Smart textile sensing system for human respiration monitoring based on fiber Bragg grating

Cheng Zhang; Chang-yun Miao; Hong-qiang Li; Hui-chao Song; Fan-jie Xu

doi:10.1117/12.834970

24 August 2009 Smart textile sensing system for human respiration monitoring based on fiber Bragg grating

Cheng Zhang, Chang-yun Miao, Hong-qiang Li, Hui-chao Song, Fan-jie Xu

Proceedings Volume 7381, International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors; 738104 (2009) https://doi.org/10.1117/12.834970
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

Magnetic resonance imaging (MRI) has become an indispensable aid to diagnosis and treatment. As the doctor cannot accompany the patient, it is essential that the patient be monitored remotely to avoid the risk of respiration being impaired by anesthetic drugs or upper airway obstruction. A smart wearable textile sensing system is described in this paper. A fiber Bragg grating (FBG) with polymer encapsulation has been woven into an elastic bandage to detect the respiration motion. According to the strain principle of FBG, the breathing rate and intensity can be obtained by measuring the variety of FBG reflected wavelength. In order to eliminate the temperature cross-sensitivity, a FBG temperature sensor has also been woven into the bandage to achieve the temperature compensation computing. Based on the tunable Fabry-Perot filter wavelength demodulated theory, wavelength measuring method and data processing arithmetic have been presented, and the system with ARM microprocessor has been designed to process and display the breathing information. The experiments to the system have proved that the wavelength measuring range is about 40nm, the resolution of wavelength can arrive at 2pm, and the sampling rate is 5Hz.

Citation Download Citation

Cheng Zhang, Chang-yun Miao, Hong-qiang Li, Hui-chao Song, and Fan-jie Xu "Smart textile sensing system for human respiration monitoring based on fiber Bragg grating", Proc. SPIE 7381, International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors, 738104 (24 August 2009); https://doi.org/10.1117/12.834970

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