Abstract: An external field response distribution visualization device includes: an induction circuit that induces a first field component from each of induction positions; a sensor that senses a field strength at sensing positions for each of the induction positions; and an information processing circuit that generates an image showing an external field response distribution. The information processing circuit: calculates, using the sensing result as a boundary condition, an induction position dependent field function that takes an induction and sensing positions as inputs and outputs the field strength; calculates an imaging function that takes an imaging target position as an input and outputs an image intensity, and is defined based on the strength output from the induction position dependent field function in response to inputting the imaging target position; and generates the image based on the imaging function.

Abstract: The inspecting device is an inspecting device that generates a spatial distribution image of an electric field, the inspecting device including: an electric field obtainer that measures the spatial distribution of the electric field at at least one measurement position determined relative to a scanning position, outside an object that emits the electric field; a scanner, by scanning the electric field obtainer, that obtains a measurement result of the spatial distribution of the electric field at a plurality of measurement positions determined relative to a plurality of scanning positions; and a calculator that calculates the spatial distribution of the electric field in a region including a surface of the object using the measurement result of the spatial distribution of the electric field as a boundary condition, and generates the spatial distribution image that shows the spatial distribution that has been calculated.

Abstract: A magnetic response distribution visualization device includes: an induction circuit that induces a magnetic field component from outside a moving object; a sensor that senses a strength and a phase of the magnetic field at a plurality of points in times outside the moving object; and an information processing circuit that, based on a sensing result of the strength and the phase, a moving speed of the moving object, and a fundamental equation for magnetic fields, calculates a strength and a phase of the magnetic field at a vicinal position closer to the moving object than the sensor, and generates, based on a calculation result of the strength and the phase, a magnetic response distribution image for security inspection that shows a distribution of a response of the moving object to the magnetic field component induced by the induction circuit.

Abstract: A storage battery inspection device includes: an energy storage control circuit that applies an alternating current to a storage battery; a magnetic sensor that senses a magnetic field component outside the storage battery and outputs a magnetic sensor signal indicating the sensed component; a canceling coil that generates a magnetic field component based on an input current to cancel out a magnetic field component generated by magnetization of a magnetic material in the storage battery; a feedback circuit that obtains, from the magnetic sensor signal, a low-frequency signal indicating a magnetic field component having a lower frequency than the alternating current, and applies the input current to the canceling coil based on the low-frequency signal; and a detection circuit that obtains, from the magnetic sensor signal, a detection signal indicating a magnetic field component having the same frequency as the alternating current.

Abstract: A magnetic response distribution visualization device includes: an induction circuit that induces a magnetic field component from outside a moving object; a sensor that senses a strength and a phase of the magnetic field at a plurality of points in times outside the moving object; and an information processing circuit that, based on a sensing result of the strength and the phase, a moving speed of the moving object, and a fundamental equation for magnetic fields, calculates a strength and a phase of the magnetic field at a vicinal position closer to the moving object than the sensor, and generates, based on a calculation result of the strength and the phase, a magnetic response distribution image for security inspection that shows a distribution of a response of the moving object to the magnetic field component induced by the induction circuit.

Abstract: An external field response distribution visualization device includes: an induction circuit that induces a first field component from each of induction positions; a sensor that senses a field strength at sensing positions for each of the induction positions; and an information processing circuit that generates an image showing an external field response distribution. The information processing circuit: calculates, using the sensing result as a boundary condition, an induction position dependent field function that takes an induction and sensing positions as inputs and outputs the field strength; calculates an imaging function that takes an imaging target position as an input and outputs an image intensity, and is defined based on the strength output from the induction position dependent field function in response to inputting the imaging target position; and generates the image based on the imaging function.

Abstract: A storage battery inspection device includes: an energy storage control circuit that applies an alternating current to a storage battery; a magnetic sensor that senses a magnetic field component outside the storage battery and outputs a magnetic sensor signal indicating the sensed component; a canceling coil that generates a magnetic field component based on an input current to cancel out a magnetic field component generated by magnetization of a magnetic material in the storage battery; a feedback circuit that obtains, from the magnetic sensor signal, a low-frequency signal indicating a magnetic field component having a lower frequency than the alternating current, and applies the input current to the canceling coil based on the low-frequency signal; and a detection circuit that obtains, from the magnetic sensor signal, a detection signal indicating a magnetic field component having the same frequency as the alternating current.