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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
03 Aug 1998
TL;DR: In this paper, the authors provided a sensor system for detecting thermal radiation, comprising a substrate (15) and a plurality of sensor elements (10) on the substrate and at least one self-test device (53) is provided in order to generate heat, with the one or more sensor elements(10) can be heated.
Abstract: there is provided a sensor system for detecting thermal radiation, comprising a substrate (15) and a plurality of sensor elements (10) on the substrate (15), said at least one self-test device (53) is provided in order to generate heat, with the one or more sensor elements (10) can be heated. the sensor elements (10) can be heated in accordance with a typical time pattern during the self-testing process. are also indicated an advantageous preparation process for the sensor system and an advantageous design of the entire system including the signal processing.

5 citations

Journal ArticleDOI
TL;DR: The results of the monopole antenna make it an alternative remote sensor for plasma focus, but for the application of a miniaturized plasma focus as pulsed plasma thruster, the Vivaldi antenna is a more feasible design to replace the inductive diagnostic due to its compact design in comparison to the monopoles.
Abstract: A remote and non-invasive diagnostic of the plasma focus using antennas is presented in this work. The main motivation is the application of such diagnostic in a miniaturized plasma accelerator, based on the plasma focus architecture, as a cube satellite thruster. The evaluation of this proposal was carried out measuring a hundred of joules plasma focus operation simultaneously with the inductive measurement and antennas. Three different antennas tuned in the ultra high frequency range were tested: a monopole, Vivaldi and helical. The high frequency transients detected with the antennas were time correlated to the known inductive measurement features. The initial dielectric breakdown and later plasma pinch and subsequent disruption (i.e. the source of the propulsion) were identified to be the principal phenomena to be detected. Signal parameter correlations between the inductive sensor and the antennas showed that the pinch phenomena can be correlated with the antenna signals. Good correlation results were obtained with the monopole antenna when using peak value and signal energy parameter from the antenna transient. An improvement in the correlation results, for the helical and Vivaldi antennas, was obtained when calculating the frequency band energy. In this case, the Vivaldi antenna achieved the best results. The results of the monopole antenna make it an alternative remote sensor for plasma focus, but for the application of a miniaturized plasma focus as pulsed plasma thruster, the Vivaldi antenna is a more feasible design to replace the inductive diagnostic due to its compact design in comparison to the monopole.

5 citations

Proceedings ArticleDOI
01 Nov 2013
TL;DR: A comparative study between a sensor inductor built conventionally in the conventional manner with increased distance and sensor without ferrite, built with planar technology, based on IEC 60947-5-2 to perform measurements and standardization of tests plus a technical detail among the technologies mentioned.
Abstract: Inductive sensors are devices used widely in industry machinery and equipment and also the automation of industrial processes. With the advancement of technology type inductors built with planar microstrip or striplines, new devices have emerged as an inductor resonant element that does not require a ferrite, which was part of this hitherto fundamental for the construction of an inductive sensor. This fact makes such sensors have functioning electronics and characteristics relative to conventional devices. Thus a thorough analysis is needed so that we can determine what type of inductive proximity sensor more convenient for a particular application, either in factory floor automation or building machines. We will present a comparative study between a sensor inductor built conventionally in the conventional manner with increased distance and sensor without ferrite, built with planar technology, based on IEC 60947-5-2 to perform measurements and standardization of tests plus a technical detail among the technologies mentioned. This study will address the five main parameters to choose one or the other inductive. These parameters are measures of sensing distance, lateral and metal free zone, mutual interference, response time and finally switching frequency.

5 citations

Patent
29 Aug 2006
TL;DR: In this article, a multilayer printed wiring board proximity sensor is used to detect the proximity and presence of an object relative to the sensor, which can be either a variable-reluctance sensor or an eddy current loss sensor.
Abstract: A proximity sensor assembly includes a multilayer printed wiring board proximity sensor, the proximity sensor being operable as either a variable-reluctance sensor or an eddy current loss sensor. The proximity sensor includes a plurality of layers configured to form at least one wound coil disposed about at least a portion of a core. The coils are electrically driven to generate an alternating magnetic field such that the inductance of the coils changes when a permeable or conductive object is moved in relation to the magnetic field. The change in inductance is recognized and used to detect the proximity and presence of an object relative to the sensor.

5 citations

Patent
08 Jul 1993
TL;DR: In this article, a radio-controlled dispenser, for a gas medium, has a converter (5) between the receiver (3) and the output to process the control signal and control the output unit.
Abstract: The radio-controlled dispenser, for a gas medium, has a converter (5) between the receiver (3) and the output to process the control signal and control the output unit. The converter (5) is either in close optical, acoustic proximity to the inductive or capacitative field of the receiver and coupled accordingly, or is connected through a loudspeaker or headphones at the receiver. The receiver is pref. a TV set. The control signal for a mist delivery is an image pattern on the screen (11), to be detected by a photo-unit (13) at the converter (5). The control signal can be overlaid on the TV acoustic signal, with an acoustic or inductive sensor at the loudspeaker for the converter (5). The control signal can also be an acoustic pulse series, outside the audio range, or detectable at max. 3m from the TV receiver (3). The converter (5) is mechanically secured to the TV receiver (3) by a release fitting. The output unit is a TV remote control, on an inhaler. USE/ADVANTAGE - The appts. is for the delivery of a fragrant mist, or for the dispensing of a medicated mist. For TV instruction of children with breathing problems, breathing practice with an inhalation can be remotely controlled to the TV receiver. The dispenser system can be fitted to conventional TV sets, and is compatible with their operation.

5 citations


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