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1. 发明申请

US20070220993A1 Electromagnetic Flowmeter 有权
标题翻译：电磁流量计
公开(公告)号：US20070220993A1
公开(公告)日：2007-09-27
申请号：US11578209
申请日：2005-04-08
申请人： Tomoshige Yamamoto
发明人： Tomoshige Yamamoto
IPC分类号： G01F1/60
CPC分类号： G01F1/588 , G01F1/60
摘要： An electromagnetic flowmeter includes a measuring tube (1) through which a fluid to be measured flows, electrodes (2a, 2b) which detect an electromotive force generated by a magnetic field applied to the fluid and the flow of the fluid, an exciting coil (3) which applies, to the fluid, a time-changing magnetic field asymmetrical to a plane (PLN) which includes the electrodes (2a, 2b) and is perpendicular to the axial direction of the measuring tube, a signal conversion unit (5) which extracts a ∂A/∂t component from the resultant electromotive force of the electromotive force based on the ∂A/∂t component irrelevant to the flow velocity of the fluid and the electromotive force based on a v×B component originating from the flow velocity of the fluid, which are detected by the electrodes (2a, 2b), and a flow rate output unit (6) which removes a variation factor for a span as a coefficient applied to the magnitude (V) of the flow velocity of the v×B component in the resultant electromotive force, on the basis of the ∂A/∂t component, and calculates the flow rate of the fluid from the result obtained by removing the variation factor.
摘要翻译：电磁流量计包括测量流体流过的测量管（1），检测由施加到流体的磁场产生的电动势和流体流动的电极（2a，2b），激发线圈（3），其向流体施加与包括电极（2a，2b）并且垂直于测量管的轴向的平面（PLN）不对称的时变磁场，信号转换单元（5），其基于与流体的流速无关的∂A/∂t分量和基于源自于的流体的vxB分量的电动势从电动势的合成电动势中提取∂A/∂t分量由电极（2a，2b）检测到的流体的流速和流量输出单元（6），该流量输出单元（6）除去应用于量程（V）的系数的跨度的变化因子 vxB组件的流速基于∂A/∂t分量得到的电动势，并根据通过去除变化因子获得的结果计算流体的流量。

2. 发明申请

US20070088511A1 Electromagnetic flowmeter 有权
标题翻译：电磁流量计
公开(公告)号：US20070088511A1
公开(公告)日：2007-04-19
申请号：US11582474
申请日：2006-10-16
申请人： Tomoshige Yamamoto
发明人： Tomoshige Yamamoto
IPC分类号： G01F1/00
CPC分类号： G01F1/584 , G01F1/60
摘要： An electromagnetic flowmeter includes a measuring tube, an electrode, an exciting unit, a signal conversion unit, and a flow rate calculating unit. The signal conversion unit extracts a ∂A/∂t component irrelevant to a flow velocity of the fluid and a v×B component originating from the flow velocity of the fluid from a resultant electromotive force of an electromotive force based on the ∂A/∂t component and an electromotive force based on the v×B component, with A, t, v, and B respectively representing a vector potential, a time, a flow velocity, and a magnetic flux density. The flow rate calculating unit extracts a variation component dependent on a parameter from the ∂A/∂t component extracted by the signal conversion unit, corrects a span which is a coefficient applied to a magnitude V of the flow velocity of the v×B component input from the signal conversion unit on the basis of the variation component, and calculates the flow rate of the fluid from the v×B component whose span is corrected, the parameter being at least one of a characteristic and state of the fluid and a state in the measuring tube which are independent of the flow rate of the fluid.
摘要翻译：电磁流量计包括测量管，电极，激励单元，信号转换单元和流量计算单元。信号转换单元从基于∂A/∂t分量的电动势的合成电动势提取与流体的流速无关的∂A/∂t分量和源自流体的流速的vxB分量以及基于vxB分量的电动势，A，t，v和B分别表示矢量电位，时间，流速和磁通密度。流量计算单元从由信号转换单元提取的∂A/∂t分量中提取取决于参数的变化分量，校正作为从输入的vxB分量的流速的幅度V的系数的跨度所述信号转换单元基于所述变化分量，并且计算来自所述校正范围的所述vxB分量的所述流体的流量，所述参数是所述流体的特性和状态以及所述测量管中的状态中的至少一个其独立于流体的流速。

