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Journal articles on the topic 'Piezopolymer sensor'

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Author: Grafiati

Published: 10 March 2023

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1

Chen, Yuquan, Liren Wang, and Wen H. Ko. "A piezopolymer finger pulse and breathing wave sensor." Sensors and Actuators A: Physical 23, no. 1-3 (April 1990): 879–82. http://dx.doi.org/10.1016/0924-4247(90)87051-j.

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2

Bernasconi, Roberto, Davood Hatami, Hossein Nouri Hosseinabadi, Valentina Zega, Alberto Corigliano, Raffaella Suriano, Marinella Levi, Giacomo Langfelder, and Luca Magagnin. "Hybrid additive manufacturing of a piezopolymer-based inertial sensor." Additive Manufacturing 59 (November 2022): 103091. http://dx.doi.org/10.1016/j.addma.2022.103091.

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3

Wang, Feng, Mami Tanaka, and Seiji Chonan. "A PVDF piezopolymer sensor for unconstrained cardiorespiratory monitoring during sleep." International Journal of Applied Electromagnetics and Mechanics 16, no. 3-4 (December 29, 2002): 181–88. http://dx.doi.org/10.3233/jae-2002-236.

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4

Sasaki, Minoru, and Masayuki Okugawa. "Motion Control of a Piezopolymer Bimorph Flexible Microactuator." Journal of Robotics and Mechatronics 7, no. 6 (December 20, 1995): 467–73. http://dx.doi.org/10.20965/jrm.1995.p0467.

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An optimal feedback control of a flexible microactuator made of a bimorph piezoelectric high-polymer material (PVDF: Poly Vinylidene Fluoride), is proposed in this paper. This optimal feedback control is based on the assumption that the full state vector of the system is available for measurement although practically all state variables are very difficult to measure in the case of a distributed parameter system. An observer is used to estimate the entire state vector of the system, but the presence of sensor noise tends to adversely affect the convergence of the observer. This naturally leads to a stochastic observer commonly known as the Kalman filter. Numerical and experimental results demonstrate the effectiveness of the proposed controller design method.

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5

Wang, Feng, Mami Tanaka, and Seiji Chonan. "Development of a PVDF Piezopolymer Sensor for Unconstrained In-Sleep Cardiorespiratory Monitoring." Journal of Intelligent Material Systems and Structures 14, no. 3 (March 2003): 185–90. http://dx.doi.org/10.1177/1045389x03014003006.

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6

Zuckerwar, A. J., R. A. Pretlow, J. W. Stoughton, and D. A. Baker. "Development of a piezopolymer pressure sensor for a portable fetal heart rate monitor." IEEE Transactions on Biomedical Engineering 40, no. 9 (1993): 963–69. http://dx.doi.org/10.1109/10.245618.

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7

Lee, Young Sup, and Ki Hong Shin. "Velocity Feedback with a Non-Collocated Pair of Sensor and Actuator for Tip Vibration Suppression of a Beam." Key Engineering Materials 321-323 (October 2006): 200–203. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.200.

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This paper presents a theoretical and experimental study of a non-collocated pair of piezopolymer PVDF sensor and piezoceramic PZT actuator, which are bonded on a cantilever beam, in order to suppress unwanted vibration at the tip of the beam. The PZT actuator patch was bonded near the clamped part and the PVDF sensor, which was triangularly shaped, was bonded on the other part of the beam. This is because the triangular PVDF sensor is known that it can detect the tip velocity of a cantilever beam. Because the arrangement of the sensor and actuator pair is not collocated and overlapped each other, the pair can avoid so called "in-plane coupling", which can be found at a matched piezoelectric sensor and actuator pair and restricts the stability and performance of direct velocity feedback control. The test beam is made of aluminum with the dimension of 200 × 20 × 2 mm. Before control, the sensor-actuator frequency response function is confirmed to have a nice phase response without accumulation in a reasonable frequency range of up to 5000 Hz. The feedback control attenuates the magnitude of the first two resonances in the error spectrum of about 6 -7 dB.

