Measuring and testing – Vibration – Sensing apparatus
Reexamination Certificate
2006-07-11
2006-07-11
Williams, Hezron (Department: 2856)
Measuring and testing
Vibration
Sensing apparatus
C073S655000, C356S005110
Reexamination Certificate
active
07073384
ABSTRACT:
A method and apparatus (10) is provided which employs phase or amplitude modulated electromagnetic probing waves (20) (in optical or microwave frequency ranges or both) emitted toward a vibrating object (8). The optical and/or microwave probing signals (20) remotely irradiate an object (8) of interest. The object (8) reflects and/or scatters the probing wave (20) toward a receiver (22). The reflected/scattered modulated signal (24) is received with a remote sensor (receiver) (22). Vibration causes additional phase modulation to the probing wave (20). At the receiving end, the signal is demodulated to extract and analyze the vibration waveform (26,28). The present invention can be utilized for nondestructive testing, monitoring of technological processes, structural integrity, noise and vibration control, mine detection, etc.
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Donskoy Dimitri
Sedunov Nikolay
Whittaker Edward A.
McCarter & English LLP
Saint-Surin Jacques
Stevens Institute of Technology
Williams Hezron
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