시설하우스 부추재배 기계화 기술

전현종 韓國施設園藝硏究會 2000 施設園藝硏究 Vol.13 No.2

Development of a Belt Pick-up Type Two-row Sesame Reaper

전현종,최일수,강태경,김영근,이상희,김성우,최용,최덕규,이정근 한국농업기계학회 2016 바이오시스템공학 Vol.41 No.4

Purpose: The purpose of this study is to develop a walking-type two-row sesame reaper, which can simultaneously perform thecutting and collecting of sesame plants and other crops like perilla and soybean. Methods: The factors involved in reapingsesame were determined experimentally in order to design a prototype of the sesame reaper. The prototype is made up offour parts for cutting, conveying, collecting, and running. The height of two disc-plate saw blades on the cutting part isadjusted by an adjusting wheel, and peripheral speed is adjusted in accordance with the running speed. The conveying beltof the conveying part can be tilted from 0° to 90°. The collecting part extracts a predetermined amount of transferredsesame plants. The prototype was used to evaluate the performance at different working speeds, so that the work efficiencycan be calculated. Results: The center of gravity of the sesame plants was 900 mm, measured from the end of the cut stem. The diameter of the disc-plate saw blade was determined to be 355 mm, peripheral speed was 20.4–32.7 m/s, and thepicking height of the conveying belt for sesame was 130 mm. The performance of transfer and collection of the sesame,when the insertion angles were 60° and 90°, proved to be excellent. However, when the angle was over 120°, theperformance was only 75-80%. The performance was at 100% efficiency when the ratio between running speed andconveying belt speed of the prototype was 1:2, which seems to be the ideal ratio for the sesame reaper. Conclusions: Asesame reaper was developed, which can integrate the processes of cutting, conveying, and collecting, by investigating andconsidering various factors involved in the reaping process. The sesame reaper can reduce the costs for yielding andproducing sesame due to its highly efficient performance.

Development of a Crawler Type Vehicle to Travel in Water Paddy Rice Field for Water-Dropwort Harvest

전현종,강태경,최용,최일수,최덕규,이정근 한국농업기계학회 2013 바이오시스템공학 Vol.38 No.4

Purpose: This study was conducted to develop a rubber-crawler type vehicle as a traveling device for harvesting water-dropwort cultivated in water contained paddy rice field in winter season. Methods: A commercial rubber-crawler type vehicle was used to investigate application of rubber crawler to the paddy rice field as preliminary test. As the result of the preliminary test, a both prototype traveling device with rubber crawlers for a water-dropwort harvest was designed with inclination of 45° at the front-end and rear-end of crawler under the basic water depth of 0.6 m in the paddy rice field. The device was fabricated and attached to the experimental harvesting test devices on the front of the prototype vehicle. The size of the prototype crawler vehicle with a harvesting part is 2,800 x 1,460 x 1,040 (mm) (LxWxH) with weight of 9.21kN (maximum). Sizes of the crawler of prototype vehicle are ground contact length of 900 mm, width of 180 mm, height of 1,070 mm and distance between center to center of crawlers of 720 mm. The side-overturn angle of the prototype was 26.4°. Results: Driving performance of the prototype vehicle in water contained paddy field were good at both forward and reverse (backward) directions as weights were applied. The drawbar pull and the maximum sinking depth of the prototype vehicle were 3.5 kN and 0.13 m respectively at water depth of 0.5 m, when the weight and bearing capacity of the prototype rubber crawler in the paddy field were 8.51 kN and 26.3 kN/m2, respectively. Conclusions: Results of the driving test performance of the prototype crawler in paddy rice field at the water depth of 0.5 m were satisfactory. The prototype had enough drawbar pull and driving ability in the deep water contained paddy field.

Required Mowing Power and Bale Density of Miscanthus × Giganteus for Field Biomass Harvesting using Different Methods

전현종,최일수,강태경,최용수,최덕규,이정근 한국농업기계학회 2014 바이오시스템공학 Vol.39 No.4

Purpose: This study investigated the harvesting properties of the giant miscanthus (Miscanthus × giganteus) to measure therequired mowing power for different stem conditioning methods in order to shorten the drying time after mowing and thebale density so that the crop can be used as biomass in the winter season. Methods: The required mowing power and baledensity were measured using a power measurement device, three different mower-conditioners, and a mid-sized roundbaler under different working speeds and conditioning methods. Results: For the various mower-conditioners, the averagestem length from mowing was 0.86–0.91 m, and the available working speed was 1.6 m/s. The steel roller-type mowerconditionershowed better stem conditioning but could not mow over a working speed of 1.6 m/s. The required averagepower of the mower-conditioners varied from 23.8 kW for the steel roller-type rotary disk mower-conditioner with aworking width of 2.4 m to 37.2 kW for the flail-type rotary disk mower-conditioner with a working width of 3.2 m at aworking speed of 1.6 m/s. The bale densities were 155.8–172.2 kg/m3. The highest bale density was measured for stemswith no conditioning and a moisture content of 11.3% (d.b.) mowed by the rotary disk mower. The bale density was affectedby the mowing method because of the low moisture content of the miscanthus stems. Conclusions: In terms of the workingperformance and conditioning statue, the steel roller-type mower-conditioner is a better choice at a working width of 2.4 m,while the flail finger-type mower-conditioner is better at a working width of 3.2 m. The type of mower-conditioner used forgiant miscanthus harvesting should be determined by considering the harvest area, workable period, and workingperformance of a mower-conditioner and baler during the winter.

