Int J Performability Eng ›› 2020, Vol. 16 ›› Issue (3): 383-391.doi: 10.23940/ijpe.20.03.p7.383391

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Heart Sound Acquisition with ECM Sensor Array and Array Data Fusion Algorithm

Tian Wanga, Yunbo Shia,*, Wolfram Hardtb, Qiaohua Fenga, and Lingui Kanga   

  1. aHigher Educational Key Laboratory for Measuring and Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology, Harbin, 150080, China;
    bFaculty of Computer Science, Chemnitz University of Technology, Chemnitz, D-09111, Germany
  • Submitted on ; Revised on ; Accepted on
  • Contact: Yunbo Shi

Abstract: In this paper, a sensor array using small ECM sensors is proposed to construct a lightweight heart sound pickup device, and a data processing unit combining FPGA and MCU is established to interface with the sensor array and perform multiple sensor data processing jobs. By studying this sensor array and data processing unit, a possible method of designing a small-size, low-cost heart sound recorder is presented. The prototype device combining the sensor array and data processing unit running with the array data fusion algorithm gives the following result: the background noise level of heart sounds processed by the data processing unit is 2 dB lower than that of any single sensor output in the sensor array. Also, a comparison between the heart sounds recorded by the prototype device and those recorded by a dedicated heart sound sensor is made, showing that the prototype device is capable of recording heart sounds with more details. The sensor array and data processing unit is suitable for achieving compact and lightweight heart sound acquisition.

Key words: ECM Sensor, sensor array, heart sound acquisition, data fusion