Development of a Chemiluminescence Detecting System Based on FPGA

Ang Wu; Juan Hua Zhu

doi:10.4028/www.scientific.net/KEM.667.391

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 667Development of a Chemiluminescence Detecting...

Development of a Chemiluminescence Detecting System Based on FPGA

Abstract:

In order to detect weak chemiluminescence signal rapidly and high accurately, a chemiluminescence detection system is designed based on the core chip FPGA. The system uses a static injection mechanism as chemiluminescence reaction conduit. High-performance photodiode converts chemiluminescence signals into electrical signals replacing the traditional photomultiplier tube. It can meet the test requirements while reducing the cost of the detection system. The signal processing and storage system FPGA-based consists of A/D converter module, serial communication module, the keyboard scan control modules and memory modules. Nitrite ions in water samples are detected and the results show that in a certain concentration range the calibration curve of NO_2- concentration and luminescence intensity is linear, the linear regression equation is Y = 0.4148X + 2.6508, and the correlation coefficient is R² = 0.9832. The relative standard deviation values are 2.7%(n=11).

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Periodical:

Key Engineering Materials (Volume 667)

Pages:

391-395

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.667.391

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Online since:

October 2015

Authors:

Ang Wu, Juan Hua Zhu

Keywords:

Chemiluminescence, FPGA, Nitrite Ion, Static-Injection

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