Abstract: A biological information measurement device that performs sound wave communications with an external terminal including a microphone includes a housing; a measurement circuit that measures biological information; a modulation circuit that converts the biological information measured into a sound wave signal; and a vibration member that vibrates based on the sound wave signal transmitted from the modulation circuit. The measurement circuit, the modulation circuit and the vibration member are provided inside the housing. The housing includes a terminal placement surface on which the terminal is placed. The vibration member and the terminal placement surface are in contact with each other so that vibration of the vibration member is transmitted to the terminal placement surface.

Abstract: An electric toothbrush includes an oscillating assembly and a driving assembly. The oscillating assembly has a plurality of tooth cleaning elements, a light emitting element, and a light receiving element. The drive assembly drives the oscillating assembly to oscillate at a first frequency. The light receiving element is fixed on an isolating member having a resonant frequency different from the first frequency.

Abstract: In one embodiment, the invention can be a brush unit detachable from a main body unit of an electric toothbrush. The brush unit includes: a light transmitting part included on a front surface of the brush unit, a plurality of tooth cleaning elements extending from the front surface of the brush unit in a pressing direction, wherein the light transmitting part directs more light in a first direction, which intersects the pressing direction, than in the pressing direction; and a light receiving part included on the front surface for receiving light; wherein the light transmitting part and the light receiving part are arranged on opposing sides of the plurality of tooth cleaning elements; and wherein the first direction lies within a plane including both the light transmitting part and the light receiving part.

Abstract: Described are a lead-acid battery system and a lead-acid battery life estimation method capable of accurately estimating a remaining life of a lead-acid battery by calculating a capacity turnover (CT) value during operation in consideration of at least one of an upper limit state of charge (SOC) or an upper limit voltage. A CT value calculation unit calculates the CT value during operation using at least one of an upper-limit-SOC-based correction coefficient (KHSOC) calculated based on the upper limit SOC, which is an SOC having the largest value when the lead-acid battery is charged, or an upper-limit-voltage-based correction coefficient (KHV) calculated based on the upper limit voltage, which is the highest voltage when the lead-acid battery is charged.

Abstract: Described are a lead-acid battery system and a lead-acid battery life estimation method capable of accurately estimating a remaining life of a lead-acid battery by calculating a capacity turnover value during operation in consideration of the number of equalization charges of the lead-acid battery or an overcharge rate integrated value of the equalization charge of the lead-acid battery. The lead-acid battery system estimates the remaining life of the lead-acid battery by comparing a capacity turnover value from the beginning of life to the end of life with the capacity turnover value during operation. A capacity turnover value calculation unit in the lead-acid battery system calculates the capacity turnover value during operation by using an equalization-charge-number-based correction coefficient KCN calculated based on the number of equalization charges or a charge-rate-based correction coefficient KCP calculated based on the overcharge rate integrated value of the equalization charge.

Abstract: Described are a lead-acid battery system and life estimation method capable of accurately estimating a remaining life of a lead-acid battery by calculating a capacity turnover (CT) value during operation in consideration of at least one of a lower limit state of charge (SOC) or a low SOC dwell time. A capacity turnover value calculation unit calculates the CT value using at least one of a lower-limit-SOC-based correction coefficient KLSOC calculated based on a lower limit SOC, which is an SOC having the smallest value when the lead-acid battery is charged and discharged once, respectively, or a low-SOC-dwell-time-based correction coefficient Kt_LSOC calculated based on a low SOC dwell time tLSOC, which is an elapsed time until the next discharge or charge starts when a discharge ends below a reference SOC.

Abstract: Described are a lead-acid battery system and a lead-acid battery life estimation method capable of accurately estimating a remaining life of a lead-acid battery by calculating a capacity turnover value during operation in consideration of a magnitude of a depth of discharge (DOD). The lead-acid battery system estimates the remaining life by comparing a capacity turnover value from the beginning to the end of life with the capacity turnover value during operation. The lead-acid battery system includes a capacity turnover value calculation unit that calculates the capacity turnover value during operation. The capacity turnover value calculation unit calculates the capacity turnover value during operation using a DOD-based correction coefficient calculated based on the DOD, which is calculated by dividing an integrated discharge capacity after the start of the discharge of the lead-acid battery by a rated capacity of the lead-acid battery.

