白丝美女被狂躁免费视频网站,500av导航大全精品,yw.193.cnc爆乳尤物未满,97se亚洲综合色区,аⅴ天堂中文在线网官网

Wireless power transmission device and control method therefor

專利號
US10097041B2
公開日期
2018-10-09
申請人
LG ELECTRONICS INC.（KR Seoul）
發(fā)明人
Byungsang Jung; Beomseok Chae; Yongcheol Park; Kyunghwan Kim
IPC分類
H02J50/12; H02J50/80
技術(shù)領(lǐng)域
power,wireless,receiver,resonant,unit,may,coil,in,control,lc
地域： Seoul

摘要

The present specification which relates to a wireless power transmission device and a control method, capable of transmitting and receiving power wirelessly comprises a power supply unit for supplying power to a receiving device to transmit power wirelessly; and a power transmission control unit for, periodically generating a waveform with a particular frequency, measuring an attenuation coefficient of the waveform at each cycle, measuring a variation in the attenuation coefficient at each cycle, and determining the type of an external material. The present invention has a technical feature wherein the power transmission control unit determines whether to transmit power wirelessly to the receiving device on the basis of the type of the external material.

說明書

The modulation method employed for the communication between the wireless power transmitter 100 and the wireless power receiver 200 may be an amplitude modulation. As aforementioned, the amplitude modulation is a backscatter modulation may be a backscatter modulation method in which the power communications modulation/demodulation unit 293 at the side of the wireless power receiver 200 changes an amplitude of the wireless power signal 10a formed by the power conversion unit 111 and the power reception control unit 292 at the side of the wireless power transmitter 100 detects an amplitude of the modulated wireless power signal 10b.

Modulation and Demodulation of Wireless Power Signal

Hereinafter, description will be given of modulation and demodulation of a packet, which is transmitted or received between the wireless power transmitter 100 and the wireless power receiver 200 with reference to FIGS. 10 and 11.

FIG. 10 is a view illustrating a configuration of transmitting or receiving a power control message in transferring power in a wireless manner disclosed herein, and FIG. 11 is a view illustrating forms of signals upon modulation and demodulation executed in the wireless power transfer disclosed herein.

權(quán)利要求

1
微信群二維碼
意見反饋