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Design and implementation of measurement system for milk fat content based on optical fiber sensor

ZHANG LIN1, ZHAO ZHIMIN1,* , ZHU XINGYUE1, JI LEI1, SHEN LINGBIN1, JI RENDONG1, CHEN YUMING1

Affiliation

  1. College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing China, 210016

Abstract

The aim of this paper is to design an optical fiber sensing system for determination of fat content in milk. The measurement system is composed of light source, Y type optical fiber, photodetector, thermoelectric cooler (TEC), pre amplifier, second level amplifier, A/D converter, microprocessor, data storage module, data display and key module. According to Mie light scattering theory, absorbency is adopted as the optical parameter representing the milk fat content; Homogenization is realized by TEC to ensure that the scattering coefficient keeps invariant; Based on the standard model of the system established beforehand, the processor can calculate the fat content in milk. Through calibration and prediction, we can choose the best testing temperature. Results of this study indicate the feasibility and real time performance of using this measurement system for milk fat analysis..

Keywords

Fat content Y type optical fiber EDTA Data modeling.

Submitted at: Feb. 2, 2013
Accepted at: July 10, 2014

Citation

ZHANG LIN, ZHAO ZHIMIN, ZHU XINGYUE, JI LEI, SHEN LINGBIN, JI RENDONG, CHEN YUMING, Design and implementation of measurement system for milk fat content based on optical fiber sensor, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 7-8, pp. 990-999 (2014)