WO2013076980A1 - ゴルフクラブヘッドの挙動計測装置および挙動計測方法、打撃具の挙動計測装置および挙動計測方法 - Google Patents

ゴルフクラブヘッドの挙動計測装置および挙動計測方法、打撃具の挙動計測装置および挙動計測方法 Download PDF

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Publication number
WO2013076980A1
WO2013076980A1 PCT/JP2012/007478 JP2012007478W WO2013076980A1 WO 2013076980 A1 WO2013076980 A1 WO 2013076980A1 JP 2012007478 W JP2012007478 W JP 2012007478W WO 2013076980 A1 WO2013076980 A1 WO 2013076980A1
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WO
WIPO (PCT)
Prior art keywords
golf club
data
behavior
respect
measurement
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PCT/JP2012/007478
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English (en)
French (fr)
Japanese (ja)
Inventor
三枝 宏
Original Assignee
横浜ゴム株式会社
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Application filed by 横浜ゴム株式会社 filed Critical 横浜ゴム株式会社
Priority to KR1020147012005A priority Critical patent/KR101476274B1/ko
Publication of WO2013076980A1 publication Critical patent/WO2013076980A1/ja

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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00Training appliances or apparatus for special sports
    • A63B69/36Training appliances or apparatus for special sports for golf
    • A63B69/3623Training appliances or apparatus for special sports for golf for driving
    • A63B69/3632Clubs or attachments on clubs, e.g. for measuring, aligning
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B19/00Teaching not covered by other main groups of this subclass
    • G09B19/003Repetitive work cycles; Sequence of movements
    • G09B19/0038Sports
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00Measuring of physical parameters relating to sporting activity
    • A63B2220/50Force related parameters
    • A63B2220/58Measurement of force related parameters by electric or magnetic means

Definitions

  • the present invention relates to a golf club head behavior measuring device and behavior measuring method, and a hitting tool behavior measuring device and behavior measuring method.
  • the following are provided as techniques for measuring the behavior of a golf club that is swung by a golfer. That is, the marker provided on the golf club head is continuously multiple-photographed at constant time intervals from two different directions, and the feature points of the marker are extracted from the captured image. And what calculates the time series data of the position and direction of a three-dimensional shape model of a golf club head based on the extracted marker feature point is proposed (refer to patent documents 1). In addition, a swing measurement method has been proposed in which a magnetic sensor is attached to the grip portion of a golf club and the movement trajectory and direction of the grip end are measured (see Patent Document 2).
  • the measurement range is limited to a very limited area before and after the impact, and the swing is measured over a wide range. That's not enough.
  • a golf club being swung is photographed using a plurality of cameras, there is a disadvantage that a large facility is required and a large installation space is required.
  • information on the movement of the grip portion and the orientation of the shaft is only obtained, and there is a disadvantage that the behavior of the golf club head cannot be measured.
  • the same disadvantage can be considered when the behavior of a striking tool such as a baseball bat is measured according to the same principle as described above.
  • the present invention has been made in view of such circumstances, and an object thereof is to provide a golf club head behavior measuring device that is advantageous in accurately measuring the behavior of a golf club head while simplifying the configuration. And providing a behavior measuring method. Another object of the present invention is to provide a striking tool behavior measuring apparatus and a behavior measuring method that are advantageous in accurately measuring the striking tool behavior while simplifying the configuration.
  • the present invention provides a golf club head behavior measuring device for measuring the behavior of a golf club head of the golf club when a golfer swings the golf club, and is provided at a predetermined position.
  • a transmitter configured to generate a magnetic field having a known strength and direction distribution, and fixed to the golf club, having a first measurement point and a first measurement direction, around the first measurement point.
  • the magnetism is detected in three axial directions orthogonal to each other, and the first measurement direction is determined according to the three-dimensional position of the first measurement point with respect to a predetermined reference position and the direction of the first measurement direction with respect to the predetermined reference direction.
  • a golf club side three-dimensional magnetic sensor that outputs a detection signal of 1 and a three-dimensional shape model that reproduces the golf club head in a three-dimensional coordinate system are described.
  • Storage means holding means for holding the golf club so as to meet the set lie angle and loft angle, and the holding means holding the golf club with respect to the first measurement point.
  • First calibration data for obtaining three-dimensional position data of a predetermined reference point of the golf club head and orientation data indicating the orientation of the face surface of the golf club head with respect to the first measurement direction are obtained as first calibration data.
  • One calibration means three-dimensional position data of the first measurement point with respect to the reference position generated based on the first detection signal in the process of swinging the golf club by a golfer, and the first with respect to the reference direction.
  • Measured data consisting of direction data indicating the direction of one measurement direction is used as the first calibration data.
  • a first time-series data generating means for generating first time-series data by correcting using the first-time data, and a golf ball installation position where the golf ball is installed with respect to the reference position.
  • the second calibration data indicating the direction of the target line connecting the golf ball installation position with respect to the reference direction and the target point hitting the golf ball.
  • Behavior data indicating the behavior of the golf club head based on the second time series data generating means for generating the time series data, the second time series data, and the three-dimensional shape model of the golf club head. It is characterized by comprising behavior data generating means for generating.
  • the present invention is also a golf club head behavior measuring device for measuring the behavior of the golf club head of the golf club when the golfer swings the golf club, which is installed at a predetermined position and relates to strength and direction.
  • a transmitter for generating a magnetic field having a known distribution, and three axes fixed to the golf club, having a first measurement point and a first measurement direction, and perpendicular to each other around the first measurement point And detecting a direction, and outputting a first detection signal according to a three-dimensional position of the first measurement point with respect to a predetermined reference position and a direction of the first measurement direction with respect to a predetermined reference direction.
  • a golf club side three-dimensional magnetic sensor a storage means storing a three-dimensional shape model reproducing the golf club head in a three-dimensional coordinate system; Holding means for holding the golf club so as to follow the lie angle and loft angle, and the golf club head with respect to the first measurement point in a state where the golf club is held by the holding means.
  • a first calibration means for obtaining, as first calibration data, three-dimensional position data of the obtained reference point and orientation data indicating the orientation of the face surface of the golf club head with respect to the first measurement direction;
  • the three-dimensional position data of the first measurement point with respect to the reference position and the orientation of the first measurement direction with respect to the reference direction generated based on the first detection signal in the process of swinging the golf club
  • the measured data consisting of the orientation data shown is corrected using the first calibration data
  • the behavior of the golf club head Behavior data generating means for generating behavior data indicating the reference position, the reference position and the reference direction are determined by the transmitter, and the holding means holds the golf club with respect to the reference position.
  • the reference point coincides with a predetermined position, the orientation of the face surface is directed in a predetermined direction with respect to the reference direction, and the reference point is set with respect to the golf ball installation position where the golf ball is installed.
  • the face surface is oriented in a predetermined direction with respect to a target line.
  • the present invention also relates to a golf club head behavior measuring method for measuring the behavior of the golf club head of the golf club when the golfer swings the golf club.
  • the golf club head behavior measuring method is installed at a predetermined position and relates to strength and direction.
  • the three-dimensional position data of the first measurement point with respect to the reference position generated based on the first detection signal in the process of swinging the golf club by a golfer and the first measurement direction with respect to the reference direction
  • Actual measurement data composed of direction data indicating the direction is used as the first calibration data.
  • the first time-series data generating step for generating the first time-series data by correcting the first time-series data, and the first time-series data indicating the golf ball installation position where the golf ball is installed with respect to the reference position 3
  • a second time series is corrected by using second calibration data indicating a dimension position and a direction of a target line connecting the golf ball installation position with respect to the reference direction and a target point hitting the golf ball.
  • Behavior generating data indicating behavior of the golf club head based on a second time series data generating step for generating data, the second time series data, and a three-dimensional shape model of the golf club head And a data generation step.
  • the present invention also relates to a golf club head behavior measuring method for measuring the behavior of the golf club head of the golf club when the golfer swings the golf club.
  • the golf club head behavior measuring method is installed at a predetermined position and relates to strength and direction.
  • a transmitter for generating a magnetic field having a known distribution, and three axes fixed to the golf club, having a first measurement point and a first measurement direction, and perpendicular to each other around the first measurement point And detecting a direction, and outputting a first detection signal according to a three-dimensional position of the first measurement point with respect to a predetermined reference position and a direction of the first measurement direction with respect to a predetermined reference direction.
  • a golf club side three-dimensional magnetic sensor a storage means storing a three-dimensional shape model reproducing the golf club head in a three-dimensional coordinate system; Holding means for holding the golf club so as to follow the lie angle and loft angle, and the golf club head with respect to the first measurement point in a state where the golf club is held by the holding means.
  • the three-dimensional position data of the first measurement point with respect to the reference position generated based on the first detection signal in the process of swinging the golf club by a golfer and the first measurement direction with respect to the reference direction
  • Actual measurement data composed of direction data indicating the direction is used as the first calibration data.
  • the golf club head based on a first time series data generating step for generating first time series data by correcting the first time series data, the first time series data, and a three-dimensional shape model of the golf club head.
  • Behavior data generation step for generating behavior data indicating the behavior of the golf club, wherein the reference position and the reference direction are determined by the transmitter, and the holding means holds the golf club with respect to the reference position.
  • the point coincides with a predetermined position, the orientation of the face surface is in a predetermined direction with respect to the reference direction, and the reference with respect to the golf ball installation position where the golf ball is installed.
