System and method of monitoring the peak temperature of a moving mass
AssigneeJohns Manville
InventorJames Alfred Schairer
Life of this patent
Estimating the term…
Abstract
Monitoring the peak temperature of a moving mass, such as a flowing stream of molten material, has in the past been plaqued with problems. The present system and method overcomes these problems by oscillating a temperature sensor, spaced from the moving mass, such that the sensor scans back and forth across the moving mass during each cycle of oscillation. The output signal from the sensor is fed to device that preferably puts out a signal proportional to the peak temperature sensed by the sensor on each half cycle of oscillation, which output signal is caused to decay at a desired rate between peak temperature measurements. This slightly sawtooth shaped output signal can be recorded and/or used for control purposes.
Claims7
A system for monitoring the peak temperature of a mass moving past a given area wherein the peak temperature changes location within the confines of the mass and of said area, comprising:
- a. means for sensing the temperature of a portion of said mass which portion is located adjacent to a segment of said area, said sensing means being spaced from said mass and capable of emitting a first signal having a magnitude representative of the temperature of said mass at said portion, said first signal comprising peaks and valleys and magnitude differences therebetween,
- b. means for oscillating said sensing means and thereby scanning said moving mass such that on each half cycle of oscillation said sensing means scans the peak temperature of the moving mass,
- c. means for receiving said first signal and for generating a second signal that relates to at least the peak magnitude of that portion of said first signal received during each half cycle of oscillation, said receiving and generating means also having means for decaying the magnitude of said second signal at a desired rate between the times that the peak temperatures are sensed in sequential half cycles of oscillation by the sensing means, said second signal having peaks and valleys and magnitude differences therebetween, the magnitude differences of said second signal being much smaller than the corresponding magnitude differences of said first signal.
A method for monitoring the peak temperature of a mass moving past a given area wherein the peak temperature changes locations within the confines of said mass and adjacent to said area, comprising
- a. placing a temperature sensing means spaced from said moving mass and oscillating said temperature sensing means such that a segment of said area viewed by said temperature sensing means is moved back and forth across the confines of said area which area extends beyond the confines of said moving mass,
- b. feeding a first signal coming from said sensing means, which signal comprising a series of peaks and valleys with magnitude differences therebetween, into a means for generating a second signal that relates to at least a peak magnitude of that portion of said first signal received during each half cycle of oscillation, and decaying the magnitude of said second signal at a predetermined rate between the times that the peak temperatures are sensed in sequential half cycles of oscillation by the sensing means thereby providing a second signal having peaks and valleys and magnitude differences therebetween, the magnitude differences of the second signal being much smaller than the corresponding magnitude differences of the first signal.
Dependencies are inferred from the claim text.