3. 发明授权

US07434478B2 Electromagnetic flowmeter for applying a magnetic field and a plurality of frequency components to a fluid 有权
标题翻译：用于向流体施加磁场和多个频率分量的电磁流量计
公开(公告)号：US07434478B2
公开(公告)日：2008-10-14
申请号：US11578208
申请日：2005-04-08
申请人： Tomoshige Yamamoto
发明人： Tomoshige Yamamoto
IPC分类号： G01F1/58
CPC分类号： G01F1/60 , G01F1/56 , G01F1/58 , G01F25/0007
摘要： An electromagnetic flowmeter includes a measuring tube through which a fluid flows, electrodes which detect an electromotive force generated by a magnetic field applied to the fluid. An exciting coil applies, to the fluid, a magnetic field asymmetrical to a plane (PLN) which includes the electrodes and is perpendicular to the axial direction of the measuring tube. A signal conversion unit extracts a ∂A/∂t component from the resultant electromotive force of the electromotive force. A flow rate output unit removes a variation factor for a span as a coefficient applied to the magnitude of the flow velocity on the basis of the ∂A/∂t component, and calculates the flow rate of the fluid from the result obtained by removing the variation factor. The exciting coil applies the magnetic fields including the plurality of frequency components to the fluid.
摘要翻译：电磁流量计包括流体流过的测量管，检测由施加到流体的磁场产生的电动势的电极。激励线圈向流体施加与包括电极并垂直于测量管的轴向的平面（PLN）不对称的磁场。信号转换单元从电动势的合成电动势中提取∂A/∂t分量。流量输出单元根据∂A/∂t分量除去应用于流速大小的系数的跨度的变化因子，并根据通过除去所得到的结果计算流体的流量变异因子励磁线圈将包括多个频率分量的磁场施加到流体。

4. 发明授权

US07426874B2 Electromagnetic flowmeter with measuring tube 有权
标题翻译：带测量管的电磁流量计
公开(公告)号：US07426874B2
公开(公告)日：2008-09-23
申请号：US11578209
申请日：2005-04-08
申请人： Tomoshige Yamamoto
发明人： Tomoshige Yamamoto
IPC分类号： G01F1/58
CPC分类号： G01F1/588 , G01F1/60
摘要： An electromagnetic flowmeter includes a measuring tube through which a fluid to be measured flows, electrodes which detect an electromotive force generated by a magnetic field applied to the fluid. An exciting coil applies, to the fluid, a time-changing magnetic field asymmetrical to a plane (PLN) which includes the electrodes and is perpendicular to the axial direction of the measuring tube. A signal conversion unit extracts a ∂A/∂t component from the resultant electromotive force of the electromotive force. A flow rate output unit removes a variation factor for a span as a coefficient applied to the magnitude of the flow velocity on the basis of the ∂A/∂t component, and calculates the flow rate of the fluid from the result obtained by removing the variation factor.
摘要翻译：电磁流量计包括测量流体流过的测量管，检测由施加到流体的磁场产生的电动势的电极。励磁线圈向流体施加与包括电极并垂直于测量管的轴向的平面（PLN）不对称的时变磁场。信号转换单元从电动势的合成电动势中提取∂A/∂t分量。流量输出单元根据∂A/∂t分量除去应用于流速大小的系数的跨度的变化因子，并根据通过除去所得到的结果计算流体的流量变异因子

5. 发明申请

US20070272030A1 Electromagnetic Flowmeter 有权
标题翻译：电磁流量计
公开(公告)号：US20070272030A1
公开(公告)日：2007-11-29
申请号：US11578208
申请日：2005-04-08
申请人： Tomoshige Yamamoto
发明人： Tomoshige Yamamoto
IPC分类号： G01F1/60
CPC分类号： G01F1/60 , G01F1/56 , G01F1/58 , G01F25/0007
摘要： An electromagnetic flowmeter includes a measuring tube (1) through which a fluid flows, electrodes (2a, 2b) which detect an electromotive force generated by a magnetic field applied to the fluid and the flow of the fluid, an exciting coil (3) which applies, to the fluid, a magnetic field asymmetrical to a plane (PLN) which includes the electrodes (2a, 2b) and is perpendicular to the axial direction of the measuring tube, a signal conversion unit (5) which extracts a ∂A/∂t component from the resultant electromotive force of the electromotive force based on the ∂A/∂t component irrelevant to the flow velocity of the fluid and the electromotive force based on a v×B component originating from the flow velocity of the fluid, which are detected by the electrodes (2a, 2b), and a flow rate output unit (6) which removes a variation factor for a span as a coefficient applied to the magnitude of the flow velocity of the v×B component in the resultant electromotive force, on the basis of the ∂A/∂t component, and calculates the flow rate of the fluid from the result obtained by removing the variation factor. The exciting coil applies the magnetic fields including the plurality of frequency components to the fluid.
摘要翻译：电磁流量计包括流体流过的测量管（1），检测施加到流体的磁场和流体的流动产生的电动势的电极（2a，2b），励磁线圈（3）），其向所述流体施加与包括所述电极（2a，2b）并且垂直于所述测量管的轴向的平面（PLN）不对称的磁场;提取的信号转换单元（5）基于与流体的流速无关的∂A/∂t分量的电动势的合成电动势的∂A/∂t分量和基于源自流体的流速的vxB分量的电动势，其被电极（2a，2b）检测，并且流量输出单元（6）除去作用于所产生的vxB分量的流速的大小的系数，作为跨度的变化因子电动势，o 在∂A/∂t分量的基础上，从通过去除变异系数得到的结果计算流体的流量。励磁线圈将包括多个频率分量的磁场施加到流体。