  • the point coincides with a predetermined position, and the golf ball installation position with respect to the reference direction and the golf ball are hit.
  • the direction of the face surface is directed in a predetermined direction with respect to the direction of the target line connecting the target point to be performed.
  • the present invention is also a striking instrument behavior measuring device for measuring a striking instrument behavior when a player swings a striking instrument that strikes a competition ball, and is installed at a predetermined position,
  • the first detection signal is detected according to the three-axis direction and the three-dimensional position of the first measurement point with respect to a predetermined reference position and the direction of the first measurement direction with respect to the predetermined reference direction.
  • Actual measurement data composed of three-dimensional position data of the first measurement point with respect to the reference position and orientation data indicating the orientation of the first measurement direction with respect to the reference direction is corrected using the first calibration data.
  • a first time-series data generating means for generating first time-series data, and the first time-series data is converted into the reference position.
  • the present invention is also a striking instrument behavior measuring method for measuring a striking instrument behavior when a player swings a striking instrument for striking a competition ball, the striking instrument being installed at a predetermined position, A transmitter for generating a magnetic field having a known distribution with respect to a direction, and fixed to the impact tool, having a first measurement point and a first measurement direction, and the magnetism around the first measurement point being orthogonal to each other
  • the first detection signal is detected according to the three-axis direction and the three-dimensional position of the first measurement point with respect to a predetermined reference position and the direction of the first measurement direction with respect to the predetermined reference direction.
  • the storage means in which the three-dimensional shape model reproducing the impact tool is stored, and the impact tool is held so as to have a set posture.
  • Holding means and in a state where the hitting tool is held by the holding means, three-dimensional position data of a predetermined reference point of the hitting tool with respect to the first measuring point, and the first measuring direction Based on the first detection signal in the process of swinging the hitting tool by the player, and the first calibration step of acquiring the orientation data indicating the orientation of the face surface of the hitting tool with respect to the Measured data consisting of three-dimensional position data of the first measurement point with respect to the reference position and direction data indicating the direction of the first measurement direction with respect to the reference direction, and the first calibration data.
  • a first time-series data generating step for generating first time-series data by correcting using the first time-series data;
  • a second time-series data generating step for generating second time-series data by correcting using the second calibration data indicating the direction of the target line, the second time-series data, and the impact
  • a behavior data generation step of generating behavior data indicating the behavior of the impact tool based on a three-dimensional shape model of the tool.
  • time series data composed of three-dimensional position data and orientation data of a golf club head is obtained using a transmitter and a golf club side three-dimensional magnetic sensor, and time series data and golf club head 3 are obtained. Based on the three-dimensional shape model, behavior data indicating the behavior of the golf club head during the swing is obtained. Therefore, it is advantageous in accurately measuring the behavior of the golf club head while simplifying the configuration and saving space.
  • time series data including the three-dimensional position data and the orientation data of the golf club head is obtained using the transmitter and the striking instrument side three-dimensional magnetic sensor. Based on the three-dimensional shape model, behavior data indicating the behavior of the hitting tool during the swing was obtained. Therefore, it is advantageous in accurately measuring the behavior of the hitting tool while simplifying the configuration and saving space.
  • FIG. 2 is a plan view showing a state in which a face surface 402 of a golf club head 4 is applied to a positioning plate 2008.
  • FIG. It is A arrow directional view of FIG. It is a B arrow view of FIG. 2 is a block diagram showing a configuration of a measurement system 11.
  • FIG. 2 is a block diagram showing a configuration of a personal computer 22.
  • FIG. 3 is a functional block diagram of the behavior measuring apparatus 10.
  • FIG. 2 is a block diagram showing a configuration of a measurement system 11.
  • FIG. 2 is a block diagram showing a configuration of a personal computer 22.
  • FIG. It is a functional block diagram of 10 A of behavior measuring apparatuses. It is a flowchart which shows operation
  • FIG. 1 is an explanatory diagram showing a configuration of a golf club head behavior measuring device 10 (hereinafter referred to as a behavior measuring device 10).
  • the behavior measuring apparatus 10 is installed and used in, for example, a golf driving range or a golf shop.
  • the behavior measuring apparatus 10 includes a measuring system 11, a holding unit 20, a personal computer, and the like. And a computer 22.
  • the measurement system 11 measures time-series data indicating the three-dimensional position and direction (direction) of the golf club head 4 of the golf club 2.
  • the measurement system 11 includes a transmitter 12, a golf club side three-dimensional magnetic sensor 14, a holding means side three-dimensional magnetic sensor 16, and a controller / data processing device 18.
  • the transmitter 12 is installed at a predetermined position. As shown in FIG. 7, the transmitter 12 is wound in a loop shape in the directions of three axes (X axis, Y axis, Z axis) orthogonal to each other. It is composed of three coils. In the present embodiment, the transmitter 12 is installed such that the X axis and the Y axis extend on a horizontal plane, and the Z axis faces the vertical direction. In the present embodiment, the center position of the transmitter 12 is set as a predetermined reference position 1202, and the Y-axis direction passing through the reference position 1202 is set as a predetermined reference direction 1204. The transmitter 12 generates a magnetic field whose distribution with respect to strength and direction is known by a drive signal supplied from the controller / data processor 18.
  • the golf club side three-dimensional magnetic sensor 14 is composed of three coils wound in a loop shape in three directions (X axis, Y axis, Z axis) orthogonal to each other. .
  • the golf club side three-dimensional magnetic sensor 14 has a first measurement point 1402 and a first measurement direction 1404.
  • the golf club side three-dimensional magnetic sensor 14 senses the magnetism around the first measurement point 1402 in the three axis directions of the X axis, the Y axis, and the Z axis that are orthogonal to each other, and the first measurement point with respect to the reference position 1202.
  • the first detection signal S1 is output according to the three-dimensional position 1402 and the direction of the first measurement direction 1404 with respect to the reference direction 1204.
  • the first measurement point 1402 is the center position of the golf club side three-dimensional magnetic sensor 14, and the first measurement direction 1404 is the Y-axis direction passing through the first measurement point 1402.
  • the golf club side three-dimensional magnetic sensor 14 is fixed to the golf club 2, and is fixed to the grip portion 3 of the golf club 2 in the present embodiment.
  • the golf club side three-dimensional magnetic sensor 14 has the Y axis (first measurement direction 1404) parallel to the striking direction of the golf club 2 and the Z axis parallel to the shaft axis.
  • the holding means side three-dimensional magnetic sensor 16 is constituted by three coils wound in a loop shape in the directions of three axes (X axis, Y axis, Z axis) orthogonal to each other. .
  • the holding means side three-dimensional magnetic sensor 16 has a second measurement point 1602 and a second measurement direction 1604.
  • the holding means side three-dimensional magnetic sensor 16 senses the magnetism around the second measurement point 1602 in the three axis directions of the X axis, the Y axis, and the Z axis that are orthogonal to each other, and one of the three axis directions.
  • the second detection signal S2 according to the three-dimensional position of the second measurement point 1602 with respect to the reference position 1202 and the direction of the second measurement direction 1604 with respect to the reference direction 1204, with the Y axis that is Is output.
  • the second measurement point 1602 is the center position of the holding means side three-dimensional magnetic sensor 16
  • the second measurement direction 1604 is the Y-axis direction passing through the second measurement point 1602.
  • the holding means side three-dimensional magnetic sensor 16 is integrally supported by the holding means 20.
  • the holding means side three-dimensional magnetic sensor 16 makes the Y axis (second measurement direction 1604) parallel to the striking direction of the golf club 2, and the Z axis is directed vertically, as will be described later. ing.
  • An example of such a measurement system 11 is LIBERTY (manufactured by Polhemus). The detailed configuration of the measurement system 11 will be described later.
  • the holding means 20 holds the golf club 2 so that the set lie angle and loft angle are met.
  • the holding unit 20 includes a base 2002, a frame 2004, a support portion 2006, and a positioning plate 2008.
  • the base 2002 is placed on the floor (horizontal plane).
  • the frame 2004 is erected from the base 2002.
  • the support portion 2006 is provided on the frame 2004 and supports the shaft 6 of the golf club 2 so that the shaft 6 can be attached and detached and the position and orientation of the golf club 2 can be adjusted.
  • Various types of conventionally known structures can be used as the support portion 2006.
  • FIG. 4 is a plan view showing a state in which the face surface 402 of the golf club head 4 is applied to the positioning plate 2008
  • FIG. 5 is a view as seen from the arrow A in FIG. 4
  • FIG. 6 is a view as seen from the arrow B in FIG.
  • the positioning plate 2008 has a rectangular plate shape, and is attached to the base 2002 via a spacer 2010 so as to extend on a horizontal plane.
  • the symbol G indicates the floor surface.
  • the positioning plate 2008 is formed to extend linearly so that an edge portion 2008A having a sharp cross section on one side thereof is parallel to the horizontal plane.
  • a reference line 2012 passing through the center in the extending direction of the edge portion 2008A and orthogonal to the edge portion 2008A is displayed.
  • a holding means side three-dimensional magnetic sensor 16 is provided on the upper surface of the positioning plate 2008.
  • the second measurement point 1602 is located on the reference line 2012 and the second measurement direction 1604 is coincident (parallel) with the reference line 2012 in a state in plan view.
