著者

Tsuyoshi YAMAMOTO Eiichi YATSUKA Takaki HATAE Kazuya OTA Yasunori HASHIMOTO Kitaru NAKAMURA Tatsuo SUGIE Masaki TAKEUCHI Sin-iti KITAZAWA Hiroaki OGAWA Yasunori KAWANO Kiyoshi ITAMI

出版者

The Japan Society of Plasma Science and Nuclear Fusion Research

雑誌

Plasma and Fusion Research (ISSN:18806821)

巻号頁・発行日

vol.11, pp.2405114, 2016-10-05 (Released:2017-03-01)

参考文献数

15

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There is a need to develop ITER instrumentation and control (I&C) systems with high reliabilities. Interlock systems that activate machine protection functions are implemented on robust wired-logic systems such as programmable logic controllers (PLCs). We herein propose a software tool that generates program code templates for the control systems using PLC logic. This tool decreases careless mistakes by developers and increases reliability of the program codes. A large-scale engineering database has been implemented in the ITER project. To derive useful information from this database, we propose adding semantic data to it using the Resource Description Framework format. In our novel proposal for the ITER diagnostic control system, a guide words generator that analyzes the engineering data by inference is applied to the hazard and operability study. We validated the methods proposed in this paper by applying them to the preliminary design for the I&C system of the ITER edge Thomson scattering system.

著者

Naoya KAKIUCHI Junya OCHIAI Masaki TAKEUCHI Hideji TANAKA

出版者

The Japan Society for Analytical Chemistry

雑誌

Analytical Sciences (ISSN:09106340)

巻号頁・発行日

vol.37, no.1, pp.3-5, 2021-01-10 (Released:2021-01-10)

参考文献数

11

被引用文献数

2

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We propose a novel concept for detecting color transition by the inner product (IP) of RGB unit vectors. A digital microscope-based detector and a Visual Basic program were developed in-house. The concept is applied to indicator-based flow titration. The IP is 1 or < 1 if the vector’s direction is the same or different, respectively. The IP’s change can be used as a criterion for the indicator’s color transition. The present IP-based approach is simple, economical, and versatile because it is applicable to any color transition without selecting an analytical wavelength.