YAMAMOTO Satoshi

写真a

Affiliation

IWATE University  Faculty of Agriculture  Department of Rural Environmental Sciences  Course of Innovateive Agriculture 

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Research Interests 【 display / non-display 】

  • UAV

  • digital twin

  • Robotic Farming

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External Career 【 display / non-display 】

  • 2026.04
    　
    　

    Iwate University   Faculty of Agriculture   Associate Professor  

  • 2017.04
    -
    2026.03

    Akita Prefectural University   Associate Professor  

  • 2016.04
    -
    2017.03

    National Agriculture and Food Research Organization  

  • 2009.04
    -
    2016.03

      Chief Researcher  

  • 2004.04
    -
    2009.03

      Researcher  

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Research Areas 【 display / non-display 】

  • Agricultural Mechanization Engineering

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Published Papers 【 display / non-display 】

  • Prototype Development of Small Mobile Robots for Mallard Navigation in Paddy Fields: Toward Realizing Remote Farming

    Hirokazu Madokoro, Satoshi Yamamoto, Yo Nishimura, Stephanie Nix, Hanwool Woo, Kazuhito Sato

    Robotics   10 ( 2 ) 63 - 63   2021.04

    Academic Journal  Single Work

    DOI

  • Collision-free control of a strawberry-harvesting robot by recognition of immature fruits

    HAYASHI Shigehiko, TAKESHITA Daisaku, YAMAMOTO Satoshi, SAITO Sadafumi, SAGA Kiyotaka, IMOU Kenji

    Shokubutsu Kankyo Kogaku ( Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists )  25 ( 1 ) 29 - 37   2013.03

    Academic Journal  Single Work

    This paper presents a procedure and the results of obstacle-avoidance control of a stationary strawberry-harvesting robot to be used with circulating-type movable bench cultivation. The stereovision unit detects mature and immature fruits from beneath the bench while being conveyed laterally. Based on the positional relation between them, the most appropriate direction for the end-effector approach is determined to avoid collision with immature fruits. The end-effector approaches along the calculated direction and controls its posture at 120 mm and 80 mm front of the target fruit, using visual feedback so as to match the roll angle of the end-effector with the peduncle angle, as estimated using a hand-eye camera. In the peduncle detection procedure, green LED lights are used to emphasize the calyx and peduncle. The proposed stereovision algorithm showed a success rate for detection of the appropriate approach angle of 89-93%. In the insertion test, the hand-eye camera was able to recognize the target peduncle at a success rate of 77-80% by facing the fruit from the most appropriate approach angle, and the end-effector was able to insert a peduncle at a success rate of 73-78%. The end-effector approach along the appropriate approach angle was confirmed to be the effective way to avoid collision with immature fruits, although several multiple insertions were observed. Our proposed procedure proved to work functionally together with the lateral movement of the movable bench.

    DOI CiNii J-GLOBAL

  • Study on Work Efficiency and Practical Scale of a Movable Bench System for Strawberry Cultivation

    SAITOH Sadafumi, HAYASHI Shigehiko, YAMAMOTO Satoshi, IWASAKI Yasunaga, TAKAHASHI Nobuyuki

    JOURNAL of the JAPANESE SOCIETY of AGRICULTURAL MACHINERY ( The Japanese Society of Agricultural Machinery and Food Engineers )  74 ( 6 ) 457 - 464   2012.11

    Academic Journal  Single Work

    To elucidate the practical scale of a movable bench system for strawberry cultivation, we investigated harvesting efficiency using the system. Our results indicated that working hours required for harvesting per cultivation bed depended on the number of mature fruits. If there were relatively few fruits, the working hours depended on the cycle time of the system. In contrast, if there were many fruits, the working hours, which increased in proportion to the number of fruits, were affected by the picking and placing speed of the operator. It also appeared that the maximum practical scale of the system was approximately 770m<SUP>2</SUP> with two operators.

    DOI CiNii J-GLOBAL

  • Study on an Inside-approach Harvesting Robot for Picking Strawberries

    HAYASHI Shigehiko, YAMAMOTO Satoshi, SAITO Sadafumi, YAMASHITA Tomoki, TANAKA Tomomasa, SAKAMOTO Naoki, KASHIHARA Naoya, SUGANO Shigeki

    JOURNAL of the JAPANESE SOCIETY of AGRICULTURAL MACHINERY ( The Japanese Society of Agricultural Machinery and Food Engineers )  74 ( 4 ) 325 - 333   2012.07

    Academic Journal  Single Work

    This study investigated the potential for autonomous harvesting of strawberries cultivated in a hanging-type elevated substrate.<BR> Investigation of degree of overlap between inside and outside revealed that approximately 90% of mature fruits are located at the front and can be detected by an inside inspection. Harvesting tests were conducted using an inside-approach harvesting robot that can travel beneath a hanging bench and pick fruits on both sides using a single manipulator. The success rates for detecting and for picking were 68.7% and 50.6% for var. Benihoppe, and 75.0% and 63.0% for var. Amaotome. Our investigation of degree of overlap and harvesting tests demonstrated that the improved visibility of mature fruits from inside led to significantly enhanced picking performance.

    DOI CiNii J-GLOBAL

  • Gentle handling of strawberries using a suction device

    Shigehiko Hayashi, Kohei Takahashi, Satoshi Yamamoto, Sadafumi Saito, Takashi Komeda

    BIOSYSTEMS ENGINEERING   109 ( 4 ) 348 - 356   2011.08  [Refereed]

    Academic Journal  Single Work

    DOI

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Review Papers 【 display / non-display 】

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Association Memberships 【 display / non-display 】

  • 　
    　
    　
     

    JAPANESE SOCIETY OF AGRICULTURAL MACHINERY AND FOOD ENGINEERS

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