Abstract: Described are a lead-acid battery system and life estimation method that can improve reliability by more accurately estimating degradation of a lead-acid battery regardless of its cause. A transition determination unit determines switching of charging/discharging process of the battery, and a current value determination unit detects a change in a discharge current value during a discharge period, When a change is detected, a calculation unit calculates a capacitance turn-over (CT) value on the basis of a discharge current value acquired for each section divided by the change, and a degradation determination unit determines a degradation degree of the battery using the CT value.

Abstract: Described are a lead-acid battery system and life estimation method that can contribute to improvement of reliability by more accurately estimating a degradation degree of a, e.g., lead-acid) storage battery regardless of a degradation cause. A transition determination unit determines switching of a charging/discharging process of a battery. A calculation unit calculates a CT value on the basis of a discharge current value during a discharge period of the battery, and a degradation determination unit determines a degradation degree of the battery using the CT value calculated by the calculation unit.

Abstract: An electric toothbrush that detects plaque on the teeth, ensures accurate plaque detection, and performs cleaning of plaque. The electric toothbrush may include a drive module having a first drive for oscillating a brush unit in a first direction and a second drive for oscillating the brush unit in a second direction; a light emitting module; a reflected light detector; a plaque detector for detecting plaque based on reflected light detected by the reflected light detector; a liquid spray part for spraying liquid from the brush unit; and a liquid spray controller for controlling a spray timing of the liquid. The liquid spray controller may spray the liquid when the amount of plaque detected by the plaque detector exceeds a threshold. The drive module may stop the first drive and perform only the second drive while the liquid is being sprayed.

Abstract: An electric toothbrush that detects plaque on the teeth, ensures accurate plaque detection, and performs cleaning of plaque. The electric toothbrush may include a body having a gripping part and a stem with a brush unit detachably coupled to the body. The electric toothbrush may include a light emitting element for emitting light onto the tooth and a light receiving element for receiving light that reflects off of the tooth. A controller may be included to determine an amount of plaque on the tooth based on the amount of reflected light detected. The electric toothbrush may also include a fluid dispensing system that dispenses fluid based on the amount of reflected light detected. In some aspects, the electric toothbrush may operate in multiple oscillation modes, and it may only dispense fluid in some of the modes but not all of the modes.

Abstract: An oral care implement body to which a replacement head can be detachably coupled. In one embodiment, the oral care implement body includes a gripping portion having a shoulder, a stem extending from the shoulder along a longitudinal axis, and a boss protruding from an outer surface of the stem. The boss may have a locking rib section having an undercut surface that is axially spaced from the shoulder and a positioning rib section extending from the locking rib section to the shoulder. The undercut surface may circumferentially protrude from a first side surface of the positioning rib section. The locking rib section may extend along a first rib axis and the positioning rib section may extend along a second rib axis, the first rib axis oriented obliquely to the second rib axis.

Abstract: The plaque detecting device of the present invention comprises a light emitting unit (450) which irradiates ultraviolet or blue excitation light (L) toward the tooth surface (99a), and a first and second light receiving units (402) which receive radiated light (L?) from the tooth surface (99a). The first light receiving unit extracts the spectral component of a first wavelength region including the wavelength range of fluorescent light specific to plaque from the radiated light (L?), and obtains a first output value corresponding to the intensity of that spectral component. The second light receiving unit extracts, from the radiated light (L?), the spectral component of a second wavelength region containing the wavelength range of the fluorescent light specific to enamel and having a predetermined lower limit wavelength below the lower limit wavelength of the first wavelength region, and obtains a second output value corresponding to the intensity of this spectral component.

