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頁籤選單縮合
題 名 | 近紅外線穀物水份計量測性能之研究 |
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作 者 | 陳加忠; 曹之祖; 雷鵬魁; | 書刊名 | 農業工程學報 |
卷 期 | 41:3 1995.09[民84.09] |
頁 次 | 頁86-97 |
分類號 | 434.251 |
關鍵詞 | 穀物; 含水率; 近紅外線; Grain; Moisture content; Near-infrared ray; |
語 文 | 中文(Chinese) |
中文摘要 | 此研究用以評估商品化近紅外線穀物水份計應用於國內穀物含水率之量測性能。稻穀樣本包括不同品種與不同收穫時期。並以迴歸技術建立樣本含水率與近紅外線吸收率之關係方程式。以特定之方程式比較不同作業條件對量測準確性之影響。研究結果顯示稻穀水份含量對近紅外線的吸收能力有其適用範圍特性,對高於30%含水率之樣本,吸收率變異極大。玉米粒內部水份對近紅外線之吸收能力之量測比稻穀有更大的誤差特性。以稻穀含水率與近紅外光吸收率之關係所建立之最佳方程式為以含水率對數轉換值為自變數之二項次方程式。品種與收穫年代對近紅外光吸收率之影響有顯著差異。以同一作業條件下(相同品種與收穫年代)所建立之應用公式進行稻穀含水率量測之誤差值在1.0%之內,符合實用性要求。應用此近紅外線含水率量測技術,每一特定條件下之穀物必需建立其特定方程式。 |
英文摘要 | The performance of a commercialized NIR grain moisture meter was studied to evaluate the adequateness of local varieties planted in Taiwan. The samples included different varieties and harvest years. The relationships between moisture content and NIR absorptance were established by regression technique. The adequate equation was adopted to compare the effect of the different sample conditions on the performance of accuracy. The results indicated that the adequate measuring range for grains was within 30%. Higher moisture samples had the larger variance of measurement then affect the precision of this meter. The best equation for the absorptance is the polynomial function of indepentant variable with the logarithm form of moisture content. The grain's varieties and harvest years had the significant effect on the performance. At the same condition of variety and harvest year, the accuracy of the NIR meter that obtained by transforming the adsoptance to moisture content is within 1%. To ensure the performance of NIR moisture, each special grain must establish its specific calibration equation. |
本系統中英文摘要資訊取自各篇刊載內容。