Daniel Stuart Duggan

US Patent:

6888453, May 3, 2005

Filed:

Jun 20, 2002

Appl. No.:

10/177451

Inventors:

Donald G. Lutz - San Ramon CA, US
Daniel Duggan - Danville CA, US

Assignee:

Pentagon Technologies Group, Inc. - Livermore CA

International Classification:

G08B029/00
G06F011/00

US Classification:

340506, 702188

Abstract:

An environmental monitoring system is disclosed including a plurality of sensors, a plurality of sensor modules each electrically connected to one of the plurality of sensors for generating a ID signal that uniquely identifies the one sensor electrically connected thereto, a plurality of first electrical connectors each electrically connected to one of the sensor modules and a central monitoring unit that includes a plurality of second electrical connectors for connection with the first electrical connectors, a CPU for receiving the ID signals via the first and second electrical connectors for identifying each of the sensors in response to the received ID signals and for configuring operating parameters for each of the identified sensors, and a storage medium for storing sensor data corresponding to the sensor signals. Other elements of the monitoring system can include a power supply, at least one input/output module and calibration ports.

US Patent:

7010991, Mar 14, 2006

Filed:

Sep 11, 2001

Appl. No.:

09/952900

Inventors:

Donald G. Lutz - San Ramon CA, US
Daniel Duggan - Danville CA, US

Assignee:

Pentagon Technologies Group, Inc. - Fremont CA

International Classification:

G01N 1/00

US Classification:

7386433, 7386471

Abstract:

A surface particle detector that includes a scanner slidable over a surface, a particle counter for counting particles passed therethrough, and a conduit connected between the scanner and the particle counter. The particle counter includes a pump for creating an airstream for drawing particles from the surface, through the scanner and conduit, to the particle counter, and back to the scanner. A sensor measures the airstream flow rate, and a controller controls the pump speed based upon the sensed airstream flow rate. The conduit attaches to the particle counter via a first connector, which contains electronic indicia identifying the type of scanner attached to the other end of the conduit. The controller controls the particle counter in response to the detected electronic indicia. The particle counter also includes a removable filter cartridge with a filter element that captures the counted particles for laboratory analysis.