Nippon Telegraph and Telephone Corporation

Daicel Chemical Industries, Ltd.

Microsoft Technology Licensing, LLC

Agc Inc.

Tanita Corporation

Nippon Yusen Kabushiki Kaisha

Canon Kabushiki Kaisha

Jun Kato

Toshiki Ito

Keiko Chiba

Ken Okamoto

Yohei Toriumi

Naruto Arai

Kazuo Kishi

Masato Maruyama

Toshihisa Masuda

Sean C McDirmid

Nikolai Tillmann

Satoru Hommura

Kentaro Sato

Miyuki Kodama

Takeshi Honma

Xiang Cao

Hiroyuki Watabe

Shiori Yonezawa

Keiji Yamashita

Youji Kawasaki

Jonathan Paul De Halleux

Akiko Iimura

Go Itami

Hidetoshi Takada

Naomichi Nakamura

Tatsuya Miyajima

Sebastian Burckhardt

Michal J Moskal

Tatsuya Iizuka

Yoshihiko Maeda

Manuel A Faehndrich

Mayumi Yamashita

Shizuka Takahashi

Nobue Aoki

Fumihiko Ishiyama

A lightning induction system includes a plurality of flight vehiclesthat fly between a lightning originating pointin the sky where lightning is generated and a ground surface. The flight vehicleseach include: a flight unitthat generates lift force and propulsion force; a conductor cablethat is engaged with the flight unit, extends downward, and has a predetermined length; and a weight unitconnected to the lower end of the conductor cable. The flight unitis disposed in a Faraday cage. The Faraday cagehas a sphere shape, and the flight unitis fixed by a support pillarextending downward from the inner side of the top of the sphere.

Lightning induction system and method therefor

A lightning strike resistant structure of a flying object includes a lattice-shaped conductorsurrounding a flying objectwith a distance not hindering flight, an attachment partfor the conductorconnected between the lattice-shaped conductorand a part of the flying object, and a conducting wireconnected between the lattice-shaped conductorand a ground point on the ground.

Lightning strike resistant structure of flying object

A measurement individual difference correction system for measuring voltage to ground includes a cable comprising a conductor, a floor panel provided on a floor and comprising a conductor, an oscillation circuit connected between the cable and the floor panel, and configured to output a signal, a voltage-to-ground measurement device comprising an upper electrode and a lower electrode positioned apart from each other, and configured to measure voltage between the upper electrode and the lower electrode, and a computation device in communication with the voltage-to-ground measurement device, in which the computation device calculates combined impedance of electrostatic capacity between the user and the cable, impedance of the user, and electrostatic capacity between the user and the upper electrode, by using voltage of the signal output from the oscillation circuit and the voltage between the upper electrode and the lower electrode measured by the voltage-to-ground measurement device.

Measurement individual difference correction system in ground voltage measurement

A radar apparatus of the present embodiment includes a transmitting unit that transmits a frequency chirp signal whose frequency linearly changes with time, a receiving unit that receives a reflected wave that is the frequency chirp signal reflected by an object, a mixer that mixes the transmitted frequency chirp signal and the received reflected wave to obtain a beat signal, a frequency estimation unit that estimates a frequency of the beat signal, and a distance estimation unit that estimates a distance to the object based on the frequency of the beat signal. The frequency estimation unit calculates an autoregressive coefficient of an autoregressive model from a sequence of discrete signal values of the beat signal and estimates the frequency of the beat signal using a base frequency that is based on a pole of the autoregressive model.

