DocumentCode :
39155
Title :
All Silk-Screen Printed Polymer-Based Remotely Readable Temperature Sensor
Author :
Voutilainen, Juha-Veikko ; Happonen, Tuomas ; Hakkinen, Jukka ; Fabritius, Tapio
Author_Institution :
Optoelectron. & Meas. Tech. Lab., Univ. of Oulu, Oulu, Finland
Volume :
15
Issue :
2
fYear :
2015
fDate :
Feb. 2015
Firstpage :
723
Lastpage :
733
Abstract :
In this paper, we present the fabrication and characterization results of a remotely readable flexible temperature sensor. The sensor has been fabricated with screen printing technology and it consists of a polymer-based capacitor (ASAHI CR18-KTI polymer paste) as a temperature sensitive component added to the antenna coil (ASAHI LS411-AW silver paste) for remote reading purposes. The resonance frequency of the sensor (i.e., the formed LC network) is measured as a function of temperature. The sensor has been characterized in the temperature range of 0 °C-70 °C and the total sensitivity over this range is ~9 kHz/°C. The sensor´s normalized temperature response is independent from the polymer capacitor´s thickness and the effective capacitor area, which enables reasonable performance despite fabrication process induced inaccuracies. Due to the inexact nature of the resonance peak measurement, a dataanalysis algorithm was developed to enhance the accuracy of the measurement method. In addition, the sensor response to the misaligned reader and the sensor self-heating effect, due to the inductive excitation voltage, are considered. Finally, the calibration of such a sensor is discussed.
Keywords :
calibration; capacitors; frequency measurement; polymer films; temperature sensors; thick film sensors; antenna coil; calibration; data analysis algorithm; fabrication process; inductive excitation voltage; polymer-based capacitor; remote reading purposes; resonance frequency measurement; resonance peak measurement; screen printing technology; sensor self-heating effect; silk screen printed polymer-based remotely readable temperature sensor; temperature 0 degC to 70 degC; temperature sensitive component; Capacitors; Polymers; Resonant frequency; Temperature dependence; Temperature measurement; Temperature sensors; Printed electronics; remote reading; self-heating; temperature sensor;
fLanguage :
English
Journal_Title :
Sensors Journal, IEEE
Publisher :
ieee
ISSN :
1530-437X
Type :
jour
DOI :
10.1109/JSEN.2014.2350077
Filename :
6881652
Link To Document :
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