A simple flow measurement system for rotameters using webcam

Research output: Chapter in Book/Report/Conference proceedingChapter


In this work, we report of a noncontact level measurement based on machine vision techniques. Data has been acquired with a high-definition webcam @ 30 frames per second. Image-processing algorithms have been developed and optimized using LabVIEW. The measurement may then automate a servo actuated hand-valve. On testing, the system was found to be linear, repeatable, and accurate to ±0.5% of the measured value for 50 measurements carried out. In the scheme are proposed hereof, the levels may just be remotely observed on a LabVIEW SCADA panel and used as a set point to a regulatory control-actuator system. The system is rugged and can be calibrated to 0.05% precision for all rotameter types used in any environment from a simple DM plant to a petrochemical industry for a fixed camera distance.

Original languageEnglish
Title of host publicationLecture Notes in Networks and Systems
PublisherSpringer Paris
Number of pages6
Publication statusPublished - 01-01-2018

Publication series

NameLecture Notes in Networks and Systems
ISSN (Print)2367-3370
ISSN (Electronic)2367-3389

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Signal Processing
  • Control and Systems Engineering


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