著者

間瀬 淳

出版者

公益社団法人 計測自動制御学会

雑誌

計測と制御 (ISSN:04534662)

巻号頁・発行日

vol.50, no.3, pp.233-242, 2011-03-10 (Released:2021-11-30)

参考文献数

47

著者

岩田 武徳 間瀬 淳 北條 仁士

出版者

九州大学大学院総合理工学府

雑誌

九州大学大学院総合理工学報告 (ISSN:13467883)

巻号頁・発行日

vol.28, no.3, pp.329-334, 2006-12

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Alien substance mixture accident inside foods is serious problems for both consumer and company side. The systems that can measure the different kinds of alien substance have been required. The detecting systems using X-ray, SQUID sensor, and supersonic wave as well as metal detector have been developed and been in the market, however, they are, in many cases, appropriate for the detection of metal alien substance. We have been studying the system using millimeter-waves with frequency of 50-140 GHz to detect both metal and dielectric alien substance. The scattered and transmitted waves are detected using a heterodyne receiver. The angular distribution of the scattered wave is analyzed to obtain the dispersion, auto-correlation function, and the Fourier spectrum. The neural network analysis is utilized to judge the mixture and the size of alien substances. It is shown that the alien substance having 1-3 mm size can be detected in spite of the materials by the present system. By using short wavelength millimeter wave, it is expected to detect even less than 1 mm alien substance.

著者

長山 好夫 間瀬 淳

出版者

社団法人 プラズマ・核融合学会

雑誌

プラズマ・核融合学会誌 (ISSN:09187928)

巻号頁・発行日

vol.81, no.5, pp.337-348, 2005 (Released:2005-07-29)

参考文献数

29

被引用文献数

2 2

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Present status of the development of microwave imaging diagnostics is presented. Electron cyclotron emission imaging (ECEI) is useful to obtain 2-D cross-sectional view of electron temperature. Microwave imaging reflectometer (MIR) is useful to obtain 2-D picture of electron density fluctuation. They will be powerful tool to study localized magnetohydrodynamic (MHD) instability and micro instability, which cause turbulence in plasma. Microwave imaging sensor is key technology, and several types of antenna array with Schottky barrier diodes have been developed. In order to reduce the size and cost, microwave circuits on board have been also developed. Microwave imaging diagnostics are now installed in LHD and TEXTOR. Comparison between the ECEI in TEXTOR to the rotational ECE imaging in TFTR shows advantages of ECEI.

著者

山口 直洋 加藤 隆子 大谷 俊介 入山 美樹子 坂倉 昭慶 間瀬 淳 犬竹 正明 谷津 潔 三好 昭一 藤本 孝 佐藤 国憲

出版者

一般社団法人 日本物理学会

雑誌

秋の分科会予稿集

巻号頁・発行日

vol.1989, 1989

著者

竹村 素直 間瀬 淳 近木 祐一郎 北條 仁士

出版者

九州大学大学院総合理工学府

雑誌

九州大学大学院総合理工学報告 (ISSN:13467883)

巻号頁・発行日

vol.28, no.4, pp.367-370, 2007-03

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Recently there are much interests in using microwave radar for monitoring and diagnostics of living subjects. In contrast to infrared and visible lights, microwave can propagate through dielectric materials, such as, concrete wall, ground, and human body. An ultra-wideband (UWB) radar is the promising method of such detection, since it gives good spatial resolution as well as good penetration characteristics for various materials. In this report, we describe the development and application of an ultrashort-pulse radar (USPR) having ultra-wideband characteristics, which frequencies are in the range of 7-15 GHz. The simulation of breast cancer detection using the USPR is performed.

著者

山本 巧 間瀬 淳 築島 隆繁

出版者

一般社団法人日本物理学会

雑誌

春の分科会予稿集

巻号頁・発行日

vol.1974, no.4, 1974-03-20