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公开(公告)号：US5668693A
公开(公告)日：1997-09-16
申请号：US670085
申请日：1996-06-25
CPC分类号： H01H47/002 , H01F2007/185 , H01H47/325
摘要： A varying voltage is applied across a coil of a contactor. The varying voltage has a characteristic (frequency) which varies as a function of the position of the armature. The varying voltage is transmitted to a coupler which transmits information to a controller. The coupler may include one or more light sources (LEDs) which are sequentially energized and de-energized to sequentially render a phototransistor conducting and nonconducting. The frequency of the output from the coupler corresponds to the frequency at which the phototransistor is changed between the conducting and nonconducting conditions. A controller determines whether the frequency of the output from the coupler corresponds to the intended position of the armature of the contactor or to an unintended position by comparing the frequency of the output from the coupler to known frequencies for various positions of the armature.
摘要翻译： 在接触器的线圈上施加变化的电压。 变化的电压具有作为电枢位置的函数而变化的特性（频率）。 变化的电压被发送到向控制器发送信息的耦合器。 耦合器可以包括一个或多个光源（LED），其被依次通电和断电以顺序地使光电晶体管导通和不导电。 耦合器的输出频率对应于光电晶体管在导通条件和非导通条件之间变化的频率。 控制器通过将电枢的各个位置的耦合器的输出频率与已知频率进行比较来确定来自耦合器的输出的频率是否对应于接触器的电枢的预期位置或非预期位置。
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公开(公告)号：US4857837A
公开(公告)日：1989-08-15
申请号：US139352
申请日：1987-12-29
申请人： Mich S. Baran , Bruce C. Beihoff , Michael A. Damiano , James E. Hansen , Jerome K. Hastings , Allen J. Slomczewski , Charles J. Tennies
发明人： Mich S. Baran , Bruce C. Beihoff , Michael A. Damiano , James E. Hansen , Jerome K. Hastings , Allen J. Slomczewski , Charles J. Tennies
CPC分类号： G01R1/06766 , G01R15/205
摘要： The present invention is a current sensor employing a magneto resistive sensor having high fidelity of output. This current sensor includes a magnetic flux concentrator substantially encircling the electrical conductor having magnetic sensing, a magnetic device generating a magnetic field component along an axis offset from the principle axis, a magneto resistive device disposed in the magnetic sensing region, a constant current source supplying a predetermined constant current to said magneto resistive device, and a voltage sensing circuit connected to said magneto resistive device for measuring resistance by measuring a difference voltage induced by said constant current. This measured voltage corresponds to the current through the conductor. The magneto resistive device is formed as a Wheatstone bridge having a first and second pair of opposite terminals. The constant current source provides a predetermined constant current whereby the change with temperature in the differential voltage between said second pair of terminals is equal and opposite to the change in voltage of the total bridge resistance with temperature and the change in the bridge offset voltage with temperature.
摘要翻译： 本发明是采用具有高保真输出的磁阻传感器的电流传感器。 该电流传感器包括基本上环绕具有磁感测的电导体的磁通量集中器，沿着与主轴偏离的轴产生磁场分量的磁性装置，设置在磁感应区域中的磁阻元件，恒流源 向所述磁阻器件施加预定的恒定电流，以及连接到所述磁阻器件的电压检测电路，用于通过测量由所述恒定电流引起的差值电压来测量电阻。 该测量电压对应于通过导体的电流。 磁阻电阻器形成为具有第一和第二对相对端子的惠斯通电桥。 恒定电流源提供预定的恒定电流，由此在所述第二对端子之间的差分电压中随温度的变化等于并且与总桥电阻随温度变化的电压和桥接偏移电压随温度的变化相反 。
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3.发明授权Current transformer using a laminated toroidal core structure and a lead frame 失效电流互感器使用层叠环形芯结构和引线框架
公开(公告)号：US5430613A
公开(公告)日：1995-07-04
申请号：US69338
申请日：1993-06-01
申请人： Jerome K. Hastings , Bruce C. Beihoff , James E. Hansen , Mark A. Juds , Steven C. Kaishian , Charles J. Tennies
发明人： Jerome K. Hastings , Bruce C. Beihoff , James E. Hansen , Mark A. Juds , Steven C. Kaishian , Charles J. Tennies
CPC分类号： H01F41/16 , H01F1/0027 , H01F17/0033 , H01F2027/2814 , H01F2038/305 , Y10T29/4902 , Y10T29/49073 , Y10T29/49078 , Y10T29/4981
摘要： A current transformer device is formed on a ceramic substrate which is provided with a plurality of planar conductive tracks formed on a surface of the substrate where the conductive tracks extend substantially radially from an imaginary point on the surface of the substrate. A structure of permeable material layers is then tape cast or epitaxially formed by vapor deposition of a thick film of magnetic ceramic over the major portion of each of the conductive tracks to form a permeable toroidal core. A lead frame is then placed over the core and a plurality of metal conductors are soldered to each of the respective exposed ends of the metal conductive tracks on the substrate to form a toroidal coil surrounding the toroidal core. The required electrical elements to complete the current transformer device are mounted to a second side of the ceramic substrate and electrically connected to the toroidal coil for powering and/or receiving signals therefrom.
