Work

Closed-Loop Resonant Density Sensor Design Using Electromagnetic Excitation and Magnetic Detection

Year: 2025

Type: article

Abstract: With a hyperbolic U-tube as the resonant sensing element, the resonant density sensor adopts electromagnetic excitation and magnetoelectric detection for electromechanical transduction, enabling an integrated synergistic design. The resonance principle of the resonant density sensor and the electromechanical conversion method, using the electromagnetic induction principle, are analysed, and the theoretical model is investigated based on ANSYS Electronics 2022 and ANSYS Workbench 2022 R1 simulation software. In open-loop mode, the amplitude–frequency characteristics of the resonant network are measured, and the mechanical structure achieves a quality factor greater than 1000, as determined by the bandwidth method; In closed-loop mode, the measurement stability of the hyperbolic U-tube is periodically measured under various fluid loads, and the real-time ambient temperature is monitored. The sensitivity of the closed-loop system for density measurement is close to −0.1 Hz·kg−1·m3, and the absolute error between the density correction value and the standard value is within ±1 kg/m3.

Source: Sensors

DOI: 10.3390/s25185740

Authors: Jingyue Zhang, Lvjian Li, Jintao Wang, Xiang Liu, Xiaowen Su

Institution: National Institute of Metrology

Language: English

Topic: Sensor Technology and Measurement Systems

Subfield: Computer Networks and Communications

Field: Computer Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funder: National Institute of Metrology, China