公开(公告)号：US5493915A

公开(公告)日：1996-02-27

申请号：US282552

申请日：1994-07-29

申请人： Syok S. Lew ,  Yon S. Lew ,  Yon K Lew

发明人： Syok S. Lew ,  Yon S. Lew ,  Yon K Lew

IPC分类号： G01F1/32

CPC分类号： G01F1/3263

摘要： A torsional vortex sensor comprises an extended member disposed across a flow passage extending through a flowmeter body and experiencing a fluctuating fluid dynamic force associated with vortex shedding occurring in a stream of fluid moving through the flow passage wherein the extended member is supported by the flowmeter body in a relationship allowing at least a minute amount of pivotal movement of the extended member about a pivot axis perpendicular to the center line of the flow passage and offset from the geometrical center line of the extended member defined by a line connecting the geometrical center of every cross section of the extended member taken parallel to a plane including the center line of the flow passage, and at least one lateral extension member disposed exteriorly to the flow passage and extending from the extended member wherein the lateral extension member is connected to two force transmitting members respectively extending from two piezo electric transducers disposed respectively on two opposite sides of a plane including the pivot axis; wherein the two piezo electric transducers respectively generate two electrical signals which are combined into an alternating electrical signal representing the vortex shedding.

摘要翻译： 扭转涡流传感器包括延伸部件，该延伸部件跨越流动通道设置，该流动通道延伸穿过流量计本体并且经历与通过流动通道移动的流体流中发生的涡流脱落相关联的波动的流体动力，其中延伸部件由流量计主体 该关系允许延伸构件绕垂直于流动通道的中心线的枢转轴线的至少少量的枢转运动，并且从由连接每个的每个的几何中心的线限定的延伸构件的几何中心线偏移 所述延伸构件的横截面平行于包括所述流动通道的中心线的平面，以及设置在所述流动通道外部并从所述延伸构件延伸的至少一个侧向延伸构件，其中所述横向延伸构件连接到两个力传递 成员分别从两个压电换能器延伸d 分别设置在包括枢转轴线的平面的两个相对侧上; 其中两个压电换能器分别产生两个电信号，其被组合成代表涡流脱落的交流电信号。

公开(公告)号：US5460053A

公开(公告)日：1995-10-24

申请号：US946675

申请日：1992-09-18

申请人： Hyok S. Lew ,  Yon S. Lew ,  Yon K. Lew

发明人： Hyok S. Lew ,  Yon S. Lew ,  Yon K. Lew

IPC分类号： G01F1/84

CPC分类号： G01F1/8431 ,  G01F1/8436 ,  G01F1/8472 ,  G01F1/8477 ,  G01F1/8481 ,  G01F1/8486 ,  G01F1/8495

摘要： An electronic data processing method for determining mass flow rate of media moving through a conduit under flexural vibration comprises measuring of a first value of the first electrical signal generated by a first motion sensor located at a section of the conduit, which measurement is made at an instant determined by a triggering device activated by a zero value of the second electrical signal generated by a second motion sensor located at another section of the conduit, and measuring of a second value of the first electrical signal at another instant determined by a triggering device activated by a peak value of the second electrical signal; and determining mass flow rate of the media as a function of ratio between the first and second values of the first electrical signal by using an empirically obtained mathematical relationship that includes a term cancelling out an error introduced by a delay between the cueing of the measurement of the first electrical signal by the second electrical signal and the measuring of the first electrical signal.

摘要翻译： 一种用于确定在弯曲振动下通过导管移动的介质的质量流量的电子数据处理方法包括测量由位于导管的一部分处的第一运动传感器产生的第一电信号的第一值， 由触发装置确定的触发装置由位于导管另一部分的第二运动传感器产生的第二电信号的零值激活，以及在由触发装置激活的另一瞬间测量第一电信号的第二值 通过第二电信号的峰值; 以及通过使用经验获得的数学关系来确定作为所述第一电信号的第一和第二值之间的比率的介质的质量流率，所述经验获得的数学关系包括消除由所述测量的提示之间的延迟引入的误差 通过第二电信号的第一电信号和第一电信号的测量。

