Microphone Phased Array Machinery Fault Diagnostic System

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$88,844.00
Award Year:
2005
Program:
SBIR
Phase:
Phase I
Contract:
FA9101-05-M-0037
Award Id:
73306
Agency Tracking Number:
F051-304-2398
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
306 Seminole Dr., Blacksburg, VA, 24060
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
175964720
Principal Investigator:
PatricioRavetta
Research Engineer
(540) 357-1093
avec_inc@verizon.net
Business Contact:
RicardoBurdisso
President
(540) 357-1093
avec_inc@verizon.net
Research Institute:
n/a
Abstract
A microphone phased array machinery fault diagnostic system is proposed. In this system, a microphone phased array is positioned such as to have a direct line of sight to the machine to be monitored. The microphone signals are recorded simultaneously and used to scan or beamform over a grid enclosing the machine to capture its acoustic signature. The acoustic image is then integrated to obtain a machine noise spectrum that is used to identify damage or faults by an automated expert system. The architecture of the proposed fault diagnostic system consists of two main separated physical subsystems. The first subsystem consists of the microphone phased array, data acquisition system, and a computer to generate the cross spectral matrix of the microphone signals. This component is a single physical unit mounted in the industrial plant. The cross spectral matrix is then transferred through a wireless link to the second subsystem which is a computer cluster to perform the beamforming, integration, and fault diagnostic of the equipment. These two subsystems are two distinct hardware setups interconnected through a wireless link, i.e. they are not physically connected.

* information listed above is at the time of submission.

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