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

doi:10.23940/ijpe.20.03.p7.383391

Abstract

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

Tian Wang, Yunbo Shi, Wolfram Hardt, Qiaohua Feng, and Lingui Kang. Heart Sound Acquisition with ECM Sensor Array and Array Data Fusion Algorithm [J]. Int J Performability Eng, 2020, 16(3): 383-391.

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