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 20020105343A1
  • Filed: 12/11/2001
  • Published: 08/08/2002
  • Est. Priority Date: 06/11/1999
  • Status: Active Grant
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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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