David John Sevey
Burglar Alarm in Gardnerville, NV

License number
Utah 372094-6502
Issued Date
Jun 1, 1999
Expiration Date
Jul 31, 2002
Category
Burglar Alarm
Type
Burglar Alarm Company Agent
Address
Address
Gardnerville, NV

Professional information

David Sevey Photo 1

Systems And Methods For Calibrating Triaxial Accelerometers

US Patent:
8099994, Jan 24, 2012
Filed:
Feb 29, 2008
Appl. No.:
12/040511
Inventors:
Robert Stachow - Carson City NV, US
Mark Allen Woodmansee - Minden NV, US
Jeff Ham - Pearland TX, US
David Sevey - Gardnerville NV, US
Assignee:
General Electric Company - Schenectady NY
International Classification:
G01P 21/00, G01C 19/00
US Classification:
73 137, 702104
Abstract:
A method for calibrating a multiple-triad triaxial accelerometer is provided. The method may include receiving accelerometer measured output from a first measurement triad and at least one additional measurement triad of the accelerometer. The method may further include aligning the output of a x, y, and z components of the first measurement triad to be substantially orthogonal with respect to each other, aligning the output of x, y, and z components of at least one additional measurement triad to be substantially orthogonal with respect to each other, and rotating the output of at least one measurement triad so the outputs of all measurement triads substantially align with each other. The method may further include storing the result of the alignment and rotation associated with at least one calibration function associated with the multiple-triad triaxial accelerometer. The alignment and rotation may be performed substantially simultaneously.


David Sevey Photo 2

Method And System For Calibrating Sensors

US Patent:
2008017, Jul 24, 2008
Filed:
Jan 22, 2007
Appl. No.:
11/656741
Inventors:
Mark Allen Woodmansee - Minden NV, US
Jeffrey Alan Ham - Minden NV, US
Lam Arthur Campbell - Minden NV, US
Elizabeth Anne Oakden - Gardnerville NV, US
Robert Paul Stachow - Carson City NV, US
David John Sevey - Gardnerville NV, US
International Classification:
G01P 21/00
US Classification:
702 95
Abstract:
A method for calibrating a sensor includes providing a fixture that defines a first coordinate system, providing a chassis, and orienting a plurality of sensor elements to form a misaligned coordinate system, wherein the misaligned coordinate system axes are oriented at other than right angles with respect to each other. The method also includes coupling the sensor to be calibrated to the fixture and mathematically compensating the misaligned coordinate system to correspond with the first coordinate system.