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公开(公告)号：AU6883281A
公开(公告)日：1981-10-08
申请号：AU6883281
申请日：1981-03-27
Applicant: SERVO CORP OF AMERICA
Inventor： BAMBARA J E , SANVILLE W W
IPC: B61K9/00 , A61B17/70 , A61B17/86 , A61B19/00 , A61F2/00 , A61F2/30 , A61F2/44 , B61K9/06 , B61L1/10 , B61K9/04
Abstract: An improved method and circuit is provided for processing waveforms from a railway car heat signal to eliminate spurious signals and to differentiate between roller bearings and friction bearings in a railroad hot box detector system. The waveforms generated by passing bearings are discretely sampled and spurious signals are eliminated by considering only those signals that fall within the crossing points of a threshold value. Discrimination between roller bearings and friction bearings is obtained by determining the ratio of the sum of the discrete values of the amplitude of the waveform within a first set of samples between the crossing points to the sum of the discrete values of the amplitude of the waveform within a second set of samples between the crossing points.
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公开(公告)号：AU6954481A
公开(公告)日：1981-11-05
申请号：AU6954481
申请日：1981-04-15
Applicant: SERVO CORP OF AMERICA
Inventor： BAMBARA J E , SANVILLE W WOODWARD
Abstract: A railroad car hot box detector system is provided which includes a variable circuit means for processing the heat signal generated by an infra-red detector viewing a sensing zone along a section of track. The system includes a conditioning circuit which determines one or more conditions of the train (such as the wheel speed or temperature of the car bottom) and uses that information to vary the processing circuit to enable the heat signal to be processed optimally for the detected condition.
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公开(公告)号：SE9003239L
公开(公告)日：1991-08-01
申请号：SE9003239
申请日：1990-10-11
Applicant: SERVO CORP OF AMERICA
Inventor： BAMBARA J E
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公开(公告)号：SE9001955L
公开(公告)日：1991-01-07
申请号：SE9001955
申请日：1990-05-31
Applicant: SERVO CORP OF AMERICA
Inventor： BAMBARA J E
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公开(公告)号：SE8802321D0
公开(公告)日：1988-06-21
申请号：SE8802321
申请日：1988-06-21
Applicant: SERVO CORP OF AMERICA
Inventor： BAMBARA J E , FRAREY J L , SMITH R L
Abstract: This invention relates to apparatus for the detection of accustic impact frequencies, characteristic of bearing assembly failure during operation, which modulate an acoustic carrier frequency band. This apparatus allows for on-site or field application with high-level of ambient noise such as are present in railroad yards. This apparatus allows for early detection of such failures, so that a repair may be made before damaging heat build-up or catastrophic bearing failure occurs. Additionally, with sufficient early warning in railroad applications, a train may continue running to a railyard for convenient shop repair rather than expensive field repair.
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Patent Agency Ranking
公开(公告)号：SE9001955D0
公开(公告)日：1990-05-31
申请号：SE9001955
申请日：1990-05-31
Applicant: SERVO CORP OF AMERICA
Inventor： BAMBARA J E
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公开(公告)号：SE8102635L
公开(公告)日：1981-10-29
申请号：SE8102635
申请日：1981-04-27
Applicant: SERVO CORP OF AMERICA
Inventor： BAMBARA J E , SANVILLE W W
Abstract: A railroad car hot box detector system is provided which includes a variable circuit means for processing the heat signal generated by an infra-red detector viewing a sensing zone along a section of track. The system includes a conditioning circuit which determines one or more conditions of the train (such as the wheel speed or temperature of the car bottom) and uses that information to vary the processing circuit to enable the heat signal to be processed optimally for the detected condition.
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公开(公告)号：SE8102027L
公开(公告)日：1981-10-01
申请号：SE8102027
申请日：1981-03-30
Applicant: SERVO CORP OF AMERICA
Inventor： BAMBARA J E , SANVILLE W W
IPC: A61B17/70 , A61B17/86 , A61B19/00 , B61K9/00 , A61F2/00 , A61F2/30 , A61F2/44 , B61K9/06 , B61L1/10 , B61K9/04
Abstract: An improved method and circuit is provided for processing waveforms from a railway car heat signal to eliminate spurious signals and to differentiate between roller bearings and friction bearings in a railroad hot box detector system. The waveforms generated by passing bearings are discretely sampled and spurious signals are eliminated by considering only those signals that fall within the crossing points of a threshold value. Discrimination between roller bearings and friction bearings is obtained by determining the ratio of the sum of the discrete values of the amplitude of the waveform within a first set of samples between the crossing points to the sum of the discrete values of the amplitude of the waveform within a second set of samples between the crossing points.
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公开(公告)号：SE9003239D0
公开(公告)日：1990-10-11
申请号：SE9003239
申请日：1990-10-11
Applicant: SERVO CORP OF AMERICA
Inventor： BAMBARA J E
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公开(公告)号：SE8802321L
公开(公告)日：1989-04-03
申请号：SE8802321
申请日：1988-06-21
Applicant: SERVO CORP OF AMERICA
Inventor： BAMBARA J E , FRAREY J L , SMITH R L
Abstract: This invention relates to apparatus for the detection of accustic impact frequencies, characteristic of bearing assembly failure during operation, which modulate an acoustic carrier frequency band. This apparatus allows for on-site or field application with high-level of ambient noise such as are present in railroad yards. This apparatus allows for early detection of such failures, so that a repair may be made before damaging heat build-up or catastrophic bearing failure occurs. Additionally, with sufficient early warning in railroad applications, a train may continue running to a railyard for convenient shop repair rather than expensive field repair.
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