Abstract: A method of determining the state of a battery includes acquiring measurement values of a magnetic field of the battery, which is mounted on a device, measured by a magnetometer, calculating information regarding the relative position of the magnetometer based on the measurement values of the magnetic field of the battery and reference values of the magnetic field of the battery, and determining the state of the battery based on the information regarding the relative position of the magnetometer.

Abstract: A current measurement device (1 to 3) includes a first sensor (SE1) configured to detect a direct current magnetic field and a low-frequency alternating current magnetic field generated by a current (I) flowing through a measurement target conductor (MC), a hollow magnetic shielding member (12) that includes a cutout portion (CP2) into which the measurement target conductor is inserted and in which the first sensor is accommodated, a fixing mechanism (13) configured to fix the measurement target conductor such that a distance between a center of the measurement target conductor inserted into the cutout portion of the magnetic shielding member and the first sensor is a predetermined reference distance (r), and a first calculator (21) configured to calculate a current flowing through the measurement target conductor based on a detection result of the first sensor.

Abstract: A solenoid valve capable of stably controlling the flow rate or pressure of a fluid includes: a valve body; a valve seat on which the valve body is to be seated; a solenoid including a movable iron core, a rod, and a fixed iron core, and exerting a driving force on the valve body in a valve closing direction; a spring biasing the valve body in a valve opening direction; and a valve housing partially defining a valve chamber in which the valve body and the valve seat are disposed. A spring chamber in which the spring is disposed is formed between the valve chamber and the fixed iron core, and the valve body isolates the valve chamber and the spring chamber from each other when the valve is opened.

Abstract: A vehicle includes: a secondary battery configured to supply electric power for travel driving; a first communication unit configured to communicate with a server device and uploads information on the state of the secondary battery to the server device; a display unit configured to display images; and a display control unit configured to cause the display unit to display an image in which a deterioration degree of the secondary battery with respect to a mileage or the number of years run with respect to the vehicle can be compared with the result of statistically processing the deterioration degree of the secondary batteries with respect to a mileage or the number of years run with respect to other vehicles on the basis of the information that the first communication unit has received from the server device.

Abstract: A determination system (1) includes a sensor (22) configured to measure physical properties of a target battery (41) that is a battery installed in a vehicle (40), and an information processing apparatus (10) communicably connected to the sensor (22), the information processing apparatus (10) including a controller (11).

Abstract: A battery identification device for identifying a battery including a plurality of battery cells includes: a magnetic field measurer configured to measure a magnetic field which is generated by a current flowing in the battery; and a reader configured to read information on identity between both results which is determined by comparing a measurement result of the measured magnetic field with a prescribed value of magnetic field information correlated with the type of a battery.

Abstract: A battery identification device for identifying a tubular battery including a wound product in which electrodes are wound includes: a current applier configured to apply a current to the battery, a magnetic field measurer configured to measure a magnetic field generated with application of the current; and an acquirer configured to acquire a type of the battery which is determined by comparing the measurement result of the magnetic field measured by the magnetic field measurer with magnetic field information correlated with the type of battery.

Abstract: A battery identification system includes a sensor having a sensing surface and a plurality of magnetic elements arranged in or on the sensing surface, a meter configured to measure, using the plurality of magnetic elements, a magnetic field distribution on an outer surface of a battery with the sensing surface facing the outer surface of the battery, which includes a plurality of battery cells electrically connected to each other, and a computer configured to identify the type of the battery by comparing the magnetic field distribution measured by the meter with a reference magnetic field distribution, 10 with reference to reference data indicating the reference magnetic field distribution, and output information regarding the identified type of the battery, as battery information.

Abstract: A current measurement device includes: four or more triaxial magnetic sensors arranged to have predefined positional relationships such that magnetism-sensing directions thereof are parallel to each other; and a calculator configured to calculate currents flowing through a pair of conductors to be measured, which are arranged in proximity to each other, based on detection results of the four or more triaxial magnetic sensors and the positional relationships between the four or more triaxial magnetic sensors, the currents flowing in mutually opposite directions.

Abstract: The current measurement device (1, 2) includes a first sensor (SE1) configured to detect a direct current magnetic field and a low-frequency alternating current magnetic field generated due to the current (1) flowing through the conductor (MC) to be measured, a second sensor (SE2) configured to detect alternating current magnetic fields from a low frequency to a high frequency generated due to the current (I) flowing through the conductor to be measured, a first calculator (21, 21A) configured to calculate the current flowing through the conductor to be measured from a detection result of the first sensor using distance information indicating a distance (r) between the first sensor (SE1) and the conductor (MC) to be measured, a second calculator (22) configured to calculate the current flowing through the conductor to be measured from a detection result of the second sensor, and a synthesizer (23) configured to synthesize a calculation result of the first calculator with a calculation result of the second cal

Abstract: A current measurement device (1 and 2) is for measuring a current (I) flowing through measurement target conductors (MC1 and MC2), and the current measurement device includes: a plurality of triaxial magnetic sensors (11, 12, and 13) disposed so that a magnetic sensing direction and a relative position have a prescribed relationship; a noise remover (25a) configured to remove noise components included in detection results of the plurality of triaxial magnetic sensors; a sign adder (25b) configured to add a sign to the detection results from which the noise components have been removed, based on sign information of each of the detection results of the plurality of triaxial magnetic sensors obtained at a specific point in time; and a current calculator (25c and 25d) configured to calculate a current flowing through the measurement target conductors by using the detection results to which the sign has been added by the sign adder.

