Optimisation of the range of an optical fibre pH sensor using feed-forward artificial neural network

Faiz Bukhari Mohd Suah, Musa Ahmad, Mohd Nasir Taib

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

A broad range of optical fibre pH sensor based on immobilised bromophenol blue (BPB) immobilised on hydrophobic organic polymers Amberlite XAD 7 is presented in this paper. The reflectance spectra of the immobilised bromophenol blue were measured by using an optical fibre spectrophotometer. A back-propagation (BP) artificial neural network (ANN) model was used to analyse the optode response. The results showed that the use of ANN technique was very effective in broadening the limited dynamic response of the pH sensor (pH 2.00-5.00) to an extensive calibration response (pH 2.00-12.00). A network with 11 neurons in the hidden layer was tremendously accurate in predicting the response of the optical fibre pH sensor with an average error 0.02 pH for measuring unidentified buffer solution.

Original languageEnglish
Pages (from-to)175-181
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume90
Issue number1-3
DOIs
Publication statusPublished - 20 Apr 2003

Fingerprint

pH sensors
Bromphenol Blue
Optical fibers
optical fibers
Neural networks
optimization
sensors
Organic polymers
Spectrophotometers
Backpropagation
Neurons
Dynamic response
Buffers
Amberlite (trademark)
Calibration
spectrophotometers
dynamic response
neurons
buffers
reflectance

Keywords

  • Amberlite XAD 7
  • Artificial neural network
  • Back-propagation algorithm
  • Bromophenol blue
  • Optical fibre pH sensor

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

Cite this

Optimisation of the range of an optical fibre pH sensor using feed-forward artificial neural network. / Suah, Faiz Bukhari Mohd; Ahmad, Musa; Taib, Mohd Nasir.

In: Sensors and Actuators, B: Chemical, Vol. 90, No. 1-3, 20.04.2003, p. 175-181.

Research output: Contribution to journalArticle

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