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公开(公告)号：US10004132B2
公开(公告)日：2018-06-19
申请号：US15505548
申请日：2014-10-23
发明人： Toshihide Aiba , Kenichi Moteki
摘要： A dose rate monitoring device includes: a first energy compensation coefficient operation part obtaining a first energy compensation coefficient to incident radiation using the first compensation coefficient table, a first dose rate operation part obtaining a first compensation dose rate of incident radiation using the first energy compensation coefficient and G (E) function, a second energy compensation coefficient operation part obtaining a second energy compensation coefficient to incident radiation using a second compensation coefficient table, a second dose rate operation part obtaining a second compensation dose rate of incident radiation using a second energy compensation coefficient, a dose rate switching section which select an output according to the magnitude of a ratio of the first compensation dose rate to the second compensation dose rate, and a display operating section which displays the first compensation dose rate or the second compensation dose rate which the dose rate switching section outputs.
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公开(公告)号：US09435899B1
公开(公告)日：2016-09-06
申请号：US14864021
申请日：2015-09-24
发明人： Toshihide Aiba , Kenichi Moteki
CPC分类号： G01T1/208 , G01T1/178 , G01T1/2008 , G01T1/2018 , G01T1/203 , G01T1/2992 , G21C17/00
摘要： A radioactive gas monitoring device includes a sample chamber into which a sampled gas is introduced; a plastic scintillation detector outputting first detection signal pulses; an inorganic crystal scintillation detector outputting second detection signal pulses; a first measurement unit calculating a first count rate from the first detection signal pulses to output the first count rate, and issuing a first alert when the first count rate becomes higher than a first preset level and issuing a second alert when the first count rate becomes higher than a second preset level higher than the first preset level; and a second measurement unit calculating a second count rate from the second detection signal pulses to output the second count rate, and issuing a third alert when the second count rate becomes higher than a third preset level.
摘要翻译： 放射性气体监测装置包括：样品室，其中引入采样气体; 输出第一检测信号脉冲的塑料闪烁检测器; 输出第二检测信号脉冲的无机晶体闪烁检测器; 第一测量单元，从第一检测信号脉冲计算第一计数率以输出第一计数率;以及当第一计数率变得高于第一预设电平时发出第一警报，并且当第一计数率变为 高于第一预设水平的第二预设水平; 以及第二测量单元，从第二检测信号脉冲计算第二计数率以输出第二计数率，并且当第二计数率变得高于第三预设电平时发出第三警报。
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公开(公告)号：US09116245B2
公开(公告)日：2015-08-25
申请号：US13966609
申请日：2013-08-14
发明人： Kenichi Moteki , Toshihide Aiba
IPC分类号： G01T1/02
摘要： In order to provide a high accuracy radiation dose rate measurement system by good energy characteristics without deteriorating the original energy characteristics of a low dose rate range due to widening range, the dose rate measurement system is composed of: a radiation detector which sends a discrete current pulse having electric charge proportional to incident radiation energy and a DC voltage in which a DC current proportional to the radiation energy is converted; a high voltage power source which supplies a high voltage that operates the radiation detector; and a measurement unit in which the current pulse and the DC voltage are applied from the radiation detector to be converted to a low range dose rate and a high range dose rate respectively, and the low range dose rate and the high range dose rate are switched to be sent depending on the dose rates.
