Abstract: A photoelectric volume pulse wave sensor includes a light-emitting element and a light-receiving element. Electrodes constituting the light-emitting element or the light-receiving element are surface electrodes. At least one electrode among the electrodes is also used as an electrode that detects body motion.

Abstract: A biological condition diagnosis system includes, at least: an obtainer, a receiver, a preprocessor, a processor, and a diagnoser, for biological data. The obtainer obtains the biological data by a reflective photoelectric plethysmography sensor. The preprocessor optimally preprocesses the obtained biological data. The processor extracts a feature point from the preprocessed data. The diagnoser diagnoses a biological condition using machine learning, based on the extracted biological data.

Abstract: A latch device for a front hood of a vehicle including: a latch; a primary pawl; a secondary pawl; a motor configured to rotate forward and backward; and a release mechanism configured to operate by the motor, in which the release mechanism is configured to release a meshing state between the latch and the primary pawl by rotation of the motor in a first direction to move the front hood from the fully closed position to the half-engaged position, and release the meshing state between the latch and the primary pawl and the meshing state between the latch and the secondary pawl by rotation of the motor in a second direction opposite to the first direction to allow the front hood to move from the fully closed position to a fully open position.

Abstract: A front trunk system, including: a latch device; an operation portion provided in the front trunk; and a switching mechanism configured to switch paths that transmitting the operation force input to the operation portion to the latch device, in which when the vehicle is in a first state, the switching mechanism connects the operation portion and the latch device via a first transmission path, allowing the meshing state between a latch and a primary pawl and a meshing state between the latch and a secondary pawl to be released by the operation force input to the operation portion, and when the vehicle is in a second state, the switching mechanism connects the operation portion and the latch device via the second transmission path, allowing the meshing state between the latch and the primary pawl to be released by the operation force input to the operation portion.

Abstract: A latch device for a front hood including: a latch that meshes with the striker provided in the front hood; a primary pawl that engages with the latch to maintain the front hood at a full-close position; a secondary pawl that engages with the latch to maintain the front hood at a half-engaged position; a motor; and a driving force transmission member that operates by driving the motor and capable of releasing engaged states between the latch and the primary pawl and between the latch and the secondary pawl, in which a closer component mounting portion is provided between the driving force transmission member and the latch, the closer component mounting portion being capable of mounting a closer component thereon that allows the latch device to perform, by driving the motor, a closer function of moving the front hood from the half-engaged position to the full-close position.

Abstract: Disclosed is a reflective photoplethysmogram sensor comprising: a planar light emitting element and a planar light receiving element. The light emitting element and the light receiving element do not face each other in an up/down direction. The minimum distance h (mm) between at least a pair of the light emitting element and the light receiving element satisfies the following expression (1) (t×03.7)2?h?(t×1.3)2??Expression (1) where the minimum distance between the light emitting element and the light receiving element is h (mm), and a thickness of skin (epidermis+dermis) of a human body is t (mm), and the thickness is within the range 0.1 to 4 mm.

Abstract: A vehicle door operating device including: a closing latch unit holding a door in a closed position, wherein the door is supported on a vehicle body to open and close; a fully opening latch unit holding the door in a fully open position; an actuator having a motor; an emergency handle operated manually from a vehicle interior side; and an operation relay unit which operates the closing latch unit and the fully opening latch unit to be unlatched respectively when driven by the actuator, and operates the closing latch unit to be unlatched when manually operated by the emergency handle such that the closing latch unit is held in an unlatched state.

Abstract: A photoelectric volume pulse wave sensor includes a light-emitting element and a light-receiving element. Electrodes constituting the light-emitting element or the light-receiving element are surface electrodes. At least one electrode among the electrodes is also used as an electrode that detects body motion.

Abstract: A biological condition diagnosis system includes, at least: an obtainer, a receiver, a preprocessor, a processor, and a diagnoser, for biological data. The obtainer obtains the biological data by a reflective photoelectric plethysmography sensor. The preprocessor optimally preprocesses the obtained biological data. The processor extracts a feature point from the preprocessed data. The diagnoser diagnoses a biological condition using machine learning, based on the extracted biological data.

Abstract: A vehicle door operating device including: a closing latch unit holding a door in a closed position, wherein the door is supported on a vehicle body to open and close; a fully opening latch unit holding the door in a fully open position; an actuator having a motor; an emergency handle operated manually from a vehicle interior side; and an operation relay unit which operates the closing latch unit and the fully opening latch unit to be unlatched respectively when driven by the actuator, and operates the closing latch unit to be unlatched when manually operated by the emergency handle such that the closing latch unit is held in an unlatched state.

Abstract: Disclosed is a reflective photoplethysmogram sensor comprising: a planar light emitting element and a planar light receiving element. The light emitting element and the light receiving element do not face each other in an up/down direction. The minimum distance h (mm) between at least a pair of the light emitting element and the light receiving element satisfies the following expression (1) (t×03.7)2?h?(t×1.3)2 ??Expression (1) where the minimum distance between the light emitting element and the light receiving element is h (mm), and a thickness of skin (epidermis+dermis) of a human body is t (mm), and the thickness is within the range 0.1 to 4 mm.

