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1. 发明授权

US06975951B1 Meter apparatus and method for phase angle compensation employing linear interpolation of digital signals 有权
标题翻译：使用数字信号的线性插值的相位角补偿的仪表装置和方法
公开(公告)号：US06975951B1
公开(公告)日：2005-12-13
申请号：US10865476
申请日：2004-06-10
申请人： Praveen K. Sutrave , Roger W. Cox
发明人： Praveen K. Sutrave , Roger W. Cox
IPC分类号： G01R35/00 , G06F19/00
CPC分类号： G01R35/00
摘要： A method compensates for phase differences between sampled values of first and second AC waveforms. The method employs a phase angle compensation factor and sequentially samples a plurality of values of each of the waveforms. For a positive compensation factor, second sampled values are adjusted to correspond with first sampled values by employing, for a corresponding second sampled value, a preceding second sampled value plus the product of: (i) the compensation factor and (ii) the difference between the corresponding second sampled value and the preceding second sampled value. Alternatively, for a negative compensation factor, the second sampled values are adjusted by employing, for the corresponding second sampled value, the preceding second sampled value minus the product of: (i) the sum of one plus the compensation factor and (ii) the difference between the preceding second sampled value and the second sampled value preceding the preceding second sampled value.
摘要翻译：一种方法补偿第一和第二AC波形的采样值之间的相位差。该方法采用相位角补偿因子并顺序采样每个波形的多个值。对于正的补偿因子，通过对于相应的第二采样值采用先前的第二采样值加上以下乘积，将第二采样值调整为对应于第一采样值：（i）补偿因子和（ii）对应的第二采样值和先前的第二采样值。或者，对于负的补偿因子，通过对于相应的第二采样值采用先前的第二采样值减去以下乘积来调整第二采样值：（i）加上补偿因子的和和（ii）上述第二采样值与先前第二采样值之前的第二采样值之间的差。

2. 发明授权

US4922195A Extraneous frequency detector 失效
标题翻译：外部频率检测器
公开(公告)号：US4922195A
公开(公告)日：1990-05-01
申请号：US286391
申请日：1988-12-19
申请人： Roger W. Cox
发明人： Roger W. Cox
IPC分类号： G01R23/20 , G01R23/165 , G01R29/00 , G01R31/00
CPC分类号： G01R23/165
摘要： An extraneous frequency detector especially suited for analyzing the three-phase output of a variable speed constant frequency (VSCF) generator generates in a sample-and-hold circuit amplitude samples of a phase selected by a multiplexer for application to a discrete time analog filter in the form of a switched capacitor high pass filter. A control circuit generates dual-phase non-overlapping clocking signals which control the sampling rate of the sample-and-hole circuit and the switching rate of the switched capacitor filter. Two modes of operation are provided for the single filter circuit by generating the clocking signals for the first mode of operation at a first frequency which is at least twice the frequency of the highest order harmonic of interest such that all frequencies above the fundamental are detected. In the second mode of operation, the clocking signals are generated at the fundamental frequency. This produces aliasing of the fundamental frequency and all harmonics resulting in a comb filter which detects all frequencies above a few hertz except for the fundamental and its harmonics. The selected frequency is preferrably a power of two multiple of the fundamental frequency such that a divider circuit generates the clocking signals at fundamental frequency from the pulses at the selected high frequency. A peak detector provides an output signal representative of the highest amplitude of the frequencies passed by the filter.

3. 发明授权

US06906655B1 Plural channel analog-to-digital converter, method and meter employing an input channel with a predetermined direct current bias 有权
标题翻译：采用具有预定直流偏置的输入通道的多通道模数转换器，方法和仪表
公开(公告)号：US06906655B1
公开(公告)日：2005-06-14
申请号：US10740130
申请日：2003-12-18
申请人： Roger W. Cox
发明人： Roger W. Cox
IPC分类号： G06F3/05 , H03M1/06 , H03M1/12 , H03M3/00
CPC分类号： H03M1/0624 , G06F3/05 , H03M1/1225 , H03M3/324 , H03M3/474
摘要： A meter for power lines includes first input channels having AC signals with DC values of about zero. A second input channel has an analog output with a predetermined non-zero DC bias value. Plural biasing and scaling circuits input the AC signals and output corresponding analog outputs. Plural analog-to-digital converters input the corresponding analog outputs and output corresponding digital values. A serial output circuit serially communicates the corresponding digital values for a first set of A/D conversions before serially communicating digital values for a subsequent second set of conversions without providing any synchronization of the corresponding digital values for both the first and second sets of conversions. A serial input circuit serially receives the serially communicated digital values and saves the same in a memory. A processor averages the digital values for the channels and determines whether only the average associated with the second channel has the DC bias value.
摘要翻译：用于电力线的仪表包括具有DC值大约为零的AC信号的第一输入通道。第二输入通道具有具有预定非零DC偏置值的模拟输出。多个偏置和缩放电路输入交流信号并输出相应的模拟输出。多个模数转换器输入相应的模拟输出并输出相应的数字值。串行输出电路串行地传送用于第一组A / D转换的相应数字值，然后连续地传送用于随后的第二组转换的数字值，而不提供用于第一和第二组转换的相应数字值的任何同步。串行输入电路串行接收串行通信的数字值并将其保存在存储器中。处理器对通道的数字值进行平均，并确定仅与第二通道相关联的平均值是否具有DC偏置值。