Radar apparatus and distance measurement method

A device includes a resonant voltage measurement unitconfigured to input a predetermined frequency signal to a circuit including a fixed capacitance formed between a ground and a lower electrode, a variable capacitance formed between an upper electrode that is disposed above the lower electrode and the ground or between the lower electrode and the upper electrode, and a resonance inductor to measure a resonant voltage that is dependent on a current flowing in the resonance inductor when the variable capacitance is changed to cause the circuit to resonate, a pre-correction voltage-to-ground measurement unitconfigured to measure a pre-correction voltage-to-ground that is a voltage between a measurement electrode, which is disposed at an equal height to the lower electrode and forms a capacitance-to-ground between the measurement electrode and the ground, and a measurement probe connected to a conductor, and a voltage-to-ground correction unitconfigured to use the fixed capacitance, the variable capacitance, and the resonant voltage to obtain the capacitance-to-ground and to calculate a voltage-to-ground obtained by correcting the pre-correction voltage-to-ground using the capacitance-to-ground.

Ground voltage measuring and method

An electromagnetic field band-stop filter includes a plurality of unit structures that have reflection characteristics on an electromagnetic wave of a predetermined frequency. Each of the plurality of unit structures includes: a plurality of electrode parts each of which is disposed along a side of a polygon in a non-contact manner with another electrode part; and a plurality of conductor parts which are provided for the plurality of electrode parts on a one-to-one basis and each of which has at least one bent portion between one end and other end, the one ends of the plurality of conductor parts being connected to the electrode parts on a one-to-one basis and the other ends of the plurality of conductor parts being connected at one point on an inner side of the electrode parts in the individual unit structure. The plurality of unit structures are regularly and two-dimensionally disposed by disposing electrode parts of the plurality of unit structures to be adjacent to each other with a spacing that reflects the predetermined frequency.

Electromagnetic field band-stop filter

A frequency selective surface having a steep attenuation slope (high sharpness) characteristic is provided without decreasing the line width of a conductive pattern nor the pattern interval thereof. In a frequency selective surface having a structure in which resonators kxy having identical shapes are periodically arrayed on a dielectric substrate, each resonator kxy includes a cross-shaped conductive pattern formed on the dielectric substrateand a lateral patternand a longitudinal patternforming a cross are shaped such that each pattern is extended by a predetermined length in respective directions, each pattern extended by the predetermined length is further extended in both directions orthogonal to each other on the dielectric substrate, and leading end parts of the respective further extensions face each other at a predetermined interval d.

Frequency selective surface

To provide a frequency selective surface of which an operating frequency and a bandwidth thereof can be readily adjusted. A frequency selective surface structured such that resonators kformed by conductive patterns with a same shape are periodically arranged on a dielectric substrate, wherein the resonator kincludes: a conductor wire part with a lateral patternand a longitudinal patternwhich form a cross above a dielectric substrate; and an electrode plate part created by extending, in directions in which the lateral pattern and the longitudinal pattern are orthogonal to each other, respective both end parts of the lateral pattern and the longitudinal pattern having been extended by a prescribed length, the electrode plate part being shaped such that a tip portion thereof opposes a tip portion extended from another direction at an interval above a diagonal line, and the electrode plate part is shaped such that a central portion opposing an electrode plate part of another adjacent resonator is notched in a width of the lateral pattern, the electrode plate part being joined with the electrode plate part of the other adjacent resonator by being extended from a center of the notched portion in a width that is narrower than the width of the lateral patternand in a length that is shorter than the prescribed length, and the interval of the tip portion is wider than an interval with the electrode plate part of the other adjacent resonator.

To easily measure a voltage to ground of electromagnetic interference waves generated on a cable. A capacitance-to-ground measurement mechanismincludes a first electrodeand a second electrodepositioned at equal altitudes to be opposed to the earth, and a first voltage measurement deviceto measure a voltage generated in a first resistanceconnected between the first electrodeand the second electrodeby an output signal from an oscillation circuit. A voltage-to-ground measurement mechanismincludes a GND electrodepositioned at an altitude equal to that of the first electrodeand the second electrodeto be opposed to the earth, and a second voltage measurement deviceto measure a voltage generated in a second resistanceconnected between the GND electrodeand a probethat is brought into contact with a cable coreas a measurement target. A computation mechanismincludes a computation deviceto calculate a voltage to ground of electromagnetic interference waves generated on a cable based on data of respective voltages measured by the capacitance-to-ground measurement mechanismand the voltage-to-ground measurement mechanism

