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公开(公告)号：US20230290241A1
公开(公告)日：2023-09-14
申请号：US18300101
申请日：2023-04-13
CPC分类号： G08B21/182 , G01R11/36 , G01R33/07 , G01R33/0206
摘要： An electric utility meter including a Hall Effect sensor configured to sense a magnetic field proximate the electric utility meter. The electric utility meter also includes a controller having an electronic processor, the controller configured to receive a signal indicative of a magnitude of the magnetic field proximate the electric utility meter from the sensor, determine whether the magnitude of the magnetic field exceeds a first magnitude threshold and whether a threshold flag has been set, set the threshold flag when the threshold flag has not been set and the magnitude exceeds the first magnitude threshold, determine an amount of time for which the magnitude has exceeded the first magnitude threshold when the threshold flag has been set, and generate an alert indicative of a magnetic tamper event when the amount of time exceeds a time threshold.
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公开(公告)号：US5315536A
公开(公告)日：1994-05-24
申请号：US863716
申请日：1992-04-03
申请人： Hiroshi Murase , Kazuyuki Fukuda
发明人： Hiroshi Murase , Kazuyuki Fukuda
摘要： A meter driving system measures a period of input signals, and operates meters based on the measured period data. When no period data arrive in a preset period of time after the last period data, the lapsed time is treated as the period data so as to renew the meter indication. The meter driving system is very responsive to a signal whose frequency is gradually decreased, thereby giving the indication with little delay.
摘要翻译： 仪表驱动系统测量输入信号的周期，并根据测量的周期数据运行仪表。 当在最后期间数据之后的预设时间段内没有周期数据到达时，将经过的时间视为周期数据，以便更新仪表指示。 仪表驱动系统对频率逐渐降低的信号非常响应，从而给予指示一点延迟。
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公开(公告)号：US4633174A
公开(公告)日：1986-12-30
申请号：US636654
申请日：1984-08-01
申请人： Christian Lindig , Roland Duffait
发明人： Christian Lindig , Roland Duffait
摘要： In a crossed-coil rotating-magnet measuring instrument having an approximately cylindrical core developed as winding form, a first and second coil are wound crossed one above the other. The second coil is necessarily arranged over the first coil in the regin of the ends of the winding form and thus has a greater height of winding than the latter. Within the core there is also provided a rotating magnet whose pointer shaft is extended out of an extension of the core. In order to reduce the linearity error of this measuring instrument and to permit a reading over several quadrants, spacer means are provided on the core for guiding turns of the coil spaced from the extension of the core around the latter in a rectangular plane in each case. In combination with this, the core is developed with a large diameter in the winding region of the first coil, said diameter being of such a value with respect to the diameter of the winding region of the second coil that the average lengths of the turns of the two coils are the same.
摘要翻译： 在具有以绕组形式形成的近似圆筒形芯的交叉线圈旋转磁体测量仪器中，第一和第二线圈沿另一个上方缠绕。 第二线圈必须在绕组形式的端部的回流体中布置在第一线圈之上，因此具有比后者更大的绕组高度。 在芯体内还提供了一个旋转磁体，其指针轴从芯的延伸部伸出。 为了减小该测量仪器的线性误差并允许在多个象限上进行读数，间隔装置设置在芯部上，用于引导绕线圈的绕组的周向延伸的线圈，在每个情况下以矩形平面 。 结合这一点，在第一线圈的绕组区域中开发出具有大直径的芯，所述直径相对于第二线圈的绕组区域的直径具有这样的值：平均线圈长度 两个线圈相同。
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公开(公告)号：US3858115A
公开(公告)日：1974-12-31
申请号：US39291173
申请日：1973-08-30
发明人： GRIFFIN A
CPC分类号： G01R11/36
摘要： An induction volts-squared hour meter includes an electromagnetic section having a single coil mounted for inductively driving a rotatable conductive disc. A flux shaping member is disposed to orient the coil flux directed into the disc for rotation at a rate responsive to the square of the voltage applied across the coil.
