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System and apparatus for detecting and locating sources of radiation

  • US 6,259,095 B1
  • Filed: 10/23/1998
  • Issued: 07/10/2001
  • Est. Priority Date: 10/23/1998
  • Status: Expired due to Term
First Claim
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1. A system for detecting and locating sources of radiation associated with a locator at a region of interest within an environment evidencing background radiation, comprising:

  • a probe moveable within said region of interest and having a pulsed output corresponding with radiation from said source;

    a control assembly having a perceptible output including a display responsive to a first count rate value signal to provide a first perceptible count rate output, responsive to a second count rate value signal to provide a second perceptible count rate output, responsive to a third count rate value signal to provide a third perceptible count rate output, responsive to a graph signal to provide a perceptible bar graph output with segments energizable from first to last, and said control assembly supporting a target count switch actuable to derive first and second target count signals;

    a signal treatment circuit responsive to said probe pulsed output to carry out a validation thereof and derive a count signal; and

    a processing circuit responsive to said count signal and a first predetermined interval to derive said first count rate value signal, responsive to said first target count signal and a second interval to derive said second count rate value signal, and for deriving said graph signal sequentially energizing said segments from first to last in correspondence with said derivation of said second count rate value signal.

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