Motion analysis method, motion analysis device, and storage device

Abstract

A motion analysis device includes a data analysis section adapted to generate analysis data related to a hit surface of a sporting device using an output of an inertial sensor, and a score analysis section adapted to weight the analysis data from the data analysis section to score the evaluation of a hit direction. The data analysis section generates the analysis data including at least two of a first deviation angle formed at impact between the hit surface and a virtual vertical plane to a hit target direction, a second deviation angle formed between the hit surface at the impact and a virtual vertical plane to a tangential direction at the impact touching a trajectory of the hit surface, and a deviation amount of a hit position at the impact from a virtual reference position set on the hit surface.

What is claimed is: 
     
         1 . A motion analysis method comprising:
 obtaining, using an output of an inertial sensor, analysis data including
 a first angle formed at impact between a hit surface of a sporting device and a virtual vertical plane to a hit target direction, 
 a second angle formed between the hit surface at the impact and a virtual vertical plane to a tangential direction touching a trajectory of the hit surface at the impact, and 
 a length from a virtual reference position set on the hit surface to a hit position at the impact; and 
   performing scoring using at least two of the analysis data.   
     
     
         2 . The motion analysis method according to  claim 1 , wherein
 the scoring is performed using the first angle and the length while weighting the first angle and the length, and   a weighting factor for the first angle is higher than a weighting factor for the length.   
     
     
         3 . The motion analysis method according to  claim 1 , wherein
 the scoring is performed using the second angle and the length while weighting the second angle and the length, and   a weighting factor for the length is higher than a weighting factor for the second angle.   
     
     
         4 . The motion analysis method according to  claim 1 , wherein
 the scoring is performed using the first angle, the second angle, and the length while weighting the first angle, the second angle, and the length,   a weighting factor for the first angle is higher than a weighting factor for the length, and   the weighting factor for the length is higher than a weighting factor for the second angle.   
     
     
         5 . A motion analysis method comprising:
 obtaining, using an output of an inertial sensor,
 first analysis data related to a hit direction by a hit surface of a sporting device, and 
 second analysis data related to a range of a hit ball; and 
   performing scoring using the first analysis data and the second analysis data.   
     
     
         6 . The motion analysis method according to  claim 5 , wherein
 the scoring is performed using the first analysis data and the second analysis data while weighting the first analysis data and the second analysis data, and   a weighting factor for the first analysis data is higher than a weighting factor for the second analysis data.   
     
     
         7 . The motion analysis method according to  claim 6 , wherein
 the first analysis data includes at least either one of
 a first angle formed at impact between the hit surface and a virtual vertical plane to a hit target direction, 
 a second angle formed between the hit surface at the impact and a virtual vertical plane to a tangential direction at the impact touching a trajectory of the hit surface, and 
 a length from a virtual reference position set on the hit surface to a hit position at the impact, and 
   the second analysis data includes at least either one of
 a speed of the hit surface at the impact, 
 one of a swing width from a swing starting position to a swing switchback position, and a swing width from the swing switchback position to a hit position at the impact, 
 a third angle between a tilt angle of the hit surface at the impact to a vertical plane and a reference tilt angle, and 
 a fourth angle formed between a tangential direction at the impact touching a trajectory of the hit surface projected on a vertical plane, and the hit target direction projected on the vertical plane. 
   
     
     
         8 . The motion analysis method according to  claim 7 , wherein
 a weighting factor for one of the speed and the swing width is higher than a weighting factor for one of the third angle and the fourth angle.   
     
     
         9 . The motion analysis method according to  claim 1 , wherein
 assuming the analysis data as R and a target value of the R as T, a target range based on the T is set as Tz, and   the following is fulfilled:
 assuming a score of the R as Ps, 
 a highest point as P, 
 a scale factor as S, and 
 a target zone evaluation value as Ta, 
 Ps=P−(1−Ta)×S; and 
 Ta=[Tz−(|T−R|)]/Tz. 
   
