Temperature measurement method using temperature coefficient timing for resistive or capacitive sensors
Abstract
A method and apparatus for temperature measurement especially suited for low cost, low power, moderate accuracy implementation. It uses a sensor whose resistance varies in a known manner, either linearly or nonlinearly, with temperature, and produces a digital output which is proportional to the temperature of the sensor. The method is based on performing a zero-crossing time measurement of a step input signal that is double differentiated using two differentiators functioning as respective first and second time constants; one temperature stable, and the other varying with the sensor temperature.
- Inventors:
-
- (Alcoa, TN)
- Knoxville, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 872111
- Patent Number(s):
- 5862170
- Assignee:
- Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01K - MEASURING TEMPERATURE
- DOE Contract Number:
- AC05-96OR22464
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- temperature; measurement; method; coefficient; timing; resistive; capacitive; sensors; apparatus; especially; suited; cost; power; moderate; accuracy; implementation; sensor; resistance; varies; manner; linearly; nonlinearly; produces; digital; output; proportional; based; performing; zero-crossing; time; step; input; signal; double; differentiated; differentiators; functioning; respective; constants; stable; varying; especially suited; temperature coefficient; input signal; time constant; temperature measurement; measurement method; temperature stable; time measurement; temperature measure; /374/307/327/
Citation Formats
Britton, Jr., Charles L., and Ericson, M Nance. Temperature measurement method using temperature coefficient timing for resistive or capacitive sensors. United States: N. p., 1999.
Web.
Britton, Jr., Charles L., & Ericson, M Nance. Temperature measurement method using temperature coefficient timing for resistive or capacitive sensors. United States.
Britton, Jr., Charles L., and Ericson, M Nance. Fri .
"Temperature measurement method using temperature coefficient timing for resistive or capacitive sensors". United States. https://www.osti.gov/servlets/purl/872111.
@article{osti_872111,
title = {Temperature measurement method using temperature coefficient timing for resistive or capacitive sensors},
author = {Britton, Jr., Charles L. and Ericson, M Nance},
abstractNote = {A method and apparatus for temperature measurement especially suited for low cost, low power, moderate accuracy implementation. It uses a sensor whose resistance varies in a known manner, either linearly or nonlinearly, with temperature, and produces a digital output which is proportional to the temperature of the sensor. The method is based on performing a zero-crossing time measurement of a step input signal that is double differentiated using two differentiators functioning as respective first and second time constants; one temperature stable, and the other varying with the sensor temperature.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}
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