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標題: 植物阻抗量測應用於蝴蝶蘭病徵檢測之初探
A Basic Study on Symptoms Detection of Phalaenopsis by Using Electrical Impedance Spectroscopy
作者: Guan-De Wu
Ting-Yi Chiu
Tse-Min Chen
關鍵字: Disease detection system;Noninvasive detection;Physiological reference curve;Botanical impedance measurement;植物病害檢測;非侵入式檢測法;生理參考曲線;植物阻抗量測
出版社: 臺中巿: 國立中興大學農學院
Project: 農林學報, Volume 63, Issue 1, Page(s) 65-73.

This research established a noninvasive disease detection system for Phalaenopsis. Since the input signals with distinct frequency result in different impedance spectrum as responses, the electrical impedance spectroscopy is an available index to describe the physiological status of botanic tissue. Therefore, employing the measured impedance trend to identify the disease-infected seedlings may be a prospective technique. Former literatures indicated that the electrical impedance of plants changed depended on different frequency spectroscopy and different physiological status, which is called desperation, Desperation depicts the characters of a specific species. If a botanic tissue such as Phalaenopsis is regarded as a system that contains input signal and response and when the input signal is fixed and the plant's structures have been changed, the response will change simultaneously. Thus the frequency spectroscopy of the impedance response of a plant illustrates the biological statues and may be referred as the physiological reference curve. This thesis employs the concept of the referred physiological reference curve of Phalaenopsis and the least square method to organize a novel noninvasive disease detection scheme for Phalaenopsis seedlings. Using the residuals of data from differen experiment days and their fitting transfer models, the Bold and Nyquist analysis validate the effectiveness of this detection system for Phalaenopsis. The limitations of check point value for the residual Bold model is 50 and for Nyquist model is 5. Beyond these check points the seedling is awarded to be infected.
Appears in Collections:第63卷 第01期

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