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公开(公告)号：US11454656B2
公开(公告)日：2022-09-27
申请号：US17237719
申请日：2021-04-22
摘要： A signal generating device for generation of measurement signals for an electrical system includes a housing which features an electrically conducting material, an energy reservoir arranged in the housing, a data interface arranged at the housing and designed to receive signal data, a coupling interface arranged at the housing and coupled to the electrical system, and a signal generator arranged in the housing. The signal generator is coupled to the electrical energy reservoir, to the data interface and to the coupling interface. The signal generator is designed, based on the signal data, to generate the measurement signals and to output them via the coupling interface. A corresponding measuring device is also included.
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公开(公告)号：US20220132632A1
公开(公告)日：2022-04-28
申请号：US17508367
申请日：2021-10-22
发明人： Edward M. Godshalk
摘要： Apparatuses and methods for rapid heating a load having magnetic material(s). In some embodiments, the apparatus includes a source of radio frequency (RF) signals and a power management assembly that receives the RF signals and that increases or decreases power of the RF signals. The apparatus additionally includes directional coupler(s) that measure power of the RF signals received from the power management assembly and power of the RF signals reflected from the load to the at least one directional coupler. The apparatus further includes a control assembly operable to receive the measured powers, determine a temperature of the load based on the measured powers, and send one or more control signals to the power management assembly instructing the power management assembly to increase or decrease power of the RF signals received from the source of RF signals to maintain the determined temperature of the load at a predetermined temperature.
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公开(公告)号：US20210239745A1
公开(公告)日：2021-08-05
申请号：US17237719
申请日：2021-04-22
摘要： A signal generating device for generation of measurement signals for an electrical system includes a housing which features an electrically conducting material, an energy reservoir arranged in the housing, a data interface arranged at the housing and designed to receive signal data, a coupling interface arranged at the housing and coupled to the electrical system, and a signal generator arranged in the housing. The signal generator is coupled to the electrical energy reservoir, to the data interface and to the coupling interface. The signal generator is designed, based on the signal data, to generate the measurement signals and to output them via the coupling interface. A corresponding measuring device is also included.
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公开(公告)号：US20180316444A1
公开(公告)日：2018-11-01
申请号：US15735584
申请日：2016-06-13
IPC分类号： H04B17/318 , G01R21/01
摘要： Disclosed is a channel-selective RF power sensor having a coupler and a channel-selective power measurement circuit. The said coupler is configured to obtain a sample of energy travelling on a main transmission line and provide the sample of energy to the channel-selective power measurement circuit. The sample of energy has a channel of interest. The channel-selective power measurement circuit is configured to measure RF energy information for the channel of interest in the sample of energy. Also disclosed is a method of measuring RF energy information for a channel of interest. The method includes providing a channel-selective RF power sensor and a main transmission line and obtaining a sample of energy from the main transmission line using a coupler of the channel-selective RF power sensor.
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公开(公告)号：US09929601B2
公开(公告)日：2018-03-27
申请号：US14335732
申请日：2014-07-18
IPC分类号： H02J50/12 , H02J50/80 , H02J50/40 , H02J5/00 , G01R29/08 , H02J7/02 , G01R21/01 , G01V3/12 , H04B5/00 , H02J7/00
CPC分类号： H02J50/12 , G01R21/01 , G01R29/0814 , G01V3/12 , H02J5/005 , H02J7/0052 , H02J7/007 , H02J7/025 , H02J50/40 , H02J50/80 , H04B5/0037 , H04B5/0075
摘要： An apparatus and method for lost power detection are described. In one implementation, an apparatus for wirelessly transferring power comprises a wireless power transmitter configured to wirelessly transmit power at a first power level sufficient to power or charge a chargeable device. The apparatus further comprises a controller configured to obtain a first power measurement of the first power level. The controller is further configured to determine a first adjusted power measurement of the first power measurement based on one or more tolerance values of the wireless power transmitter. The controller is further configured to determine a second adjusted power measurement of a second power measurement of a second power level received by the chargeable device based on one or more tolerance values of the chargeable device. The controller is further configured to determine if a power difference between the first and second adjusted power measurements exceeds a threshold value.
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公开(公告)号：US09614376B2
公开(公告)日：2017-04-04
申请号：US14464550
申请日：2014-08-20
CPC分类号： H02J50/12 , G01R21/01 , G01R29/0814 , G01V3/12 , H02J5/005 , H02J7/0052 , H02J7/007 , H02J7/025 , H02J50/40 , H02J50/80 , H04B5/0037 , H04B5/0075
摘要： Systems, methods and apparatus are disclosed for detecting power losses due to induction heating in wireless power receivers. In one aspect, an apparatus for wireless power transfer comprises a power transfer component configured to transmit wireless power to a wireless power receiver at a power level sufficient to charge or power a load. The apparatus further comprises a communications receiver configured to receive a message from the wireless power receiver, the message comprising a group identifier. The apparatus further comprises a controller circuit operationally coupled to the power transfer component and the communications receiver and configured to determine a power loss value based on the group identifier, the power loss value indicative of power loss due to induction heating presented by one or more wireless power receivers that are members of a group associated with the group identifier.
