Passive Wireless Sensor for Displacement Monitoring in Metal Structures

Kuhn, Matheus Freitas; Breier, Guilherme Petry; Clarke, Thomas Gabriel Rosauro

doi:10.1109/tla.2018.8408427

Cited by 6 publications

(2 citation statements)

References 7 publications

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“…There are a number of displacement sensors in Table 3. The helical antenna [27] is for built-in application; the patch antenna fed by capacitive microstrip lines [33] and the patch antenna with overlapping sub-patch [34] have great sensitivity with small measuring range, which is suitable for crack propagation monitoring; the sensor with complementary split-ring resonators [44] can measure two-dimensional displacement; and the inverted-F antenna-based sensor [45] is designed for the measurement of displacement on metal surfaces. Compared with the sensor in [23], the CFIFA-based sensor has higher sensitivity, and by adjusting the dimensions of the CFIFA, the CFIFA-based sensor can obtain a larger measuring range.…”

Section: Resultsmentioning

confidence: 99%

A Capacitively-Fed Inverted-F Antenna for Displacement Detection in Structural Health Monitoring

Xue

Zheng

Guan

et al. 2020

Sensors

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This paper presents a capacitive displacement sensor based on a capacitively fed inverted-F antenna (CFIFA) for displacement detection. The sensor is composed of a grounded L-shape patch and a rectangular upper patch, forming a capacitor between them. The asymmetric dipole model is adopted to explain the frequency shift and current distribution of the proposed antenna sensor at its first-order resonance. The numerical simulation of the CFIFA using the Ansoft high-frequency structure simulator (HFSS) software is carried out to optimize the dimensional parameters, allowing the antenna to perform better. Two sets of CFIFAs are fabricated and tested for verification. Results show that the CFIFA has a good linear relationship between its first resonant frequency and the relative displacement, and is capable of a long range of displacement measuring.

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Section: Resultsmentioning

confidence: 99%

A Capacitively-Fed Inverted-F Antenna for Displacement Detection in Structural Health Monitoring

Xue

Zheng

Guan

et al. 2020

Sensors

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“…RFID technology has been widely used in the field of SHM, especially the use of RFID antennas for characterizing strains [1][2][3][4][5], and cracks [6][7][8] on metals, and many results have been achieved.…”

Section: Introductionmentioning

confidence: 99%

An encoded reconfigurable RFID strain sensor and its information fusion method

Chen¹,

Kang²,

Liu³

et al. 2022

Smart Mater. Struct.

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Chip-based radio frequency identification (RFID) sensor systems have been investigated for structural health monitoring (SHM) applications. However, there are disadvantages to using chips in sensor tags in terms of price, robustness and detecting power. In this paper, we propose a reconfigurable RFID-based chipless tag sensor for strain detection, which detects structural strain by observing the offset of the resonant frequency of the antenna and incorporates an encoding unit for tag identification. To realize the reconfigurability of the antenna, a PIN diode is added to control the antenna, and the frequency reconfigurability of the antenna is realized by controlling the turn on/off of the PIN diodes. The Kalman filter algorithm is used to realize the information fusion of multiple sensors to improve the sensor detection accuracy, and the background noise data enhancement is used to expand the original data samples to fuse the information of the three sensors' data. The relative inaccuracy is roughly 33.5% less after fusion compared to the measurement alone. The antenna was fabricated by an etching process and measured using VNA to verify the accuracy of the antenna simulation results.

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A High-Precision Distributed Microdisplacement Monitoring System: System Design and Data Processing Algorithms

Song

Li²,

2022

IEEE Trans. Instrum. Meas.

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Passive Wireless Sensor for Displacement Monitoring in Metal Structures

Cited by 6 publications

References 7 publications

A Capacitively-Fed Inverted-F Antenna for Displacement Detection in Structural Health Monitoring

A Capacitively-Fed Inverted-F Antenna for Displacement Detection in Structural Health Monitoring

An encoded reconfigurable RFID strain sensor and its information fusion method

A High-Precision Distributed Microdisplacement Monitoring System: System Design and Data Processing Algorithms

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