364results about "Magnetic sensor arrays" patented technology

An apparatus including a controller, a workpiece transport in communication with the controller having a movable portion and a transport path, and a multi-dimensional position measurement device including at least one field generating platen attached to the movable portion and at least one sensor group positioned along the transport path and in communication with the controller, the field generating platen is configured for position measurement and propelling the movable portion, each sensor in the at least one sensor group is configured to provide but one output signal along a single axis corresponding to a sensed field generated by the at least one field generating platen and the controller is configured calculate a multi-dimensional position of the movable portion based on the but one output signal of at least one of the sensors in the at least one sensor group, the multi-dimensional position including a planar position and a gap measurement.

An angular position sensor (24) and method that relies on a stationary- circular array of Hall sensors (18) and a rotatable circular array of magnets (16) arranged about a common axis (22). A periodic and simultaneous reading of all of the Hall sensor outputs is used to determine angular velocity.

The invention discloses a magnetic resistance Z-axis gradient sensor chip which is used for detecting the gradients of components of a Z-axis magnetic field generated by magnetic media in the X-Y plane so as to conduct magnetic imaging on the magnetic media. The magnetic resistance Z-axis gradient sensor chip comprises a Si substrate, two or two groups of sets containing a plurality of flux leaders and magnetic resistance sensing units which are electrically connected, wherein the distance between the sets is Lg. The magnetic resistance sensing units are located on the Si substrate and located above or below the edges of the flux leaders, the components of the Z-axis magnetic field are converted into the mode that the components of the Z-axis magnetic field are parallel to the surface of the Si substrate and in the direction of the sensitive axes of the magnetic resistance sensing units, and the magnetic resistance sensing units are electrically connected into a half-bridge or whole-bridge gradient meter, wherein the distance between opposite bridge arms is Lg. The sensor chip can be used together with a PCB, a PCB and back magnetor a PBC and back magnet and packaging shell. According to the magnetic resistance Z-axis gradient sensor chip, measurement of the Z-axis magnetic field gradient is achieved by using plane sensitive magnetic resistance sensors, and the magnetic resistance Z-axis gradient sensor chip has the advantages of being small in size and low in power consumption, having higher magnetic field sensitivity than a Hall sensor and the like.

An array of optically pumped magnetometers includes an array of vapor cells; and an array of beam splitters. The array of beam splitters is arranged into columns, including a first column, and rows. Each row and each column includes at least two of the beam splitters. The array of beam splitters is configured to receive light into the first column of the array and to distribute that light from the first column into each of the rows and to distribute the light from each of the rows into a plurality of individual light beams directed toward the vapor cells.

A sensor assembly is provided for use in tracking a medical device. The sensor assembly comprises a magnetoresistance sensor capable of providing position and orientation information. In certain implementations, the magnetoresistance position and orientation sensor is originally configured for connection to a substrate using one type of interconnect approach but is modified to be connected using a different interconnect approach.

An angular position sensor and method that relies on a stationary circular array of Hall sensors and a rotatable circular array of magnets arranged about a common axis. A periodic and simultaneous reading of all of the Hall sensor outputs is used to determine angular velocity.

A single-chip high-intensity magnetic field X-axis linear magneto-resistance sensor provided with a calibration coil / reset coil comprises a high-intensity magnetic field single-chip reference bridge type X-axis resistance sensor and the calibration coil / reset coil, wherein the calibration coil is a planar coil, the reset coil is a planar or three-dimensional coil, the planar calibration coil and the planar reset coil can be located above a substrate and under a magneto-resistance sensing unit, between the magneto-resistance sensing unit and a soft magnetic flux guider, above the soft magnetic flux guider or at the gap position, the soft magnetic flux guider and the magneto-resistance sensing unit are winded with the three-dimensional rest coil, and the calibration coil and the reset coil respectively produce calibration magnetic fields parallel to pinning layer direction and even reset magnetic fields in free layer direction at the position of a magneto-resistance unit. Calibration and magnetic-state reset of the single-chip X-axis linear magneto-resistance sensor can be achieved by controlling the current of the calibration coil / reset coil, and the single-chip high-intensity magnetic field X-axis linear magneto-resistance sensor ahs the advantages of being efficient, quick to use and convenient to operate.