公开(公告)号：US5504789A

公开(公告)日：1996-04-02

申请号：US91269

申请日：1993-07-15

申请人： Hyok S. Lew ,  Yon S. Lew ,  Yon K. Lew

发明人： Hyok S. Lew ,  Yon S. Lew ,  Yon K. Lew

IPC分类号： G01F1/58 ,  G01F1/60 ,  G01F1/84 ,  G01R25/08 ,  G06F7/38 ,  H03K19/003

CPC分类号： G01F1/8436 ,  G01F1/588 ,  G01F1/60 ,  G01F1/8486 ,  G01R25/08

摘要： A phase angle difference between two alternating electrical signals is determined as a function of a ratio of a differential combination of two different numbers of pulse counts to an additive combination of the two different numbers of pulse counts, wherein the first of the two different numbers of pulse counts is obtained by counting a series of electric pulses generated by an electrical pulse generator in a time interval between an occurrence of zero value of the leading signal of the two alternating electrical signal and (i-1)th occurrence of zero value of the trailing signal of the two alternating electrical signals occurring after the occurrence of zero value of the leading signal, and the second of the two different numbers of pulse counts is obtained by counting the pulses in an time interval between an occurrence of zero value of the trailing signal and the (j)th occurrence of zero value of the leading signal occurring after the occurrence of zero value of the trailing signal, wherein (i) and (j) are integers; and the phase angle so determined is used to determine the mass flow rate of media by using a convective inertia force flowmeter.

摘要翻译： 两个交替电信号之间的相位角差被确定为两个不同数量的脉冲计数的差分组合与两个不同数量的脉冲计数的加法组合的比率的函数，其中两个不同数目的脉冲计数中的第一个 通过在两个交流电信号的前导信号的零值的出现与第（i-1）次的零值的出现之间的时间间隔内对由电脉冲发生器产生的一系列电脉冲进行计数来获得脉冲计数， 通过在引导信号的零值出现之后发生的两个交替电信号的尾部信号，以及两个不同数量的脉冲计数中的第二个，通过在后沿的零值的出现之间的时间间隔中对脉冲进行计数来获得 信号和发生在尾随信号的零值出现之后的前导信号的零值的第（j）次出现， 其中（i）和（j）是整数; 并且如此确定的相位角用于通过使用对流惯性力流量计来确定介质的质量流量。

公开(公告)号：US5456121A

公开(公告)日：1995-10-10

申请号：US137560

申请日：1993-10-18

申请人： Hyok S. Lew ,  Yon S. Lew ,  Yon K. Lew

发明人： Hyok S. Lew ,  Yon S. Lew ,  Yon K. Lew

IPC分类号： G01F1/10 ,  G01F1/28 ,  G01F5/00

CPC分类号： G01F5/00 ,  G01F1/106 ,  G01F1/28

摘要： A pivotable vane flowmeter comprises at least one pivotable vane disposed pivotably about a pivot axis parallel to the the direction of fluid flow and experiencing a fluid dynamic torque created by the fluid flow, a bias spring or counter-weight providing a bias torque counter-acting the fluid dynamic torque, and a rotary position sensor detecting the rotary position of the pivotable vane about the pivot axis, wherein the dynamic pressure of the fluid flow is determined as a function of the rotary position of the pivotable vane about the pivot axis, and the time rate of the fluid flow is determined from a combination of the dynamic pressure of the fluid flow and the known or measured value of the fluid density, or from another combination of the dynamic pressure of the fluid flow and the frequency of rotation of a rotating turbine or propeller installed in conjunction with the pivotable vane flowmeter.

摘要翻译： 可枢转叶片流量计包括至少一个可枢转的叶片，该枢转叶片围绕平行于流体流动方向的枢转轴线可枢转地旋转，并且经历由流体流动产生的流体动力学扭矩，偏置弹簧或配重提供偏置扭矩反作用 流体动力学扭矩和旋转位置传感器，其检测可枢转叶片围绕枢转轴线的旋转位置，其中流体流动的动态压力被确定为可枢转叶片围绕枢转轴线的旋转位置的函数，以及 流体流动的时间速率由流体流动的动态压力和流体密度的已知​​或测量值的组合确定，或者由流体流动的动态压力和旋转频率的另一组合 旋转涡轮机或螺旋桨与可转动叶片流量计一起安装。

公开(公告)号：US5450760A

公开(公告)日：1995-09-19

申请号：US172767

申请日：1993-12-27

申请人： Hyok S. Lew ,  Yon S. Lew ,  Yon K. Lew

发明人： Hyok S. Lew ,  Yon S. Lew ,  Yon K. Lew

IPC分类号： G01F1/10 ,  G01F1/28 ,  G01F5/00 ,  G01F15/00 ,  G01F1/86 ,  G01F15/02

CPC分类号： G01F1/106 ,  G01F1/28 ,  G01F5/00

摘要： A turbine flowmeter employs a capacitive rotary speed sensor comprising an electrically conductive member with a sizable surface area kinematically coupled to the rotating motion of the turbine, and a pair of stationary electrically conductive members with a sizable area disposed in a side-by-side electrically nonconducting relationship therebetween on a plane closely adjacent to a plane defined by the sizable surface area of the electrically conductive member kinematically coupled to the rotating motion of the turbine, wherein a first alternating electrical signal is supplied to one of the pair of stationary electrically conductive members and a second alternating electrical signal is taken off from the other of the pair of stationary electrically conductive members, and the flow rate of fluid is determined as a function of the frequency of fluctuation of an envelope of the second alternating electrical signal.

