Articles liés à Universal Voltage Rate Sensor Interface: Obtaining...

Universal Voltage Rate Sensor Interface: Obtaining Time Derivative of Low Frequency signals with improved SNR - Couverture souple

Kruttiventi, Jayanth

 
9783838391663: Universal Voltage Rate Sensor Interface: Obtaining Time Derivative of Low Frequency signals with improved SNR
Couverture souple
ISBN 10 : 3838391667 ISBN 13 : 9783838391663
Editeur : LAP LAMBERT Academic Publishing, 2010

Synopsis

Accurate prediction of heat flux is desired in many transient aerospace and heat treatment applications. This is challenging since the heat flux?temperature integral relationship implicitly requires the time derivative of experimentally obtained temperature data. Noise in the temperature data causes unbounded numerical derivatives with increasing sampling rate. However, it has theoretically been demonstrated that a stable and accurate heat flux can be predicted using the time derivative of temperature (dT/dt) even in the presence of significant white noise. This motivates this work in developing a voltage?rate sensor interface for low-frequency applications in solid heat conducting bodies. The present concept is to amplitude modulate the voltage data and then differentiate them at a higher frequency. The voltage?rate interface, which is used in conjunction with an existing in situ temperature sensor, can deliver real-time heating rate with improved SNR, which is verified by both simulation and experiments. The SNR is also shown to improve with increasing sampling rate, which is an advantage of this interface.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

Accurate prediction of heat flux is desired in many transient aerospace and heat treatment applications. This is challenging since the heat flux?temperature integral relationship implicitly requires the time derivative of experimentally obtained temperature data. Noise in the temperature data causes unbounded numerical derivatives with increasing sampling rate. However, it has theoretically been demonstrated that a stable and accurate heat flux can be predicted using the time derivative of temperature (dT/dt) even in the presence of significant white noise. This motivates this work in developing a voltage?rate sensor interface for low-frequency applications in solid heat conducting bodies. The present concept is to amplitude modulate the voltage data and then differentiate them at a higher frequency. The voltage?rate interface, which is used in conjunction with an existing in situ temperature sensor, can deliver real-time heating rate with improved SNR, which is verified by both simulation and experiments. The SNR is also shown to improve with increasing sampling rate, which is an advantage of this interface.

Biographie de l'auteur

Jayanth Kruttiventi is currently working as an applications engineer at Texas Instruments. He had completed his Masters with specialization in analog VLSI from University of Tennessee Knoxville in 2008 and under graduation from JNTU university in India. His areas of interests include analog and mixed signal applications.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2010
Langue
anglais
ISBN 10 
3838391667
ISBN 13 
9783838391663
Reliure
Broché
Nombre de pages
104
Coordonnées du fabricant
non disponible
Personne responsable
KreGa Onlinehandel GmbH
4950000000000
info@krega-onlinehandel.de

Birkenweg 31
Brakel
33034
Allemagne