Tu-EFS-02 - A Lensless Microscope-Based Sensor for 3D Displacement Measurement in Infrastructure Monitoring

Event

EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich

Band

Poster

Chapter

Sensor Applications: Environment, Food And Space

Author(s)

L. Yan, A. B. Dharmawan, J. D. Prades - Technische Universität Braunschweig,Braunschweig (Germany), J. Gülink - QubeDot GmbH,Braunschweig (Germany), I. Zrazinska, F. Hernandez - Worldsensing S.L.,Barcelona (Spain)

Pages

638 - 639

DOI

10.5162/eurosensors2026/Tu-EFS-02

ISBN

978-3-910600-12-6

Price

free

Abstract

We developed a cost-effective, compact lensless imaging system designed for 3D displacement tracking in the context of structural health monitoring. Lateral displacement is measured using phase-correlationbased image registration, while axial displacement is estimated from illumination-dependent image shifts using a geometric model. Experiments show lateral resolution down to 5 micrometers (x-y axes) and axial resolution of about 0.1 millimeters (z axis) over a dynamic range up to 18 millimeters. This instrument enables compact non-contact monitoring of microscopic 3D movements in cracks and joints.