6ES7 222-1BD22-0XA0
6ES7 222-1BD22-0XA0
6ES7 222-1BD22-0XA0
6ES7 222-1BD22-0XA0
由于裝置和集輸計量現(xiàn)場監(jiān)控系統(tǒng)安裝的時間不同，裝置和儀表類型的不同，所以底層采用的軟件環(huán)境也不同，為了能夠將不同軟件環(huán)境采集的數(shù)據(jù)存儲到同一個數(shù)據(jù)庫環(huán)境中，系統(tǒng)使用了相對成熟穩(wěn)定的紫金橋組態(tài)軟件，作為上位機工作站上層和公司中心服務器端的軟件開發(fā)環(huán)境。
2.3安全措施
該系統(tǒng)是一個龐大的生產運營監(jiān)測管理系統(tǒng)，在保證系統(tǒng)具有強大功能的同時，更要保證系統(tǒng)的安全性，因為上位機若遭到病毒或黑客的攻擊，不但數(shù)采監(jiān)控傳輸功能被破壞，嚴重的會造成裝置停機等生產事故，由于網絡的復雜性，我們進行了如下的安全保護設計：
2.3.1系統(tǒng)抗病毒能力設計
采用網絡版防病毒軟件來保護網絡操作系統(tǒng)安全運行，建立嚴格的網絡安全機制（包括防火墻技術、虛擬網絡技術）對系統(tǒng)病毒的傳播有抑制作用。
2.3.2網絡系統(tǒng)安全設計
為維護網絡系統(tǒng)安全在無線網與油田局域網之間加入硬件防火墻加以防范，主要采用VLAN劃分子網和防火墻技術。
公司網絡內部，用戶訪問互聯(lián)或外部用戶通過互聯(lián)網訪問本系統(tǒng)時采用防火墻軟件來有效地防止“黑客”訪問，防止信息流失和整個信息系統(tǒng)遭到破壞。另外代理服務器PROXY SERVER也提供了可擴展的防火墻安全特性，使網絡系統(tǒng)被他人入侵時能及時采取措施[5]。
2.3.3信息查詢安全設計
由于天然氣生產和集輸系統(tǒng)有很多信息需要保密，所以在服務器層開發(fā)時，根據(jù)天然氣管理的要求，按著用戶的級別和權限，設定不同的、唯一的密碼。不同級別的用戶只能訪問與其級別相適應的網絡資源和數(shù)據(jù)、圖形信息。
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