  • the golf club 2 has a support portion 2006 so that the lie angle and the loft angle are set in a state where the face surface 402 is applied to the edge portion 2008A so that the edge portion 2008A passes through the center point 410 of the face surface 402. Supported by.
  • that the golf club 2 is on the set lie angle and loft angle is a state in which the normal of the face surface 402 and the launch direction are parallel to each other, and a vertical line
  • the angle formed by the shaft axis is the correct lie angle
  • the golf club 2 can be supported according to the set lie angle by adjusting the support portion 2006 so that the score line 412 and the edge portion 2008A are parallel to each other.
  • the score line 412 is not formed on the face surface 402 as in some putter clubs, the virtual line extending in the left-right width direction of the face surface 402 and the edge portion 2008A are parallel to each other.
  • the support portion 2006 By adjusting the support portion 2006, the golf club 2 can be supported according to the set lie angle.
  • the second measurement of the three-dimensional position of the center point 410 of the face surface 402 and the orientation of the face surface 402 and the holding means side three-dimensional magnetic sensor 16 are performed.
  • the point 1602 and the direction of the second measurement direction have a known relationship. Accordingly, the three-dimensional position of the center point 410 of the face surface 402 and the orientation of the face surface 402 can be obtained from the orientations of the second measurement point 1602 and the second measurement direction 1604.
  • the controller / data processor 18 includes a drive circuit 18A, a detection circuit 18B, and a computer 18C.
  • the drive circuit 18 ⁇ / b> A generates a drive signal for causing the transmitter 12 to sequentially generate predetermined three types of magnetic fields, and supplies the drive signal to the transmitter 12.
  • the detection circuit 18B detects the first detection signal S1 supplied from the golf club side three-dimensional magnetic sensor 14 and the second detection signal S2 supplied from the holding means side three-dimensional magnetic sensor 16. .
  • the computer 18C implements the following functions by executing data processing software. That is, the computer 18C controls the drive circuit 18A and the detection circuit 18B, performs data processing from the output voltage obtained from the detection circuit 18B, and the position and orientation of the golf club side three-dimensional magnetic sensor 14 and the holding means. Data indicating the position and orientation of the side three-dimensional magnetic sensor 16 is generated. As described above, the computer 18C calculates the time series data of the three-dimensional position coordinates (x, y, z) with the position of the transmitter 12 as the reference position 1202 and the three axes X, Y, Z orthogonal to each other as a reference. And output.
  • the computer 18C sets the Y-axis direction centering on the transmitter 12 as the reference direction 1204, and the attitude angle indicating the orientation of the magnetic sensors 14 and 16 with respect to the reference direction 1204, that is, the yaw angle, the pitch angle, and the roll
  • the time series data of the corners (hereinafter referred to as ( ⁇ y, ⁇ p, ⁇ r)) is calculated and output. Therefore, the time-series data of the three-dimensional position coordinates (x, y, z) is data indicating the positions of the magnetic sensors 14 and 16, and the time-series data of the yaw angle ⁇ y, the pitch angle ⁇ p, and the roll angle ⁇ r is the magnetic sensor 14. , 16 data indicating the direction.
  • the drive circuit 18A outputs the same signal whose frequency and phase are always constant according to the command signal of the computer 18C, and sequentially excites the three loop coils wound around the three axes of the transmitter 12.
  • Each loop-like coil generates a different magnetic field each time it is excited, and based on this, an independent output voltage V is generated in each of the three loop-like coils wound in the three-axis direction of the golf club side three-dimensional magnetic sensor 14.
  • an independent output voltage V is generated in each of the three loop-like coils wound in the three-axis direction of the golf club side three-dimensional magnetic sensor 14.
  • the transmitter 12 that forms the magnetic field is fixedly installed at a predetermined position, the distribution regarding the strength and direction of the generated magnetic field is known with respect to the reference position 1202 where the transmitter 12 is installed and the reference direction 1204. .
  • the three-dimensional position coordinates (x, y, z) of the golf club side three-dimensional magnetic sensor 14 with respect to the reference direction position 1202 and the attitude with respect to the reference direction 1204 Six unknowns of angles ( ⁇ y, ⁇ p, ⁇ r) can be obtained.
  • the nine output voltages V sent from the detection circuit 18B are used to calculate the three-dimensional position coordinates (x, y, z) and the posture angles ( ⁇ y, ⁇ p, ⁇ r). Calculate the data.
  • the three-dimensional position coordinates (x, y, z) and posture angles ( ⁇ y, ⁇ p, ⁇ r) obtained by the measurement system 11 are taken into the personal computer 22 and AD-converted, and the behavior of the grip part 3 during the swing is detected. Time series data can be obtained.
  • the three-dimensional position coordinates (x, y, z) of the second measuring point 1602 of the holding means side three-dimensional magnetic sensor 16 with respect to the reference direction 1202 and the attitude angle of the second measuring direction 1604 with respect to the reference direction 1204 (The generation of the data of [theta] y, [theta] p, [theta] r) is basically the same as in the case of the golf club side three-dimensional magnetic sensor 14, and thus the description thereof is omitted.
  • the golf club side three-dimensional magnetic sensor 14 is set so that one axis (Z axis) of the three axis directions coincides with the shaft axis, and the other axis (Y axis) is set to golf. It is preferable that the golf club 2 is fixed to the grip portion 3 in the hitting direction of the club 2. Further, the holding means side three-dimensional magnetic sensor 16 is preferably supported by the holding means 20 with one of the three axis directions (Y axis) directed in the striking direction of the golf club 2.
  • the transmitter 12 has the X axis and the Y axis extending in the horizontal plane, and the Z axis extending in the vertical direction.
  • the personal computer 22 generates behavior data indicating the behavior of the golf club head 2 based on the time-series data supplied from the measurement system 11.
  • FIG. 8 is a block diagram showing the configuration of the personal computer 22.
  • the personal computer 22 includes a CPU 30, a ROM 32, a RAM 34, a hard disk device 36, a disk device 38, a keyboard 40, a mouse 42, a display 44, a printer 46, and an input / output interface 48 connected via an interface circuit (not shown) and a bus line.
  • Etc. The ROM 32 stores a control program and the like, and the RAM 34 provides a working area.
  • the hard disk device 36 stores a dedicated program for measuring the behavior of the golf club head 4.
  • the disk device 38 records and / or reproduces data on a recording medium such as a CD or a DVD.
  • the keyboard 40 and the mouse 42 receive operation inputs from the operator.
  • the display 44 displays and outputs data
  • the printer 46 prints and outputs data.
  • the display 44 and the printer 46 output data.
  • the input / output interface 48 exchanges data with the controller / data processing device 18 of the measurement system 11.
  • FIG. 9 is a functional block diagram of the behavior measuring apparatus 10.
  • the behavior measuring apparatus 10 functionally includes a first calibration unit 50, a second calibration unit 52, a first time series data generation unit 53, a second time series data generation unit 54, a storage unit 56, a behavior.
  • the data generation means 58, the output means 60, etc. are comprised.
  • the first calibration unit 50, the second calibration unit 52, the first time series data generation unit 53, and the second time series data generation unit 54 are configured by the controller / data processing device 18 and the personal computer 22.
  • the storage unit 56, the behavior data generation unit 58, and the output unit 60 are configured by the personal computer 22.
  • first and second calibration means 50 and 52 a part of the first and second time-series data generation means 53 and 54, a behavior data generation means 58, and an output means 60 are included in the CPU 30.
  • these portions may be configured by hardware such as a circuit.
  • the transmitter 12 is installed at a predetermined position, and specifically, is fixedly arranged behind a person who performs golf swing.
  • a ball placement position P0 for placing the golf ball B is determined in advance, and this ball placement position P0 is displayed by a mark or the like provided on the floor G. .
  • a tee is provided at the ball placement position P0, and the golf ball B is placed on the tee.
  • a cup C as a target for launching the golf ball B is provided in front of the ball placement position P0.
  • the golfer swings the golf club 2 to hit the golf ball B placed at the ball placement position P0 by the face surface 402 of the golf club head 4 toward the cup C.
  • a straight line connecting the center point P1 (FIG. 10) of the golf ball B placed at the ball placement position P0 and the cup C is the target line L.
  • a sufficient interval is secured between the transmitter 12 and the ball placement position P ⁇ b> 0 so that the transmitter 12 does not interfere with the golfer or the golf club 2.
  • the first calibration unit 50 is configured to perform the first detection based on the first detection signal S1 and the second detection signal S2 while the golf club 2 is held by the holding unit 20.
  • the three-dimensional position data of the center point 410 of the face surface 402 is data obtained using the first measurement point 1402 as the origin of the three-dimensional coordinates
  • the orientation data of the face surface 402 is the first measurement direction 1404.
  • Is obtained as a coordinate axis (Y-axis) of three-dimensional coordinates. That is, based on the first detection signal S 1 and the second detection signal S 2, the three-dimensional position data of the second measurement point 1602 with respect to the first measurement point 1402 and the first measurement direction 1404 relative to the first measurement direction 1404. Data of two measurement directions 1604 are obtained.
  • the three-dimensional position of the center point 410 of the face surface 402 and the orientation of the face surface 402 are obtained from the orientation of the second measurement point 1602 and the second measurement direction 1604.
  • the orientation data of the face surface 402 can be obtained as the first calibration data Dc1. That is, the first calibration data Dc1 is used to correct the position of the center point 410 of the face surface 402 with respect to the first measurement point 1402 and to correct the orientation (direction) of the face surface 402 with respect to the orientation of the first measurement direction 1404. It is data for performing.
