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Design of Demodulation System of Interferometric Sensor Based on Labview |
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| Authors: | XU Wei WANG Jin-hai CHEN Cai-he ZHENG Yu ZHANG Cheng |
| Affiliation: | [1]College of Information and Communication Engineering, Tianjin Polytechnic University,Tianjin 300160, CHN [2]College of Precision Instrument and Optic-electronics Engineering, Key Laboratory of Optic-electronics Information Technical Science of EMC, Tianjin University, Tianjin 300072, CHN |
| Abstract: | For the modified demodulation arithmetic of 3×3 coupler, the processing software built on the basis of Labview is able to demodulate asymmetric 3×3 coupler signal and do further spectrum analysis. It shows that the measured frequency ranges from 10 Hz to 1 000 Hz and phase range is covered by -10 rad～10 rad. The phase sensitivity is 0.5 V/rad. This system is proved to show high resolution and wide dynamic range. |
| Keywords: | phase demodulation Labview software demodulation interferometric sensor |
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