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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.


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Patent
08 Apr 1980
TL;DR: In this article, a pair of non-linear amplifiers are interconnected so that the output of one amplifier is the input of the other amplifier, and an inductive sensor is connected between the outputs of the amplifiers.
Abstract: A device powered by a DC source produces an output signal the frequency of which changes as a function of changes in external magnetic fields sensed by such device. A pair of non-linear amplifiers are interconnected so that the output of one amplifier is the input of the other amplifier. An inductive sensor is connected between the outputs of the amplifiers. The inductive sensor has an elongated magnetic core and a coil is wound on the core. The voltages at the outputs of the amplifiers, across the inductive sensor, switch between zero and the full voltage of the DCisource.

1 citations

DOI
21 Feb 2005
TL;DR: In this article, a sensor consisting of a permanent magnet and a 500 kHz eddy current device is used to measure the distance between metal objects in harsh industrial applications, e.g. to determine the shape of a steel strip.
Abstract: In harsh industrial applications, it is often necessary to measure the distance between metal objects, e.g. to determine the shape of a steel strip. Due to the presence of hot steam, water and dirt, inductive sensors are typically used but they have to be recalibrated each time the target material is replaced or the sensor is moved laterally. This work investigates the use of the sensor system to reduce the effects of material property variations. This design also enables a lateral movement compensation algorithm to be applied, thus leading the way to a true target independent distance-measuring device. This paper investigates a novel method of compensating for the effects of material property variations on distance measurement using a sensor consisting of a permanent magnet and a 500 kHz eddy current device. This was achieved by producing empirical models for each of the sensor outputs. Results on steel samples transforming from the austenite to ferrite phase show that, for slow changing material variations of less than 3Hz, the error in the distance measurement can be reduced from 37% to less than 2%.

1 citations

Journal ArticleDOI
TL;DR: In this paper , the authors present theoretical background and experimental verification of thermal compensation method of inductive displacement sensor, which has the form of single-layer, coreless coil which is the inductance of a resonant LC circuit.

1 citations

Patent
03 Apr 2014
TL;DR: In this article, a wire curvature monitoring system for a semiconductor wire saw device is proposed, which includes a sensor array configured so as to be positioned to neighbor a wire of a wire saw, and includes at least one inductive sensor, a capacitive sensor, and a contact sensor.
Abstract: PROBLEM TO BE SOLVED: To provide a wire curvature monitoring system dedicated to a semiconductor wire saw deviceSOLUTION: The wire curvature monitoring system includes a sensor array configured so as to be positioned to neighbor a wire of a wire saw device The sensor array is adapted to detect wire curvature and includes at least one of an inductive sensor, a capacitive sensor, and a contact sensor

1 citations

Book ChapterDOI
01 Jan 2018
TL;DR: In this paper, a series resonant circuit with a sensor coil is proposed for future wheel speed applications in trucks based on a series of resonant circuits with a diameter smaller than 15 mm, which can cover the whole rotational speed range beginning at standstill but also the temperature range up to more than 200°C.
Abstract: A new sensor concept for future wheel speed applications in trucks based on a series resonant circuit with a sensor coil is proposed. This sensor is not only able to cover the whole rotational speed range beginning at standstill but also the temperature range up to more than 200°C. In addition a digital current interface, self-diagnosis-capability and additional information about airgap and temperature can be provided in order to enhance the reliability of the system. With this sensor concept it is possible to replace the currently used inductive sensors with rotational symmetry (TIM: Twist Insensitive Mounting) and a diameter smaller than about 15 mm. Additional electronics and signal processing are required to provide all capabilities mentioned above.

1 citations


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