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    • 3. 发明授权
    • Inside-tube-wall radioactive contamination monitor, and monitoring device and method using the same
    • 管内壁放射性污染物监测器,监测装置及其使用方法
    • US08461540B2
    • 2013-06-11
    • US13127992
    • 2009-11-10
    • Yasunori NakashimaTetsuo GotoKenzo Ogawa
    • Yasunori NakashimaTetsuo GotoKenzo Ogawa
    • G01T1/20
    • G01T1/169G01T1/20
    • Even when a radiation detector contacts a pipe arrangement or another member that is an object to be monitored, the damage of the detector is prevented without impairing the detection performance. An inside-tube-wall radioactive contamination monitor comprises: a rod-like light guide bar having a polygonal cross-section; a plurality of scintillators secured to the outer circumferential surface of the light guide bar; a net-like protective tube worn so as to cover the outer circumference of the scintillators with a space between the surfaces of the scintillators and the tube; and a guide portion attached to an end of the net-like protective tube, supporting an end of the light guide bar, and having a shape the diameter of which decreases as approaching the end. The monitor includes: a photoelectric conversion unit coupled to the base end of the net-like protective tube and incorporating a photoelectric conversion element; and a signal processing unit connected to the photoelectric conversion unit.
    • 即使辐射检测器接触管路装置或作为被监视物体的另一构件,也可以防止检测器的损坏而不损害检测性能。 管内壁放射性污染监测器包括:具有多边形横截面的棒状导光棒; 固定在导光杆的外周面上的多个闪烁体; 一个网状保护管穿戴,以便在闪烁体和管的表面之间具有空间来覆盖闪烁体的外周; 以及引导部分,其附接到网状保护管的端部,支撑导光杆的端部,并且具有直径接近端部的直径的形状。 该监视器包括:光电转换单元,其联接到网状保护管的基端并且并入光电转换元件; 以及连接到光电转换单元的信号处理单元。
    • 4. 发明申请
    • INSIDE-TUBE-WALL RADIOACTIVE CONTAMINATION MONITOR, AND MONITORING DEVICE AND METHOD USING THE SAME
    • 内管壁放射性污染监测器和监测装置及其使用方法
    • US20110284752A1
    • 2011-11-24
    • US13127992
    • 2009-11-10
    • Yasunori NakashimaTetsuo GotoKenzo Ogawa
    • Yasunori NakashimaTetsuo GotoKenzo Ogawa
    • G01T1/20
    • G01T1/169G01T1/20
    • Even when a radiation detector contacts a pipe arrangement or another member that is an object to be monitored, the damage of the detector is prevented without impairing the detection performance. An inside-tube-wall radioactive contamination monitor comprises: a rod-like light guide bar having a polygonal cross-section; a plurality of scintillators secured to the outer circumferential surface of the light guide bar; a net-like protective tube worn so as to cover the outer circumference of the scintillators with a space between the surfaces of the scintillators and the tube; and a guide portion attached to an end of the net-like protective tube, supporting an end of the light guide bar, and having a shape the diameter of which decreases as approaching the end. The monitor includes: a photoelectric conversion unit coupled to the base end of the net-like protective tube and incorporating a photoelectric conversion element; and a signal processing unit connected to the photoelectric conversion unit.
    • 即使辐射检测器接触管路装置或作为被监视物体的另一构件,也可以防止检测器的损坏而不损害检测性能。 管内壁放射性污染监测器包括:具有多边形横截面的棒状导光棒; 固定在导光杆的外周面上的多个闪烁体; 一个网状保护管穿戴,以便在闪烁体和管的表面之间具有空间来覆盖闪烁体的外周; 以及引导部分,其附接到网状保护管的端部,支撑导光杆的端部,并且具有直径接近端部的直径的形状。 该监视器包括:光电转换单元,其联接到网状保护管的基端并且并入光电转换元件; 以及连接到光电转换单元的信号处理单元。
    • 5. 发明申请
    • SURVEY METER
    • 调查表
    • US20100282975A1
    • 2010-11-11
    • US11938507
    • 2007-11-12
    • Akio SumitaSyunichiro MakinoMikio IzumiTetsuo Goto
    • Akio SumitaSyunichiro MakinoMikio IzumiTetsuo Goto
    • G01T1/20G01T1/208
    • G01T1/20G01T1/167G01T7/00
    • A survey meter for measuring a radioactive contamination caused in an inner surface of a pipe includes a radiation detecting section and a signal processing section. The radiation detecting section includes a rod-shaped light guide unit, a reflecting portion connected to one end surface of the light guide unit, a photoelectric transfer unit, for outputting an electronic signal, connected to another one end surface of the light guide unit, and a scintillator unit provided to a circumference of the light guide unit. The signal processing section includes a pulse height discriminator for outputting a logic signal at a time when a pulse height value of the electronic signal outputted from the photoelectric transfer unit is higher than a threshold value, a counter unit for counting the logic signal, a contamination judging unit for judging whether a radioactive contamination is caused or not, and a display unit for displaying the value counted by the counter unit and a contamination judging result judged by the contamination judging unit.