6. 发明授权

US08453516B2 Electromagnetic flowmeter with automatic span correction 有权
标题翻译：具有自动量程校正的电磁流量计
公开(公告)号：US08453516B2
公开(公告)日：2013-06-04
申请号：US12873503
申请日：2010-09-01
申请人： Tomoshige Yamamoto
发明人： Tomoshige Yamamoto
IPC分类号： G01F1/58
CPC分类号： G01F1/584 , G01F1/586 , G01F1/60
摘要： An electromagnetic flowmeter comprises a measuring pipe through which fluid to be measured flows, an electrode provided therein, an exciting unit, a signal line, a signal conversion unit that extracts a ∂A/∂t component that results from a change in the magnetic field from a resultant electromotive force of an electromotive force of the ∂A/∂t component; and an electromotive force of a v×B component that results from a flow speed of the fluid, wherein the resultant electromotive force is detected by the electrode and the signal line; and a flow rate output unit that eliminates, based on the extracted ∂A/∂t component, a variation factor as to a span that is a coefficient applied to a magnitude V of a flow speed of the v×B component in the resultant electromotive force so as to calculate a flow rate of the fluid.
摘要翻译：电磁流量计包括测量流体流过的测量管，设置在其中的电极，激励单元，信号线，信号转换单元，其提取由磁场变化引起的∂A/∂t分量从∂A/∂t分量的电动势的合成电动势; 以及由流体的流速导致的v×B分量的电动势，其中所得到的电动势由电极和信号线检测; 以及流量输出单元，其基于提取的∂A/∂t分量消除作为所得到的电动势中的v×B分量的流速的幅度V的系数的跨度的变化系数以计算流体的流量。

7. 发明授权

US07487052B2 State detection device 有权
标题翻译：状态检测装置
公开(公告)号：US07487052B2
公开(公告)日：2009-02-03
申请号：US11662306
申请日：2005-09-21
申请人： Tomoshige Yamamoto
发明人： Tomoshige Yamamoto
IPC分类号： G06F19/00 , G01N11/00 , G01L7/00
CPC分类号： G01F1/60 , G01F1/584 , G01F23/26 , G01N27/72
摘要： An exciting unit, applies, to a fluid, a time-changing magnetic field asymmetrical to a plane (PLN). An electrode is placed on the plane in a measuring tube, and detects a resultant electromotive force of an electromotive force based on ∂A/∂t component (A: vector potential, t: time) irrelevant to a flow velocity of the fluid and an electromotive force based on a v×B component originating from the flow velocity of the fluid. A state quantifying unit extracts the ∂A/∂t component and a variation factor dependent on a parameter to be detected, and quantifies the parameter on the basis of the variation factor. The characteristic and state of the fluid and the state in the measuring tube can be detected regardless of the flow rate of the fluid by using the same hardware arrangement as that of an electromagnetic induction type flowmeter.
摘要翻译：一个令人兴奋的单元，适用于流体，与平面不对称的时变磁场（PLN）。电极被放置在测量管中的平面上，并且基于与流体的流速无关的∂A/∂t分量（A：矢量电位，时间）检测电动势的合成电动势，以及基于源自流体流速的vxB分量的电动势。状态量化单元根据所检测的参数提取∂A/∂t分量和变化因子，并根据变化因子量化参数。通过使用与电磁感应式流量计相同的硬件配置，可以检测流体的特性和状态以及测量管中的状态，而与流体的流量无关。

