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1. 发明授权

US10359494B2 Proving unit for non-contact voltage measurement systems 有权
公开(公告)号：US10359494B2
公开(公告)日：2019-07-23
申请号：US15439473
申请日：2017-02-22
申请人： Fluke Corporation
发明人： David L. Epperson , Ricardo Rodriguez
IPC分类号： G01R35/00 , G01R19/18 , G01R15/14 , H02M7/44 , G01R1/22 , G01R19/00
摘要： Systems and methods provide a portable, verified voltage source that allows safe testing of separate non-contact voltage measurement systems. A proving unit of the present disclosure provides a known or specified alternating current (AC) voltage output across an insulated wire, which AC voltage may be fixed or may be user-selectable through a suitable user interface. The proving unit may include a visual indicator and/or an audible indicator that provides the user with an indication confirming that the proving unit is supplying an output voltage with the specifications of the proving unit, so the user will know that the proving unit is operating normally and is ready for testing a non-contact voltage measurement system. If the proving unit cannot provide the specified voltage output, the indicator(s) provides a signal to the user that the proving unit is currently non-functional.

2. 发明授权

US10254375B2 Proving unit for voltage measurement systems 有权
公开(公告)号：US10254375B2
公开(公告)日：2019-04-09
申请号：US15490550
申请日：2017-04-18
申请人： Fluke Corporation
发明人： David L. Epperson , Ricardo Rodriguez
IPC分类号： G01R35/00 , G01R19/18 , G01R15/14 , G01R19/00 , G01R1/22 , G01R27/08 , G01R31/08
摘要： Systems and methods provide a portable, verified voltage source that allows safe testing of separate non-contact voltage measurement systems. A proving unit of the present disclosure provides a known or specified alternating current (AC) voltage output across an insulated wire, which AC voltage may be fixed or may be user-selectable through a suitable user interface. The proving unit may include a visual indicator and/or an audible indicator that provides the user with an indication confirming that the proving unit is supplying an output voltage with the specifications of the proving unit, so the user will know that the proving unit is operating normally and is ready for testing a non-contact voltage measurement system. If the proving unit cannot provide the specified voltage output, the indicator(s) provides a signal to the user that the proving unit is currently non-functional. The proving unit may additionally verify contact voltage measurement systems (e.g., DMMs).

3. 发明授权

US09812989B1 Isolated power transfer device 有权
公开(公告)号：US09812989B1
公开(公告)日：2017-11-07
申请号：US15270470
申请日：2016-09-20
申请人： Silicon Laboratories Inc.
发明人： Timothy J. Dupuis
IPC分类号： H02M7/537 , H01L23/498 , H01L23/64 , H01L23/00 , H01L25/18 , H01L23/66 , H01L21/48 , H01L25/00 , H03F3/195 , H03F3/213 , G01R19/18
CPC分类号： G01R19/18 , H01L21/4853 , H01L21/4857 , H01L23/49822 , H01L23/49844 , H01L23/642 , H01L23/645 , H01L23/66 , H01L24/48 , H01L25/072 , H01L25/18 , H01L25/50 , H01L2223/6616 , H01L2223/665 , H01L2224/48227 , H01L2924/14253 , H02M3/33553 , H02M3/33592 , H02M3/3376 , H03B5/1212 , H03B5/1228 , H03B5/124 , H03B2200/0062 , H03F3/195 , H03F3/213 , H03F3/45179 , H03F2200/451
摘要： An isolated power transfer device includes a transformer formed in a multi-layer substrate of an integrated circuit package. A primary winding of the transformer is coupled to a first integrated circuit to form a DC/AC power converter and a secondary winding of the transformer is coupled to a second integrated circuit to form an AC/DC power converter. The first and second integrated circuits are electrically isolated from each other. The first integrated circuit includes a lightly doped drain MOSFET integrated with conventional CMOS devices and the second integrated circuit includes a Schottky diode integrated with conventional CMOS devices. The isolated power transfer device includes a capacitive channel for communication of information across an isolation barrier from the second integrated circuit to the first integrated circuit. Capacitors of the capacitive channel may be formed in the multi-layer substrate of the integrated circuit package.

