Title:
Neutron flux level measuring device, neutron flux level arithmetic unit and neutron flux level measuring method
Document Type and Number:
Japanese Patent JP6334264
Kind Code:
B2
Abstract:
According to one embodiment, a neutron flux level computing component has: an analog signal processing system that amplifies an AC component of a detector output signal from a neutron detector and performs filtering for removal of a high-frequency component; a digitization system that converts, at a certain sampling period, an output signal from the analog signal processing system into a digital time-series signal; a wavelet analysis system that performs discrete wavelet transformation using the digital time-series signal to compute a wavelet coefficient; and a digital signal processing system that computes a mean square value of the wavelet coefficients and converts the computed mean square value into a neutron flux level value.
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Inventors:
Shigehiro Kono
Daijiro Ito
Shuzo Kitazono
Daijiro Ito
Shuzo Kitazono
Application Number:
JP2014110141A
Publication Date:
May 30, 2018
Filing Date:
May 28, 2014
Export Citation:
Assignee:
Toshiba Corporation
Toshiba Energy Systems Co., Ltd.
Toshiba Energy Systems Co., Ltd.
International Classes:
G01T3/00; G01T1/17; G21C17/10; G21C17/108
Domestic Patent References:
| JP2013181766A | ||||
| JP11311618A |
Other References:
大谷 暢夫,ウェーブレット解析による臨界近接の検知法の開発,動力炉・核燃料開発事業団大洗工学センター 報告書,日本,動力炉・核燃料開発事業団,1997年 1月
OK JOO KIM et al.,Investigation of Reactor Condition Monitoring and Singularity Detection via Wavelet Transform and De-noising,Nuclear Engineering and Technology,NL,Elsevier,2007年 4月14日,Vol.39, No.3,pp.221-230
OK JOO KIM et al.,Investigation of Reactor Condition Monitoring and Singularity Detection via Wavelet Transform and De-noising,Nuclear Engineering and Technology,NL,Elsevier,2007年 4月14日,Vol.39, No.3,pp.221-230
Attorney, Agent or Firm:
Patent Business Corporation Sakura International Patent Office
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