System for monitoring the temperature of wheel bearings in railroad cars
First Claim
1. A system for detection of overheating in wheel bearings of vehicles having a plurality of bearings comprising temperature sensors situated in close proximity of said plurality of wheel bearings, said temperature sensors responding to the temperature in said bearings and generating electrical signals representative of said temperature, means for processing said signals, and for generating alarm signals identifying overheated one or more of said bearings when the temperature of one or more of said plurality of bearings as compared to the averaged temperature representing signals from other of said plurality bearings of the same vehicle exceeds a preset value, and means responsive to said alarm signals for identifying the location of the bearings responsible for said signals exceeding preset value.
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Abstract
A system is described for automatic detection of overheated wheel bearings of railroad cars and carriages. Signals representing the temperature of such bearings are generated by temperature sensors that are installed in close proximity of the wheel bearings. The signals are amplified, digitized and, to prevent false indications, averaged for each individual bearing. The averaged signals from each bearing are than compared to the averaged signals from the other three bearings of the same car or vehicle. If the signal from any bearing deviates by a present magnitude value, an alarm signal is generated and transmitted to a central monitoring location. The signals from each bearing are uniquely identified by a code. Light emitting diodes are installed close to the bearings and light up to indicate overheating. The electric power for the system is generated by an electromagnetic generator, which responds to the vibrations of the moving car.
36 Citations
13 Claims
- 1. A system for detection of overheating in wheel bearings of vehicles having a plurality of bearings comprising temperature sensors situated in close proximity of said plurality of wheel bearings, said temperature sensors responding to the temperature in said bearings and generating electrical signals representative of said temperature, means for processing said signals, and for generating alarm signals identifying overheated one or more of said bearings when the temperature of one or more of said plurality of bearings as compared to the averaged temperature representing signals from other of said plurality bearings of the same vehicle exceeds a preset value, and means responsive to said alarm signals for identifying the location of the bearings responsible for said signals exceeding preset value.
- 9. A system for detection of overheating in wheel bearings in a railroad car or other vehicle having a plurality of wheel bearings comprising individual temperature-sensing modules situated in close proximity of each of said wheel bearings, said temperature-sensing modules responding to the temperatures of said bearings and generating electrical signals representative of said temperatures, called temperature responsive signals hereinafter TRS, means for processing said TRS and for generating alarm signals when the TRS for one or more of said plurality of bearings exceeds a preset value as compared to the TRS from the other of said plurality of bearings thereby providing data identifying overheating one of said plurality of bearings and their location and for display or transmission.
Specification