Abstract: A mixing apparatus for mixing powder and liquid, includes: an apparatus main body having an internal space; a cylindrical member arranged in the internal space with one end facing upward and the other end facing downward, the one end and the other end being opened; a powder dispersing portion arranged above the apparatus main body, the powder dispersing portion dispersing the powder into a space of the cylindrical member; a liquid spraying portion arranged in a vicinity of the powder dispersing portion, the liquid spraying portion spraying the liquid into a space of the cylindrical member; a collection portion arranged below the apparatus main body, the collection portion collecting a mixed powder consisting of the powder dispersed by the powder dispersing portion and the liquid sprayed by the liquid spraying portion; a filter arranged around the cylindrical member in the internal space; and a discharge port discharging air in the internal space through the filter.

Abstract: A mixing apparatus for mixing powder and liquid, includes: an apparatus main body having an internal space; a cylindrical member arranged in the internal space with one end facing upward and the other end facing downward, the one end and the other end being opened; a powder dispersing portion arranged above the apparatus main body, the powder dispersing portion dispersing the powder into a space of the cylindrical member; a liquid spraying portion arranged in a vicinity of the powder dispersing portion, the liquid spraying portion spraying the liquid into a space of the cylindrical member; a collection portion arranged below the apparatus main body, the collection portion collecting a mixed powder consisting of the powder dispersed by the powder dispersing portion and the liquid sprayed by the liquid spraying portion; a filter arranged around the cylindrical member in the internal space; and a discharge port discharging air in the internal space through the filter.

Abstract: A powder classifying device includes a plurality of powder classifiers that impart a whirling motion to powder with whirling gas streams to classify the powder into coarse powder and fine powder, a gas supply source that supplies the plurality of powder classifiers with gas for generating the whirling gas stream, a powder supplier that supplies the plurality of powder classifiers with powder having a particle size distribution, a fine powder collecting section that collects fine powder classified by each of the plurality of powder classifiers, a coarse powder recovery section that recovers coarse powder classified by each of the plurality of powder classifiers, and a controller that controls flow rates of gases supplied to the plurality of powder classifiers so that a classification point is substantially equal among the plurality of powder classifiers.

Abstract: A powder-classification method includes a mixing step in which a powder and a liquid additive are mixed together, a drying step in which the powder mixed in the mixing step is dried, a loading step in which the powder dried in the drying step is loaded into a fluid classifier, a heating step in which a gas is heated, a supplying step in which the gas heated in the heating step is supplied to the fluid classifier, and a classifying step in which the powder is classified in the fluid classifier based on a grain size of the powder.

Abstract: Provided is a method for classifying a powder using a classifier, wherein the method comprises: a mixing step for mixing a powder and an auxiliary agent formed from an alcohol aqueous solution containing 10 to 50 mass % of an alcohol; an introduction step for introducing the powder mixed in the mixing step to the classifier; a heating step for heating a gas; a feed step for feeding the gas heated in the heating step to the classifier; and a classifying step for classifying the powder in the classifier on the basis of grain size.

Abstract: A method for classifying a powder using a fluid classifier, which comprises a mixing step of mixing a powder and an assistant agent composed of an alcohol, an input step of inputting the powder mixed in the mixing step into the fluid classifier, a heating step of heating a gas, a supply step of supplying the gas heated in the heating step into the fluid classifier, and a classification step of classifying the powder according to particle diameters in the fluid classifier.

Abstract: A method for manufacturing a powder includes a mixing step in which a powder and a liquid additive are mixed together, a drying step in which the powder mixed in the mixing step is dried, a loading step in which the powder dried in the drying step is loaded into a pulverizer, a heating step in which a high-pressure gas is heated, a supplying step in which the high-pressure gas heated in the heating step is supplied to the pulverizer, and a pulverizing step in which the powder is pulverized by the pulverizer.

Abstract: A powder-classification method includes a mixing step in which a powder and a liquid additive are mixed together, a drying step in which the powder mixed in the mixing step is dried, a loading step in which the powder dried in the drying step is loaded into a fluid classifier, a heating step in which a gas is heated, a supplying step in which the gas heated in the heating step is supplied to the fluid classifier, and a classifying step in which the powder is classified in the fluid classifier based on a grain size of the powder.

Abstract: A powder classifying device includes a plurality of powder classifiers that impart a whirling motion to powder with whirling gas streams to classify the powder into coarse powder and fine powder, a gas supply source that supplies the plurality of powder classifiers with gas for generating the whirling gas stream, a powder supplier that supplies the plurality of powder classifiers with powder having a particle size distribution, a fine powder collecting section that collects fine powder classified by each of the plurality of powder classifiers, a coarse powder recovery section that recovers coarse powder classified by each of the plurality of powder classifiers, and a controller that controls flow rates of gases supplied to the plurality of powder classifiers so that a classification point is substantially equal among the plurality of powder classifiers.