Abstract: A battery monitoring device includes: a pair of terminals for measuring voltage or current of a battery, and to which a filter unit including a capacitive element is connected; an AD converter that measures a waveform of voltage between the terminals during charging or discharging of the capacitive element; and a time constant calculation unit that calculates a time constant of the filter unit based on the waveform measured. The AD converter is, for example, a first AD converter or a second AD converter. The filter unit is, for example, a first filter unit or a second filter unit.

Abstract: A battery anomaly detection device includes: an alternating-current (AC) impedance measurer that measures AC impedance of a battery cell; and an anomaly determiner that determines whether the AC impedance is within a reference range, and when the AC impedance is not within the reference range, determines that the battery cell is an anomalous cell.

Abstract: A battery state estimation device includes: a first state of charge (SOC) calculator that calculates a first SOC using a first method that uses the battery model parameter of a battery; a second SOC calculator that calculates a second SOC using a second method different from the first method; an alternating-current (AC) impedance measurement unit that measures the AC impedance of the battery when the error between the first SOC and the second SOC is greater than a predetermined threshold; and a battery model parameter calculator that calculates a battery model parameter using the measured AC impedance. The first SOC calculator recalculates the first SOC using the battery model parameter calculated.

Abstract: A battery management circuit includes: a reference signal generator that generates a first reference frequency signal and a second reference frequency signal having a phase different from a phase of the first reference frequency signal; an alternating-current superimposer that superimposes an alternating current on the secondary battery, the alternating current having a frequency component of the first reference frequency signal; a voltage measurer that measures a voltage of the secondary battery by performing sampling using a frequency; a current measurer that measures a current of the secondary battery by performing sampling using a frequency; and a converter that converts each of results of measurements by the voltage measurer and the current measurer into a complex voltage and a complex current, by multiplying the result of the measurement by the first reference frequency signal and the second reference frequency signal.

Abstract: A connector (1) is constituted by a first member (10) and a second member (40). The first member (10) has a male connecting portion (11) at a first end and a screwing structure (26) at a second end. The male connecting portion (11) is inserted into a female connecting portion (41) of the second member (40). A first engagement structure (15) is provided on the first member (10), and a second engagement structure (45) is provided on the second member (40) so as to be able to abut against the first engagement structure (15) in the circumferential direction. When a rotational force of a predetermined value or greater is applied to the first member (10) in a tightening direction (R1) of the screwing structure (26), one of the first engagement structure (15) and the second engagement structure (45) is plastically deformed by the other, so that the first member (10) is then rotatable in both forward and reverse directions relative to the second member (40).

Abstract: The present invention images a heartbeat strength representing the strength of pulsations (beats) on a map as a new dynamics index different from the conventional waveform numerical value. A computation section according to the present invention obtains, from time-course changes of the blood flow map obtained as a result of computation of blood flow speed, a signal intensity at a fundamental frequency determined from time-series blood flow data within a predetermined region, and calculates a heartbeat strength which represents the strength of heartbeats on the basis of the signal intensity. A display section images and displays the heartbeat strength calculated by the heartbeat strength computation section. Also, the display section displays the heartbeat strength calculated by the heartbeat strength computation section by superimposing the heartbeat strength on a combined map created by averaging a plurality of blood flow maps arranged in a chronological order.

Abstract: A blood flow image diagnosing device of the present invention includes a laser light irradiation system for applying laser light to an observation region of a biotissue having blood cells; a light receiving section having a plurality of pixels and adapted to detect reflection light from the observation region of the biotissue; an image capturing section for successively capturing a plurality of images on the basis of a signal from the light receiving section; an image storage section for storing the plurality of images; a computation section for computing the speed of blood flow within the biotissue from time course changes of output signals of the pixels throughout the stored images; and a display section for displaying a two-dimensional distribution which is the result of the computation as a blood flow map. The computation section includes a pigment concentration correction section.

Abstract: The present invention images a heartbeat strength representing the strength of pulsations (beats) on a map as a new dynamics index different from the conventional waveform numerical value. A computation section according to the present invention obtains, from time-course changes of the blood flow map obtained as a result of computation of blood flow speed, a signal intensity at a fundamental frequency determined from time-series blood flow data within a predetermined region, and calculates a heartbeat strength which represents the strength of heartbeats on the basis of the signal intensity. A display section images and displays the heartbeat strength calculated by the heartbeat strength computation section. Also, the display section displays the heartbeat strength calculated by the heartbeat strength computation section by superimposing the heartbeat strength on a combined map created by averaging a plurality of blood flow maps arranged in a chronological order.

Abstract: In a MEMS device (1), a first drive portion (40) is divided into a first drive section (41) and a second drive section (42). A second drive portion (50) is divided into a third drive section (51) and a fourth drive section (52). The first drive section, the second drive section, the third drive section, and the fourth drive section are controlled for driving independently of each other to incline an optical component (10).

Abstract: A blood flow image diagnosing device of the present invention includes a laser light irradiation system for applying laser light to an observation region of a biotissue having blood cells; a light receiving section having a plurality of pixels and adapted to detect reflection light from the observation region of the biotissue; an image capturing section for successively capturing a plurality of images on the basis of a signal from the light receiving section; an image storage section for storing the plurality of images; a computation section for computing the speed of blood flow within the biotissue from time course changes of output signals of the pixels throughout the stored images; and a display section for displaying a two-dimensional distribution which is the result of the computation as a blood flow map.

