Fabrication and evaluation of a notched polymer optical fiber fabric strain sensor and its application in human respiration monitoring

Wei Zheng, Xiaoming Tao, bo Zhu, Guangfeng Wang, Chiyuen Hui

Research output: Journal article publicationJournal articleAcademic researchpeer-review

26 Citations (Scopus)

Abstract

This paper describes an intensity-based notched polymer optical fiber (POF) fabric strain sensor and its application in human respiration monitoring. A mechanical analysis illustrates geometrical profiles of constrained fiber loops on the fabric substrate. V-shaped notches are made by laser ablation on the sides of the POFs. The effects of loop parameters and processing conditions on the sensing performance are investigated. The experimental results show that the fabric sensor is more sensitive to strain with notches on the outer side of the loops, a small radius of the loops and a low scanning speed of laser. This fabric sensor exhibits a large measurable strain range of up to 21%. The achieved strain sensitivity is 3.77. The temperature and relative humidity have little effect on strain sensitivity between 0℃ and 60℃. A belt has been fabricated by integrating the fabric sensor for monitoring human respiration. The evaluation trials show a strong correlation between the belt system and a clinic monitor.
Original languageEnglish
Pages (from-to)1791-1802
Number of pages12
JournalTextile Research Journal
Volume84
Issue number17
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • fabric sensor
  • human respiration
  • large strain
  • polymer optical fiber

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics

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