4. 发明授权

US08575917B2 Multirange load detection circuitry 有权
标题翻译：多重负载检测电路
公开(公告)号：US08575917B2
公开(公告)日：2013-11-05
申请号：US12566593
申请日：2009-09-24
申请人： Nicholas A. Sims , Jeffrey J. Terlizzi
发明人： Nicholas A. Sims , Jeffrey J. Terlizzi
IPC分类号： G01R19/18
CPC分类号： G01R31/40 , H02J9/06 , H02J2009/007
摘要： Load detection circuitry is provided that may be used to monitor an output line. The load detection circuitry may include one or more current sensing resistors. A monitor circuit can measure voltages across the current sensing resistors to determine whether current is flowing through a load connected to the output line. In configurations with multiple different current sensing resistors, the monitor circuit can determine the amount of current that is flowing through the load based on the measured voltages. A switch may be interposed between the current sensing resistor and the output line. A current-limited voltage regulator may supply a voltage to the output line. The monitor circuit may periodically open the switch and monitor resulting voltage changes on the output line to determine whether an electronic device or other load is attached. Opening of the switch may be inhibited whenever current is sensed through a current sensing resistor.
摘要翻译：提供可用于监视输出线的负载检测电路。负载检测电路可以包括一个或多个电流感测电阻器。监控电路可以测量电流检测电阻上的电压，以确定电流是否流过连接到输出线的负载。在具有多个不同电流检测电阻的配置中，监视电路可以基于测量的电压确定流过负载的电流量。开关可插在电流检测电阻和输出线之间。电流限制电压调节器可以向输出线路提供电压。监视器电路可以周期性地打开开关并监视输出线上的所得电压变化，以确定电子装置或其他负载是否被连接。每当通过电流感测电阻感测到电流时，可以禁止开关的断开。

5. 发明申请

US20120032666A1 METHOD AND SYSTEM OF MEASURING CURRENT IN AN ELECTRIC METER 有权
标题翻译：在电表中测量电流的方法和系统
公开(公告)号：US20120032666A1
公开(公告)日：2012-02-09
申请号：US12849877
申请日：2010-08-04
申请人： David Hamo
发明人： David Hamo
IPC分类号： G01R19/18
CPC分类号： G01R1/203 , G01R19/0092 , G01R35/005
摘要： A method and system for measuring the current flowing through an electric meter. The electric meter includes a reactive sensor positioned in series with a bus bar contained in the meter. The reactive sensor includes an inductor and the voltage across the inductance is measured. A control unit contained in the electric meter calculates the current based on the detected voltage and the value of the inductor. The value of the inductor is determined by passing a reference current through the inductor at a known frequency, such as 50 Hz or 60 Hz, and the voltage drop across the inductor is measured. Once the value of the inductor is determined, the value is stored in the control unit.
摘要翻译：一种测量流过电表的电流的方法和系统。电表包括与包含在仪表中的母线串联定位的电抗传感器。电抗传感器包括电感器，并测量电感两端的电压。包含在电表中的控制单元基于检测到的电压和电感器的值来计算电流。通过使参考电流以已知频率（例如50Hz或60Hz）通过电感器来确定电感器的值，并测量电感器两端的电压降。一旦确定了电感的值，该值就被存储在控制单元中。

6. 发明授权

US07928720B2 Power conversion efficiency measurement system and method 有权
标题翻译：电力转换效率测量系统及方法
公开(公告)号：US07928720B2
公开(公告)日：2011-04-19
申请号：US12558582
申请日：2009-09-14
申请人： Ting-Chung Wang
发明人： Ting-Chung Wang
IPC分类号： G01R19/18
CPC分类号： H02M3/157 , H02M2001/0009
摘要： A system measures power conversion efficiency of a voltage regulator. A measurement setting module presets a maximum output current and a total measurement number, and calculates each target output current of the voltage regulator. A load adjustment module adjusts an impedance of the electronic load to equal current passing through the electronic load to the target output current of the voltage regulator. A calculation module calculates each output power and input power, and power conversion efficiencies for each sequence number of measurement.
摘要翻译：系统测量电压调节器的功率转换效率。测量设置模块预设最大输出电流和总测量数，并计算电压调节器的每个目标输出电流。负载调整模块将电子负载的阻抗调整为通过电子负载的电流等于电压调节器的目标输出电流。计算模块计算每个序列测量的每个输出功率和输入功率以及功率转换效率。

7. 发明申请

US20110074413A1 SYSTEM AND METHOD FOR CONTROLLING CURRENT IN GRADIENT COIL OF MAGNETIC RESONANCE IMAGING SYSTEM 有权
标题翻译：用于控制磁共振成像系统梯度线圈电流的系统和方法
公开(公告)号：US20110074413A1
公开(公告)日：2011-03-31
申请号：US12569138
申请日：2009-09-29
申请人： Perumal Venkatesa
发明人： Perumal Venkatesa
IPC分类号： G01R33/48 , G01R33/44 , G01R19/18
CPC分类号： G01R33/3852 , H02M7/487
摘要： In one embodiment, a multilevel inverter for generating an AC output voltage, having at least seven potential levels, from a DC voltage source such that the generated AC voltage produces a current in a gradient coil of a magnetic resonance imaging system is provided. The multilevel inverter comprises an input voltage supply device configured for providing a divided DC voltage, at least eight switching arms for deriving the AC output voltages from the divided DC voltages, each of the switching arms comprising an input terminal receiving the divided DC voltage, a switching device controlling the AC output voltage and an output terminal providing the AC output voltage, at least four diodes, each of the four diodes connected to a single pair of switching arms, the four diodes forming a full bridge having positive and negative nodes, one of the nodes connected to the input voltage supply device and another node connected to the input terminals of the switching arms and a controller coupled to the input voltage supply device and the four diodes, the controller configured for producing plurality of control signals for controlling the AC output voltage.
摘要翻译：在一个实施例中，提供一种多电平逆变器，用于从DC电压源产生具有至少七个电位电平的AC输出电压，使得所产生的AC电压产生磁共振成像系统的梯度线圈中的电流。多电平逆变器包括被配置为提供分压的DC电压的输入电压供给装置，至少八个用于从分压的DC电压导出AC输出电压的开关臂，每个开关臂包括接收分压的DC电压的输入端子，控制AC输出电压的开关装置和提供AC输出电压的输出端子，至少四个二极管，四个二极管中的每一个连接到单对开关臂，四个二极管形成具有正和负节点的全桥，一个连接到所述输入电压供应装置的节点和连接到所述开关臂的输入端子的另一节点以及耦合到所述输入电压供应装置和所述四个二极管的控制器，所述控制器被配置用于产生用于控制所述AC的多个控制信号输出电压。

