Browsing by Author "Ou-Yang, M"

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Design and analysis of electrically calibrated tympanic thermometers
(1998-05-01)
Ou-Yang, M
;
Shie, JS
;
Tsao, C
;
光電工程學系
;
Department of Photonics
A new tympanic thermometer is analyzed and tested experimentally. An electrically calibrated pyroelectric detector of special configuration is employed to determine a person's body temperature. An energy-storage, power-supply-isolated capacitor is used as the electrical heating reference. The new thermometer design has an accuracy within +/-0.1 degrees C with a 90% confidence and is immune to ambient temperature, detector aging, and parameter variations. An equivalent-circuit model is established in the analysis to account for the heat exchanges among the tympanum, the surroundings, and the detector as well as for the electrothermal behavior of the detector. The model provides effective simulation of the thermometer with PSPICE. Critical parameters governing the accuracy and the Limitation of the tympanic thermometer are also pointed out by the simulation. (C) 1998 Optical Society of America.
Fabrication of InGaN multi-quantum-well nanorod by Ni nano-mask
(2004)
Huang, HW
;
Hsueh, TH
;
Kao, CC
;
Chang, YH
;
Ou-Yang, M
Parameter extraction of resistive thermal microsensors by AC electrical method
(1998-04-01)
Ou-Yang, M
;
Sheen, CS
;
Shie, JS
;
光電工程學系
;
Department of Photonics
Obtaining device parameters of thermal microsensors is essential for evaluating their performances and simulation modeling. We report an sc electrical method for extracting these parameters experimentally with relatively simple instrumentation. The basic parameters of resistive microsensors, the resistance, temperature coefficient of resistance, thermal capacitance, and conductance, are derivable from the second harmonic signal of the output voltage induced by a sinusoidal driving current. The results are compared with other methods.