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公开(公告)号：US4536712A
公开(公告)日：1985-08-20
申请号：US528599
申请日：1983-09-01
CPC分类号： G01R33/482
摘要： An examination method and apparatus utilizes a nuclear magnetic resonance technique in which the body of a subject to be examined is placed in a uniform static magnetic field and subjected to an electromagnetic wave having a frequency which induces nuclear magnetic resonance, a magnetic field is also applied to the subject body to specify an area of the body from which nuclear magnetic resonance (NMR) signals are radiated, and such nuclear magnetic resonance signals from the specified body area are received. A first 90.degree. pulse as the electromagnetic wave is applied to the body to excite the same, and then a 180.degree. pulse is applied to the body to produce an echo signal. A second 90.degree. pulse is to the body when the echo signal is maximum to thereby allow a magnetization to return to a state of thermal equilibrium. The foregoing sequence of the steps is repeated at prescribed intervals.
摘要翻译： 一种检查方法和装置利用核磁共振技术，其中待检查对象的身体被置于均匀的静磁场中并且经受具有诱发核磁共振的频率的电磁波，也施加磁场 指定主体以指定辐射核磁共振（NMR）信号的身体的区域，并且接收来自指定身体区域的这种核磁共振信号。 将第一个90度脉冲作为电磁波施加到身体上以激发它，然后将180度脉冲施加到身体以产生回波信号。 当回波信号最大时，第二个90度脉冲是指身体，从而允许磁化返回到热平衡状态。 以规定的间隔重复上述步骤顺序。
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公开(公告)号：US4532644A
公开(公告)日：1985-07-30
申请号：US449144
申请日：1982-12-13
摘要： A rotate/rotate type X-ray computerized tomograph system employing a single-phase transformer as a high tension voltage supply whereby the secondary voltage of the single phase transformer is rectified and applied across the anode and cathode of an X-ray tube. Such a system, advantageously, is compact and lightweight and employs components which are substantially less costly than those of the prior art.
摘要翻译： 使用单相变压器作为高压电源的旋转/旋转型X射线计算机断层摄影系统，由此单相变压器的次级电压被整流并施加在X射线管的阳极和阴极上。 有利的是，这样的系统是紧凑和重量轻的并且使用了比现有技术那些成本低得多的部件。
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公开(公告)号：US4507972A
公开(公告)日：1985-04-02
申请号：US283699
申请日：1981-07-15
申请人： Saichiro Morita
发明人： Saichiro Morita
CPC分类号： G01L9/007 , G01L13/025 , G01L19/04 , G01L9/0038 , G01L9/0072 , G01L9/04
摘要： A pressure receiving element for receiving an external pressure is attached to one end of a body and a temperature compensating diaphragm is attached to the other end of the body. A coupling shaft disposed in the body is fixed at both ends to the pressure receiving element and the diaphragm, respectively. A liquid is sealed in the body and means is provided for detecting displacement or force applied to the coupling shaft in accordance with a pressure received by the pressure receiving element. The diaphragm has corrugations of concentric circles and the crests of a plurality of them are made flat and one of the flat crests is fixed to the body. The effective area of the diaphragm inside of the flat crest that is fixed to the body is selected substantially to be equal to the effective area of the pressure receiving element.
摘要翻译： 用于接收外部压力的受压元件附接到主体的一端，并且温度补偿膜片附接到主体的另一端。 设置在主体中的联轴器分别在压力接收元件和隔膜两端固定。 液体被密封在主体中，并且设置有用于根据压力接收元件接收的压力来检测施加到联接轴的位移或力的装置。 隔膜具有同心圆的波纹，并且其多个的波峰被制成平坦的平坦的顶部中的一个固定到主体上。 固定在本体上的平坦顶部的隔膜的有效面积基本上被选择为等于受压元件的有效面积。
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公开(公告)号：US4475553A
公开(公告)日：1984-10-09
申请号：US396784
申请日：1982-07-09
申请人： Keiki Yamaguchi , Shinichi Sano , Hiromichi Akimoto , Takao Higashiizumi , Mineo Yamanaka , Takahiko Ishihara
发明人： Keiki Yamaguchi , Shinichi Sano , Hiromichi Akimoto , Takao Higashiizumi , Mineo Yamanaka , Takahiko Ishihara
CPC分类号： A61B8/0841 , A61B17/3403 , A61B8/0833 , A61B2017/3413
摘要： An ultrasonic probe, such as for use in ultrasonography, comprising a support having a front end, which may be held against a human body, and a central groove in the side thereof for guiding a puncture needle to move therethrough, and an array of rectangular ultrasonic transducer elements mounted on and lying flatwise on the front end, wherein one or more ultrasonic transducer elements are located adjacent to an open end of the groove at the front end between the other transducer elements, whereby the image display of the needle is improved.
