Electro-acoustic device charging and power supply

摘要

An electroacoustic portable device charger and direct power adaptor. Ultrasonic transducers transmit acoustic energy which is converted into electrical power for the purposes of charging portable device batteries. Specifically, a wireless personal data device (such as a mobile phone) charging pad is disclosed. Feedback control loop and phased piezo array steer acoustic wavefronts into receiver transducers without the threat of electromagnetic interference. Parameters are monitored to maximize power efficiency and transmission. Device cradles and covers can be retrofitted to accommodate piezo electronics or integrated therein.

主权项

1. A portable device charging system comprising:
a transmitter comprising:
an electroacoustic charging pad having one or more electroacoustic transmitting elements;a power source;a signal generator;an amplifier;a proximity switch; anda first antenna; a receiver comprising:
one or more electroacoustic receiving elements;a battery; and,a second antenna; whereby, said first and second antennae are in electromagnetic communication and said electroacoustic transmitting and receiving elements are in ultrasonic communication, said proximity switch senses a location of said receiver on said charging pad, and said controller only activates said electroacoustic transmitting elements proximal to said location.