Marine in-situ spectrophotometric measurement system

Author

Jiyuan Zhang ; Ye Shuming

Author_Institution

Coll. of Biomed. Eng. & Instrum. Sci., Zhejiang Univ., Hangzhou, China

fYear

2014

fDate

8-9 May 2014

Firstpage

890

Lastpage

893

Abstract

A new system for marine in-situ spectrophotometric measurement system is described. An improved solution is provided to overcome the weakness of current spectrophotometric detection system. LEDs are chosen as light source and photodiodes and demodulating circuit as precision optical detector. Combined with micro-flow Pump and valve as well as small-volume flow cell, it is reducing system noise, power and reagent consumption. pH and CO2 measurement and experiment is designed to verify the performance of system. The results show that the system noise is less than 0.005 and during an operating cycle. Its power consumption is less than 90mWh. Its reagent consumption is only 0.75mL. Thus it can satisfy the request of in-situ detection.

Keywords

oceanographic techniques; carbon dioxide measurement; demodulating circuit; light source; marine in-situ spectrophotometric measurement system; microflow pump; microflow valve; optical detector; pH measurement; photodiodes; reagent consumption; small-volume flow cell; spectrophotometric detection system; system noise reduction; Current measurement; Fluid flow measurement; Optical modulation; Optical pumping; Optical reflection; Optical variables measurement; Sea measurements; CO2; in-situ; pH; spectrophotometry;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Computer and Applications, 2014 IEEE Workshop on

Conference_Location

Ottawa, ON

Type

conf

DOI

10.1109/IWECA.2014.6845764

Filename

6845764