  • the second calibration means 52 matches the center point P1 of the golf ball B where the second measurement point 1602 is located at the ball placement position P0 in a plan view.
  • the second measurement direction 1604 is relative to the reference position 1202 based on the second detection signal S2.
  • the three-dimensional position data of the second measurement point 1602 and the orientation data indicating the orientation of the second measurement direction 1604 with respect to the reference direction 1204 are obtained as the second calibration data Dc2.
  • the three-dimensional position data of the second measurement point 1602 is data obtained using the reference position 1202 as the origin of the three-dimensional coordinates
  • the direction data of the second measurement direction 1604 is the reference direction 1204 of the three-dimensional coordinates. Is obtained as the coordinate axis (Y-axis). That is, the second calibration data Dc2 is data for correcting the installation position of the golf ball B with respect to the reference position 1202 and correcting the direction of the target line L with respect to the reference direction 1204.
  • the first time-series data generating means 53 includes the three-dimensional position data of the first measurement point 1402 and the reference with respect to the reference position 1202 generated based on the first detection signal S1 in the process of swinging the golf club 2 by the golfer.
  • the first time-series data D1 is generated by correcting the actual measurement data including the orientation data indicating the orientation of the first measurement direction 1404 with respect to the direction 1204 using the first calibration data Dc1.
  • the second time-series data generating means 54 generates the second time-series data D2 by correcting the first time-series data D1 using the second calibration data Dc2.
  • the storage means 56 stores a three-dimensional shape model M that reproduces two golf club heads in a three-dimensional coordinate system.
  • the storage unit 56 stores the three-dimensional shape model M in association with the three-dimensional position of the center point 410 of the face surface 402 and the orientation of the face surface 402.
  • the loft angle of the golf club head 4 and the diameter of the golf ball B are registered in the storage unit 56 in advance.
  • the storage unit 56 is configured by the hard disk device 36 or the RAM 34 of the personal computer 22.
  • the behavior data generating means 58 generates behavior data D3 indicating the behavior of the golf club head 4 based on the second time series data D2 and the three-dimensional shape model M of the golf club 2 head.
  • the behavior data generation means 58 includes a calculation unit 58A that calculates time series data of the position and orientation of the three-dimensional shape model M, and an analysis unit 58B that obtains behavior data D3 from the time series data. It is configured.
  • the behavior data D3 will be further described.
  • the behavior data D3 includes the following data.
  • Movement locus data as time series data indicating the movement locus of the golf club head 4:
  • the movement trajectory data is indicated by the movement trajectory of the center point 410 of the face surface 402 (FIGS. 17 and 18) or animation data indicating the outer shape of the golf club head 4 (FIG. 19). .
  • the orientation data Df includes a hitting face angle ⁇ , a hitting loft angle ⁇ , and a hitting lie angle ⁇ .
  • the face angle ⁇ at the time of hitting is such that the normal H passing through the center point 410 of the face surface 402 and the target line L immediately before the face surface 402 hits the golf ball B are in a horizontal plane. Is projected by the angle formed by the normal H and the target line L on the horizontal plane.
  • the hitting loft angle ⁇ intersects the normal H passing through the center point 410 of the face surface 402 immediately before the face surface 402 hits the golf ball B and the normal H as shown in FIG. This is indicated by an angle formed between a horizontal plane (floor surface G) and a parallel plane.
  • the generation of the hitting loft angle ⁇ by the behavior data generating unit 58 is performed based on the second time-series data D2 and the loft angle of the golf club head 4 registered in the storage unit 56 in advance.
  • the lie angle ⁇ at the time of hitting is an extension line of the shaft shaft 602 immediately before the face surface 402 hits the golf ball B and a horizontal plane where the extension line intersects (in this example, It is indicated by the angle formed by the floor surface G).
  • step S12 first calibration step. That is, the first calibration means 50, based on the first detection signal S1 and the second detection signal S2, the three-dimensional position data of the center point 410 of the face surface 402 with respect to the first measurement point 1402 and the first detection signal S2. Orientation data indicating the orientation of the face surface 402 of the golf club head 4 with respect to one measurement direction 1404 is obtained as first calibration data Dc1.
  • Step S14 holding means positioning step. That is, as shown in FIGS. 4 and 5, the second measurement point 1602 of the holding means side three-dimensional magnetic sensor 16 in the plan view is the center point P1 of the golf ball B positioned at the ball placement position P0.
  • the holding means 20 is positioned so that the second measurement direction 1604 matches the target line L.
  • step S ⁇ b> 14 the holding means 20 that has been positioned in the vicinity of the transmitter 12 in step S ⁇ b> 10 is moved to the ball mounting position P ⁇ b> 0 that is separated from the transmitter 12.
  • step S16 second calibration step. That is, the second calibration data Dc2 is obtained when the holding unit 20 is moved to the ball placement position P0 (the second measurement point 1602 matches the ball placement position P0 and the second measurement direction 1604 is The three-dimensional position and direction of the holding means side three-dimensional magnetic sensor 16 with respect to the transmitter 12 (in a state of matching with the target line L) are shown.
  • step S16 the holding means 20 is moved from the ball placement position P0 to a position that does not interfere with the swing of the golf club 2.
  • the golf ball B is placed at the ball placement position P ⁇ b> 0, and the golfer swings the golf club 2 and strikes the golf ball B toward the cup C.
  • the first time-series data generating unit 53 corrects the actual measurement data generated based on the first detection signal S1 by using the first calibration data Dc1, thereby making the first time.
  • Is generated step S18: first time-series data generation step. That is, by correcting the actual measurement data using the first calibration data Dc1, the first data is composed of the three-dimensional position data of the center point 410 of the face surface 402 with respect to the transmitter 12 and the orientation data indicating the orientation of the face surface 402. Time series data D2 is generated. However, since the first time series data D1 is not corrected for the ball placement position P0 and the target line L, the first time series data D1 is not yet accurate.
  • the second time-series data generating unit 54 generates the second time-series data D2 by correcting the first time-series data D1 using the second calibration data Dc2 (step S20: Second time series data generation step). That is, by correcting the first time series data D1 using the second calibration data Dc2, accurate second time series data D2 corrected for the ball placement position P0 and the target line L is obtained. can get.
  • the behavior data generating means 58 generates behavior data D3 indicating the behavior of the golf club head 2 based on the second time series data D2 and the three-dimensional shape model M of the golf club head read from the storage means 56.
  • Step S22 Behavior data generation step. That is, the behavior data generating unit 58 generates a three-dimensional shape model based on time-series data including the three-dimensional position data of the center point 410 of the face surface 402 and the orientation data indicating the orientation of the face surface 402 obtained in step S20. By moving M in the virtual space, behavior data D3 is generated.
  • the output means 60 outputs the behavior data D3 (step S24: output step). That is, the output means 60 displays the behavior data D3 as a display screen of the display 44 or prints out the data by the printer 46. Note that after the first and second calibrations are performed once for the golf club 2 to be used, the processes in steps S10, S12, S14, and S16 can be omitted, and the processes in and after step S18 may be performed. In addition, when the ball placement position P0 or the target line L is changed, the processes of steps S10 and S12 are omitted, and only S14 and subsequent steps are performed.
  • FIG. 16 is an explanatory diagram of a display screen showing the hit point position as the behavior data D3.
  • the hit point position 420 is displayed as a mark on the face surface 402 of the golf club head 4.
  • the number of marks corresponding to the number of measurements is displayed.
  • FIG. 17 is an explanatory diagram of a display screen showing a movement locus in the vertical direction of the center point 410 of the face surface 402 of the face surface 402 as the behavior data D3. That is, in FIG. 17, the horizontal axis indicates the distance along the launch direction of the golf ball B, and the vertical axis indicates the distance in the height direction. A center point 410 of the face surface 402 of the face surface 402 of the golf club head 4 is indicated by a mark (for example, a circle).
  • FIG. 18 is an explanatory diagram of a display screen showing a movement locus in the left-right direction of the center point 410 of the face surface 402 of the face surface 402 as the behavior data D3. That is, in FIG. 18, the horizontal axis indicates the distance along the launch direction of the golf ball B, and the vertical axis indicates the distance in the left-right direction orthogonal to the launch direction of the golf ball B. As in FIG. 17, the center point 410 of the face surface 402 of the face surface 402 of the golf club head 4 is indicated by a mark (for example, a circle). FIGS. 17 and 18 show the measurement results of one time. However, when the measurement is performed a plurality of times, if the color or shape of the mark indicating the center point 410 of the face surface 402 is changed, each movement locus is changed. Is preferable for easy identification.
  • FIG. 19 is an explanatory diagram of a display screen showing the movement trajectory of the golf club head 4 as the behavior data D3.
  • the movement trajectory of the golf club head 4 is shown by displaying a plurality of images in a perspective view of the golf club head 4 in an overlapping manner.
  • the display screens shown in FIGS. 16 to 19 may be printed out by the printer 46.
  • the movement trajectory of the golf club head 4 may be displayed as an animation image by displaying the images of the perspective view of the golf club head 4 one by one with the passage of time. Further, FIG.
  • the display method is arbitrary, such as switching to a displayed animation image.