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8

Pullano, Salvatore A., Antonino S. Fiorillo, Gianluca Barile, Vincenzo Stornelli, and Giuseppe Ferri. "A Second-Generation Voltage-Conveyor-Based Interface for Ultrasonic PVDF Sensors." Micromachines 12, no. 2 (January 20, 2021): 99. http://dx.doi.org/10.3390/mi12020099.

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Exploiting the transmission and reception of low frequency ultrasounds in air is often associated with the innate echolocating abilities of some mammals, later emulated with sophisticated electronic systems, to obtain information about unstructured environments. Here, we present a novel approach for the reception of ultrasounds in air, which exploits a piezopolymer broadband sensor and an electronic interface based on a second-generation voltage conveyor (VCII). Taking advantage of its capability to manipulate both voltage and current signals, in this paper, we propose an extremely simple interface that presents a sensitivity level of about −100 dB, which is in line with commercially available references. The presented results are obtained without any filtration stage. The second-generation voltage conveyor active device is implemented through a commercially available AD844, with a supply voltage of ±15 V.

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9

Chrysochoidis, N. A., and E. Gutiérrez. "Evaluation of the sensitivity and fatigue performance of embedded piezopolymer sensor systems in sandwich composite laminates." Smart Materials and Structures 24, no. 2 (January 23, 2015): 025032. http://dx.doi.org/10.1088/0964-1726/24/2/025032.

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10

Capineri, Lorenzo, and Andrea Bulletti. "A Versatile Analog Electronic Interface for Piezoelectric Sensors Used for Impacts Detection and Positioning in Structural Health Monitoring (SHM) Systems." Electronics 10, no. 9 (April 29, 2021): 1047. http://dx.doi.org/10.3390/electronics10091047.

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Continuous monitoring of mechanical impacts is one of the goals of modern SHM systems using a sensor network installed on a structure. For the evaluation of the impact position, there are generally applied triangulation techniques based on the estimation of the differential time of arrival (DToA). The signals generated by impacts are multimodal, dispersive Lamb waves propagating in the plate-like structure. Symmetrical S0 and antisymmetrical A0 Lamb waves are both generated by impact events with different velocities and energies. The discrimination of these two modes is an advantage for impact positioning and characterization. The faster S0 is less influenced by multiple path signal overlapping and is also less dispersive, but its amplitude is generally 40–80 dB lower than the amplitude of the A0 mode. The latter has an amplitude related to the impact energy, while S0 amplitude is related to the impact velocity and has higher frequency spectral content. For these reasons, the analog front-end (AFE) design is crucial to preserve the information of the impact event, and at the same time, the overall signal chain must be optimized. Large dynamic range ADCs with high resolution (at least 12-bit) are generally required for processing these signals to retrieve the DToA information found in the full signal spectrum, typically from 20 kHz to 500 kHz. A solution explored in this work is the design of a versatile analog front-end capable of matching the different types of piezoelectric sensors used for impact monitoring (piezoceramic, piezocomposite or piezopolymer) in a sensor node. The analog front-end interface has a programmable attenuator and three selectable configurations with different gain and bandwidth to optimize the signal-to-noise ratio and distortion of the selected Lamb wave mode. This interface is realized as a module compatible with the I/O of a 16 channels real-time electronic system for SHM previously developed by the authors. High-frequency components up to 270 kHz and lower-frequency components of the received signals are separated by different channels and generate high signal-to-noise ratio signals that can be easily treated by digital signal processing using a single central unit board with ADC and FPGA.

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11

Zuckerwar, Allan J., John W. Stoughton, Robert A. Pretlow, and Donald A. Baker. "Passive fetal heart rate monitor using piezopolymer pressure sensors." Journal of the Acoustical Society of America 89, no. 4B (April 1991): 1922. http://dx.doi.org/10.1121/1.2029518.

