JOURNAL of the JAPANESE SOCIETY of AGRICULTURAL MACHINERY
Online ISSN : 1884-6025
Print ISSN : 0285-2543
ISSN-L : 0285-2543
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Volume 73, Issue 3
Displaying 1-12 of 12 articles from this issue
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ESSAY
SPECIAL EDITION
TECHNO-TOPICS
RESEARCH ACTIVITIES
PAPERS (Articles)
RESEARCH PAPER
  • Image-based Automatic Following Control of an Agricultural Vehicle with a Central Catadioptric Camera
    Toshifumi HIRAMATSU, Keita KURASHIKI, Takanori FUKAO, Noriyuki MURAKAM ...
    2011 Volume 73 Issue 3 Pages 191-198
    Published: May 01, 2011
    Released on J-STAGE: April 24, 2013
    DOIhttps://doi.org/10.11357/jsam.73.191
    JOURNAL FREE ACCESS
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    This paper proposes an image-based path-following control system for an agricultural vehicle with a central catadioptric camera. In an agricultural field, the vehicle is expected to run along a ridge and boundaries between tilled and untilled, or cut and uncut areas. Therefore, we conducted two experiments : a straight-line-following control and a turning control. Because of their wide view area, central catadioptric cameras were very effective in keeping target objects in the field of view. In addition, although such cameras had severe distortion, good performance was obtained using image-based control with robustness to the calibration error.
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TECHNICAL PAPERS
  • Development of a Composting Implement with a Dehydration Mechanism
    Noriyuki MURAKAMI, Masaru SHIRATO, Teruo MATSUDA, Sumi MIYAURA, Keiich ...
    2011 Volume 73 Issue 3 Pages 199-206
    Published: May 01, 2011
    Released on J-STAGE: April 24, 2013
    DOIhttps://doi.org/10.11357/jsam.73.199
    JOURNAL FREE ACCESS
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    A bucket implement for composting used for power shovels was developed. It has a movable cover and a movable bucket base that are used for dehydration and aeration of manure. The bucket is applicable for manure containing wheat straw with moisture content of less than 84% and bulk density of less than 550kg/m3. One or two crush and squeeze operations can accelerate fermentation of materials. Operational capacity of the implement is 21.5t/hour.
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  • The Influence of Heating and Humidifying by Humidified Air on GABA Generation and Quality in Brown Rice
    Hidenori MIZUNO, Takeshi FUKUMORI, Kousei LIU, Shigeharu KANEMOTO, Yas ...
    2011 Volume 73 Issue 3 Pages 207-214
    Published: May 01, 2011
    Released on J-STAGE: April 24, 2013
    DOIhttps://doi.org/10.11357/jsam.73.207
    JOURNAL FREE ACCESS
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    This experiment measured the chemical composition, quality and taste of rinse-free processed rice produced under different heating, humidifying and drying conditions in order to further develop technology to enrich brown rice with functional components such as GABA. The results show that the amount of GABA generated varies widely based on heating and humidifying conditions, and we observed that a large quantity of the GABA generated was transferred from the germ and bran layers to the endosperm during the process. Of the conditions tested, the optimum conditions were found to be gradually increasing the temperature to 70°C over a period of 7 hours and then holding it at 70°C for 4 hours. The relative humidity during this process should be 80 to 95% for the first two hours and 98% for the remaining 9 hours (total 11 hours). The humidifying should then be followed by drying for 6 hours. The rice processed under these conditions showed a significant increase in brown rice GABA content, and the milled and rinse free rice produced from that brown rice also exhibited high quality and good flavor.
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