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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. 5 figs.

Inventors:
;
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
321281
Patent Number(s):
5862170
Application Number:
PAN: 8-744,357
Assignee:
Lockheed Martin Energy Research Corp., Oak Ridge, TN (United States)
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 19 Jan 1999
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; TEMPERATURE MEASUREMENT; ENERGY EFFICIENCY; ENERGY CONSERVATION; CAPITALIZED COST; ACCURACY

Citation Formats

Britton, Jr, C L, and Ericson, M N. Temperature measurement method using temperature coefficient timing for resistive or capacitive sensors. United States: N. p., 1999. Web.
Britton, Jr, C L, & Ericson, M N. Temperature measurement method using temperature coefficient timing for resistive or capacitive sensors. United States.
Britton, Jr, C L, and Ericson, M N. Tue . "Temperature measurement method using temperature coefficient timing for resistive or capacitive sensors". United States.
@article{osti_321281,
title = {Temperature measurement method using temperature coefficient timing for resistive or capacitive sensors},
author = {Britton, Jr, C L and Ericson, M N},
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. 5 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}