9457-023812001101現(xiàn)貨

隨著“制造2025”“互聯(lián)網(wǎng)+”“網(wǎng)絡(luò)強國”等戰(zhàn)略的深入實施，通信及自動控制技術(shù)、傳
感技術(shù)等信息技術(shù)快速發(fā)展、不斷滲透應用，“數(shù)字工廠”概念應運而生。
通信設(shè)備制造業(yè)迎轉(zhuǎn)型拐點
信息通信行業(yè)是國民經(jīng)濟基礎(chǔ)性、戰(zhàn)略性、先導性產(chǎn)業(yè)，對我國經(jīng)濟轉(zhuǎn)型升級有著重要的支撐作用，
而通信設(shè)備制造業(yè)為信息通信行業(yè)提供基礎(chǔ)設(shè)施，是其基礎(chǔ)性領(lǐng)域。
通信設(shè)備制造業(yè)呈現(xiàn)出以下特點：產(chǎn)業(yè)鏈鏈條清晰，產(chǎn)業(yè)規(guī)模和新產(chǎn)品市場空間以技術(shù)發(fā)展為爆發(fā)點
；需求方規(guī)模經(jīng)濟效應突出；對其他行業(yè)出高滲透性；市場競爭日趨加大，行業(yè)需求，利潤
空間受到

對市場而言，西門子系列plc一直在中國占主導地位，占有率更是遠遠超過了三菱和歐姆龍，雖然羅克韋爾的plc在近幾年市場占有率上升得很快，但是暫時還是不能撼動西門子在國內(nèi)市場的霸主地位?！?】據(jù)市場反映，西門子plc具有抗干擾能力強，穩(wěn)定性高，通訊能力好，軟件編程方便，組態(tài)軟件連接容易等優(yōu)點，但普遍缺點是價格比較貴，所以按照全plc的發(fā)展趨勢來看，西門子plc的發(fā)展趨勢應該是體積進一步減少，成本進一步降低來適應工廠空間和市場需求。【4】【13】
對大多數(shù)控制器來說，系統(tǒng)內(nèi)部有自帶的算法，如常見的PID算法，只要設(shè)置好參數(shù)就能實現(xiàn)一般的PID控制器功能。這樣大大提高了生產(chǎn)效率和設(shè)備成本。
二．
人機界面（Human Machine Interaction，簡稱HMI），又稱用戶界面或使用者界面，是人與計算機之間傳遞、交換信息的媒介和對話接口，是計算機系統(tǒng)的重要組成部分。是系統(tǒng)和用戶之間進行交互和信息交換的媒介，它實現(xiàn)信息的內(nèi)部形式與人類可以接受形式之間的轉(zhuǎn)換。凡參與人機信息交流的領(lǐng)域都存在著人機界面。【5】
傳統(tǒng)的工廠監(jiān)控用的是人力來監(jiān)測系統(tǒng)哪一部分出現(xiàn)問題然后著手解決，這樣的話控制系統(tǒng)每一部分都要安排一部分人每天不停監(jiān)控，測量設(shè)備內(nèi)部是否出現(xiàn)問題，這樣大大浪費了人力資源和時間而且必須是系統(tǒng)出了問題才能檢測得到，這樣對工廠的生產(chǎn)有巨大的影響。
為了解決這樣的問題人機界面軟件應運而生，人機界面能通過變量連接在線檢測變量的變化趨勢而描繪出變量變化趨勢圖，人們只需要在監(jiān)控室里面監(jiān)控系統(tǒng)變量的變化趨勢是否觸及報警線而提前對系統(tǒng)故障進行應對。而且人機界面具有在線監(jiān)控，故障報警，數(shù)據(jù)歸檔等功能對過程變量的數(shù)據(jù)進行存儲，對往后控

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9457-023812001101

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9457-023812001101

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9457-023812001101