Transit Time Difference Flowmeter for Intravenous Flow Rate Measurement Using 1-3 Piezoelectric Composite Transducers

Transit Time Difference Flowmeter for Intravenous Flow Rate Measurement Using 1-3 Piezoelectric Composite Transducers

The flow rate of injected medication implemented by intravenous (IV) systems must be accurately monitored and meticulously controlled to prevent medical accidents. In this paper, an ultrasonic flowmeter (UF) with 1-3 piezoelectric composite transducers was designed, fabricated, and tested on a varie...

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Veröffentlicht in:IEEE sensors journal 2017-09, Vol.17 (17), p.5741-5748
Hauptverfasser: Kim, Taeyang, Kim, Jinwook, Jiang, Xiaoning
Format: Artikel
Sprache:eng
Schlagworte:
1–3 composite transducer
Acoustic impedance
Acoustic measurements
Acoustic propagation
Acoustics
Beams (radiation)
Electron tubes
Flow control
Flow velocity
Impedance
Impedance matching
Impedance measurement
Intravenous (IV) flow rate
Piezoelectricity
Transducers
Transit time
transit time difference
ultrasonic flowmeter
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Beschreibung
Zusammenfassung:The flow rate of injected medication implemented by intravenous (IV) systems must be accurately monitored and meticulously controlled to prevent medical accidents. In this paper, an ultrasonic flowmeter (UF) with 1-3 piezoelectric composite transducers was designed, fabricated, and tested on a variety of flow rates of mimic medical injections. The transducer wedge for the angled beam propagation and an acoustic impedance matching layer were included in the design for transmission enhancement. To ensure an accurate measurement of flow rate, the effect of the flow distributions inside the IV tube was taken into account. The developed UF exhibited the capability of detecting low flow rates (
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2017.2727340