2004 개정 상표법상 지리적 표시 단체표장제도

전현종,Jeon, Hyeon-Jong 한국발명진흥회 2005 發明特許 Vol.30 No.9

2004 개정 상표법상 지리적 표시 단체표장제도

전현종,Jeon, Hyeon-Jong 한국발명진흥회 2005 發明特許 Vol.30 No.8

미로내 신경초종 1예와 이전 국내에서 보고된 미로내 신경초종 증례의 문헌 고찰

전현종,채희성,이하늘,서영준 대한이비인후과학회 2020 대한이비인후과학회지 두경부외과학 Vol.63 No.6

Vestibular schwannoma is a rare tumor that develops in the nerves responsible for vestibularfunction and hearing. It usually affects middle-aged people, and is diagnosed by hearing andimaging tests. In the majority of cases, it occurs in the retro-cochlear space and very rarely inthe labyrinth. Several vestibular schwannoma localized in the labyrinth have been reportedworldwide. Since then 5 cases have been reported. With advances in the imaging study, the diagnosisof intralabyrinthine schwannomas have increased. Our report describes the characteristicsand treatments of intralabyrinthine schwannomas reported in Korea, including five previouslyreported cases and the case experienced by authors.

2004 개정 상표법상 지리적 표시 단체표장제도

전현종,Jeon, Hyeon-Jong 한국발명진흥회 2005 發明特許 Vol.30 No.7

Sorghum Harvesting Using a Head-feeding Type Rice Combine

전현종,최일수,강태경,최용,최덕규,이충근,김상훈 한국농업기계학회 2018 바이오시스템공학 Vol.43 No.4

Purpose: The aim of this study was to determine appropriate threshing and selection conditions for sorghum harvesting using a rice combine-harvester. Methods: Sorghum harvesting performance was tested using an actual rice combine. Through this test, the grain loss rate and the composition of crops according to the engine and fan speeds of the combine were investigated. Furthermore, the optimal threshing and selection conditions were determined by carrying out a harvest test based on the opening size factor of the concave in a test field. Results: The grain loss rate for the sorghum using a concave (18×18 mm) of the rice combine was the lowest at 0.1% at a chaffer angle of 40°, engine speed of 2000 rpm, and fan speed of 20 m/s, but the sorting sieve clogged frequently. Furthermore, as the engine speed and fan speed increased, the grain loss rate also increased. The sorghum harvesting test results of the combine according to the concave opening size showed that the grain loss rate was 0.5% at a driving speed of 0.5 m/s, with a concave opening diameter of 13 mm, a chaffer angle of 40°, a concave sieve oscillation frequency of 4.8 Hz, a fan speed of 20 m/s, and an engine speed of 2000 rpm. Conclusions: Findings showed that sorghum could be harvested using a head feeding rice combine.

Study on Performance Improvement of a Head-Feeding Rice Combine for Foxtail Millet Harvesting

전현종,최일수,강태경,최용,최덕규,이충근 한국농업기계학회 2015 바이오시스템공학 Vol.40 No.1

Purpose: The study was conducted to investigate the proper working conditions like the mesh size of the concave and thechaffer angle of the oscillating sieve, and the fan speed of the head-feeding rice combine for foxtail millet harvesting. Methods: The study aimed to determine the harvesting conditions for the rice combine harvester at a 0.5 m/s working speedand at 40° and 55° sieve chaffer angles. The harvesting loss of the foxtail millet based on the speed of the fan and theoscillating speed of the sieve was measured at three levels of fan speed and oscillating sieve speed. Results: The threshingrates of different foxtail millet varieties were 64.1~83.5% at a mesh size of 7 mm of the concave. In experimental foxtailmillet harvesting, the optimal operating condition of the rice combine harvester included a 40° sieve chaffer angle and a 4.8Hz oscillating sieve (cleaning shoe) frequency. The grain loss was found to be lower at a 40° than at a 55° sieve chaffer angle. In field harvesting using the combine harvester, the lowest harvesting grain loss rate of the foxtail millet varieties rangedbetween 0.2~0.5% at a 7 mm mesh concave, 40° chaffer angle, 4.8 Hz sieve frequency, and a 20 m/s fan speed at an enginespeed of 2,000 revolutions per minute (RPM). Conclusions: Findings showed that foxtail millet could be harvested using thecombine harvester.