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公开(公告)号：US11016126B2
公开(公告)日：2021-05-25
申请号：US15583257
申请日：2017-05-01
Applicant: Analog Devices Global Unlimited Company
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.
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公开(公告)号：US10527651B2
公开(公告)日：2020-01-07
申请号：US15910805
申请日：2018-03-02
Applicant: Analog Devices Global
IPC: G01R15/14 , G01R15/04 , G01R21/133 , G01R21/14 , G01R23/02 , G01R27/02 , G01R19/00 , G01R35/04 , G01R11/25 , G01R1/20 , G01R21/00 , G01R19/02 , G01R27/16 , G01R27/26 , G01R27/28
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.
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公开(公告)号：US10476458B2
公开(公告)日：2019-11-12
申请号：US15969242
申请日：2018-05-02
Applicant: Analog Devices Global Unlimited Company
Inventor： Jonathan Ephraim David Hurwitz , Jesus Bonache , Robert Sythes , Eamonn J. Byrne
IPC: H03F3/45
Abstract: It is often desirable to distinguish between an open circuit condition and a no signal condition. In both cases an input signal may be absent, but only one of these events represents a failure of the equipment. The present disclosure provides a way to use a difference amplifier to check for open circuit events, without requiring additional circuitry at the input of the amplifier.
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4.发明授权公开(公告)号：US10459013B2
公开(公告)日：2019-10-29
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 , G01R21/133 , G01R35/00 , G01R27/28
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.
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公开(公告)号：US20160291060A1
公开(公告)日：2016-10-06
申请号：US15099308
申请日：2016-04-14
Applicant: Analog Devices Global
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.
Abstract translation: 电流测量装置100本发明涉及电流测量装置100.电流测量装置100包括测量装置110,114，该测量装置被配置为相对于牵引电流信号的负载108设置，该测量装置在这样设置时可操作以测量 负载拉电流信号。 电流测量装置100还包括信号源112，其可操作以将参考输入信号施加到测量装置110,114，由此来自测量装置的输出信号包括对应于负载牵引电流信号的负载输出信号和参考 输出信号对应于参考输入信号。 当前测量装置100还包括处理装置116，其可操作以接收输出信号并根据参考输出信号和负载输出信号作出确定，所述确定涉及至少一个负载牵引电流 负载消耗的信号和电力。
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Patent Agency Ranking
公开(公告)号：US20160154029A1
公开(公告)日：2016-06-02
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: G01R17/00
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.
Abstract translation: 本发明涉及电测量装置（10）。 电测量装置（10）包括被配置为相对于承载电信号的电路（12,14,16,18）设置的测量装置（20,24），测量装置（20,24）是 当这样布置以测量电信号时操作。 电测量装置（10）还包括信号源（22），其操作以将参考输入信号施加到测量装置（20,24），由此来自测量装置的输出信号包括对应于电信号的电输出信号，以及 与参考输入信号相对应的参考输出信号，参考输入信号具有在多个周期中重复的大致分段常数形式。 电测量装置（10）还包括可操作的处理装置（26）：确定至少一个累积表示，累积表示的确定包括对输出信号的多个接收部分求和，多个接收部分中的每一个对应于 参考输入信号的周期的至少一部分和相同部分; 并且确定以下至少一个：所述测量装置的传递函数; 测量装置的传递函数的变化; 和电信号，这取决于至少一个累积表示和参考输入信号。
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公开(公告)号：US10712369B2
公开(公告)日：2020-07-14
申请号：US16003701
申请日：2018-06-08
Applicant: Analog Devices Global Unlimited Company
Inventor： Boris Lerner , Yogesh Jayaraman Sharma , Sefa Demirtas , Jochen Schmitt , Paul Blanchard , Arthur J. Kalb , Harvey Weinberg , Jonathan Ephraim David Hurwitz
Abstract: Embodiments of the present disclosure provide mechanisms for measuring currents flowing in one or more conductor wires. The mechanisms are based on using magnetic sensor pairs arranged within a housing with an opening for the wires, where each magnetic sensor pair can generate a pair of signals indicative of magnetic fields in two different directions. The outputs of the sensor pairs can be used to derive a measure of current(s) flowing through the one or more wires. The use of magnetic sensor pairs that can measure magnetic field in two different directions may enable simultaneous current measurement in multiple wires placed within the opening, improve accuracy of current measurements while relaxing requirements for precise control of the placement of the wire(s), reduce the impact of stray magnetic interference, and enable both AC and DC measurements.
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公开(公告)号：US20190245500A1
公开(公告)日：2019-08-08
申请号：US15969242
申请日：2018-05-02
Applicant: Analog Devices Global Unlimited Company
Inventor： Jonathan Ephraim David Hurwitz , Jesus Bonache , Robert Sythes , Eamonn J. Byrne
IPC: H03F3/45
Abstract: It is often desirable to distinguish between an open circuit condition and a no signal condition. In both cases an input signal may be absent, but only one of these events represents a failure of the equipment. The present disclosure provides a way to use a difference amplifier to check for open circuit events, without requiring additional circuitry at the input of the amplifier.
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公开(公告)号：US20190081601A1
公开(公告)日：2019-03-14
申请号：US16015657
申请日：2018-06-22
Applicant: Analog Devices Global Unlimited Company
Abstract: Differential sampling circuits may be adversely affected by changes in common mode voltage. Changes in the common mode voltage may alter the on resistance of transistor switches which it turn may mean that small signal changes are not correctly observed against a bigger common mode signal. The present disclosure relates to a way of improving the ability to resolve small differential signal changes by varying the supply or drive voltage to a component to compensate for common mode voltage changes.
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10.发明申请公开(公告)号：US20180358942A1
公开(公告)日：2018-12-13
申请号：US15616062
申请日：2017-06-07
Applicant: Analog Devices Global
Inventor： Jonathan Ephraim David Hurwitz
IPC: H03F3/45
Abstract: An amplifier circuit having improved common mode rejection is provided. This can be achieved by estimating the common mode value of an input signal and using this to adjust a target common mode voltage at the output of the amplifier. This can help avoid the differential gain becoming modified by the common mode voltage.
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