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    • 2. 发明授权
    • Ultrasonic doppler flow meter
    • 超声波多普勒流量计
    • US4905206A
    • 1990-02-27
    • US369656
    • 1989-06-20
    • Hisashi NishiyamaKageyoshi KatakuraToshio OgawaSatoshi TamanoKoji TanabeShizuo Ishikawa
    • Hisashi NishiyamaKageyoshi KatakuraToshio OgawaSatoshi TamanoKoji TanabeShizuo Ishikawa
    • G01F1/66G01S15/58
    • G01F1/663G01S15/582G01S15/584
    • A flow meter, in which pulsed continuous ultrasonic wave is transmitted towards an object at predetermined intervals T to obtain a phase vector from a reception signal of wave reflected by the object and which calculates a Doppler frequency from the average value of phase differences between phase vectors at the sampling interval T to obtain a signal indicating the speed of the object, comprising a phase difference calculator by the auto-correlation method, by which a plurality of phase difference vectors indicating phase differences between phase vectors are added, the argument of the sum vector thus obtained representing the average phase difference, or a phase difference calculator by the 2-axial-component method, by which a phase difference is divided into 2 axial components, a cosine value and a sine value, and the average phase difference is obtained by using the average value for each of the components, and a phase difference calculator by the phase difference averaging calculator, by which a plurality of phase differences are added, as they are, to obtain the average thereof, in order to obtain a phase difference average value having small errors by switching them.
    • 一种流量计,其中脉冲连续超声波以预定间隔T朝向物体传输,以从由物体反射的波的接收信号中获得相位矢量,并根据相位矢量之间的相位差的平均值计算多普勒频率 以采样间隔T,以获得指示对象速度的信号,包括通过自相关方法的相位差计算器,通过该相关方法将表示相位矢量之间的相位差的多个相位差矢量相加, 或通过2-轴分量法的相位差计算器,将相位差分成2个轴向分量,余弦值和正弦值,得到平均相位差 通过使用每个分量的平均值,以及通过相位差平均计算的相位差计算器 或者通过其相加多个相位差来获得其平均值,以便通过切换来获得具有较小误差的相位差平均值。
    • 5. 发明授权
    • Ultrasonic doppler blood flow meter
    • 超声波多普勒血流计
    • US4809703A
    • 1989-03-07
    • US101444
    • 1987-09-28
    • Shizuo IshikawaKageyoshi KatakuraToshio Ogawa
    • Shizuo IshikawaKageyoshi KatakuraToshio Ogawa
    • A61B8/06G01S15/58A61B10/00
    • G01S15/582A61B8/06
    • An ultrasonic Doppler blood flow meter comprises a transmit-receive transducer transmitting ultrasonic wave toward and into a living body and receiving an echo signal, quadrature detectors detecting a real (R) component and an imaginary (I) component of the receiving echo signal respectively, A/D converters converting analog output signals of the quadrature detectors into digital signals respectively, a converter subjecting the R and I components to quadrature transformation to generate output signals representing the absolute value and phase angle (.theta.) respectively of the received echo signal, and a signal processing circuit calculating the mean value of the differences (.DELTA..theta..sub.i =.theta..sub.i -.theta..sub.i-1) between the phase angles (.theta..sub.i) and their preceding ones (.theta..sub.i-1) detected when the ultrasonic wave is transmitted and the echo signal is received a predetermined number of times. In the signal processing circuit, the phase angle differences (.DELTA..theta.) are each resolved into an X-axis component (cos .DELTA..theta.) and a Y-axis component (sin.DELTA..theta.), and, after calculation of the mean values X and Y of n consecutive X-axis and Y-axis components respectively, the mean Doppler shift phase angle .DELTA..theta.=tan.sup.-1 (Y/X) is calculated on the basis of the calculated mean values X and Y.
