ArticleCommunications engineering2026
Batteryless wireless tilt sensor with self-calibration capability for structural health monitoring.
Article in Communications engineering, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
4 authors.
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Abstract
Aging infrastructures require constant monitoring to prevent major disasters. Accurate tilt detection is vital in determining the instability of bridges and foundations; however, existing systems depend on batteries, cables, and periodic calibration. We present a battery-free wireless tilt sensor based on a dual-band microwave structure that allows self-calibration against varying environmental effects and distance ambiguity. The sensor uses harvested energy from signals transmitted by a reader and integrates sensing, communication, and antenna functionalities into one device. The measurement results show that tracking the phase difference between two bands mitigates environmental factors. A 36° phase shift over a tilt range of -10° to +10° is observed, corresponding to a sensitivity of 1.8° of measured phase per 1° of actual tilt. The system is fully integrated, IoT-ready, and facilitates easy integration into a sensor network. It also creates a reliable platform for monitoring critical infrastructures in real-time to ensure rapid measurement of tilts from multiple sensors.
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Registered trials
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