Search Results - "Willigen, Douwe van"
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Measurement of Pipe and Liquid Parameters Using the Beam Steering Capabilities of Array-Based Clamp-On Ultrasonic Flow Meters
Published in Sensors (Basel, Switzerland) (06-07-2022)“…Clamp-on ultrasonic flow meters (UFMs) are installed on the outside of the pipe wall. Typically, they consist of two single-element transducers mounted on…”
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2
Algorithm to Correct Measurement Offsets Introduced by Inactive Elements of Transducer Arrays in Ultrasonic Flow Metering
Published in Sensors (Basel, Switzerland) (30-11-2022)“…Ultrasonic flow meters (UFMs) based on transducer arrays offer several advantages. With electronic beam steering, it is possible to tune the steering angle of…”
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3
A Transceiver ASIC for a Single-Cable 64-Element Intra-Vascular Ultrasound Probe
Published in IEEE journal of solid-state circuits (01-10-2021)“…This article presents an application-specific integrated circuit (ASIC) designed for intra-vascular ultrasound imaging that interfaces 64 piezoelectric…”
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4
Measurement of Pipe and Fluid Properties With a Matrix Array-Based Ultrasonic Clamp-On Flow Meter
Published in IEEE transactions on ultrasonics, ferroelectrics, and frequency control (01-01-2022)“…Current ultrasonic clamp-on flow meters consist of a pair of single-element transducers that are carefully positioned before use. This positioning process…”
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An Algorithm to Minimize the Zero-Flow Error in Transit-Time Ultrasonic Flowmeters
Published in IEEE transactions on instrumentation and measurement (2021)“…Transit-time ultrasonic flowmeters are widely used in industry to measure fluid flow. In practice, ultrasonic flowmeters either show a zero-flow error or…”
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Design and Proof-of-Concept of a Matrix Transducer Array for Clamp-On Ultrasonic Flow Measurements
Published in IEEE transactions on ultrasonics, ferroelectrics, and frequency control (01-08-2022)“…Common clamp-on ultrasonic flow meters consist of two single-element transducers placed on the pipe wall. Flow speed is measured noninvasively, i.e., without…”
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Exploiting nonlinear wave propagation to improve the precision of ultrasonic flow meters
Published in Ultrasonics (01-09-2021)“…Acoustic wave propagation in ultrasonic flow measurements is typically assumed to be linear and reciprocal. However, if the transmitting transducer generates a…”
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Suppression of Lamb wave excitation via aperture control of a transducer array for ultrasonic clamp-on flow metering
Published in The Journal of the Acoustical Society of America (01-04-2020)“…During ultrasonic clamp-on flow metering, Lamb waves propagating in the pipe wall may limit the measurement accuracy by introducing absolute errors in the flow…”
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9
Acoustic Design of a Transducer Array for Ultrasonic Clamp-on Flow Metering
Published in 2019 IEEE International Ultrasonics Symposium (IUS) (01-10-2019)“…Current ultrasonic clamp-on flow meters are based on single-element transducers that require manual calibration by aligning these to a fixed acoustic path…”
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Conference Proceeding -
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Fabrication and Characterization of a Prototype Forward-Looking Single-Cable 64-Element Intra-Vascular Ultrasound Probe
Published in 2019 IEEE International Ultrasonics Symposium (IUS) (01-10-2019)“…This paper presents the integration steps towards a prototype forward-looking intra-vascular ultrasound probe. An ASIC (Application Specific Integrated…”
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Conference Proceeding -
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Pipe geometry calibration measurements for the improvement of ultrasonic clamp-on flow meters
Published in The Journal of the Acoustical Society of America (01-10-2019)“…Clamp-on flow meters need a-priori knowledge of pipe geometry and material properties for their operation. Estimation of these properties may limit the…”
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12
In-air ultrasonic gesture sensing with MEMS microphones
Published in IEEE SENSORS 2014 Proceedings (01-11-2014)“…The use of hand gestures for user interaction with computing devices is gaining popularity. This paper demonstrates that an effective ultrasonic…”
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Conference Proceeding -
13
In toto staining and preservation of peripheral nervous tissue
Published in Stain technology (1988)“…A simple quantitative modification of the in toto staining technique for nervous networks of Sihler is described. The results are demonstrated on the…”
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14
Localization of dopamine D2 receptor mRNA with non-radioactive in situ hybridization histochemistry
Published in Neuroscience letters (17-08-1992)“…A digoxigenin-labeled antisense 42-mer oligonucleotide was used for the localization of the dopamine D2 receptor mRNA in the rat brain. The digoxigenin label…”
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15
Feasibility of Ultrasonic Flow Measurements via Non-Linear Wave Propagation
Published in 2018 IEEE International Ultrasonics Symposium (IUS) (01-10-2018)“…Typically, ultrasonic flow meters assume linear wave propagation. Nevertheless, if the transducers of an ultrasonic flow sensor excite a pressure wave with a…”
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Conference Proceeding -
16
Minimizing the Zero-Flow Error in Transit-Time Ultrasonic Flow Meters
Published in 2018 IEEE International Ultrasonics Symposium (IUS) (01-10-2018)“…Transit-time ultrasonic flow meters are based on the fundamental idea that the flow is the only non-reciprocal effect between an upstream and downstream…”
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Conference Proceeding -
17
A 1.54mW/Element 150μm-Pitch-Matched Receiver ASIC with Element-Level SAR/Shared-Single-Slope Hybrid ADCs for Miniature 3D Ultrasound Probes
Published in 2019 Symposium on VLSI Circuits (01-06-2019)“…This paper presents an ultrasound receiver ASIC in 180nm CMOS that enables element-level digitization of echo signals in miniature 3D ultrasound probes. It is…”
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Conference Proceeding -
18
ASIC Design for a Single-Cable 64-Element Ultrasound Probe
Published in 2018 IEEE International Ultrasonics Symposium (IUS) (01-10-2018)“…This paper presents an ASIC (Application Specific Integrated Circuit) design for a catheter probe that interfaces 64 piezoelectric elements directly integrated…”
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Conference Proceeding -
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On the perception of the preferred jaw position in patients with symptoms of temporomandibular disorders
Published in Cranio (01-10-1987)Get more information
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