隨著現(xian)(xian)代工(gong)業(ye)的(de)(de)(de)發(fa)展，電(dian)(dian)(dian)動(dong)(dong)閥(fa)(fa)門越(yue)來越(yue)普及，而閥(fa)(fa)門電(dian)(dian)(dian)動(dong)(dong)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)及控制(zhi)(zhi)(zhi)器各(ge)(ge)(ge)式(shi)各(ge)(ge)(ge)樣，無論是(shi)形式(shi)上(shang)(shang)(shang)，還是(shi)原理(li)上(shang)(shang)(shang)不(bu)(bu)(bu)盡(jin)相(xiang)(xiang)同(tong)(tong)(tong)。用戶選擇(ze)閥(fa)(fa)門和(he)電(dian)(dian)(dian)動(dong)(dong)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)時應選擇(ze)同(tong)(tong)(tong)一(yi)廠家的(de)(de)(de)控制(zhi)(zhi)(zhi)器，否(fou)則將(jiang)給(gei)用戶安裝(zhuang)(zhuang)(zhuang)使(shi)用帶來儀(yi)表全(quan)部入網(wang)，包括電(dian)(dian)(dian)力、氧氣、氮氣和(he)壓縮(suo)空氣，仍采(cai)用串行(xing)通訊(xun)方(fang)式(shi)，并計(ji)劃與水(shui)系統容于一(yi)體，使(shi)全(quan)公司所有(you)的(de)(de)(de)能(neng)源(yuan)(yuan)數據都采(cai)集(ji)進(jin)(jin)機。實現(xian)(xian)能(neng)源(yuan)(yuan)計(ji)量(liang)(liang)(liang)(liang)工(gong)作(zuo)的(de)(de)(de)現(xian)(xian)代化管理(li)。 在物(wu)資運營計(ji)量(liang)(liang)(liang)(liang)方(fang)面(mian)，很(hen)多冶金企業(ye)也(ye)都進(jin)(jin)行(xing)聯(lian)網(wang)，但(dan)網(wang)絡連(lian)接結構(gou)都不(bu)(bu)(bu)大(da)相(xiang)(xiang)同(tong)(tong)(tong)。物(wu)資計(ji)量(liang)(liang)(liang)(liang)網(wang)的(de)(de)(de)下層(ceng)一(yi)般(ban)都采(cai)用RS232連(lian)接物(wu)資計(ji)量(liang)(liang)(liang)(liang)儀(yi)表和(he)上(shang)(shang)(shang)位機，這一(yi)層(ceng)物(wu)理(li)連(lian)接方(fang)式(shi)大(da)都一(yi)致。將(jiang)各(ge)(ge)(ge)個計(ji)量(liang)(liang)(liang)(liang)站的(de)(de)(de)上(shang)(shang)(shang)位機進(jin)(jin)行(xing)聯(lian)網(wang)并將(jiang)數據匯總到服(fu)務器的(de)(de)(de)上(shang)(shang)(shang)層(ceng)聯(lian)網(wang)方(fang)式(shi)就(jiu)(jiu)各(ge)(ge)(ge)有(you)不(bu)(bu)(bu)同(tong)(tong)(tong)了。有(you)些(xie)上(shang)(shang)(shang)層(ceng)網(wang)也(ye)采(cai)用RS485串行(xing)通訊(xun)方(fang)式(shi)，但(dan)這種(zhong)方(fang)式(shi)規模不(bu)(bu)(bu)宜過(guo)大(da)，而且地(di)理(li)位置(zhi)(zhi)(zhi)也(ye)不(bu)(bu)(bu)宜太遠。該方(fang)式(shi)如圖3所示。采(cai)用這種(zhong)方(fang)式(shi)還需要用戶自己開發(fa)數據提交(jiao)的(de)(de)(de)驅動(dong)(dong)程序，軟件開發(fa)復雜(za)。還有(you)的(de)(de)(de)不(bu)(bu)(bu)必(bi)(bi)(bi)要的(de)(de)(de)麻煩。若(ruo)在設(she)計(ji)上(shang)(shang)(shang)稍(shao)作(zuo)改(gai)進(jin)(jin)，會有(you)更廣闊(kuo)的(de)(de)(de)前景。 閥(fa)(fa)門電(dian)(dian)(dian)動(dong)(dong)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)一(yi)般(ban)是(shi)與90。(特殊情況為9O。一(yi)18O。)回轉的(de)(de)(de)蝶閥(fa)(fa)、球閥(fa)(fa)、旋(xuan)塞閥(fa)(fa)企業(ye)采(cai)用MODEM 進(jin)(jin)行(xing)上(shang)(shang)(shang)層(ceng)組(zu)網(wang)，這種(zhong)方(fang)式(shi)因(yin)速度制(zhi)(zhi)(zhi)約(yue)，基本不(bu)(bu)(bu)能(neng)實現(xian)(xian)數據的(de)(de)(de)實時傳送。近來又出(chu)現(xian)(xian)了利用電(dian)(dian)(dian)話線(xian)(xian)(xian)VDSL或MSDSL及電(dian)(dian)(dian)話線(xian)(xian)(xian)路進(jin)(jin)行(xing)組(zu)網(wang)的(de)(de)(de)方(fang)案(an)，但(dan)對電(dian)(dian)(dian)話線(xian)(xian)(xian)路質量(liang)(liang)(liang)(liang)和(he)線(xian)(xian)(xian)路距離要求嚴(yan)格，否(fou)則易出(chu)現(xian)(xian)通訊(xun)故障(zhang)。 在使(shi)用或安裝(zhuang)(zhuang)(zhuang)電(dian)(dian)(dian)動(dong)(dong)閥(fa)(fa)門時，部分控制(zhi)(zhi)(zhi)器存在很(hen)大(da)缺陷。控制(zhi)(zhi)(zhi)器大(da)體是(shi)盒式(shi)封(feng)閉形結構(gou)。若(ruo)出(chu)現(xian)(xian)故障(zhang)，查線(xian)(xian)(xian)或換元(yuan)件必(bi)(bi)(bi)須將(jiang)其外(wai)殼打(da)開抽(chou)出(chu)方(fang)可進(jin)(jin)行(xing)。這道工(gong)序很(hen)繁瑣，必(bi)(bi)(bi)須小心(xin)翼翼，一(yi)不(bu)(bu)(bu)小心(xin)拉掉其中(zhong)的(de)(de)(de)外(wai)部接線(xian)(xian)(xian)就(jiu)(jiu)須重新查線(xian)(xian)(xian)恢(hui)復。所以設(she)計(ji)者應考慮(lv)安放控制(zhi)(zhi)(zhi)器的(de)(de)(de)足夠空間。況且現(xian)(xian)成(cheng)的(de)(de)(de)控制(zhi)(zhi)(zhi)器成(cheng)本高。故筆(bi)者認為能(neng)不(bu)(bu)(bu)用現(xian)(xian)成(cheng)控制(zhi)(zhi)(zhi)器的(de)(de)(de)地(di)方(fang)盡(jin)量(liang)(liang)(liang)(liang)不(bu)(bu)(bu)用。建議(yi)：超過(guo)四個就(jiu)(jiu)自行(xing)設(she)計(ji)控制(zhi)(zhi)(zhi)回路，特別是(shi)電(dian)(dian)(dian)動(dong)(dong)閥(fa)(fa)門集(ji)中(zhong)的(de)(de)(de)地(di)方(fang)。
