Search Results 1-20 of 576

  • Laboratory experiment of the tomography measurement using a new microchip soil moisture sensor  [in Japanese]

    KOMATSU Mitsuru , FUTAGAWA Masato , FUJIWARA Yu , TAKYU Tsutomu

    <p>現在市販されている土中水分計はいずれもセンサのごく近傍の範囲を計測しており,いわゆる「点」としての情報に限られる.本研究では,「点」の情報は維持しながら,さらに広い「面」の情報に展開できるトモグラフィー方式による土中水分量のモニタリングシステムの確立を目的とし,小型半導体チップ型センサの適用性を検討した.具体的には,高速道路盛土に対する砕石竪排水工の設置効果を検証するための模型地 …

    Japanese Geotechnical Journal 15(1), 199-211, 2020

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  • Study of measuring bentonite density with active heating and OFDR measurement (Measurement of bentonite's heat conduction with heated fiber-optic cable)  [in Japanese]

    UYAMA Masao , SAKAKI Toshihiro

    … Moreover, we performed to measure a density using Optic-fiber cable to improve the measurement performance instead of the existing measurement sensor. … 1) High resolution measuring a temperature system which has multi-point measurement 2) The usage of reference box which have some fixed density of bentonite in the container beforehand and connect them on the measurement same line of fiber-optic cable. …

    Transactions of the JSME (in Japanese) 86(882), 19-00225-19-00225, 2020

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  • Reduction of Aerodynamically Undesirable Influences due to Engine Cooling Airflow of FR Car  [in Japanese]

    田代 晃寿 , 澤口 拓人 , 高倉 葉子

    東海大学紀要. 工学部 59(1), 23-30, 2019-09-30

    IR  DOI 

  • Wide-Angle Measurement of Gaze Point Using Multi-Viewpoint Camera and CNN  [in Japanese]

    榊原 直人 , 河中 治樹 , 小野 晋太郎 , 小栗 宏次

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 119(102), 7-12, 2019-07-05

  • STUDY ON THERMAL AND WIND ENVIRONMENT IN HILLY CITY WITH YATO TOPOGRAPHY:Understanding the current situation and proposing planning guideline for each topography classification using field measurement and numerical calculation  [in Japanese]

    YOKOYAMA Makoto , TANAKA Takahiro , SUGIYAMA Toru , SADOHARA Satoru

    … in slope area of Yato.</p><p> Therefore, understanding thermal and wind environment characteristics in hilly city including Yato and proposing planning guidelines (i.e. land use planning and natural resource utilizing planning) for every topography from the view point of urban warming effect mitigation is important to form sustainable urban environment in Yokohama.</p><p> From such backgrounds, this study aims to understand thermal and wind environmental characteristics of hilly city including Yato and propose panning …

    Journal of Environmental Engineering (Transactions of AIJ) (758), 457-467, 2019-04

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  • Basic Study of Damage Detection Using Vibration Characteristics Shift of Local Standing Wave Generated Between Excitation Points  [in Japanese]

    TANAKA Takashi

    … Firstly, the confirmation of local standing wave and measurement of that vibration characteristics is done by experiment using an ideal large beam structure which means the reflection at boundary condition is not generated. …

    The Proceedings of the Symposium on Evaluation and Diagnosis 2019.18(0), 111, 2019

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  • Analysis of Movement Trajectories Focusing on the Interaction Torque in Arm Movements  [in Japanese]

    OYAMA Takashi , ITO Teruaki

    … <p>Human motor control system must tame interaction torque that is derived due to the multi-joint structure of the body to propose a desired movement. … As the results of the measurement experiment in which participants performed movements specified three-point as the task of the experiment, interaction torque relates some characteristics of the trajectories of arm movements and there is the difference of its contribution to achievement of the task between dominant and non-dominant hands. …

    The Proceedings of Design & Systems Conference 2019.29(0), 1408, 2019

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  • Monitoring technique of weld quality using laser ultrasonic IV:(Development of robotic measurement system with microchip laser)  [in Japanese]

