Integral Geometry Science Inc.

Kobe University

Kyoto University

Other

Shimadzu Coproation

Kenjiro Kimura

K-Theory Inc.

Kimura, Kenjiro

Noriaki Kimura

Hirofumi Yamada

Kazumi Matsushige

Kei Kobayashi

Shogo Suzuki

Yuki Mima

Masahiro Ohta

Noriaki Oyabu

Nobuo Satoh

Takashi Horiuchi

Shinichiro Ido

Akifumi Nakai

Fumitoshi Kimura

A scattering tomography device includes: a transmitting antenna that transmits radio waves into an interior of an object; a receiving antenna that receives, outside the object, scattered waves of the radio waves; and an information processing circuit that obtains measurement results over a plurality of days and generates a reconstructed image showing a persistent element inside the object based on the measurement results. The information processing circuit calculates a scattering field function for each of the measurement results, calculates a visualization function for each of the measurement results, generates intermediate images for the measurement results, and generates a reconstructed image by calculating a minimum value of an image intensity at each position in the intermediate images using a logical conjunction.

Scattering tomography device and scattering tomography method

An imaging device includes a transmitter row of transmitters that are aligned in a straight line and transmit a wave to a region, a receiver row of receivers provided at an interval from the transmitter row and alighted in a straight line parallel to the line of transmitters, and receiving the wave from the region, and an information processing circuit that derives an imaging function based on measurement data and a distance and using the imaging function to image the structure of a scatterer included in an object present in the region, the imaging function corresponding to a scattering field function relating to scattering of the wave, the measurement data being obtained by all or some combinations of the transmitters and the receivers, the distance being a distance between the straight line along which the transmitters are aligned and the different straight line along which the receivers are aligned.

Imaging device and imaging method

An air purification system includes a linear electrode that generates electromagnetic resonance; an electric field probe that measures the electric field intensity; and a controller that controls power supplied to the linear electrode. The controller adjusts the frequency of the power supplied to the linear electrode and the position at which the power is supplied to the linear electrode, to maximize an output value of a signal indicating the electric field intensity. Feedback control is performed to make the amount of ozone always constant, by monitoring the amount of ozone generated and adjusting the amplitude modulation of the power supplied, so that ozone necessary for decomposing viruses is generated but harmful nitrogen oxides are not generated as a result of applying, to gas molecules contained in influent gas, an energy that is at least the dissociation energy of oxygen molecules and no greater than the dissociation energy of nitrogen molecules.

Air purification system and protective clothing

A scattering tomography device includes: a transmitting antenna element that transmits radio waves into an object from outside; a receiving antenna element that receives, outside the object, scattered waves of the radio waves transmitted into the object; and an information processing circuit that generates an image of the interior of the object using measurement data indicating the scattered waves received by the receiving antenna element. The information processing circuit: derives, using the measurement data, a relational expression that satisfies an equation whose solution is a scattering field function; derives, using the relational expression, an image function that is for generating the image and includes one or more parameters indicating a correspondence between a change in frequency of the radio waves and a change in a dielectric constant of the object in accordance with Debye relaxation; and generates the image using the image function.

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.

External field response distribution visualization device and external field response distribution visualization method

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.

Magnetic response distribution visualization device, security inspection system, and magnetic response distribution visualization method

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.

Storage battery inspection device and storage battery inspection method

Provided is a measurement device including an application unit, a detection unit, and a calculation unit. The application unit applies a first magnetic field, which is generated by applying a pulse current to a coil or applying currents with a plurality of frequencies to the coil in order, to an object. The detection unit detects a second magnetic field which is generated by applying the first magnetic field to the object. The calculation unit calculates a distribution of a magnetic field source m in the second magnetic field. The calculation unit may further generate an imaging signal for displaying the calculated distribution of the magnetic field source m, as an image. The display unit displays the image indicating the distribution of the magnetic field source m by using the imaging signal.

Observation method and observation device

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.

Measurement device and measurement method

An imaging method includes a step of radiating a wave to a target object, a step of receiving a scattered wave as a result of the wave being scattered at the target object, and a step of reconstructing an image regarding internal information of the target object on the basis of scattered wave data indicating the scattered wave. In the step of reconstructing the image, a reconstruction function is derived by solving a partial differential equation by using the scattered wave data and an analysis model indicating a shape, and the image regarding the internal information of the target object is reconstructed by using the reconstruction function. Here, the partial differential equation is an equation satisfied by the reconstruction function for reconstructing the image regarding the internal information of the target object.

Imaging method and imaging apparatus

A scattering tomography method includes: radiating waves to an object from transmitting antenna elements arranged on a curved surface; receiving scattered waves by receiving antenna elements arranged on the curved surface; and reconstructing an image relating to the information on the interior of the object from scattered wave data representing the scattered waves received by the receiving antenna elements, and in the reconstructing, a function &#x3d5; for reconstructing the image relating to the information on the interior of the object is set in advance, an equation which a fundamental scattered function satisfies is constructed, a visualization function &#x3c1; that is obtained by solving the equation is derived from the scattered wave data, and the image relating to the information on the interior of the object is reconstructed using the visualization function.

Scattering tomography method and scattering tomography device

A distribution analyzing device () includes: an obtaining unit () which obtains measurement data of a field measured, through a sensor sensing area, independently at each of rotation angles and at each of grid coordinate positions of the sensor sensing area; and a calculation unit () which calculates a distribution of the field from the measurement data, using an arithmetic expression obtained by deriving a target harmonic function, which indicates the distribution of the field, using a condition that a convolution of the target harmonic function and a shape function, which indicates a shape of a cross section of the finite sensor sensing area along a plane parallel to the measurement plane, is equal to a provisional harmonic function derived by solving the Laplace equation using the measurement data and a size of the sensor sensing area in a direction perpendicular to the measurement plane.

Distribution analyzing device and distribution analyzing method

A conductivity distribution derivation method for deriving a conductivity distribution within a battery having an electrode plate that is flat includes: obtaining magnetic field information indicating a magnetic field; and deriving, based on a plurality of relational expressions which (i) an x component of a magnetic field vector in an x direction parallel to the electrode plate, (ii) a y component of the magnetic field vector in a y direction parallel to the electrode plate and perpendicular to the x direction, (iii) the conductivity distribution on a two-dimensional plane parallel to the electrode plate, and (iv) an electric potential distribution on a two-dimensional plane parallel to the electrode plate satisfy, the conductivity distribution that satisfies the plurality of relational expressions with respect to the magnetic field information.

Conductivity distribution derivation method and conductivity distribution derivation device

A scattering tomography method includes: radiating waves to an object from a plurality of transmitting antenna elements aligned on a side surface of a case; receiving scattered waves by a plurality of receiving antenna elements aligned on the side surface of the case; and reconstructing an image relating to information on an interior of the object using scattered wave data representing the scattered waves. In the reconstructing, a reconstruction function for reconstructing the image relating to the information on the interior of the object is set in advance for a three-dimensional space having the same shape as the case, a scattering field equation which the reconstruction function satisfies is constructed, a visualization function that is obtained by solving the scattering field equation is derived from the scattered wave data, and the image relating to the information on the interior of the object is reconstructed using the visualization function.

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Hyogo, Japan

Kenjiro Kimura