公开(公告)号：US20200096545A1

公开(公告)日：2020-03-26

申请号：US16569361

申请日：2019-09-12

Applicant: Analog Devices Global Unlimited Company

Inventor： Long Wang ,  William Michael James Holland ,  Seyed Amir Ali Danesh

IPC: G01R19/25

Abstract: An apparatus is provided which substantially removes a perturbation signal from a pulse density modulated signal representing a combination of a signal to be measured and a perturbation applied to the signal to be measured. The removal of the perturbation is done by subtracting a correcting signal from the pulse density modulated signal. This approach introduces very little delay as it can be implemented by simple logic gates. It also provided enhanced immunity from the effects of bit errors.

公开(公告)号：US20180252748A1

公开(公告)日：2018-09-06

申请号：US15910805

申请日：2018-03-02

Applicant: Analog Devices Global

Inventor： Stephen James Martin Wood ,  Jonathan Ephraim David Hurwitz ,  Seyed Amir Ali Danesh

IPC: G01R15/14 ,  G01R35/04 ,  G01R21/133 ,  G01R11/25 ,  G01R15/04 ,  G01R19/00 ,  G01R27/02 ,  G01R23/02 ,  G01R21/14 ,  G01R1/20 ,  G01R19/02 ,  G01R21/00 ,  G01R27/16 ,  G01R27/26 ,  G01R27/28

CPC classification number: G01R15/146 ,  G01R1/203 ,  G01R11/24 ,  G01R11/25 ,  G01R15/04 ,  G01R15/14 ,  G01R19/0084 ,  G01R19/0092 ,  G01R19/02 ,  G01R21/00 ,  G01R21/133 ,  G01R21/14 ,  G01R22/066 ,  G01R22/068 ,  G01R23/02 ,  G01R27/02 ,  G01R27/14 ,  G01R27/16 ,  G01R27/26 ,  G01R27/28 ,  G01R35/04

Abstract: The present invention relates to current measurement apparatus 100. The current measurement apparatus 100 comprises a measurement arrangement 110, 114 which is configured to be disposed in relation to a load 108 which draws a current signal, the measurement arrangement being operative when so disposed to measure the load drawn current signal. The current measurement apparatus 100 also comprises a signal source 112 which is operative to apply a reference input signal to the measurement arrangement 110, 114 whereby an output signal from the measurement arrangement comprises a load output signal corresponding to the load drawn current signal and a reference output signal corresponding to the reference input signal. The current measurement apparatus 100 further comprises processing apparatus 116 which is operative to receive the output signal and to make a determination in dependence on the reference output signal and the load output signal, the determination being in respect of at least one of the load drawn current signal and electrical power consumed by the load.

公开(公告)号：US09939464B2

公开(公告)日：2018-04-10

申请号：US15099308

申请日：2016-04-14

Applicant: Analog Devices Global

Inventor： Stephen James Martin Wood ,  Jonathan Ephraim David Hurwitz ,  Seyed Amir Ali Danesh

IPC: G01R27/08 ,  G01R19/00 ,  G01R15/14 ,  G01R1/20 ,  G01R11/25 ,  G01R15/04 ,  G01R21/14 ,  G01R27/02 ,  G01R35/04 ,  G01R23/02 ,  G01R21/00 ,  G01R19/02 ,  G01R27/16 ,  G01R27/26 ,  G01R27/28

CPC classification number: G01R15/146 ,  G01R1/203 ,  G01R11/25 ,  G01R15/04 ,  G01R15/14 ,  G01R19/0084 ,  G01R19/0092 ,  G01R19/02 ,  G01R21/00 ,  G01R21/133 ,  G01R21/14 ,  G01R23/02 ,  G01R27/02 ,  G01R27/16 ,  G01R27/26 ,  G01R27/28 ,  G01R35/04

Abstract: The present invention relates to current measurement apparatus 100. The current measurement apparatus 100 comprises a measurement arrangement 110, 114 which is configured to be disposed in relation to a load 108 which draws a current signal, the measurement arrangement being operative when so disposed to measure the load drawn current signal. The current measurement apparatus 100 also comprises a signal source 112 which is operative to apply a reference input signal to the measurement arrangement 110, 114 whereby an output signal from the measurement arrangement comprises a load output signal corresponding to the load drawn current signal and a reference output signal corresponding to the reference input signal. The current measurement apparatus 100 further comprises processing apparatus 116 which is operative to receive the output signal and to make a determination in dependence on the reference output signal and the load output signal, the determination being in respect of at least one of the load drawn current signal and electrical power consumed by the load.

