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Title: 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:
 [1];  [2]
  1. (Alcoa, TN)
  2. (Knoxville, TN)
Issue Date:
Research Org.:
LOCKHEED MARTIN ENERGY RES COR
OSTI Identifier:
872111
Patent Number(s):
5862170
Assignee:
Lockheed Martin Energy Research Corporation (Oak Ridge, TN) ORNL
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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