摘要翻译： 例如用于超声检查的超声波探头，包括具有前端的支撑体，该前端可保持抵靠人体;以及位于其侧面的中心槽，用于引导穿刺针移动通过其中的矩形阵列 超声波换能器元件安装在前端上并且平坦地放置在其前端，其中一个或多个超声波换能器元件位于与其它换能器元件之间的前端处的槽的开口端附近，从而改善了针的图像显示。
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公开(公告)号：US4437350A
公开(公告)日：1984-03-20
申请号：US328078
申请日：1981-12-07
申请人： Hisashi Tamura , Ichizo Ito , Masashi Hirayama , Tetsuo Ando
发明人： Hisashi Tamura , Ichizo Ito , Masashi Hirayama , Tetsuo Ando
CPC分类号： G01F1/3245 , G01F1/3263 , Y10S73/04
摘要： A vortex flow metering apparatus comprising a sensor unit having first and second piezoelectric sensors selectively arranged in the concavity or a vortex generator having a measured fluid produce a Karman's vortex according to its velocity, a first conversion amplifier to which a signal from the first piezoelectric sensor is applied, a second conversion amplifier to which a signal from the second piezoelectric sensor is applied, an operator circuit to which outputs from the first and second conversion amplifiers are applied and which through addition or subtraction and other operations, removes noise components due to disturbance vibrations. The first and second piezoelectric sensors are selectively arranged at two points whereat stress distribution of the noise component due to disturbance vibration and stress distribution of a signal component due to vortex dynamic lift are different from each other. The invention thus has an unexpectedly high signal to noise ratio, and extraneous noise due to a variety of disturbance vibrations, is substantially eliminated.
摘要翻译： 一种涡流计量装置，包括具有选择性地布置在凹部中的第一和第二压电传感器的传感器单元或具有测量流体的涡流发生器根据其速度产生卡门涡流;第一转换放大器，来自第一压电传感器的信号 施加来自第二压电传感器的信号的第二转换放大器，施加来自第一和第二转换放大器的输出的操作电路，以及通过加法或减法等操作来除去由于扰动引起的噪声分量 振动 第一压电传感器和第二压电传感器选择性地布置在由于涡流动力升高引起的由于干扰振动和信号分量的应力分布引起的噪声分量的应力分布彼此不同的两个点处。 因此，本发明具有出乎意料的高的信噪比，并且基本上消除了由于各种扰动振动引起的外来噪声。
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公开(公告)号：US4680973A
公开(公告)日：1987-07-21
申请号：US781958
申请日：1985-09-30
IPC分类号： G01F1/60
CPC分类号： G01F1/60
摘要： In an electromagnetic flow meter converter comprising a deviation amplifier for amplifying the deviation between a feedback signal and an input signal from a flow rate detector, and a converter circuit for converting the amplified output of the deviation amplifier into a frequency signal, the improvement comprising a frequency divider for frequency dividing the frequency signal, a digital setting unit for setting the frequency dividing factor of the frequency divider, and a multiplier for multiplying the output of the frequency divider by a comparison voltage which is proportional to the current applied to the coil of the flow rate detector to provide the feedback signal, whereby the span is set digitally and whereby the compatibility between the converter and the flow rate detector is obtained by setting the product of the meter constant of the flow rate detector and a predetermined maximum flow velocity. A second embodiment uses an oscillator, frequency dividers and multipliers to adjust and expand the range of zero adjustment to a value lower than 0% and to prevent mutual interference between the zero adjustment and span adjustment.
摘要翻译： 一种电磁流量计转换器，包括用于放大反馈信号和来自流量检测器的输入信号之间的偏差的偏差放大器，以及用于将偏差放大器的放大的输出转换成频率信号的转换器电路，其改进包括： 用于分频频率信号的分频器，用于设置分频器的分频因子的数字设置单元和用于将分频器的输出乘以与施加到线圈的电流成比例的比较电压的乘法器 流量检测器，以提供反馈信号，由此跨度设置为数字，从而通过设置流量检测器的仪表常数和预定的最大流速来获得转换器和流量检测器之间的兼容性。 第二实施例使用振荡器，分频器和乘法器来将零调整范围调整和扩大到低于0％的值，并且防止零调整和量程调整之间的相互干扰。
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公开(公告)号：US4656426A
公开(公告)日：1987-04-07
申请号：US806038
申请日：1985-12-06
CPC分类号： G01R33/482 , G01R33/565
摘要： An NMR data processing method for use with an NMR tomograph, wherein signals, located in a period before and after an NMR signal to be sampled and containing substantially none of the NMR signal component, are measured as offset data for each view, so that even the offset slightly fluctuating in the view can be corrected for the NMR signal, on the basis of that data.
