Security system and method
AssigneeSpatial Dynamics, Ltd.
InventorTex Yukl
Life of this patent
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Abstract
A microwave/dielectric-response-based security system, and a related methodology, for detecting contraband. The system (which implements the associated method) includes an interrogation region through which a target that is to be screened passes, an appropriate transmitter/receiver array that operates adjacent this region for illuminating, and monitoring a dielectric response received from, a target in the region, and electronics which effectively produce output data that is interpretable to identify the presence or absence of contraband associated with the illuminated target.
Claims20
A security system for contraband detection comprising:
- a portal defining an interrogation region therewithin into which region a screening target may be introduced;
- a transmitter/receiver array mounted in a defined at least partial perimeter around said region for illuminating the target by a first microwave beam and for monitoring the dielectric response to said first microwave beam to produce a dielectric response signal representative of the dielectric response of the target to microwave illumination;
- and
- electronics operatively connected with said transmitter/receiver array for energizing said array in accordance with defined microwave energy amplitude and timing characteristics and for monitoring said dielectric response signal, said electronics including a discriminator for comparing said dielectric response signal with a defined characteristic response signal, said electronics producing an indication of a difference therebetween meeting predefined criteria.
A security system for contraband detection comprising:
- a platform on which personnel may stand;
- a rotary drive mechanism adjacent said platform;
- a portal adjacent said platform and extending upwardly therefrom, said portal and said platform being rotatable by said rotary drive mechanism relative to one another, said portal including generally vertical upward extents each having antennae arrays therein operative to illuminate such personnel standing on said platform with microwave energy and to measure the dielectric response of such personnel to said illumination to produce a response signal representative of such dielectric response during relative rotation of said portal and said platform;
- and
- a processor for time-correlating said response signal with the relative rotation of said portal and said platform to produce spatio-temporal data indicative of the dielectric response of such personnel to such illumination, said processor further for comparing such data to previously stored baseline data and for annunciating any differences therebetween which meet predefined criteria indicating the presence of contraband adjacent such personnel.
A dielectrometric method for screening a human subject comprising:
- providing an interrogation region within which the subject reposes;
- illuminating the subject within the interrogation region with microwave energy from an array of plural transmitter/receiver antennae and monitoring the dielectric response therefrom;
- comparing the dielectric response with baseline physiological response data stored in memory to produce data representative of any difference therebetween;
- and
- evaluating such data by use of defined screening criteria.
Dependencies are inferred from the claim text.