公开(公告)号：US20240019467A1

公开(公告)日：2024-01-18

申请号：US18365152

申请日：2023-08-03

申请人： Seyed Soroush Karimi Madahi ,  Hossein Askarian Abyaneh ,  Farzad Razavi ,  Mohammad Parpaei ,  Davood Yoosefian

发明人： Seyed Soroush Karimi Madahi ,  Hossein Askarian Abyaneh ,  Farzad Razavi ,  Mohammad Parpaei ,  Davood Yoosefian

IPC分类号： G01R19/25 ,  G01R23/12 ,  G01R31/08

CPC分类号： G01R19/2513 ,  G01R23/12 ,  G01R31/088

摘要： A method for frequency estimation in a power system. The method includes detecting a condition of the power system, applying a first estimation process to a voltage signal of the power system responsive to a normal condition being detected, and applying a second estimation process to a current signal of the power system responsive to a fault condition being detected. The condition of the power system is detected utilizing a protective device. The condition of the power system includes one of a normal condition and a fault condition.

公开(公告)号：US09231613B2

公开(公告)日：2016-01-05

申请号：US14712087

申请日：2015-05-14

申请人： Seiko Epson Corporation

发明人： Masayoshi Todorokihara

IPC分类号： H03M3/00

CPC分类号： H03M3/346 ,  G01R23/12 ,  H03M3/30 ,  H03M3/324 ,  H03M3/396 ,  H03M3/466 ,  H03M3/472

摘要： An idle tone dispersion device includes n FDSM (1) to FDSM (n), a phase adjustment unit which relatively adjusts a phase between a measured signal and a reference signal such that a phase of an idle tone is completely different, and generates and supplies n sets of output measured signals and output reference signals to each of the n FDSM (1) to FDSM (n), and an adder which adds output data of the n FDSM (1) to FDSM (n) and outputs a frequency delta-sigma modulation signal.

摘要翻译： 空闲色散分散装置包括nFDSM（1）至FDSM（n），相位调整单元，其相对调节测量信号和参考信号之间的相位，使得空闲音调的相位完全不同，并产生和提供 n个输出测量信号和输出参考信号到n FDSM（1）至FDSM（n）中的每一个，以及将n个FDSM（1）的输出数据加到FDSM（n）的加法器，并输出频率Δ- Σ调制信号。

公开(公告)号：US20150204920A1

公开(公告)日：2015-07-23

申请号：US14411063

申请日：2012-08-17

申请人： Kempei Seki

发明人： Kempei Seki

IPC分类号： G01R19/25 ,  G01R19/00 ,  G01R23/06 ,  G01R19/252

CPC分类号： G01R19/2513 ,  G01R19/0007 ,  G01R19/2509 ,  G01R19/252 ,  G01R23/06 ,  G01R23/12

摘要： A frequency-coefficient calculating unit calculates, as a frequency coefficient (fc), a value ((v21+v23)/(2v22)) obtained by normalizing, with a differential voltage instantaneous value (v22) at intermediate time, an average ((v21+v23)/2) of a sum (v21+v23) of differential voltage instantaneous values at time other than the intermediate time among differential voltage instantaneous value data (v21, v22, and v23) at three points representing an inter-distal end distance between voltage instantaneous value data at adjacent two points in voltage instantaneous value data at continuous at least four points extracted, out of voltage instantaneous value data obtained by sampling a measurement target alternating-current voltage at a predetermined data collection sampling frequency, at a gauge sampling frequency lower than the data collection sampling frequency and equal to or higher than a frequency of the alternating-current voltage.

摘要翻译： 频率系数计算单元通过使用中间时间的差分电压瞬时值（v22）通过归一化而获得的值（（v21 + v23）/（2v22））作为频率系数（fc），计算平均（（ v21 + v23）/ 2）在代表远端的三个点处的差分电压瞬时值数据（v21，v22和v23）之间的中间时间之外的时刻的差分电压瞬时值的和（v21 + v23） 在连续提取的至少四点的电压瞬时值数据中的相邻两点处的电压瞬时值数据之间的距离，通过以预定数据采集采样频率采样测量目标交流电压获得的电压瞬时值数据， 采样频率低于数据采集频率，等于或高于交流电压的频率。

公开(公告)号：US08914909B2

公开(公告)日：2014-12-16

申请号：US13583952

申请日：2011-03-17

申请人： Steffen Porthun

发明人： Steffen Porthun

IPC分类号： G01Q30/00 ,  H03L7/08 ,  G01R23/02 ,  G01Q30/04 ,  G01Q10/06 ,  B82Y35/00 ,  G01R23/06 ,  G01R23/12 ,  G01R23/15

CPC分类号： H03L7/0991 ,  B82Y35/00 ,  G01Q10/06 ,  G01Q10/065 ,  G01Q30/00 ,  G01Q30/04 ,  G01R23/02 ,  G01R23/06 ,  G01R23/12 ,  G01R23/155 ,  H03L7/0805 ,  H03L7/085 ,  H03L7/099 ,  H03L2207/50

摘要： A frequency measuring and control apparatus includes a plurality of synchronized oscillators integrated in parallel into one programmable logic device.

