Faculty Profiles - ISHII Kazuo

Papers - ISHII Kazuo

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Underwater Acoustic Communication using QPSK Modulation Method Reviewed International journal

Yuya Nishida, Yuichiro Uemura, Rikuto Tanaka, Kazuo Ishii

Proceedings of 2022 International Conference on Artificial Life and Robotics 27 774 - 778 2022.01

A Network of Underwater Sensors Estimating Feeding Behavior for Digitizing Optimized Feeding Decisions in Marine Aquaculture Reviewed International journal

Dominic B. Solpico, Yuya Nishida, Kazuo Ishii

Proceedings of 2022 International Conference on Artificial Life and Robotics 27 762 - 767 2022.01

Reflection Coefficient Estimation through the Modelling of Ultrasonic Transmission Reviewed International journal

Ryuugo Mochizuki, Yuya Nishida, Kazuo Ishii

Proceedings of 2022 International Conference on Artificial Life and Robotics 27 750 - 755 2022.01

Fall Risk Notification System using LiDAR Sensor for the Visually Impaired People Reviewed International journal

Daigo Katayama, Kazuo Ishii, Shinsuke Yasukawa, Satoshi Nakadomari, Koichi Wada, Akane Befu, Chikako Yamada

Proceedings of 2022 International Conference on Artificial Life and Robotics 27 745 - 749 2022.01

Evaluation of roller arrangement of sphere by omnidirectional integral value Reviewed International journal

Kenji Kimura, Yusuke Abematsu, Hirai Hiroyasu, Kazuo Ishi

Proceedings of 2022 International Conference on Artificial Life and Robotics 27 374 - 377 2022.01

Exercise on Environmental Monitoring and Control of Green house by IoT Devices toward Smart Agriculture Reviewed International journal

Yuya Nishida, Ryuugo Mochizuki, Shinsuke Yasukawa, Kazuo Ishii

Proceedings of 2022 International Conference on Artificial Life and Robotics 27 367 - 373 2022.01

Inter-University Collaboration Aimed at Integrating Different Robotic Field: Development of Underwater Robots and Soccer Robots Though these Competitions Reviewed International journal

Kai Shioji, Shinsuke Yasukawa, Kazuo Ishii

Proceedings of 2022 International Conference on Artificial Life and Robotics 27 365 - 368 2022.01

Tomato Harvesting in Greenhouse Considering the Effect of Sunlight Reviewed International journal

Kai Shioji, Shinsuke Yasukawa, Kazuo Ishii

Proceedings of 2022 International Conference on Artificial Life and Robotics 27 360 - 364 2022.01

A Network of Underwater Sensors Estimating Feeding Behavior for Digitizing Optimized Feeding Decisions in Marine Aquaculture Reviewed International journal

Solpico Dominic B., Mishima Kota, Nishida Yuya, Ishii Kazuo

Proceedings of International Conference on Artificial Life and Robotics ( ALife Robotics Corporation Ltd. ) 27 762 - 767 2022.01

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

Optimization of fish feeding in marine aquaculture has relied on an expert farmer's decision-making based on subjective experience. This paper presents the development of a network of underwater current, imaging and IMU sensors for estimating fish feeding behavior for digitizing expert feeding decision-making. We constructed the sensor units and deployed them in fish cages and collected measurements during feeding activities. Experiment results indicate that currents were highest at the surface within the duration of the feeding activity.The 2022 International Conference on Artificial Life and Robotics (ICAROB 2022), January 20-23, 2022, on line, Oita, Japan

DOI： 10.5954/icarob.2022.os29-1

CiNii Article

CiNii Research

Other Link： http://hdl.handle.net/10228/00008703

An Estimation Method of Coastal Ocean Debris Using Aerial Drone Reviewed International journal

Ishii Kazuo, Shirahashi Kanako, Nishida Yuya, Tominaga Moeko, Tanaka Yoshiki, B. Solpico Dominic

