suizhejisuanjijishuhetongxunjishudefeisufazhan，womendeshehuiyijingjinruxinxishidai。womenmeitianbubidengyoudiyuanjiangbaozhitoudidaowomenxinxiangzhong，jiukeyitongguohulianwangsousuoyinqingGoogle
、百度等查閱每天世界各地發生的重大事件及我們關注的各種信息。隻要我們願意
，我們可以通過人人網、Facebook、MySpace等網站尋找老朋友，結交新朋友；分(fen)享(xiang)自(zi)己(ji)的(de)生(sheng)活(huo)，關(guan)注(zhu)朋(peng)友(you)的(de)近(jin)況(kuang)。這(zhe)種(zhong)快(kuai)速(su)的(de)信(xin)息(xi)獲(huo)取(qu)我(wo)交(jiao)流(liu)方(fang)式(shi)，在(zai)不(bu)斷(duan)改(gai)變(bian)我(wo)們(men)的(de)生(sheng)活(huo)方(fang)式(shi)的(de)同(tong)時(shi)，也(ye)促(cu)使(shi)我(wo)們(men)生(sheng)產(chan)方(fang)式(shi)和(he)管(guan)理(li)理(li)念(nian)變(bian)化(hua)。現(xian)在(zai)我(wo)們(men)的(de)企(qi)業(ye)可(ke)以(yi)將(jiang)總(zong)部(bu)和(he)研(yan)發(fa)部(bu)門(men)設(she)在(zai)一(yi)些(xie)技(ji)術(shu)、交通和信息相對發達的地區，方便我們技術革新
、產品推廣和信息獲取；可(ke)以(yi)將(jiang)企(qi)業(ye)的(de)生(sheng)產(chan)部(bu)門(men)設(she)在(zai)離(li)生(sheng)產(chan)所(suo)需(xu)原(yuan)材(cai)料(liao)較(jiao)近(jin)的(de)地(di)區(qu)，節(jie)省(sheng)降(jiang)低(di)生(sheng)產(chan)成(cheng)本(ben)。而(er)這(zhe)種(zhong)生(sheng)產(chan)與(yu)經(jing)營(ying)分(fen)離(li)，不(bu)同(tong)部(bu)門(men)或(huo)分(fen)公(gong)司(si)分(fen)布(bu)在(zai)不(bu)同(tong)省(sheng)市(shi)甚(shen)至(zhi)不(bu)同(tong)國(guo)家(jia)的(de)公(gong)司(si)也(ye)變(bian)的(de)越(yue)來(lai)越(yue)普(pu)及(ji)。在(zai)這(zhe)種(zhong)多(duo)部(bu)門(men)跨(kua)地(di)區(qu)企(qi)業(ye)中(zhong)，經(jing)營(ying)管(guan)理(li)者(zhe)希(xi)望(wang)他(ta)們(men)在(zai)沒(mei)有(you)身(shen)處(chu)生(sheng)產(chan)第(di)一(yi)線(xian)時(shi)，在(zai)總(zong)部(bu)的(de)生(sheng)產(chan)分(fen)析(xi)會(hui)上(shang)，在(zai)出(chu)差(cha)的(de)旅(lv)途(tu)上(shang)，也(ye)能(neng)及(ji)時(shi)了(le)解(jie)生(sheng)產(chan)情(qing)況(kuang)。他(ta)們(men)希(xi)望(wang)當(dang)客(ke)戶(hu)需(xu)要(yao)額(e)外(wai)訂(ding)購(gou)一(yi)批(pi)產(chan)品(pin)時(shi)，他(ta)們(men)能(neng)夠(gou)知(zhi)道(dao)生(sheng)產(chan)裝(zhuang)置(zhi)是(shi)否(fou)有(you)足(zu)夠(gou)的(de)生(sheng)產(chan)能(neng)力(li)，生(sheng)產(chan)所(suo)需(xu)的(de)原(yuan)材(cai)料(liao)能(neng)否(fou)滿(man)足(zu)額(e)外(wai)要(yao)求(qiu)。當(dang)生(sheng)產(chan)可(ke)能(neng)發(fa)生(sheng)重(zhong)大(da)事(shi)故(gu)時(shi)
，在(zai)他(ta)們(men)手(shou)機(ji)上(shang)可(ke)以(yi)提(ti)前(qian)得(de)到(dao)預(yu)警(jing)通(tong)知(zhi)，從(cong)而(er)避(bi)免(mian)重(zhong)大(da)事(shi)故(gu)的(de)發(fa)生(sheng)。這(zhe)種(zhong)遠(yuan)程(cheng)監(jian)控(kong)管(guan)理(li)模(mo)式(shi)，在(zai)MES（製造執行係統），SIS（廠級信息監控係統）
，EMS（能源管理係統）dengxitongzhongyijingdedaoguangfanyingyong。zaizheliwomenbushixiangtaolunruhehuoquzhexiexinxi，ruheduizhexiexinxijiagongcunchu，eryaotaolundeshizaihuoquzhexiexinxishi，shengchanjiankongguochengdeanquanwenti。erqianmianxushudeneirongyezhuyaoshiyaoshuomingyuanchengshengchanjiankongdebixuxinghezhongyaoxing