Abstract: A bipolar lead-acid storage battery has both life performance to withstand long-term operation and high capacity performance. Positive electrode current collector plates include a lead alloy sheet, a mass loss per total surface area of a test piece is 100 mg/cm2 or less when measured after the test piece is placed in sulfuric acid at a concentration of 38 mass % maintained at a temperature of 60° C., and a continuous anodization performed at a constant potential of 1,350 mV on a reference electrode for 28 days. A thickness of the collector plate arranged on one surface of a substrate that covers both a side of a positive electrode and a side of a negative electrode of a cell member is between 0.10 mm and 0.50 mm, and a ratio of a volume of the current collector plate to a rated capacity of the battery is between 0.11 and 0.67.

Abstract: A bipolar storage battery includes cell members arranged with spacing in a stacked manner, each of the cell members including a positive electrode, a negative electrode, and separators interposed between the positive electrode and the negative electrode, space-forming members including a substrate that forms a plurality of spaces individually accommodating the plurality of cell members, and a frame body surrounding a side surface of the cell member. Each of the plurality of separators has a first surface and a second surface with different surface roughness, and a surface in contact with at least the positive active material layer is a surface having a smaller (finer) surface roughness than the first surface or the second surface. This configuration may suppress local use of active material during charging and discharging to achieve uniform use of active material in a cell.

Abstract: A bipolar storage battery includes cell members arranged with spacing in a stacked manner, each of the cell members including a positive electrode, a negative electrode, and an electrolyte layer interposed between the positive electrode and the negative electrode, and space-forming members forming a plurality of spaces individually accommodating the plurality of cell members. A value obtained by dividing the distance between a positive active material layer and a negative active material layer placed in a position facing the positive active material layer by the sum of the thickness of the positive active material layer and the thickness of the negative active material layer is 1.1 or more. The bipolar storage battery may suppress local use of active material during charging and discharging to achieve uniform use of active material in a cell.

Abstract: During welding for manufacturing a bipolar storage battery, it is possible to reduce heat accumulation inside an electrical conductor and heat conductivity to a periphery of a through-hole by connecting current collector plates on both surfaces of a substrate. In the battery in which a positive electrode current collector plate and a negative electrode current collector plate of cell members adjacent to each other are electrically connected to each other by an electrical conductor arranged in a through-hole and a plurality of cell members are electrically connected in series, an area of at least one of a connection surface of the electrical conductor with the positive electrode current conductor plate and a connection surface of the electrical conductor with the negative electrode current collector plate is smaller than a cross-sectional area of the electrical conductor parallel to the connection surface in a middle portion in a plate thickness direction.

Abstract: A belt-type continuously variable transmission includes an actual gear ratio calculation unit for calculating an actual gear ratio based on the rotation speed of a drive pulley and the rotation speed of a driven pulley, a reference gear ratio calculation unit for calculating a reference gear ratio by modifying the actual gear ratio based on an input torque and a driven pulley hydraulic pressure, and a condition determination unit for, in a case where the target gear ratio is an overdrive gear ratio, determining that at least part of rings of a belt is missing when the reference gear ratio is greater than or equal to a predetermined gear ratio and a drive pulley hydraulic pressure is greater than or equal to a predetermined hydraulic pressure.

Abstract: An imaging system, comprising a shooting operation interface that operates to form an image of a subject, and a processor that has a bio-information acquisition section and a stress determination section, wherein the bio-information acquisition section acquires bio-information of an operator when, during shooting awaiting action where an instant for acquiring still images is awaited, the shooting operation interface is operated, and the stress determination section determines stress conditions that shooting actions place on the operator based on the bio-information that has been acquired using the bio-information acquisition section.

Abstract: A deterioration determination device for a storage battery system includes: a current sensor configured to, at a time of stopping charging or stopping discharging of storage batteries, measure circulation current generated among storage battery arrays in each of storage battery array blocks; a measurement control unit configured to collect a value of the circulation current measured by the current sensor; and a storage battery state determining unit configured to, from the collected value of the circulation current, determine whether or not there is deterioration of the storage batteries in the storage battery array blocks.