Body Area Networks: Smart IoT and Big Data for Intelligent Health Management. 14th EAI International Conference, BODYNETS 2019, Florence, Italy, October 2-3, 2019, Proceedings

Research Article

A Piezoelectric Heart Sound Sensor for Wearable Healthcare Monitoring Devices

  • @INPROCEEDINGS{10.1007/978-3-030-34833-5_2,
        author={Zhenghao Chen and Dongyi Chen and Liuhui Xue and Liang Chen},
        title={A Piezoelectric Heart Sound Sensor for Wearable Healthcare Monitoring Devices},
        proceedings={Body Area Networks:  Smart IoT and Big Data for Intelligent Health Management. 14th EAI International Conference, BODYNETS 2019, Florence, Italy, October 2-3, 2019, Proceedings},
        proceedings_a={BODYNETS},
        year={2019},
        month={11},
        keywords={Wearable Heart sound sensor Finite element method Signal-to-noise ratio},
        doi={10.1007/978-3-030-34833-5_2}
    }
    
  • Zhenghao Chen
    Dongyi Chen
    Liuhui Xue
    Liang Chen
    Year: 2019
    A Piezoelectric Heart Sound Sensor for Wearable Healthcare Monitoring Devices
    BODYNETS
    Springer
    DOI: 10.1007/978-3-030-34833-5_2
Zhenghao Chen1, Dongyi Chen1,*, Liuhui Xue1, Liang Chen1
  • 1: University of Electronic Science and Technology of China
*Contact email: dychen@uestc.edu.cn

Abstract

Heart disease is the leading cause of death all around the world. And heart sound monitoring is a commonly used diagnostic method. This method can obtain vital physiological and pathological evidence about health. Many existing techniques are not suitable for long-term dynamic heart sound monitoring since their large size, high-cost and uncomfortable to wear. This paper proposes a small, low-cost and wearable piezoelectric heart sound sensor, which is suitable for long-term dynamic monitoring and provides technical support for preliminary diagnosis of heart disease. First, the theoretical analysis and finite element method (FEM) simulation have been carried out to determine the optimum structure size of piezoelectric sensor. Subsequently, the sensor is embedded into the fabric-based chest strap to verify the detection performance in wearable scenarios. An existing piezoelectric sensor (TSD108) is used as reference. The designed sensor can acquire complete heart sound signals, and its signal-to-noise ratio is 2 dB higher than that of TSD108.