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Systems and methods for detecting radiation, biotoxin, chemical, and biological warfare agents using a multiple angle light scattering (MALS) instrument

  • US 20070195324A1
  • Filed: 11/29/2006
  • Published: 08/23/2007
  • Est. Priority Date: 09/19/2005
  • Status: Active Grant
First Claim
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1. A system for detecting an addition of a toxin to liquid, the system comprising:

  • an optical axis;

    a target zone, the optical axis intersecting the target zone;

    at least one light source configured to generate a light beam and direct the light beam through the target zone;

    an optic lens system configured to collect light scattered by a particle associated with the toxin in the liquid in the target zone and direct the scattered light to at least one detector, the detector configured to detect the light and generate a digital signal; and

    a computer system coupled with the detector, the computer system configured to execute a set of programmed instructions to identify and classify the particle associated with the toxin, compare counts per unit time to a threshold, and generate an alarm, the instructions causing the computer system to;

    extract events from the digital signal;

    calculate the similarity between the extracted event and a known event;

    classify the event based on the similarity;

    calculate a new count rate for the classification type associated with the toxin;

    compare the new count rate to a threshold; and

    generate an alarm if the count rate falls below the threshold.

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