Signal concentrating waveguide array

A waveguide array with tapered elements addresses the issue of fluid recirculation in ultrasonic measurement systems, improving accuracy by minimizing cavity size and maintaining signal integrity across varying fluid conditions.

WO2026146394A1PCT designated stage Publication Date: 2026-07-09SENSIA NETHERLANDS BV
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SENSIA NETHERLANDS BV
Filing Date
2025-12-26
Publication Date
2026-07-09

AI Technical Summary

Technical Problem

Ultrasonic measurement systems in fluid transportation networks face challenges with recirculation of fluid in cavity openings, leading to inaccurate and non-linear measurements due to fluid impedance variations and refraction of ultrasonic signals, especially when using larger transducers and housings in conduits with varying fluid properties.

Method used

The implementation of a waveguide array with tapered waveguide elements and a housing configuration that reduces the size of cavity openings, maintaining acoustic coupling while minimizing recirculation zones and ensuring accurate signal transmission across varying fluid conditions.

Benefits of technology

This configuration enhances measurement accuracy by reducing non-linearity and signal refraction, allowing for precise determination of fluid velocity and flow rate in conduits with diverse fluid properties.

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Abstract

A waveguide array is configured to convey ultrasonic soundwaves. The waveguide array includes a plurality of waveguide elements. Each of the waveguide elements defines a proximal end configured to receive the ultrasonic soundwaves produced by the transducer and a distal end opposing the proximal end. A cross-sectional width of each of the waveguide elements is less than a wavelength of the ultrasonic soundwaves. An inward area of the waveguide array at the proximal ends of the waveguide elements is greater than an outward area of the waveguide array at the distal ends of the waveguide elements.
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