公开(公告)号：US4795267A

公开(公告)日：1989-01-03

申请号：US8232

申请日：1987-01-29

申请人： Yoshitaka Amata

发明人： Yoshitaka Amata

IPC分类号： G01F1/58 ,  G01K17/06 ,  G01K17/10 ,  G01K17/16

CPC分类号： G01K17/16

摘要： A calorimeter using a remanence type electromagnetic flowmeter includes a core made of a semi-hard or hard magnetic material and having a property in which a remanent magnetic flux density is varied in proportion to a temperature, a coil excited intermittently to magnetize the core, a metallic pipe forming a fluid path, a yoke for conducting remanent magnetic flux of said core, the yoke being fixed to the outer surface of the metallic pipe in close contact therewith without forming an air gap therebetween, and a pair of electrodes attached to the inner surface of the metallic pipe through an insulator.

摘要翻译： 使用剩磁型电磁流量计的量热计包括：由半硬质或硬磁性材料构成的磁芯，其具有残留磁通密度与温度成比例地变化的特性，间歇地励磁以磁化磁芯的线圈; 形成流体路径的金属管，用于引导所述芯的剩余磁通的轭，所述轭固定在金属管的外表面上，与金属管的外表面紧密接触而不形成气隙;以及一对电极， 金属管的表面通过绝缘体。

公开(公告)号：US06508116B1

公开(公告)日：2003-01-21

申请号：US09585317

申请日：2000-06-02

申请人： Atsushi Adachi ,  Genuemon Fujita ,  Haruhito Matsushita ,  Hiroshi Kohiruimaki ,  Kazuyuki Suzuki ,  Yoshitaka Amata

发明人： Atsushi Adachi ,  Genuemon Fujita ,  Haruhito Matsushita ,  Hiroshi Kohiruimaki ,  Kazuyuki Suzuki ,  Yoshitaka Amata

IPC分类号： G01P508

CPC分类号： G01P5/086 ,  B63B35/731 ,  B63B49/00 ,  B63J2099/008 ,  G01P5/083

摘要： A water bike equipped with a speed meter wherein a speed meter sensor 1 including a coil for generating a magnetic flux and electrodes disposed at positions vertical to both flowing direction of a fluid and direction of the magnetic flux, and for measuring the speed of the water bike on water by the value of electromotive force generated by an electromagnetic induction operation, is fitted to a submerged portion of the water bike 2.

摘要翻译： 配备有速度计的水车，其中，包括用于产生磁通的线圈的速度计传感器1和设置在垂直于流体的流动方向和磁通的方向的位置处的电极，并且用于测量水的速度 通过电磁感应操作产生的电动势值，在水上骑自行车，安装在水上自行车2的淹没部分。

公开(公告)号：US4736634A

公开(公告)日：1988-04-12

申请号：US942115

申请日：1986-12-16

申请人： Yoshitaka Amata

发明人： Yoshitaka Amata

IPC分类号： G01F1/58

CPC分类号： G01F1/586

摘要： A magnetic field generating device for an electromagnetic flowmeter of the residual magnetization type which comprises a pair of first yokes having one of their end faces disposed opposite to each other on both sides of a magnetic gap including a fluid conduit of a non-magnetic material, a core disposed between the other end faces of the first yokes, a coil wound around the core, and at least one second yoke in direct contact with at least one of the first yokes and in direct contact with the associated end face of the core. The second yokes are made of a magnetic material having low electrical conductivity and high permeability. The core has an axial length shorter than that of the coil.

摘要翻译： 一种用于剩余磁化型电磁流量计的磁场产生装置，包括一对第一轭，它们的一个端面彼此相对设置在包括非磁性材料的流体导管的磁隙的两侧， 设置在第一轭铁的另一端面之间的芯体，缠绕在芯体上的线圈，以及至少一个与第一轭铁中的至少一个直接接触的第二轭铁，并与核心的相关端面直接接触。 第二轭由具有低导电性和高磁导率的磁性材料制成。 芯的轴向长度短于线圈长度。

公开(公告)号：US4601209A

公开(公告)日：1986-07-22

申请号：US722537

申请日：1985-04-12

申请人： Yoshitaka Amata

发明人： Yoshitaka Amata

IPC分类号： G01F1/60 ,  G01F1/58

CPC分类号： G01F1/586

摘要： An electromagnetic flowmeter has identical exciting coils coupled to portions which exhibit residual magnetism. A control circuit delivers short durations of current to each coil such that the current polarity in each coil determines the polarity of the magnetic flux across the conduit due to each residual magnetic portion. Four states of magnetic flux are repeatedly produced, zero, of one polarity, zero and of the other polarity. Flow note is determined by the difference between sampled voltages in a zero state and a directly succeeding state to eliminate noise components.

摘要翻译： 电磁流量计具有与表现出剩余磁性的部分耦合的相同的励磁线圈。 控制电路为每个线圈提供短的电流持续时间，使得每个线圈中的电流极性由于每个残余磁性部分决定穿过导管的磁通量的极性。 重复产生四个磁通状态，一个极性为零，另一个极性为零。 流量笔记由零状态和直接后续状态下的采样电压之间的差异决定，以消除噪声分量。