     
     
         10 . A motion analysis device comprising:
 a data analysis section adapted to generate analysis data related to a hit surface of a sporting device using an output of an inertial sensor; and   a score analysis section adapted to perform scoring using the analysis data generated by the data analysis section,   wherein the analysis data includes at least two of
 a first angle formed at impact between the hit surface and a virtual vertical plane to a hit target direction, 
 a second angle formed between the hit surface at the impact and a virtual vertical plane to a tangential direction at the impact touching a trajectory of the hit surface, and 
 a length from a virtual reference position set on the hit surface to a hit position at the impact. 
   
     
     
         11 . The motion analysis device according to  claim 10 , wherein
 the analysis data includes the first angle and the length,   the scoring is performed using the first angle and the length while weighting the first angle and the length, and   a weighting factor for the first angle is higher than a weighting factor for the length.   
     
     
         12 . The motion analysis device according to  claim 10 , wherein
 the analysis data includes the second angle and the length,   the scoring is performed using the second angle and the length while weighting the second angle and the length, and   a weighting factor for the length is higher than a weighting factor for the second angle.   
     
     
         13 . The motion analysis device according to  claim 10 , wherein
 the analysis data includes
 the first angle, 
 the second angle, and 
 the length, 
   the scoring is performed using the first angle, the second angle, and the length while weighting the first angle, the second angle, and the length,   a weighting factor for the first angle is higher than a weighting factor for the length, and   the weighting factor for the length is higher than a weighting factor for the second angle.   
     
     
         14 . A motion analysis device comprising:
 a first data analysis section adapted to generate first analysis data related to a hit direction by a hit surface of a sporting device using an output of an inertial sensor;   a second data analysis section adapted to generate second analysis data related to a range of a hit ball hit by the hit surface using the output of the inertial sensor; and   a score analysis section adapted to perform scoring using the first analysis data and the second analysis data.   
     
     
         15 . The motion analysis device according to  claim 14 , wherein
 the scoring is performed using the first analysis data and the second analysis data while weighting the first analysis data and the second analysis data, and   a weighting factor for the first analysis data is higher than a weighting factor for the second analysis data.   
     
     
         16 . The motion analysis device according to  claim 15 , wherein
 the first analysis data includes at least either one of
 a first angle formed at impact between the hit surface and a virtual vertical plane to a hit target direction, 
 a second angle formed between the hit surface at the impact and a virtual vertical plane to a tangential direction at the impact touching a trajectory of the hit surface, and 
 a length from a virtual reference position set on the hit surface to a hit position at the impact, and 
   the second analysis data includes at least either one of
 a speed of the hit surface at the impact, 
 one of a swing width from a swing starting position to a swing switchback position, and a swing width from the swing switchback position to a hit position at the impact, 
 a third angle between a tilt angle of the hit surface at the impact to a vertical plane and a reference tilt angle, and 
 a fourth angle formed between a tangential direction at the impact touching a trajectory of the hit surface projected on a vertical plane, and the hit target direction projected on the vertical plane. 
   
     
     
         17 . The motion analysis device according to  claim 16 , wherein
 a weighting factor for one of the speed and the swing width is higher than a weighting factor for one of the third angle and the fourth angle.   
     
     
         18 . A storage device storing a motion analysis program adapted to make a computer execute a process comprising:
 generating analysis data related to a hit surface of a sporting device using an output of an inertial sensor; and   performing scoring using at least two of the analysis data including
 a first angle formed at impact between the hit surface and a virtual vertical plane to a hit target direction, 
 a second angle formed between the hit surface at the impact and a virtual vertical plane to a tangential direction at the impact touching a trajectory of the hit surface, and 
 a length from a virtual reference position set on the hit surface to a hit position at the impact. 
   
     
     
         19 . A storage device storing a motion analysis program adapted to make a computer execute a process comprising:
 generating first analysis data related to a hit direction by a hit surface of a sporting device using an output of an inertial sensor;   generating second analysis data related to a range of a hit ball hit by the hit surface using the output of the inertial sensor; and   performing scoring using the first analysis data and the second analysis data.