摘要翻译： 涡轮流量计采用电容式转速传感器，该电容式转速传感器包括具有与涡轮机的旋转运动运动耦合的相当大的表面积的导电构件，以及一对具有相当大面积的固定导电构件， 在与由涡轮机的运动耦合的导电构件的相当大的表面积限定的平面相邻的平面上的非导电关系，其中第一交流电信号被提供给一对固定导电构件 并且第二交替电信号从一对固定导电构件中的另一个中取出，并且流体的流量被确定为第二交流电信号的包络的波动频率的函数。

公开(公告)号：US5417118A

公开(公告)日：1995-05-23

申请号：US110804

申请日：1993-08-23

申请人： Hyok S. Lew ,  Yon S. Lew ,  Yon K. Lew

发明人： Hyok S. Lew ,  Yon S. Lew ,  Yon K. Lew

IPC分类号： G01F1/58 ,  G01F1/60 ,  G01F1/84 ,  G01R25/08

CPC分类号： G01R25/08 ,  G01F1/588 ,  G01F1/60

摘要： A magnetic flowmeter provides a first alternating electrical signal with at least a portion thereof comprising a first electromotive force generated by an electromagnetic interaction between an alternating magnetic field and the velocity of an electrically conductive fluid moving transversely across the alternating magnetic field, wherein the first electromotive force varies as a function of the velocity of the electrically conductive fluid, and a second alternating electrical signal with at least a portion thereof comprising a second electromotive force generated by an electromagnetic induction from the alternating magnetic field and other ambient electromagnetic field, wherein the second electromotive force is independent of the velocity of the electrically conductive fluid, and determines the velocity of the electrically conductive fluid as a function of a phase angle difference between the first and second alternating electrical signals.

摘要翻译： 磁流量计提供第一交流电信号，其至少一部分包括由交变磁场与横向交替磁场移动的导电流体的速度之间的电磁相互作用产生的第一电动势，其中第一电动势 力作为导电流体的速度的函数而变化，以及第二交变电信号，其至少一部分包括由交变磁场和其它环境电磁场通过电磁感应产生的第二电动势，其中第二 电动势与导电流体的速度无关，并且确定导电流体的速度作为第一和第二交流电信号之间的相位角差的函数。

公开(公告)号：US5501106A

公开(公告)日：1996-03-26

申请号：US152370

申请日：1993-11-16

申请人： Hyok S. Lew ,  Yon S. Lew ,  Yon K. Lew

发明人： Hyok S. Lew ,  Yon S. Lew ,  Yon K. Lew

IPC分类号： G01F1/84

CPC分类号： G01F1/8413 ,  G01F1/8472 ,  G01F1/8477 ,  G01F1/8481 ,  G01F1/8486

摘要： A mass flowmeter comprises at least one conduit supported by a frame structure in a relationship allowing an enhanced pivotal vibration about two mutually orthogonal pivot axes, an electromagnetic vibrator generating a primary pivotal vibration of the conduit about one of the two mutually orthogonal pivot axes, and a pair of vibration sensors respectively included in two opposite halves of the conduit respectively located on two opposite sides of a plane including the other of the two mutually orthogonal pivot axes; wherein the mass flow rate of media moving through the conduit is determined as a function of an electrical variable such as the phase angle difference between two alternating electrical signals respectively generated by the pair of vibration sensors, which electrical variable represents the ratio of the amplitude of the secondary pivotal vibration to the amplitude of the primary pivotal vibration.

摘要翻译： 质量流量计包括由框架结构支撑的至少一个管道，其允许围绕两个相互正交的枢转轴线的增强的枢转振动;电磁振动器，围绕两个相互正交的枢转轴线之一产生导管的初级枢转振动;以及 分别包括在分别位于包括两个相互正交的枢转轴线中的另一个的平面的两个相对侧上的导管的两个相对的两半中的一对振动传感器; 其中通过导管移动的介质的质量流率被确定为电变量的函数，诸如由一对振动传感器分别产生的两个交流电信号之间的相位角差，该电变量表示 主要枢转振动的二次枢转振动。

公开(公告)号：US4582342A

公开(公告)日：1986-04-15

申请号：US649368

申请日：1984-09-11

申请人： Hyon S. Lew ,  Yon K. Lew ,  Yon S. Lew

发明人： Hyon S. Lew ,  Yon K. Lew ,  Yon S. Lew

IPC分类号： B62K3/00 ,  B62M1/08

CPC分类号： B62M1/30 ,  B62K3/002

摘要： This invention relates to a self-propelled roller board that provides mobility for people in downtown areas, campuses and neighborhood localities. The pediroller board comprises one or two free-wheeling front wheels steerably affixed to an oblong board near one extremity thereof and a pair of rear wheels affixed to the oblong board near the other extremity wherein the rear wheels are driven by a pedal-powered gear driving a pinion gear including a ratchet drive driving the axle of the rear wheels. A person riding the pediroller board balances oneself by standing with one foot placed on the front portion of the oblong board and by holding a joystick type steering lever and propels the pediroller board by pedaling a pedal disposed near the rear extremity of the oblong board wherein the up-and-down motion of the pedal is converted to the rotating motion of the drive gear by a crank mechanism.

