設計了基于工控機和高速模入板卡的數據采集系統，介紹了Windows 多任務多線程環境下，高速同步采集數據、存儲與處理數據的軟件設計方法。根據系統的特點， 采用半滿中斷方式實現數據采集傳輸；多線程技術使數據采集與數據處理相獨立，提高了數據吞吐量和計算機的整體處理能力；緩沖隊列實現了高速連續存盤而不丟點；動態虛擬技術實現線程高優先級工作 。用這些方法開發出的軟件已成功應用于風機的故障檢測中，并取得了良好的效果。
關鍵詞： 高速數據采集; 軟件設計; 故障檢測
Abstract A data acquisition system based on industrial control computer and high-speed
acquisition card is designed. Some software design technique are introduced in the process of
high-speed data acquisition, data storage and data processing in the multitask and multi-thread environment of Windows. According to system's feature, half-interruption method is used to collect and transfer data. Multithread is designed to make data transmission and data processing separate, thus enhance computer's process. Buffer is used to high-speed and continuous data storage. VxD technique is adopted to elevate process priority. The designed software has been used in failure testing, and its performance is very good.
Keywords: High-speed data acquisition ； software design ； failure testing