公开(公告)号：US5896645A

公开(公告)日：1999-04-27

申请号：US764818

申请日：1996-12-12

申请人： Hisashi Kado

发明人： Hisashi Kado

IPC分类号： A61B5/05 ,  F25D3/10 ,  G01R33/035 ,  H01L39/04 ,  H01F41/00

CPC分类号： G01R33/0354 ,  Y10T29/49014 ,  Y10T29/4902 ,  Y10T29/4973

摘要： A magnetomeasuring apparatus includes a cooling vessel holding a plurality of magnetic field sensors and a coolant. The magnetomeasuring apparatus comprises a sensor support with the plurality of magnetic field sensors removably mounted thereon, and fixing means for removably fixing the sensor support with the plural magnetic field sensors mounted thereon to a measuring surface of the cooling vessel. An opening of the cooling vessel is larger than the measuring surface with the sensor support secured to. The magnetomeasuring apparatus has a small opening so that the apparatus has a small total amount of heat intruding the vessel.

摘要翻译： 磁力测量装置包括容纳多个磁场传感器和冷却剂的冷却容器。 磁力测量装置包括具有可移除地安装在其上的多个磁场传感器的传感器支架和用于将安装在其上的多个磁场传感器的传感器支架可拆卸地固定到冷却容器的测量表面上的固定装置。 冷却容器的开口大于传感器支撑件固定的测量表面。 磁力测定装置具有小的开口，使得该装置具有小量侵入容器的热量。

公开(公告)号：US5880588A

公开(公告)日：1999-03-09

申请号：US812304

申请日：1997-03-05

申请人： Hisashi Kado

发明人： Hisashi Kado

IPC分类号： G01R33/02 ,  A61B5/04 ,  A61B5/05 ,  G01R33/035

CPC分类号： A61B5/04005 ,  G01R33/035 ,  Y10S505/846

摘要： Apparatus for measuring weak magnetic fields includes a cryogenic vessel CR having a domed bottom D for accepting a human head, a plurality of magnetic sensor units 10 mounted upright on the inner surface of the bottom D of the cryogenic vessel CR, an interface device 20 for receiving output signals of the magnetic sensor units 10 through respective lead lines 4, a data processor device 30 for analyzing the output signals of the magnetic sensor units 10 to specify magnetic fields spread in the ambient space about the human head and calculating the activity of a brain B from the magnetic fields, and a display device 40 for displaying the brain activity. Each of the magnetic sensor units 10 is fed along its guide line G through a small opening OP of the cryogenic vessel CR and mounted upright on the bottom D. As the opening OP of the cryogenic vessel CR is relatively small, the evaporation loss of a coolant in the cryogenic vessel CR is minimized and the running cost of the apparatus will be decreased.

摘要翻译： 用于测量弱磁场的装置包括具有用于接收人头的圆底D的低温容器CR，垂直安装在低温容器CR的底部D的内表面上的多个磁传感器单元10，用于 通过相应的引线4接收磁传感器单元10的输出信号;数据处理器装置30，用于分析磁传感器单元10的输出信号，以指定围绕人头的环境空间中扩散的磁场， 来自磁场的脑B，以及显示脑活动的显示装置40。 每个磁传感器单元10沿其引导线G通过低温容器CR的小开口OP进给，并直立安装在底部D.当低温容器CR的开口OP相对较小时，蒸发损失 低温容器CR中的冷却剂被最小化并且装置的运行成本将降低。

公开(公告)号：US5291135A

公开(公告)日：1994-03-01

申请号：US767667

申请日：1991-09-30

申请人： Masao Hotta ,  Hisashi Kado ,  Keiko Makie

发明人： Masao Hotta ,  Hisashi Kado ,  Keiko Makie

IPC分类号： G01R33/035

CPC分类号： G01R33/0356 ,  Y10S505/846

摘要： A multichannel weak magnetic field measuring system for neuromagnetic diagnosis is provided having a plurality of dc-SQUID magnetometers. Bias current setting circuits are provided for detecting an even harmonic component of the output across the terminals of the corresponding SQUID and automatically adjusting a DC bias current to the SQUID. Accordingly, the level of the component becomes a predetermined value. Circuitry is also included for equalizing the magnetic flux detection sensitivities of these dc-SQUID magnetometers. Abnormal operation detecting circuits are also provided for producing abnormal operation detected outputs when the level of the corresponding even harmonic component is smaller than a certain threshold value.

