Abstract: A motion analysis method includes: acquiring velocity information of a prescribed part of a golf club when a ball is hit; acquiring actual flying distance information which relates to an actual hit-ball flying distance; acquiring set meeting rate information which is set by a user; acquiring calculated flying distance information which is calculated based on the velocity information of a prescribed part of the golf club when a ball is hit and the set meeting rate information; and comparing the actual flying distance and the calculated flying distance.

Abstract: A swing analyzing device includes at least an angular velocity sensor, a data acquiring unit, and a motion detecting unit. The angular velocity sensor detects angular velocities generated about a plurality of axes by a swing. The data acquiring unit acquires detection data of the angular velocity sensor. The motion detecting unit detects at least one of motions of the swing. Particularly, the motion detecting unit includes an angular velocity calculating unit which calculates the sum of the magnitudes of the angular velocities generated about the plurality of respective axes using the acquired detection data.

Abstract: A swing analyzing device includes at least an angular velocity sensor, a data acquiring unit, and a motion detecting unit. The angular velocity sensor detects angular velocities generated about a plurality of axes by a swing. The data acquiring unit acquires detection data of the angular velocity sensor. The motion detecting unit detects at least one of motions of the swing. Particularly, the motion detecting unit includes an angular velocity calculating unit which calculates the sum of the magnitudes of the angular velocities generated about the plurality of respective axes using the acquired detection data.

Abstract: A sensor unit includes a measuring section and a sampling-rate switching section configured to switch a sampling rate at which the measuring section performs measurement. The measuring section performs the measurement at a first sampling rate in a standstill period of a user and, in a motion period of the user, switches, with the sampling-rate switching section, the sampling rate to a second sampling rate and performs the measurement. The first sampling rate is lower than the second sampling rate.

Abstract: A motion analysis system includes an analysis control device that analyzes a motion of a measurement target using measurement data from a plurality of measurement units including an angular velocity sensor, and the analysis control device receives measurement data based on a first rotational motion around a first rotation axis of the measurement target from the plurality of measurement units when an axis intersecting a perpendicular line with respect to a first plane in a space including the measurement target is set as the first rotation axis, and tunes azimuths on the first plane in the plurality of measurement units using the measurement data based on the first rotational motion.

Abstract: A motion analysis system includes an analysis control device that receives measurement data of physical quantities based on a motion of a measurement subject from a plurality of measuring units, calculates, for each of the measuring units, a first calculation value based on the physical quantities, determines, as timing of an impact in the motion, time when a value based on the first calculation value satisfies a predetermined condition, synchronizes, on the basis of the timing of the impact, the measurement data generated by the plurality of measuring units, and analyzes the motion of the measurement subject.

Abstract: [Problem] To provide a pile foundation and a pile foundation installation method for which the manufacturing to transporting of structural members and installation work at the site are simple and inexpensive, mass production and cost reduction are possible, and frost damage countermeasures and frost heaving countermeasures can be effectively performed. [Solution] A pile foundation (1), on top of which a structural object is placed, supported at the ground surface (F) by a plurality of batter piles (3), has a pile foundation body (2) comprising a lower plate (21) disposed on the bottom side, an upper plate (22) disposed on the top side, and a support post (23) for supporting the lower plate (21) and the upper plate (22), separated by a prescribed gap, to be substantially parallel. A plurality of piling holes (24), through which each of the batter piles (3) pass through in a downward direction in a substantially radial form, are formed in the lower plate (21) and the upper plate (22).

Abstract: A motion analysis apparatus includes a first calculation unit that calculates a first vector on a node in an absolute coordinate system using an output from a first inertial sensor attached to one of two rigid bodies linked by the node having a multiple degrees of freedom, a second calculation unit that calculates a second vector on the node in the absolute coordinate system using an output from a second inertial sensor attached to the other one of the rigid bodies; and a third calculation unit that calculates a difference in directions of the first vector and the second vector.

Abstract: A motion analysis device has a determination unit which uses an output from an inertial sensor mounted on at least one of a subject and a tool operated by the subject, to determine a dominant hand of the subject in a swing. The determination unit can determine the dominant hand on the basis of the sign of angular velocity or acceleration from the inertial sensor. A calculation unit which calculates motion analysis information in a swing, using an output from the inertial sensor can add dominant hand information from the determination unit to the motion analysis information. The motion analysis device can include a coincidence determination unit which determines that a first subject and a second subject have different dominant hands, and an inverted image generation unit which inverts first motion analysis information in the case of no coincidence.

