Louis S Palecki

US Patent:

7573257, Aug 11, 2009

Filed:

Oct 31, 2007

Appl. No.:

11/981717

Inventors:

Kai Wing Li - Chelmsford MA, US
Louis Stephen Palecki - Southborough MA, US
Antonio G. Rizzo - Nashua NH, US
Edward P. Bittner - Tyngsboro MA, US

Assignee:

Assurance Technology Corporation - Carlisle MA

International Classification:

G01R 35/00

US Classification:

324202

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. The magnetic screening system can operate in multiple modes, such as a tracking mode, measurement mode, calibration mode, and self-test mode. Calibration may be performed in substantially continous manner to allow calibration parameters to be adjusted during system operation (e. g. , tracking mode) to compensate for changes in conditions that may impact calibration parameters. Through use of unique processes and designs, the magnetic screening system can achieve a high rate of processing persons for target objects.

US Patent:

7898248, Mar 1, 2011

Filed:

Jul 7, 2009

Appl. No.:

12/459774

Inventors:

Louis Stephen Palecki - Southborough MA, US
William Chambers Place - Acton MA, US

Assignee:

Assurance Technology Corporation - Carlisle MA

International Classification:

G01R 33/02

US Classification:

324244, 324243, 340551

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.

US Patent:

20060197523, Sep 7, 2006

Filed:

Mar 4, 2005

Appl. No.:

11/073424

Inventors:

Louis Palecki - Southborough MA, US
William Place - Acton MA, US
Huichin Deng - Harvard MA, US
Paul Murray - Chelmsford MA, US
Charles Douglas - Middleton MA, US
Edward Bittner - Dracut MA, US
Kai Li - Chelmsford MA, US
Thomas Jewitt - Ayer MA, US
Antonio Rizzo - Nashua NH, US

Assignee:

Assurance Technology Corporation - Carlisle MA

International Classification:

G01R 33/02

US Classification:

324244000

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. In a network of magnetic screening systems, the magnetic screening systems can transmit signatures to a central signature database, and a management computer can share the central signature database with all of the magnetic screening systems on the network. The magnetic screening system can operate in multiple modes, such as a tracking mode, measurement mode, and self-test mode. Through use of unique processes and designs, the magnetic screening system can achieve a high rate of processing persons for target objects.

US Patent:

20070013372, Jan 18, 2007

Filed:

Jun 28, 2005

Appl. No.:

11/169147

Inventors:

Paul Murray - Chelmsford MA, US
Louis Palecki - Southborough MA, US
William Place - Acton MA, US

Assignee:

Assurance Technology Corporation - Carlisle MA

International Classification:

G01R 33/02

US Classification:

324244000

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. In a network of magnetic screening systems, the magnetic screening systems can transmit signatures to a central signature database, and a management computer can share the central signature database with all of the magnetic screening systems on the network. The magnetic screening system can operate in multiple modes, such as a tracking mode, measurement mode, and self-test mode. Through use of unique processes and designs, the magnetic screening system can achieve a high rate of processing persons for target objects.

US Patent:

20110285389, Nov 24, 2011

Filed:

Jan 24, 2011

Appl. No.:

13/012620

Inventors:

Thomas W. Jewitt - Ayer MA, US
Kai W. Li - Chelmsford MA, US
Louis S. Palecki - Southborough MA, US
William C. Place - Acton MA, US
Antonio G. Rizzo - Nashua NH, US

Assignee:

Assurance Technology Corporation - Carlisle MA

International Classification:

G01R 33/02

US Classification:

324244

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. In a network of magnetic screening systems, the magnetic screening systems can transmit signatures to a central signature database, and a management computer can share the central signature database with all of the magnetic screening systems on the network. The magnetic screening system can operate in multiple modes, such as a tracking mode, measurement mode, and self-test mode. Through use of unique processes and designs, the magnetic screening system can achieve a high rate of processing persons for target objects.

US Patent:

20110285390, Nov 24, 2011

Filed:

Jan 24, 2011

Appl. No.:

13/012622

Inventors:

Thomas W. Jewitt - Ayer MA, US
Louis S. Palecki - Southborough MA, US

Assignee:

Assurance Technology Corporation - Carlisle MA

International Classification:

G01R 33/022

US Classification:

324244

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. In a network of magnetic screening systems, the magnetic screening systems can transmit signatures to a central signature database, and a management computer can share the central signature database with all of the magnetic screening systems on the network. The magnetic screening system can operate in multiple modes, such as a tracking mode, measurement mode, and self-test mode. Through use of unique processes and designs, the magnetic screening system can achieve a high rate of processing persons for target objects.