Abstract: A coin-shaped detection object discriminating device may be used with a detection object in a coin shape, and the coin-shaped detection object discriminating device may include a passage through which the detection object is passed; a permanent magnet; and a magnetic sensor disposed opposite to the permanent magnet across the passage.

Abstract: A device for identifying an object to identify may include a passage through which the object passes; an exciting coil and a detection coil; a core body around which the exciting coil and the detection coil are wound; and a control unit to which the detection coil is connected. The core body may include a first core and a second core. An analog coil output signal may be input into the control unit, a signal level of the coil output signal rising if the identification object passes through the passage path. The control unit may obtain a signal value of the coil output signal and identify the object.

Abstract: A device for identifying an object to identify may include a passage through which the object passes; an exciting coil and a detection coil; a core body around which the exciting coil and the detection coil are wound; and a control unit to which the detection coil is connected. The core body may include a first core and a second core. An analog coil output signal may be input into the control unit, a signal level of the coil output signal rising if the identification object passes through the passage path. The control unit may obtain a signal value of the coil output signal and identify the object.

Abstract: A coin-shaped detection object discriminating device may be used with a detection object in a coin shape, and the coin-shaped detection object discriminating device may include a passage through which the detection object is passed; a permanent magnet; and a magnetic sensor disposed opposite to the permanent magnet across the passage.

Abstract: A magnetic sensor device may include a magnetic sensor element structured to detect a magnetic property of a medium. The magnetic sensor element may include a sensor core having a body part and one or a plurality of protruded part(s) which is protruded from the body part, an exciting coil which is wound around the sensor core, and a detection coil which is wound around the sensor core. The body part and the protruded part of the sensor core forms an open magnetic path, and a stepped part is formed on a side face of at least one piece of the protruded part.

Abstract: A magnetic sensor device may include an exciting coil; a detection coil which faces the exciting coil and is structured to detect an AC magnetic field generated by the exciting coil; an object arrangement space which is provided between the detection coil and the exciting coil; and a case member which covers an entire surrounding area for the detection coil and the exciting coil except a side facing the exciting coil in a surrounding area for the detection coil and except a side facing the detection coil in a surrounding area for the exciting coil. The case member may be made of nonmagnetic conductive metal.

Abstract: Provided is a magnetic sensor device that is capable of relaxing a sensitivity change due to the position of a sample to be inspected, even with a configuration wherein the sample to be inspected is disposed on the side of an exciting coil and a detecting coil. Specifically, in a magnetic sensor device, an exciting coil and a detecting coil are disposed with respect to a sample disposing space, and the detecting coil detects an alternating current magnetic field generated by the exciting coil. As the exciting coil, this magnetic sensor device is provided with a first exciting coil, which is disposed on one side of the sample disposing space, and a second exciting coil, which is disposed on the other side of the sample disposing space.

Abstract: A magnetic pattern detection device for use with a medium having at least one magnetic pattern of a plurality of types of magnetic patterns whose residual magnetic flux density and permeability are different on a basis of both of a level of residual magnetic flux density and a level of permeability may include a common sensor part structured to detect presence/absence of each of the plurality of types of magnetic patterns, and a signal processing section structured to extract a first signal corresponding to the level of the residual magnetic flux density and a second signal corresponding to the level of the permeability from a signal outputted from the sensor part.

Abstract: A magnetic pattern detection device for use with a medium having at least one magnetic pattern of a plurality of types of magnetic patterns whose residual magnetic flux density and permeability are different on a basis of both of a level of residual magnetic flux density and a level of permeability may include a common sensor part structured to detect presence/absence of each of the plurality of types of magnetic patterns, and a signal processing section structured to extract a first signal corresponding to the level of the residual magnetic flux density and a second signal corresponding to the level of the permeability from a signal outputted from the sensor part.

Abstract: The present invention provides an object sensor configured such that excitation coils (13c and 13d) and a detection coil (12) are separately disposed, and the detection is performed in accordance with the balance between the excitation coils (13c and 13d) in a pair, a residual variation amount after the impedance due to a DC resistance part and the like has been offset and removed is obtained at high sensitivity with excellent linearity while using a small core body (11), regardless of the impedance including a DC resistance part. Additionally, the object sensor to be used as an inlet sensor is located in an appropriate position on a more upstream side than the read/write position in an insertion direction of the IC card. A contact terminal portion of the IC card is sensed whereby to detect the validity of the card inserted into the apparatus from a card insertion slot.

Abstract: A displacement measuring device for detecting a relative position of an object by interposing the object between a set of at least two displacement sensors. The displacement sensor may comprise of a core body that includes a detection coil and a pair of excitation coils. The sensor may produce a differential output based on the balance of the magnetic flux between the excitation coils with satisfactory linearity and/or higher sensitivity, in which the impedance due to the DC resistance component or the like is removed.

