Monolithically compatible impedance measurement
Abstract
A monolithic sensor includes a reference channel and at least one sensing channel. Each sensing channel has an oscillator and a counter driven by the oscillator. The reference channel and the at least one sensing channel being formed integrally with a substrate and intimately nested with one another on the substrate. Thus, the oscillator and the counter have matched component values and temperature coefficients. A frequency determining component of the sensing oscillator is formed integrally with the substrate and has an impedance parameter which varies with an environmental parameter to be measured by the sensor. A gating control is responsive to an output signal generated by the reference channel, for terminating counting in the at least one sensing channel at an output count, whereby the output count is indicative of the environmental parameter, and successive ones of the output counts are indicative of changes in the environmental parameter.
- Inventors:
-
- Knoxville, TN
- Oak Ridge, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 874765
- Patent Number(s):
- 6456096
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- AC05-96OR22464
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- monolithically; compatible; impedance; measurement; monolithic; sensor; reference; channel; sensing; oscillator; counter; driven; formed; integrally; substrate; intimately; nested; matched; component; values; temperature; coefficients; frequency; determining; parameter; varies; environmental; measured; gating; control; responsive; output; signal; generated; terminating; counting; count; indicative; successive; ones; counts; changes; output signal; temperature coefficient; /324/257/
Citation Formats
Ericson, Milton Nance, and Holcomb, David Eugene. Monolithically compatible impedance measurement. United States: N. p., 2002.
Web.
Ericson, Milton Nance, & Holcomb, David Eugene. Monolithically compatible impedance measurement. United States.
Ericson, Milton Nance, and Holcomb, David Eugene. Tue .
"Monolithically compatible impedance measurement". United States. https://www.osti.gov/servlets/purl/874765.
@article{osti_874765,
title = {Monolithically compatible impedance measurement},
author = {Ericson, Milton Nance and Holcomb, David Eugene},
abstractNote = {A monolithic sensor includes a reference channel and at least one sensing channel. Each sensing channel has an oscillator and a counter driven by the oscillator. The reference channel and the at least one sensing channel being formed integrally with a substrate and intimately nested with one another on the substrate. Thus, the oscillator and the counter have matched component values and temperature coefficients. A frequency determining component of the sensing oscillator is formed integrally with the substrate and has an impedance parameter which varies with an environmental parameter to be measured by the sensor. A gating control is responsive to an output signal generated by the reference channel, for terminating counting in the at least one sensing channel at an output count, whereby the output count is indicative of the environmental parameter, and successive ones of the output counts are indicative of changes in the environmental parameter.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}
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