摘要翻译： 频率测量和控制装置包括并行集成为一个可编程逻辑器件的多个同步振荡器。

公开(公告)号：US08907655B2

公开(公告)日：2014-12-09

申请号：US13097796

申请日：2011-04-29

申请人： Gabriel Antonesei

发明人： Gabriel Antonesei

IPC分类号： G01R23/00 ,  G01R25/00 ,  G01R23/12 ,  G01R23/02 ,  G01R23/14

CPC分类号： G01R23/02 ,  G01R23/12 ,  G01R23/14 ,  G01R25/00 ,  H03L7/093

摘要： A system and method to detect the fundamental frequency of an electric input signal using a feedback control loop including a phase error detector, a loop controller, and a digitally controlled oscillator. The frequency detector may detect the fundamental frequency of an electric input signal and produce an output signal representing the fundamental frequency of the electric input signal. The frequency detector may further include a filter that may be coupled to the frequency detector output signal in order to remove spurious tones or noise from the output signal.

摘要翻译： 使用包括相位误差检测器，回路控制器和数字控制振荡器的反馈控制回路来检测电输入信号的基频的系统和方法。 频率检测器可以检测电输入信号的基频，并产生表示电输入信号的基频的输出信号。 频率检测器还可以包括可以耦合到频率检测器输出信号的滤波器，以便从输出信号中去除杂散音或噪声。

公开(公告)号：US20110115467A1

公开(公告)日：2011-05-19

申请号：US13002865

申请日：2008-09-22

申请人： Hiroaki Sato

发明人： Hiroaki Sato

IPC分类号： G01R23/00

CPC分类号： G01B7/066 ,  G01R23/12 ,  H03B5/362 ,  H03L7/093 ,  H03L7/0994 ,  H03L7/235 ,  H03L7/24

摘要： A phase comparator (4) for detecting a phase difference between a first signal and a second signal, a first oscillating circuit (1) for supplying the phase comparator with a reference signal as the first signal, and a DDS (8) as a second oscillating circuit for outputting a signal according to an output of the above-mentioned phase comparator are provided.As for a filter-thickness measuring device using the PLL circuit as a frequency measurement circuit, a crystal oscillator (11) which is made of quartz etc. and connected to the first oscillating circuit is accommodated in a vacuum chamber (C). It is arranged that the frequency measurement circuit which constitutes the PLL circuit measures a film thickness of the film forming material based on a change of a natural frequency of a piezoelectric crystal, the change being caused by the film forming material deposited on the piezoelectric element in the vacuum chamber.

摘要翻译： 用于检测第一信号和第二信号之间的相位差的相位比较器（4），用于向相位比较器提供参考信号作为第一信号的第一振荡电路（1）和作为第二信号的DDS（8） 提供了用于根据上述相位比较器的输出输出信号的振荡电路。 对于使用PLL电路作为频率测量电路的滤波器厚度测量装置，将由石英等制成并连接到第一振荡电路的晶体振荡器（11）容纳在真空室（C）中。 布置了构成PLL电路的频率测量电路基于压电晶体的固有频率的变化来测量成膜材料的膜厚度，该变化是由沉积在压电元件上的成膜材料引起的 真空室。

公开(公告)号：US20090224837A1

公开(公告)日：2009-09-10

申请号：US12466595

申请日：2009-05-15

申请人： James Joy ,  Jason Kroh ,  Michael Ellis ,  Mark Allen ,  Wilton Pyle

发明人： James Joy ,  Jason Kroh ,  Michael Ellis ,  Mark Allen ,  Wilton Pyle

IPC分类号： H03L7/099

CPC分类号： G01R23/12 ,  A61B5/0002 ,  A61B5/0031 ,  A61B5/05 ,  A61B5/076 ,  A61B2560/0219 ,  A61B2560/0223 ,  G01D21/00 ,  G01F15/066 ,  G01R23/145

摘要： The present invention determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with a low duty cycle, gated burst of RF energy having a predetermined frequency or set of frequencies and a predetermined amplitude. The energizing signal is coupled to the sensor via magnetic coupling and induces a current in the sensor which oscillates at the resonant frequency of the sensor. The system receives the ring down response of the sensor via magnetic coupling and determines the resonant frequency of the sensor, which is used to calculate the measured physical parameter. The system uses a pair of phase locked loops to adjust the phase and the frequency of the energizing signal.

