Microwave Resonator Sensor for Detection of Dielectric Objects in Metal Pipes
Paper i proceeding, 2015

We present a microwave sensor for detection of dielectric objects in material mixtures that are transported in metal pipes. The sensor exploits several resonant modes that operate below the cut-off frequency of the dominant waveguide mode in the pipe. This non-invasive measurement technique is particularly attractive for detection of undesirable objects in certain industries. Initial measurements on a prototype sensor show good agreement with electromagnetic simulations and indicate favorable detection properties. A detection algorithm based on the likelihood-ratio test is evaluated based on synthetically generated data from a finite-element model that simulates inhomogeneous background materials. We conclude that the multi-mode feature of the sensor is advantageous for the ability to distinguish between undesirable objects and ordinary fluctuations in the background material.

signal detection

microwave resonator

microwave measurement

Författare

Johan Nohlert

Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

Thomas Rylander

Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

Tomas McKelvey

Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 11-14 May 2015, Pisa

1091-5281 (ISSN)

914-919

Styrkeområden

Produktion

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

Drivkrafter

Innovation och entreprenörskap

Ämneskategorier

Signalbehandling

Annan elektroteknik och elektronik

DOI

10.1109/I2MTC.2015.7151391

ISBN

978-1-4799-6113-9