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:
Dec. 26, 2006
Filed:
Jun. 09, 2005
Paul A. Zank, Brookline, NH (US);
Eldon M. Sutphin, Merrimack, NH (US);
David W. Buchanan, Brookline, NH (US);
George P. Succi, Merrimack, NH (US);
Paul A. Zank, Brookline, NH (US);
Eldon M. Sutphin, Merrimack, NH (US);
David W. Buchanan, Brookline, NH (US);
George P. Succi, Merrimack, NH (US);
Bae Systems Information and Electronic Systems Integration Inc., Nashua, NH (US);
Abstract
A robust, easily deployable, covert, passive intrusion detection system uses one or more E-field sensors to detect the presence of a moving individual and to provide an indication of the presence of the individual adjacent the sensor based on E-field distortion produced by the individual. Single-ended and differential E-field sensors with noise canceling and a guarding circuit provide sufficient sensitivity, with filtering from 0.5 Hz to 8.0 Hz selecting only human intruders. Either visible or invisible flashing light sources at the sensor indicate the presence of a moving individual at the sensor, thus to provide intruder location without the necessity of providing a geolocation system.