Proceedings of International Conference on Artificial Life and Robotics ( ALife Robotics Corporation Ltd. ) 27 1095 - 1101 2022.01

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

The actual situation of marine litter has not been measured accurately; however innumerable floating garbage are drifting in the ocean. Especially, non-perishable waste such as microplastics continues to grow and is damaging marine life, including endangered species, and some are washed ashore and causing pollution damage to coastal areas. Microplastics incorporated into marine organisms, Arctic Sea ice, and deep-sea seafloor sediments have also been detected. The Ellen MacArthur Foundation in the United Kingdom estimates that the total amount of marine debris exceeds 150 million tons, with more than 8 million tons of new inflow each year. We measured and compared the amount of ocean debris in coasts in Hirado and Matsuura cities, Nagasaki with manual count and an aerial drone observation.The 2022 International Conference on Artificial Life and Robotics (ICAROB 2022), January 20-23, 2022, on line, Oita, Japan

DOI： 10.5954/icarob.2022.os27-5

CiNii Article

CiNii Research

Other Link： http://hdl.handle.net/10228/00008702

Autonomous Underwater Vehicle with Vision-based Navigation System for Underwater Robot Competition Reviewed International journal

Harada Kazuki, Fukuda Riku, Mizoguchi Yusuke, Yamamoto Yusuke, Mishima Kota, Tanaka Yoshiki, Nishida Yuya, Ishii Kazuo

Proceedings of International Conference on Artificial Life and Robotics ( ALife Robotics Corporation Ltd. ) 27 354 - 359 2022.01

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

The underwater robot competition in international conference Techno-Ocean 2021 was held to advance underwater technology, in Dec. 2021. The competition consists of five leagues including AUV (Autonomous Underwater Vehicle) league, and Kyushu underwater robotics which is the Underwater Student Project team at our university that joint the AUV league using developed AUV. The wet test of the AUV league includes a Gate Pass mission which requires passing through an underwater green gate, Buoy Touch mission requiring contact with the yellow and red buoys, and Special mission requiring contact with the Pinger which has an unknown location. Our AUV navigates by image processing using underwater camera to achieve the mission. This paper explains the AUV system, the mission strategy and detail of image processing.The 2022 International Conference on Artificial Life and Robotics (ICAROB 2022), January 20-23, 2022, on line, Oita, Japan

DOI： 10.5954/icarob.2022.os28-2

CiNii Article

CiNii Research

Other Link： http://hdl.handle.net/10228/00008693

Exercise on Environmental Monitoring and Control of Green house by IoT Devices toward Smart Agriculture Reviewed International journal

Nishida Yuya, Mchizuki Ryugo, Yasukawa Shinsuke, Ishii Kazuo

Proceedings of International Conference on Artificial Life and Robotics ( ALife Robotics Corporation Ltd. ) 27 369 - 373 2022.01

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

As crops in greenhouses are widely distributed, IoT devices placed near the crops should be stand-alone and modular, and data from the devices are collected over the networks. Smart agriculture requires knowledge of a wide range of fields including electricity, information, and image processing. We have designed an AI and IoT technology exercise on environmental monitoring and control of a greenhouse where we have been preparing for grow up of tomatoes and other vegetables.The 2022 International Conference on Artificial Life and Robotics (ICAROB 2022), January 20-23, 2022, on line, Oita, Japan

DOI： 10.5954/icarob.2022.os28-5

CiNii Article

CiNii Research

Other Link： http://hdl.handle.net/10228/00008696

Fall Risk Notification System using LiDAR Sensor for the Visually Impaired People Reviewed International journal

Katayama Daigo, Ishii Kazuo, Yasukawa Shinsuke, Nakadomari Satoshi, Wada Koichi, Befu Akane, Yamada Chikako

Proceedings of International Conference on Artificial Life and Robotics ( ALife Robotics Corporation Ltd. ) 27 745 - 749 2022.01

