Title:
Excore-nuclear-instrumentation device
Document Type and Number:
Japanese Patent JP6132998
Kind Code:
B2
Abstract:
A detector signal-processing circuit (8) comprises the following: a current/voltage conversion part (21) that converts the current value of a neutron detector (3) to a voltage value; a variable gain amplification part (22) that performs amplification by a first-step variable gain using a D/A converter (53); a current level response-use resistance circuit (41) that selects the measurement range in accordance with the voltage value; temperature measurement units (82, 83, and 84) for measuring the temperature of the resistance circuit (41) for current level response; a temperature compensation part (81) for commanding gain compensation by the D/A converter (53) on the basis of the measured temperature; and a selective adjustment control part (26) for selective control of the measurement range and adjustment of the variable gain of the variable gain amplification part (22). Due to this configuration, neutron flux can be measured with high precision while maintaining a constant output precision, before and after switching of the measurement range.
Inventors:
Toshihide
Toshimitsu Nakai
Toshimitsu Nakai
Application Number:
JP2017502912A
Publication Date:
May 24, 2017
Filing Date:
March 05, 2015
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G21C17/108; G01T3/00; G21C17/10
Domestic Patent References:
| JP2012163362A | ||||
| JP3243824A | ||||
| JP61022293A | ||||
| JP61056926A | ||||
| JP50094954A |
Attorney, Agent or Firm:
Masuo Oiwa
Takenaka Ikuo
Keigo Murakami
Kenji Yoshizawa
Takenaka Ikuo
Keigo Murakami
Kenji Yoshizawa
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