摘要翻译： 用于NMR层析成像的NMR数据处理方法，其中测量位于待采样的NMR信号之前和之后的周期内并且基本上不含NMR信号分量的信号作为每个视图的偏移数据被测量，使得均匀 基于该数据，可以对NMR信号校正视野中略微波动的偏移。
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公开(公告)号：US4629886A
公开(公告)日：1986-12-16
申请号：US591511
申请日：1984-03-20
申请人： Koji Akiyama , Hideto Iwaoka
发明人： Koji Akiyama , Hideto Iwaoka
CPC分类号： G01D5/38
摘要： An optical scale reader comprises a light source for radiating a beam of coherent light on a reflective scale, a half mirror for mixing light beams from the light source which are reflected and diffracted by the scale for interference with each other, an optical system for causing the interfering light beams leaving the half mirror on its opposite sides to be 90.degree. out of phase with each other so that the light beams will fall on the half mirror at a particular angle of incidence, photodetectors for detecting the interfering light beams, respectively, which have left the half mirror, and a signal processor for processing first and second electric signals which are supplied from the photodetectors and 90.degree. out of phase with each other to generate a signal indicative of the distance which the scale has moved. There is also disclosed a position control device incorporating the optical scale reader.
摘要翻译： 一种光学秤读取器，包括用于在反射比例尺上照射相干光束的光源，用于混合来自光源的光束的半反射镜，该反射镜被彼此反射和衍射的刻度尺相互干涉，用于引起 离开其相反侧的半反射镜的干涉光束彼此相差90°，使得光束以特定的入射角落在半反射镜上，分别用于检测干涉光束的光电检测器， 已经离开半反射镜的信号处理器和用于处理从光电检测器提供的第一和第二电信号并且彼此相差90°的信号处理器，以产生指示刻度尺移动的距离的信号。 还公开了一种结合光学刻度读取器的位置控制装置。
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公开(公告)号：US4594879A
公开(公告)日：1986-06-17
申请号：US544064
申请日：1983-10-21
申请人： Masato Maeda , Shuzo Kawamura
发明人： Masato Maeda , Shuzo Kawamura
摘要： A thermal conductivity detector of the type that uses an electrical bridge of four heaters with the fluid to be measured being exposed to a pair of heaters and the reference fluid being exposed to the other pair of heaters, wherein the invention improves upon this type of detector by having the fluid to be measured applied to a pair of parallel passageways in a block structure wherein a pair of heaters are contained and concurrently into bypass passageways which bypass the pair of heaters and then outputted through a common outlet; and wherein concurrently the reference fluid is applied to a pair of parallel passageways in another block structure wherein another pair of heaters are contained and concurrently to bypass passageways which bypass the second pair of heaters and then outputted through a common outlet and wherein the bypass passageways of one of the block structures are different in internal diameter from the bypass passageways in the other block structure. This invention enables rapid detection without being adversely affected by changes in quantities of fluid being measured.
摘要翻译： 使用四个加热器的电桥与要测量的流体暴露于一对加热器并且参考流体暴露于另一对加热器的热导率检测器，其中本发明改进了这种类型的检测器 通过将待测量的流体施加到块结构中的一对平行通道中，其中一对加热器被容纳并且同时成为旁路通道，旁路通道旁通一对加热器，然后通过公共出口输出; 并且其中同时将参考流体施加到另一个块结构中的一对平行通道，其中另一对加热器被容纳并且同时绕过旁路第二对加热器的通道，然后通过公共出口输出，并且其中旁路通道 块结构中的一个内径与其他块结构中的旁路通道不同。 本发明能够快速检测，而不受受测流体数量变化的不利影响。
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公开(公告)号：US4560995A
公开(公告)日：1985-12-24
申请号：US635652
申请日：1984-07-30
申请人： Tateo Suga , Hiroshi Tamura , Masaaki Taguchi , Tokio Suzuki
发明人： Tateo Suga , Hiroshi Tamura , Masaaki Taguchi , Tokio Suzuki
摘要： A recorder has a chart feed mechanism for automatically loading a chart for recording operation. By loading a chart stock storing a chart into a recorder case, discharge roller and feed roller of a chart feed means are actuated to feed the chart into a condition in which data can be recorded thereon.
摘要翻译： 记录仪具有用于自动加载用于记录操作的图表的图表进给机构。 通过将存储图表的图表库存装载到记录器壳体中，排出辊和图表进给装置的进给辊被致动以将图表馈送到可以在其上记录数据的状态。
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