Abstract: A blood flow image diagnosis device which diagnoses a blood flow map by separating, on the basis of a plurality of blood flow maps covering a specified time including one or more cardiac beats, a blood flow of a surface layer blood vessel observed in a surface layer in an observation region of a body tissue from a background blood flow of a peripheral background region. The device distinguishably displays a first blood flow map of the surface layer blood vessel and a second blood flow map of the background blood flow. The device calculates and compares information on a blood flow including blood flow value, blood flow waveform, or blood vessel diameter in the first and second blood flow maps, and displays the calculated information.

Abstract: There is provided a vibrating mirror element capable of inhibiting flexural deformation of a support portion. This vibrating mirror element (100) includes a mirror portion (10), a deformable driving portion (41, 43, 45, 51, 53, 55), and a support portion (42, 44, 46, 52, 54, 56) connected with a first connecting portion (41c, 43d, 45d, 51c, 53d, 55d) of the driving portion on the side of a first end portion (42a, 44a, 46a, 52a, 54a, 56a), while the thickness of the support portion is larger than the thickness of the driving portion.

Abstract: In a MEMS device (1), a first drive portion (40) is divided into a first drive section (41) and a second drive section (42). A second drive portion (50) is divided into a third drive section (51) and a fourth drive section (52). The first drive section, the second drive section, the third drive section, and the fourth drive section are controlled for driving independently of each other to incline an optical component (10).

Abstract: In a personal authentication method using the subcutaneous bloodstream measurement where an expanded laser beam is irradiated onto a finger pad, light reflected from a subcutaneous blood vessel layer is imaged on an image sensor as a laser speckle using an optical system, a quantity that represents the rate of change with respect to time of the amount of light received for each pixel of the laser speckle is calculated, the values are used as a two-dimensional map to obtain a map showing the bloodstream of the finger pad, and the bloodstream map is comparison-checked against pre-registered data of individuals, the laser speckle is imaged on the image sensor using a region separate from a region irradiated by the laser beam as an observation region of the image sensor. A device for use in the method is also provided. Relating to a method and device for authentication using, e.g., a finger print pattern on the basis of the laser speckle, an improved technique capable of extracting, e.g.

Abstract: Individual authentication method and apparatus therefor, wherein at least one information out of an eyeground blood vessel image information obtained by an optical means, eyeground blood flow distribution image information obtained by using a laser, and information relating to the change over time thereof is compared and collated with personal information registered in advance, and at least the one information out of the eyeground blood vessel image information, the eyeground blood flow distribution image information, and the information relating to the change over time thereof within a measurement field of view obtained in a direction of a line of sight fixed by a fixation target registered in advance is compared and collated with the personal information registered in advance.

Abstract: This vibrating mirror element includes a pair of first beam portions supporting a mirror portion in a vibratile manner, a pair of second beam portions connected with the pair of first beam portions respectively, and a pair of driving portions connected with the pair of second beam portions respectively. The mirror portion is arranged in a region surrounded by the pair of second beam portions and the pair of driving portions. The width of the pair of first beam portions and the width of the pair of second beam portions are rendered smaller than the width of the pair of driving portions.

Abstract: There is provided a vibrating mirror element capable of inhibiting flexural deformation of a support portion. This vibrating mirror element (100) includes a mirror portion (10), a deformable driving portion (41, 43, 45, 51, 53, 55), and a support portion (42, 44, 46, 52, 54, 56) connected with a first connecting portion (41c, 43d, 45d, 51c, 53d, 55d) of the driving portion on the side of a first end portion (42a, 44a, 46a, 52a, 54a, 56a), while the thickness of the support portion is larger than the thickness of the driving portion.

Abstract: A personal authentication method comprising imaging, on an image sensor as a laser speckle using an optical system, light reflected from retinal blood vessels of the ocular fundus and a blood vessel layer in ocular fundus internal tissue when a laser beam is expanded and made to irradiate the ocular fundus, calculating a quantity that represents the rate of change with respect to time of the amount of light received for each pixel of the laser speckle, obtaining an ocular fundus blood flow map as a two-dimensional map of the numerical values of the quantity, and comparison-checking against pre-registered personal data utilizing at least one, observed in the blood flow map, of blood flow distribution data, a pattern reflecting the course of retinal blood vessels, a pattern reflecting the course of blood vessels in ocular fundus internal tissue observed superimposed thereon, and data on changes thereof over time, and a device therefor.

Abstract: A vibrating mirror element includes a base member, a substrate made of metal, integrally formed with a mirror portion, a movable portion swingably supporting the mirror portion from both sides and functioning as a lower electrode, and a mounting portion supporting the movable portion and mounted on the base member, a piezoelectric film provided on the movable portion of the substrate and vibrating the mirror portion by application of a periodic voltage, and an upper electrode provided on the piezoelectric film.

Abstract: The present invention provides a blood flow image diagnosis device comprising: a laser beam irradiation system that irradiates an observation region of a body tissue with a laser beam; a light receiving system having a light receiver including a large number of pixels that detects reflected light from the observation region of the body tissue; an image capture section that continuously captures a plurality of images for a specified time that is one or more cardiac beats on the basis of a signal from the light receiver; an image storage section that stores the plurality of images; an arithmetic section that calculates a blood flow rate in the body tissue from the time variation of the output signal of each pixel corresponding to the plurality of the stored images; and a display section that displays the two-dimensional distribution of the calculation result as a blood flow map; wherein the blood flow image diagnosis device has a function for analyzing the blood flow map, the arithmetic section has a function t