A Magnetic Particle Imaging (MPI) system with a magnet configured to generate a magnetic field with a field free line, the magnet integrated with a flux return designed so that a flux path at approximately the center of the field-free line has a first reluctance and a second flux path distal from the center of the field-free line has a second reluctance, and the second reluctance is lower than the first reluctance to facilitate a high fidelity magnetic field and high fidelity field free line.

Position sensors, including linear position sensors, that utilize magnetic field(s) are disclosed. Disclosed sensors include flux emitters and sensor assemblys. The sensor assemblys include flux collectors that interact with magnetic fields from flux emitters and with a magnetism sensing device. Flux emitters have arrangements of magnets that when combined with the sensor assembly can provide a constantly increasing or a constantly decreasing signal across a range of relative movement.

Position sensors, including linear position sensors, that utilize magnetic field(s) are disclosed. Disclosed sensors include flux emitters and sensor assemblys. The sensor assemblys include flux collectors that interact with magnetic fields from flux emitters and with a magnetism sensing device. Flux emitters have arrangements of magnets that when combined with the sensor assembly can provide a constantly increasing or a constantly decreasing signal across a range of relative movement.

Provided is an information processing apparatus including: a calculation unit that calculates a terminal coordinate system magnetic vector on the basis of a spatial coordinate system magnetic vector and a posture of a communication terminal; and a notification unit that notifies the communication terminal of the terminal coordinate system magnetic vector by non-contact communication.

A position determination device comprises data input circuitry configured to obtain magnetic field sensor data sensed by a magnetic field sensor, detection circuitry configured to detect temporal variations of the magnetic field and to generate temporal variation information indicating the detected temporal variation of the magnetic field, and magnetic fingerprinting circuitry configured to determine a first position estimate of the sensor position by comparing the obtained magnetic field sensor data with a magnetic map comprising magnetic fingerprints of a region around the magnetic field sensor and using the generated temporal variation information.

A position determination device comprises data input circuitry configured to obtain magnetic field sensor data sensed by a magnetic field sensor, detection circuitry configured to detect temporal variations of the magnetic field and to generate temporal variation information indicating the detected temporal variation of the magnetic field, and magnetic fingerprinting circuitry configured to determine a first position estimate of the sensor position by comparing the obtained magnetic field sensor data with a magnetic map comprising magnetic fingerprints of a region around the magnetic field sensor and using the generated temporal variation information.

A measurement device applies a pulse current or a current of a plurality of frequencies to a laminated body having a plurality of layers having different electrical conductivities. The device acquires in-plane distribution information indicating distribution of a magnetic field of a first plane outside the laminated body. A processor generates three-dimensional magnetic field distribution information indicating a three-dimensional distribution of magnetic field on an outside of the laminated body based on the in-plane distribution information, and generates information on an inside of the laminated body by processing the three-dimensional magnetic field distribution information on the outside of the laminated body. The in-plane distribution information includes information indicating response characteristics to a change in the current applied by the current applying unit. In addition, the three-dimensional magnetic field distribution information on the outside of the laminated body includes frequency characteristics of the magnetic field.

A measurement device applies a pulse current or a current of a plurality of frequencies to a laminated body having a plurality of layers having different electrical conductivities. The device acquires in-plane distribution information indicating distribution of a magnetic field of a first plane outside the laminated body. A processor generates three-dimensional magnetic field distribution information indicating a three-dimensional distribution of magnetic field on an outside of the laminated body based on the in-plane distribution information, and generates information on an inside of the laminated body by processing the three-dimensional magnetic field distribution information on the outside of the laminated body. The in-plane distribution information includes information indicating response characteristics to a change in the current applied by the current applying unit. In addition, the three-dimensional magnetic field distribution information on the outside of the laminated body includes frequency characteristics of the magnetic field.

An electronic circuit triage device diagnoses functionality of various electronic circuits of an electronic device. The electronic circuit triage device detects whether an electronic circuit is functioning properly by measuring a magnetic field pattern associated with the electronic circuit and comparing the magnetic field pattern to an expected magnetic field pattern.

A magnetic sensor array includes non-packaged magnetic sensors disposed on a substrate. The non-packaged magnetic sensors can include bare dice, in one embodiment. In another embodiment, the magnetic sensors are formed directly on the substrate, such as by printing conductive traces on the substrate. In another embodiment, a magnetic sensor array includes a magnetic field converter configured to launch received magnetic fields along an axis corresponding to a magnetic sensor maximum sensitivity.

The invention relates to a method for examining a magnetic field source. In this case, the magnetic vector field emanating from the magnetic field source is detected in a first coordinate system and corresponding magnetic field data is generated. Furthermore, the geometrical body of the magnetic field source is geometrically detected in a second coordinate system and corresponding geometrical data is generated. Subsequently, the first and the second coordinate systems are transferred into a mutual coordinate system by means of a coordinate transformation and the magnetic field data and the geometrical data are combined within the mutual coordinate system in order to place the magnetic vector field of the magnetic field source and the geometrical body of the magnetic field source into a mutual positional relationship.