OPC 歷史數(shù)據(jù)存取規(guī)范基于COM，要將其移植到.NET 平臺，需要解決編排過程中
數(shù)據(jù)類型轉(zhuǎn)換、接口實現(xiàn)、參數(shù)傳遞等問題。研究C#接口屬性類、.NET 托管和非托管的轉(zhuǎn)換后，解決了OPC 歷史數(shù)據(jù)存取規(guī)范1.2 定制接口COM 編排的問題。利用研究成果，能將工業(yè)過程自動化系統(tǒng)中產(chǎn)生的歷史數(shù)據(jù)抽取出來，形成數(shù)據(jù)倉庫。關(guān)鍵詞：COM 編排；OPC 歷史數(shù)據(jù)；定制接口；.NET
中圖分類號：TP311.5 文獻標(biāo)識碼：A
Abstract: OPC historical data access specification is based on COM, the problem such as the data type transform, interface implementation, argument pass must be handled when it migrate to .NET platform. The problem of COM marshalling OPC historical data access specification version 1.2 is solved after the C# attributes class of interface and the transform of .NET managed and unmanaged have been studied. The data warehouse can be constructed by extracting the historical data from the industrial process automation system followed the paper.
Key Words: COM marshal; OPC historical data; custom interface;.NET