，womenbunengyinweiyouanquanwentieryinyefeishi，eryinggaijijijiejuewenti。namewomenyaotaolundeanquanwentiyoushishenmene？najiuwomenjiangyizuoshengchanchanghuoyigeqiyedekongzhixitongyushengchanguanlixitongzuchengyigexinxiguanlishi，kenengyinqidekongzhixitonganquanwenti。

在zai早zao期qi的de生sheng產chan企qi業ye管guan理li中zhong

，企qi業ye的de管guan理li係xi統tong與yu生sheng產chan控kong製zhi係xi統tong是shi相xiang互hu獨du立li。每mei套tao生sheng產chan控kong製zhi係xi統tong都dou是shi一yi個ge信xin息xi孤gu島dao

，係xi統tong生sheng成cheng的de信xin息xi隻zhi能neng在zai係xi統tong內nei部bu使shi用yong
，同tong樣yang對dui係xi統tong下xia達da的de任ren何he操cao作zuo指zhi令ling也ye是shi在zai係xi統tong內nei部bu完wan成cheng。在zai現xian代dai化hua的de生sheng產chan企qi業ye中zhong
，通tong過guo構gou建jianMES、SIS
、EMSdengxitong，liyongjisuanjihetongxunjishujiangshengchanguanlixitongyushengchankongzhixitongyoujidijieheqilai，congerbaozhengxinxihuoqudezhunquexinghejishixing。erzhezhongjiehezuichushijiyukaifade
、雙向的通訊技術平台來實現的。而這種開放的、雙向應用平台隨著應用區域（全廠

、全市、全國……）和傳送載體（城域網、因特網、移動網）拓tuo展zhan

，而er信xin息xi的de安an全quan性xing就jiu變bian的de越yue來lai越yue凸tu出chu了le。雖sui然ran我wo們men可ke以yi利li用yong一yi些xie防fang火huo牆qiang技ji術shu，將jiang我wo們men係xi統tong應ying用yong分fen為wei信xin任ren區qu和he非fei信xin任ren區qu，對dui來lai自zi於yu非fei信xin任ren區qu內nei的de訪fang問wen和he操cao作zuo加jia以yi嚴yan格ge控kong製zhi。但dan由you於yu受shou到dao係xi統tong構gou建jian者zhe、係xi統tong使shi用yong者zhe和he外wai部bu入ru侵qin等deng因yin素su的de影ying響xiang，使shi這zhe種zhong舊jiu式shi防fang禦yu方fang式shi難nan以yi發fa揮hui應ying有you的de效xiao用yong
，從cong而er存cun在zai生sheng產chan控kong製zhi係xi統tong被bei非fei法fa操cao控kong的de可ke能neng性xing。這zhe種zhong非fei法fa入ru侵qin，當dang入ru侵qin者zhe是shi恐kong怖bu主zhu義yi者zhe或huo敵di對dui勢shi力li時shi，並bing且qie通tong過guo管guan理li係xi統tong可ke以yi對dui生sheng產chan控kong製zhi係xi統tong直zhi接jie操cao控kong時shi，入ru侵qin產chan生sheng的de後hou果guo是shi不bu可ke以yi想xiang象xiang的de。那na麼me如ru何he解jie決jue這zhe一yi問wen題ti呢ne？

