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| 題 名 | 加工梅子光電式選別機之研製 |
|---|---|
| 作 者 | 魏賢卿; 楊進添; | 書刊名 | 農業工程學報 |
| 卷 期 | 35:4 1989.12[民78.12] |
| 頁 次 | 頁112-122 |
| 分類號 | 434.251 |
| 關鍵詞 | 加工; 光電式; 梅子; 選別機; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 一種以褐斑梅為檢出對象之自動選別裝置於本研究中加以分析探討,它結合集光鏡系、光二極體線列、及電子式判定選別器於一體,其利用集光鏡片將梅子樣品之表面狀況成像、集光於光二極體線列上,其中並設計光欄以控制入射之光線,同時使用一系列之電子元件構成窗口比較器、班斑計數器、數位類比轉換器、比電壓轉換器、階位判定器來判定梅子樣品之良莠,再由噴槍將不良品檢出。 研究結果顯示,以1:1反像集光、成像,以黃色發光二極體為光源(49lux)、光二極體線列掃描頻率62.5KHz條件下,褐斑梅於輸送帶上之檢出能力為每小時144公斤(平均樣品重量5公克)。 本研究同時探討鹽醃梅表面之光反射特性,結果顯示於波長530-590nm選別正常梅和初斑梅之可靠度在97%以上(α<0.015)。 |
| 英文摘要 | The sorting of scabbed salted prunes (Prunes mume Sieb. et Zucc.) is a difficult and laborious work in the processing of prepared prunes. Approximately 30 percent cost of prepared prunes accounted for labour. Automatic sorting of the scabbed prunes would greatly reduce the cost of the prepared prunes. Optical reflectance proerties of salted prunes, including normal and scabbed ones, were studied by ORIEL’s fiber optic spectral system. The detected area was enlarged to 10 times by microsope to sense the small scabbed spot by photomultiplier. The data indicated that the reflectance of surface the spectral range from 530 nm to 590 nm were most efficient for identifying the scabbed the scabbed spot from normal samples. This study developed a prototype conveyer sorter which contains a variable speed conveyer, sensing and lighting house, identifying and quantitative deice, and ejector controller. A 35-elements silicon P-N junction photodiode array was used as used as sensing device which focused by a 2-lense type minus invasive focus device to detect the sample on the conveyer. A ringed LED was used as a light source which isolates the deviation of the reflectance of the salted prunes. The quantitative device composed of binary counter, digital to analog converter, analog to digital divider, and level detector. The ejector controller controls the delay time and duration time of the ejector to eject the unacceptable prunes exactly. The results shows that, under a conveyer speed at 244 mm. per second, illumination at 49 Lux, sample feeding pitch 30 mm., and 62.5 KHz scanning frepucy, the capacity of the sorter is approximately 144Kg. per hour for prunes which an average weight of 5 gram. |
本系統中英文摘要資訊取自各篇刊載內容。