Topic
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•
26 Mar 2020
TL;DR: In this article, an angle sensor for measuring an angle of rotation of the rotational position of a steering shaft (1, 11) of a motor vehicle in relation to a predefined starting position was proposed.
Abstract: The invention relates to an angle sensor (2) for measuring an angle of rotation of the rotational position of a steering shaft (1, 11) of a motor vehicle in relation to a predefined starting rotational position, wherein the angle sensor (2) is an inductive sensor having a carrier plate (4) that can be connected to the steering shaft (1, 11) for conjoint rotation and an attachable printed circuit board (6, 60) which is spatially fixed manner with respect to the carrier plate (4), wherein at least one electrically conductive track (7, 70, 71) is arranged on the carrier plate (4) and a scanning device (5) is arranged on the printed circuit board (6, 60) and has two coils (80, 81, 82, 83) that are part of a resonant circuit, and wherein the scanning device (5) is designed to scan the at least one electrically conductive track (7, 70, 71) to generate an angle-dependent sensor signal when the steering shaft (1, 11) is rotated.
Patent•
10 Jul 2020
TL;DR: In this article, a wide-range roughness contourgraph is revealed, which comprises a base, an inductive sensor, a sensor position adjusting mechanism, a guide rail mechanism and a driving mechanism.
Abstract: The invention discloses a wide-range roughness contourgraph which comprises a base, an inductive sensor, a sensor position adjusting mechanism, a guide rail mechanism and a driving mechanism. The guide rail mechanism and the driving mechanism are installed on the base, the driving mechanism is connected with the guide rail mechanism to drive the guide rail mechanism, the sensor position adjustingmechanism is installed at one end of the guide rail mechanism, the inductive sensor is installed on the sensor position adjusting mechanism, and a horizontal adjusting screw and two machine foot screws are installed at the lower end of the base. By arranging the novel guide rail and the sensor position adjusting mechanism, the stroke is large, the precision is high, the roughness and the certain profile tolerance are both considered, and meanwhile the cost is reduced; and after the guide rail is installed, three fixing points are formed among the guide rail, the guide rail base and the automatic pre-tightening adjusting device, so that the accuracy of the guide rail during left-right movement can reach 0.2 micron straightness required by design, and the measurement accuracy of the contourgraph is further ensured.
Patent•
06 Feb 2019
Patent•
31 May 1985
TL;DR: In this article, an effective-pressure inductive sensor is proposed for measuring the bending assumed by a membrane 6 along a reference direction 2 perpendicular to a midplane 7 of the latter.
Abstract: The present invention relates to an effective-pressure inductive sensor. This sensor comprises, inside a chamber 5 of a test body 1, partially delimited by a membrane 6 which is elastically flexible under the action of an external fluid pressure, means 40 for measuring the bending assumed by this membrane 6 along a reference direction 2 perpendicular to a mid-plane 7 of the latter; these means 40 comprise two magnetic sleeves 54 and 55 juxtaposed along a column 43 parallel to the reference direction 2 and solidly attached by one end to a central zone 31 of the membrane 6, and two simple inductors 76 and 77 placed around one respectively of the sleeves 54 and 55 and solidly attached to a support plate 64 with respect to which they are symmetrical to each other and which is itself carried by the body 1; for this purpose, means 70, 71 join the plate 64 to a zone 26 in the wall 8 of the body immediately next to the membrane 6; these means 70, 71 have characteristics of thermal expansion, along the reference direction 2, which are substantially identical to those of the column 43 in order to ensure coincidence of the mid-plane of the plate 64, and of the inductors 76 and 77, and with that of the column 43, which is also that of the sleeves 54 and 55, when the membrane 6 is balanced in pressure, and thus to ensure a compensation of the thermal drifts of the zero of the sensor.
07 Apr 2015
TL;DR: The presented sensor concept is completely autonomous and offers a cheap and flexible alternative to conventional sensors even on places not easy to access and without the need for maintenance.
Abstract: In this paper we present a low pressure sensor based on the Pirani principle. Conversely to conventional implementations, this novel concept employs a fully wireless approach for energy supply and readout of the sensor. The energy for the used heating element is harvested from conventional power supply lines. Furthermore, we used a fully passive sensor to measure the pressure value. Both parts together offer a flexible sensor concept which can solve current implementation drawbacks of size and wired connection to this kind of sensors. The presented sensor concept is completely autonomous and offers a cheap and flexible alternative to conventional sensors even on places not easy to access and without the need for maintenance. For the whole sensor system a simulation model is derived and the model is compared to measurements. The accuracy of the model for the autonomous sensor is shown over a large area of pressure.