Abstract: A motion analyzing method includes: acquiring location information of at least one of a sporting tool and a subject in swing motion based on an inertial force generated by the swing motion in time series; acquiring analysis information of the swing motion based on the inertial force; acquiring a time when the analysis information is switched with respect to a preset threshold value; and correlating information of the time with the location information and outputting the information.

Abstract: When a sporting tool or a subject changes from a first state (e.g., address state) to a second state (during swing), a detection part detects, within a plane orthogonal to a first direction (y-axis) in which a shaft part of the sporting tool extends, a rotation angle ?xn or ?zn at which the sporting tool or the subject changes around an axis in a second direction or a third direction orthogonal to each other (x-axis or z-axis) using output of an inertial sensor.

Abstract: A designation unit designates a checkpoint of sporting equipment on which a swing motion is performed. A first calculation unit calculates a movement path of the sporting equipment, which is being swung, using an output of an inertial sensor. A second calculation unit calculates a posture of an interest part of the sporting equipment at the checkpoint using the output of the inertial sensor up to the checkpoint on the movement path of the sporting equipment. The display unit displays the posture of the interest part of the sporting equipment at the checkpoint.

Abstract: A motion analysis method includes: specifying plural operations included in a motion operation using an output from an inertial sensor; calculating an operating time of each of the plural operations; adjusting a time axis of each operating time; and outputting operation information of the operation based on the adjusted time axis.

Abstract: A plug-in card storage device includes a plug-in card including a memory to store received input data and an error correction circuit to be equipped electrically connectable to the memory and to correct an error in the input data outputted from the memory; a device main body to have the plug-in card implemented therein; and a processor to determine whether or not to activate the error correction circuit, by calculating a reliability index value of the plug-in card based on an error rate of the memory provided in the plug-in card implemented in the device main body, so as to approximate the reliability index value to a reference value.

Abstract: In a motion analysis device, a first detection section detects a first state of a shaft portion of sporting equipment using an output of an inertial sensor. The first state corresponds to, for example, a resting state. A second detection section detects a second state of the shaft portion of the sporting equipment using the output of the inertial sensor. The second state corresponds to, for example, an impact. The second detection section detects a relative rotational angle of the shaft portion having varied around an axis of the shaft portion from the first state.

Abstract: In a motion analysis method, an impact point analysis section identifies a posture of a hitting area of sporting equipment at impact using an output of an inertial sensor. A determination section determines a type of a course of a hit ball using information of the posture of the hitting area thus identified. The course of the hit ball is estimated with the posture of the hitting area at impact. The type of the course of the hit ball is determined in accordance with the posture of the hitting area.

Abstract: A motion analysis method includes calculating a change in an amount of inertia of a region attached with an inertial sensor during a swing using an output of the inertial sensor, and identifying a maximum value of the amount of inertia during the swing to compare the maximum value and the amount of inertia at an impact with each other. A deceleration timing during the swing of the region (the grip of the sporting equipment) attached with the inertial sensor is identified, and the quality of the swing can be evaluated.

Abstract: A swing analyzing device includes at least an angular velocity sensor, a data acquiring unit, and a motion detecting unit. The angular velocity sensor detects angular velocities generated about a plurality of axes by a swing. The data acquiring unit acquires detection data of the angular velocity sensor. The motion detecting unit detects at least one of motions of the swing. Particularly, the motion detecting unit includes an angular velocity calculating unit which calculates the sum of the magnitudes of the angular velocities generated about the plurality of respective axes using the acquired detection data.

Abstract: A swing analyzing device includes at least an angular velocity sensor, a data acquiring unit, and a motion detecting unit. The angular velocity sensor detects angular velocities generated about a plurality of axes by a swing. The data acquiring unit acquires detection data of the angular velocity sensor. The motion detecting unit detects at least one of motions of the swing. Particularly, the motion detecting unit includes an angular velocity calculating unit which calculates the sum of the magnitudes of the angular velocities generated about the plurality of respective axes using the acquired detection data.

Abstract: A golf swing analysis device includes a joint force calculation section and a torque extraction section. The joint force calculation section generates a double pendulum model that includes a first link that corresponds to an upper part of a body of a golfer, a second link that corresponds to a golf club, and a joint that links the first link and the second link, and calculates a joint force applied to the joint along with a swing motion using an acceleration measured by an inertial sensor attached to the golf club. The torque extraction section extracts a torque that causes the second link to make a rotational motion around a first axis from the joint force.