The Study of Precision Cultivation and Traceability System for Seedling Production in Greenhouses Using RFID Technology
Date Issued
2008
Date
2008
Author(s)
Lin, Hui-Mei
Abstract
Precision cultivation and multi-function monitoring system for seedling production in greenhouses using Radio Frequency Identification (RFID) technology was used to develop the crop production traceability system in greenhouses. Multi-spectral images with plant-oriented sensing algorithm were measured by remote sensing. To avoid the situations of over-exposure when images were captured, an amended automatic exposure algorithm for camera shutter and gain control was conducted; the result of the performance test indicated not only time saving of approximately 44.44% ~ 71.55%, but also an increased system efficiency and stability. The operation interface was simplified using LabVIEW software, and furthermore, the algorithm was improved by a rate of image processing about 7 times. The irrigation policies for seedlings were established according to the multi-imaging-based calculated NDVI and LAI spatial variations. Besides, the study explored the applications of the passive RFID system in the greenhouse. Regarding the performance test, the best relative distance and angle were 22.5 cm and 56 degree respectively. The study aims to construct a traceability system for seedling production in greenhouses using RFID technology. The contents of the database were divided into two parts, management traceability system and environment traceability system. The traceability system provides the operators with records of seedling growth and management history, that were served as the decision bases for spray and related operations. A tag represented a division of seedlings, in which operations would be taken according to the local circumstances. The traceability system developed in this study is the first application of RFID technology to the greenhouse production.
Subjects
Radio Frequency Identification (RFID)
Precision Cultivation
Traceability System
Type
thesis
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