    • 用于测量在管内表面产生的放射性污染物的测量计包括辐射检测部分和信号处理部分。 放射线检测部包括棒状导光部,与导光部的一个端面连接的反射部,与导光部的另一个端面连接的电子信号输出用的光电转移部, 以及设置在所述导光单元的周围的闪烁体单元。 信号处理部分包括:脉冲高度鉴别器,用于在从光电转移单元输出的电子信号的脉冲高度值高于阈值时输出逻辑信号,用于计数逻辑信号的计数器单元,污染物 用于判断是否产生放射性污染的判断单元和用于显示由计数器单元计数的值的显示单元和由污染判断单元判断的污染判定结果。
    • 6. 发明授权
    • Survey meter
    • 测量仪表
    • US08044356B2
    • 2011-10-25
    • US11938507
    • 2007-11-12
    • Akio SumitaSyunichiro MakinoMikio IzumiTetsuo Goto
    • Akio SumitaSyunichiro MakinoMikio IzumiTetsuo Goto
    • G01T1/20
    • G01T1/20G01T1/167G01T7/00
    • A survey meter for measuring a radioactive contamination caused in an inner surface of a pipe includes a radiation detecting section and a signal processing section. The radiation detecting section includes a rod-shaped light guide unit, a reflecting portion connected to one end surface of the light guide unit, a photoelectric transfer unit, for outputting an electronic signal, connected to another one end surface of the light guide unit, and a scintillator unit provided to a circumference of the light guide unit. The signal processing section includes a pulse height discriminator for outputting a logic signal at a time when a pulse height value of the electronic signal outputted from the photoelectric transfer unit is higher than a threshold value, a counter unit for counting the logic signal, a contamination judging unit for judging whether a radioactive contamination is caused or not, and a display unit for displaying the value counted by the counter unit and a contamination judging result judged by the contamination judging unit.
    • 用于测量在管内表面产生的放射性污染物的测量计包括辐射检测部分和信号处理部分。 放射线检测部包括棒状导光部,与导光部的一个端面连接的反射部,与导光部的另一个端面连接的电子信号输出用的光电转移部, 以及设置在所述导光单元的周围的闪烁体单元。 信号处理部分包括:脉冲高度鉴别器,用于在从光电转移单元输出的电子信号的脉冲高度值高于阈值时输出逻辑信号,用于计数逻辑信号的计数器单元,污染物 用于判断是否产生放射性污染的判断单元和用于显示由计数器单元计数的值的显示单元和由污染判断单元判断的污染判定结果。
    • 8. 发明授权
    • Frequency synthesizer having DDS in place of VCO
    • 具有DDS代替VCO的频率合成器
    • US5539346A
    • 1996-07-23
    • US334239
    • 1994-11-04
    • Tetsuo Goto
    • Tetsuo Goto
    • H03L7/197H03B28/00H03L7/093H03L7/099H03L7/183H03L7/16
    • H03L7/183H03L7/093H03L7/0994
    • A frequency synthesizer is able not only to keep a high frequency stability and follow a frequency of a reference signal that is set to cover or varies over a broad range, but also to provide stable phase-locked loop characteristics without a variable frequency oscillator being employed. In the frequency synthesizer, a phase-locked loop comprises phase comparator 1 for detecting a phase difference between reference signal A and comparison signal B to output phase error information; loop filter 2 for generating loop control information D in accordance with the phase error information C; and DDS 22 which generates the comparison signal B in accordance with the loop control information D which is a phase incremental value to take a required frequency out of waveform data corresponding to a phase by employing a clock signal from clock oscillator 32. Thus, synchronizing signal I which follows reference signal A, a frequency of which is set to cover or varies over a broad range can be obtained.
    • 频率合成器不仅可以保持高频稳定性,而且可以遵循被设置为在宽范围内覆盖或变化的参考信号的频率,而且能够提供稳定的锁相环特性而不使用可变频率振荡器 。 在频率合成器中,锁相环包括用于检测参考信号A和比较信号B之间的相位差以输出相位误差信息的相位比较器1; 环路滤波器2,用于根据相位误差信息C产生回路控制信息D; 以及DDS22,其根据循环控制信息D生成比较信号B,循环控制信息D是相位增量值,以通过采用来自时钟振荡器32的时钟信号从对应于相位的波形数据中取出所需频率。因此,同步信号 可以获得其参考信号A的频率被设置为在宽范围内覆盖或变化的I。