Systems and methods for detecting radiation, biotoxin, chemical, and biological warfare agents using a multiple angle light scattering (MALS) instrument
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 beamand 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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Abstract
A particle detection system to identify and classify particles is programmed to capture digitized images of the particle generated by directing a light source through a fluid that includes the particle. The particle scatters the light and the scattered light is detected using a detector. The detector creates a digital signal corresponding to the particle, which is used by the system to generate a Bio-Optical Signature. This Bio-Optical Signature can then be used to classify the event, or particle. A count rate of the classified particles is monitored to detect a change that is representative of a toxin attack.
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Citations
64 Claims
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1. A system for detecting an addition of a toxin to liquid, the system comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method of monitoring liquid for a toxin attack comprising:
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monitoring the liquid with a multi-angle light scattering device; classifying detected particles; generating a count rate for the classes of particles; and generating an alarm if the count rate falls below a threshold. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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Specification