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
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，結交新朋友
；fenxiangzijideshenghuo，guanzhupengyoudejinkuang。zhezhongkuaisudexinxihuoquwojiaoliufangshi，zaibuduangaibianwomendeshenghuofangshidetongshi，yecushiwomenshengchanfangshiheguanlilinianbianhua。xianzaiwomendeqiyekeyijiangzongbuheyanfabumenshezaiyixiejishu
、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）等(deng)係(xi)統(tong)中(zhong)已(yi)經(jing)得(de)到(dao)廣(guang)泛(fan)應(ying)用(yong)。在(zai)這(zhe)裏(li)我(wo)們(men)不(bu)是(shi)想(xiang)討(tao)論(lun)如(ru)何(he)獲(huo)取(qu)這(zhe)些(xie)信(xin)息(xi)，如(ru)何(he)對(dui)這(zhe)些(xie)信(xin)息(xi)加(jia)工(gong)存(cun)儲(chu)，而(er)要(yao)討(tao)論(lun)的(de)是(shi)在(zai)獲(huo)取(qu)這(zhe)些(xie)信(xin)息(xi)時(shi)，生(sheng)產(chan)監(jian)控(kong)過(guo)程(cheng)的(de)安(an)全(quan)問(wen)題(ti)。而(er)前(qian)麵(mian)敘(xu)述(shu)的(de)內(nei)容(rong)也(ye)主(zhu)要(yao)是(shi)要(yao)說(shuo)明(ming)遠(yuan)程(cheng)生(sheng)產(chan)監(jian)控(kong)的(de)必(bi)需(xu)性(xing)和(he)重(zhong)要(yao)性(xing)，我(wo)們(men)不(bu)能(neng)因(yin)為(wei)有(you)安(an)全(quan)問(wen)題(ti)而(er)因(yin)噎(ye)廢(fei)食(shi)，而(er)應(ying)該(gai)積(ji)極(ji)解(jie)決(jue)問(wen)題(ti)。那(na)麼(me)我(wo)們(men)要(yao)討(tao)論(lun)的(de)安(an)全(quan)問(wen)題(ti)又(you)是(shi)什(shen)麼(me)呢(ne)？那(na)就(jiu)我(wo)們(men)將(jiang)一(yi)座(zuo)生(sheng)產(chan)廠(chang)或(huo)一(yi)個(ge)企(qi)業(ye)的(de)控(kong)製(zhi)係(xi)統(tong)與(yu)生(sheng)產(chan)管(guan)理(li)係(xi)統(tong)組(zu)成(cheng)一(yi)個(ge)信(xin)息(xi)管(guan)理(li)時(shi)，可(ke)能(neng)引(yin)起(qi)的(de)控(kong)製(zhi)係(xi)統(tong)安(an)全(quan)問(wen)題(ti)。

zaizaoqideshengchanqiyeguanlizhong，qiyedeguanlixitongyushengchankongzhixitongshixianghuduli。meitaoshengchankongzhixitongdoushiyigexinxigudao

，xitongshengchengdexinxizhinengzaixitongneibushiyong，tongyangduixitongxiadaderenhecaozuozhilingyeshizaixitongneibuwancheng。zaixiandaihuadeshengchanqiyezhong，tongguogoujianMES、SIS、EMS等(deng)係(xi)統(tong)，利(li)用(yong)計(ji)算(suan)機(ji)和(he)通(tong)訊(xun)技(ji)術(shu)將(jiang)生(sheng)產(chan)管(guan)理(li)係(xi)統(tong)與(yu)生(sheng)產(chan)控(kong)製(zhi)係(xi)統(tong)有(you)機(ji)地(di)結(jie)合(he)起(qi)來(lai)，從(cong)而(er)保(bao)證(zheng)信(xin)息(xi)獲(huo)取(qu)的(de)準(zhun)確(que)性(xing)和(he)及(ji)時(shi)性(xing)。而(er)這(zhe)種(zhong)結(jie)合(he)最(zui)初(chu)是(shi)基(ji)於(yu)開(kai)發(fa)的(de)、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、EMS等deng應ying用yong係xi統tong的de分fen析xi，在zai這zhe些xie應ying用yong中zhong在zai信xin息xi的de傳chuan輸shu方fang向xiang上shang，由you控kong製zhi係xi統tong傳chuan送song到dao這zhe些xie係xi統tong中zhong數shu據ju要yao求qiu數shu據ju準zhun確que度du比bi較jiao高gao，實shi效xiao性xing比bi較jiao強qiang，數shu據ju量liang非fei常chang大da；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）tourudeyiyouxiaoliyong
，houqituozhanfeiyongbuhuitaigao。dangqianshixianzhemubiaochangyongdeshebeijiushiwangzha。wangzhatongchangyouneiwailianggechulidanyuanhegeliyujiaohuandanyuanzucheng，xinxizaiwangzhaliangduanchuansongshiyoulianggechulidanyuanduliwanchengde。zaixinxichanshengduan
，zhiyoumanzuciduanjieshoucelvedexinxi，cainengbeifangzhidaogeliyujiaohuandanyuanzhong；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：