  • numerical values such as the left and right approach angle ⁇ LR , the vertical approach angle ⁇ UD , the hitting face angle ⁇ , the hitting loft angle ⁇ , and the hitting lie angle ⁇ as the behavior data D3 are displayed on the display screen of the display 44 in a table format. It can be displayed or printed out by the printer 46.
  • the transmitter 12 and the golf club side three-dimensional magnetic sensor 14 are used to obtain the second time series data D2 composed of the three-dimensional position data and the orientation data of the golf club head 4, Based on the second time series data D2 and the three-dimensional shape model M of the golf club head 4, behavior data D3 indicating the behavior of the golf club head 4 during the swing is obtained. Therefore, an imaging device such as a camera is not required as compared with the conventional technology using image data, and it is not necessary to secure an imaging space. Therefore, while simplifying the configuration, saving space and reducing costs, a golf club This is advantageous in accurately measuring the behavior of the head 4. Further, the measurement range of the golf club head 4 can be secured wider than the conventional technique using image data, and measurement can be performed over the entire swing.
  • the actual measurement data generated based on the first detection signal S1 detected by the golf club side three-dimensional magnetic sensor 14 is corrected by using the first calibration data Dc1.
  • the first time series data D1 is generated, and the first time series data D1 is corrected by using the second calibration data Dc2, thereby generating the second time series data D2. That is, by correcting the first time series data D1 using the second calibration data Dc2, accurate second time series data D2 corrected for the ball placement position P0 and the target line L is obtained. I tried to get it. Therefore, when the ball placement position P0 or the target line L is changed, accurate second time-series data D2 can be obtained by acquiring the second calibration data Dc2.
  • the golf club side three-dimensional magnetic sensor 14 and the holding means side three-dimensional magnetic sensor 16 at a location close to the transmitter 12, the first calibration data Dc1 can be obtained with high accuracy. This is advantageous in increasing the accuracy of the behavior data D3.
  • the ball position measuring three-dimensional magnetic sensor may be provided separately from the holding means side three-dimensional magnetic sensor 16, and the second calibration data Dc2 may be obtained using the ball position measuring three-dimensional magnetic sensor. That is, the ball position measuring three-dimensional magnetic sensor has a third measuring point and a third measuring direction, and senses magnetism around the third measuring point in three axial directions orthogonal to each other, A third detection signal is output according to the three-dimensional position of the second measurement point with respect to the reference position and the direction of the third measurement direction with respect to the reference direction.
  • the third measurement point matches the predetermined ball installation position P0, and the direction in the third measurement direction connects the ball installation position P0 and the target point of the golf ball.
  • the ball position measuring three-dimensional magnetic sensor is positioned so as to match the direction of the line L.
  • the second calibration unit 52 indicates the three-dimensional position data of the third measurement point with respect to the reference position 1202 and the direction of the third measurement direction with respect to the reference direction 1204 based on the third detection signal.
  • the orientation data is acquired as the second calibration data Dc2.
  • the three-dimensional magnetic sensor for measuring the ball position may be provided separately from the holding means side three-dimensional magnetic sensor 16, but the holding means side three-dimensional magnetic sensor 16 is used as in the present embodiment.
  • the configuration can be simplified and the cost can be reduced. It will be advantageous.
  • the golf club side three-dimensional magnetic sensor 14 is provided in the grip portion 3 of the golf club 2, but the golf club side three-dimensional magnetic sensor 14 may be provided in the golf club head 6.
  • the golf club side three-dimensional magnetic sensor 14 is not conspicuous, and it is difficult to interfere with the swinging. It becomes advantageous in raising.
  • the present invention is based on the premise that the relationship between the relative position and orientation between the golf club side three-dimensional magnetic sensor 14 and the golf club head 4 does not change. Therefore, since the measurement error is large in the golf club 2 in which the shaft 6 is largely bent and twisted, the golf club to be measured in the present invention is preferably a putter club or a club used for approach shots.
  • the behavior data D3 can be obtained using the data D1. Therefore, if the above condition is satisfied, the behavior data D3 can be obtained without using the second calibration data Dc2, and the holding means side three-dimensional magnetic sensor 16 for obtaining the second calibration data Dc2 can be obtained. Can be omitted.
  • a golf club head behavior measuring device in which the holding means side three-dimensional magnetic sensor 16 is omitted will be described. In the following embodiments, the same parts and members as those in the first embodiment will be denoted by the same reference numerals, and the description thereof will be omitted or will be briefly described.
  • the measuring system 11 includes a transmitter 12, a golf club side three-dimensional magnetic sensor 14, and a controller / data processing device 18.
  • the transmitter 12 is configured similarly to the first embodiment.
  • the transmitter 12 is installed at a predetermined position. Specifically, the transmitter 12 is installed at a location near the ball mounting position P0.
  • the X axis and Y axis of the transmitter 12 extend on the horizontal plane and the Z axis faces the vertical direction, and the center position of the transmitter 12 is determined in advance.
  • a reference position 1202 is set, and a Y-axis direction passing through the reference position 1202 is set as a predetermined reference direction 1204.
  • the reference position 1202 with respect to the ball placement position P0 is fixed, and the reference direction 1204 with respect to the target line L is fixed.
  • the golf club side three-dimensional magnetic sensor 14 is configured in the same manner as in the first embodiment, and has a first measurement point 1402 and a first measurement direction 1404, and the first measurement point with respect to the reference position 1202.
  • the first detection signal S1 is output according to the three-dimensional position 1402 and the direction of the first measurement direction 1404 with respect to the reference direction 1204.
  • the first measurement point 1402 is the center position of the golf club side three-dimensional magnetic sensor 14, and the first measurement direction 1404 is the Y-axis direction passing through the first measurement point 1402.
  • the golf club side three-dimensional magnetic sensor 14 is fixed to the vicinity of the club head 4 on the shaft 6 of the golf club 2.
  • the golf club side three-dimensional magnetic sensor 14 has the Y axis (first measurement direction 1404) parallel to the striking direction of the golf club 2 and the Z axis parallel to the shaft axis.
  • the holding means 20 is configured in the same manner as in the first embodiment except that the holding means side three-dimensional magnetic sensor 16 is omitted, and the golf club 2 has a set lie angle and loft angle. Is to hold.
  • the golf club is held by the holding means 20 so as to satisfy the following conditions. 1)
  • the center point 410 (FIG. 6) of the face surface 402, which is a predetermined reference point of the golf club head 4, with respect to the reference position 1202 of the transmitter 12 matches the predetermined position. 2)
  • the face surface 402 is oriented in a predetermined direction with respect to the reference direction 1204 of the transmitter 12. 3)
  • the center point 410 (reference point) matches the predetermined position with respect to the golf ball installation position P0.
  • the face surface 402 is oriented in a predetermined direction with respect to the direction of the target line L connecting the golf ball installation position P0 with respect to the reference direction 1204 of the transmitter 12 and the target point C where the golf ball is hit.
  • the three-dimensional position of the center point 410 of the face surface 402 and the orientation of the face surface 402 with respect to the reference position 1202 and the reference direction 1204 of the transmitter 12 are known. It becomes the relationship. Therefore, the three-dimensional position of the center point 410 of the face surface 402 and the orientation of the face surface 402 can be obtained from the orientations of the first measurement point 1402 and the first measurement direction 1404.
  • the controller / data processor 18 detects only the first detection signal S1 from the golf club side three-dimensional magnetic sensor 14, and therefore the reference position of the first measurement point 1402 of the golf club side three-dimensional magnetic sensor sensor 14 is detected. Except for generating only the time-series data of the three-dimensional position coordinates (x, y, z) with respect to 1202 and the posture angle ( ⁇ y, ⁇ p, ⁇ r) with respect to the reference direction 1204 of the first measurement direction 1404, the first The configuration is the same as in the embodiment.
  • the three-dimensional position coordinates (x, y, z) and posture angles ( ⁇ y, ⁇ p, ⁇ r) obtained by the measurement system 11 are taken into the personal computer 22 and AD-converted, and the behavior of the shaft 6 portion during swinging is taken. Can be obtained.
  • the personal computer 22 generates behavior data indicating the behavior of the golf club head 2 based on the time-series data supplied from the measurement system 11, and is configured in the same manner as in the first embodiment.
  • FIG. 22 is a functional block diagram of the behavior measuring apparatus 10.
  • the behavior measuring apparatus 10 is functionally configured to include a first calibration unit 50, a first time series data generation unit 53, a storage unit 56, a behavior data generation unit 58, an output unit 60, and the like.
  • the first calibration unit 50, the first time-series data generation unit 53, the controller / data processing device 18, and the personal computer 22 are configured.
  • the storage unit 56, the behavior data generation unit 58, and the output unit 60 are configured by the personal computer 22.
  • the first calibration means 50 has the golf club head 4 with respect to the first measurement point 1402 based on the first detection signal S ⁇ b> 1 in a state where the golf club 2 is held by the holding means 20.
  • This is obtained as the first calibration data Dc1.
  • the three-dimensional position data of the center point 410 of the face surface 402 is data obtained using the first measurement point 1402 as the origin of the three-dimensional coordinates
  • the orientation data of the face surface 402 is the first measurement direction 1404.
  • the first calibration data Dc1 is used to correct the position of the center point 410 of the face surface 402 with respect to the first measurement point 1402 and to correct the orientation (direction) of the face surface 402 with respect to the orientation of the first measurement direction 1404. It is data for performing.
