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Buried meter and structure measurement system

  • US 20060170423A1
  • Filed: 12/25/2003
  • Published: 08/03/2006
  • Est. Priority Date: 01/30/2003
  • Status: Abandoned Application
First Claim
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1. A buried type measuring instrument, comprising at least:

  • a case to be buried in a structure;

    a sensing unit for sensing a physical value pertaining to a change of state of the structure, the sensing unit being formed in part of the case;

    a transducer for converting the physical value from the sensing unit into an electric signal;

    a transmission circuit unit for outputting a carrier signal modulated by an output of the transducer; and

    a transmission coil for receiving an output of the transmission circuit unit and generating a low frequency magnetic field signal, each of the transducer, the transmission circuit unit, and the transmission coil being accommodated in the case, wherein the low frequency magnetic field signal is used to transmit measurement data outside the structure.

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