Repository of University of Nova Gorica

Show document
A+ | A- | Help | SLO | ENG

Title:Development of prototype of electronic speckle interferometry based spirometer
Authors:ID Swapna, Mohanachandran Nair Sindhu, UNIVERSITY OF KERALA (Author)
ID ARUN, KUMAR, UNIVERSITY OF KERALA (Author)
ID SUNIL, KUMAR, UNIVERSITY OF KERALA (Author)
ID S, SREEJYOTHI, UNIVERSITY OF KERALA (Author)
ID VIMAL, RAJ, UNIVERSITY OF KERALA (Author)
ID SANKARANARAYANA IYER, SANKARARAMAN (Author)
Files: This document has no files that are freely available to the public. This document may have a physical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Language:English
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:The paper reports the design, construction, and calibration of the prototype of a spirometer based on electronic speckle interferometry (ESPI). The conventional ESPI setup is modified by incorporating a DNM (Diaphragm-Nozzle-Mouthpiece) module comprising a metallic diaphragm, regulated airflow channel, and a mouthpiece. The exhaled air after a deep breathe is channelled to the DNM module where the diaphragm gets deformed. From the circular fringe pattern obtained by subtracting the speckled images before and after deformation of the metallic diaphragm, the radius of curvature (R) due to deformation is calculated using the principle of Newton’s rings. The value of R and peak expiratory flow rate (PEFR) from the standard spirometer reading are correlated. From the 640 observations spread over the range 100 - 500 L/min in the standard spirometer, an empirical relation is set in terms of R from the scatter plot. The ESPI spirometer (ESPIS) is validated by determining the value of R corresponding to a particular PEFR from the empirical relation and also from the standard spirometer. The PEFR calculated from ESPIS matches well with the standard spirometer reading, which suggests that the system designed and constructed can be used for biomedical applications for assessing lungs’ efficiency.
Keywords:Speckle, Spirometer, DNM module, ESPIS, Peak expiratory flow rate
Publication version:Version of Record
Year of publishing:2021
Number of pages:6
Numbering:1, 136
PID:20.500.12556/RUNG-7394 New window
COBISS.SI-ID:112986883 New window
DOI:10.1016/j.optlaseng.2020.106318 New window
NUK URN:URN:SI:UNG:REP:JFMQEBKQ
Publication date in RUNG:28.06.2022
Views:1140
Downloads:0
Metadata:XML RDF-CHPDL DC-XML DC-RDF
:
Copy citation
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:Bookmark and Share


Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Record is a part of a journal

Title:Optics and Lasers in Engineering
Publisher:ELSEVIER
Year of publishing:2021
ISSN:0143-8166

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:28.06.2022

Back