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1.发明授权Process variable transmitter with two-wire process control loop diagnostics 有权具有二线过程控制回路诊断功能的过程变量变送器公开(公告)号：US09182256B2
公开(公告)日：2015-11-10
申请号：US12832341
申请日：2010-07-08
CPC分类号： G01D21/00 , G05B19/0423 , G05B2219/24069
摘要： A two-wire process variable transmitter for use in an industrial process, including a process variable sensor configured to sense a process variable of a fluid of the industrial process. Output circuitry is configured to provide an output on a two-wire process control loop which is related to the sensed process variable. Loop current measurement circuitry measures a loop current flowing through the two-wire process control loop and terminal voltage measurement circuitry measures a voltage related to a terminal voltage of the process variable transmitter. The terminal voltage can be a voltage measured across an electrical connection of the two-wire process variable transmitter to the two-wire process control loop. Input circuitry is configured to receive a diagnostic command from the two-wire process control loop. A microprocessor configured to perform loop diagnostics on the two-wire process control loop based upon the measured loop current and terminal voltage in response to receipt of a diagnostic command from the two-wire process control loop.
摘要翻译： 一种用于工业过程的二线过程变量变送器，包括被配置为感测工业过程流体的过程变量的过程变量传感器。 输出电路被配置为在与所感测的过程变量相关的二线过程控制回路上提供输出。 回路电流测量电路测量流过两线制过程控制回路的回路电流，并且端子电压测量电路测量与过程变量变送器的端子电压相关的电压。 端子电压可以是两线制过程变量发射机与两线制过程控制回路的电气连接测量的电压。 输入电路配置为从两线制过程控制回路接收诊断命令。 该微处理器被配置为响应于从两线制过程控制回路接收到诊断命令，基于所测量的回路电流和端子电压在两线制过程控制回路上执行循环诊断。
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2.发明授权Apparatus and method for detecting power of a three phase alternating current system 失效用于检测三相交流系统功率的装置和方法
公开(公告)号：US5442279A
公开(公告)日：1995-08-15
申请号：US980917
申请日：1992-11-24
IPC分类号： G01R21/00 , G01R21/06 , G01R21/133 , G01R31/42 , G01R11/16
CPC分类号： G01R21/133 , G01R21/06 , G01R31/42
摘要： An electric power detector for a three-phase AC voltage supply which measures the current of one phase and the voltage between the one phase and another phase and computes the phase difference between the voltage and the current, decides the phase rotation direction by comparing the phase difference with a specified angle, and obtains a power factor angle by adding or subtracting 30.degree. to or from the phase difference corresponding to the result of the decision to produce a power factor angle for computing three-phase power.
摘要翻译： 用于测量一相电流和一相和另一相之间的电压并计算电压和电流之间的相位差的三相交流电压源的电力检测器通过比较相位来确定相位旋转方向 与指定角度的差异，并且通过将与决定结果相对应的相位差加或减30°来获得功率因数角，以产生用于计算三相功率的功率因数角。
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公开(公告)号：US4660035A
公开(公告)日：1987-04-21
申请号：US737092
申请日：1985-05-23
申请人： Gary R. Hoffman
发明人： Gary R. Hoffman
IPC分类号： G01R11/16 , G01R21/133 , G06M1/274 , G08C19/16
CPC分类号： G01R11/16 , G01R21/133 , G06M1/274
摘要： A wheel is mounted on a rotating shaft and cooperates with at least one pair of inductors fixedly mounted in juxtaposition to the wheel. The wheel has at least one opening formed therein for generating a signal whenever the opening in the wheel is substantially aligned circumferentially with the pair of inductors. An electronic control circuit, responsive to the signal, actuates a remote meter for providing a remote indication of the shaft position. In a preferred embodiment, this improved sensing means is applied to the remote reading of a conventional household electric meter. Two pair of inductors are provided for cooperation with five equiangularly-spaced closed slots formed in the wheel, thereby providing ten signals (or counts) for each complete revolution of the wheel. The wheel is mounted on the shaft of the unit decade dial in the meter. The remote meter comprises a digital counter, responsive to the pulse generated by the electronic control circuit, for providing a remote digital read-out of the accumulated kilowatt hours on the meter.
摘要翻译： 车轮安装在旋转轴上，并与至少一对固定安装在车轮上的电感器配合。 车轮上至少有一个开口形成在其中，用于当车轮中的开口基本上与该对电感器对齐时产生信号。 响应于该信号的电子控制电路致动远程仪表以提供轴位置的远程指示。 在优选实施例中，这种改进的感测装置被应用于传统家用电表的远程读取。 提供两对电感器用于与车轮中形成的五个等角度间隔的闭合槽配合，从而为车轮的每次完整转动提供十个信号（或计数）。 车轮安装在仪表的单位十年表盘的轴上。 远程仪表包括数字计数器，响应于由电子控制电路产生的脉冲，用于在仪表上提供累积千瓦小时的远程数字读出。
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公开(公告)号：US4511798A
公开(公告)日：1985-04-16
申请号：US469070
申请日：1983-02-23
摘要： A multiple shaft meter including register characterized by an electrical signal generating system including illuminating source and a plurality of encoding photocells. A light baffle plate is disposed between the illumination source in the photocells and is provided with apertures aligned with respective photocells, and the apertures being tapered to minimize stray light effects.
