Positive temperature coefficient resistor heater assembly health monitoring

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United States of America Patent

PATENT NO 11913977
APP PUB NO 20220365115A1
SERIAL NO

17322251

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A system for determining a health status of a positive temperature coefficient resistor (PTCR) heater assembly includes a PTCR heater assembly and a health monitoring system. An input voltage is provided to the PTCR heater assembly to provide heating. The health monitoring system includes a first sensor configured to sense the input voltage at the PTCR heater assembly and a second sensor configured to sense a current through the PTCR heater assembly. The health monitoring system is configured to determine a baseline characteristic and an observed characteristic each relating to an inrush peak of the PTCR heater assembly and based on the input voltage and the current. The health monitoring system compares the observed characteristic to the baseline characteristic to assess a health status of the PTCR heater assembly and outputs the health status for PTCR heater assembly diagnostics and/or prognostics.

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Patent Owner(s)

  • ROSEMOUNT AEROSPACE INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jenkins, Alexandra C Prior Lake, US 2 1
Schwartz, Richard Alan Faribault, US 19 67
Valdes, Chavez Armando Lakeville, US 3 0

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