Novel application of ScAlN PMUT for intravenous infusion drip monitoring

被引：0

作者：

Yang, Lei ^{[1
,2
]}

Zhang, Jin ^{[3
]}

Zhang, Long ^{[1
,2
]}

Zong, Jianwei ^{[1
,2
]}

Ren, Hao ^{[4
]}

Lou, Liang ^{[1
,2
]}

机构：

[1] Shanghai Univ, Sch Microelect, Shanghai 201800, Peoples R China

[2] Shanghai Ind Technol Res Inst, 235 Chengzhong Rd, Shanghai 201800, Peoples R China

[3] Shanghai Inst Microsyst & Informat Technol, Shanghai 201800, Peoples R China

[4] ShanghaiTech Univ, Sch Informat Sci & Technol, Room 3-328,393 Huaxia Middle Rd, Shanghai 201210, Peoples R China

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2025年 / 386卷

关键词：

PMUT; Low Power Consumption; Drip Monitoring; TRANSDUCERS; ERRORS;

D O I：

10.1016/j.sna.2025.116326

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This study, for the first time, demonstrates a drip meter using Scandium Aluminum Nitride Piezoelectric MicroElectromechanical Ultrasonic Transducer(ScAlN PMUT) chip as an "ear" in intravenous infusion application. The device can effectively detect the liquid waveform change caused by the drip. A clip structure is designed to ensure good contact between the sensor and the tube wall. The signal-to-noise ratio(SNR) is up to 14.5 dB and 10 dB at 5 drips per second (dps) and 11 dps, respectively. The relative error rate at 11 dps is measured below 0.8 %. With very low power consumption, low cost and high performance, the device proves ideal for long-term, continuous intravenous drip monitoring.

引用

页数：9

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