SYSTEM FOR ELECTRICAL POWER SUPPLY AND FOR TRANSMITTING DATA WITHOUT ELECTRICAL CONTACT

  • US 20100104031A1
  • Filed: 03/10/2008
  • Published: 04/29/2010
  • Est. Priority Date: 03/27/2007
  • Status: Abandoned Application
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First Claim
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1. Contact-free power supply and contact-free data transmission system including a transmitter having an electrical energy source and a receiver that is not self-contained with regard to its electrical power supply, in which the transmitter and the receiver respectively include a primary winding and a secondary winding capable of being in a magnetic flux transfer relationship, and the transmitter includes a circuit for applying, on the primary winding, a low-frequency alternating power supply current so as to produce, on the secondary winding, a current used for the electrical power supply of the receiver, and the transmitter and receiver have data transmission circuits connected to the primary and secondary windings, which system is wherein the data transmission circuit on the transmitter side is capable of selectively directly modifying the waveform of said alternating power supply current, and in that the data transmission circuit on the receiver side is capable of detecting these waveform modifications so as to respectively transmit, from the transmitter to the receiver, data of different values corresponding to the different waveforms, in which the frequency of the alternating power supply current is constant.

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