3波長の近赤外半導体レーザーを用いた果実糖度の非破壊計測手法の開発

• 下村 義昭

  長崎県工業技術センター

• 岡田 龍雄

  九州大学大学院システム情報科学研究院

書誌事項

タイトル別名

• Development of Nondestructive Measurement Technique for Fruits Sugar Content with Near-Infrared Laser Diodes Operating at Three Different Wavelengths
• 3 ハチョウ ノ キンセキガイ ハンドウタイ レーザー オ モチイタ カジツ トウド ノ ヒハカイ ケイソク シュホウ ノ カイハツ

抄録

A new measurement technique based on three near-infrared laser diodes is proposed for non-destructive evaluation of sugar content in fruits. A parameter γ, which is independent of the optical path length is considered, such that γ=ln (R_i/R_k)/ln (R_i/R_k), where the values of reflectance R_{i, j, k} represent the ratio of values of diffuseli ght power reaching to two receiving fibers corresponding to different wavelengths λi, j, k.Based on a simulation with a modeled-apple, it was found that there are optimum combinations among three wavelengths for which the correlation between the parameter γ and the sugar content of fruit becomes sufficiently high. The sugar content of apples was also measured experimentally with an accuracy of 0.63 Brix, by employing three laser diodes with wavelengths of 911, 936 and 1055 nm. The measurements clearly show the usefulness of the proposed technique.

収録刊行物

• レーザー研究

  レーザー研究 33 (9), 620-625, 2005

  一般社団法人 レーザー学会

キーワード

• Sugar content
• Fruits
• Near-infrared
• Laser diode
• Diffusion theory

詳細情報

• CRID: 1390001204646705024
• NII論文ID: 130004465609
• NII書誌ID: AN00255326
• DOI: 10.2184/lsj.33.620
• COI: 1:CAS:528:DC%2BD2MXhtF2ns7jJ
• ISSN: 13496603
• ISSN: 03870200
• NDL書誌ID: 7484992
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7484992
• Web Site: https://www.jstage.jst.go.jp/article/lsj/33/9/33_620/_pdf
• 本文言語コード: ja
• データソース種別:
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• 抄録ライセンスフラグ: 使用不可