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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
30 Apr 1980
TL;DR: In this paper, an electronic coin tester is used to distinguish valid coin types from a practically unlimited number of false coin types without unduly reducing the correct type acceptability range.
Abstract: In the electronic coin tester the tested coins pass between a primary alternating current coil and a secondary, so affecting the inductive coupling, is able to distinguish valid coins from a practically unlimited number of false coin types without unduly reducing the correct type acceptability range. The alternating voltage source supplying the primary coil contains a circuit enabling variation of the frequency and/or amplitude of the primary coil voltage during coin testing. Frequency variation may be continuous or by switching between two values. The coin testing is limited to the short period whilst the coin is between the primary and secondary coils using a three lever coil primary power switch actuated by the coin and magnetically coupled to a reed contact switch.

5 citations

Patent
19 Feb 2004
TL;DR: In this article, a linear sensor and coupling element are arranged on the opposite side of the pivot axle to the pedal, where the sensor is an inductive sensor and the coupling element is a linear coupling element.
Abstract: Motor vehicle accelerator pedal arrangement (1) has a pedal (5), pedal arm (4) and a housing (2, 3) on which the arm is mounted so that it pivots around an axle. A linear sensor has a sensor (13) and coupling element (9) with the sensor connected to the housing and the coupling element attached to the pedal arm. The sensor and coupling element are arranged on the opposite side of the pivot axle to the pedal. The linear sensor is an inductive sensor.

5 citations

Proceedings ArticleDOI
18 May 2004
TL;DR: In this article, an innovative approach for position, velocity and acceleration estimation using traditional inductive sensors such as LVDTs is described, which overcomes typical limits of traditional processing techniques, such as coherent demodulation or spectral analysis, implementing a least mean squares estimation of interesting variables.
Abstract: This paper describes an innovative approach for position, velocity and acceleration estimation using traditional inductive sensors such as LVDTs. These transducers have been considered thanks to their diffusions and performances; however, the same algorithm can be applied to any other kind of AC-excited sensor. It overcomes typical limits of traditional processing techniques, such as coherent demodulation or spectral analysis, implementing a least mean squares estimation of interesting variables. Some preliminary simulations have been conducted to evaluate algorithm functionalities. A working prototype, designed around a low-cost DSP from TI, has been realized to perform real world tests.

5 citations

Patent
10 Aug 1995
TL;DR: In this article, a movable contact on an arm is used to activate an external indicator to indicate overload or short circuit conditions, which activates an external sensor that responds to the contact.
Abstract: The switch has a movable contact [16] on an arm [15] that normally sits against a fixed contact [21]. The switch has two contact terminals [12,13] that are connected [23,28] to an arc extinguishing plate stack [24]. Operation of the movable contact is made by an electromagnetic actuator [18] with input from a bimetallic element [26] that responds to overload or short circuit conditions. Built into the terminal is an inductive sensor [30] that responds to the movable contact. This activates an external indicator.

5 citations

Patent
23 Apr 1996
TL;DR: In this article, a magnetic field sensor acting via an amplifier stage on a switching stage was used to make the commonly used approximation switch insensitive to intermittently occurring magnetic interference fields, such that the sensor returned the given output signal of the switching stage to the input of the amplifier stage for maintaining the given lead signal of a sensor stage.
Abstract: In order to make the commonly used approximation switch insensitive to intermittently occurring magnetic interference fields, such switch consisting of a magnetic field sensor (1) acting via an amplifier stage (2) on a switching stage (3), provision is made for a second sensor (4) reacting to such interference fields, said sensor, in its activated state, returning the given output signal of the switching stage (3) to the input of the amplifier stage (2) for maintaining the given lead signal of the sensor stage (magnetic field sensor 1), and thus preserving the functional state of the approximation switch present in the event of interference.

5 citations


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