System for a machine having a large number of proximity sensors, as well as a proximity sensor, and a primary winding for this purpose

  • US 6,749,119 B2
  • Filed: 12/11/2001
  • Issued: 06/15/2004
  • Est. Priority Date: 06/11/1999
  • Status: Expired due to Fees
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First Claim
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1. A system for a machine, comprising:

  • a proximity sensor generating sensor information;

    a transmitting device transmitting the sensor information from said proximity sensor and emitting radio signals containing the sensor information to a central receiving device connected to a process computer for the machine;

    a secondary winding connected to said proximity sensor for drawing power from a medium-frequency magnetic field;

    a medium-frequency oscillator; and

    a primary winding being fed from said medium-frequency oscillator, and provided for supplying said proximity sensor with electrical power without requiring wires.

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