摘要翻译： 一种多轴计，包括寄存器，其特征在于包括照明源和多个编码光电池的电信号发生系统。 光挡板设置在光电管中的照明源之间，并且设置有与各个光电池对准的孔，并且所述孔是锥形的，以最小化杂散光效应。
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公开(公告)号：US4500870A
公开(公告)日：1985-02-19
申请号：US306901
申请日：1981-09-29
摘要： A utility meter has a plurality of rotating shafts which have angular positions corresponding to the digits of a consumption reading. A cam is attached to that shaft which is associated with the least significant digit. The cam has a light reflecting track. Light from a light source is reflected off the track to a photodetector along an optical path which varies in length in accordance with angular cam position. Electronic circuitry is connected to the light source and photodetector and produces an output signal in digital form which has a frequency related to intensity of light incident upon the photodetector.
摘要翻译： 效用度量计具有多个旋转轴，其具有与消耗读数的数字对应的角位置。 凸轮连接到与最低有效位相关联的该轴上。 凸轮具有光反射轨道。 来自光源的光从轨道反射到沿着沿着角度凸轮位置而在长度上变化的光路的光电检测器。 电子电路连接到光源和光电检测器，并产生数字形式的输出信号，其具有与入射到光电检测器上的光的强度相关的频率。
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公开(公告)号：US4352979A
公开(公告)日：1982-10-05
申请号：US219096
申请日：1980-12-22
申请人： Gene C. Knecht
发明人： Gene C. Knecht
CPC分类号： G06M1/064 , G01R11/02 , Y10T74/19172
摘要： Unidirectional rotation of a register is produced by a ratchet assembly having a pivoting pawl member having two diverging wire segments, each of which discretely engages either of two sets of ratchet teeth. A transfer means couples input rotations of the rachet assembly in a false registering direction so as to produce rotations of the assembly output in a true registering direction.
摘要翻译： 寄存器的单向旋转由具有枢转爪构件的棘轮组件产生，该棘爪构件具有两个发散的线段，每个分段线分离地接合两组棘齿中的任一个。 传送装置以错误的记录方向联接抽屉组件的输入旋转，以便在真实的记录方向上产生组件输出的旋转。
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公开(公告)号：US4092590A
公开(公告)日：1978-05-30
申请号：US582423
申请日：1975-05-30
申请人： Kazumi Watanabe
发明人： Kazumi Watanabe
IPC分类号： G01R21/00 , G01R21/133 , G01R21/06 , G01R11/16
CPC分类号： G01R21/00 , G01R21/133
摘要： An electronic three-phase four-wire system watt-hour meter equipped with a single operational circuit which multiplies the voltage and the current of each phase of a three-phase alternating current power source of which electric energy is to be measured. Electronic switches are provided which work on voltage and electronic switches are provided which work on current in each phase. Said electronic switches are cyclically opened and closed by three-phase pulse signals provided for control. The operational circuit produces, in the form of a current, an output corresponding to the sum of the electric power of each phase of said three-phase alternating current source.
摘要翻译： 一种电子三相四线制电度表，其具有单个操作电路，其乘以要测量电能的三相交流电源的每相的电压和电流。 提供电子开关，工作在电压和电子开关，每个阶段都有电流开关。 所述电子开关由提供用于控制的三相脉冲信号循环地打开和闭合。 操作电路以电流的形式产生对应于所述三相交流电源的每相的电功率之和的输出。
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8.发明授权
公开(公告)号：US3436656A
公开(公告)日：1969-04-01
申请号：US3436656D
申请日：1967-05-05
申请人： GEN ELECTRIC
发明人： BRAND WALTER A JR
CPC分类号： G01P3/66
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公开(公告)号：US1801106A
公开(公告)日：1931-04-14
申请号：US41391329
申请日：1929-12-13
申请人： GEN ELECTRIC
发明人： PRICE DAVID R
IPC分类号： G01R11/16
CPC分类号： G01R11/16
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10.发明授权Method and a system for cable or subscriber loop investigation performing loop topology identification 有权用于电缆或用户环路调查的方法和系统执行环路拓扑识别公开(公告)号：US08065100B2
公开(公告)日：2011-11-22
申请号：US12162665
申请日：2006-01-31
摘要： A system and method for using loop topology identification to investigate a transmission line having a plurality of cable segments. At a measurement plane for each segment, a probing signal is transmitted into the cable. A reflected signal is detected, and an equivalent total input impedance is calculated. The system iteratively calculates the distance between the measurement planes as well as the length, characteristic impedance, and the propagation constant of each segment. A model is used to calculate the respective equivalent input impedance of each segment using the calculated characteristic impedance, propagation constant, and length of the preceding segment. The equivalent total input impedance is then calculated from the iteratively calculated segment values.
摘要翻译： 一种用于使用环路拓扑识别来研究具有多个电缆段的传输线的系统和方法。 在每个段的测量平面，探测信号被传输到电缆中。 检测反射信号，并计算等效的总输入阻抗。 系统迭代地计算测量平面之间的距离以及每段的长度，特征阻抗和传播常数。 使用模型使用计算的特征阻抗，传播常数和前一段的长度来计算每个段的相应等效输入阻抗。 然后从迭代计算的段值计算等效的总输入阻抗。
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