Title :
Signal characterization of a pulsed-wire and heat flow system at a flow sensor
Author :
Ecin, O. ; Viga, R. ; Hosticka, B.J. ; Grabmaier, A.
Author_Institution :
Electron. Components & Circuits, Univ. Duisburg-Essen, Duisburg, Germany
Abstract :
This article describes a pulsed thermal Time-of-Flight (TTOF) flow sensor system as two subsystems i.e., a pulsed-wire system and a heat flow system. The entire flow sensor is regarded system-theoretically as a linear time-invariant (LTI) system and is described by its transfer function or impulse response. The characterization of the thermo-fluid dynamic signals obtained by a pulsed-wire and by a heat flow is strived. Hence, the impulse response of both pulsed-wire and heat flow is analyzed according to the flow velocity. Experimental and theoretical results are compared in a flow velocity range in air between 0.1 m/s and 1.4 m/s.
Keywords :
flow sensors; transfer functions; transient response; LTI system; flow velocity; heat flow system; impulse response; linear time-invariant system; pulsed thermal TTOF flow sensor system; pulsed thermal time-of-flight flow sensor system; pulsed-wire system; signal characterization; thermo-fluid dynamic signals; transfer function; Equations; Filtering theory; Fluids; Heat transfer; Heating; Mathematical model; Wires; LTI-system; TTOF; flow sensor system; low-pass filter; thermo-fluid dynamic impulse response;
Conference_Titel :
Circuit Theory and Design (ECCTD), 2011 20th European Conference on
Conference_Location :
Linkoping
Print_ISBN :
978-1-4577-0617-2
Electronic_ISBN :
978-1-4577-0616-5
DOI :
10.1109/ECCTD.2011.6043374