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

We have developed the fall risk notification system using LiDAR sensors to reduce number of fall accidents on platform involving visually impaired people. In this paper, we report the experiment results of the environment recognition algorithm for the fall risk notification system. In this algorithm, height grid map is generated from the depth image from LiDAR sensor and the posture of iPhone. In the experiment, we evaluated the accuracy and responsivity when approaching risky area of falling, such as stairs.The 2022 International Conference on Artificial Life and Robotics (ICAROB 2022), January 20-23, 2022, on line, Oita, Japan

DOI： 10.5954/icarob.2022.os27-2

CiNii Article

CiNii Research

Other Link： http://hdl.handle.net/10228/00008692

Inter-University Collaboration Aimed at Integrating Different Robotic Field: Development of Underwater Robots and Soccer Robots Though these Competitions Reviewed International journal

Tominaga Moeko, Ahn Jonghyun, Takemura Yasunori, Ishii Kazuo

Proceedings of International Conference on Artificial Life and Robotics ( ALife Robotics Corporation Ltd. ) 27 365 - 368 2022.01

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

In robotics, the problems and solutions to be focused on may differ due to the different fields of robots to be developed. In this research, we will verify the effect of exchanging opinions and sharing knowledge by collaborating with students aiming to participate in different robot competitions between underwater robots and soccer robots. As a result of analysis using neural networks, it was found that collaborative research between universities contributes to maintaining student motivation.The 2022 International Conference on Artificial Life and Robotics (ICAROB 2022), January 20-23, 2022, on line, Oita, Japan

DOI： 10.5954/icarob.2022.os28-4

CiNii Article

CiNii Research

Other Link： http://hdl.handle.net/10228/00008695

Motion Control of a Ship Hull Cleaning Robot Reviewed International journal

Yamamoto Hyoga, Nishida Yuya, Matsuo Takayuki, Ishii Kazuo

Proceedings of International Conference on Artificial Life and Robotics ( ALife Robotics Corporation Ltd. ) 27 785 - 788 2022.01

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

As the fuel cost will rise continuously, the reduction of fuel consumption and CO2 emissions are required more severely in the transportation industry. To achieve more efficient ship transportation, the prevention of marine biofouling is inevitable. Anti-fouling paint is effective to prevent biofouling to the ship hulls like barnacles, however, even the painted hull acquires slime-like biofouling caused by marine alga on its surface easily. In general, the cleaning of the ship hull is carried out during inspection in dockyard once a year or by divers, which are high costs and high risk task. Frequent cleaning during the ship berthing is desirable to keep good fuel efficiency, and if possible, ships can keep good fuel efficiency that contributes the reduction of costs and CO2 production. As a solution for this issue, we have been introducing underwater robots for ship hull cleaning. In this paper, the motion control system of the robot is described.The 2022 International Conference on Artificial Life and Robotics (ICAROB 2022), January 20-23, 2022, on line, Oita, Japan

DOI： 10.5954/icarob.2022.os29-5

CiNii Article

CiNii Research

Other Link： http://hdl.handle.net/10228/00008701

Reflection Coefficient Estimation through the Modelling of Ultrasonic Transmission Reviewed International journal

Mochizuki Ryuugo, Nishida Yuya, Ishii Kazuo

Proceedings of International Conference on Artificial Life and Robotics ( ALife Robotics Corporation Ltd. ) 27 750 - 755 2022.01

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

In food industry, shortage of workers is one of a serious problem. Automation of food handling is a critical isSsue nowadays. To alleviate the damage caused by food picking operation by robotic hand, we propose non-contact acoustic impedance estimation with ultrasonic wave, which should be preceded before the picking for optimization of grasp stiffness. We have the assumption of the correlation between hardness and acoustic impedance. The impedance is calculated by the product of sonic velocity and density of a medium. From the point of view, the harder the medium is, the larger the impedance should be. We built up ultrasonic transmission model considering attenuation by ultrasonic reflection and absorption, then, made an experiment to estimate internal reflection of samples with two overwrapped media of different acoustic impedance.The 2022 International Conference on Artificial Life and Robotics (ICAROB 2022), January 20-23, 2022, on line, Oita, Japan

