公开(公告)号：US06498478B2

公开(公告)日：2002-12-24

申请号：US09928586

申请日：2001-08-13

申请人： Fumio Sakata ,  Nobuyoshi Yamazaki ,  Shinichi Endo ,  Koji Watanabe

发明人： Fumio Sakata ,  Nobuyoshi Yamazaki ,  Shinichi Endo ,  Koji Watanabe

IPC分类号： G01B714

CPC分类号： G01B7/004 ,  G01B7/30 ,  G01C17/30

摘要： First to third exciting coils are arranged at a reference position. First to third detecting coils are arranged at a measuring subject position distant from the reference position. Voltages induced in the first to third detecting coils are measured when the first exciting coil is excited. Voltages induced in the first to third detecting coils are measured when the second exciting coil is excited. Voltages induced in the first to third detecting coils are measured when the third exciting coil is excited. An azimuth of the measuring subject position from the reference position based on a predetermined calculation by using all nine induced-voltages which are obtained by the first to third detecting coils.

摘要翻译： 第一至第三励磁线圈布置在参考位置。 第一至第三检测线圈布置在远离基准位置的测量对象位置处。 当第一激励线圈被激励时，测量在第一至第三检测线圈中感应的电压。 当第二激励线圈被激励时，测量在第一至第三检测线圈中感应的电压。 当第三激励线圈被激励时，测量在第一至第三检测线圈中感应的电压。 通过使用由第一至第三检测线圈获得的全部9个感应电压，基于预定的计算，从基准位置测量对象位置的方位角。

公开(公告)号：US5565860A

公开(公告)日：1996-10-15

申请号：US482408

申请日：1995-06-08

申请人： Fumio Sakata ,  Nobuyoshi Yamazaki

发明人： Fumio Sakata ,  Nobuyoshi Yamazaki

IPC分类号： E21B47/12 ,  G08C17/04 ,  G08C19/00 ,  H04B13/00 ,  G01V1/40

CPC分类号： E21B47/122

摘要： In an underground information collecting apparatus which comprises a steel rod with an end to be inserted into the ground and which is for collecting on the ground underground information detected by a sensor mounted in the end, a noise receiving coil is provided to the rod in the vicinity of a main receiving coil which receives a magnetic signal transmitted from a transmitting coil through the rod and which produces a receiving signal. An amplitude and phase adjusting circuit adjusts a noise amplitude and a noise phase included in an induced noise signal obtained in the noise receiving coil to produce an adjusted noise signal having an adjusted noise amplitude and an adjusted noise phase. The adjusted noise amplitude and the adjusted noise phase are adjusted to be coincident with a noise amplitude and a noise phase contained in the receiving signal obtained in the main receiving coil, respectively. A differential circuit subtracts the adjusted noise signal from the receiving signal to cancel a noise component from the receiving signal.

摘要翻译： 在一种地下信息收集装置中，包括具有插入地面的端部的钢杆，并且用于在地面上收集由安装在其上的传感器检测到的地下信息，噪声接收线圈被提供到杆 主接收线圈附近，其接收从发射线圈通过杆传输的磁信号，并产生接收信号。 幅度和相位调整电路调整包含在噪声接收线圈中获得的感应噪声信号中的噪声振幅和噪声相位，以产生具有经调整的噪声振幅和经调整的噪声相位的经调整的噪声信号。 调整后的噪声振幅和调整后的噪声相位被调整为分别与在主接收线圈中获得的接收信号中包含的噪声振幅和噪声相一致。 差分电路从接收信号中减去调整后的噪声信号，以从接收信号中消除噪声分量。

