Inductive sensor

About: Inductive sensor is a research topic. Over the lifetime, 2282 publications have been published within this topic receiving 21984 citations.

Special intelligent circuit breaker for railway signal

Abstract: This is an intellective breaker for railway signal including a shell, control panel, electric elements and connecting card. The control panel is installed with power light, alarm light, reset button and shut off button. Electric elements include electromagnetic inductive sensor, CPU of control signal input and output, relay of NC point, human-machine communication set composed by power light, alarm light, shut off button and reset button, and working power. The NC point is linked to the main circuit of the electric elements crossing the sensor. In case of overloading, CPU automatically shut off power in different defer time according to sensor signals and alarm, then automatically resume power in defer.

Piston stroke sensor arrangement for a brake unit

Abstract: A piston stroke sensor arrangement for a brake unit includes a brake unit including a piston and a piston tube, and a proximity sensor supported on the brake unit. The proximity sensor may determine the location of the piston within the brake unit based on the position of the piston tube relative to the proximity sensor. The proximity sensor may be an inductive proximity sensor. A groove may be defined in an outer circumferential surface of the piston tube. When the brake unit is in a non-applied position, the proximity sensor may detect metal of the piston tube. When the brake unit is in an applied position, the proximity sensor may not detect the metal of the piston tube.

Reactive sub-nanometer displacement sensors: Advantages and limitations

Abstract: In this paper we present the results of an investigation on the performance of eddy-current and capacitive sensors for measuring very small displacements in the sub-nanometer range. The term “reactive sensor” is used as a generic name for inductive sensors (L) using the magnetic field, and capacitive sensors (C) using the electric field, to convert displacement into electrical signals. The need for an accurate displacement/position measurement in such extremely small scales as nanometers and picometers has increased significantly over the last few years. Application examples can be found in the high-tech industry, metrology, and space equipment. This study is based on our recent development results, as well as on the latest reports found in the literature. The goal of the paper is to analyze the commonalities between these two types of sensors, as well as the main performance differences and limitations which define the preferred choice for a specific application. The comparative assessment is done based on both theoretical analysis and experimental results. The main performance criteria used are: sensitivity, resolution, compactness, long-term stability, thermal drift, power efficiency. To the best of our knowledge, such a systematic comparison has not been done yet.

Intelligent timing running shoe and timing method of intelligent timing running shoe

Abstract: The invention provides an intelligent timing running shoe By means of the intelligent timing running shoe, the problem that in the prior art, timing running shoes are imprecise in timing is solved The intelligent timing running shoe comprises a pressure sensor, an angle sensor, a judgment module and an inductive sensor, wherein the pressure sensor is used for collecting the pressure on the running shoe when a user runs; the angle sensor is used for collecting the inclination angle of the running shoe when the user runs; the judgment module is used for judging whether or not the user starts running based on the inclination angle of the running shoe and the pressure on the running shoe, and if the user starts running, a timing start signal is emitted; the inductive sensor is used for receiving a destination induction line signal and emitting a timing end signal The intelligent timing running shoe has the advantages that timing can be precisely carried out from the start of running, timing of running automatically ends when a destination is reached, and timing is precise and convenient

Arrangement for detecting and evaluating current in conductor has core that contains sensor of current-induced magnetic field so as to act as screen for sensor against external magnetic fields

Abstract: The current sensor arrangement has a sensor (3) for detecting the magnetic field induced by the current, evaluation electronics (4) for the sensor signal and a current converter coil (2) enclosing the conductor section (1a) with an annular, high permeability core (5) for supplying power to the evaluation electronics. The core contains the sensor so as to act as a screen for the sensor against external magnetic fields.