摘要翻译： 电流互感器装置形成在陶瓷基片上，该陶瓷基片上设有形成在基片表面上的多个平面导电迹线，导电迹线从基片表面的假想点基本径向延伸。 然后通过在每个导电轨道的主要部分上蒸镀一层厚厚的磁性陶瓷，将可渗透材料层的结构胶带或外延形成，以形成可渗透的环形芯。 然后将引线框放置在芯上，并且将多个金属导体焊接到衬底上的金属导电轨道的相应暴露端中的每一个，以形成环绕环形芯的环形线圈。 完成电流互感器装置的所需电气元件安装在陶瓷基片的第二侧上，并电连接到环形线圈，用于向其提供和/或接收信号。
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公开(公告)号：US5185685A
公开(公告)日：1993-02-09
申请号：US676741
申请日：1991-03-28
申请人： Charles J. Tennies , Bruce C. Beihoff , Jerome K. Hastings , Robert J. Clarey , Walter K. O'Neil
发明人： Charles J. Tennies , Bruce C. Beihoff , Jerome K. Hastings , Robert J. Clarey , Walter K. O'Neil
CPC分类号： H02H1/0015
摘要： An arc detection method and apparatus is provided for an electric circuit having an electrified conductor (46) connecting a voltage source (26) to a load (30). The system senses the electromagnetic field established about the conductor by the occurrence of an electrical arc in the electric circuit, and generates a field responsive signal. Arc discrimination circuitry responding to the field responsive signal and generates an arc indicative signal in response to a given characteristic of the field responsive signal. The system includes an E field sensor (66) and a B field sensor (68).
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5.发明授权Current transformer using a laminated toroidal core structure and a lead frame 失效电流互感器使用层叠环形芯结构和引线框架
公开(公告)号：US5425166A
公开(公告)日：1995-06-20
申请号：US277403
申请日：1994-07-19
申请人： Jerome K. Hastings , Bruce C. Beihoff , James E. Hansen , Mark A. Juds , Steven C. Kaishian , Charles J. Tennies
发明人： Jerome K. Hastings , Bruce C. Beihoff , James E. Hansen , Mark A. Juds , Steven C. Kaishian , Charles J. Tennies
CPC分类号： H01F41/16 , H01F1/0027 , H01F17/0033 , H01F2027/2814 , H01F2038/305 , Y10T29/4902 , Y10T29/49073 , Y10T29/49078 , Y10T29/4981
摘要： A current transformer device is formed on a ceramic substrate which is provided with a plurality of planar conductive tracks formed on a surface of the substrate where the conductive tracks extend substantially radially from an imaginary point on the surface of the substrate. A structure of permeable material is then tape cast or epitaxially formed by vapor deposition of a thick film of magnetic ceramic over the major portion of each of the conductive tracks to form a permeable toroidal core. A lead frame is then placed over the core and a plurality of metal conductors are soldered to each of the respective exposed ends of the metal conductive tracks on the substrate. The required electrical elements to complete the current transformer device are mounted to a second side of the ceramic substrate and electrically connected to the toroidal coil for powering and/or receiving signals therefrom.
摘要翻译： 电流互感器装置形成在陶瓷基片上，该陶瓷基片上设有形成在基片表面上的多个平面导电迹线，导电迹线从基片表面的假想点基本径向延伸。 然后通过在每个导电轨道的主要部分上蒸镀一层厚厚的磁性陶瓷，将可渗透材料的结构胶带或外延形成，以形成可渗透的环形芯。 然后将引线框架放置在芯上，并且将多个金属导体焊接到衬底上的金属导电轨道的相应的暴露端中的每一个。 完成电流互感器装置的所需电气元件安装在陶瓷基片的第二侧上，并电连接到环形线圈，用于向其提供和/或接收信号。
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公开(公告)号：US5206596A
公开(公告)日：1993-04-27
申请号：US676781
申请日：1991-03-28
CPC分类号： H02H1/0015
摘要： An arc detector antenna transducer (62) for an electric circuit has an electrified conductor (46) connecting a voltage source (26) to a load (30). The arc detector transducer includes an E field sensor (66) sensing the E field established about the conductor by the occurrence of an electrical arc in the circuit, and a B field sensor (68) sensing the B field established about the conductor by the occurrence of the electrical arc in the circuit.