公开(公告)号：US5579255A

公开(公告)日：1996-11-26

申请号：US449487

申请日：1995-05-24

申请人： Fumio Sakata

发明人： Fumio Sakata

IPC分类号： G06G7/40 ,  G06G7/38

CPC分类号： G06G7/40

摘要： In order to carry out dynamic analysis of a phenomenon described by a fourth-order partial differential equation of a function, an analog arithmetic circuit includes a Poisson's circuit (11) and a Laplace's circuit (15). The Poisson's circuit (11) includes a resistor network, additional resistors (R) having one ends connected to nodes of the resistor network, respectively, and subtractor circuits (13) each of which is for subtracting a predetermined voltage from a node voltage at each node to produce an output voltage supplied to the other end of the additional resistor connected to each node. External and boundary voltages are applied to the resistor network. The Laplace's circuit (15) comprises a similar resistor network. Each of the nodes of the Laplace's circuit is connected to the corresponding one of the subtractor circuits to supply the predetermined voltage. Each of calculating circuits (17) connected to peripheral terminals of the Laplace's circuit calculates a voltage from the external and boundary voltages and the node voltage to produce a calculated voltage supplied to the peripheral terminals. Thus, the node voltages provide solutions of the function.

摘要翻译： 为了对功能的四阶偏微分方程描述的现象进行动态分析，模拟运算电路包括泊松电路（11）和拉普拉斯电路（15）。 泊松电路（11）包括一个电阻网络，一端分别连接到电阻网络的节点的附加电阻（R）和减法器电路（13），每个减法器电路用于从每个节点电压减去一个预定电压 节点，以产生提供给连接到每个节点的附加电阻器另一端的输出电压。 外部和边界电压施加到电阻网络。 拉普拉斯电路（15）包括一个类似的电阻网络。 拉普拉斯电路的每个节点连接到相应的一个减法器电路以提供预定电压。 连接到拉普拉斯电路的外围端子的每个计算电路（17）根据外部和边界电压和节点电压来计算电压，以产生提供给外围端子的计算电压。 因此，节点电压提供了该功能的解决方案。

公开(公告)号：US5540085A

公开(公告)日：1996-07-30

申请号：US346428

申请日：1994-11-29

申请人： Fumio Sakata ,  Nobuyoshi Yamazaki ,  Masaichiro Hatano ,  Hitoshi Arai ,  Ken Arai ,  Masanobu Furukawa

发明人： Fumio Sakata ,  Nobuyoshi Yamazaki ,  Masaichiro Hatano ,  Hitoshi Arai ,  Ken Arai ,  Masanobu Furukawa

IPC分类号： G01M3/16 ,  G01B7/16

CPC分类号： G01M3/16

摘要： A method for detecting a leakage position in an impervious sheet, which comprises disposing a first and a second electrode units on an upper side and a lower side of the impervious sheet, respectively, the first electrode unit intersecting with the second electrode unit; short-circuiting all of electrodes in the first electrode unit; selecting a plurality of electrode sets one set after another set in the second electrode unit, each set comprising three electrodes adjacent to each other; supplying an AC voltage from an AC power source across a central one of each electrode set and the short circuited electrodes of the first electrode unit; measuring a potential difference between the other electrodes in the each electrode set to produce a measured voltage signal; and phase-detecting the measured voltage signal with a signal synchronized with the AC voltage from the AC power source to produce a detected signal, a series of the detected signals produced one after another changing in polarity due to a damage existing in the sheet, whereby a first position of the damage being detected on a one dimensional coordinate in an extending direction of the first electrode unit. Thereafter, the similar operation is carried out by replacing the first and the second electrode units by each other to obtain a second position of the damage on a one-dimensional coordinate in an extending direction of the second electrode unit; and defining a two-dimensional position of the damage from the first and the second positions.

摘要翻译： 一种用于检测不透过片材中的泄漏位置的方法，包括分别在不透过片材的上侧和下侧设置第一和第二电极单元，第一电极单元与第二电极单元相交; 短路第一电极单元中的所有电极; 选择在第二电极单元中设置的多个电极组，每组包括彼此相邻的三个电极; 从AC电源提供跨越每个电极组的中心一个和第一电极单元的短路电极的AC电压; 测量每个电极组中的其他电极之间的电位差以产生测量的电压信号; 并用与交流电源的交流电压同步的信号对测量的电压信号进行相位检测，以产生检测信号，由于片材中存在的损坏，一系列检测信号产生一个接一个的极性变化，由此 在第一电极单元的延伸方向上的一维坐标上检测到的损伤的第一位置。 此后，通过将第一电极单元和第二电极单元彼此替换来获得在第二电极单元的延伸方向上的一维坐标上的损伤的第二位置，进行类似的操作; 并且从第一和第二位置限定损伤的二维位置。