ArticleSensors (Basel, Switzerland)2022
Research on the Time Drift Stability of Differential Inductive Displacement Sensors with Frequency Output.
Article in Sensors (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 32 citations in OpenAlex.
- Soft Mechanical Inductive Sensors: Principles, Design, and Applications.Micromachines · 2026Review
- Inductive Displacement Sensor Operating in an LC Oscillator System Under High Pressure Conditions-Basic Design Principles.Sensors (Basel, Switzerland) · 2025Article
- Integrated Precision High-Frequency Signal Conditioner for Variable Impedance Sensors.Sensors (Basel, Switzerland) · 2024Article
- A Novel Tandem Differential Edge Sensor Layout for Segmented Mirror Telescopes.Sensors (Basel, Switzerland) · 2023Article
- Effect of Excitation Signal on Double-Coil Inductive Displacement Transducer.Sensors (Basel, Switzerland) · 2023Article
- Effect of the Coil Excitation Method on the Performance of a Dual-Coil Inductive Displacement Transducer.Sensors (Basel, Switzerland) · 2023Article
- Methodology for Eddy Current Losses Calculation in Linear Variable Differential Transformers (LVDTs).Sensors (Basel, Switzerland) · 2023Article
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Authors and funding
9 authors at 4 institutions in 2 countries.
Funding
Abstract
An edge displacement sensor is one of the key technologies for building large segmented mirror astronomical optical telescopes. A digital interface is one novel approach for sensor technologies, digital transformation and the Internet of Things (IoT) in particular. Frequency output sensors and inductance-to-digital converter (LDC) demonstrated significant advantages in comparison with conventional sensors with analog-to-digital converter (ADC) interfaces. In order for the differential inductive frequency output displacement (DIFOD) sensor to meet the high-stability requirements of segmented mirror astronomical telescopes, it is important to understand the factors for time drift of the sensor. This paper focuses on the investigation of key factors of sensor structure and material, signal conditioning and interface, and fixtures for time drift to permanently installed applications. First, the measurement principle and probe structural characteristics of the sensor are analyzed. Then, two kinds of signal conditioning and digitalization methods using resonance circuits and LDC chips are implemented and compared. Finally, the time drift stability experiments are performed on the sensors with different signal conditioning methods and fixtures under controlled temperature. Experimental results show that the magnetic shield ring effectively improves the sensitivity and quality factor of the sensors, the time drift stability of the sensor using the signal conditioning based on resonance circuits is better than that of the sensors using LDC chips, and the root mean square (RMS) of the sensor time drift meets the requirement of 0.01 μm/24 h. This study will help further development of high-stability of frequency output sensors and IoT-based systems for scaled-up applications in the future.
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