Wearable fiber grating demodulation based on photonic integrated chip

Hongqiang LI; Quanhua MAO; Zhixuan AN; Zhilin LIN; Yingjie WANG; Wentao MENG; Zhiyue ZHU; Zhen ZHANG; Prades Garcia Juan Daniel

doi:10.5768/JAO202344.0108001

Journal of Applied Optics, Volume. 44, Issue 1, 219(2023)

Wearable fiber grating demodulation based on photonic integrated chip

Hongqiang LI1,*... Quanhua MAO1, Zhixuan AN1, Zhilin LIN1, Yingjie WANG1, Wentao MENG1, Zhiyue ZHU1, Zhen ZHANG2 and Prades Garcia Juan Daniel3 |Show fewer author(s)

Author Affiliations

¹Tianjin Key Laboratory of Optoelectronic Detection Technology and System, School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China

²School of Computer Science and Technology, Tianjin Polytechnic University, Tianjin 300387, China

³Department of Electronic and Biomedical Engineering,University of Barcelona, Barcelona E-08028, Spain

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Figures & Tables(9)

Fig. 1. Schematic diagram of demodulation system

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Fig. 2. Physical picture of flexible circuit

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Fig. 3. Schematic diagram of temperature demodulation

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Fig. 4. Schematic diagram of heart sound demodulation

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Fig. 5. Physical picture of sensor and experimental results

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Fig. 6. Experimental results of temperature demodulation

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Fig. 7. Physical picture of sensor and signal processing

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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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Table 1. Measured characteristic parameters of heart sound signal
心动周期/ms 心率/次·min⁻¹ 第一心音时限/ms 第二心音时限/ms 心力
实测值 803 75 116 71 0.92
正常范围 600～1000 60～100 80～160 60～120 0.5～2.5

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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

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