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Phase and amplitude detection in wireless energy transfer systems

A phase detection and phase technology, applied to the phase angle between voltage and current, using digital measurement technology for measurement, measurement devices, etc., can solve problems such as complex circuits, long calculation time, harmonic distortion, etc.

Active Publication Date: 2018-10-23
WITRICITY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing phase detection circuits, devices or systems may introduce harmonic distortion, require complex circuits, or require relatively long computation times

Method used

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  • Phase and amplitude detection in wireless energy transfer systems
  • Phase and amplitude detection in wireless energy transfer systems
  • Phase and amplitude detection in wireless energy transfer systems

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Embodiment Construction

[0043] The wireless energy transfer systems described herein can be implemented using a wide variety of resonators and resonant objects. As will be appreciated by those skilled in the art, important considerations for resonator-based power transfer include resonator quality factor and resonator coupling. For example, US patent application 13 / 428,142 published as US 2012 / 0184338 on July 19, 2012, US patent application 13 / 567,893 published as US 2013 / 0033118 on February 7, 2013, and US patent application 13 / 567,893 published on April 24, 2014 An extensive discussion of these issues, such as coupled mode theory (CMT), coupling coefficients and factors, quality factor (also known as Q factor), and impedance matching, is provided in US Patent Application 14 / 059,094, US 2014 / 0111019. The entire contents of each of these applications are hereby incorporated by reference.

[0044] Power transmission systems may rely on electronic circuits such as rectifiers, AC (alternating current)-...

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Abstract

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for detecting characteristics of an input signal. One aspect includes a first finite input response (FIR) filter, a second FIR filter, and a controller coupled with the first and second FIR filters. The first FIR filter receives an input signal and a first reference signal. The first FIR filter filters the first reference signal to generate a first sinusoidal signal and mixes the first sinusoidal signal and the input signal to generate a first mixed signal. The second FIR filter receives the input signal and a second reference signal. The second FIR filter filters the second reference signal to generate a second sinusoidal signal and mixes the second sinusoidal signal and the input signal togenerate a second mixed signal. The controller determines characteristics of the input signal based on the first and second mixed signals.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application 62 / 241,194, filed October 14, 2015, which is hereby incorporated by reference in its entirety. Background technique [0003] An electronic device may need to detect the phase of a current signal or a voltage signal in the circuit of the device or in the circuit of other devices within the system. In some applications, an electronic device may need to determine the phase difference between two signals. Existing phase detection circuits, devices or systems may introduce harmonic distortion, require complex circuits, or require relatively long computation times. Contents of the invention [0004] In general, the invention features phase and amplitude detection circuits and devices. In a first aspect, the invention is characterized by a phase detection device comprising an input terminal, a signal generator, a first mixer connected to the signal genera...

Claims

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Application Information

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IPC IPC(8): G01R25/00G01R25/04
CPCG01R25/00G01R25/04G01R19/25G01R23/167H03H17/02H02J50/12H03H17/0045
Inventor P·G·和勒波维特施C·布恩罗斯特C·卡恩斯泰特
Owner WITRICITY CORP