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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Biosystems Engineering
Journal Basic Information
Journal DOI :
Korean Society for Agricultural Machinery
Editor in Chief :
Volume & Issues
Volume 18, Issue 4 - Dec 1993
Volume 18, Issue 3 - Sep 1993
Volume 18, Issue 2 - Jun 1993
Volume 18, Issue 1 - Mar 1993
Selecting the target year
Development of A Computer Simulation Program for the Design of High Speed Transplanting Mechanism(I) -Planting Loci and Motion Analysis-
Park, H.J. ; Kim, K.U. ;
Journal of Biosystems Engineering, volume 18, issue 2, 1993, Pages 91~99
Kinematic analysis was made on a gear type high speed planting mechanism for riding-type rice transplanters. The kinematic equations thus derived were computer coded to simulate its motion characteristics such as a planting locus, velocities and accelerations of gears and planting knife, etc. Using the simulation program a sensitivity analysis of design parameters was also carried out to determine their effects on the planting performance. Of the design parameters the eccentricity of the gear was found most influential.
Study on the Structures of the Nozzle for the Spray
Lee, S.W. ;
Journal of Biosystems Engineering, volume 18, issue 2, 1993, Pages 100~109
The aim of this study was to provide the reasonable data for design of the nozzle which produces finer droplets on the same level of the effective travel distance or which transports droplets to the farther target on the reasonable atomization in comparison with the commercial nozzles being used much in Korean rural areas. Newly designed twin-fluid atomizers with some commercial nozzles were tested in this study, and their results were as follows : 1. The characteristics of the spray deposit distribution of No.1 nozzles for farther target were nearly same in the near or nearer travel distance less than 8m. Therefore it was reasonable to combine the characteristics of the spray deposit distributions of No.2 and No.3 nozzles to those of No.1 nozzle. 2. The effective travel distance was increased with increase of the sectional area of the jet ligament, and the maximum effective travel distance was reached to about 17m. 3. The droplet size was increased with increase of the sectional area of the jet ligament, and the maximum droplet size was produced in the front of the point of the maximum spray deposit distribution. 4. The atomization was excellent in the twin-fluid atomizer in comparison with the hydraulic atomizer and also the effective travel distances were nearly same level in both atomizers.
A Fundamental Study for Development of a Pepper Harvester
Lee, C.H. ; Park, S.J. ; Kim, C.S. ; Rhee, J.Y. ; Kim, Y.H. ;
Journal of Biosystems Engineering, volume 18, issue 2, 1993, Pages 110~121
Pepper has been the second important income source of Korean farmer. Provided the agricultural market in Korea is opened, pepper of which price is more than three times of the world market price can not survive with current cultivation practice. Pepper harvesters have been developed in some countries but, they are not feasible in Korea due to difference of varieties, cultivation practice and climate between Korea and other countries. This is a fundamental study to develop a pepper harvester suitable to the current situation in Korea. Physical properties of a pepper plant and its fruit were investigated. Also, a pair of open helices was selected as a pepper removing mechanism and tested to determine the best operating conditions. This study revealed that a pepper harvester with more than 90% of pepper recovery is attainable. Best rotating speed of open helices with 30cm diameter and conveying velocity of pepper main stem were determined to be 180 rpm and 0.1 m/s respectively.
Effects of Freeze Dry Control Parameters on the Sublimation Drying Time of Garlic paste
Park, N.H. ; Bae, S.C. ;
Journal of Biosystems Engineering, volume 18, issue 2, 1993, Pages 122~132
Effects of physical properties of garlic paste and freeze dry control parameters on the sublimation drying time were investigated to verify optimal operating method in freeze drying. A mathematical model of freeze drying by sublimation was suggested and used to estimate the drying time of garlic paste. Under various conditions, the drying time of garlic paste was calculated using the computer program for the suggested model. Among the physical properties of garlic paste, melting temperature was evaluated the most important factor in affecting the drying time. In supplying methods of the required heat energy for sublimation, it would be the best way to control the upper plate temperature and the lower plate temperature independently.
Development of User-Interfaces for Expert System Using CLIPS
Cho, S.I. ; Kim, S.C. ;
Journal of Biosystems Engineering, volume 18, issue 2, 1993, Pages 133~143
In developing an Expert System(ES), there are two ways. One is to develop an ES using AI(artificial Intelligence) languages and another using ES-development tools. CLIPS is an ES-development tool and has a powerful inference engine in it. Using the tool like CLIPS, knowledge engineer can concentrate on constructing a knowledge base without wasting time in developing an inference engine. However, CLIPS is lack of user-friendly interfaces for both knowledge enginners and users. Because CLIPS was developed in USA, it can not afford to use Korean language. Therefore, several user-friendly interfaces including hmenu, htille, hpcxdisplay were develpoed and added to CLIPS. CLIPS with the interfaces is called HCLIPS(Hangul CLIPS) in this paper. HCLIPS provides a new I/O device to be utilized for expert systems in Korean. HCLIPS can be efficiently used for developing expert systems in agriculture and consulting farmers interactively who are not familiar with computer programming and ES itself.
The Effect of Thermal Buoyancy on Air Flow and Temperature Distribution in a Slot-Ventilated Livestock Building
Choi, H.L. ;
Journal of Biosystems Engineering, volume 18, issue 2, 1993, Pages 144~157
Jeong, Jong-Hun ;
Journal of Biosystems Engineering, volume 18, issue 2, 1993, Pages 158~177