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논문 : 정보처리 및 복합기술 ; 유비쿼터스 센서네트워크를 이용한 농업환경인자 측정 -온도, 습도, 조도-
장영창 ( Y. C. Chang ),정선옥 ( S. O. Chung ),한인송 ( I. S. Han ),노광모 ( K. M. Noh ) 한국농업기계학회 2011 바이오시스템공학 Vol.36 No.2
This study was performed to develop a wireless system for measuring agricultural atmospheric factors using ubiquitous sensor network(USN). In the study, temperature, humidity and light intensity were selected and evaluated as major agricultural atmospheric factors. An USN system was designed and implemented by using Zigbex I and II (mote sensor nodes of MICA series) provided by Hanback Electronics, Korea. The system was tested in a greenhouse and an orchard. The experiment results showed that the suggested USN measuring system would be very effective on comprehensive measurement of the selected factors on the basis of time, day, spatial sequence with reasonable costs.
습식 마늘박피 시스템 개발 (IV) - 상업용 시스템의 구조와 성능 -
배영환,양규원,백성기,김정호,장영창,이수희,Bae Y. H.,Yang K. W.,Baik S. K.,Kim J.,Chang Y. C.,Lee S. H. 한국농업기계학회 2005 바이오시스템공학 Vol.30 No.1
There are more than three hundred garlic peeling facilities in Korea and most of them use pressurized air for skin peeling operation. One of the major problems of using air for the peeling operation is the occurrence of excessive bruises on the flesh of peeled garlic which causes easy microbial contamination and shortening of the shelf lift. To reduce the occurrence of bruises during the peeling operation, a new type of garlic peeling system was developed which use pressurized water. In this system, high pressure water jets were used to separate garlic bulbs and to peel the skin of garlic cloves. Six commercial systems of this type had been developed and installed at several locations in Korea. The design and performance of the latest system according to three pressure levels were described in this paper. Peeling efficiency of the system was as high as $64.7\%$ in one cycle of peeling operation by three chambers installed in series. Incorporation of a sorting system based on machine vision and re-circulation of unpeeled and partially-peeled garlic enhanced peeling efficiency by additional $30\%$, resulting in total peeling efficiency of the final products of approximately $95\%$. Peeling capacity of the system was over 400 kg per hour.