在本軟件設計中，開發平臺采用WindowsNT。為保證系統的實時性和可靠性，充分利用匯編語言實時功能強，而高級語言運算能力強的優點，采用MSVB5.0和8088匯編語言混合編程方式。匯編語言執行速度快，且能有效地控制硬件，因此，采用匯編語言子程序來完成數據采集、通信等工作。利用高級語言來完成上位機的數據處理、顯示、打印等工作。

廈門岳航計算機工程有限公司

聯系人：李素云

企業QQ：2851195446，2851195466

手機：18965423501

座機：0592-5165501

整個軟件系統由四部分組成，即網絡初始化程序，數據采集程序，數據通信程序，數據處理與管理程序，各子程序采用模塊化設計。

3.1 網絡初始化程序

網絡初始化程序對網絡進行初始化，設置網絡、網卡(通信適配卡)和采集前端機的工作方式，確定網卡是否允許越限中斷，是否允許事件中斷，是否自動查詢前端，選擇網絡工作方式：循環或主從方式。給各主機的工作方式：只聽或聽講。對閃端采集機的工作模式、采樣周期、通道個數等進行設定。

3.2 數據采集程序

數據采集程序用于現場采樣，裝配在采集站中。生產過程的信號有模擬量和數字量兩類。數字量包括開關量和脈沖量二種。開關量有掃描型和中斷型之分。對不同的實時檢測點設計成相應的數據采集軟件，分別完成從相關設備采集相關的數據，進行預處理以組織成供通信軟件傳送的格式。

3.3 數據通信參數

數據通信程序由數據發送模塊和接收模塊構成。它實際上是單片機之間的(通信適配卡與采集站都是以單片機為核心構成的)通信。通信適配卡發送上位機對采集站的命令;接收采集站的實時數據，供上位機調用。

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