摘要翻译： 为了通过良好的能量特性提供高精度的辐射剂量率测量系统，而不会由于扩大的范围而劣化低剂量率范围的原始能量特性，剂量率测量系统包括：发射离散电流的辐射检测器 具有与入射辐射能成比例的电荷的脉冲和其中转换与辐射能成比例的直流电流的直流电压; 提供操作所述辐射检测器的高电压的高压电源; 以及测量单元，其中从辐射检测器施加电流脉冲和直流电压，以分别转换为低范围剂量率和高范围剂量率，并且切换低范围剂量率和高范围剂量率 根据剂量率发送。
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公开(公告)号：US11081244B2
公开(公告)日：2021-08-03
申请号：US15736040
申请日：2015-09-08
发明人： Toshihide Aiba , Atsushi Saito
IPC分类号： G21C17/108 , G01T3/00 , G21C17/10 , H03G1/00 , G21D3/00 , H04B14/04 , H03G3/00 , H04B1/04 , G01T1/17
摘要： In an encore nuclear instrumentation system which is equipped with a movable type neutron detector, an object of the invention is to control measurement errors due to the degradation of the system. The incore nuclear instrumentation system includes a neutron detector which is to be installed in a nuclear reactor stored in a containment vessel, and an instrumentation unit which has a current detector circuit and is to be installed on the outside of the containment vessel. An output signal of the neutron detector is inputted into the current detector circuit, and the instrumentation unit remembers a matrix which shows a relation among a reactor power of the nuclear reactor, a gain of the current detector circuit, and an output voltage Vn of the current detector circuit, and the calibration of the current detector circuit is performed with reference to the matrix.
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公开(公告)号：US20150212214A1
公开(公告)日：2015-07-30
申请号：US14419588
申请日：2013-04-09
发明人： Tetsushi Azuma , Masateru Hayashi , Hiroshi Nishizawa , Hajime Nakajima , Kenji Inomata , Masakazu Nakanishi , Toshihide Aiba
摘要： A radioactivity analyzing apparatus for analyzing a radionuclide contained in a sample material. The apparatus includes a radiation detector that detects a radiation to be detected emitted from the sample material and a radiation analyzer configured to analyze the radiation based on an output from the radiation detector. The radiation analyzer includes a pulse-height analyzer configured to extract a pulse-height distribution from a pulse signal being output from the radiation detector and depending on the radiation, an inverse-problem operator configured to perform an inverse-problem solution of the pulse-height distribution to extract an energy spectrum of the radiation, and a deterioration detector configured to determine a deterioration state of the radiation detector based on the extracted energy spectrum.
摘要翻译： 一种用于分析包含在样品材料中的放射性核素的放射性分析装置。 所述装置包括：辐射检测器，其检测从所述样品材料发射的待检测的辐射;以及辐射分析器，其被配置为基于来自所述辐射检测器的输出来分析所述辐射。 辐射分析仪包括：脉冲高度分析器，被配置为从辐射检测器输出的脉冲信号中提取脉冲高度分布，并且根据辐射，反问题操作器被配置为执行脉冲宽度分析的逆问题解决方案， 高度分布以提取辐射的能谱;以及劣化检测器，被配置为基于所提取的能谱来确定辐射检测器的劣化状态。
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公开(公告)号：US20140312228A1
公开(公告)日：2014-10-23
申请号：US13966609
申请日：2013-08-14
发明人： Kenichi MOTEKI , Toshihide Aiba
IPC分类号： G01T1/02
摘要： In order to provide a high accuracy radiation dose rate measurement system by good energy characteristics without deteriorating the original energy characteristics of a low dose rate range due to widening range, the dose rate measurement system is composed of: a radiation detector which sends a discrete current pulse having electric charge proportional to incident radiation energy and a DC voltage in which a DC current proportional to the radiation energy is converted; a high voltage power source which supplies a high voltage that operates the radiation detector; and a measurement unit in which the current pulse and the DC voltage are applied from the radiation detector to be converted to a low range dose rate and a high range dose rate respectively, and the low range dose rate and the high range dose rate are switched to be sent depending on the dose rates.
