Shaft behavior automatic measuring system
First Claim
1. A shaft behavior automatic measuring system for measuring the behavior of a shaft in a golf club as the golf club undergoes a swinging movement imparted by a swing actor, the system comprising:
- a metal member provided on a surface of the shaft in the golf club and a Doppler radar;
the Doppler radar including at least one transmitting portion for emitting a radar wave to the metal member in the golf club during the swinging movement and at least three receiving portions for receiving the radar wave reflected from the metal member;
whereina distance between the Doppler radar and the metal member throughout the swinging movement is at least 0.5 m and no more than 8 m; and
whereinthe wave emitted by the Doppler radar has (1) a beam width in a horizontal direction that includes the horizontal range of the movement of the metal member and (2) a beam width in a vertical direction that includes the vertical range of movement of the metal member; and
a calculating portion for calculating three-dimensional coordinates of the metal member based on a signal received by the at least three receiving portions.
3 Assignments
0 Petitions
Accused Products
Abstract
A shaft behavior automatic measuring system 2 according to the present invention includes a metal member 14 provided on a surface of a shaft 8 in a golf club 4, and a radar device 6 to be a Doppler radar. The radar device 6 has at least one transmitting portion for emitting a radar wave to the metal member 14 in the golf club 4 during a swing and at least three receiving portions 16 for receiving the radar wave reflected from the metal member 14. The shaft behavior automatic measuring system 2 includes a calculating portion for calculating three-dimensional coordinates of the metal member 14 based on a signal received by the at least three receiving portions 16. A coating material containing metal powder, a resin sheet containing metal powder, a metallic foil and a metallic thin film are taken as an example of the metal member 14.
34 Citations
8 Claims
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1. A shaft behavior automatic measuring system for measuring the behavior of a shaft in a golf club as the golf club undergoes a swinging movement imparted by a swing actor, the system comprising:
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a metal member provided on a surface of the shaft in the golf club and a Doppler radar; the Doppler radar including at least one transmitting portion for emitting a radar wave to the metal member in the golf club during the swinging movement and at least three receiving portions for receiving the radar wave reflected from the metal member;
whereina distance between the Doppler radar and the metal member throughout the swinging movement is at least 0.5 m and no more than 8 m; and
whereinthe wave emitted by the Doppler radar has (1) a beam width in a horizontal direction that includes the horizontal range of the movement of the metal member and (2) a beam width in a vertical direction that includes the vertical range of movement of the metal member; and a calculating portion for calculating three-dimensional coordinates of the metal member based on a signal received by the at least three receiving portions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification