Zhisheng Zhang, Shengpeng Wan, Lü Weilong, Junsong Yu. Research on Respiratory Measurement and Classification Based on Fiber Bragg Grating[J]. Laser & Optoelectronics Progress, 2023, 60(11): 1106030

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- Laser & Optoelectronics Progress
- Vol. 60, Issue 11, 1106030 (2023)

Fig. 1. FBG sensor package installation. (a) Packaged FBG sensors; (b) test installation of body parts

Fig. 2. Principle block diagram of respiratory signal acquisition system

Fig. 3. Collected respiratory signals. (a) Cough; (b) hold breathing; (c) normal breathing; (d) breathing after exercise

Fig. 4. Signal denoised by wavelet decomposition reconstruction of normal respiratory signal

Fig. 5. SVM binary classification schematic

Fig. 6. Particle swarm search flow chart

Fig. 7. Fitness curve of PSO optimization algorithm

Fig. 8. Confusion matrix of four kinds of respiratory signals. (a) SVM classification confusion matrix; (b) PSO-SVM classification confusion matrix

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