”則是基于數(shù)據(jù)進(jìn)行的,更多意義是指“策略”、“規(guī)劃”,因此,它更多聚焦于在“調(diào)度、優(yōu)化、路徑”。就像對(duì)全國(guó)的高鐵進(jìn)行調(diào)度的系統(tǒng)一樣,每增加一個(gè)車次減少都會(huì)引發(fā)調(diào)度系統(tǒng)的調(diào)整,它是基于時(shí)間和節(jié)點(diǎn)的運(yùn)籌與規(guī)劃問(wèn)題。邊緣計(jì)算在工業(yè)領(lǐng)域的應(yīng)用更多是這類“計(jì)算”。
 

  簡(jiǎn)單地說(shuō),傳統(tǒng)自動(dòng)控制基于信號(hào)的控制,而邊緣計(jì)算則可以理解為“基于信息的控制”。
 

  值得注意的是,邊緣計(jì)算、霧計(jì)算雖然說(shuō)的是低延時(shí),但是其50mS、100mS這種周期對(duì)于高精度機(jī)床、機(jī)器人、高速圖文印刷系統(tǒng)的100μS這樣的“控制任務(wù)”而言,仍然是非常大的延遲的,邊緣計(jì)算所謂的“實(shí)時(shí)”,從自動(dòng)化行業(yè)的視角來(lái)看——很不幸,依然被歸在“非實(shí)時(shí)”的應(yīng)用里的。
 

云計(jì)算—邊緣計(jì)算區(qū)分處理數(shù)據(jù)

云計(jì)算—邊緣計(jì)算區(qū)分處理數(shù)據(jù) 邊緣計(jì)算“邊緣計(jì)算”產(chǎn)業(yè)
 

  邊緣計(jì)算是在高帶寬、時(shí)間敏感型、物聯(lián)網(wǎng)集成這個(gè)背景下發(fā)展起來(lái)的技術(shù),“Edge”這個(gè)概念的確較早為包括ABB、B&R、Schneider、KUKA這類自動(dòng)化/機(jī)器人廠商所提及,其本意是涵蓋那些“貼近用戶與數(shù)據(jù)源的IT資源”。這是屬于從傳統(tǒng)自動(dòng)化廠商向IT廠商延伸的一種設(shè)計(jì),2016年4月5日Schneider已經(jīng)號(hào)稱可以為邊緣計(jì)算定義了物理基礎(chǔ)設(shè)施——盡管,主打的還是其“微數(shù)據(jù)中心”的概念。而其它自動(dòng)化廠商提及計(jì)算,都是表現(xiàn)出與IT融合的一種趨勢(shì),并且同時(shí)具有邊緣與泛在的概念在其中。
 

  IT與OT事實(shí)上也是在相互滲透的,自動(dòng)化廠商都已經(jīng)開(kāi)始在延伸其產(chǎn)品中的IT能力,包括Bosch、SIEMENS、GE這些大的廠商在信息化、數(shù)字化軟件平臺(tái)方面,也包括了像貝加萊、羅克韋爾等都在提供基礎(chǔ)的IoT集成、Web技術(shù)的融合方面的產(chǎn)品與技術(shù)。事實(shí)上IT技術(shù)也開(kāi)始在其產(chǎn)品中集成總線接口、HMI功能的產(chǎn)品,以及工業(yè)現(xiàn)場(chǎng)傳輸設(shè)備網(wǎng)關(guān)、交換機(jī)等產(chǎn)品。
 

  IoT被視為未來(lái)快速成長(zhǎng)的一個(gè)領(lǐng)域,包括前沿的已經(jīng)出現(xiàn)了各種基于Internet的技術(shù),高通已經(jīng)提出了Internet of Everything—可以稱為IoX。因此新一個(gè)產(chǎn)業(yè)格局呼之欲出,邊緣計(jì)算聯(lián)盟ECC的邊界定義而言,華為其主旨在提供計(jì)算平臺(tái),包括基礎(chǔ)的網(wǎng)絡(luò)、云、邊緣服務(wù)器、傳輸設(shè)備與接口標(biāo)準(zhǔn)等,而Intel、ARM則提供為邊緣計(jì)算的芯片與處理能力保障,信通院則扮演傳輸協(xié)議與系統(tǒng)實(shí)現(xiàn)的集成,而沈陽(yáng)自動(dòng)化所、軟通動(dòng)力則扮演實(shí)際應(yīng)用的角色。
 

  但是,邊緣計(jì)算/霧計(jì)算要落地,尤其是在工業(yè)中,“應(yīng)用”才是為核心的問(wèn)題,所謂的IT與OT的融合,更強(qiáng)調(diào)在OT側(cè)的應(yīng)用,即運(yùn)營(yíng)的系統(tǒng)所要實(shí)現(xiàn)的目標(biāo)。
 