Abstract: A magnetoresistive element may include an A-phase magnetoresistive pattern which outputs a signal, a B-phase magnetoresistive pattern which outputs another signal whose phase is different by 90° from a phase of the signal outputted from the A-phase magnetoresistive pattern, a first substrate on which the A-phase magnetoresistive pattern is formed, and a second substrate on which the B-phase magnetoresistive pattern is formed. At least one of the first and the second substrates may include a transparent substrate.

Abstract: A displacement sensor for sensing the relative position of an object to be detcted is provided. The displacement sensor includes a core body having a core center portion and core end portions that are continuously formed on both sides of the core center portion. Magnetizing coils and detecting coils are wound around the core body such that they are lined on an axis of the core body. One of the magnetizing coils and detecting coils is placed at the core center portion while the other ones of the magnetizing coils and detctin coils are placed at the core end portions in the axial direction. The width of the core end portions in the direction perpendicular to the axial direction of the core body is substantially the same and is smaller than the width of the core center portion.

Abstract: The present invention provides an object sensor configured such that excitation coils (13c and 13d) and a detection coil (12) are separately disposed, and the detection is performed in accordance with the balance between the excitation coils (13c and 13d) in a pair, a residual variation amount after the impedance due to a DC resistance part and the like has been offset and removed is obtained at high sensitivity with excellent linearity while using a small core body (11), regardless of the impedance including a DC resistance part. Additionally, the object sensor to be used as an inlet sensor is located in an appropriate position on a more upstream side than the read/write position in an insertion direction of the IC card. A contact terminal portion of the IC card is sensed whereby to detect the validity of the card inserted into the apparatus from a card insertion slot.

Abstract: The excitation coils 13c and 13d and the detection coil 12 are discretely disposed. The displacement sensors 10a to 10d, which are respectively constituted in such a manner that the detection is performed on the basis of the balance between the excitation coils 13c and 13d to obtain the remaining variation with satisfactory linearity and high sensitivity in which the impedance due to the DC resistance component or the like is cancelled and removed while using the small sized core body 11, are arranged so as to interpose the object 14 to be detected such as the rotary shaft between them. Therefore, the stable detecting operation can be realized with an inexpensive circuit regardless of the variation of the environmental temperature without using the conventional constant current circuit. The stable detection result can be obtained with the simple structure and the satisfactory detection sensitivity.

Abstract: A winding type magnetic sensor device includes a sensor core facing an object to be detected, an excitation coil wound around the sensor core, and a detection coil wound around the sensor core that defects a variation of magnetic flux corresponding to the object to obtain a detection signal for the object. A constant current drive circuit is provided that supplies a constant current to the excitation coil.

Abstract: The present invention provides for a metallic surface identifying sensor including: a magnetic pole portion for detection which shifts facing a surface of a magnetic body to be identified having an uneven shape wherein the distance from the surface to be identified changes along with the uneven shape while shifting; a reference magnetic pole portion which is placed across from a reference surface, wherein the distance from the reference surface to the magnetic pole portion is maintained approximately constant regardless of the shifting of the magnetic pole portion for detection in relation with the surface to be identified; magnetizing coils which are separately wound around the magnetic pole portion for detection and the reference magnetic pole portion to generate magnetic fluxes; and detecting coils which are separately wound around the magnetic pole portion for detection and the reference magnetic pole portion to detect the magnetic fluxes wherein the uneven shape of the surface to be identified of the met

Abstract: The present invention provides for a metallic surface identifying sensor including: a magnetic pole portion for detection which shifts facing a surface of a magnetic body to be identified having an uneven shape wherein the distance from the surface to be identified changes along with the uneven shape while shifting; a reference magnetic pole portion which is placed across from a reference surface, wherein the distance from the reference surface to the magnetic pole portion is maintained approximately constant regardless of the shifting of the magnetic pole portion for detection in relation with the surface to be identified; magnetizing coils which are separately wound around the magnetic pole portion for detection and the reference magnetic pole portion to generate magnetic fluxes; and detecting coils which are separately wound around the magnetic pole portion for detection and the reference magnetic pole portion to detect the magnetic fluxes wherein the uneven shape of the surface to be identified of the met

Abstract: A magnetic displacement sensor device includes a plurality of magnetic displacement sensors, each of the magnetic displacement sensors having at least one coil wound thereon, and a single common excitation oscillator connected to each of the coils wound on the respective magnetic displacement sensors. Each of the coils are excited at the same oscillatory frequency and in the same phase by the single common excitation oscillator.

Abstract: The present invention provides for a metallic surface identifying sensor including: a magnetic pole portion for detection which shifts facing a surface of a magnetic body to be identified having an uneven shape wherein the distance from the surface to be identified changes along with the uneven shape while shifting; a reference magnetic pole portion which is placed across from a reference surface, wherein the distance from the reference surface to the magnetic pole portion is maintained approximately constant regardless of the shifting of the magnetic pole portion for detection in relation with the surface to be identified; magnetizing coils which are separately wound around the magnetic pole portion for detection and the reference magnetic pole portion to generate magnetic fluxes; and detecting coils which are separately wound around the magnetic pole portion for detection and the reference magnetic pole portion to detect the magnetic fluxes wherein the uneven shape of the surface to be identified of the met