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公开(公告)号：US08577630B2
公开(公告)日：2013-11-05
申请号：US12747549
申请日：2007-12-14
CPC分类号： H01M10/48 , H01M10/425 , H01M10/44 , H01M2200/00
摘要： A system comprises a battery cell, control logic, and a battery drain latch circuit. The control logic is coupled to the battery cell and determines whether a battery pack has experienced a failure condition. The battery drain latch circuit is activated by the control logic, upon detection of a failure condition, to cause the battery cell to drain energy therefrom.
摘要翻译： 系统包括电池单元，控制逻辑和电池排出锁存电路。 控制逻辑耦合到电池单元并且确定电池组是否经历了故障状况。 当检测到故障状况时，电池排出锁存电路被控制逻辑激活，使电池单元从其中排出能量。
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公开(公告)号：US20050174101A1
公开(公告)日：2005-08-11
申请号：US10504680
申请日：2003-02-18
申请人： Ian Rose , Nigel Webb , Christopher Ward
发明人： Ian Rose , Nigel Webb , Christopher Ward
CPC分类号： G01R22/04 , G01R21/133
摘要： An unknown RF power is converted to a voltage by a detector (11). The voltage is converted to a number by a digitiser (12). A separate and fixed RF power reference (14) drives a second detector (15), whose voltage output is also converted to a number by the digitiser (12). The RF detectors are thermally coupled. Temperature variations in the RF power to voltage characteristic of the detector (11) are corrected by measuring the RF power reference (14) via the detector (15).
摘要翻译： 未知的RF功率由检测器（11）转换成电压。 通过数字转换器（12）将电压转换成数字。 独立且固定的RF功率参考（14）驱动第二检测器（15），其电压输出也由数字转换器（12）转换成数字。 RF检测器是热耦合的。 通过经由检测器（15）测量RF功率基准（14）来校正检测器（11）的RF功率与电压特性之间的温度变化。
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公开(公告)号：US06903542B2
公开(公告)日：2005-06-07
申请号：US10652288
申请日：2003-08-29
申请人： Fred Ives
发明人： Fred Ives
CPC分类号： G01R21/10
摘要： In one embodiment, a radio frequency (RF) power meter operates according to a variable loop bandwidth according to the nature of the RF signal to be measured. The RF power meter comprises: a first switch that switchably provides one of a first signal and a second signal, wherein the first signal is the RF signal to be measured; a first signal path for detecting an output signal from the first switch and for providing a first comparison signal according to a first bandwidth, a second signal path for detecting an output from the first switch and for providing a second comparison signal according to a second bandwidth, and a second switch that switchably provides one of the first comparison signal and the second comparison signal to the first switch to complete a closed-loop for the RF power meter.
摘要翻译： 在一个实施例中，射频（RF）功率计根据待测量的RF信号的性质根据可变环路带宽进行工作。 RF功率计包括：第一开关，其可切换地提供第一信号和第二信号中的一个，其中第一信号是待测量的RF信号; 用于检测来自第一开关的输出信号并根据第一带宽提供第一比较信号的第一信号路径，用于检测来自第一开关的输出并根据第二带宽提供第二比较信号的第二信号路径 以及第二开关，其可切换地将第一比较信号和第二比较信号中的一个提供给第一开关，以完成RF功率计的闭环。
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公开(公告)号：US5726566A
公开(公告)日：1998-03-10
申请号：US509683
申请日：1995-07-31
IPC分类号： G01R29/08 , G01R1/04 , G01R1/06 , G01R1/067 , G01R1/20 , G01R21/01 , G01R27/04 , G01R31/28 , G01R31/22
CPC分类号： G01R1/06772 , G01R31/2822 , G01R21/01
摘要： In apparatus for measuring the output power an RF transmitter stage (34) connected to an antenna (44) via a quarter wavelength stripline (38), a manual probe (20) is applied connect the output of the transmitter stage to a power meter (24) and connect the output end of the stripline (38) to ground. Thus, RF signals which were passed to the antenna (44) are switched to the power meter (24). All the circuitry including the antenna (44) is mounted on a printed circuit board (60) disposed within a housing (14) which has an aperture (18) to enable the probe (20) to be inserted. By providing a suitable meter, parameters other than RF power can be measured.
摘要翻译： 在用于通过四分之一波长带状线（38）测量连接到天线（44）的RF发射器级（34）的输出功率的装置中，应用手动探针（20）将发射器级的输出连接到功率计（ 24）并将带状线（38）的输出端连接到地。 因此，传递到天线（44）的RF信号被切换到功率计（24）。 包括天线（44）的所有电路安装在布置在具有孔（18）的壳体（14）内的印刷电路板（60）上，以使探针（20）能够被插入。 通过提供合适的仪表，可以测量射频功率以外的参数。
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