5大融合下的大分工 

  在工業(yè)領(lǐng)域,邊緣應(yīng)用場(chǎng)景包括能源分析、物流規(guī)劃、工藝優(yōu)化分析等。就生產(chǎn)任務(wù)分配而言,需根據(jù)生產(chǎn)訂單為生產(chǎn)進(jìn)行優(yōu)的設(shè)備排產(chǎn)排程,這是APS或者廣義MES的基本任務(wù)單元,需要大量計(jì)算。這些計(jì)算是靠具體MES廠商的軟件平臺(tái),還是“邊緣計(jì)算”平臺(tái)—基于Web技術(shù)構(gòu)建的分析平臺(tái),在未來(lái)并不會(huì)存在太多差別。從某種意義上說(shuō)MES系統(tǒng)本身是一種傳統(tǒng)的架構(gòu),而其核心既可以在專用的軟件系統(tǒng),也可以存在于云、霧或者邊緣側(cè)。[2]
 

  在這樣的應(yīng)用場(chǎng)景,總體而言,在整個(gè)智能制造、工業(yè)物聯(lián)網(wǎng)的應(yīng)用中,各自分工如下。
 

  自動(dòng)化廠商提供“采集”,包括數(shù)據(jù)源的作用,這是利用自動(dòng)化已經(jīng)在分布式I/O采集、總線互聯(lián)、以及控制機(jī)器所產(chǎn)生的機(jī)器生產(chǎn)、狀態(tài)、質(zhì)量等原生“信息”。
 

邊緣計(jì)算(橙色部分)的連接架構(gòu)

 

  邊緣計(jì)算(橙色部分)的連接架構(gòu) ICT廠商則提供“傳輸”,實(shí)現(xiàn)工業(yè)連接。因?yàn)樵谌绾翁峁?shù)據(jù)的傳輸、存儲(chǔ)、計(jì)算方面,ICT廠商有其傳統(tǒng)優(yōu)勢(shì),包括成本方面,已經(jīng)云平臺(tái)的優(yōu)勢(shì)。
 

  傳統(tǒng)工業(yè)企業(yè)的業(yè)務(wù)經(jīng)驗(yàn)和知識(shí),則為分析軟件(獨(dú)立的或者企業(yè)內(nèi)部)廠商提供“分析”的依據(jù)。這些業(yè)務(wù)過(guò)程的理解,仍然是*。產(chǎn)業(yè)鏈的協(xié)同,目標(biāo),仍然是解決“質(zhì)量、成本、交付”的核心問(wèn)題。

參考資料

參考資料編輯區(qū)域


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    TSX530-F型網(wǎng)關(guān)是一款智能型視頻邊緣計(jì)算網(wǎng)關(guān),最高可支持32路網(wǎng)絡(luò)攝像機(jī)接入,具備H.264/H.265視頻編碼、AI分析及網(wǎng)絡(luò)傳輸功能,支持車牌識(shí)別、車輛顏色和車型識(shí)別等智能功能,支持加載清新智易訓(xùn)練的智能算法,可運(yùn)行Java、Python等語(yǔ)言開(kāi)發(fā)的應(yīng)用程序,支持本地WEB UI顯示,可廣泛各種需要對(duì)視頻進(jìn)行分析和匯聚的邊緣場(chǎng)景。
  • 邊緣計(jì)算網(wǎng)關(guān)

    邊緣計(jì)算網(wǎng)關(guān)采集傳感器數(shù)據(jù)的智能網(wǎng)關(guān)產(chǎn)品采用高集成 ARM 芯片,具有高性能、低功耗、實(shí)時(shí)數(shù)據(jù)采集,實(shí)時(shí)數(shù)據(jù)監(jiān)控、設(shè)備便捷管理等特點(diǎn),廣泛應(yīng)用于建筑能耗系統(tǒng),電力監(jiān)控,電力需求側(cè),電網(wǎng)綜能平臺(tái),泛在電力物聯(lián)網(wǎng)等場(chǎng)景。
  • 安科瑞AF-GSM500-4GSE邊緣

    邊緣計(jì)算能力:利用邊緣計(jì)算架構(gòu),AF-GSM500-4GSE-2S能夠在離數(shù)據(jù)源較近的地方進(jìn)行數(shù)據(jù)處理,有效降低通信延遲,增強(qiáng)反應(yīng)速度,提高數(shù)據(jù)分析效率。
    實(shí)時(shí)監(jiān)測(cè)功能:該網(wǎng)關(guān)設(shè)備可以實(shí)現(xiàn)對(duì)電力系統(tǒng)的實(shí)時(shí)監(jiān)控,保障公共場(chǎng)所的用電安全,及時(shí)發(fā)現(xiàn)并處理潛在的安全隱患。
    4G LTE連接:支持4G網(wǎng)絡(luò)連接,確保數(shù)據(jù)傳輸?shù)姆€(wěn)定性。其兼容性強(qiáng),能夠與市場(chǎng)上大多數(shù)智能設(shè)備無(wú)縫對(duì)接,實(shí)現(xiàn)數(shù)據(jù)共享。
  • 智能通信管理機(jī) ANet邊緣

    智能通信管理機(jī) ANet邊緣計(jì)算網(wǎng)關(guān) 工業(yè)網(wǎng)關(guān)主要功能--終端設(shè)備與系統(tǒng)平臺(tái)間的數(shù)據(jù)交互橋梁
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