Title :
A virtual instrument for measurement of expiratory parameters
Author :
Kandaswamy, A. ; Kumar, C. Sathish ; Kiran, T. Vamsee
Author_Institution :
Dept. of Electron. & Commun. Eng., PSG Coll. of Technol., Coimbatore, India
fDate :
6/24/1905 12:00:00 AM
Abstract :
Measurement of expiratory parameters provide useful information about overall respiratory system that can be fundamental in categorizing and staging pulmonary diseases. In contrast to the conventional stand-alone instrument, a PC based virtual instrument for the measurement of expiratory parameters has been proposed in this paper. A flow sensor based on the principle of constant temperature hot-wire anemometry has been developed to measure the airflow through the mouth of the subject during expiration. Output signal of the anemometer is connected to a PC through an analog to digital interface card, PCI 6025E from National Instruments. A virtual instrument with all controls, indicators and display required for the measurement and interpretation of expiratory parameters has been developed using the software package LabVIEW.
Keywords :
anemometry; biomedical measurement; biosensors; flow measurement; medical diagnostic computing; pneumodynamics; virtual instrumentation; LabVIEW software package; PCI6025E analog-to-digital interface card; airflow measurement; expiratory parameters; flow sensor; hot-wire anemometry; personal computer; pulmonary disease; respiratory system; virtual instrument; Biomedical measurements; Bridge circuits; Educational institutions; Electrical resistance measurement; Fluid flow measurement; Instruments; Resistors; Respiratory system; Temperature sensors; Wire;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2002. IMTC/2002. Proceedings of the 19th IEEE
Print_ISBN :
0-7803-7218-2
DOI :
10.1109/IMTC.2002.1007137