公开(公告)号：US20170363664A1

公开(公告)日：2017-12-21

申请号：US15185603

申请日：2016-06-17

Applicant: Analog Devices Global

Inventor： Jonathan Ephraim David Hurwitz ,  Seyed Amir Ali Danesh ,  William Michael James Holland ,  John Stuart

IPC: G01R19/25 ,  G01R35/00 ,  G01R21/133

Abstract: An apparatus is provided that can estimate a transfer function, for example of current measurement systems, voltage measurement systems and power measurement systems, and also provide an estimate of certainty about the transfer function. This enables customers to have confidence that they are not being overcharged for electricity.

公开(公告)号：US20160341769A1

公开(公告)日：2016-11-24

申请号：US15229815

申请日：2016-08-05

Applicant: Analog..Devices..Global

Inventor： Seyed Amir Ali Danesh ,  Jonathan Ephraim David Hurwitz

IPC: G01R19/00

CPC classification number: G01R19/00 ,  G01R19/16547 ,  G01R19/2506 ,  G01R21/06 ,  G01R23/02 ,  G01R31/025 ,  G01R35/005 ,  H02H1/0015 ,  H02H3/006 ,  H02H3/32

Abstract: The present invention relates to current measurement apparatus. The current measurement apparatus comprises first and second measurement devices with each of the first and second measurement devices being operative to measure current in a respective one of a live conductor and a neutral conductor substantially simultaneously. The current measurement apparatus is operative to make plural different determinations in dependence on the substantially simultaneous current measurements.

公开(公告)号：US09411003B2

公开(公告)日：2016-08-09

申请号：US13684213

申请日：2012-11-22

Applicant: Analog Devices Global

Inventor： Seyed Amir Ali Danesh ,  Jonathan Ephraim David Hurwitz

IPC: H02H3/00 ,  G01R31/02 ,  G01R19/00 ,  G01R23/02 ,  H02H3/32 ,  G01R35/00 ,  G01R21/06

CPC classification number: G01R19/00 ,  G01R19/16547 ,  G01R19/2506 ,  G01R21/06 ,  G01R23/02 ,  G01R31/025 ,  G01R35/005 ,  H02H1/0015 ,  H02H3/006 ,  H02H3/32

Abstract: The present invention relates to current measurement apparatus. The current measurement apparatus comprises first and second measurement devices with each of the first and second measurement devices being operative to measure current in a respective one of a live conductor and a neutral conductor substantially simultaneously. The current measurement apparatus is operative to make plural different determinations in dependence on the substantially simultaneous current measurements.

Abstract translation: 本发明涉及电流测量装置。 电流测量装置包括第一和第二测量装置，其中第一和第二测量装置中的每一个基本上同时测量活体导体和中性导体的相应一个中的电流。 电流测量装置可操作以根据基本上同时的电流测量值进行多个不同的确定。

公开(公告)号：US10381948B2

公开(公告)日：2019-08-13

申请号：US15923381

申请日：2018-03-16

Applicant: Analog Devices Global

Inventor： Jonathan Ephraim David Hurwitz ,  Seyed Amir Ali Danesh ,  William Michael James Holland

IPC: H02M7/217 ,  H02M7/00

Abstract: A power conversion apparatus or system can be configured to receive a high voltage alternating current (AC) signal at an input and to provide in dependence thereon a low voltage direct current (DC) signal from an output stage. The power conversion apparatus can include a main path comprising a high voltage capacitor in series with the input. In an example, the capacitor comprises a portion of an electric field energy harvesting system.

