An absolute electromagnetic position encoder comprises a readhead and an absolute scale. The readhead comprises field generation and detection configuration and a readhead processor. The absolute scale comprises an active periodic signal pattern, an active absolute signal pattern, and timing and activation circuitry connected to the active signal pattern. During an energy transfer cycle, the timing and activation circuitry is configured to receive and store energy from the readhead. During a first signal generating cycle, the timing and activation circuitry is configured to drive the periodic spatially modulated signal generating element in order to generate first cycle spatially periodic signals in the first cycle field detector. During a second signal generating cycle, the timing and activation circuitry is configured to drive the first spatially modulated signal generating element in order to provide at least one corresponding second cycle signal in the readhead. The readhead processor is configured to determine an absolute position of the readhead relative to the absolute scale based on at least the second cycle signal and the first cycle spatially periodic signals.

A method for determining a position of a magnet assembly relative to an array of inductive elements arranged adjacent to a magnetically permeable material, the method involving: measuring electrical characteristics of each of one or more inductive elements of the array of inductive elements; and from information derived from the measured electrical characteristics of the one or more inductive elements of the array of inductive elements, determining the position of the magnet assembly relative to the array of inductive elements.

The invention discloses an in-cell inductive touch-control display substrate, an inductive touch-control screen and a touch-control display device. The in-cell inductive touch-control display substrate includes: a first electrode layer; a second electrode layer insulated from the first electrode layer to form an electric field; first electromagnetic inductive coils extending in the row direction and forming loops and second electromagnetic inductive coils extending in the column direction and forming loops, disposed in the same layer as the first electrode layer. The first electromagnetic inductive coils or the second electromagnetic inductive coils are broken into a plurality of electromagnetic inductive segments at the crossings of the first and second electromagnetic inductive coils. Bridge wires disposed in the same layer as the second electrode layer electrically connect the electromagnetic inductive segments of the first electromagnetic inductive coils or the second electromagnetic inductive coils.

A system may include a resistive-inductive-capacitive sensor, a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to at a plurality of periodic intervals, measure phase information associated with the resistive-inductive-capacitive sensor and based on the phase information, determine a displacement of a mechanical member relative to the resistive-inductive-capacitive sensor. The system may also include a driver configured to drive the resistive-inductive-capacitive sensor at a driving frequency and a driving amplitude, wherein at least one of the driving frequency and the driving amplitude varies among the plurality of periodic intervals.

To reduce the construction effort and also to make it smaller, the detector coil (6) is formed in the detector head (7) of a magnetostrictive position sensor (100) in a semiconductor chip (2), in which at the same time also the evaluation circuit (16) is formed and—if biased electrically and by means of direct current—also the then necessary separate bias coil (18).

An inductive angle sensor includes a stator component and a rotor component that is rotatable relative thereto about an axis of rotation. The rotor component has an inductive target with k-fold symmetry. The stator component has a first single pickup coil with k-fold symmetry and a second single pickup coil with the same k-fold symmetry. The first single pickup coil is rotated around the axis of rotation in relation to the second single pickup coil. The inductive target is stretched along a first axis that runs perpendicularly to the axis of rotation so that a contour outline, as seen in plan view, of the inductive target has an elliptical shape, and the first single pickup coil is stretched along a second axis that runs perpendicularly to the axis of rotation so that a contour outline, as seen in plan view, of the first single pickup coil has an elliptical shape.

An inductive sensor device has a coil arrangement and sensor electronics for determining a longitudinal position of an at least partially electrically conductive and/or magnetically polarizable object moveable at a distance from a device end face along a device sensitive axis. The arrangement has a substantially planar exciting coil for producing an alternating magnetic field for inducing eddy currents and/or magnetic polarization in the object and a first substantially planar receiving coil substantially parallel to and overlapping the exciting coil. The coils are substantially parallel to the end face. The sensor electronics determine at least one parameter of an exciting coil electrical signal, which is variable owing to an inductive backward effect of the object, at least one parameter of a voltage inducible in the at least first receiving coil based on this effect, and the longitudinal position from the determined signal parameter and the determined voltage parameter.

A magnetically responsive member is disposed on a rotating member along the circumference of the rotating member in such a manner that the magnetically responsive member rotates together with the rotating member, and the magnetically responsive member is formed in a line-shaped pattern varying cyclically in a rotational axis direction. A stator is disposed around the rotating member in a contactless manner, and the stator includes a primary coil wound around the rotating member, and a secondary coil forming a loop pattern of a plurality of cycles along the circumference of the rotating member. As the primary coil is AC-energized, an induced AC output signal corresponding to relative positions between the line-shaped pattern of the rotating member and the loop pattern of the secondary coil, which depend on a rotational position of the rotating member, is output from the secondary coil.

An object is to provide a magnetic sensor module that suppresses a size of a magnetic sensor chip while applying a uniform calibration magnetic field to a magneto-resistive element. Provided is a magnetic sensor module comprising an IC chip having a first coil; and a magnetic sensor chip that is disposed on a surface of the IC chip and includes a first magnetic sensor that detects magnetism in a direction of first axis, wherein a planar shape of the IC chip encompasses a planar shape of the magnetic sensor chip, and the first coil has a planar shape including three or more sides, and is, when seen in a cross section along at least one side of the planar shape, is formed so as to cover a region, in a direction of the one side, of the first magnetic sensor.

A sensor device for measuring a rotational position of an element that is rotatable about an axis of rotation includes a sender member emitting a magnetic field, a first receiving member formed by a first conductor and receiving the magnetic field, and a second receiving member formed by a second conductor and receiving the magnetic field. The first receiving member and the second receiving member are arranged within an annular ring segment having a period along a circumferential direction about the axis of rotation. The first conductor and the second conductor each define a plurality of loops. A shape of each of the loops follows in the circumferential direction a base function with half the period, the shape of only some of the loops deviates from the base function by a correction function.