公开(公告)号：CA1165422A

公开(公告)日：1984-04-10

申请号：CA376324

申请日：1981-04-27

Applicant: SERVO CORP OF AMERICA

Inventor： BAMBARA JOSEPH E ,  SANVILLE W WOODWARD

IPC: B61L1/10 ,  B61K9/06 ,  G01M17/08 ,  G08B21/00

Abstract: SELF ADJUSTING WHEEL BEARING HEAT SIGNAL PROCESSING CIRCUIT 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.

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.

公开(公告)号：SE8304348D0

公开(公告)日：1983-08-10

申请号：SE8304348

申请日：1983-08-10

Applicant: SERVO CORP OF AMERICA

Inventor： GLAZAR A J ,  VILLAR L F

IPC: G01V8/14 ,  G01B11/27

公开(公告)号：GB8311304D0

公开(公告)日：1983-06-02

申请号：GB8311304

申请日：1983-04-26

Applicant: SERVO CORP OF AMERICA

IPC: G01V8/14 ,  G01B11/27 ,  G01J1/04

公开(公告)号：AU8880082A

公开(公告)日：1983-04-14

申请号：AU8880082

申请日：1982-09-28

Applicant: SERVO CORP OF AMERICA

Inventor： GALLAGHER CORNELIUS A

IPC: G01M13/04 ,  B61K9/00 ,  B61K9/06 ,  G01J5/00 ,  G01M17/08

Abstract: A hot box detector system is provided in which an infra-red scanner (16) is arranged to scan the wheel bearings of railway rolling stock passing over a section of track (10) and to generate signals which are processed to determine the temperature of the bearing, the nature of the bearing, and, for signals derived from bearings within a closed housing (24, 26), to determine if the scanned surface of the housing is an inner sidewall (32, 34) or an outer sidewall (36, 38) of the housing (24, 26) relative to the bogie (22) to which the bearing belongs. Train speed is also determined from wheel detectors 12, 14. The signals are then normalised to account for differences in the heat dissipating characteristics of the inner outer sidewalls, and the air stream cooling resulting from the movement of the train before being analyzed to determined whether or not the bearing is overheated.

公开(公告)号：DE3136925A1

公开(公告)日：1982-06-24

申请号：DE3136925

申请日：1981-09-17

Applicant: SERVO CORP OF AMERICA

Inventor： BAMBERA JOSEPH E

IPC: B61L25/04 ,  H04N7/18 ,  G06K9/20 ,  G07C11/00 ,  B61L25/02

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.

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.

公开(公告)号：GB2072836A

公开(公告)日：1981-10-07

申请号：GB8104005

申请日：1981-02-10

Applicant: SERVO CORP OF AMERICA

IPC: A61B17/70 ,  B61K9/00 ,  A61B17/86 ,  A61B19/00 ,  A61F2/00 ,  A61F2/30 ,  A61F2/44 ,  B61K9/06 ,  B61L1/10 ,  G01J5/10

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.

公开(公告)号：BR8101789A

公开(公告)日：1981-10-06

申请号：BR8101789

申请日：1981-03-26

Applicant: SERVO CORP OF AMERICA

Inventor： SANVILLE W ,  BAMBARA J

IPC: B61K9/00 ,  A61B17/70 ,  A61B17/86 ,  A61B19/00 ,  A61F2/00 ,  A61F2/30 ,  A61F2/44 ,  B61K9/06 ,  B61L1/10 ,  B61K9/04 ,  B61L3/00 ,  B61F15/12

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.

公开(公告)号：SE392849B

公开(公告)日：1977-04-25

申请号：SE7307997

申请日：1973-06-06

Applicant: SERVO CORP OF AMERICA

Inventor： GALLAGHER C A

IPC: B61K9/12 ,  B61K9/06 ,  B61K13/00 ,  G01J5/00 ,  B61K9/04

Abstract: A railway safety system is provided to detect defects on railroad rolling stock, such as sticking brakes, which are ultimately manifested by an abnormal temperature rise in the region of the railway car wheel rim. The system utilizes an infrared detector positioned along a section track and focused to scan the wheels of passing cars. Scanning is confined to an area of each wheel between the rail head and the bottom of the car brake shoes.