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題 名 | Study on Common Color Indices for Tomato and Citrus Sorting=番茄與柑橘共用型顏色選別指標之研究 |
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作 者 | 陳世銘; 馮丁樹; 張家禎; | 書刊名 | 農業機械學刊 |
卷 期 | 4:4 1995.12[民84.12] |
頁 次 | 頁47-57 |
分類號 | 434.25 |
關鍵詞 | 水果; 成熟度; 顏色選別; 共用指標; Fruits; Maturity; Color sorting; Common index; |
語 文 | 英文(English) |
中文摘要 | 水果之成熟度與其果皮之顏色甚為相關,因此可將果皮之顏色作為成熟分絹之依據。大部果成熟時,其果皮顏色由綠色轉變為黃色或紅色,因此藉由此兩類水果果皮光學反射性質之,可以建立水果成熟度之泛用選別指標。本研究以椪柑及番茄作為此兩類水獰之代表,首先將水果分成黃、綠(或紅、綠)兩個族群,然後取定量之樣本,以分光光度計測量其在可見光侑紅外光光譜範圍(400至2400nm)之反射值。所測得之反射?數據每隔10nm以本研究在於分析插怏機之橢圓齒輪式插植機構的運動。此插植機構係由5個橢齒輪所構成之行星齒輪系;其中插植爪設在曘外側之齒輪軸心上,因此插植爪端點之運動軌跡略呈扁圓形,如此之軌跡可以滿足插植作業所需。首先利用反平行四邊形之理論,推導出輪系臂與最外側齒輪兩者旋轉角度之關係,以及插植爪端點運動軌跡之方程式,根據此推導結果取得位於最外側齒輪長軸上節點之運動軌跡,所得結果與文獻所載一致。另外,更進一步模擬插植爪於靜態中以及在600mm/sec機體行進速度下之運動軌跡,此一部份之結果亦可以提供日後插本機構設計之參考。 RS-232傳至IBM個人電腦,然後再傳至VAX電腦進行統計分析。由單波長及雙波長組成之五種指標模式共有80601種可能之選擇。統計皆析即以馬氏距離之大小決定各種指標選別能力之排序名再經由分析比對此兩類水果之排名及其相對應之選別指標,即可找出能適用於此兩類水果之共用型顏色選別指標。本研究已發展出一套以光譜反射、五種指標模式、馬氏距離以及比對分析等步驟之推求泛用型顏色選別指標之標準方法。針對椪柑及番茄,此兩種水獰之最佳共用型顏色選別指標之其中三個為(R650-R980)/R980,(R660-R820)/R820以及(R650-R780)/R780,此求得之共用型指標將有助於泛用型水果顏色選別機之設計與開發。 |
英文摘要 | The surface color of fruits is closely related to the maturity, and thus can be used as an important criterion for maturity sorting operations. Since the surface color of most fruits turns from green to either yellow or red when they mature, the investigation of surface reflectance characteristics of these two groups of fruits would provide useful information on developing universal color indices for maturity evaluations. In this study, Ponkan mandarins and Green Shoulder tomatoes were selected to represent these two groups of fruits. Specimens from yellow-green (or red-green) color categories were measured in the reflectance spectrum range from 400 to 2400 nm by a spectrophotometer. The experimental reflectance data were transmitted to an IBM personal computer through RS-232 at a rate of one data per 10 nm of wavelength interval, and then uploaded to a VAX computer for statistical analyses. Five types of color uality indices which consisted of single wavelength or dual wavelengths and 80601 lists of indices according to their sorting abilities. After comparing and analyzing the rank lists, common color sorting indices for two groups of fruits were obtained. In this study, a standard procedure was successfully developed to set up universal color sorting indices. For Ponkan and tomato, some of the best common color indices developed in this study are (R650-R980)/R980, (R660-R820)/R820 and (R620-R780)/R780. these common color indices would definitely make the design of universal color sorters possible. |
本系統中英文摘要資訊取自各篇刊載內容。