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題名 | 數位電腦輔助熱絲流速儀紊流量測 |
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作 者 | 蕭葆羲; | 書刊名 | 技術學刊 |
卷期 | 1:1 1986.09[民75.09] |
頁次 | 頁61-70 |
分類號 | 330 |
關鍵詞 | 紊流量測; 數位電腦; 熱絲流速儀; |
語文 | 中文(Chinese) |
中文摘要 | 本文旨在應用數位電腦線上操作控制處理熱絲流速儀,量測大氣環境風洞中之各類紊流流場特性。將DISA熱絲流速儀,ANALOG 14 Bit類比數位轉換器及PDP-H/23 plus數位電腦連線,利用自行設立發展之軟體程式線上 控制風洞中紊流之量測及量測數接資料之處理。首先將熱絲感應流場中之變化,透過熱絲、流速儀之平衡電橋輸出類比訊號,再經由類比數位轉換器轉換為數位訊號,以DMA技巧直接存入磁碟中儲存。採樣頻率,時間均於終端機操作控制,探樣之數據資料亦於終端機操作執行自行發展之各類紊流數接資料處理程式,以進行分析儲放於磁碟中之數據,處理完畢將流場之紊流之平均特性結果印出,語系統經實際應用測試結果良好,誠為風洞中紊流量測之方便可靠之工具。 |
英文摘要 | A DISA hot- wire anemometer, an ANDS-5400 14 bit A/D converter and a PDP-ll/23 plus minicomputer were assembled for turbulence measurements. The turbulent flow was first detected by the hot-wire anemometer, then the analog signal output from the anemometer was converted into digital form by the A/D converter, and using DMA skill, all the digital data was stored in the hard disk which had 10.4 MB capacity. The operation of the system and digital data processing was done by computer automatically under program instructions which were developed most1y by author himself. The system has been applied successfully for turbulence measurement in the Atmospheric Environment Wind Tunnel at the Institute of Physics, Academia Sinica. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。