公开(公告)号：US06351718B1

公开(公告)日：2002-02-26

申请号：US09230064

申请日：1999-01-19

Applicant: Mitsuhiro Shimazu ,  Shuuki Akushichi

Inventor： Mitsuhiro Shimazu ,  Shuuki Akushichi

IPC: G01R3504

CPC classification number: H01H47/325 ,  F15B13/044 ,  F15B21/045 ,  F15B21/087

Abstract: A current control apparatus capable of accurately and stably controlling a current which is supplied to an object of control such as a coil of a solenoid even when a control target value varies greatly at a predetermined time interval. In this apparatus, a value (y3) of a current passing through the object of control (33) is detected, and the detected current value (y3) is output at a predetermined time intervals. On the basis of a preceding corrected current value (y4old) and a presently outputted current value (y3), a presently corrected current value (y4) is computed so that this value comes to be intermediate between the preceding corrected current value (y4old) and presently outputted current value (y3), and the resultant current value is output. On the basis of a precedingly corrected duty (d3old) and a presently outputted duty (d1), a presently corrected duty (d3) is computed so that the presently corrected duty (d3) has a value intermediate between those of the precedingly corrected duty (d3old) and the presently outputted duty (d1). On the basis of a target current value (x1) to be input, the outputted corrected current value (y4) and the outputted corrected duty (3d), the duty (d1) is computed, and the result is outputted.

Abstract translation: 一种电流控制装置，即使在控制目标值以预定的时间间隔变化很大的情况下，也能够精确而稳定地控制供给到螺线管的线圈的控制对象的电流。 在该装置中，检测通过控制对象（33）的电流的值（y3），并且以预定的时间间隔输出检测到的电流值（y3）。 基于前一校正电流值（y4old）和当前输出的电流值（y3），计算当前校正的电流值（y4），使得该值变为在先前校正电流值（y4old）和 当前输出电流值（y3），并输出合成电流值。 基于先前校正的占空比（d3old）和当前输出的占空比（d1），计算当前校正的占空比（d3），使得当前校正的占空比（d3）具有在先前校正的占空比 d3old）和当前输出的占空比（d1）。 根据要输入的目标电流值（x1），计算输出的校正电流值（y4）和输出的校正占空比（3d），占空比（d1），并输出结果。

公开(公告)号：US06633825B2

公开(公告)日：2003-10-14

申请号：US09897586

申请日：2001-06-29

Applicant: Gordon R. Burns ,  John P. Junker

Inventor： Gordon R. Burns ,  John P. Junker

IPC: G01R3504

CPC classification number: G01R35/04

Abstract: An arrangement for adaptive time keeping in a utility meter includes a timing circuit and a controller. The timing circuit is operable to generate timing signals. The controller is operably coupled to the timing circuit to receive timing signals therefrom. Further, the controller is operable to: generate a first real-time value based at least in part on an externally generated first reference time value; derive a subsequent second real-time value, based at least in part on the first real-time value, the timing signals, and a timing circuit calibration value; obtain an externally generated second reference time value; determine a rate adjustment based at least in part on a difference between the second real-time value and the second reference time value; and generate a subsequent real-time value based at least in part on the timing signals, the timing circuit calibration value, and the rate adjustment.

Abstract translation: 用于公用事业计量表中的自适应时间保持的装置包括定时电路和控制器。 定时电路可操作以产生定时信号。 控制器可操作地耦合到定时电路以从其接收定时信号。 此外，控制器可操作以：至少部分地基于外部产生的第一参考时间值来生成第一实时值; 至少部分地基于第一实时值，定时信号和定时电路校准值导出随后的第二实时值; 获得外部产生的第二参考时间值; 至少部分地基于第二实时值和第二参考时间值之间的差来确定速率调整; 并且至少部分地基于定时信号，定时电路校准值和速率调整来生成后续实时值。

