A digitalized design of high-precision visibility meter transmitter

To achieve the steady output of the visibility meter probe beam, a high-precision and digitalized visibility meter transmitter based on FPGA has been designed. A bunch of scattered light has been used for the feedback signal of optical power control circuit. In FPGA, the signal entered filtering, RM...

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Bibliographic Details
Published inProceedings 2013 International Conference on Mechatronic Sciences, Electric Engineering and Computer (MEC) pp. 506 - 510
Main Authors Zhao Jing, Xiao Shao-rong
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2013
Subjects
Field programmable gate arrays
FPGA
Optical filters
Optical receivers
Optical sensors
Optical transmitters
PID
PWM
Temperature control
Temperature sensors
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Summary:To achieve the steady output of the visibility meter probe beam, a high-precision and digitalized visibility meter transmitter based on FPGA has been designed. A bunch of scattered light has been used for the feedback signal of optical power control circuit. In FPGA, the signal entered filtering, RMS conversion, amplification and differential module to achieve current dynamic adjustment. In the temperature control unit, the increment digital PID control arithmetic has been adopted and PWM has been used for the output form. The experimental result shows that the system is stable and the fluctuation of transmitter output light intensity is 1.4%.
ISBN:9781479925643
1479925640
DOI:10.1109/MEC.2013.6885119