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Mobile mine detection system having plural color display

  • US 4,021,725 A
  • Filed: 03/05/1976
  • Issued: 05/03/1977
  • Est. Priority Date: 03/05/1976
  • Status: Expired due to Term
First Claim
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1. Detection apparatus operative to distinguish between and generate a plural color display representative of first and second magnetic pole characteristics of metal objects that affect a magnetic field, said apparatus comprising:

  • a vehicle adapted for movement along a directed course over a surface beneath which said objects are likely to be disposed;

    magnetic field sensing means, mounted on said vehicle, for generating analog voltage signals of first and second voltage polarity corresponding respectively to said first and second magnetic pole characteristics;

    scanner means, connected to said sensing means, for causing said sensing means to repetitiously effect scanning of said surfce transversely of said directed course so as to detect variations in magnetic field in accordance with said magnetic pole characteristics over a scanned area as said vehicle moves along said course;

    first deflection signal generating means, responsive to said movement along a directed course, for generating first deflection signals corresponding to said movement;

    second deflection signal generating means, coupled to said scanner means for generating second deflection signals corresponding to said scanning;

    voltage polarity detector means, coupled to said sensing means, for separating said analog signals into first polarity analog signals and second polarity analog signals representative of said first and second magnetic pole characteristics, respectively; and

    display means, responsive to said first and second polarity analog signals and to said first and second deflection signals, for providing a plural color map-like display of said variations in said first and second magnetic pole characteristics in relation to said scanned area of said surface traversed by said apparatus.

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