公开(公告)号：US06236197B1

公开(公告)日：2001-05-22

申请号：US09311346

申请日：1999-05-13

Applicant: Scott T. Holdsclaw ,  Edward J. Beroset

Inventor： Scott T. Holdsclaw ,  Edward J. Beroset

IPC: G01R3504

CPC classification number: G01R22/066

Abstract: An apparatus for determining loss of reference voltage (indicating possible tampering) in a 2-element electronic meter that includes a processor for determining electrical power from voltage and current signals, and a display for indicating an operating status of the meter. To determine if the reference voltage of the meter in a 3-wire delta or network installation has been lost, a measurement of the phase angle difference between the two phases is made. If the phase difference is equal to a predetermined value, the meter indicates on the display that loss of reference voltage and possible tampering has taken place. The apparatus may further be adapted to determine a length of time that this condition has occurred such that the appropriate enforcement and billing agencies may be informed.

Abstract translation: 一种用于确定包括用于从电压和电流信号确定电功率的处理器的二元电子计量器中的参考电压损失（指示可能的篡改）的装置，以及用于指示仪表的运行状态的显示器。 为了确定三线制三角形或网络安装中的仪表的参考电压是否丢失，进行两相之间的相位差的测量。 如果相位差等于预定值，则仪表在显示器上指示参考电压的损失和可能的篡改发生。 该装置还可以适于确定这种情况已经发生的时间长度，使得可以通知适当的执行和计费机构。

公开(公告)号：US06501257B1

公开(公告)日：2002-12-31

申请号：US09645847

申请日：2000-08-24

Applicant: David D. Elmore

Inventor： David D. Elmore

IPC: G01R3504

CPC classification number: G01R35/04 ,  G01R21/133 ,  G01R22/00

Abstract: High speed multifunction testing and calibration of electronic electricity meters comprises whole cycle synchronized testing. More specifically, start and end test commands defining a test interval synchronized to whole cycles of the pulsating a.c. potentials and currents are signaled by a meter under test (MUT) to a plurality of standard meters, during which multiple electrical quantities are accumulated by both the MUT and the standard meters. The MUT accumulated quantities and the accumulated quantities of the standard meters are communicated to the external test device for comparison. These comparisons may be used by the external test device to calculate coefficients for correcting or calibrating the MUT. The coefficients are transmitted to the MUT where they are incorporated into the algorithms for calculation of the desired electrical quantities.

Abstract translation: 电子电表的高速多功能测试和校准包括全周期同步测试。 更具体地说，开始和结束测试命令定义与脉动式直流的整个周期同步的测试间隔。 电位和电流由被测试仪表（MUT）发出信号通过多个标准仪表，在此期间MUT和标准仪表都积累了多个电量。 将MUT累积量和标准仪表的累计量传送到外部测试装置进行比较。 这些比较可以由外部测试装置用于计算用于校正或校准MUT的系数。 系数被传输到MUT，在那里将它们并入用于计算所需电量的算法中。

公开(公告)号：US06262569B1

公开(公告)日：2001-07-17

申请号：US08978709

申请日：1997-11-26

Applicant: John M. Carr ,  Donald W. Malackowski

Inventor： John M. Carr ,  Donald W. Malackowski

IPC: G01R3504

CPC classification number: G01R35/04

Abstract: A portable energy meter test system for testing energy meters and other related instrumentation on-site is disclosed. The test system utilizes waveform generating circuitry to generate and transmit electrical waveforms to an energy meter to be tested, and sensing circuitry for sensing electrical characteristics corresponding to the transmitted electrical waveform. The test system includes a processor for evaluation and control of the testing procedure. A graphic touch screen is coupled to the processor for displaying information about the energy meter and for displaying test options to the user and allowing the user to control the testing process by touching the screen.

Abstract translation: 公开了一种便携式能量计测试系统，用于现场测试电能表和其他相关仪器。 测试系统利用波形发生电路来产生电波形并将其传输到要测试的能量计，以及感测电路，用于感测对应于所发射的电波形的电特性。 测试系统包括用于评估和控制测试程序的处理器。 图形触摸屏耦合到处理器，用于显示有关能量计的信息，并向用户显示测试选项，并允许用户通过触摸屏幕来控制测试过程。