Abstract: A magnetic detection apparatus according to the present disclosure includes a magnetic sensor and a measurement apparatus. The magnetic sensor includes a first transmission line and a second transmission line arranged to be non-parallel to each other. The measurement apparatus includes a signal generator configured to generate a first incident wave and a second incident wave, a signal detector configured to detect a first reflected wave caused by an impedance mismatch of the first transmission line and a second reflected wave caused by an impedance mismatch of the second transmission line, and a controller. The controller calculates a first magnetic field based on the first incident wave and the first reflected wave and a second magnetic field based on the second incident wave and the second reflected wave and calculates a biaxial magnetic field based on the first magnetic field and the second magnetic field.

Abstract: An elongated medical device includes a first layer having a hollow cylindrical shape and containing a fluororesin having an adhesive functional group (adhesive resin) and a first colorant, and a second layer arranged in contact with an outer peripheral surface of the first layer and having a predetermined colored region formed of a second colorant having a color different from a color of the first colorant. The predetermined colored region is formed on a part of the outer peripheral surface of the first layer.

Abstract: A current measurement device (1 to 3) includes a first sensor (SE1) configured to detect a direct current magnetic field and a low-frequency alternating current magnetic field generated by a current (I) flowing through a measurement target conductor (MC), a hollow magnetic shielding member (12) that includes a cutout portion (CP2) into which the measurement target conductor is inserted and in which the first sensor is accommodated, a fixing mechanism (13) configured to fix the measurement target conductor such that a distance between a center of the measurement target conductor inserted into the cutout portion of the magnetic shielding member and the first sensor is a predetermined reference distance (r), and a first calculator (21) configured to calculate a current flowing through the measurement target conductor based on a detection result of the first sensor.

Abstract: A gas separation method including performing a gas separation operation that separates a source gas into a primary-side gas and a secondary-side gas with a membrane of a membrane module. The source gas contains a combustible component. The gas separation operation includes pressurizing the source gas and supplying the source gas to a primary side of the membrane module and depressurizing a secondary side of the membrane module to a pressure lower than an atmospheric pressure. The primary-side gas has a higher concentration of the combustible component than the secondary-side gas, and the gas separation method further includes detecting a composition of the secondary-side gas and stopping the gas separation operation in an instance in which the composition enters a specified range.

Abstract: An elongated medical instrument includes: a base material part; and an outer layer part made of a resin based on a resin suspension that is coated on an outer peripheral surface of the base material part; where a surface of the outer layer part has irregularly disposed recesses formed from cracks generated by drying of the resin suspension, and protrusions formed with an outer peripheral surface formed on an outer peripheral side of the recesses.

Abstract: An elongated medical instrument includes a base material part, and an outer layer part made of a resin provided on a surface of the base material part. An outer surface of the outer layer part is a substantially flat surface other than the presence of irregularly disposed recesses or protrusions.

Abstract: A separation membrane module may decrease a bending load applied to a support member supporting ends of tubular separation membranes and omission of a seal member between the outer circumferential surface of the support member and the inner circumferential surface of a housing. The separation membrane module may include a tubular housing, tubular separation membranes arranged in a longitudinal direction of the housing, end tubes connected to lower ends of the tubular separation membranes, a support box supporting the end tubes, and a backpressure chamber below the support box. The tubular separation membranes may be in communication with a support box collection chamber. A nozzle disposed on the support box may extract permeated fluid. A chamber and the backpressure chamber are in communication via a gap between the support box outer circumferential surface and the inner circumferential surface. The chamber and backpressure chamber have substantially the same pressure.

Abstract: An availability calculation device includes a bandwidth notification information storing unit that stores received bandwidth notification information for a certain period, and an availability calculation unit that calculates an availability for each bandwidth of a wireless link by using the bandwidth notification information stored in the bandwidth notification information storing unit.

Abstract: A guide wire includes a main body portion having an elongated outer shape and having a base and a marker alternately presented on an outer surface along an extending direction, and a resin layer having light permeability, covering the outer surface of the main body portion, and including a recessed portion and a protruding portion alternately arranged along the extending direction of the main body portion, wherein in longitudinal cross-section along the extending direction of the main body portion, a width of the marker is wider than a width of the protruding portion.