Hongqiang LI, Quanhua MAO, Zhixuan AN, Zhilin LIN, Yingjie WANG, Wentao MENG, Zhiyue ZHU, Zhen ZHANG, Prades Garcia Juan Daniel. Wearable fiber grating demodulation based on photonic integrated chip[J]. Journal of Applied Optics, 2023, 44(1): 219
- Journal of Applied Optics
- Vol. 44, Issue 1, 219 (2023)
Fig. 1. Schematic diagram of demodulation system
Fig. 2. Physical picture of flexible circuit
Fig. 3. Schematic diagram of temperature demodulation
Fig. 4. Schematic diagram of heart sound demodulation
Fig. 5. Physical picture of sensor and experimental results
Fig. 6. Experimental results of temperature demodulation
Fig. 7. Physical picture of sensor and signal processing
Fig. 8. Flow chart of heart sound signal processing and feature extraction
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Table 1. Measured characteristic parameters of heart sound signal
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