4. 发明授权

US5706204A Apparatus for triggering alarms and waveform capture in an electric power system 失效
标题翻译：用于在电力系统中触发报警和波形捕获的装置
公开(公告)号：US5706204A
公开(公告)日：1998-01-06
申请号：US608387
申请日：1996-02-28
申请人： Roger W. Cox , Robert T. Elms , Sally A. Putt
发明人： Roger W. Cox , Robert T. Elms , Sally A. Putt
IPC分类号： G01R13/20 , G01R13/06 , G01R19/00 , G01R19/25 , G01R21/133 , G01R29/00 , G01R29/16 , G01R31/02 , G01R13/02
CPC分类号： G01R31/024 , G01R13/06 , G01R19/2513 , G01R21/133
摘要： A monitor/analyzer for an ac electrical system can be programmed through a display on the front panel to respond to selected events by generating triggers signals when selected monitored electrical parameters including neutral current exceed programmed thresholds. The trigger signals initiate simultaneous waveform capture of multiple waveforms in the ac system. Multiple trigger signals result in sequential waveform capture so that if a plurality of triggers are programmed for the same event, extended waveform data is captured for the event. Alarm screens are generated in response to the events, as well as for hardware failure, an excessive neutral-to-ground voltage or reverse sequence.
摘要翻译：交流电气系统的监视器/分析仪可以通过前面板上的显示器编程，以便在选定的监控电气参数（包括中性点电流超过编程阈值）时，通过产生触发信号来响应所选事件。触发信号启动交流系统中多个波形的同时波形捕获。多个触发信号导致顺序的波形捕获，因此如果针对同一事件编程了多个触发信号，则为事件捕获扩展波形数据。响应于事件产生报警屏幕，以及硬件故障，过载的中性线对地电压或反向序列。

5. 发明授权

US08510449B1 Caching of data requests in session-based environment 有权
标题翻译：在基于会话的环境中缓存数据请求
公开(公告)号：US08510449B1
公开(公告)日：2013-08-13
申请号：US11117950
申请日：2005-04-29
申请人： Gyanendra D. Pradhan , Roger W. Cox , Garrett R. Mueller
发明人： Gyanendra D. Pradhan , Roger W. Cox , Garrett R. Mueller
IPC分类号： G06F15/16
CPC分类号： H04L67/2842 , G06F17/30457
摘要： Caching of data requests in session-based environment. An embodiment of a method includes a client preparing a data request for a storage server in a session-based environment. The prepared data request is transmitted from the client to the storage server. The data request is stored in a cache memory for the client via a protocol for the session-based environment.
摘要翻译：在基于会话的环境中缓存数据请求。方法的实施例包括在基于会话的环境中为存储服务器准备数据请求的客户端。准备的数据请求从客户端发送到存储服务器。数据请求通过用于基于会话的环境的协议存储在客户端的高速缓冲存储器中。

6. 发明授权

US07054769B2 Statistical method and apparatus for monitoring parameters in an electric power distribution system 有权
标题翻译：用于监测配电系统参数的统计方法和装置
公开(公告)号：US07054769B2
公开(公告)日：2006-05-30
申请号：US10859829
申请日：2004-06-03
申请人： Roger W. Cox
发明人： Roger W. Cox
IPC分类号： G06F19/00
CPC分类号： G01R19/2513 , G01R21/133
摘要： Dynamic thresholds statistically derived are used to define normal conditions at a specific site in an electric power distribution system. High and low and/or caution and alarm thresholds for various parameters are generated as multiples of the standard deviation of the long-term average of measured values calculated from samples gathered over repetitive intervals, such as ten minutes. Weekly averages are used until sufficient data has been gathered to maintain a running one year average.
摘要翻译：统计学导出的动态阈值用于定义电力分配系统中特定位置的正常状况。产生各种参数的高低和/或警告和警报阈值，作为从重复间隔（如十分钟）收集的样本计算的测量值的长期平均值的标准偏差的倍数。使用每周平均数，直到收集到足够的数据以维持一年的平均水平。

7. 发明授权

US07050913B2 Method and apparatus for monitoring power quality in an electric power distribution system 有权
标题翻译：用于监测配电系统电力质量的方法和装置
公开(公告)号：US07050913B2
公开(公告)日：2006-05-23
申请号：US10782492
申请日：2004-02-19
申请人： Roger W. Cox
发明人： Roger W. Cox
IPC分类号： G01R21/00
CPC分类号： G01R19/2513 , G01R13/0209 , G01R21/006 , G01R21/133
摘要： A composite power quality indication generated from user weighted statistical contributions of selected system parameters provides an overall indication of power quality in an electric power distribution system. The user defined weightings are maintained over time by continually updating sensitivities that normalize the component contributions to the composite power quality indication. The current composite power quality indication is displayed in relation to its long-term mean and to dynamic thresholds determined as multiples of the standard deviation of the long-term mean.
摘要翻译：从所选系统参数的用户加权统计贡献产生的复合电能质量指示提供电力分配系统中的电力质量的总体指示。用户定义的权重通过不断更新对组件功率质量指示的分量贡献进行归一化的灵敏度来保持。目前的复合电能质量指示是根据其长期平均值和动态阈值来显示的，该动态阈值被确定为长期均值的标准偏差的倍数。

