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System and method for the wireless signal transmission between a measuring head and a remote receiver

  • US 5,949,352 A
  • Filed: 10/23/1997
  • Issued: 09/07/1999
  • Est. Priority Date: 05/11/1995
  • Status: Expired due to Fees
First Claim
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1. A system for the wireless signal transmission between a checking probe (1) and a remote receiver (11), comprising:

  • a sensor (3) located in the probe (1), for detecting a change in the state of the probe (1) and providing an associated checking signal;

    a signal generator (5, 6, 13,

         15), connected to the sensor (3) and adapted for generating a signal comprising information about the state of the probe; and

    a timing generator (16,

         17) connected to the signal generator characterized in that,said signal generator (5, 6, 13,

         15) is adapted to generate a serial signal with a sequence of bits, coded to comprise said information about the state of the probe,said timing generator (16,

         17) is adapted to define a nominal bit period (TN) for the bits of said sequence, and in that the system further comprises;

    a detector (14), connected both to the sensor (3), for revealing the instant (C1, C2) within said nominal bit period (TN) when there occurs a change in the state of the probe (1) on the basis of the checking signal, and to the timing generator (16,

         17) for changing, according to said instant (C1, C2), the bit period (T1, T2) of at least one of the bits of said sequence in such a way that the time elapsing between the instant (C1, C2) of change of state and the end (F1, F2) of the sequence of bits assumes a substantially constant value (τ

    ).

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