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12-19-2018 07:27 PM - 已編輯 12-19-2018 07:29 PM
各位LV工程師好:如題 我將一個TDMS 2D矩陣讀取後再用濾波器濾波而原本的值是一個尚未濾波的電壓值但是為何會濾波失敗呢?該如何把一個TDMS 2D矩陣經由濾波後變為一個新的矩陣再輸出呢?謝謝如下圖所示
在 12-19-2018 08:14 PM
補充我如果把DAQ讀取到的數值,直接濾波而不是轉成TDMS檔案,再讀取後濾波是可以濾波的
在 12-20-2018 07:57 PM
您好,
濾波器需要知道dt(取樣點之間的時間秒數)。因此,可以添加一個創建波形vi(Build Waveform),將原本尚未濾波的電壓值配置為波形,如下圖所示。然後指定dt,再把生成的波形連接至濾波器。
12-21-2018 12:04 AM - 已編輯 12-21-2018 12:12 AM
你好 我原本程式為下圖
之後改為下面這樣 因為我DAQ的rate為2kHZ
結果出現"函數調用的參數或參數無效"
在 12-22-2018 12:36 AM
你好,或許你可以參考以下網址https://forums.ni.com/t5/LabVIEW/Error-4-at-TDMS-Read-VI-in-Labview-2014/td-p/3113766
抑或附上完整的程式碼,我幫你看看。
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