摘要翻译： 本发明通过调节激励信号的相位和频率直到激励信号的频率与传感器的谐振频率相匹配来确定传感器的谐振频率。 该系统以低占空比激励传感器，具有预定频率或一组频率和预定幅度的RF能量门控突发。 激励信号通过磁耦合耦合到传感器，并且感应传感器中的电流，其以传感器的谐振频率振荡。 系统通过磁耦合接收传感器的响铃响应，并确定传感器的谐振频率，用于计算测量的物理参数。 该系统使用一对锁相环来调节激励信号的相位和频率。

公开(公告)号：US20070210786A1

公开(公告)日：2007-09-13

申请号：US11748053

申请日：2007-05-14

申请人： Mark Allen ,  Michael Ellis ,  Jason Kroh ,  Donald Miller

发明人： Mark Allen ,  Michael Ellis ,  Jason Kroh ,  Donald Miller

IPC分类号： G01R23/12

CPC分类号： G01R23/145 ,  A61B5/0002 ,  A61B5/0031 ,  A61B5/05 ,  A61B5/076 ,  A61B2560/0219 ,  A61B2560/0223 ,  G01F15/066 ,  G01R23/12 ,  H04L2027/0028 ,  H04L2027/0055 ,  H04L2027/0067

摘要： The present invention determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with a low duty cycle, gated burst of RF energy having a predetermined frequency or set of frequencies and a predetermined amplitude. The energizing signal is coupled to the sensor via magnetic coupling and induces a current in the sensor which oscillates at the resonant frequency of the sensor. The system receives the ring down response of the sensor via magnetic coupling and determines the resonant frequency of the sensor, which is used to calculate the measured physical parameter. The system uses a pair of phase locked loops to adjust the phase and the frequency of the energizing signal.

摘要翻译： 本发明通过调节激励信号的相位和频率直到激励信号的频率与传感器的谐振频率相匹配来确定传感器的谐振频率。 该系统以低占空比激励传感器，具有预定频率或一组频率和预定幅度的RF能量门控突发。 激励信号通过磁耦合耦合到传感器，并且感应传感器中的电流，其以传感器的谐振频率振荡。 系统通过磁耦合接收传感器的响铃响应，并确定传感器的谐振频率，用于计算测量的物理参数。 该系统使用一对锁相环来调节激励信号的相位和频率。

公开(公告)号：US20060196277A1

公开(公告)日：2006-09-07

申请号：US11276571

申请日：2006-03-06

申请人： Mark Allen ,  Michael Ellis ,  Jason Kroh ,  Donald Miller

发明人： Mark Allen ,  Michael Ellis ,  Jason Kroh ,  Donald Miller

IPC分类号： G01F1/58

CPC分类号： G01R23/12 ,  A61B5/0002 ,  A61B5/0031 ,  A61B5/05 ,  A61B5/076 ,  A61B2560/0219 ,  A61B2560/0223 ,  G01D21/00 ,  G01F15/066 ,  G01R23/145

摘要： The present invention determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with a low duty cycle, gated burst of RF energy having a predetermined frequency or set of frequencies and a predetermined amplitude. The energizing signal is coupled to the sensor via magnetic coupling and induces a current in the sensor which oscillates at the resonant frequency of the sensor. The system receives the ring down response of the sensor via magnetic coupling and determines the resonant frequency of the sensor, which is used to calculate the measured physical parameter. The system uses a pair of phase locked loops to adjust the phase and the frequency of the energizing signal.

公开(公告)号：US20180059154A1

公开(公告)日：2018-03-01

申请号：US15670602

申请日：2017-08-07

申请人： Schneider Electric Industries SAS

发明人： Julien MECREANT ,  Christophe GHAFARI ,  Bertrand RAISON ,  Raphael CAIRE

IPC分类号： G01R23/00 ,  G01R23/12 ,  G01R19/25

CPC分类号： G01R23/005 ,  G01R19/2506 ,  G01R23/02 ,  G01R23/12 ,  G01R23/15 ,  H02H3/46

摘要： A method determines the frequency of an alternating input signal includes storing the input signal, sampling the input signal at a first sampling frequency, a first calculation and a first angular comparison of two phasors representing the input signal at two respective instants, as a function of the input signal sampled at the first sampling frequency, estimating the frequency of the input signal, and searching for a modification of frequency of the input signal. When a modification is detected the method includes, determining a second sampling frequency, sampling the stored input signal with the second sampling frequency, a second calculation and a second angular comparison of two phasors representing the input signal, at two respective instants, as a function of the input signal sampled at the second sampling frequency and of the stored input signal sampled at the second sampling frequency, and estimating the frequency of the input signal.