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12

Lambinet, Florian, and Zahra Sharif Khodaei. "Smart Patch Repair with Low Profile PVDF Sensors." Key Engineering Materials 754 (September 2017): 359–62. http://dx.doi.org/10.4028/www.scientific.net/kem.754.359.

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Bonded repair of composite structures still remains a major concern for the airworthiness authorities because of the uncertainty about the repair quality. This work, investigates the applicability of conventional Structural Health Monitoring (SHM) techniques for monitoring of bonded repair with ring-shaped low profile sensors. A repaired composite panel has been sensorized with two Ring-Shaped Polyvinylidene fluoride piezopolymer Sensors (RSPS) and a piezoelectric (PZT) transducer. An electromechanical impedance (EMI) and Lamb wave analysis have been carried out to check the sensitivity of these sensors to detect an artificially introduced damage simulating a disbond of the repair. The state of the repair have been successfully monitored and reported by both methods.

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13

Lee, C. ‐K, and F. C. Moon. "Laminated piezopolymer plates for torsion and bending sensors and actuators." Journal of the Acoustical Society of America 85, no. 6 (June 1989): 2432–39. http://dx.doi.org/10.1121/1.397792.

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14

Fang, Zhao, Ninad Mokhariwale, Feng Li, Suman Datta, and Q. M. Zhang. "Magnetoelectric Sensors With Directly Integrated Charge Sensitive Readout Circuit—Improved Field Sensitivity and Signal-to-Noise Ratio." IEEE Sensors Journal 11, no. 10 (October 2011): 2260–65. http://dx.doi.org/10.1109/jsen.2011.2113333.

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The large magnetoelectric (ME) coupling in the ME laminates makes them attractive for ultrasensitive room temperature magnetic sensors. Here ,we investigate the field sensitivity and signal-to-noise ratio (SNR) of ME laminates, consisting of magnetostrictive and piezoelectric layers (Metglas and piezopolymer PVDF were used as the model system), which are directly integrated with a low noise readout circuit. Both the theoretical analysis and experimental results show that increasing the number of piezoelectric layers can improve the SNR, especially at low frequencies. We also introduce a figure of merit to measure the overall influence of the piezolayer properties on the SNR and show that the newly developed piezoelectric single crystals of PMN-PT and PZN-PT have the promise to achieve a very high SNR and consequently ultra-high sensitivity room temperature magnetic sensors. The results show that the ME coefficients used in early ME composites development works may not be relevant to the SNR. The results also show that enhancing the magnetostrictive coefficient, for example, by employing the flux concentration effect, can lead to enhanced SNR.

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15

Makarova, L. A., Yu A. Alekhina, D. A. Isaev, M. F. Khairullin, and N. S. Perov. "Tunable layered composites based on magnetoactive elastomers and piezopolymer for sensors and energy harvesting devices." Journal of Physics D: Applied Physics 54, no. 1 (October 22, 2020): 015003. http://dx.doi.org/10.1088/1361-6463/abb7b7.

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16

Cheng, Z. Y., Suiqiong Li, Zhuo Xu, and Z. Y. Cheng. "Piezopolymer Diaphragm as high performance biosensor platform." MRS Proceedings 889 (2005). http://dx.doi.org/10.1557/proc-0889-w01-09.

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ABSTRACTPiezopolymer PVDF and P(VDF-TrFE) based diaphragms were fabricated. The diaphragm can be used as a high performance sensor platform for employing in liquid. The microelectronic process for fabricating microdiaphragm and its array is established. The performance of the PVDF based diaphragm in air and liquid was tested. It is found that the diaphragm works well in liquid.

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17

Park, Sung Cheol, Chaeyoung Nam, Changyeon Baek, Min-Ku Lee, Gyoung-Ja Lee, and Kwi-Il Park. "Enhanced Piezoelectric Performance of Composite Fibers Based on Lead-Free BCTZ Ceramics and P(VDF-TrFE) Piezopolymer for Self-Powered Wearable Sensors." ACS Sustainable Chemistry & Engineering, October 17, 2022. http://dx.doi.org/10.1021/acssuschemeng.2c05026.

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