System and method for measuring golf ball striking information

Abstract

A system and method for measuring golf ball striking information includes a floor sensor array for detecting the space velocity and position of a golf ball or detecting the speed of a club head and the trajectory of a circle drawn by the club head; a floor light source emission array for emitting a light source to the floor sensor array from a position corresponding to the floor sensor array; a horizontal sensor array for detecting the entry angle and speed of the club head by left-handed hitting or right-handed hitting; and a horizontal light source emission array for emitting a light source to the horizontal floor sensor array from a position corresponding to the horizontal sensor array.

1 . A system for measuring golf ball striking information, the system comprising:
 a floor sensor array for detecting the space velocity and position of a golf ball or detecting the speed of a club head and the trajectory of a circle drawn by the club head;   a floor light source emission array for emitting a light source to the floor sensor array from a position corresponding to the floor sensor array;   a horizontal sensor array for detecting the entry angle and speed of the club head by left-handed hitting or right-handed hitting; and   a horizontal light source emission array for emitting a light source to the horizontal floor sensor array from a position corresponding to the horizontal sensor array.   
     
     
         2 . The system of  claim 1 , wherein the floor sensor array comprises a first floor sensor, a second floor sensor, a third floor sensor, and a third floor sensor, which receive a light emitted from the floor light source emission array, respectively, detect the shadows of the golf ball and the club head according to their movements, and are provided at regular intervals on the floor. 
     
     
         3 . The system of  claim 2 , wherein the floor light source emission array comprises a first light source for emitting a light toward the first floor sensor, a second light source for emitting a light toward the second floor sensor, a third light source for emitting a light toward the third floor sensor, and a fourth light source for emitting a light toward the fourth floor sensor, which are provided at a predetermined height from the floor. 
     
     
         4 . The system of  claim 3 , wherein the system measures the size of a shadow and the central point of the shadow, formed when the golf ball passes through a third sensing surface formed by the light source emitted from the third light source to the third floor sensor and a fourth sensing surface formed by the light source emitted from the fourth light source to the fourth floor sensor, using the position of the third light source, the position of the fourth light source, the position of the third floor sensor, and the position of the fourth floor sensor to calculate spatial position coordinates of the golf ball, which passes through the third sensing surface and the fourth sensing surface, and calculates a flight vector of the golf ball in a space by connecting points of the calculated spatial position coordinates. 
     
     
         5 . The system of  claim 4 , wherein the system calculates a movement distance from the spatial position coordinates of the golf ball calculated from the third sensing surface and the fourth sensing surface and calculates the space velocity of the golf ball using a time difference between the respectively points. 
     
     
         6 . The system of  claim 3 , wherein the system comprises a first sensing surface formed by the light source emitted from the first light source to the first floor sensor using the position of the first light source and the position of the first floor sensor, a second sensing surface formed by the light source emitted from the second light source to the second floor sensor using the position of the second light source and the position of the second floor sensor, and a third sensing surface formed by the light source emitted from the third light source to the third floor sensor using the position of the third light source and the position of the third floor sensor, calculates three position coordinates of the club head, which meet each other when the club head passes through the first sensing surface, the second sensing surface, and the third sensing surface, calculates an equation of a circle drawn by the trajectory of the club head using the three position coordinates of the club head, and calculates an equation of a tangent line at a point where the golf ball is present by substituting the spatial position coordinates into the equation of the circle. 
     
     
         7 . The system of  claim 6 , wherein the system calculates an entry speed of the club head using the movement distance and movement time of the club head when it passes through the respective sensing surfaces. 
     
     
         8 . The system of  claim 1 , wherein the horizontal sensor array comprises a first horizontal sensor and a second horizontal sensor for measuring the entry angle and entry speed of the club head by left-handed hitting and a third horizontal sensor and a fourth horizontal sensor for measuring the entry angle and entry speed of the club head by right-handed hitting. 
     
     
         9 . The system of  claim 8 , wherein the system calculates an entry vector of the club head by connecting sensor measurement points generated when the club head by left-handed hitting passes through the first horizontal sensor and the second horizontal sensor. 
     
     
         10 . The system of  claim 8 , wherein the system calculates an entry vector of the club head by connecting sensor measurement points generated when the club head by right-handed hitting passes through the third horizontal sensor and the fourth horizontal sensor. 
     
     
         11 . A method for measuring golf ball striking information, implemented by a system which emits a light source from a first light source to a first floor sensor, from a second light source to a second floor sensor, from a third light source to a third floor sensor, and from a fourth light source to a fourth floor sensor and, at the same time, emits a light source from a first horizontal light source to a first horizontal sensor, from a second horizontal light source to a second horizontal sensor, from a third horizontal light source to a third horizontal sensor, and from a fourth horizontal light source to a fourth horizontal sensor, the method comprising the steps of:
 (a) calculating the space velocity and position of a golf ball by means of the third floor sensor and the fourth floor sensor;   (b) calculating the speed of a club head that strikes the golf ball and the trajectory of a circle drawn by the club head by means of the first floor sensor, the second floor sensor, and the third floor sensor; and   (c) calculating the entry angle and speed of the club head by left-handed hitting by means of the first horizontal sensor and the second horizontal sensor or calculating the entry angle and speed of the club head by right-handed hitting by means of the third horizontal sensor and the fourth horizontal sensor.   
     
     
         12 . The method of  claim 11 , wherein step (c) comprises measuring the size of a shadow and the central point of the shadow, formed when the golf ball passes through a third sensing surface formed by the light source emitted from the third light source to the third floor sensor and a fourth sensing surface formed by the light source emitted from the fourth light source to the fourth floor sensor, to calculate spatial position coordinates of the golf ball, which passes through the third sensing surface and the fourth sensing surface, and calculating a flight vector of the golf ball in a space by connecting points of the calculated spatial position coordinates. 
     
     
         13 . The method of  claim 12 , wherein step (a) comprises calculating a movement distance from the spatial position coordinates of the golf ball calculated from the third sensing surface and the fourth sensing surface and calculating the space velocity of the golf ball using a time difference between the respectively points. 
     
     
         14 . The method of  claim 11 , wherein step (b) comprises calculating a first sensing surface formed by the light source emitted from the first light source to the first floor sensor using the position of the first light source and the position of the first floor sensor, a second sensing surface formed by the light source emitted from the second light source to the second floor sensor using the position of the second light source and the position of the second floor sensor, and a third sensing surface formed by the light source emitted from the third light source to the third floor sensor using the position of the third light source and the position of the third floor sensor, calculating three position coordinates of the club head, which meet each other when the club head passes through the first sensing surface, the second sensing surface, and the third sensing surface, calculating an equation of a circle drawn by the trajectory of the club head using the three position coordinates of the club head, and calculating an equation of a tangent line at a point where the golf ball is present by substituting the spatial position coordinates into the equation of the circle. 
     
     
         15 . The method of  claim 14 , further comprising calculating an entry speed of the club head using the movement distance and movement time of the club head when it passes through the respective sensing surfaces. 
     
     
         16 . The method of  claim 11 , wherein step (c) comprises calculating an entry vector of the club head by connecting sensor measurement points generated when the club head by left-handed hitting passes through the first horizontal sensor and the second horizontal sensor. 
     
     
         17 . The method of  claim 11 , wherein step (c) comprises calculating an entry vector of the club head by connecting sensor measurement points generated when the club head by right-handed hitting passes through the third horizontal sensor and the fourth horizontal sensor.