Zichun Zhou, Kun Liu, Junfeng Jing, Tianhua Xu, Shuang Wang, Zhenshi Sun, Hairuo Guo, Tiegen Liu. Optical Fiber Vibration-Sensing Event Recognition Based on CLDNN[J]. Acta Optica Sinica, 2021, 41(13): 1306019
- Acta Optica Sinica
- Vol. 41, Issue 13, 1306019 (2021)
Fig. 1. Schematic of DMZI distributed optical fiber vibration sensing system
Fig. 2. Equivalent optical path of DMZI distributed optical fiber vibration sensor
Fig. 3. Network structure of CLDNN
Fig. 4. DMZI distributed optical fiber vibration sensing system. (a) Sensing part; (b) demodulation part
Fig. 5. Preprocessing of knocking. (a) Schematic of superposition process of 5 frames of signals; (b) schematic of signal misalignment clipping after superposition
Fig. 6. Characteristic maps of 5 types of intrusion event signals. (a) No intrusion; (b) knocking; (c) crashing; (d) waggling; (e) kicking
Fig. 7. Variation of error function values of CNN in CLDNN under three convolution levels
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Table 1. Structural design parameters of CLDNN
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Table 2. Average recognition rate and average training time under different clipping conditions in three tests
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Table 3. Comparison of recognition results of three algorithms
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Table 4. [in Chinese]
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