    • 一种超声波多普勒血流计包括发射 - 接收传感器,其向生物体传送超声波并接收回波信号,正交检测器分别检测接收回波信号的实部(R)分量和虚部(I)分量, A / D转换器将正交检测器的模拟输出信号分别转换为数字信号,转换器对R和I分量进行正交变换,以产生表示接收到的回波信号的绝对值和相位角(θ)的输出信号,以及 信号处理电路,计算在超声波传输时检测到的相位角(θi)和它们之前的相位角(θi-1)之间的差值(ΔTATA=θi-θi-1) 回波信号被接收预定次数。 在信号处理电路中,相位角差(DELTAθ)分别被分解为X轴分量(cosDTATA)和Y轴分量(sinΔTATAθ),并且在计算平均值和上限& X 和n个连续的X轴和Y轴分量的& upbar&Y,平均多普勒频移相位角DELTAθ= tan-1(&upbar&Y /&upbar&X)是基于计算的平均值&upbar&X和&upbar&Y 。
    • 8. 发明授权
    • Rocker arm for internal combustion engine
    • 内燃机摇臂
    • US08033259B2
    • 2011-10-11
    • US12654611
    • 2009-12-24
    • Shizuo Ishikawa
    • Shizuo Ishikawa
    • F01M1/06F01L1/18
    • F01L1/18Y10T74/20882
    • A rocker arm includes a roller brought into contact with a cam to be rotated and an arm body having a storage portion for the roller. The storage portion has an opening edge including a part receiving lubricant oil flowing along an upper surface of the arm body. The part is formed with a receiving opening edge jutting out so that both widthwise ends are located away from a circumferential surface of the roller and so that a widthwise central portion comes closer to the circumferential surface of the roller. The arm body has a lubricant guide path formed by recessing the upper surface thereof and guiding the lubricant oil into the storage portion. The lubricant guide path has a width that is gradually rendered larger as the lubricant guide path gets close to the widthwise central portion of the receiving opening edge.
    • 摇臂包括与要旋转的凸轮接触的辊和具有用于辊的存储部的臂体。 存储部具有开口边缘,该开口边缘包括沿臂体的上表面流动的润滑油的部分。 该部分形成有突出的接收开口边缘,使得两个宽度端部远离辊的圆周表面定位,并且宽度方向的中心部分更靠近辊的圆周表面。 臂体具有通过使其上表面凹陷并将润滑油引导到储存部分中而形成的润滑剂引导路径。 润滑剂引导路径的宽度随着润滑剂引导路径靠近接收口边缘的宽度方向中心部而逐渐变大。
    • 10. 发明申请
    • Rocker arm for internal combustion engine
    • 内燃机摇臂
    • US20100180846A1
    • 2010-07-22
    • US12654611
    • 2009-12-24
    • Shizuo Ishikawa
    • Shizuo Ishikawa
    • F01M1/06F01L1/18
    • F01L1/18Y10T74/20882
    • A rocker arm for an internal combustion engine includes a roller brought into contact with a cam thereby to be rotated, an arm body having a storage portion in which the roller is stored, the arm body being swung by rotation of the cam, thereby opening and closing a valve. The storage portion has an opening edge located on an upper surface of the arm body and opposed to a circumferential surface of the roller, and the opening edge includes a part receiving a lubricant flowing along the upper surface of the arm body, the part being formed with a receiving opening edge jutting out so that both widthwise ends thereof are located away from the circumferential surface of the roller and so that a widthwise central portion thereof comes close to the circumferential surface of the roller.
    • 用于内燃机的摇臂包括与凸轮相接触以便旋转的辊,具有存放辊的储存部分的臂主体,臂主体通过凸轮的旋转摆动,从而打开和 关闭阀门 存储部具有位于臂主体的上表面并与辊的周面相对的开口边缘,开口边缘包括容纳沿着臂主体的上表面流动的润滑剂的部分,该部分形成 其中接收开口边缘突出,使得其宽度方向两端位于远离辊的圆周表面的位置,并且其宽度方向的中心部分靠近辊的圆周表面。