Relevant bibliographies by topics / Electrostatic sensors

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Academic literature on the topic 'Electrostatic sensors'

Author: Grafiati
Published: 14 March 2023

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Journal articles on the topic "Electrostatic sensors"

1

Heydarianasl, Mozhde. "Optimization of electrostatic sensor based on sensor separation." Sensor Review 39, no. 5 (2019): 724–32. http://dx.doi.org/10.1108/sr-06-2018-0158.

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Purpose Electrostatic sensors are applied to measure velocity of solid particles in many industries because controlling the velocity particles improves product quality and process efficiency. The purpose of current paper is optimization of these sensors which is required to achieve maximum spatial sensitivity and minimum statistical error. Design/methodology/approach Different electrode of electrostatic sensors with different length, thickness and sensor separations were experimentally applied in laboratory. Then, correlation velocity, signal bandwidth and statistical error were calculated. Findings High sensor separation is a crucial factor because it would lead to increase signal similarity and decrease statistical error. This paper focuses on the effect of sensor separation on optimization of electrostatic sensors. Originality/value From observations, the optimal value for length, thickness and sensor separations was 0.6, 0.5 and 15 cm, respectively. Consequently, statistical error has improved by about 17 per cent. These results provided a significant basis of optimization of electrostatic sensors.
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2

Bamba, Noriko, N. Endo, T. Takagi, and Tatsuo Fukami. "Pressure Sensing Using Electrostatic Capacitance." Key Engineering Materials 317-318 (August 2006): 865–68. http://dx.doi.org/10.4028/www.scientific.net/kem.317-318.865.

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Piezoelectric ceramic pressure sensors have been attracted great interest due to their simple and miniature structure compared with conventional sensors such as strain gauge sensor. A new type of static pressure sensor by using a change of permittivity upon applied mechanical pressure has been studied in this work. BaTiO3 ceramics with/without a small amount of Mn were used as sensing materials and the effect of poling treatment on their sensor performance was investigated. An anti-ferroelectric material, NaNbO3, was also examined. All materials could detect the change of pressure through the frequency shift of CR oscillator. Change of permittivity of non-doped BaTiO3 and Mn doped BaTiO3 without poling treatment were larger than that of PZT used as a reference, that is, BaTiO3 ceramics had higher-pressure sensitivity. BaTiO3 and relative materials, however, needed transit time to reach the steady state, while NaNbO3 was independent to the time. Conclusively, it seems that BaTiO3 and relative materials without poling treatment and the anti-ferroelectric material, NaNbO3, become possible candidates as a pressure sensor using permittivity change.
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3

Ruochen, L. I. U., B. E. I. Shaoyi, G. U. Meng, W. A. N. G. Han, and S. U. N. Jianzhong. "Research on Characteristics of Electrostatic Wear-Site and Oil-Line Sensor with Theoretical and Comprehensive Analysis." Journal of Sensors 2022 (February 26, 2022): 1–11. http://dx.doi.org/10.1155/2022/9188776.

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As a unique monitoring technique, electrostatic monitoring has been proved to be effective on prognostics and health management of tribological system by using electrostatic sensors. Wear-site sensor (WSS) with a flat circle probe and oil-line sensor (OLS) with a ring probe are two typical sensor types for electrostatic monitoring. However, this developing technique has not been applied in actual industry manufacture so far due to the united characteristics on electrostatic sensors. This paper first presents the mathematical models of both WSS and OLS for theoretical simulation. Then a series of contrast analysis on sensor characteristics between WSS and OLS with varied sensor structure parameters are presented. The results show that the distributions of spatial sensitivity for WSS or OLS itself only are similar, while they are quite different between WSS and OLS. Both WSS and OLS are symmetrical and their distributions can be simplified in one phase for further investigations. The theoretical efficiency curves have close relationship between WSS and OLS. The investigations of sensor performances on characteristics and a presented unified three level system have offered a better electrostatic sensor application in future.
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4

Tang, Xin, Zheng Hu, Zhong Sheng Chen, and Yong Ming Yang. "Investigation into Spatial Sensitivity of Probe-Type Electrostatic Sensors for On-Line Condition Monitoring of Heat Engines." Applied Mechanics and Materials 437 (October 2013): 817–22. http://dx.doi.org/10.4028/www.scientific.net/amm.437.817.

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Probe-type electrostatic sensors provide a novel and applicable way to realize on-line condition monitoring of heat engines. However, researches on this type of electrostatic sensors are still scanty, especially needs more detailed studies for the sensors sensing characteristics. In this paper, a simulative 3-D model with high fidelity was established using COMSOL, by which a detailed research on probe-type electrostatic sensors spatial sensitivity was conducted, the whole spatial sensitivity distribution on the centre section and conclusions about the influencing factors of spatial sensitivity were acquired. The simulative results were confirmed by experiments, and can be used for optimal design of probe-type electrostatic sensors.
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5

Office, Editorial. "Kompensasie vir die invloed van die elektriese veldsterkte op die bepaling van die bewegingshoek van ’n vliegtuig." Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 17, no. 3 (1998): 118–20. http://dx.doi.org/10.4102/satnt.v17i3.701.

