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김치생산용 알타리무 전처리 가공시스템 개발(I) - 무청·뿌리끝부 절단장치 -
민영봉,김성태,강동현,정태상,나우정,Min Y.B.,Kim S.T.,Kang D.H.,Chung T.S.,La W.J. 한국농업기계학회 2004 바이오시스템공학 Vol.29 No.5
To establish a Altari radish pre-processing system far kimchi, the leaves and root tail of the Altari radish cutting de-vices were developed. The cutting resistances depend on the edge angles, oblique angles and cutting speeds were measured and analyzed. The experiments were performed to reveal the optimal conditions that showed the minimum cutting resistances acting on the materials. As the results, the optimum conditions that acting on the leaves were at edge angle $25^{\circ}$, oblique angle $40^{\circ}$ and cutting speed 0.5 m/s, and those acting on the root tails were at edge angle $20^{\circ}$, oblique angle $30^{\circ}$ and cutting speed 0.5 m/s, respectively. Considered a safety conception, the oblique angle of the leaves cutting device was adjusted as $20^{\circ}$, and then the cutting efficiencies of the both devices at these conditions were showed perfect performances.
김치생산용 알타리무 전처리가공시스템 개발(II) - 평면형 삭피칼날의 최적형상 -
민영봉,김성태,강동현,Min Y. B.,Kim S. T.,Kang D. H. 한국농업기계학회 2005 바이오시스템공학 Vol.30 No.3
In this study, peeling test of the Altari radish on kimchi pre-processing system for mechanization was performed with the longitudinal plane peeling type with wider cutting blade than that of the peeled chip's. To determine the optimum cutter shape to match this plane peeling type, the peeling tests depending on variable cutting speed, rake angle and blade angle using the blade with thickness as 2 m and width as 50mm were performed, and the patterns of the peeled chips and peeling resistances were investigated. As the result of the tests, the rake angle of the blade with clean peeled surface of the Altari radish was over $45^{\circ}$, and the blade angle and rake angle with the minimum peeling resistance was $20^{\circ}\;and\;60^{\circ}$, respectively. The optimum peeling conditions were; the peeling speed 0.2m/s, blade angle $20^{\circ}$ and the rake angle $60^{\circ}$, and the peeling resistance of each blade was 15 N.
마이크로 컴퓨터를 이용(利用)한 엔진성능(性能) 측정장치(測定裝置) (I)
민영봉,김용환,이기명,허승도,Min, Y.B.,Kim, Y.H.,Lee, K.M.,Huh, S.D. 한국농업기계학회 1986 바이오시스템공학 Vol.11 No.1
In order to collect the engine performance data accurately, rapidly and reliabily, the microcomputer-based engine performance test system was developed and tested. The system measures engine shaft torque and speed, fuel consumption, exhaust gas temperature, engine shaft power and fuel consumption ratio. The system consisted of 32 channels 8 bit A/D converter, time clock, dynamic strain amplifier and signal conditioning circuits to amplify and filter the electrical signal from transducers. Most of transducers were devised for low cost, easy setting and self-manufacturing. The system has been installed on a small kerosene engine (DAEDONG NA50B).
김치생산용 알타리무 전처리가공시스템 개발 (IV) - 시작기의 자동화와 평가 -
민영봉,김성태,정태상,강동현,문성원,Min Y.B.,Kim S.T.,Chung T.S.,Kang D.H.,Moon S.W. 한국농업기계학회 2006 바이오시스템공학 Vol.31 No.2
An Altari radish pre-processing system, which feasible to process automatically such operations as leaf and root tail cutting and root peeling, for kimchi production was accomplished based on the foregone serial studies. In this study, the performances of the developed prototype machine, considered as a commercializing level, were analyzed and evaluated. The prototype machine attached Tiny PLC automatic control system was performed the sequent function as the rate of successful peeling was more than 98% for the Altari radish less than 70 mm diameter of a radish. The operating efficiency of this was 9 see/each, 128 kg/h, and it means as much as $5{\sim}6$ times that of a woman labor's. The sanitation and taste of the mechanized-processed Altari radish kimchi was almost same as that of the handmade. And they were suitable for manufactory of kimchi as the both short term ripening and storing kimchi. Developed machinery with one peeling device and two peeling devices that compared with hand processing, it was analyzed that the break-even yearly working days were 28 days and 19 days, and the break-even yearly processing amount were 28,700 kg, 32,400 kg, respectively.