8. 发明授权

US06865956B2 Electromagnetic flowmeter 有权
标题翻译：电磁流量计
公开(公告)号：US06865956B2
公开(公告)日：2005-03-15
申请号：US10490570
申请日：2002-09-20
申请人： Tomoshige Yamamoto
发明人： Tomoshige Yamamoto
IPC分类号： G01F1/58
CPC分类号： G01F1/586 , G01F1/588
摘要： When a plane (PLN) which includes electrodes (2a, 2b) and is perpendicular to the direction of an axis (PAX) of a measuring pipe (1) is defined as a boundary in the measuring pipe (1), an exciting coil (3) applies asymmetrical magnetic fields to a fluid to be measured, which flows through the measuring pipe (1), on both sides of the plane (PLN) serving as the boundary in the measuring pipe (1). A signal conversion unit (5) obtains the phase difference between an exciting current supplied to the exciting coil (3) and an interelectrode electromotive force detected by the electrodes (2a, 2b). A flow rate output unit (6) calculates the flow rate of the fluid on the basis of the phase difference obtained by the signal conversion unit (5).
摘要翻译：当将包括电极（2a，2b）并且垂直于测量管（1）的轴线（PAX）的平面（PLN）定义为测量管（1）中的边界时，激励线圈 3）对作为测量管（1）中的边界的平面（PLN）的两侧的流过测量管（1）的被测量流体施加非对称磁场。信号转换单元（5）获得提供给励磁线圈（3）的励磁电流与由电极（2a，2b）检测的电极间电动势之间的相位差。流量输出单元（6）基于由信号转换单元（5）获得的相位差来计算流体的流量。

9. 发明授权

US08136412B2 Electromagnetic flowmeter 有权
标题翻译：电磁流量计
公开(公告)号：US08136412B2
公开(公告)日：2012-03-20
申请号：US12877266
申请日：2010-09-08
申请人： Tomoshige Yamamoto , Daisuke Akita , Yoshio Yamazaki , Kenji Yao
发明人： Tomoshige Yamamoto , Daisuke Akita , Yoshio Yamazaki , Kenji Yao
IPC分类号： G01F1/58
CPC分类号： G01F1/588 , G01F1/58 , G01F1/60
摘要： An electromagnetic flowmeter includes a measuring tube, electrodes, an exciting coil for applying, to a fluid, a time-changing magnetic field asymmetrical with respect to a plane PLN, a signal conversion unit which extracts a ∂A/∂t component, irrelevant to a fluid flow velocity, from a resultant electromotive force of an electromotive force based on the ∂A/∂t component and an electromotive force based on a v×B component originating from the flow velocity of the fluid, a flow rate output unit which removes a variation factor for a span as a coefficient applied to a magnitude V of a flow velocity of the v×B component in the resultant electromotive force, based on the extracted ∂A/∂t component, and calculates a flow rate of the fluid from a result obtained by removing the variation factor, and signal lines inclined with respect to a direction of the magnetic field in parallel with the plane PLN.
摘要翻译：电磁流量计包括测量管，电极，用于向流体施加相对于平面PLN不对称的时变磁场的激励线圈，提取与ΛA/∂t分量不相关的∂A/∂t分量的信号转换单元来自基于∂A/∂t分量的电动势的合成电动势的流体流动速度和源自流体的流速的基于av×B分量的电动势，流量输出单元，其移除基于所提取的∂A/∂t分量，跨度的变化系数作为施加到所得到的电动势中的v×B分量的流速的幅度V的系数，并且计算来自通过去除变化因子获得的结果，以及相对于与平面PLN平行的磁场方向倾斜的信号线。

10. 发明授权

US08037774B2 State detection device 有权
标题翻译：状态检测装置
公开(公告)号：US08037774B2
公开(公告)日：2011-10-18
申请号：US12874603
申请日：2010-09-02
申请人： Tomoshige Yamamoto
发明人： Tomoshige Yamamoto
IPC分类号： G01F1/58
CPC分类号： G01F1/584 , G01F1/586 , G01F1/60
摘要： A state detection device which detects parameters includes a measuring pipe, electrodes, an exciting coil that applies a magnetic field to the fluid, signal lines arranged at angle to the magnetic field such that an electromotive force is generated due to a change with passage of time in the magnetic field, and a state quantifying unit for extracting a ∂A/∂t component from resultant electromotive forces that are detected at the electrodes and the signal lines and are composed of an electromotive force of the ∂A/∂t component irrelevant to a flow velocity of the fluid and resulting from a change with passage of time in the magnetic field and an electromotive force of a v×B component relevant to the flow velocity of the fluid, and extracts a variation factor relevant to the parameter from the ∂A/∂t component to quantify the parameter based on the variation factor.
摘要翻译：检测参数的状态检测装置包括测量管，电极，向流体施加磁场的激励线圈，与磁场成角度地设置的信号线，使得由于随时间的变化而产生电动势以及状态量化单元，用于从在电极和信号线检测到的合成电动势提取∂A/∂t分量，并且由与ΑA/∂t分量无关的电动势流体的流速和由磁场中随时间推移的变化以及与流体的流速相关的av×B分量的电动势，并且从∂A提取与参数相关的变化因子 /∂t分量，以根据变化因子量化参数。

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