Signal circuit and cold junction compensation of fiber-optic thermocouple sensor

Author

Xiong Wan ; Zhang Yuan ; Zhimin Zhang

Author_Institution

Inst. of Test & Photoelectric Eng., Nanchang Hangkong Univ., Nanchang, China

fYear

2013

fDate

20-22 Dec. 2013

Firstpage

560

Lastpage

564

Abstract

A fiber-optic thermocouple sensor is proposed in this paper, which is composed of a number of optical fiber and thermocouple sensor. A signal processing circuit of the fiber-optic thermocouple sensor is designed and a cold junction compensation method is also introduced. This paper focuses on analyzing optical fiber sensor signals and the cold junction compensation method in the case of multi-channel temperature measurements. The cold junction compensation method is based on the Newton iterative algorithm, which is embedded in a microprocessor. An experiment of temperature measurement is fulfilled and hence testifies the feasibility of the proposed fiber-optic thermocouple sensor and its cold junction compensation method.

Keywords

Newton method; compensation; fibre optic sensors; microprocessor chips; signal processing equipment; temperature measurement; temperature sensors; thermocouples; Newton iterative algorithm; cold junction compensation method; fiber-optic thermocouple sensor; microprocessor; multichannel temperature measurement; signal processing circuit; Frequency measurement; Integrated circuit modeling; Junctions; Optical fiber testing; Temperature measurement; cold junction compensation; fiber-optic thermocouple sensor; newton iterative algorithm; signal processing circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronic Sciences, Electric Engineering and Computer (MEC), Proceedings 2013 International Conference on

Conference_Location

Shengyang

Print_ISBN

978-1-4799-2564-3

Type

conf

DOI

10.1109/MEC.2013.6885127

Filename

6885127