Next Article in Journal
Performance of an Ultrasonic Ranging Sensor in Apple Tree Canopies
Previous Article in Journal
Modeling of Nonlinear Aggregation for Information Fusion Systems with Outliers Based on the Choquet Integral
Article Menu

Export Article

Open AccessArticle
Sensors 2011, 11(3), 2447-2458; doi:10.3390/s110302447

A Non-Invasive Thermal Drift Compensation Technique Applied to a Spin-Valve Magnetoresistive Current Sensor

1
Department of Electronic Engineering, University of Valencia, C/ Doctor Moliner, 50, 46100-Burjassot, Spain
2
Instituto de Sistemas e Computadores—Microsistemas e Nanotecnologias (INESC-MN) and Institute for Nanosciences and Nanotechnologies, R. Alves Redol 9, 1000-029 Lisbon, Portugal
*
Author to whom correspondence should be addressed.
Received: 10 January 2011 / Revised: 10 February 2011 / Accepted: 11 February 2011 / Published: 25 February 2011
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [516 KB, uploaded 21 June 2014]   |  

Abstract

A compensation method for the sensitivity drift of a magnetoresistive (MR) Wheatstone bridge current sensor is proposed. The technique was carried out by placing a ruthenium temperature sensor and the MR sensor to be compensated inside a generalized impedance converter circuit (GIC). No internal modification of the sensor bridge arms is required so that the circuit is capable of compensating practical industrial sensors. The method is based on the temperature modulation of the current supplied to the bridge, which improves previous solutions based on constant current compensation. Experimental results are shown using a microfabricated spin-valve MR current sensor. The temperature compensation has been solved in the interval from 0 °C to 70 °C measuring currents from −10 A to +10 A. View Full-Text
Keywords: electrical current measurement; magnetoresistance sensor; spin-valve sensor; temperature compensation electrical current measurement; magnetoresistance sensor; spin-valve sensor; temperature compensation
Figures

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Sánchez Moreno, J.; Ramírez Muñoz, D.; Cardoso, S.; Casans Berga, S.; Navarro Antón, A.E.; Peixeiro de Freitas, P.J. A Non-Invasive Thermal Drift Compensation Technique Applied to a Spin-Valve Magnetoresistive Current Sensor. Sensors 2011, 11, 2447-2458.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top