8. 发明授权

US06919505B2 Electronic apparatus and enclosure employing substantially co-planar portions with mating crenellations 失效
标题翻译：电子设备和外壳采用基本上具有交配孔洞的共平面部分
公开(公告)号：US06919505B2
公开(公告)日：2005-07-19
申请号：US10727921
申请日：2003-12-04
申请人： Roger W. Cox
发明人： Roger W. Cox
IPC分类号： H05K9/00
CPC分类号： H05K9/0073
摘要： An electronic apparatus, such as a meter, includes an enclosure having a first housing portion with an opening and a second front plate portion. Meter circuitry is mounted within the enclosure. The second front plate portion mates with the first housing portion within the opening and forms an interface joint. The housing and front plate portions are at least substantially co-planar proximate the interface joint and include a plurality of mating crenellations. These mating crenellation, such as serrations, reduce electromagnetic interference radiation to or from the enclosure when the housing and front plate portions are mated together.
摘要翻译：诸如仪表的电子设备包括具有带开口的第一壳体部分和第二前板部分的外壳。仪表电路安装在外壳内。第二前板部分与开口内的第一壳体部分配合形成界面接合部。壳体和前板部分在接近接头附近至少基本上共面，并且包括多个匹配的锯齿。当壳体和前板部分配合在一起时，这些配合突出部（例如锯齿状）减小了到外壳的电磁干扰辐射。

9. 发明授权

US5890097A Apparatus for waveform disturbance monitoring for an electric power system 失效
标题翻译：用于电力系统的波形干扰监测装置
公开(公告)号：US5890097A
公开(公告)日：1999-03-30
申请号：US811377
申请日：1997-03-04
申请人： Roger W. Cox
发明人： Roger W. Cox
IPC分类号： G01R19/25 , H02H3/38 , H02H3/44 , G01R13/02
CPC分类号： G01R19/2513 , H02H3/44 , H02H3/38
摘要： A monitor/analyzer for an alternating current (AC) electrical system responds to power line disturbances by generating a trigger signal when a change in voltage with respect to time electrical parameter is greater than a programmed threshold. The monitor/analyzer includes a sensor for sensing an AC waveform in the electrical system, an analog-to-digital converter for sampling the AC waveform, and a microcomputer. Firmware of the microcomputer cooperates with the A/D converter and provides a plurality of digital samples of the AC waveform for each of some of its AC cycles. The firmware generates each of plural dV/dt parameters of the AC waveform from a corresponding adjacent pair of the digital samples within one of the waveform's AC cycles. A trigger signal is generated when one of the dV/dt parameters is greater than the programmed threshold. The digital samples of the AC waveform before and after the power line disturbance are captured and output to a display in response to the trigger signal.
摘要翻译：用于交流（AC）电气系统的监视器/分析器当电压相对于时间电参数的变化大于编程阈值时通过产生触发信号来响应电力线干扰。监视器/分析器包括用于感测电气系统中的AC波形的传感器，用于对AC波形进行采样的模数转换器和微计算机。微型计算机的固件与A / D转换器协同工作，并为其一些AC循环中的每一个提供AC波形的多个数字样本。固件在波形的AC周期之一内，从对应的相邻数字采样对中产生交流波形的多个dV / dt参数。当dV / dt参数之一大于编程的阈值时，产生触发信号。捕获电力线干扰之前和之后的交流波形的数字样本，并根据触发信号将其输出到显示器。

10. 发明授权

US5754440A Apparatus for harmonic analysis of waveforms in an AC electrical system 失效
标题翻译：交流电气系统波形谐波分析装置
公开(公告)号：US5754440A
公开(公告)日：1998-05-19
申请号：US608386
申请日：1996-02-28
申请人： Roger W. Cox , Robert T. Elms
发明人： Roger W. Cox , Robert T. Elms
IPC分类号： G01R19/25 , G01R23/20 , G01R29/00 , H02J3/01
CPC分类号： G01R23/20 , G01R19/25
摘要： A monitor for an ac electrical system generates on-line a display presenting the values, either in magnitude or as a percent of the fundamental, of 50 harmonics of any of the currents and voltages in the system. The display also incudes the phase angle of each harmonic relative to a reference waveform, which is preferably phase A-B voltage or phase A to neutral voltage.
摘要翻译：用于交流电系统的监视器在线生成显示系统中任何电流和电压的50次谐波的值的大小或基波的百分比。该显示还包括相对于参考波形的每个谐波的相位角，其优选地是相位A-B电压或A相到中性电压。

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