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公开(公告)号：US5754387A
公开(公告)日：1998-05-19
申请号：US663475
申请日：1996-06-13
CPC分类号： H01H47/002
摘要： Upon initiation of operation of a contactor from an unactuated condition to an actuated condition, the maximum magnitude of an initial current conducted to the coil of the contactor is determined. Once the contactor has been operated to the closed condition, the holding current is checked to determine if it exceeds a reference current. The reference current is a predetermined function of the maximum initial current. If the reference current is less than the holding current, a malfunction signal is provided. In another embodiment of the invention, a sensor is provided to sense the position of movable contacts connected with an armature of the contactor.
摘要翻译： 当接触器从未致动状态开始操作到致动状态时，确定传导到接触器的线圈的初始电流的最大幅度。 一旦接触器已经操作到关闭状态，检查保持电流以确定其是否超过参考电流。 参考电流是最大初始电流的预定函数。 如果参考电流小于保持电流，则提供故障信号。 在本发明的另一个实施例中，提供传感器以感测与接触器的电枢连接的可动触点的位置。
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公开(公告)号：US5208542A
公开(公告)日：1993-05-04
申请号：US676742
申请日：1991-03-28
CPC分类号： H02H1/0015
摘要： An arc detection method and apparatus is provided for an electric circuit having an electrified conductor (46) connecting a voltage source (26) to a load (30). The arc detector includes a field sensor (62) sensing an electromagnetic field established about the conductor by the occurrence of an electrical arc in the circuit, and generating a field responsive signal in response thereto. Arc discrimination circuitry responds to the field sensor and generates a tentative arc signal in response to a given characteristic of the field responsive signal. Arc timing window circuitry responds to the arc discrimination circuitry and generates a confirmed arc signal in response to a given timing characteristic of the tentative arc signal.
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公开(公告)号：US5185687A
公开(公告)日：1993-02-09
申请号：US676739
申请日：1991-03-28
CPC分类号： H02H1/0015
摘要： An arc detection method and apparatus is provided for an electric circuit having an electrified conductor (46) connecting a voltage source (26) to a load (30). The arc detector includes a field sensor (62) sensing an electromagnetic field established about the conductor by the occurrence of an electrical arc in the electric circuit, and generating a field responsive signal in response thereto. Arc discrimination circuitry responds to the field sensor and generates an arc indicative signal in response to a random chaotic pattern of the field responsive signal.
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公开(公告)号：US5561605A
公开(公告)日：1996-10-01
申请号：US438464
申请日：1995-05-10
CPC分类号： G01R31/025 , H02H1/0015 , H02H3/44 , H02H1/04
摘要： In an electric circuit supplying AC line current to a load (30, 31) from an AC source (26) of given frequency providing repetitive cycles, arc detection is provided by sensing cycle to cycle changes in the AC line current. The AC line current is sampled with a harmonic notch filter (72) at a plurality of n phases .THETA..sub.1 through .THETA..sub.n during each of a plurality of m cycles of the AC source (26), to provide a plurality of currents I.sub.n,m, where n is the phase and m is the cycle. The differences (I.sub.n,m)-(I.sub.n,m-x), where x is a designated number of cycles, provide a plurality of current difference signals. The absolute values of these current difference signals ID are accumulated in a synchronous summer (94) over the m cycles. An arc indicative signal is generated in response to given conditions and given combinations of conditions (116) of the cumulative absolute current difference signals ID. Cycle to cycle changes in AC line voltage are also sensed with a harmonic notch filter (146), and the arc indicative signal is disarmed in response to a given voltage condition. In further embodiments, subcycle changes are sensed.
摘要翻译： 在从提供重复周期的给定频率的AC源（26）向负载（30,31）提供AC线路电流的电路中，通过感测周期来循环改变AC线路电流来提供电弧检测。 在AC源（26）的多个m个周期的每一个期间，在多个n相THETA 1至THETA n处的谐波陷波滤波器（72）对AC线路电流进行采样，以提供多个电流In，m ，其中n是相位，m是周期。 差异（In，m） - （In，m-x），其中x是指定的周期数，提供多个电流差信号。 这些电流差信号ID的绝对值在m个周期的同步夏（94）中累加。 响应于给定条件和累积绝对电流差信号ID的条件（116）的给定组合，产生电弧指示信号。 还用谐波陷波滤波器（146）感测到交流线路电压的周期变化，并且响应于给定的电压条件来撤消电弧指示信号。 在另外的实施例中，感测到子周期变化。
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