Electromagnetic Analysis and Validation of an Ironless Inductive Position Sensor

Danisi, Alessandro; Masi, A.; Losito, R.; Perriard, Yves

doi:10.1109/tim.2012.2224274

Cited by 30 publications

(23 citation statements)

References 14 publications

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“…Nevertheless, the high-frequency phenomena due to skin and proximity effects have been neglected. This qualifies the electromagnetic model in [17]- [18] as a lowfrequency analysis.…”

Section: Introductionmentioning

confidence: 82%

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Modeling of High-Frequency Electromagnetic Effects on an Ironless Inductive Position Sensor

et al. 2013

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The Ironless Inductive Position Sensor (I2PS) is a 5coil air-cored structure which senses the variation of flux linkage between supply and sense coils and relates it to the linear position of a moving coil. In air-cored structures, the skin and proximity effect can bring to substantial variations of the electrical resistance, leading to important deviations from the lowfrequency functioning. In this paper, an analysis of the effect of high-frequency phenomena on the I2PS functioning is described.The key-element is the modeling of the resistance as function of the frequency, which starts from the analytical resolution of Maxwell's equations in the coil's geometry. The analysis is validated by means of experimental measurements on custom sensor coils. The resulting model is integrated with the existing low-frequency analysis and represents a complete tool for the design of an I2PS sensor, framing its electromagnetic behavior.

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“…Nevertheless, the high-frequency phenomena due to skin and proximity effects have been neglected. This qualifies the electromagnetic model in [17]- [18] as a lowfrequency analysis.…”

Section: Introductionmentioning

confidence: 82%

“…The electromagnetic model of the I2PS, that explains the working principle and demonstrates the magnetic immunity from a theoretical viewpoint, has been described and validated in [17]- [18]. Nevertheless, the high-frequency phenomena due to skin and proximity effects have been neglected.…”

Section: Introductionmentioning

confidence: 99%

Modeling of High-Frequency Electromagnetic Effects on an Ironless Inductive Position Sensor

et al. 2013

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“…When the No.1 coil is on the track, and No.2 and No.3 are not on the track, we judge that the vehicle is on the straight, when the microcontroller will let the vehicle go straight [12].When the vehicle goes straight, microcontroller drive the motor to ensure that the four-wheel speed would maintain the same. Position is shown in Fig.…”

Section: Tracking Algorithmmentioning

confidence: 99%

Automatic Vehicle Tracking System Based on Inductance Sensor

Cai¹,

Guo²,

Wang³

2017

Proceedings of the 7th International Conference on Education, Management, Information and Mechanical Engineering (EMIM 2017)

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Abstract. Automatic vehicle tracking system based on inductance sensor was designed. This system uses inductive sensor for data acquisition controlled by STM32 microcontroller. The vehicle is made up of L298N motor drive module, geared motor module, buzzer sound module, LCD module, encoder module, bluetooth module, and battery module, and in order to change direction and speed by DC motor, its four-wheel drive vehicle can output variable pulse signals. Microcontroller continually scans four-channel data of LDC1614 and controls vehicle to complete tracing action. If an obstacle is detected by it, the buzzer module will make a sound prompts. The precise timing can be obtained by the timer module, and the encoder module is designed to measure the speed of the vehicle. The designed system can implement the function of real-time display of time and distances, and has high precision and low power consumption.

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“…As a result, the percentage change in sensing coil output due to the target would be much less, when compared with a nonmagnetic core. In addition, adding a core brings nonlinearity in sensor output [11], [20]. The features of the final IPS (modified v e3 ) are given in Table I.…”

Section: Design Of the New Ipsmentioning

confidence: 99%

A New Inductive Proximity Sensor Based Guiding Tool to Locate Metal Shrapnel During Surgery

Sakthivel

George

Sivaprakasam

2014

IEEE Trans. Instrum. Meas.

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Shrapnel injury is a major cause of death in victims of bomb blast, land mines, and gun fire. Currently, doctors rely on imaging systems to locate the shrapnel before surgery. But, since these images do not provide any real-time information of the location of the shrapnel, effectiveness of surgery solely depends on the doctors' skill to trace them. Therefore, in some cases, the shrapnel, in spite of being visible in the images, may become untraceable during surgery. Hence, an online tool that can help the surgeon in finding the location of the shrapnel during the surgery will be very effective. A prototype of such a tool has been realized using an inductive proximity sensor (IPS). The new IPS is small enough for inserting into the victim's body. Since the detection depth (DD) of an IPS decreases with its diameter, this IPS uses a differential sensing scheme for detection. Hence, the new sensor achieves DDs longer than its diameter. The design of the sensor takes care of the effects of parasitic parameters that become predominant as the size gets smaller and ensures repeatable results. The tool also features a special excitation scheme that has multiple advantages when compared with existing schemes. The details of the sensor, its excitation and performance against different targets under various conditions are presented in this paper.

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Electromagnetic Analysis and Validation of an Ironless Inductive Position Sensor

Cited by 30 publications

References 14 publications

Modeling of High-Frequency Electromagnetic Effects on an Ironless Inductive Position Sensor

Modeling of High-Frequency Electromagnetic Effects on an Ironless Inductive Position Sensor

Automatic Vehicle Tracking System Based on Inductance Sensor

A New Inductive Proximity Sensor Based Guiding Tool to Locate Metal Shrapnel During Surgery

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