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During flight large voltage differences can develop between isolated sensors on the wingtips of an aircraft. This is as a result of charge differences in the atmosphere under the influence of the earth's electrostatic field. These charge differences can be utilised for aircraft attitude measurements. An electrostatic sensor has been developed to measure these charge differences.
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Yan, Yong, Yonghui Hu, Lijuan Wang, et al. "Electrostatic sensors – Their principles and applications." Measurement 169 (February 2021): 108506. http://dx.doi.org/10.1016/j.measurement.2020.108506.

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7

Tan, Xiangyu, Hao Sun, Chunguang Suo, Ke Wang, and Wenbin Zhang. "Research of electrostatic field measurement sensors." Ferroelectrics 549, no. 1 (2019): 172–83. http://dx.doi.org/10.1080/00150193.2019.1592558.

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8

Peng, Jun, Shuhai Jia, Jiaming Bian, Shuo Zhang, Jianben Liu, and Xing Zhou. "Recent Progress on Electromagnetic Field Measurement Based on Optical Sensors." Sensors 19, no. 13 (2019): 2860. http://dx.doi.org/10.3390/s19132860.

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Electromagnetic field sensors are widely used in various areas. In recent years, great progress has been made in the optical sensing technique for electromagnetic field measurement, and varieties of corresponding sensors have been proposed. Types of magnetic field optical sensors were presented, including probes-based Faraday effect, magnetostrictive materials, and magnetic fluid. The sensing system-based Faraday effect is complex, and the sensors are mostly used in intensive magnetic field measurement. Magnetic field optical sensors based on magnetic fluid have high sensitivity compared to that based on magnetostrictive materials. Three types of electric field optical sensors are presented, including the sensor probes based on electric-optic crystal, piezoelectric materials, and electrostatic attraction. The majority of sensors are developed using the sensing scheme of combining the LiNbO3 crystal and optical fiber interferometer due to the good electro-optic properties of the crystal. The piezoelectric materials-based electric field sensors have simple structure and easy fabrication, but it is not suitable for weak electric field measurement. The sensing principle based on electrostatic attraction is less commonly-used sensing methods. This review aims at presenting the advances in optical sensing technology for electromagnetic field measurement, analyzing the principles of different types of sensors and discussing each advantage and disadvantage, as well as the future outlook on the performance improvement of sensors.
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9

Aranguren, D., J. López, E. Pérez, J. Herrera, L. Aragón, and H. Torres. "Operational analysis of electric field mills as lightning warning systems in Colombia." Ingeniería e Investigación 31, no. 2SUP (2011): 51–57. http://dx.doi.org/10.15446/ing.investig.v31n2sup.25211.

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Electrostatic field measurements taken in Bogotá, Colombia, during thunderstorms in November (the rainy season due to inter-tropical confluence zone over central Colombia) were used to study the performance of an isolated electric field sensor and analyse its most important operational characteristics. The distances from each flash to the studied sensor were obtained by using the Colombian lightning location system. The ΔE cf distance ratio led to defining a charge model which could be used as a reference for calibrating other electrostatic field sensors to be used as lightning warning systems.
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10

Krakover, Naftaly, B. Robert Ilic, and Slava Krylov. "Micromechanical resonant cantilever sensors actuated by fringing electrostatic fields." Journal of Micromechanics and Microengineering 32, no. 5 (2022): 054001. http://dx.doi.org/10.1088/1361-6439/ac5a61.

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Abstract We report on the architecture and operational principle of a resonant cantilever-type displacement sensor. The device is actuated electrostatically by a side electrode that is coplanar with the cantilever and by a gap-closing electrode positioned underneath the beam. The unique electrode geometry combined with the appropriate actuating voltages allows positioning of the cantilever in close proximity to the bistability threshold, where the frequency sensitivity to the electrode displacement is enhanced. Using a reduced order model backed by numerical simulations, the dependencies of the device frequency on the beam’s deflections and the actuation voltages were mapped. We show wide-range tunability that spans a range between softening and hardening behavior. We demonstrate displacement sensing using fabricated single crystal silicon ≈2000 µm long, ≈5 µm thick cantilevers. When compared to a resonant cantilever sensor actuated solely by a gap-closing electrode, measurements from our fringing field actuated devices show a four times higher sensitivity of ≈98 Hz µm−1. The suggested approach may find applications in a broad range of micro and potentially nano-scale applications including resonant inertial, force, mass and bio-sensors.
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