Continuously Wearable Stethoscope Based on MEMS Resonant Microphone Array

IF 3.5 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Microelectromechanical Systems Pub Date : 2026-10-01 Epub Date: 2026-07-09 DOI:10.1109/JMEMS.2026.3708434

Anik Sengupta;Akash Roy;Hongxiang Gao;Kianoush Sadeghian Esfahani;Yicheng Zhang;Eun Sok Kim

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引用次数: 0

Abstract

This paper describes continuous wireless transmission of lung sound picked up by a wearable stethoscope over an extended period of approximately 30 hours under a single coin-cell battery. The wearable stethoscope is based on a piezoelectric resonant microphone array (RMA) integrated with a low-power preamp and electronic circuits for signal processing and low-power lung-sound data communication through Bluetooth Low Energy (BLE) 5.0. Given the targeted acoustic features of lung sounds spanning over 200 - 800 Hz, the RMA’s resonant frequencies are designed to be at 250, 400, 600, and 800 Hz, with unamplified sensitivities ranging from 47 to 230 mV/Pa. The RMA is mounted on a printed circuit board (PCB) that houses op-amp-based preamps and low-pass filters. Another PCB housing a coin-cell battery and a commercial wireless chipset (CYBLE-416045-02) with an integrated antenna is placed over the pre-amp PCB. The two PCBs are integrated into a 3D-printed package measuring

$3.6\times 3.35 \times 2.02$

cm³, resulting in a lightweight (approximately 23g), wireless, and wearable stethoscope. [2026-0070]

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基于MEMS谐振麦克风阵列的连续可穿戴听诊器

本文描述了一个可穿戴听诊器在一个单一的硬币电池下，在大约30小时的延长时间内拾取肺部声音的连续无线传输。可穿戴听诊器基于压电谐振麦克风阵列（RMA），集成了低功耗前置放大器和电子电路，用于信号处理和通过低功耗蓝牙（BLE） 5.0进行低功耗肺声数据通信。考虑到肺音的目标声学特征跨越200 - 800赫兹，RMA的谐振频率被设计为250、400、600和800赫兹，未放大的灵敏度范围为47至230 mV/Pa。RMA安装在印刷电路板（PCB）上，电路板上装有基于运算放大器的前置放大器和低通滤波器。另一个PCB容纳硬币电池和商用无线芯片组（CYBLE-416045-02）与集成天线放置在前置放大器PCB上。这两个pcb集成到一个尺寸为3.6 × 3.35 × 2.02美元cm3的3d打印封装中，从而形成了一个重量轻（约23克）的无线可穿戴听诊器。(2026 - 0070)

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Microelectromechanical Systems 工程技术-工程：电子与电气

CiteScore

6.20

自引率

7.40%

发文量

115

审稿时长

7.5 months

期刊介绍： The topics of interest include, but are not limited to: devices ranging in size from microns to millimeters, IC-compatible fabrication techniques, other fabrication techniques, measurement of micro phenomena, theoretical results, new materials and designs, micro actuators, micro robots, micro batteries, bearings, wear, reliability, electrical interconnections, micro telemanipulation, and standards appropriate to MEMS. Application examples and application oriented devices in fluidics, optics, bio-medical engineering, etc., are also of central interest.