  • the three-dimensional position data of the first measurement point 1402 is data obtained using the reference position 1202 as the origin of the three-dimensional coordinates
  • the direction data of the first measurement direction 1404 is the reference direction 1204 of the three-dimensional coordinates.
  • This is data obtained as a coordinate axis (Y axis).
  • the first calibration data Dc1 is obtained by correcting the installation position of the golf ball B with respect to the reference position 1202 and the direction of the target line L with respect to the reference direction 1204. It is also data for performing correction.
  • the first time-series data generating means 53 includes the three-dimensional position data of the first measurement point 1402 and the reference with respect to the reference position 1202 generated based on the first detection signal S1 in the process of swinging the golf club 2 by the golfer.
  • the first time-series data D1 is generated by correcting the actual measurement data including the orientation data indicating the orientation of the first measurement direction 1404 with respect to the direction 1204 using the first calibration data Dc1.
  • the storage means 56 stores a three-dimensional shape model M that reproduces two golf club heads in the three-dimensional coordinate system, as in the first embodiment.
  • the behavior data generating means 58 generates behavior data D3 indicating the behavior of the golf club head 4 based on the first time series data D1 and the three-dimensional shape model M of the golf club 2 head.
  • the behavior data D3 is generated in the same manner as in the first embodiment.
  • Step S100 holding step
  • step S102 first calibration step. That is, the first calibration means 50, based on the first detection signal S1 and the second detection signal S2, the three-dimensional position data of the center point 410 of the face surface 402 with respect to the first measurement point 1402 and the first detection signal S2. Orientation data indicating the orientation of the face surface 402 of the golf club head 4 with respect to one measurement direction 1404 is obtained as first calibration data Dc1.
  • the holding means 20 is moved from the ball placement position P0 to a position that does not interfere with the swing of the golf club 2.
  • the golf ball B is placed at the ball placement position P 0, and the golfer swings the golf club 2 and strikes the golf ball B toward the cup C.
  • the first time-series data generating unit 53 corrects the actual measurement data generated based on the first detection signal S1 by using the first calibration data Dc1, thereby making the first time.
  • Time-series data D1 is generated (step S104: first time-series data generation step). That is, by correcting the actual measurement data using the first calibration data Dc1, the first data is composed of the three-dimensional position data of the center point 410 of the face surface 402 with respect to the transmitter 12 and the orientation data indicating the orientation of the face surface 402.
  • Time series data D2 is generated.
  • the first time series data D1 is corrected with respect to the ball placement position P0 and the target line L by the correction by the first calibration data Dc1, the first time series data D1 is accurate. It has become a thing.
  • the behavior data generating means 58 generates behavior data D3 indicating the behavior of the golf club head 2 based on the first time series data D1 and the three-dimensional shape model M of the golf club head read from the storage means 56.
  • Step S106 Behavior data generation step. That is, the behavior data generating unit 58 generates a three-dimensional shape model based on time-series data including the three-dimensional position data of the center point 410 of the face surface 402 and the orientation data indicating the orientation of the face surface 402 obtained in step S20. By moving M in the virtual space, behavior data D3 is generated.
  • step S108 output step
  • the output means 60 displays the behavior data D3 as a display screen of the display 44 or prints out the data by the printer 46. Note that after the first calibration is performed once on the golf club 2 to be used, the processes in steps S10, S12, S14, and S16 can be omitted, and the processes in and after step S18 may be performed.
  • the holding means side three-dimensional magnetic sensor 16 Since the holding means side three-dimensional magnetic sensor 16 is not required as compared with the first embodiment, only the golf club side three-dimensional magnetic sensor 14 needs to be provided, thereby simplifying the configuration and reducing costs. It is advantageous in planning. 2) Since the holding means side three-dimensional magnetic sensor 16 is not required, an error component caused by an error in the mounting position of the holding means side three-dimensional magnetic sensor 16 can be removed, which is advantageous in improving measurement accuracy. .
  • the positional relationship and direction between the reference position 1202 and the reference direction 1204 of the transmitter 12, the golf ball installation position P0, and the target line L must be fixed. Therefore, when the behavior measuring apparatus 10 is installed, a plate on which the transmitter 12 is fixed is prepared, and the golf ball installation position P0 and the target line L are displayed on the plate so as to be visually recognized. Measurements can be made on the plate.
  • the data of the orientation of the ball installation position P0 and the target line L is acquired as calibration data, and this calibration is performed.
  • the first time series data D1 may be corrected using the data to obtain the second time series data D2, and the behavior data D3 may be calculated from the second time series data.
  • the hitting tool In the first embodiment, the case where the behavior of the golf club head is measured has been described. However, in other sports in which the hitting tool is swung to hit the ball for competition, the hitting tool can be flexed and twisted. For example, it is possible to measure the behavior of the hitting tool on the same principle as in the first embodiment. Examples of such a hitting tool include a baseball bat or a tennis racket.
  • a behavior measuring device that measures the behavior of a bat will be described. In the following embodiments, the same or the same parts and members as those in the first embodiment are designated by the same reference numerals, and the description thereof is omitted or simply performed.
  • FIG. 25 is an explanatory diagram showing the configuration of the bat behavior measuring apparatus 10A (hereinafter referred to as the behavior measuring apparatus 10A).
  • the behavior measuring apparatus 10A is installed and used in, for example, a batting center or a sports shop, and the behavior measuring apparatus 10A includes the measuring system 11, the holding unit 66, and a personal computer. 22.
  • the measurement system 11 measures time-series data indicating the three-dimensional position and direction (direction) of the bat 64.
  • the measurement system 11 includes a transmitter 12, a striking device side three-dimensional magnetic sensor 14A, a holding means side three-dimensional magnetic sensor 16A, and a controller / data processing device. 18 is comprised.
  • the transmitter 12 is installed at a predetermined position. As shown in FIG. 31, the transmitter 12, the striking device side three-dimensional magnetic sensor 14A, and the holding means side three-dimensional magnetic sensor 16A are each looped in the directions of three axes (X axis, Y axis, Z axis) orthogonal to each other. It is constituted by three coils wound around.
  • the configurations of the transmitter 12, the hitting tool side three-dimensional magnetic sensor 14A, and the holding means side three-dimensional magnetic sensor 16A are the same as those of the transmitter 12, the golf club side three-dimensional magnetic sensor 14, and the holding means side three-dimensional magnetism of the first embodiment. Since the configuration of each sensor 16 is the same, detailed description thereof is omitted.
  • the center position of the transmitter 12 is set as a predetermined reference position 1202, and the Y-axis direction passing through the reference position 1202 is set as a predetermined reference direction 1204.
  • the impact tool side three-dimensional magnetic sensor 14A has a first measurement point 1402 and a first measurement direction 1404, and the first measurement point 1402 with respect to the reference position 1202 and the first three-dimensional position with respect to the reference direction 1204.
  • the first detection signal S1 is output according to the direction of the measurement direction 1404.
  • the first measurement point 1402 is the center position of the impact tool side three-dimensional magnetic sensor 14A
  • the first measurement direction 1404 is the Y-axis direction passing through the first measurement point 1402.
  • the striking instrument side three-dimensional magnetic sensor 14A is fixed to the bat 64, and is fixed to the grip portion 6402 of the bat 64 in the present embodiment.
  • the striking instrument side three-dimensional magnetic sensor 14A has the Y axis (first measurement direction 1404) orthogonal to the central axis of the bat 64 (parallel to the striking direction), and the X axis is the bat 64. It is parallel to the central axis.
  • the holding means side three-dimensional magnetic sensor 16A has a second measurement point 1602 and a second measurement direction 1604, and the Y-axis, which is one of the three axis directions, is directed in the striking direction of the bat 64, and the reference
  • the second detection signal S2 is output according to the three-dimensional position of the second measurement point 1602 with respect to the position 1202 and the direction of the second measurement direction 1604 with respect to the reference direction 1204.
  • the second measurement point 1602 is the center position of the holding means side three-dimensional magnetic sensor 16 A
  • the second measurement direction 1604 is the Y-axis direction passing through the second measurement point 1602.
  • the holding means side three-dimensional magnetic sensor 16 ⁇ / b> A is integrally supported by the holding means 66. As will be described later, the holding means side three-dimensional magnetic sensor 16A has the Y axis (second measurement direction 1604) parallel to the striking direction of the bat 64 and the Z axis facing the vertical direction.
  • the holding means 66 holds the bat 64 so as to have a set posture.
  • the holding means 66 includes a base 6602, a first support frame 6604, a first support portion 6606, a second support frame 6608, a second support portion 6610, and a positioning plate 6612. It consists of The base 6602 is placed on the floor surface (horizontal plane).
  • the first frame 6604 and the second frame 6608 are erected from the base 6602.
  • the first support portion 6606 is provided at the upper end of the first frame 6604 and supports the middle portion of the bat 64 in the longitudinal direction so that it can be attached and detached and the position and orientation of the bat 64 can be adjusted.
  • the bat 64 is supported by the first support portion 6606 in an inclined state so that the tip of the bat 64 is positioned below the base end.
  • Various known structures can be used as the first support portion 6606.
  • the second support portion 6610 is provided at the upper end of the second frame 6608 and supports the striking surface 6404 of the bat 64 from below.
  • FIG. 28 shows a state in which the hitting surface 6404 of the bat 64 is applied to the positioning plate 6612 as seen from the A1 direction of FIG. 25
  • FIG. 29 is a view as seen from the arrow B1 in FIG. FIG.
