Hitting tool selection diagnosis system, hitting tool selection diagnosis method, and non-transitory computer-readable medium storing diagnosis program

Abstract

A measurement device outputs first and second swing measurement data values respectively dependent on operability of a hitting tool (bat) and momentum at the time of impact with a swing behavior when hitting an object (ball) with the hitting tool being employed as an input. A data analysis device generates diagnosis information for selection of a hitting tool in response to input of the first and second swing measurement data values obtained when each of three or more of hitting tools is swung. The diagnosis information is generated using a total score value calculated by integrating, using a BS value that is a weighting coefficient, a score value that is an indicator value of operability of the hitting tool calculated from the first swing measurement data value and a score value that is an indicator value of a hit-object speed calculated from the second swing measurement data value.

What is claimed is: 
     
         1 . A hitting tool selection diagnosis system comprising:
 a measurement device to output a first swing measurement data value and a second swing measurement data value with a swing behavior when a hitting person swings a hitting tool to hit an object being employed as an input, the first swing measurement data value being dependent on operability of the hitting tool, the second swing measurement data value being dependent on a momentum that the hitting tool has at the time of the hitting; and   a data analysis device to generate diagnosis information for selection of a hitting tool in response to input of the first swing measurement data value and the second swing measurement data value each obtained when the hitting person swings each of a plurality of test hitting tools, the plurality of test hitting tools being three or more test hitting tools, wherein   the data analysis device includes
 a score calculator to, for each of the plurality of test hitting tools, calculate a first score value based on the first swing measurement data value and calculate a second score value based on the second swing measurement data value and to calculate a total score value obtained by integrating the first score value and the second score value based on a weighting parameter designated by the hitting person, the first score value being an indicator value of operability of the hitting tool swung, the second score value being an indicator value of a hit-object speed, and 
 a diagnosis information generator to generate the diagnosis information using the total score value calculated by the score calculator and corresponding to each of the plurality of test hitting tools. 
   
     
     
         2 . The hitting tool selection diagnosis system according to  claim 1 , wherein the diagnosis information includes a function approximation formula of the total score value using a moment of inertia of each of the plurality of test hitting tools and the total score value corresponding to each of the plurality of test hitting tools with the moment of inertia being employed as an input. 
     
     
         3 . The hitting tool selection diagnosis system according to  claim 2 , wherein
 the plurality of test hitting tools are three test hitting tools different in the moment of inertia among a hitting tool group corresponding to an attribute of the hitting person, and   the function approximation formula is a quadratic function.   
     
     
         4 . The hitting tool selection diagnosis system according to  claim 3 , wherein the three test hitting tools include a first test hitting tool, a second test hitting tool, and a third test hitting tool among the hitting tool group, the first test hitting tool having a maximum moment of inertia, the second test hitting tool having a minimum moment of inertia, the third test hitting tool having a moment of inertia larger than the moment of inertia of the second test hitting tool and smaller than the moment of inertia of the first test hitting tool. 
     
     
         5 . The hitting tool selection diagnosis system according to  claim 1 , wherein
 the first swing measurement data value is an initial acceleration of the hitting tool at a time of start of the swing or a required time from the time of start of the swing to the hitting, and   the second swing measurement data value is an impact power or a momentum, the impact power being represented by a product of a weight of the hitting tool, an average acceleration of the hitting tool from the time of start of the swing to the hitting, and a hitting tool speed at the time of the hitting, the momentum being found from an inertia characteristic of the hitting tool and the hitting tool speed at the time of the hitting.   
     
     
         6 . The hitting tool selection diagnosis system according to  claim 1 , wherein
 the first swing measurement data value is a required time from a time of start of the swing to the hitting, and   when the required time when swinging each of the test hitting tools is longer than a first threshold value determined in advance or is shorter than a second threshold value smaller than the first threshold value, the calculation of the total score value using the first swing measurement data value and the second swing measurement data value in the swing of the test hitting tool is prohibited.   
     
     
         7 . The hitting tool selection diagnosis system according to  claim 1 , wherein the score calculator calculates the total score value by integrating, based on the weighting parameter, the first score value and a multiplication value of the second score value and a numerical value representing a restitution force of each of the hitting tools. 
     
     
         8 . The hitting tool selection diagnosis system according to  claim 7 , wherein the score calculator calculates the total score value by integrating, based on the weighting parameter, the first score value and the multiplication value of the second score value and the numerical value representing the restitution force of each of the hitting tools, and then dividing the integrated value by a numerical value representing a price of each of the hitting tools. 
     
     
         9 . The hitting tool selection diagnosis system according to  claim 1 , wherein for at least one of the first swing measurement data value and the second swing measurement data value of each of the hitting tools, the score calculator calculates the first score value or the second score value using a statistical processing value for which a relative relation is quantified among the first swing measurement data values or the second swing measurement data values obtained when swinging the plurality of test hitting tools. 
     