    NOMURA Kazufumi , MATSUIDA Taketo , KITA Ryosuke , OTAKI Satoshi , ASAI Satoru

    … <p>Our previous studies reported that the laser ultrasonic measurement system we have made could detect the weld pool shape and internal defects such as crack and lack of penetration during the welding process. … In addition, MOPA (Master Oscillator Power Amplifier) was used to compensate for the lack of laser power and multi-generation point by Galvano mirror system was equipped in order to improve the detectability. …

    The Proceedings of Mechanical Engineering Congress, Japan 2019(0), J40144, 2019

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  • Multi-wavelength and multi-point measurement to estimate component concentrations in optical phantoms  [in Japanese]

    MAEKAWA Daiki , SATO Shunsuke , KAKUTA Naoto

    … White optical phantoms made by mixing gelatin, intralipid solution, glucose, and water were prepared as the measurement samples. … The light beams at the multi-wavelengths were incident in turn to the phantoms, and the transmitted and reflected light was detected by a 16-channel-photo diode array. …

    The Proceedings of Mechanical Engineering Congress, Japan 2019(0), J24108P, 2019

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  • Temperature measurement in gas flow using multi-junction thermocouple array  [in Japanese]

    NAKAGUCHI Shota , INAGAKI Toru , KAWASAKI Kiyoshi , YAMANE Koji

    … <p>The aim of this study is to develop the method of measuring temperature distribution in gas flow using multi-junction thermocouple array. … The present study investigated the measurement principle using the 2 × 2 thermocouple array, which is the simplest type in the multi-junction thermocouple array. … This means increment of measurement point, i.e. 2 × 3 or 3 × 3 etc. …

    The Proceedings of Mechanical Engineering Congress, Japan 2019(0), J07102P, 2019

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  • STUDY ON APPLICATION OF SIMPLE DUST SENSOR TO TUNNEL CONSTRUCTION SITE  [in Japanese]

    KAKEYA Koshiro , HAYASHI Hisashi , OTSUKA Teruhito , NAKAMURA Kenji , SHINJI Masato

    <p> トンネル建設現場では,浮遊粉じんがより少ない良好な施工環境の構築を目指し,多様な換気システムが提案されている.本研究では,一般家庭用空気清浄機向けに開発された光散乱方式の粉じん濃度測定センサを改良し,トンネル坑内を多点かつ多頻度で粉じん濃度測定実施するため,小型で安価な施工環境の観測機器を開発すると同時に計測方法を提案する.そして,模擬トンネル実験によりトンネル坑内での測定器の …

    Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering) 75(2), I_12-I_19, 2019

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  • Measurement of natural vibrations of acoustic space by multi-point excitation using decentralized control:(Improvement of measurement accuracy by increasement of excitation point)  [in Japanese]

    SEKI Shigeki , OURA Yasunori , TANAKA Takashi , WU Zhiqiang , NAKAMURA Hiromu

    … <p>Measurement of natural vibration of acoustic space is effective for noise reduction in the cabin room of vehicle (e.g. auto-mobile, railroad car and so on). … In general, multi-point excitation is useful to measure natural vibration of three-dimensional acoustic space with high damping on boundary surface. … However, multi-point excitation needs adjustment of amplitude and phase for each actuator. …

    The Proceedings of the Dynamics & Design Conference 2019(0), 329, 2019

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  • Accuracy improvement of 5 point MEMS displacement sensor device for planar form measurement by using SOI wafer  [in Japanese]

    SUGITA Kenya , MATSUMOTO Tetsuya , TAMARU Yuma , SHIMIZU Hiroki

    … <p>In the 5-point method, the straight profile measurement of one line is performed using the sequential three point method, and the relation between the lines is simultaneously measured by two sensors arranged on the next scan line. … Using this relation, straightness measurement results of each line, which is acquired by the three-point method, are connected to obtain a planar shape. …

    The Proceedings of Conference of Kyushu Branch 2019.72(0), A44, 2019

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  • Improvement of zero adjustment error compensation in square layout four-point method by introducing angle sensor  [in Japanese]

    SASAHARA Ryutaro , SHIMIZU Hiroki , TAMARU Yuuma

    … <p>Square layout four-point method with angle correction has been proposed as an on-machine profile measurement method of machined flat surfaces. … To solve this problem, a back calculation method of the zero-adjustment error was proposed: which calculate zero-adjustment error from the difference in the error cumulative amount of two different calculation paths for a square measurement region, the raster scanning path and the diagonal path. …