摘要翻译： 本发明涉及一种为市中心区，校区和邻近地区的人提供移动性的自推进辊板。 踏板板包括一个或两个可循环地固定在其一个末端附近的长方形板上的独轮前轮，以及一对固定在另一端附近的长方形板的后轮，其中后轮由踏板驱动的齿轮驱动 小齿轮包括驱动后轮轴的棘轮传动装置。 骑着踏板的人通过站立在长方形板的前部上的一只脚站立来平衡自己，并且通过握住操纵杆式转向杆并通过踩踏设置在长方形板的后端附近的踏板来推动踏板， 踏板的上下运动通过曲柄机构转换成驱动齿轮的旋转运动。

公开(公告)号：US5309771A

公开(公告)日：1994-05-10

申请号：US848291

申请日：1992-03-09

申请人： Yon S. Lew ,  Hyok S. Lew

发明人： Yon S. Lew ,  Hyok S. Lew

IPC分类号： G01F1/28 ,  G01F1/32 ,  G01F1/696

CPC分类号： G01F1/696 ,  G01F1/28 ,  G01F1/329

摘要： An electrical signal generated by a transducer included in a vortex sensor and conditioned by a preamplifier is supplied to a pair of parallel electronic filters respectively inhibiting transmission of the electrical signals with frequencies in a low and high ranges devided by a reference frequency, wherein a frequency detector detects the dominant frequency of the electrical signal and puts out control inputs depending on the dominant frequency of the electrical signal to two switches respectively controlling transmission of the electrical signal through the pair of parallel electronic filters; wherein the control input closes only one of the two switches depending on values of the dominant frequency of the electrical signal relative to the reference frequency in such a way that the electrical signal with frequencies in the low range is transmitted without the transmission of the high frequency noise and the electrical signal with frequencies in the high range is transmitted without the transmission of the low frequency noise.

摘要翻译： 由包括在涡流传感器中并由前置放大器调节的换能器产生的电信号被提供给一对并联电子滤波器，分别抑制以参考频率偏移的低频和高频范围内的频率的电信号的传输，其中频率 检测器检测电信号的主频，并根据电信号的主频输出控制输入，分别控制通过该对并联电子滤波器传输电信号的两个开关; 其中根据电信号的主频率相对于参考频率的值，控制输入仅关闭两个开关中的一个，使得在低频范围内的频率的电信号被传送而不传输高频 噪声和频率在高范围内的电信号传输而不发送低频噪声。

公开(公告)号：US5248246A

公开(公告)日：1993-09-28

申请号：US840505

申请日：1992-02-24

申请人： Hyok S. Lew ,  Yon S. Lew

发明人： Hyok S. Lew ,  Yon S. Lew

IPC分类号： F01C1/063 ,  F01C1/344 ,  G01F1/05 ,  G01F3/06 ,  G01F3/08 ,  G01F3/24

CPC分类号： F01C1/063 ,  F01C1/3445 ,  G01F1/056 ,  G01F3/06 ,  G01F3/08 ,  G01F3/24

摘要： A positive displacement fluid handling apparatus comprises a body including a closed loop tunnel with a circular cross section, laid out in an oblong geometry with two substantially semicircular sections of the tunnel respectively disposed at the two extremities thereof and respectively open to two ports, and a plurality of spherical balls with diameter closely matched to the diameter of the circular cross section of the closed loop tunnel disposed within the closed loop tunnel in a freely movable arrangement, wherein a star wheel disposed in conjunction with one of the two substantially semicircular sections of the tunnel in a rotatable arrangement about the axis of rotation disposed in a parallel and offset relationship to the central axis of radius of the substantially semicircular section of the tunnel feeds the spherical balls past the inlet port open to that substantially semicircular section of the tunnel.

摘要翻译： 一种正排量流体处理装置包括一主体，该主体包括具有圆形横截面的闭环通道，其布置成长方形几何形状，其中两个基本上为半圆形的隧道分别设置在其两端并分别敞开至两个端口， 多个球形球，其直径与设置在闭环通道内的闭环通道的圆形横截面的直径紧密匹配，可自由移动的布置，其中星形轮与两个基本上半圆形的部分中的一个 围绕围绕旋转轴线的可旋转布置的隧道以与隧道的基本上半圆形部分的半径的中心轴线平行和偏移的关系的方式进给，球体球穿过通向隧道的该基本上半圆形部分的入口。