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公开(公告)号：US4981353A
公开(公告)日：1991-01-01
申请号：US348642
申请日：1989-05-08
IPC分类号： G01C3/10 , G21C17/003
CPC分类号： G21C17/003 , G01C3/10
摘要： An improved position detecting apparatus for detecting the position of an underwater moving body loaded with an inspecting device is provided. The apparatus is such that it makes it possible to perform inspection of a structure in water quickly, reliably and with high precision. The improvements reside in that the apparatus comprises a light source and a corner cube mounted on the underwater moving body in combination to serve as a target, a follower device, which includes a visual sensor for catching light emitted from the light source, for automatically following the target, an underwater argon laser length measuring instrument for measuring a distance between a length measuring head integrated with the visual sensor and the corner cube, and a detector device for detecting the position of the underwater moving body on the basis of an azimuth angle of the target obtained by the follower device, a reference of one side of a triangle and the measured distance.
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公开(公告)号：US08760371B2
公开(公告)日：2014-06-24
申请号：US12962392
申请日：2010-12-07
申请人： Shinichi Murakawa
发明人： Shinichi Murakawa
CPC分类号： G09G3/296 , G09G2330/04 , G09G2330/12
摘要： A drive circuit includes: first and second P-channel MOS transistors connected with a first voltage; a first N-channel MOS transistor connected between the first P-channel MOS transistor and a ground voltage, and having a gate connected with a first node and configured to receive a first input signal; and a second N-channel MOS transistor connected between the second P-channel MOS transistor and the ground voltage and having a gate connected with a second node and configured to receive a second input signal. An output P-channel MOS transistor is connected between the first voltage and an output node and has a gate connected with the second node, and an output N-channel MOS transistor is connected between the output node and the second voltage and has a gate supplied with an input signal having a same polarity as that of the first input signal. A P-channel MOS transistor has a source connected with the first node, a drain connected with the output node, and a gate connected with the second node.
摘要翻译： 驱动电路包括：与第一电压连接的第一和第二P沟道MOS晶体管; 连接在所述第一P沟道MOS晶体管和地电压之间的第一N沟道MOS晶体管，并且具有与第一节点连接并被配置为接收第一输入信号的栅极; 连接在所述第二P沟道MOS晶体管与所述接地电压之间的第二N沟道MOS晶体管，并且具有与第二节点连接并被配置为接收第二输入信号的栅极。 输出P沟道MOS晶体管连接在第一电压和输出节点之间，并且具有与第二节点连接的栅极，并且输出N沟道MOS晶体管连接在输出节点和第二电压之间，并且具有提供的栅极 其输入信号具有与第一输入信号相同的极性。 P沟道MOS晶体管具有与第一节点连接的源极，与输出节点连接的漏极以及与第二节点连接的栅极。
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公开(公告)号：US06667632B2
公开(公告)日：2003-12-23
申请号：US09840129
申请日：2001-04-24
申请人： Shinichi Murakawa , Soumyo Doi , Yoshio Egashira , Tadashi Rokkaku , Shigeo Ueda
发明人： Shinichi Murakawa , Soumyo Doi , Yoshio Egashira , Tadashi Rokkaku , Shigeo Ueda
IPC分类号： G01R104
摘要： A potential sensor, includes a field effect transistor, a power supply and a switching device. The power supply supplies a direct current voltage to a gate electrode of the field effect transistor. The switching device switches between connecting the gate electrode to the power supply and disconnecting the gate electrode from the power supply. When the gate electrode is connected to the power supply, the field effect transistor is in action. When the gate electrode is disconnected from the power supply, the field effect transistor is in action.
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4.发明授权公开(公告)号：US07081908B2
公开(公告)日：2006-07-25
申请号：US10717540
申请日：2003-11-21
申请人： Shinichi Murakawa , Takashi Doi , Yoshio Egashira , Shigeo Ueda
发明人： Shinichi Murakawa , Takashi Doi , Yoshio Egashira , Shigeo Ueda
IPC分类号： G09G3/36
CPC分类号： G09G3/006 , G02F1/1309 , Y10S345/904
摘要： In a method of testing an electrode structure in which a plurality of electrodes are arranged in a matrix, a test unit is positioned at a position of a target one of the plurality of electrodes apart from the target electrode by a preset distance. The test unit has a MISFET having a source, a gate and a drain. Then, a first voltage is applied to the target electrode such that a gate voltage is induced at the gate by electrostatic induction. Also, a second voltage is applied to at least one of the source and the drain such that current flows between the source and the drain based on the gate voltage. Then, a value of the current is examined to determine an electrical connection state of the target electrode.
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5.发明授权
公开(公告)号：US5076996A
公开(公告)日：1991-12-31
申请号：US360030
申请日：1989-06-01
IPC分类号： G21C17/12
CPC分类号： G21C17/12
摘要： A system for monitoring an operating condition of a control rod drive mechanism (CRDM) having a pressure housing erectly mounted on a reactor vessel head closure, a vertically movable control rod drive shaft accommodated in the housing and an electromagnetically motive latch mechanism includes an accelerometer fitted to a housing upper end and signal recording means for receiving output signals from the accelerometer through signal processing means and recording the processed output signals. A system for monitoring and analyzing an operating condition of an electromagnetically driven CRDM having a lifting electromagnetic coil, a stationary gripper electromagnetic coil and a movable gripper electromagnetic coil includes a detector, fitted to the CRDM, for detecting vibrations caused by operation of the drive mechanism, a buffer amplifier for receiving current, and detection and control signals, a pre-processing unit for digitalizing these signals, and a processing unit for analytically processing both the current and detection signals.
摘要翻译： 一种用于监测控制棒驱动机构（CRDM）的操作状态的系统，其具有竖立地安装在反应堆容器头部封闭件上的压力壳体，容纳在壳体中的可垂直移动的控制杆驱动轴和电磁动力闩锁机构，包括加速度计 以及信号记录装置，用于通过信号处理装置接收来自加速度计的输出信号并记录经处理的输出信号。 一种用于监测和分析具有提升电磁线圈，静止夹持器电磁线圈和可动夹持器电磁线圈的电磁驱动CRDM的操作条件的系统包括安装在CRDM上的用于检测由驱动机构的操作引起的振动的检测器 用于接收电流的缓冲放大器和检测和控制信号，用于对这些信号进行数字化的预处理单元，以及用于分析处理电流和检测信号的处理单元。
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