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    ON-LINE ACOUSTIC DETECTION OF BEARING DEFECTS
    2.
    发明专利
    ON-LINE ACOUSTIC DETECTION OF BEARING DEFECTS 未知

    公开(公告)号：CA1290845C

    公开(公告)日：1991-10-15

    申请号：CA574184

    申请日：1988-08-09

    Applicant: SERVO CORP OF AMERICA

    Inventor： BAMBARA JOSEPH E ,  FRAREY JOHN L ,  SMITH RICHARD L

    IPC: B61K9/04 ,  G01N29/14 ,  G01M13/04 ,  G01H1/00

    Abstract: This invention relates to apparatus for the detection of acoustic 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.

    BEARING DEFECT DETECTOR
    3.
    发明专利
    BEARING DEFECT DETECTOR 未知

    公开(公告)号：AU603968B2

    公开(公告)日：1990-11-29

    申请号：AU2169388

    申请日：1988-08-31

    Applicant: SERVO CORP OF AMERICA

    Inventor： BAMBARA JOSEPH E ,  FRAREY JOHN L ,  SMITH RICHARD L

    IPC: B61K9/04 ,  G01N29/14 ,  G01M13/04

    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.

    QUASI-DOPPLER DIRECTION FINDING EQUIPMENT
    5.
    发明专利
    QUASI-DOPPLER DIRECTION FINDING EQUIPMENT 未知

    公开(公告)号：CA1153451A

    公开(公告)日：1983-09-06

    申请号：CA365009

    申请日：1980-11-19

    Applicant: SERVO CORP OF AMERICA

    Inventor： BAMBARA JOSEPH E

    IPC: G01S3/54

    Abstract: QUASI-DOPPLER DIRECTION FINDING EQUIPMENT A quasi-doppler direction finder is provided wherein the alternate dipole elements are divided into two groups. Each of the groups is connected to an associated RF attenuator which is driven by a control signal 180.degree. out-of-phase from that for the other group. Commutation between dipoles occurs so that there is a 50% overlap of "on" time between adjacent dipoles. Switching for each dipole occurs when its associated modulating function passes through zero.

    BEARING DEFECT DETECTOR
    7.
    发明专利
    BEARING DEFECT DETECTOR 未知

    公开(公告)号：AU2169388A

    公开(公告)日：1989-04-06

    申请号：AU2169388

    申请日：1988-08-31

    Applicant: SERVO CORP OF AMERICA

    Inventor： BAMBARA JOSEPH E ,  FRAREY JOHN L ,  SMITH RICHARD L

    IPC: B61K9/04 ,  G01N29/14 ,  G01M13/04

    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.

    BEARING HEAT SIGNAL PROCESSING CIRCUIT
    8.
    发明专利
    BEARING HEAT SIGNAL PROCESSING CIRCUIT 未知

    公开(公告)号：CA1165837A

    公开(公告)日：1984-04-17

    申请号：CA373105

    申请日：1981-03-16

    Applicant: SERVO CORP OF AMERICA

    Inventor： BAMBARA JOSEPH E ,  SANVILLE W WOODWARD

    IPC: B61K9/00 ,  A61B17/70 ,  A61B17/86 ,  A61B19/00 ,  A61F2/00 ,  A61F2/30 ,  A61F2/44 ,  B61K9/06 ,  B61L1/10 ,  G08B21/00

    Abstract: RAILROAD CAR WHEEL BEARING HEAT SIGNAL PROCESSING CIRCUIT 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.

    9.
    发明专利
    未知

    公开(公告)号：FR2491708A1

    公开(公告)日：1982-04-09

    申请号：FR8118878

    申请日：1981-10-07

    Applicant: SERVO CORP OF AMERICA

    Inventor： BAMBARA JOSEPH E

    IPC: B61L25/04 ,  H04N7/18

    Abstract: A system to permit the visual observation of objects moving along a fixed path. The object is viewed through a television camera which images the object through an optic axis bending element. The bending element is angularly rotated in a sawtooth manner with the slope of the sawtooth determined by the speed at which the object moves along the path so as to track the object to immobilize the scene viewed by the mirror.

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