Signal conditioning for differential temperature measurement with thermistors using a generalized impedance converter

Enrique Castro Montero; Diego Ramírez Muñoz; Jaime Sánchez Moreno; Julio Fong Barrio; Arquimides Salazar Mustelier

doi:10.1063/1.2778621

Signal conditioning for differential temperature measurement with thermistors using a generalized impedance converter

Rev Sci Instrum. 2007 Aug;78(8):086114. doi: 10.1063/1.2778621.

Authors

Enrique Castro Montero¹, Diego Ramírez Muñoz, Jaime Sánchez Moreno, Julio Fong Barrio, Arquimides Salazar Mustelier

Affiliation

¹ Electrical Engineering Faculty, University of Oriente, Santiago de Cuba, Cuba.

PMID: 17764374
DOI: 10.1063/1.2778621

Abstract

In this article a differential temperature-to-time converter is presented using two thermistors in a generalized impedance converter, polarized in direct current. The voltage drop in one of the thermistors depends on the differential temperature at which both thermistors are exposed. Such voltage drop is compared to a signal which changes exponentially by obtaining a time interval which depends on the differential temperature. The results of the experimental tests support the theoretical analysis performed and at the same time offer a new possibility of application of the generalized impedance converter as a signal conditioning circuit.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Amplifiers, Electronic*
Electric Impedance
Equipment Design
Equipment Failure Analysis
Reproducibility of Results
Sensitivity and Specificity
Thermography / instrumentation*
Thermography / methods
Transducers*