A rotational angle sensor device and a corresponding method are provided. Two signals which have a phase offset with respect to one another are generated based on a modulated magnetic field using a sensor arrangement. Three signals which have a phase offset with respect to one another are generated from the signals.

An electromechanical sensor and a method of sensing an object or a tactile input using the sensor. The sensor includes: a base provided with a magnetic sensor arranged to detect a change in magnetic flux at the position of the magnetic sensor; a flexible film adjacent to the magnetic sensor; and a magnetic element provided on the flexible film; wherein the magnetic element is arranged to move relative to the magnetic sensor when the flexible film is reversibly deformed by an external force applied to the flexible film.

A magnetic measuring apparatus includes at least one magnetic sensor, a coil, a driving circuit configured to supply a current to the coil, a conductor electrically connecting the coil and the driving circuit, and a computing device which estimates relative positions of the magnetic sensor and the coil based on a magnetic field generated by the current supplied to the coil and detected by the magnetic sensor. The magnetic sensor has a magnetic detection sensitivity in a particular direction, and the particular direction of the magnetic sensor and a current vector of the current flowing through the conductor are parallel.

A magnetic field sensor package comprises a chip carrier, a magnetic field sensor which is arranged on the chip carrier and designed to detect a magnetic field, an integrated circuit which is arranged on the chip carrier and designed to logically process sensor signals provided by the magnetic field sensor, and at least one integrated passive component which is electrically coupled to at least one of the magnetic field sensor or the integrated circuit.

The present invention relates to a method for locating an object (1) integral with a triaxial magnetic sensor (2) moving in a magnetic field generated by a set of at least three triaxial magnetic generators (3) static in a common reference frame, the method being characterised in that it includes the steps of: (a) For each generator (3) determining as a function of magnetic field measurements acquired by the sensor (2) and associated with said generator (3) a position of said sensor (2) in said common reference frame; (b) Calculating for each generator (3) a parameter representative of an error on said determined position of the sensor (2) for the generator (3); (c) Selecting a sub-set of the set of generators (3) as a function of said parameters estimated for each of the generators (3) said selected sub-set of the set of generators (3) including each generator (3) for which said estimated parameter is less than at least one reference threshold; (d) Estimating the position of the object (1) by merging the determined positions of the sensor (2) for each generator (3) selected in said sub-set.

Magnetic couplers and sample introduction devices including them are described. In certain configurations, a sample introduction device can include a magnetic coupler that can be used to hold down a sampling device to permit introduction of an analyte sample from the sampling device to an instrument or another component. Systems including the magnetic couplers, and methods and devices to produce them are also described.

A method for calculating a position or an angle of an inspection target based on a sine wave signal and a cosine wave signal output from an encoder or a laser interferometer, includes acquiring a temporary movement speed of the inspection target, calculating an amplitude correction value corresponding to the temporary movement speed using information representing a relationship between a movement speed of the inspection target and amplitudes of the sine wave signal and the cosine wave signal acquired in advance, correcting the amplitudes of the sine wave signal and the cosine wave signal using the amplitude correction value, and calculating an offset error in a Lissajous waveform using the sine wave signal and the cosine wave signal the amplitudes of which are corrected with the amplitude correction value and calculating the position or the angle of the inspection target using the offset error.

Sensing systems, devices and methods are disclosed for determining the relative movement of first and second members of a medication delivery device which are proportional to the amount of a dose set and/or delivered by operation of the medication delivery device. A sensor is coupled with the first member. A pair of targets is coupled with the second member. Each target comprises an array of teeth which move through an area sensed by the sensor. The sensor thereby detects characteristic values of a sensed parameter corresponding to the combined relative positions of the first and second members. The sensing system outputs this information to a processor which determines the amount of the dose set and/or delivered. Related medication delivery devices and methods are also disclosed.

The present invention relates to a rotation detection apparatus configured to detect a rotation state of a gear based on a magnetic field change that occurs as the gear is rotated. The rotation detection apparatus includes: a first sensor portion and a second sensor portion each having a magnetic detection element and a covering member configured to cover the magnetic detection element; one permanent magnet arranged between the first sensor portion and the second sensor portion; and a housing portion configured to accommodate the first sensor portion, the second sensor portion and the permanent magnet.

A system includes a magnet for forming a magnetic field and a sensor between the magnet and an object having a circumferential surface. The object rotates around a rotation axis direction of the circumferential surface and displaces along the rotation axis direction, and an interaction between the magnet and a recess or projection portion of the circumferential surface of the object is configured to induce the magnetic field. The sensor outputs a first signal proportional to a first magnetic flux density in the rotation axis direction at a predetermined time, outputs a second signal proportional to a second magnetic flux density in a direction perpendicular to the circumferential surface of the object at the predetermined time, calculates an angle based on the first and the second magnetic flux density, and output a third signal proportional to the angle based on the first and the second magnetic flux density.