A method is provided for determining at least one material characteristic of a magnetizable metal body by means of a micromagnetic sensor arrangement, which comprises at least one excitation coil having a magnetic core for signal excitation and at least one receiver. The body is magnetized by the sensor arrangement via current or voltage excitation of the sensor arrangement, which comprises at least one sign change between a positive part of a half-wave and a negative part of a half-wave. At least one signal is measured in the receiver, and the signal is Fourier transformed. The material characteristic are determined from at least one Fourier component. The excitation is turned off, and the post-oscillation of the signal is measured in the receiver. At least the part of the signal resulting from the post-oscillation in the Fourier transformation is used.

A tire wear measurement device, according to the present invention, detects a magnetic field of a magnetic body embedded in a tread portion of a tire and measures the degree of wear of the tire from a change in the magnetic field. The tire wear measurement device includes a first magnetic field detection portion placed at a position at which the magnetic field of the magnetic body can be detected, and a second magnetic field detection portion disposed at a position at which the intensity of the magnetic field of the magnetic body differs from the intensity at the position at which the first magnetic field detection portion is disposed.

A tire wear measurement device, according to the present invention, detects a magnetic field of a magnetic body embedded in a tread portion of a tire and measures the degree of wear of the tire from a change in the magnetic field. The tire wear measurement device includes a first magnetic field detection portion placed at a position at which the magnetic field of the magnetic body can be detected, and a second magnetic field detection portion disposed at a position at which the intensity of the magnetic field of the magnetic body differs from the intensity at the position at which the first magnetic field detection portion is disposed.

A chirality detector of the present invention for detecting chirality of chiral material, includes: a first electrode and a second electrode that are configured to apply a voltage to a subject containing the chiral material; a spin detection layer configured to be in contact with the subject; a power supply; and a control section. The power supply and the control section are configured to generate an electric field at the subject by applying the voltage between the first electrode and the second electrode. The control section is configured to detect a voltage generated in the spin detection layer in a direction that goes across a direction of the electric field or a voltage generated between the spin detection layer and the subject, and also is configured to detect chirality of the chiral material on the basis of the detected voltage.

A chirality detector of the present invention for detecting chirality of chiral material, includes: a first electrode and a second electrode that are configured to apply a voltage to a subject containing the chiral material; a spin detection layer configured to be in contact with the subject; a power supply; and a control section. The power supply and the control section are configured to generate an electric field at the subject by applying the voltage between the first electrode and the second electrode. The control section is configured to detect a voltage generated in the spin detection layer in a direction that goes across a direction of the electric field or a voltage generated between the spin detection layer and the subject, and also is configured to detect chirality of the chiral material on the basis of the detected voltage.

A magnetic body inspection method and magnetic body inspection apparatus (1) that has a magnet (10) and a magnetic sensor (20) that outputs electric signals. At least two electric signals are obtained by the magnetic sensor (20). A magnetic body present inside a nonmagnetic body can be detected non-destructively, by outputting the difference between the two obtained electric signals.

A sensing system includes a sensor mounted on a surface that is subjected to a load. The sensor is configured to detect a first field value related to the surface. A memory is configured to store information regarding the surface. A processor is coupled to the memory and in communication with the sensor. The processor is configured to determine a second field value based on the detected first field value and the information regarding the surface.

A sensing system includes a sensor mounted on a surface that is subjected to a load. The sensor is configured to detect a first field value related to the surface. A memory is configured to store information regarding the surface. A processor is coupled to the memory and in communication with the sensor. The processor is configured to determine a second field value based on the detected first field value and the information regarding the surface.

An apparatus for determining magnetic properties of a portion of a magnetizable endless belt. The apparatus includes a primary coil for generating a magnetic field. The windings of the primary coil are wound around the endless belt. A secondary coil measures the magnetic flux density. A slotted yoke guides the magnetic flux. The endless belt extends through slots in the yoke. First measuring devices measure the magnetic field in a width portion parallel to the endless belt. Second measuring devices measure the magnetic field in the width portion parallel to the endless belt.

An apparatus for determining magnetic properties of a portion of a magnetizable endless belt. The apparatus includes a primary coil for generating a magnetic field. The windings of the primary coil are wound around the endless belt. A secondary coil measures the magnetic flux density. A slotted yoke guides the magnetic flux. The endless belt extends through slots in the yoke. First measuring devices measure the magnetic field in a width portion parallel to the endless belt. Second measuring devices measure the magnetic field in the width portion parallel to the endless belt.