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Aiming at the temperature measurement requirements of fiber grating sensors, this paper proposes and implements a Zynq-based Fiber Bragg Grating (FBG) temperature demodulation system. The system adopts the Zynq architecture, and the acquisition of FBG spectra and the calculation of the center wavelength are realized in the hardware system. Through the analysis and optimization of Gaussian fitting peak-seeking algorithm, the matrix operation is used to reduce the amount of curve-fitting operations, and the FBG center wavelength solving is realized in the hardware system, which takes into account the demodulation accuracy and at the same time, improves the demodulation rate and real-time performance of the system. The miniaturized fiber grating temperature demodulation system developed has a wavelength demodulation range of 1 510 nm ~ 1 590 nm with a stability of ±2 pm, which has a good potential application value in structural monitoring and other fields.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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