摘要翻译： 为了通过良好的能量特性提供高精度的辐射剂量率测量系统，而不会由于扩大的范围而劣化低剂量率范围的原始能量特性，剂量率测量系统包括：发射离散电流的辐射检测器 具有与入射辐射能成比例的电荷的脉冲和其中转换与辐射能成比例的直流电流的直流电压; 提供操作所述辐射检测器的高电压的高压电源; 以及测量单元，其中从辐射检测器施加电流脉冲和直流电压，以分别转换为低范围剂量率和高范围剂量率，并且切换低范围剂量率和高范围剂量率 根据剂量率发送。
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公开(公告)号：US10650932B2
公开(公告)日：2020-05-12
申请号：US15541724
申请日：2015-03-05
发明人： Toshihide Aiba , Toshimitsu Nakai
IPC分类号： G21C17/108 , G21C7/36 , G21D1/02 , G21D3/10
摘要： A detector signal-processing circuit comprises the following: a current/voltage conversion part that converts the current value of a neutron detector to a voltage value; a variable gain amplification part that performs amplification by a first-step variable gain using a D/A converter; a current level response-use resistance circuit that selects the measurement range in accordance with the voltage value; temperature measurement units for measuring the temperature of the resistance circuit for current level response; a temperature compensation part for commanding gain compensation by the D/A converter on the basis of the measured temperature; and a selective adjustment control part for selective control of the measurement range and adjustment of the variable gain of the variable gain amplification part. 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.
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公开(公告)号：US20190267145A1
公开(公告)日：2019-08-29
申请号：US16334479
申请日：2016-11-22
发明人： Atsushi Saito , Toshihide Aiba
IPC分类号： G21C17/108 , G01T3/00
摘要： Non-contact sensors are used as a pull-out limit switch and a safety limit switch, so that contact between a drive cable and a thimble tube and both limit switches is avoided and abrasion of both limit switches is eliminated. In addition, erroneous detection due to vibration of the thimble tube is prevented by eliminating contact between the thimble tube and both limit switches, whereby accuracy of passing of a detector is enhanced.
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公开(公告)号：US09841508B2
公开(公告)日：2017-12-12
申请号：US15501411
申请日：2014-08-26
发明人： Kenichi Moteki , Toshihide Aiba
CPC分类号： G01T1/026 , G01T1/023 , G01T1/15 , G01T1/16 , G01T1/1603 , G01T1/17 , G01T1/20 , G01T1/201 , G01T1/24 , G01T1/247 , G01T7/00
摘要： Three semiconductor detectors are installed at positions where incidence of radiation on a scintillation detector is not blocked, at equal intervals centered on a central axis of the scintillation detector and at equal angles with respect to a plane which is at a right angle to the central axis. An energy compensation factor is determined on the basis of an average pulse height value obtained from a second pulse height spectrum obtained by analog voltage pulses which are output from these semiconductor detectors, and energy characteristics of a high-range dose rate obtained by a direct-current voltage which is output from the scintillation detector are compensated for.
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公开(公告)号：US09588236B2
公开(公告)日：2017-03-07
申请号：US14419588
申请日：2013-04-09
发明人： Tetsushi Azuma , Masateru Hayashi , Hiroshi Nishizawa , Hajime Nakajima , Kenji Inomata , Masakazu Nakanishi , Toshihide Aiba
摘要： A radioactivity analyzing apparatus for analyzing a radionuclide contained in a sample material. The apparatus includes a radiation detector that detects a radiation to be detected emitted from the sample material and a radiation analyzer configured to analyze the radiation based on an output from the radiation detector. The radiation analyzer includes a pulse-height analyzer configured to extract a pulse-height distribution from a pulse signal being output from the radiation detector and depending on the radiation, an inverse-problem operator configured to perform an inverse-problem solution of the pulse-height distribution to extract an energy spectrum of the radiation, and a deterioration detector configured to determine a deterioration state of the radiation detector based on the extracted energy spectrum.
摘要翻译： 一种用于分析包含在样品材料中的放射性核素的放射性分析装置。 所述装置包括：辐射检测器，其检测从所述样品材料发射的待检测的辐射;以及辐射分析器，其被配置为基于来自所述辐射检测器的输出来分析所述辐射。 辐射分析仪包括：脉冲高度分析器，被配置为从辐射检测器输出的脉冲信号中提取脉冲高度分布，并且根据辐射，反问题操作器被配置为执行脉冲宽度分析的逆问题解决方案， 高度分布以提取辐射的能谱;以及劣化检测器，被配置为基于所提取的能谱来确定辐射检测器的劣化状态。
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