8. 发明申请

US20100289481A1 APPARATUS AND METHOD FOR DC VOLTAGE MEASUREMENT 有权
标题翻译：用于直流电压测量的装置和方法
公开(公告)号：US20100289481A1
公开(公告)日：2010-11-18
申请号：US12561249
申请日：2009-09-16
申请人： Li Shuo HSIAO
发明人： Li Shuo HSIAO
IPC分类号： G01R19/18
CPC分类号： G01R19/003 , G01R19/18
摘要： The invention provides a method for DC voltage measurement. First, an input DC voltage is received. A temporary disturbance signal is then added to the input DC voltage to obtain a disturbed signal, wherein an amplitude of the temporary disturbance signal is greater than precision level of an analog-to-digital converter. The disturbed signal is then converted from analog to digital with the analog-to-digital converter to obtain a plurality of samples with different values. An average value is then derived from the samples. Finally, the average value is output as a measurement value of the input DC voltage.
摘要翻译：本发明提供一种直流电压测量方法。首先，接收输入直流电压。然后将暂时的干扰信号加到输入的DC电压上，以获得干扰的信号，其中临时干扰信号的幅度大于模 - 数转换器的精度电平。然后，利用模数转换器将受干扰的信号从模拟转换成数字，以获得具有不同值的多个采样。然后从样本中导出平均值。最后，平均值作为输入直流电压的测量值输出。

9. 发明授权

US07750619B2 Method and apparatus for measuring the frequency of a received signal 有权
标题翻译：用于测量接收信号频率的方法和装置
公开(公告)号：US07750619B2
公开(公告)日：2010-07-06
申请号：US11662714
申请日：2005-09-13
申请人： Richard Fawley
发明人： Richard Fawley
IPC分类号： G01R19/00 , G01R19/18
CPC分类号： G01R23/12 , G01R23/15
摘要： A method of measuring the frequency of a received signal comprising the steps of: generating a first phase signal by digitising the phase of the received signal; delaying the first phase signal by a predetermined amount to generate a second phase signal; calculating a phase difference between the first and the second phase signals; and calculating the frequency of the input signal from the phase difference.
摘要翻译：一种测量接收信号的频率的方法，包括以下步骤：通过数字化接收信号的相位来产生第一相位信号; 将第一相位信号延迟预定量以产生第二相位信号; 计算第一和第二相位信号之间的相位差; 以及从相位差计算输入信号的频率。

10. 发明授权

US07528734B2 System and method for automatically detecting power supply voltage 失效
标题翻译：自动检测电源电压的系统和方法
公开(公告)号：US07528734B2
公开(公告)日：2009-05-05
申请号：US11314049
申请日：2005-12-20
申请人： Heng-Chen Kuo
发明人： Heng-Chen Kuo
IPC分类号： G08B21/00 , G01R31/08 , G01R31/14 , G01R27/08 , G01R19/18 , H01H73/00 , H01H35/00 , H02M1/10 , B23K11/24 , H02J7/00
CPC分类号： H02H11/006 , Y10T307/625 , Y10T307/74 , Y10T307/858
摘要： A system for automatically detecting power supply voltage includes a voltage divider connected to a power supply, an A/D converter connected to the voltage divider, a detection module connected to the A/D converter for comparing a digital signal converted by the A/D converter with a reference signal stored in the detection module, a relay driving circuit connected to the detection module, a relay connected to the relay driving circuit and the power supply respectively, and an outlet coupled to the relay for outputting voltage. If the digital signal matches the reference signal, the detection module controls the relay driving circuit to turn on the relay to output voltage at the outlet. Relevant method for detecting power supply voltage is also provided.
摘要翻译：用于自动检测电源电压的系统包括连接到电源的分压器，连接到分压器的A / D转换器，连接到A / D转换器的检测模块，用于比较由A / D转换的数字信号转换器，具有存储在检测模块中的参考信号，连接到检测模块的继电器驱动电路，分别连接到继电器驱动电路和电源的继电器，以及连接到继电器以输出电压的出口。如果数字信号与参考信号相匹配，则检测模块控制继电器驱动电路将继电器导通到出口处的输出电压。还提供了用于检测电源电压的相关方法。

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