The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2011
Filed:
Jul. 07, 2009
Charles Franklin Douglas, Jr., Middleton, NH (US);
Louis Stephen Palecki, Southborough, MA (US);
William Chambers Place, Acton, MA (US);
Charles Franklin Douglas, Jr., Middleton, NH (US);
Louis Stephen Palecki, Southborough, MA (US);
William Chambers Place, Acton, MA (US);
Assurance Technology Corporation, Carlisle, MA (US);
Abstract
A magnetic screening system uses directional gradiometers with high resolution and accuracy to measure magnetic field signatures of target objects (e.g., gun, knife, cell phone, keys) in a volume of interest. The measured signatures can be compared to signatures of known objects stored in a local database. Various mathematical processes may be used to identify or classify target object signatures. A magnetic screening system network according to embodiments of the present invention includes gradiometers, gradiometer processors, screening computers, and a management computer. The gradiometers sense target objects in a subject volume and the gradiometer processors process data obtained from the gradiometers. The screening computers process data output of the gradiometer processors and maintain local databases of signatures associated with known target objects. The management computer manages shared information for the gradiometer processors and maintains a central database of signatures associated with the known target objects.