Capacitive voltage measurement device

To accurately estimate frequency characteristics from structural parameters of a frequency selective surface. A frequency selective surface design apparatus includes an LC generation unitthat receives an input of a structural parameter, and generates an inductance L and a capacitance C of a unit cell, a corrected resonance point calculation unitthat receives the number n of times of calculation input from an outside, the inductance L, and the capacitance C, models a correction circuit by using a circuit in which a virtual capacitance is connected in parallel via a transmission line to each distribution inductance obtained by division of the inductance L by the calculation number n and the transmission line is terminated at the capacitance C, and calculates a corrected resonant frequency fC from the impedance of the correction circuit, and a characteristic calculation unitthat receives inputs of the inductance L, the capacitance C, and the corrected resonant frequency fC, calculates a pre-correction resonant frequency from the inductance L and the capacitance C, obtains a correction coefficient by dividing the corrected resonant frequency fC by the pre-correction resonant frequency, and calculates a corrected return loss and a corrected insertion loss.

Frequency selective surface designing device

To provide a liquid composition with which a catalyst layer and a polymer electrolyte membrane will hardly be broken at the time of their formation and a method for producing the liquid composition; and a method for producing a membrane/electrode assembly by which a catalyst layer and a polymer electrolyte membrane will hardly be broken at the time of their formation. A liquid composition comprising a polymer having ion exchange groups, water and an organic solvent, wherein

Liquid composition, method for producing it, and method for producing membrane/electrode assembly

A power consumption estimation method is provided, which is performed by a power consumption control device including a correlation database that stores data indicating a correlation between an operation state and power consumption of at least one household information communication device. The power consumption estimation method includes an operation state information acquisition step of acquiring operation state information from each household information communication device, a power consumption acquisition step of acquiring power consumption of each household information communication device by referring to the correlation database by using the operation state information, and a presenting step of presenting power consumption information by function for the at least one household information communication device, based on the power consumption of each household information communication device.

Power consumption estimation method, power consumption suppression method, environmental contribution estimation method and power consumption control apparatus

A common-mode voltage measurement apparatus according to an embodiment includes a measurement electrode attached to a conductor capable of being brought into contact with a coated cable, a measurement circuit configured to measure a common-mode voltage generated in the cable, and a compensation circuit connected in series between the measurement electrode and the measurement circuit, the compensation circuit being configured to compensate for a parasitic capacitive component formed between the measurement electrode and the conductor.

Common mode voltage measuring device and common mode voltage measuring method

A lightning damage prediction apparatus that predicts a risk of a failure of access equipment due to a lightning strike is provided. A regression equation representing a relationship between a lightning strike density for each section in a prediction target area, an equipment density for each section of components of a plurality of types constituting equipment, and a lightning damage failure density for each section of the equipment or the component, corresponding to a first period in the past, is generated, and a lightning damage failure density for each section of a prediction target area corresponding to a second period is predicted on the basis of a lightning strike density and an equipment density for each section in the prediction target area corresponding to the second period that is a prediction target, and the regression equation.

Lighting damage prediction apparatus, method, and program

A fuse with a frequency separation function includes an input port portion, an output port portion, a first transmitting portion between the input port portion and the output port portion, the first transmitting portion configured to transmit a lightning surge current entering the input port portion and guide the lightning surge current to the output port portion, a second transmitting portion between the input port portion and the output port portion, the second transmitting portion configured to be capable of transmitting a normal current and an abnormal current entering the input port portion, and a melting mechanism portion which is provided between the second transmitting portion and the input port portion or between the second transmitting portion and the output port portion, the melting mechanism configured not to melt and break when the normal current passes, and configured to melt and break when the abnormal current passes.

Growing community of inventors

Tokyo, Japan

Jun Kato