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地址：北京市昌平區(qū)回龍觀北京國際信息產業(yè)基地發(fā)展路1號院（集智達大廈5層）

郵編：102206

電話：010-81909399

傳真：010-81909456

網址：http://www.gemotech.cn

E-mail：marketing@gemotech.cn

R-8031熱電阻輸入模塊在紡織印染廠中的應用　

在過去的二十年中，勞動成本持續(xù)增長，雇員對雇傭標準法規(guī)有了更多的認識。必需削減成本，提高工廠的競爭力。業(yè)主希望在他的工廠采用計算機自動化系統(tǒng)，并且向集智達咨詢尋求解決方案。

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系統(tǒng)要求

紡織印染廠是一家中等規(guī)模的工廠，擁有 8 條印染線。每條印染線有 10 個印染筒。影響印染質量的一個主要因素是要在印染過程中對每個印染筒中的溫度進行嚴格控制。業(yè)主過去通常讓現場工人手工記錄溫度。自動化系統(tǒng)必須能夠在較大范圍內以一定的精度遠程收集數據。其目的是在保持產品質量的前提下減低勞動成本。系統(tǒng)必須能夠在高溫和噪聲環(huán)境下可靠運行。由于紡織印染工業(yè)的利潤微薄，因此業(yè)主十分關心成本。

系統(tǒng)體系結構

集智達在每個印染筒的前端使用它的 RemoDAQ-8031 RTD 模擬量輸入模塊和一個 PT-100 溫度傳感器。然后，把生產線上的每個節(jié)點連接到 RS-485 網絡。RemoDAQ-8520 隔離 RS-232 到 RS-485 轉換器把 RS-485 信號轉換成 RS-232 信號，作為主機的輸入。

RemoDAQ-8031 RTD 模塊可以采集Pt100，Cu100，Cu50，BA1等熱電阻類型的傳感器值。它提供 2、3 或 4 線連接。高精度的電流源提供 RTD 激勵。測量分辨率可以達到 0.01°C。這保證了印染筒溫度控制的可靠性。

RS-485 網絡連接八十個節(jié)點，高可達到128個節(jié)點。RS-485 網絡具有很好的抗噪聲干擾特性，能夠進行長距離通信，這使其可以應用于大型工廠。一個RemoDAQ-8031模塊收集每個印染筒的溫度，并且實時地傳回到控制室?？刂剖业谋O(jiān)視人員可以分析數據并對過程做出調整。　　　　

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