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

Kim, Taeyang; Kim, Jin-Wook; Jiang, Xiaoning

doi:10.1109/jsen.2017.2727340

Cited by 22 publications

(7 citation statements)

References 30 publications

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“…The developed UF successfully detected low flow rates (< 0.005 m/s) with a discrepancy of 1-2% compared with the reference rate of the infusion. (11) Rapid advances in personal health-care systems based on implantable and wearable medical devices promise to greatly improve the quality of diagnosis and treatment for a range of medical conditions. (16) However, increasing the programming ability and wireless connectivity of medical devices also provide opportunities for malicious attackers.…”

Section: Literature Reviewmentioning

confidence: 99%

Design of Bidirectional Security System for Intravenous Drip Infusion with Hybrid Communication

Chen¹,

Chen²,

Hsu³

et al. 2020

Sensors and Materials

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Automation systems are widely applied in many fields such as manufacturing, warehousing, machinery, power management, and smart living spaces. In this study, a bidirectional security system was designed and applied to intravenous (IV) infusion for wards in hospitals. The system comprised a high-resolution gravity sensor, a 2.4 GHz XBee wireless sensor network communication module, and a drip-quantity-detecting control box with a HOTEC Corp. MCU HT66F70A core microprocessor to achieve automated management in the medical field. Toward achieving sustainability in our medical environment and computer science technology, we adopted data transformation, an Internet of Things (IoT) wireless communication and sensor network, and an app to construct the bidirectional security system for IV infusion. The main aims of the proposed method in this study were as follows: (1) to invent a reliable method to detect the remaining quantity of a patient's drip infusion using a gravity sensor so as to prevent the dangerous condition of blood flowing backward or air intruding into the vein as well as to decrease the burden on nursing staff in wards, and (2) to avoid medical disputes due to the incorrect infusion from drips, the autorecognition of patients using scanning QR code technology was applied in the medical management system. The outcome of the study was proved successful and has won many important national invention contests.

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Section: Literature Reviewmentioning

confidence: 99%

Design of Bidirectional Security System for Intravenous Drip Infusion with Hybrid Communication

Chen¹,

Chen²,

Hsu³

et al. 2020

Sensors and Materials

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show abstract

“…Categorically inherit load cell-based weighing methodology to monitor the IV fluid level. Ultrasonic coupled solutions are meant for Zhang et al (2011) and Kim et al (2017). The relevant studies lack in power consumption, ease of implementation, communication devices, heterogeneity, sensor reliability and clinical inertia.…”

Section: Related Workmentioning

confidence: 99%

Novel implementation of IoT based non-invasive sensor system for real-time monitoring of intravenous fluid level for assistive e-healthcare

Ray

Thapa

Dash

et al. 2019

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Purpose The purpose of the study is to design and develop an pervasive and smart Internet of Things (IoT)-based sensor system to monitor he real-time intravenous (IV) fluid bag level. Design/methodology/approach This paper investigates such issue and performs several experiments to develop a non-invasive, semi-automatic system to monitor IoT-based IV fluid level in real-time. Findings The outcome of this study is a prototype hardware that includes an ESP8266 based embedded Web server to disseminate the fluid exhaust status flag to its connected users. Nurses can get the prompt intimation about the status of IV fluid bag whether it is about to get empty. Research limitations/implications IoT is the backbone of the proposed system. Multi-master system need to be studied in future. Practical implications Non-invasive and real-time IoT-based novel technique is developed with power-efficient and cost-effective pervasive sensors. Social implications This is applicable for pervasive and assistive e-health-care services by care givers and medical professionals. Originality/value The deployed system is controlled by ATtiny85 with help of LM35 temperature sensor. The results show a promising future of the proposed development in enhancing IoT-based smart health-care service in the coming days.

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“…Flow measurement is one of the most important parameters for process monitoring. In particular, low flow measurement in a small-diameter channel is critical for accurate control applications, such as chemical mixing and drug dispensing 1 , 2 . Channels with hydraulic diameters of 1–6 mm are classified as small-diameter channels 3 .…”

Section: Introductionmentioning

confidence: 99%

A miniaturized transit-time ultrasonic flowmeter based on ScAlN piezoelectric micromachined ultrasonic transducers for small-diameter applications

Gao

Chen

et al. 2023

Microsyst Nanoeng

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Transit-time ultrasonic flowmeters (TTUFs) are among the most widely used devices for flow measurements. However, traditional TTUFs are usually based on a bulk piezoelectric transducer, which limits their application in small-diameter channels. In this paper, we developed a miniaturized TTUF based on scandium-doped aluminum nitride (ScAlN) piezoelectric micromachined ultrasonic transducers (PMUTs). The proposed TTUF contains two PMUT-based transceivers and a π-type channel. The PMUTs contain 13 × 13 square cells with dimensions of 2.8 × 2.8 mm2. To compensate for the acoustic impedance mismatch with liquid, a layer of polyurethane is added to the surface of the PMUTs as a matching layer. The PMUT-based transceivers show good transmitting sensitivity (with 0.94 MPa/V surface pressure) and receiving sensitivity (1.79 mV/kPa) at a frequency of 1 MHz in water. Moreover, the dimensions of the π-type channel are optimized to achieve a measurement sensitivity of 82 ns/(m/s) and a signal-to-noise ratio (SNR) better than 15 dB. Finally, we integrate the fabricated PMUTs into the TDC-GP30 platform. The experimental results show that the developed TTUF provides a wide range of flow measurements from 2 to 300 L/h in a channel of 4 mm diameter, which is smaller than most reported channels. The accuracy and repeatability of the TTUF are within 0.2% and 1%, respectively. The proposed TTUF shows great application potential in industrial applications such as medical and chemical applications.

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

Cited by 22 publications

References 30 publications

Design of Bidirectional Security System for Intravenous Drip Infusion with Hybrid Communication

Design of Bidirectional Security System for Intravenous Drip Infusion with Hybrid Communication

Novel implementation of IoT based non-invasive sensor system for real-time monitoring of intravenous fluid level for assistive e-healthcare

A miniaturized transit-time ultrasonic flowmeter based on ScAlN piezoelectric micromachined ultrasonic transducers for small-diameter applications

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