DOI： 10.5954/icarob.2022.os27-3

CiNii Article

CiNii Research

Other Link： http://hdl.handle.net/10228/00008698

Tomato Harvesting in Greenhouse Considering the Effect of Sunlight Reviewed International journal

Shioji Kai, Yasukawa Shinsuke, Ishii Kazuo

Proceedings of International Conference on Artificial Life and Robotics ( ALife Robotics Corporation Ltd. ) 27 360 - 364 2022.01

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

Tomato is one of the important fruit vegetables and most tomatoes are produced in the greenhouses, or large-scale farms, where the high temperature and humidity, and long harvest age force the farmer heavy works. To develop the tomato harvesting robot, many research issues exist such as manipulator design, end-effector design, collaborative behavior, artificial intelligence, motor control, image processing, target recognition and so on. For the operation in greenhouses, the recognition system with color constancy under sunlight is necessary. In the harvesting, tomatoes should be handled gently for less damages so that the soft handling end-effector is needed. In this paper, we introduce the system configuration of the robot and the experiments conducted to solve the problem in the greenhouse.The 2022 International Conference on Artificial Life and Robotics (ICAROB 2022), January 20-23, 2022, on line, Oita, Japan

DOI： 10.5954/icarob.2022.os28-3

CiNii Article

CiNii Research

Other Link： http://hdl.handle.net/10228/00008694

Ultrasonic Cleaner using Two Transducers for Ship Hull Cleaning Robot Reviewed International journal

Nishida Yuya, Matsumura Toshihiro, Ishii Kazuo

Proceedings of International Conference on Artificial Life and Robotics ( ALife Robotics Corporation Ltd. ) 27 779 - 784 2022.01

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

Fuel consumption of the ship gets worse by barnacles and stains put on its bottom, so that the ship hull should be cleaned regularly. Usual methods such as cleaning by special divers and cleaning after pulling up to the dock are not used frequently due to those high cost and the heavy burden on cleaners. We proposed a cleaning method using underwater vehicle with brushes, however there is a possibility to remove paints on the hull. To improve cleaning performance of the underwater vehicle, the ultrasonic cleaner is developed by using cavitation occurred by sound waves of the acoustic transduces. The cleaner generates sound waves with sound pressure of 0.2MPa or more required to occur cavitation at the point where sound waves from two transducers overlap. In experimental results, the cleaner occurred cavitation enough to make two holes in the aluminum foil located 50mm away from transducers.The 2022 International Conference on Artificial Life and Robotics (ICAROB 2022), January 20-23, 2022, on line, Oita, Japan

DOI： 10.5954/icarob.2022.os29-4

CiNii Article

CiNii Research

Other Link： http://hdl.handle.net/10228/00008700

Underwater Acoustic Communication using QPSK Modulation Method Reviewed International journal

Nishida Yuya, Uemura Yuichiro, Tanaka Rikuto, Ishii Kazuo

Proceedings of International Conference on Artificial Life and Robotics ( ALife Robotics Corporation Ltd. ) 27 774 - 778 2022.01

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

Acoustic communication has a lot of influence of noises, and difficulties in sending and receiving data correctly because of the noise from robot's thrusters and other acoustic devices. To improve the acoustic communication performance, this research developed acoustic communication system against the thruster's noise. Communication message includes not only data (payloads) but also sync signal and error correction bytes, and the message is converted to acoustic wave by QPSK modulation which four phase data represent two bits.

DOI： 10.5954/icarob.2022.os29-3

CiNii Research

Evaluation of roller arrangement of sphere by omnidirectional integral value Reviewed International journal

Kimura K., Abematsu Y., Hirai H., Ishii K.

Proceedings of International Conference on Artificial Life and Robotics 374 - 377 2022.01

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Papers - ISHII Kazuo