摘要翻译： 感应伏安计时计包括具有安装成用于感应地驱动可旋转导电盘的单个线圈的电磁部分。 磁通量成形构件设置成使引导到盘中的线圈磁通以响应于施加在线圈上的电压的平方的速率旋转。
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公开(公告)号：US3657651A
公开(公告)日：1972-04-18
申请号：US3657651D
申请日：1969-06-02
发明人： ROAD RICHARD A , SCHLATTER JAMES H
CPC分类号： G01R11/36
摘要： A one-piece electric meter current circuit including integral current coil and meter connectors can be formed from a length of heavy wire. First its ends are thickened by axial thrust in a die, then flattened and shaped by transverse thrust in another die to produce integral cross work-hardened blades, with shoulders for abutting an elastomeric washer at the meter base plate. A preferred circuit piece is sharply bent adjacent the blades. The forming method not only eliminates all connections (which are potentially troublesome) within the electric meter current circuit, but moreover provides work-hardened, strengthened portions in crucial regions such as at the neck of the blades.
摘要翻译： 包括整流电流线圈和仪表连接器的一体式电表电流电路可以由一长条重线形成。 首先，其端部通过模具中的轴向推力而增厚，然后在另一个模具中通过横向推力平整并成形，以产生整体的交叉加工硬化叶片，其具有用于抵靠仪表基板处的弹性垫圈的肩部。 优选的电路片与刀片相邻地急剧弯曲。 成形方法不仅消除了电表电流回路内的所有连接（这可能是麻烦的），而且在诸如叶片的颈部的关键区域提供加工硬化的加强部分。
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公开(公告)号：US3611137A
公开(公告)日：1971-10-05
申请号：US3611137D
申请日：1969-07-09
CPC分类号： G01R11/36
摘要： A watt-hour meter for alternating current is adjusted for accuracy of measurement of light loads, and for accuracy of phasing. The former shiftable plate is replaced by a fixed plate combined with means for varying the current flow therein between different paths oppositely displaced from center, and independently as a total for phasing. The first current-varying means includes a loading coil connected in series with each of oppositely displaced paths. A magnetic core can be shifted between loading coils with opposite effects on the oppositely displaced paths while the total current remains approximately constant. The adjustment is by a screw having its head accessible from the front of the meter and provided with backlash prevention. The fixed plate advantageously has narrow portions serving as spacers in the potential magnet stack. A stainless steel strip forming a passageway for a balance screw is extended to provide relative insulation for, and to retain, each of the spacer portions.
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公开(公告)号：US3564314A
公开(公告)日：1971-02-16
申请号：US3564314D
申请日：1969-07-11
申请人： TRI TECH
发明人： HAYDON ARTHUR W
IPC分类号： G01R11/36 , G04C13/11 , G04C15/00 , H02K21/00 , H02K21/14 , H02K37/10 , H02K37/14 , H02K37/16 , H02K17/10
CPC分类号： H02K21/028 , G01R11/36 , G04C13/11 , G04C15/00 , H02K21/14 , H02K21/145 , H02K37/10 , H02K37/14 , H02K37/16 , H02K2201/12
摘要： A rotor-stator capsule for use with a field-winding to form an electric motor. The rotor of the capsule comprises a slender cylinder of permanently magnetized ferrite material, while the stator structure includes a pair of stator pole pieces at opposite ends of the rotor, each pole piece has a flat portion and two salient stator poles extending perpendicularly from the periphery of the flat portion in radially spaced relationship with the rotor. A tubular dust cover surrounding the rotor serves as a part of the shading assembly used to make the motor unidirectionally self-starting and this dust cover lies in the airgap between the rotor and the stator poles and extends axially along these poles for the length of the rotor. The shading assembly also is provided with a shading member which is interwoven with the stator poles and cooperates with the dust cover to complete the magnetic circuit.
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公开(公告)号：US3493862A
公开(公告)日：1970-02-03
申请号：US3493862D
申请日：1968-03-28
发明人： RAMSEY JAMES E JR , ZISA WILLIAM J
CPC分类号： G01R11/36
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9.发明授权Transient insensitive photoelectric impulse device for use with watthour meter to actuate demand recorder 失效瞬态不敏感光电脉冲装置，用于电度表驱动需求记录仪
公开(公告)号：US3311824A
公开(公告)日：1967-03-28
申请号：US30717063
申请日：1963-09-06
发明人： PITT PAUL E
IPC分类号： G01R11/36
CPC分类号： G01R11/36
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公开(公告)号：US3248651A
公开(公告)日：1966-04-26
申请号：US19290062
申请日：1962-05-07
发明人： MINDT FREDERICK E , ZISA WILLIAM J
IPC分类号： G01R11/36
CPC分类号： G01R11/36
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