Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2005-03-15
2005-03-15
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
Reexamination Certificate
active
06868348
ABSTRACT:
A data collector having a digital signal processing circuit that receives a digitized vibration signal, and performs processing steps to isolate high frequency pulses in the digitized vibration signal and quantify energy content of those pulses by detecting a peak negative value of the digitized peak-to-peak amplitude of the received vibration signal, and then using this peak negative value to compute a maximum peak-to-peak value of the received vibration signal. Periodically, the maximum peak-to-peak value and peak negative value are reduced in magnitude by a decay factor, such that the peak negative value and maximum peak-to-peak value decay over time. The decay factors used in computing the maximum peak-to-peak value and peak negative value are determined by the digital signal processing circuit and may be readily changed. As a consequence, high frequency processing performed by the digital signal processing circuit may be readily adapted to the particular frequency characteristics of the machine being analyzed for predictive maintenance, without modification of the analog circuitry of the data collector. The resulting maximum peak-to-peak value comprises a peak-detected digital output signal that may be stored and/or displayed to a user as a reflection of the high frequency content of the vibration signal, or frequency transformed for storage and/or display to a user.
REFERENCES:
patent: 3895343 (1975-07-01), Farr
patent: 4352293 (1982-10-01), Kurihara et al.
patent: 4885724 (1989-12-01), Read et al.
patent: 4894644 (1990-01-01), Thomas
patent: 5109700 (1992-05-01), Hicho
patent: 5216921 (1993-06-01), Tsuboi
patent: 5407265 (1995-04-01), Hamidieh et al.
patent: 5412985 (1995-05-01), Garcia et al.
patent: 5477730 (1995-12-01), Carter
patent: 5511422 (1996-04-01), Hernandez
patent: 5571966 (1996-11-01), Tsuboi
patent: 5579232 (1996-11-01), Tong et al.
patent: 5633811 (1997-05-01), Canada et al.
patent: 5686669 (1997-11-01), Hernandez et al.
patent: 5687735 (1997-11-01), Forbes et al.
patent: 5808903 (1998-09-01), Schiltz et al.
patent: 5847658 (1998-12-01), Irie et al.
patent: 5852793 (1998-12-01), Board et al.
patent: 5854994 (1998-12-01), Canada et al.
patent: 5943634 (1999-08-01), Piety et al.
patent: 5995910 (1999-11-01), Discenzo
patent: 6199018 (2001-03-01), Quist et al.
patent: 6260004 (2001-07-01), Hays et al.
patent: 6275781 (2001-08-01), Maness et al.
patent: 6301572 (2001-10-01), Harrison
patent: 6321602 (2001-11-01), Ben-Romdhane
patent: WO9635250 (1996-11-01), None
Robinson et al.,Peak Value (Peak Value™) Analysis: Advantageous Over Demodulation for Gearing Systems and Slow Spead Bearings, Presented at Piedmont Chapter of Vibration Institute; Charlotte, NC, Dec. 1, 1999.
Stoutenburg Donn V.
Xu Ming
Barlow John
Entek IRD International Corporation
Gerasimow Alexander M.
Pretlow Demetrius
Wood Herron & Evans LLP
LandOfFree
Adaptive high frequency energy detection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive high frequency energy detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive high frequency energy detection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3457991