Title :
Applications of Thermoresistive Sensors Using the Electric Equivalence Principle
Author :
Freire, Raimundo Carlos Silvério ; Catunda, Sebastian Yuri Cavalcanti ; Luciano, Benedito Antonio
Author_Institution :
Dept. of Electr. Eng., Fed. Univ. of Campina Grande, Campina Grande
fDate :
6/1/2009 12:00:00 AM
Abstract :
In this paper, a survey on the characteristics of thermoresistive sensors [positive temperature coefficient (PTC) and negative temperature coefficient (NTC)] and their applications to measurement structures that use the electric equivalence principle, in special radiometers and anemometers, is presented. The dynamic responses of the architectures and the influence of the operational amplifier offset voltage on the instrument performance are discussed. Alternative architectures employing pulsewidth modulation (PWM) and sigma-delta analog-to-digital (A/D) converters are also shown.
Keywords :
anemometers; electric sensing devices; operational amplifiers; radiometers; sigma-delta modulation; temperature measurement; temperature sensors; PWM; anemometer; electric equivalence principle; operational amplifier offset voltage; pulsewidth modulation; radiometer; sigma-delta analog-to-digital converter; thermoresistive sensor; Anemometer; electric equivalence principle; offset voltage; radiometer; thermoresistive sensors;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2009.2013659