     
         10 . A hitting tool selection diagnosis method, comprising:
 selecting a plurality of test hitting tools based on an input of a user, the plurality of test hitting tools being three or more test hitting tools;   obtaining, using a measurement device to output a first swing measurement data value and a second swing measurement data value with a swing behavior when a hitting person swings a hitting tool to hit an object being employed as an input, the first swing measurement data value and the second swing measurement data value for the swing behavior for each of the plurality of test hitting tools, the first swing measurement data value being dependent on operability of the hitting tool, the second swing measurement data value being dependent on a momentum that the hitting tool has at the time of the hitting;   for each of the plurality of test hitting tools, calculating a first score value based on the first swing measurement data value and calculating a second score value based on the second swing measurement data value, and calculating a total score value obtained by integrating the first score value and the second score value based on a weighting parameter designated by the hitting person, the first score value being an indicator value of operability of the hitting tool swung, the second score value being an indicator value of a hit-object speed; and   generating diagnosis information for selection of a hitting tool using the total score value calculated and corresponding to each of the plurality of test hitting tools.   
     
     
         11 . The hitting tool selection diagnosis method according to  claim 10 , wherein the diagnosis information includes a function approximation formula of the total score value using a moment of inertia of each of the plurality of test hitting tools and the total score value corresponding to each of the plurality of test hitting tools with the moment of inertia being employed as an input. 
     
     
         12 . The hitting tool selection diagnosis method according to  claim 11 , wherein
 the plurality of test hitting tools are three test hitting tools different in the moment of inertia among a hitting tool group corresponding to an attribute of the hitting person, and   the function approximation formula is a quadratic function.   
     
     
         13 . The hitting tool selection diagnosis method according to  claim 12 , wherein the three test hitting tools include a first test hitting tool, a second test hitting tool, and a third test hitting tool among the hitting tool group, the first test hitting tool having a maximum moment of inertia, the second test hitting tool having a minimum moment of inertia, and the third test hitting tool having a moment of inertia larger than the moment of inertia of the second test hitting tool and smaller than the moment of inertia of the first test hitting tool. 
     
     
         14 . The hitting tool selection diagnosis method according to  claim 10 , wherein
 the first swing measurement data value is an initial acceleration of the hitting tool at a time of start of the swing or a required time from the time of start of the swing to the hitting, and   the second swing measurement data value is an impact power or a momentum, the impact power being represented by a product of a weight of the hitting tool, an average acceleration of the hitting tool from the time of start of the swing to the hitting, and a hitting tool speed at the time of the hitting, the momentum being found from an inertia characteristic of the hitting tool and the hitting tool speed at the time of the hitting.   
     
     
         15 . The hitting tool selection diagnosis method according to  claim 10 , wherein
 the first swing measurement data value is a required time from a time of start of the swing to the hitting, and   when the required time when swinging each of the test hitting tools is longer than a first threshold value determined in advance or is shorter than a second threshold value smaller than the first threshold value, the calculation of the total score value using the first swing measurement data value and the second swing measurement data value in the swing of the test hitting tool is prohibited.   
     
     
         16 . The hitting tool selection diagnosis method according to  claim 10 , wherein the calculating the total score value includes calculating the total score value by integrating, based on the weighting parameter, the first score value and a multiplication value of the second score value and a numerical value representing a restitution force of each of the hitting tools. 
     
     
         17 . The hitting tool selection diagnosis method according to  claim 16 , wherein the calculating the total score value includes calculating the total score value by integrating, based on the weighting parameter, the first score value and the multiplication value of the second score value and the numerical value representing the restitution force of each of the hitting tools, and then dividing the integrated value by a numerical value representing a price of each of the hitting tools. 
     
     
         18 . The hitting tool selection diagnosis method according to  claim 10 , wherein for at least one of the first swing measurement data value and the second swing measurement data value of each of the hitting tools, the calculating the total score value includes calculating the first score value or the second score value using a statistical processing value for which a relative relation is quantified among the first swing measurement data values or the second swing measurement data values obtained when swinging the plurality of test hitting tools. 
     
     
         19 . A non-transitory computer-readable recording medium storing a diagnosis program for causing one or more computers to perform a diagnosis method for selecting a hitting tool, wherein
 the diagnosis program causes the one or more computers to:   select a plurality of test hitting tools based on an input of a user, the plurality of test hitting tools being three or more test hitting tools;   obtain, using a measurement device to output a first swing measurement data value and a second swing measurement data value with a swing behavior when a hitting person swings a hitting tool to hit an object being employed as an input, the first swing measurement data value and the second swing measurement data value for the swing behavior for each of the plurality of test hitting tools, the first swing measurement data value being dependent on operability of the hitting tool, the second swing measurement data value being dependent on a momentum that the hitting tool has at the time of the hitting;   for each of the plurality of test hitting tools, calculate a first score value based on the first swing measurement data value and calculate a second score value based on the second swing measurement data value, and calculate a total score value obtained by integrating the first score value and the second score value based on a weighting parameter designated by the hitting person, the first score value being an indicator value of operability of the hitting tool swung, the second score value being an indicator value of a hit-object speed; and   generate diagnosis information for selection of a hitting tool using the total score value calculated and corresponding to each of the plurality of test hitting tools.