通過對於MES、SIS
、EMSdengyingyongxitongdefenxi，zaizhexieyingyongzhongzaixinxidechuanshufangxiangshang，youkongzhixitongchuansongdaozhexiexitongzhongshujuyaoqiushujuzhunquedubijiaogao
，shixiaoxingbijiaoqiang，shujuliangfeichangda；而(er)反(fan)方(fang)向(xiang)的(de)數(shu)據(ju)多(duo)為(wei)計(ji)劃(hua)性(xing)調(tiao)度(du)數(shu)據(ju)或(huo)生(sheng)產(chan)工(gong)藝(yi)條(tiao)件(jian)改(gai)變(bian)型(xing)數(shu)據(ju)，實(shi)效(xiao)性(xing)比(bi)較(jiao)弱(ruo)

，數(shu)據(ju)量(liang)也(ye)比(bi)較(jiao)小(xiao)。因(yin)此(ci)根(gen)據(ju)這(zhe)一(yi)數(shu)據(ju)傳(chuan)送(song)特(te)點(dian)

，我(wo)們(men)在(zai)生(sheng)產(chan)控(kong)製(zhi)係(xi)統(tong)與(yu)管(guan)理(li)係(xi)統(tong)建(jian)立(li)一(yi)種(zhong)特(te)殊(shu)的(de)數(shu)據(ju)通(tong)道(dao)。在(zai)這(zhe)個(ge)通(tong)道(dao)上(shang)控(kong)製(zhi)係(xi)統(tong)中(zhong)的(de)數(shu)據(ju)可(ke)以(yi)按(an)著(zhe)我(wo)們(men)的(de)需(xu)求(qiu)傳(chuan)送(song)給(gei)管(guan)理(li)係(xi)統(tong)，而(er)管(guan)理(li)係(xi)統(tong)中(zhong)的(de)數(shu)據(ju)不(bu)可(ke)以(yi)或(huo)隻(zhi)在(zai)嚴(yan)格(ge)受(shou)限(xian)的(de)條(tiao)件(jian)下(xia)傳(chuan)送(song)給(gei)控(kong)製(zhi)係(xi)統(tong)。

要想實現這一點，首先我們要從物理上（設備）確保這一目標的實現。這種物理上的改變首先要保證我們前期的設備（如：已經建立的以太網）投(tou)入(ru)得(de)以(yi)有(you)效(xiao)利(li)用(yong)，後(hou)期(qi)拓(tuo)展(zhan)費(fei)用(yong)不(bu)會(hui)太(tai)高(gao)。當(dang)前(qian)實(shi)現(xian)這(zhe)目(mu)標(biao)常(chang)用(yong)的(de)設(she)備(bei)就(jiu)是(shi)網(wang)閘(zha)。網(wang)閘(zha)通(tong)常(chang)由(you)內(nei)外(wai)兩(liang)個(ge)處(chu)理(li)單(dan)元(yuan)和(he)隔(ge)離(li)與(yu)交(jiao)換(huan)單(dan)元(yuan)組(zu)成(cheng)

，信(xin)息(xi)在(zai)網(wang)閘(zha)兩(liang)端(duan)傳(chuan)送(song)是(shi)由(you)兩(liang)個(ge)處(chu)理(li)單(dan)元(yuan)獨(du)立(li)完(wan)成(cheng)的(de)。在(zai)信(xin)息(xi)產(chan)生(sheng)端(duan)
，隻(zhi)有(you)滿(man)足(zu)此(ci)端(duan)接(jie)收(shou)策(ce)略(lve)的(de)信(xin)息(xi)，才(cai)能(neng)被(bei)放(fang)置(zhi)到(dao)隔(ge)離(li)與(yu)交(jiao)換(huan)單(dan)元(yuan)中(zhong)