摘要翻译： 提供了具有多个dc-SQUID磁力计的用于神经磁性诊断的多通道弱磁场测量系统。 提供偏置电流设定电路，用于检测相应SQUID两端的输出的均匀谐波分量，并自动调整到SQUID的直流偏置电流。 因此，部件的电平成为规定值。 还包括电路用于均衡这些dc-SQUID磁力计的磁通检测灵敏度。 当相应的偶次谐波分量的电平小于某个阈值时，还提供异常运行检测电路用于产生异常运行检测输出。

公开(公告)号：US5211178A

公开(公告)日：1993-05-18

申请号：US766349

申请日：1991-09-27

申请人： Hisashi Kado ,  Tomoaki Ueda

发明人： Hisashi Kado ,  Tomoaki Ueda

IPC分类号： A61B5/0402 ,  A61B5/0452 ,  A61B5/05 ,  G01R33/035 ,  G06F17/00

CPC分类号： A61B5/04007 ,  A61B5/0456

摘要： Cross-correlation values representative of cross-correlation of an electrocardiogram pulse with a rectangular pulse window which consists of a negative rectangular pulse, a positive rectangular pulse and a negative rectangular pulse are obtained. An R-wave of the electrocardiogram is detected by a peak of the cross-correlation values is detected. Then a magnetocardiogram in synchronism with the R-wave of the electrocardiogram is detected. Magnetocardiograms corresponding to individual cycles of a magnetocardiogram can be added as required.

公开(公告)号：US6023633A

公开(公告)日：2000-02-08

申请号：US69688

申请日：1998-04-29

申请人： Hisashi Kado

发明人： Hisashi Kado

IPC分类号： A61B5/05 ,  F25D3/10 ,  G01R33/035 ,  H01L39/04

CPC分类号： G01R33/0354 ,  Y10T29/49014 ,  Y10T29/4902 ,  Y10T29/4973

摘要： A magnetomeasuring apparatus includes a cooling vessel holding a plurality of magnetic field sensors and a coolant. The magnetomeasuring apparatus comprises a sensor support with the plurality of magnetic field sensors removably mounted thereon, and a fixing device for removably fixing the sensor support with the plural magnetic field sensors mounted thereon to a measuring surface of the cooling vessel. An opening of the cooling vessel is larger than the measuring surface. The magnetomeasuring apparatus has a small opening so that the apparatus has a small total amount of heat intruding the vessel.

摘要翻译： 磁力测量装置包括容纳多个磁场传感器和冷却剂的冷却容器。 磁力测量装置包括具有可移除地安装在其上的多个磁场传感器的传感器支架，以及用于将安装在其上的多个磁场传感器的传感器支架可拆卸地固定到冷却容器的测量表面上的定影装置。 冷却容器的开口大于测量表面。 磁力测定装置具有小的开口，使得该装置具有小量侵入容器的热量。

公开(公告)号：US5206589A

公开(公告)日：1993-04-27

申请号：US766344

申请日：1991-09-27

申请人： Hisashi Kado ,  Tomoaki Ueda

发明人： Hisashi Kado ,  Tomoaki Ueda

IPC分类号： A61B5/05 ,  G01R33/02 ,  G01R33/035 ,  G01R33/10

CPC分类号： G01R33/0206 ,  Y10S505/846

摘要： Plural vector magnetic flux meters are disposed based on predetermined relationships in their positions, to obtain vector magnetic flux at plural points. The obtained vector magnetic flux includes magnetic flux components in plural directions. Curved surface interpolation is carried out based on the magnetic flux components in the corresponding direction to obtain magnetic flux components for arbitrary points. Magnetic flux components in plural directions for an arbitrary point are obtained by selecting the obtained magnetic flux components for the arbitrary point belonging to a region which overlaps with all interpolation regions for corresponding magnetic flux components of the magnetic flux. Vector magnetic flux corresponding to a condition that differences between positions of pickup coils of corresponding vector magnetic flux meters and the predetermined position of the vector magnetic flux meter are supposed to be 0, are obtained based on the obtained magnetic flux components in plural directions and the relative positions of the pickup coils.