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Inductive sensor

About: Inductive sensor is a research topic. Over the lifetime, 2282 publications have been published within this topic receiving 21984 citations.


Papers
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Patent
09 Nov 2016
TL;DR: In this article, an inductance-type displacement sensor circuit which comprises a DC voltage stabilizing circuit, a square-wave generator, an inductive sensor, a demodulator, a differential amplifier, a V / I conversion circuit, an A / D conversion circuit and an LED display circuit is sequentially connected.
Abstract: The application discloses an inductance-type displacement sensor circuit which comprises a DC voltage stabilizing circuit, a square-wave generator, an inductive sensor, a demodulator, a differential amplifying circuit, a V / I conversion circuit, an A / D conversion circuit and an LED display circuit which are sequentially connected. The DC voltage stabilizing circuit is connected to a commercial power supply of 220V; the DC voltage stabilizing circuit supplies power for the whole circuit; and the square-wave generator generates a square-wave voltage and supplies the square-wave voltage to the inductive sensor. The novel inductance-type displacement sensor circuit is high in detection precision and strong in anti-interference capability.

1 citations

DOI
01 Jan 2008
TL;DR: A flexible, passive wireless inductive sensor with micromachined variable inductors for telemetric applications and theoretical inductive responses of the developed device obtained through finite element analysis and their comparison with the measurement result are presented.
Abstract: This thesis reports a flexible, passive wireless inductive sensor with micromachined variable inductors for telemetric applications. The variable inductor is formed by folding coplanar dual spiral coil with 5-10 mm size that are microfabricated using 50-urn-thick copper-clad polyimide film commonly used for flex-circuit manufacturing. When folded, the two coils are aligned to each other where the mutual inductance depends on the gap between the aligned coils. The sensor can be combined with a variety of hydrogel materials for biomedical and chemical applications. A stimuli-responsive hydrogel element is sandwiched by the folded substrate to modulate the gap, or inductance of the device as it swells!deswells depending on the target parameter. The response of a variable inductor to the displacement of the coils is measured to be 0.40 nH/pin. A sensitivity of 71-110 ppm4tm in wireless frequency measurement is obtained using the passive resonant device that combines the variable inductor with a fixed capacitor created on the polyimide substrate. The fabricated devices are coupled with pHsensitive poly (vinyl alcohol)-poly (acrylic acid) hydrogel and a commercial wound dressing to experimentally demonstrate wireless monitoring of pH and moisture level within the dressing product, respectively. Theoretical inductive responses of the developed device obtained through finite element analysis and their comparison with the measurement result are also presented.

1 citations

Dissertation
10 Oct 2016
TL;DR: Programa Oficial de Doutoramento en Tecnoloxias da Informacion e Comunicacion en Redes Mobiles, impulsada por el gobierno de Estados Unidos.
Abstract: Programa Oficial de Doutoramento en Tecnoloxias da Informacion e Comunicacion en Redes Mobiles. 553V01

1 citations

Patent
15 Jun 2016
TL;DR: In this paper, a monitoring device for a settlement cavity value of a medium-low-speed magnetic suspension low track bearing-rail beam and a roadbed is presented, where data reading is conducted outside a closed loop of the roadbed and prevented from being influenced by the closed loop, the large transportation load of a train, and track panel space limitation of the bearing-beam rail bottom slab.
Abstract: The invention discloses a monitoring device for a settlement cavity value of a medium-low-speed magnetic suspension low track bearing-rail beam and a roadbed. The monitoring device comprises an inductive strainometer and an inductive sensor testing instrument. The inductive strainometer comprises a ground anchor threaded steel bar set, a lower flange plate, an induction coil, an upper flange plate, an anchor plate and a magnet. The roadbed can drive the induction coil to settle synchronously when settlement happens. A bearing-rail beam bottom slab can drive the magnet to settle synchronously when settlement happens. When the settlement generated by the roadbed is different from the settlement generated by the bearing-rail beam bottom slab, the magnet and the induction coil cut each other to generate currents, and therefore the settlement difference value of the bearing-rail beam bottom slab and the roadbed can be obtained through the inductive sensor testing instrument. According to the monitoring device, data reading is conducted outside a closed loop of the roadbed and prevented from being influenced by the closed loop, the large transportation load of a train, and track panel space limitation of the top of the bearing-rail beam, and the settlement difference value between the bearing-beam rail bottom slab and the roadbed can be observed and measured at any time.

1 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202321
202242
202140
202082
201997
201871