    The Proceedings of Conference of Kyushu Branch 2019.72(0), A43, 2019

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  • Research on Measurement Precision of 3D Point Cloud Measured by Multi-return LiDAR  [in Japanese]

    聶 嘉盈 , 北山 耕平 , 硴崎 賢一 , 荒木 俊輔 , 向井 智久

    <p>LiDARで計測された三次元点群を利用して,地震等で損傷を受けた広範囲の多数のコンクリート造建物の損傷を迅速に検出する手法の研究を行っている。LiDARの機能として,レーザーの光路上の複数の対象の反射光を取得しデータ化することができるマルチリターン機能が様々な用途で活用されている。しかし,我々が研究を進めている高い計測精度が要求される建物の損傷分析などでは,マルチリターン機能によ …

    Record of Joint Conference of Electrical and Electronics Engineers in Kyushu 2019(0), 200-201, 2019

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  • Environmental Perception for Mobile Robots Using a Variable Ranging Sensor Array  [in Japanese]

    ARAI Tomoyuki , INOUE Ryota , KITAI Sasuga , TODA Yuichiro , WADA Kazuyoshi , TAKESUE Naoyuki , KUBOTA Naoyuki

    … For example, global measurement for recognizing the entire surrounding environment, local measurement for recognizing an obstacle, and the like are included. … In this paper, we propose a control method of the sensor array measurement using the concept of Multi-Objective Behavior Coordination. …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019(0), 2P1-D02, 2019

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  • Consideration for Utilization of Multi-UAV Flight on the Same Place:-Through the development of mesoscale meteorological observation system using 27 drones formation flight -  [in Japanese]

    YAGUCHI Yuichi , MATSUMOTO Yoshikatsu , NAKANO Shuzo , YAMAGISHI Kazuhiko , ITAHA Masayuki , IYOBE Tatsuya

    … <p>We report on the study of 27 drones to do the same work in one place at the same time on the basis of 'mesoscale meteorological measurement by 27 unit drone fleets' … As a result, while occasionally there was a drone descending due to the turbulence of the airflow, we were able to hover at a fixed point while maintaining a sufficiently safe airspace.</p> …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019(0), 1P1-N04, 2019

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  • Positioning Accuracy of a Super Long-reach Coupled Tendon-driven Manipulator "Super Dragon"  [in Japanese]

    TAKATA Atsushi , ENDO Gen , SUZUMORI Koichi , NABAE Hiroyuki

    … <p>Recently, a long-reach multi-joint manipulator is much required for investigation tasks. … This paper focuses on end-point positioning accuracy of the manipulator. … Joint angles and an end-point position were measured by potentiometer and a laser scanner, respectively. … A position of end-point which was calculated using joint angles was close in a distance of 0.2 m from result of measurement by the laser scanner. …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019(0), 1A1-R10, 2019

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  • Evaluating the precision and accuracy of low-cost Global Navigation Satellite System (GNSS) receivers beneath a forest canopy positioned in a crisscross arrangement.

    Yoshimura Tetsuhiko , Suzuki Yasushi

    <p>GNSS(全地球衛星航法システム)は衛星を用いたナビゲーションシステムであり,地球上のどこででも地理的な位置を決定するために広く利用されている。林業分野においても,GNSS は資源管理, 木材生産, 木材流通の効率を高めるための重要な技術である。しかし,GNSS 信号を遮断したり劣化したりする樹冠下におけるGNSS 測位による大きな位置誤差は,GPS が1990 年代に林業界に導 …

    Journal of The Japan Forest Engineering Society 34(4), n/a, 2019

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  • A Novel Three-Point Windowed Interpolation DFT Method for Frequency Measurement of Real Sinusoid Signal

    WANG Kai , GAO Yiting , ZHOU Lin

    … <p>The windowed interpolation DFT methods have been utilized to estimate the parameters of a single frequency and multi-frequency signal. … In this paper, we describe a novel three-point windowed interpolation DFT method for frequency measurement of real-valued sinusoid signal. …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E102.A(12), 1940-1945, 2019

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