；在(zai)網(wang)閘(zha)的(de)另(ling)一(yi)端(duan)，放(fang)置(zhi)在(zai)隔(ge)離(li)與(yu)交(jiao)換(huan)單(dan)元(yuan)中(zhong)信(xin)息(xi)也(ye)隻(zhi)有(you)滿(man)足(zu)本(ben)端(duan)的(de)傳(chuan)送(song)策(ce)略(lve)條(tiao)件(jian)下(xia)，信(xin)息(xi)才(cai)能(neng)被(bei)傳(chuan)送(song)真(zhen)正(zheng)的(de)目(mu)標(biao)係(xi)統(tong)中(zhong)。這(zhe)種(zhong)機(ji)製(zhi)確(que)保(bao)了(le)即(ji)使(shi)網(wang)閘(zha)的(de)對(dui)外(wai)端(duan)口(kou)受(shou)到(dao)攻(gong)擊(ji)，被(bei)惡(e)意(yi)控(kong)製(zhi)了(le)，隻(zhi)要(yao)傳(chuan)送(song)的(de)信(xin)息(xi)不(bu)滿(man)足(zu)內(nei)部(bu)轉(zhuan)發(fa)策(ce)略(lve)
，也(ye)不(bu)能(neng)傳(chuan)送(song)目(mu)標(biao)係(xi)統(tong)中(zhong)。

在zai使shi用yong網wang閘zha這zhe一yi物wu理li設she備bei後hou，信xin息xi傳chuan送song物wu理li特te性xing得de了le有you效xiao保bao證zheng，但dan又you產chan生sheng了le一yi個ge新xin的de問wen題ti
，那na就jiu是shi係xi統tong間jian應ying用yong信xin息xi會hui話hua問wen題ti。因yin為wei在zai原yuan有you體ti係xi結jie構gou中zhong，控kong製zhi係xi統tong與yuMES
、SIS、EMS等(deng)管(guan)理(li)係(xi)統(tong)之(zhi)間(jian)的(de)會(hui)話(hua)機(ji)製(zhi)通(tong)常(chang)是(shi)雙(shuang)向(xiang)的(de)，不(bu)受(shou)約(yue)束(shu)的(de)，因(yin)此(ci)在(zai)使(shi)用(yong)網(wang)閘(zha)同(tong)時(shi)也(ye)要(yao)求(qiu)係(xi)統(tong)之(zhi)間(jian)在(zai)軟(ruan)件(jian)層(ceng)能(neng)夠(gou)提(ti)供(gong)對(dui)網(wang)閘(zha)的(de)支(zhi)持(chi)。紫(zi)金(jin)橋(qiao)實(shi)時(shi)數(shu)據(ju)庫(ku)網(wang)閘(zha)數(shu)據(ju)傳(chuan)器(qi)和(he)網(wang)閘(zha)數(shu)據(ju)接(jie)收(shou)驅(qu)動(dong)正(zheng)是(shi)為(wei)解(jie)決(jue)這(zhe)一(yi)問(wen)題(ti)開(kai)發(fa)的(de)。

紫金橋實時數據庫通常作為MES、SIS、EMS係統與生產控製係統之間的數據交換和處理平台。在使用網閘時，在網閘的對內端（被保護端）首shou先xian要yao增zeng加jia一yi台tai紫zi金jin橋qiao前qian置zhi機ji，在zai前qian置zhi數shu據ju采cai機ji上shang除chu了le安an裝zhuang紫zi金jin橋qiao數shu據ju采cai集ji軟ruan件jian外wai，還hai要yao安an裝zhuang紫zi金jin橋qiao網wang閘zha數shu據ju傳chuan送song器qi。紫zi金jin橋qiao數shu據ju采cai集ji軟ruan件jian首shou先xian由you控kong製zhi係xi統tong上shang獲huo取qu數shu據ju，再zai通tong過guo網wang閘zha數shu據ju傳chuan送song器qi經jing網wang閘zha（按著網閘策略要求）傳送給外部（應用端）zijinqiaoshishishujukufuwuqi。zaishishishujukufuwuqishangtongguozhuanyongdewangzhashujujieshouqudongjieshouxinxibao，tiqushujuxinxi，bingjiangshujucunchuhuogengxindaozijinqiaoshishujukuzhong。jiyuzijinqiaoshishishujukugoujianchengdeMES、SIS和EMS等係統，在使用網閘時係統架構圖如下所示：