設(shè)計了基于工控機和高速模入板卡的數(shù)據(jù)采集系統(tǒng)，介紹了Windows 多任務(wù)多線程環(huán)境下，高速同步采集數(shù)據(jù)、存儲與處理數(shù)據(jù)的軟件設(shè)計方法。根據(jù)系統(tǒng)的特點， 采用半滿中斷方式實現(xiàn)數(shù)據(jù)采集傳輸；多線程技術(shù)使數(shù)據(jù)采集與數(shù)據(jù)處理相獨立，提高了數(shù)據(jù)吞吐量和計算機的整體處理能力；緩沖隊列實現(xiàn)了高速連續(xù)存盤而不丟點；動態(tài)虛擬技術(shù)實現(xiàn)線程高優(yōu)先級工作 。用這些方法開發(fā)出的軟件已成功應(yīng)用于風(fēng)機的故障檢測中，并取得了良好的效果。
關(guān)鍵詞： 高速數(shù)據(jù)采集; 軟件設(shè)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