公开(公告)号：US20190079117A1

公开(公告)日：2019-03-14

申请号：US15700867

申请日：2017-09-11

Applicant: Analog Devices Global Unlimited Company

Inventor： Jonathan Ephraim David Hurwitz ,  William Michael James Holland ,  Seyed Amir Ali Danesh

IPC: G01R15/20 ,  G01R19/00 ,  G01R15/14 ,  G01R21/08 ,  G01R33/36 ,  G01R1/20

Abstract: A measurement circuit is arranged to make several measurements, either at different times or in respect of different frequency components of currents measured by current sensors in respective phases of a multiphase supply system. The measurements are then used to correct for discrepancies in the transfer function of the sensors.

公开(公告)号：US09823275B2

公开(公告)日：2017-11-21

申请号：US14895868

申请日：2014-05-30

Applicant: Analog Devices Global

Inventor： Seyed Amir Ali Danesh ,  William Michael James Holland ,  John Stuart ,  Jonathan Ephraim David Hurwitz

IPC: G01R27/08 ,  G01R19/00 ,  G01R17/00 ,  G01R17/02 ,  G01R15/14 ,  G01R27/14 ,  G01R19/25 ,  G01R1/20 ,  G01R19/165

CPC classification number: G01R17/00 ,  G01R1/203 ,  G01R15/144 ,  G01R15/146 ,  G01R17/02 ,  G01R19/0084 ,  G01R19/0092 ,  G01R19/16542 ,  G01R19/2513 ,  G01R27/08 ,  G01R27/14

Abstract: The present invention relates to electrical measurement apparatus (10). The electrical measurement apparatus (10) comprises a measurement arrangement (20,24) configured to be disposed in relation to an electrical circuit (12,14,16,18) which bears an electrical signal, the measurement arrangement (20,24) being operative when so disposed to measure the electrical signal. The electrical measurement apparatus (10) further comprises a signal source (22) operative to apply a reference input signal to the measurement arrangement (20,24) whereby an output signal from the measurement arrangement comprises an electrical output signal corresponding to the electrical signal and a reference output signal corresponding to the reference input signal, the reference input signal having a substantially piecewise constant form which is repeated over each of plural cycles. The electrical measurement apparatus (10) yet further comprises processing apparatus (26) which is operative: to determine at least one cumulative representation, determination of the cumulative representation comprising summing plural received sections of the output signal, each of the plural received sections corresponding to at least a part and to a same part of the cycle of the reference input signal; and to determine at least one of: a transfer function for the measurement arrangement; a change in a transfer function for the measurement arrangement; and the electrical signal, in dependence on the at least one cumulative representation and the reference input signal.

公开(公告)号：US20170299636A1

公开(公告)日：2017-10-19

申请号：US15583257

申请日：2017-05-01

Applicant: Analog Devices Global

Inventor： Jonathan Ephraim David Hurwitz ,  Seyed Amir Ali Danesh ,  William Michael James Holland

IPC: G01R19/00 ,  G01R35/00 ,  G01R17/02

CPC classification number: G01R19/0092 ,  G01R17/02 ,  G01R35/005

Abstract: Current measurement apparatus comprises a measurement arrangement and a signal source. The measurement arrangement is configured to measure a current signal drawn by a load. The signal source is operative to apply a reference input signal to the measurement arrangement whereby an output signal from the measurement arrangement comprises a load output signal corresponding to the load drawn current signal and a reference output signal corresponding to the reference input signal. The signal source comprises a current multiplier which defines first and second current paths and is configured such that: the first path carries a multiplier input current signal; the second path carries a multiplier output current signal which determines the reference input signal and which corresponds to the multiplier input current signal multiplied by a multiplier value determined by the current multiplier; and the multiplier input current signal and the multiplier output current signal are carried on their respective paths in a same direction relative to a power supply voltage. Power drawn through the second path as divided by the multiplier value is less than the power drawn through the first path.