  • the positioning plate 6612 has a rectangular plate shape, and is provided on the second support portion 6610 via an adjustment mechanism (not shown) that adjusts the inclination of the positioning plate 6612.
  • an edge portion 6612A having a sharp cross section is formed on one side so as to extend linearly.
  • the positioning plate 6612 is adjusted in inclination angle by the adjusting mechanism so that the edge portion 6612A and the center axis of the bat 64 are parallel to each other.
  • a holding means side three-dimensional magnetic sensor 16 ⁇ / b> A is provided on the upper surface of the positioning plate 6612.
  • the holding means side three-dimensional magnetic sensor 16 ⁇ / b> A has the second measurement point 1602 positioned on the reference line 2012 and the second measurement direction 1604 coincident (parallel) with the reference line 6614 in a state in plan view.
  • the first support portion 6606 is configured such that the bat 64 is set in a state where the hitting surface 6404 is applied to the edge portion 6612A so that the edge portion 6612A passes through a predetermined center point 6410 on the hitting surface 6404. Supported by.
  • that the bat 64 is in the set posture means that a player (batter) with a standard physique swings the bat 64 and hits the ball B passing through the approximate center of the strike zone. The state that is in the posture at the time.
  • the three-dimensional position of the center point 6410 of the hitting surface 6404 and the direction of a straight line passing through the center point 6410 perpendicular to the center axis of the bat 64 are shown.
  • the orientation of the bat 64 and the orientation of the second measurement point 1602 and the second measurement direction 1604 of the holding means side three-dimensional magnetic sensor 16A have a known relationship. Accordingly, the three-dimensional position of the center point 6410 of the ball striking surface 6404 and the direction of the bat 64 can be obtained from the directions of the second measurement point 1602 and the second measurement direction 1604.
  • the controller / data processing device 18 includes a drive circuit 18A, a detection circuit 18B, and a computer 18C, as in the first embodiment.
  • the drive circuit 18 ⁇ / b> A generates a drive signal for causing the transmitter 12 to sequentially generate predetermined three types of magnetic fields, and supplies the drive signal to the transmitter 12.
  • the detection circuit 18B detects the first detection signal S1 supplied from the impact tool side three-dimensional magnetic sensor 14A and the second detection signal S2 supplied from the holding means side three-dimensional magnetic sensor 16A. .
  • the computer 18C implements the following functions by executing data processing software. That is, the computer 18C controls the drive circuit 18A and the detection circuit 18B, performs data processing based on the output voltage obtained from the detection circuit 18B, and positions and orientations of the striking instrument side three-dimensional magnetic sensor 14A and holding means. Data indicating the position and orientation of the side three-dimensional magnetic sensor 16A is generated. As described above, the computer 18C calculates the time series data of the three-dimensional position coordinates (x, y, z) with the position of the transmitter 12 as the reference position 1202 and the three axes X, Y, Z orthogonal to each other as a reference. And output.
  • the computer 18C sets the Y-axis direction centering on the transmitter 12 as the reference direction 1204, and time-series data of posture angles ⁇ y, ⁇ p, and ⁇ r representing the directions of the magnetic sensors 14 and 16 with respect to the reference direction 1204. Is calculated and output. Therefore, the time-series data of the three-dimensional position coordinates (x, y, z) is data indicating the positions of the magnetic sensors 14 and 16, and the time-series data of the yaw angle ⁇ y, the pitch angle ⁇ p, and the roll angle ⁇ r is the magnetic sensor 14. , 16 data indicating the direction.
  • the three-dimensional position coordinates (x, y, z) and posture angles ( ⁇ y, ⁇ p, ⁇ r) obtained by the measurement system 11 are taken into the personal computer 22 and AD-converted, and the grip portion 6402 of the bat 64 is being swung.
  • the time series data of the behavior of can be obtained.
  • the three-dimensional position coordinates (x, y, z) of the second measuring point 1602 with respect to the reference direction position 1202 of the holding means side three-dimensional magnetic sensor 16A and the attitude angle of the second measuring direction 1604 with respect to the reference direction 1204 (The generation of data of [theta] y, [theta] p, [theta] r) is basically the same as in the case of the impact tool side three-dimensional magnetic sensor 14A, and thus the description thereof is omitted.
  • the transmitter 12, the striking instrument side three-dimensional magnetic sensor 14A, and the holding means side three-dimensional magnetic sensor 16A are arranged so that the coil loops in the three-axis directions orthogonal to each other as shown in FIG. It is wound into a shape. Accordingly, the three-axis directions of the transmitter 12 and the magnetic sensors 14 and 16 are matched as much as possible to detect the three-dimensional position coordinates (x, y, z) and the posture angle ( ⁇ y) detected by the magnetic sensors 14 and 16, respectively. , ⁇ p, ⁇ r) is preferable in reducing the load when the personal computer 22 described later performs the processing.
  • the striking instrument side three-dimensional magnetic sensor 14A is set so that one axis (X axis) in the three axis directions is coincident with the central axis of the bat 64, and another axis (Y axis). ) Is preferably fixed to the grip portion 6402 of the bat 64 in the striking direction of the bat 64.
  • the holding means side three-dimensional magnetic sensor 16A has one of the three axis directions (Y axis) as the bat 64. It is preferable to support the holding means 66 in the striking direction.
  • the transmitter 12 has the X axis and the Y axis extending in the horizontal plane, and the Z axis extending in the vertical direction.
  • the personal computer 22 generates behavior data indicating the behavior of the bat 64 based on the time series data supplied from the measurement system 11.
  • FIG. 32 is a block diagram showing the configuration of the personal computer 22.
  • FIG. 32 shows that the striking instrument side three-dimensional magnetic sensor 14A and the holding means side three-dimensional magnetic sensor 16A are provided in the measuring system 11, and a dedicated program for the hard disk device 36 to measure the behavior of the bat 64. Is the same as that of the first embodiment (FIG. 8) except that it is stored, and detailed description thereof is omitted.
  • FIG. 33 is a functional block diagram of the behavior measuring apparatus 10A. Similar to the first embodiment, the behavior measuring apparatus 10A includes a first calibration unit 50, a second calibration unit 52, a first time series data generation unit 53, a second time series data generation unit 54, The storage unit 56, the behavior data generation unit 58, the output unit 60, and the like are included.
  • the transmitter 12 is installed at a predetermined position. Specifically, the transmitter 12 is fixedly arranged behind the player swinging the bat 64. On the floor G, a tee 62 is installed, and a ball B is placed on the upper end of the tee 62. On the floor surface G, the ball placement position P0 is displayed by a mark or the like. A tee 62 is placed on the ball placement position P0, and the ball B is placed on the upper end of the tee 62. Therefore, when viewed in plan, the center point P1 of the ball B coincides with the ball placement position P0.
  • a mark (not shown) as a target for launching the ball B is provided in front of the tee 62.
  • the player swings the bat 64 to strike the ball B placed on the tee 62 toward the target by the striking surface 6404 of the bat 64.
  • a straight line connecting the center point P1 of the ball B placed on the tee 62 and the target is the target line L.
  • a sufficient interval is secured between the transmitter 12 and the tee 62 (ball placement position P0) so that the transmitter 12 does not interfere with the player and the bat 64.
  • the first calibration unit 50 performs the first measurement based on the first detection signal S1 and the second detection signal S2 while the bat 64 is held by the holding unit 66.
  • Three-dimensional position data of the center point 6410 (FIG. 30) of the hitting surface 6404 which is a predetermined reference point of the bat 64 with respect to the point 1402, and orientation data indicating the orientation of the bat 64 of the bat 64 with respect to the first measurement direction 1404.
  • the first calibration data Dc1 is data obtained using the first measurement point 1402 as the origin of the three-dimensional coordinates
  • the orientation data of the bat 64 is the first measurement direction 1404.
  • the three-dimensional position of the center point 6410 of the ball striking surface 6404 and the direction of the bat 64 are obtained from the directions of the second measurement point 1602 and the second measurement direction 1604.
  • the first calibration data Dc1 includes the correction of the position of the center point 6410 of the ball striking surface 6404 with respect to the first measurement point 1402, and the correction of the direction (direction) of the bat 64 with respect to the direction of the first measurement direction 1404. It is data for performing.
  • the second calibration means 52 is a ball in which the second measurement point 1602 is positioned on the ball mounting position P0 (mounted on the tee 62) in a plan view.
  • the second detection signal Based on S2, the three-dimensional position data of the second measurement point 1602 with respect to the reference position 1202 and the orientation data indicating the orientation of the second measurement direction 1604 with respect to the reference direction 1204 are obtained as the second calibration data Dc2. It is.
  • the three-dimensional position data of the second measurement point 1602 is data obtained using the reference position 1202 as the origin of the three-dimensional coordinates
  • the direction data of the second measurement direction 1604 is the reference direction 1204 of the three-dimensional coordinates. Is obtained as the coordinate axis (Y-axis). That is, the second calibration data Dc2 is data for correcting the setting position of the ball B (game ball setting position) with respect to the reference position 1202 and correcting the direction of the target line L with respect to the reference direction 1204. .
  • the first time-series data generating means 53 includes the three-dimensional position data of the first measurement point 1402 and the reference direction with respect to the reference position 1202 generated based on the first detection signal S1 in the process of swinging the bat 64 by the player.
  • the first time series data D1 is generated by correcting the actual measurement data including the orientation data indicating the orientation of the first measurement direction 1404 with respect to 1204 using the first calibration data Dc1.
