Title :
An FPGA based Measurement System for a Fibre Bragg Grating (FBG) Strain Sensor
Author :
Uzenkov, Oleg ; Lee, Peter ; Webb, D.
Author_Institution :
Dept. of Electron., Kent Univ.
Abstract :
This paper presents an FPGA based measurement system used to measure the output from a fibre based Bragg grating strain sensor. The system is able to monitor the output of up to 10 demultiplexed light sources generated by the Bragg grating sensor and separated using a miniaturised monochromator. The centroid (C) of the light sources are measured using a 2048 pixel linear CCD array controlled by a Xilinx FPGA. The system scans the linear array at a rate of 2 MHz and is able to obtain sub-pixel resolution which equates resolution of 1 microstrain. The control circuit is implemented using less than 58% of the logic resources on an XCS40 device
Keywords :
Bragg gratings; charge-coupled devices; computerised instrumentation; fibre optic sensors; field programmable gate arrays; light sources; measurement systems; monochromators; strain sensors; 2 MHz; XCS40; Xilinx FPGA; demultiplexed light sources; fibre Bragg grating; field programmable gate arrays; linear CCD array; measurement system; miniaturised monochromator; strain sensor; Bragg gratings; Capacitive sensors; Charge coupled devices; Fiber gratings; Field programmable gate arrays; Light sources; Monitoring; Optical fiber sensors; Sensor systems; Strain measurement; Bragg Grating; FPGA; Strain Sensor;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Conference_Location :
Sorrento
Print_ISBN :
0-7803-9359-7
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2006.328621