  • the second time-series data generating means 54 generates the second time-series data D2 by correcting the first time-series data D1 using the second calibration data Dc2.
  • the storage means 56 stores a three-dimensional shape model M that reproduces the bat 64 in a three-dimensional coordinate system.
  • the storage means 56 stores the three-dimensional shape model M in association with the three-dimensional position of the center point 6410 of the ball striking surface 6404 and the orientation of the bat 64.
  • the storage unit 56 is configured by the hard disk device 36 or the RAM 34 of the personal computer 22.
  • the behavior data generation means 58 generates behavior data D3 indicating the behavior of the bat 64 based on the second time series data D2 and the three-dimensional shape model M of the bat 64 head.
  • the behavior data generation means 58 includes a calculation unit 58A that calculates time series data of the position and orientation of the three-dimensional shape model M, and an analysis unit 58B that obtains behavior data D3 from the time series data. It is configured.
  • the behavior data D3 includes the following data.
  • Movement locus data as time series data indicating the movement locus of the bat 64:
  • the movement trajectory data is indicated by the movement trajectory of the center point 6410 of the ball striking face 6404, or is indicated by animation data indicating the outer shape of the bat 64.
  • Hit point position data indicating the location where the hitting surface 6404 hits the ball B is generated by the behavior data generating unit 58 based on the second time-series data D2, the three-dimensional shape model M, and the diameter of the ball B registered in the storage unit 56 in advance.
  • step S30 holding step
  • step S32 first calibration step. That is, the first calibration means 50, based on the first detection signal S1 and the second detection signal S2, the three-dimensional position data of the center point 6410 of the ball striking surface 6404 with respect to the first measurement point 1402, and the first Direction data indicating the direction of the bat 64 with respect to one measurement direction 1404 is obtained as first calibration data Dc1.
  • step S34 Holding means positioning step). That is, as shown in FIG. 28 and FIG. 29, the second measurement point 1602 of the holding means side three-dimensional magnetic sensor 16A is aligned with the center point P1 of the ball B located at the ball mounting position P0 in a plan view. In addition, the holding means 66 is positioned so that the second measurement direction 1604 coincides with the target line L. In step S ⁇ b> 34, the holding means 66 that has been positioned in the vicinity of the transmitter 12 in step S ⁇ b> 30 is moved to the ball mounting position P ⁇ b> 0 that is separated from the transmitter 12.
  • step S36 second calibration step. That is, the second calibration data Dc2 is obtained when the holding unit 66 is moved to the ball mounting position P0 (the second measurement point 1602 matches the ball mounting position P0 and the second measurement direction 1604 is The three-dimensional position and direction of the holding means side three-dimensional magnetic sensor 16A with respect to the transmitter 12 (in a state where the target line L is matched) are shown.
  • step S36 the holding means 66 is moved from the ball mounting position P0 to a position that does not interfere with the swing of the bat 64.
  • the first time-series data generating unit 53 corrects the actual measurement data generated based on the first detection signal S1 by using the first calibration data Dc1, thereby making the first time.
  • Is generated step S38: first time-series data generation step. That is, by correcting the actual measurement data using the first calibration data Dc1, the first time includes the three-dimensional position data of the center point 6410 of the hitting surface 6404 with respect to the transmitter 12 and the orientation data indicating the orientation of the bat 64.
  • Series data D2 is generated. However, since the first time series data D1 is not corrected for the ball placement position P0 and the target line L, the first time series data D1 is not yet accurate.
  • the second time-series data generating unit 54 generates the second time-series data D2 by correcting the first time-series data D1 using the second calibration data Dc2 (step S40: Second time series data generation step). That is, by correcting the first time series data D1 using the second calibration data Dc2, accurate second time series data D2 corrected for the ball placement position P0 and the target line L is obtained. can get.
  • the behavior data generation means 58 generates behavior data D3 indicating the behavior of the bat 64 based on the second time-series data D2 and the three-dimensional shape model M of the bat 64 read from the storage means 56 (step).
  • S42 Behavior data generation step). That is, the behavior data generation means 58 is based on the time-series data consisting of the three-dimensional position data of the center point 6410 of the hitting surface 6404 obtained in step S30 and the direction data indicating the direction of the bat 64. Is moved in the virtual space to generate behavior data D3.
  • the output means 60 outputs the behavior data D3 (step S44: output step). That is, the output means 60 displays the behavior data D3 as a display screen of the display 44 or prints out the data by the printer 46. Note that after the first and second calibrations are performed once on the bat 64 to be used, the processes of steps S30, S32, S34, and S36 can be omitted, and the processes after step S38 may be performed. In addition, when the ball placement position P0 or the target line L is changed, the processes of steps S30 and S32 are omitted, and only S14 and subsequent steps need be performed.
  • the display screen of the display 44 which shows the behavior data D3, it is the same as that of 1st Embodiment, For example, it illustrates as follows. (1) The hit point position of the hitting surface 6404 is displayed as a mark. (2) The movement locus in the vertical direction of the center point 6410 of the hitting surface 6404 is shown. (3) The movement locus in the left-right direction of the center point 6410 of the hitting surface 6404 is shown. (4) The movement locus of the bat 64 is shown by displaying a plurality of images of the perspective view of the bat 64 in a superimposed manner. (5) By displaying the images of the perspective view of the bat 64 one by one over time, the movement trajectory of the bat 64 is displayed as an animation image.
  • an imaging device such as a camera becomes unnecessary, and it is not necessary to secure an imaging space, so that the configuration is simplified and the space is saved. This is advantageous in accurately measuring the behavior of the bat 64 while reducing the cost and cost.
  • the measurement range of the bat 64 can be secured wider than the conventional technique using image data, and measurement can be performed over the entire swing.
  • the first calibration data Dc1 is obtained based on the first detection signal S1 of the striking tool side three-dimensional magnetic sensor 14A and the second detection signal S2 of the holding means side three-dimensional magnetic sensor 16A. . Therefore, it is advantageous in securing the degree of freedom in changing the installation layout of the bat 64, the transmitter 12, and the holding means 66, so that the behavior of the bat 64 can be easily measured when moving the installation location. In addition, it can be easily installed even in a place that is subject to layout restrictions such as an actual batting center. In addition, since the striking instrument side three-dimensional magnetic sensor 14A and the holding means side three-dimensional magnetic sensor 16A can be positioned in the vicinity of the transmitter 12, the first calibration data Dc1 can be obtained with high accuracy. This is advantageous in increasing the accuracy of the behavior data D3.
  • the ball position measuring three-dimensional magnetic sensor may be provided separately from the holding means side three-dimensional magnetic sensor 16A, and the second calibration data Dc2 may be obtained using the ball position measuring three-dimensional magnetic sensor. That is, the ball position measuring three-dimensional magnetic sensor has a third measuring point and a third measuring direction, and senses magnetism around the third measuring point in three axial directions orthogonal to each other, A third detection signal is output according to the three-dimensional position of the second measurement point with respect to the reference position and the direction of the third measurement direction with respect to the reference direction.
  • the third measurement point coincides with a predetermined ball installation position P0, and the direction of the third measurement direction is a target line connecting the ball installation position P0 and the target point of the ball.
  • the ball position measuring three-dimensional magnetic sensor is positioned so as to match the direction of L.
  • the second calibration unit 52 indicates the three-dimensional position data of the third measurement point with respect to the reference position 1202 and the direction of the third measurement direction with respect to the reference direction 1204 based on the third detection signal.
  • the orientation data is acquired as the second calibration data Dc2.
  • the ball position measuring three-dimensional magnetic sensor may be provided separately from the holding means side three-dimensional magnetic sensor 16A. However, as in the present embodiment, the holding means side three-dimensional magnetic sensor 16A is used.
  • the second calibration data Dc2 is obtained, in other words, if the above-described three-dimensional magnetic sensor for ball position measurement is also used by the holding means side three-dimensional magnetic sensor 16A, the configuration is simplified and the cost is reduced. It will be advantageous.
  • the striking instrument side three-dimensional magnetic sensor 14A is provided in the grip portion 6402 of the bat 64.
  • the striking instrument side three-dimensional magnetic sensor 14A may be provided in another part of the bat 64.
  • the hitting tool side three-dimensional magnetic sensor 14A is not conspicuous, and it is difficult to interfere with the swinging. It becomes advantageous in raising.
  • the hitting tool is the bat 64
  • the present invention can be widely applied to hitting tools in other ball games as long as the hitting tool can ignore deflection and twist.
  • Second calibration means 53 First time series data generation means 54. Second time series data generation Means 56...
  • D3 behavior data
  • M three-dimensional shape model
  • 10A impact tool Behavior measuring device, 62... Tee, 64... Impact tool, 6402 .. grip part, 6404 .. hitting surface, 14A .. bat side three-dimensional magnetic sensor, 16A. ... holding means.

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PCT/JP2012/007478 2011-11-24 2012-11-21 ゴルフクラブヘッドの挙動計測装置および挙動計測方法、打撃具の挙動計測装置および挙動計測方法 WO2013076980A1 (ja)

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WO2015071928A1 (ja) * 2013-11-13 2015-05-21 横浜ゴム株式会社 移動体の回転数計測装置

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JP2014062882A (ja) * 2012-09-03 2014-04-10 Yokohama Rubber Co Ltd:The 移動体の回転数計測装置
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