Putting practice apparatus for evaluating striking speed and tempo of putter

Abstract

A putting practice apparatus for evaluating the striking speed and tempo of a putter includes: an emitting unit (100) that emits light and is provided in a first sensor installation part; a light receiving unit (200) that receives the light emitted from the emitting unit (100); a speed detecting unit (300) and a position measuring unit (400) which respectively detect the speed and measure the position of the golf ball (1); a calculation control unit (500) for performing calculations in order to detect the initial position value of the golf ball (1) as measured by the position measuring unit (400) and the movement speed (Vb) and the moving distance (Hb) of the golf ball (1) as measured by the speed detecting unit (300); and a storage unit (600) for storing the measured speed (Vb) and the measured distance (Hb) of the golf ball (1).

1 . A putting practice apparatus, which includes sensor mounting units mounted to face each other and to be spaced apart from each other in parallel with a moving direction of a golf ball ( 1 ), the putting practice apparatus comprising:
 an emitting unit ( 100 ) or a light receiving unit ( 200 ) disposed on a first sensor mounting unit of the sensor mounting unit to emit light; a light receiving unit ( 200 ) or an emitting unit ( 100 ) disposed on a second sensor mounting unit of the sensor mounting unit to receive light emitted from the emitting unit ( 100 ); a speed detecting unit ( 300 ) for detecting the speed of the golf ball ( 1 ) and a position measuring unit ( 400 ) for measuring the position of the golf ball ( 1 ) by checking the moment that the golf ball passes when the light receiving unit ( 200 ) receives the light emitted from the emitting unit ( 100 ) and the golf ball ( 1 ) is putted,   further comprising: a calculation control unit ( 500 ) for calculating to detect an initial position value of the golf ball ( 1 ) measured by the position measuring unit ( 400 ) and a moving speed (Vb) and a moving distance (Hb) of the golf ball ( 1 ) measured by the speed detecting unit ( 300 ); and a storage unit ( 600 ) for storing the measured speed (Vb) and the measured distance (Hb) of the golf ball ( 1 ).   
     
     
         2 . The putting practice apparatus according to  claim 1 , wherein the emitting unit ( 100 ) includes:
 a first emitting unit ( 110 ) for emitting light to detect the initial position of the golf ball ( 1 ); a second emitting unit ( 120 ) for emitting light to detect the speed of the golf ball ( 1 ); and a third emitting unit ( 130 ) for emitting light to detect the strike speed and tempo of a putter ( 2 ) moving behind the golf ball ( 1 ) to strike the golf ball ( 1 ), and   wherein the light receiving unit ( 200 ) includes:   a first light receiving unit ( 210 ) mounted to face the first emitting unit ( 110 ) to receive light emitted from the first emitting unit ( 110 ); a second light receiving unit ( 220 ) mounted to face the second emitting unit ( 120 ) to receive light emitted from the second emitting unit ( 120 ); and a third light receiving unit ( 230 ) mounted to face the third emitting unit ( 130 ) to receive light emitted from the third emitting unit ( 130 ).   
     
     
         3 . The putting practice apparatus according to  claim 2 , wherein the third emitting unit ( 130 ) includes:
 a third-first emitting unit ( 131 ) mounted adjacent to the first emitting unit ( 110 ); and a third-second emitting unit ( 132 ) mounted to be spaced apart from the third-first emitting unit ( 131 ) at a predetermined distance Dc, and   wherein the third light receiving unit ( 230 ) includes:   a third-first light receiving unit ( 231 ) mounted to correspond to the third-first emitting unit ( 131 ); and a third-second light receiving unit ( 232 ) mounted to correspond to the third-second emitting unit ( 132 ).   
     
     
         4 . The putting practice apparatus according to  claim 3 , wherein in a case in which time to detect through the third-first emitting unit ( 131 ) and the third-first light receiving unit ( 231 ) after the putter ( 2 ) starts backswing is t0, and
 in a case in which time to detect through the third-first emitting unit ( 131 ) and the third-first light receiving unit ( 231 ) after the putter ( 2 ) converts backswing into downswing and moves forward is t1,   the tempo (T) is defined as T=t1−t0.   
     
     
         5 . The putting practice apparatus according to  claim 4 , wherein in a case in which time to detect through the third-second emitting unit ( 132 ) and the third-second light receiving unit ( 232 ) after the putter ( 2 ) is converted into downswing and moves forward is t2, and a distance between the third-first emitting unit  131  and the third-second emitting unit ( 132 ) is Dc,
 the speed (Vp) of the putter ( 2 ) is defined as Vp=Dc/(t1−t2). 
 
     
     
         6 . The putting practice apparatus according to  claim 5 , wherein the tempo T and the speed Vp of the putter measured by backswing and downswing of the putter ( 2 ) are stored in the storage unit ( 600 ), the calculation control unit ( 500 ) calculates the moving speed (Vb) and the moving distance (Hb) of the golf ball ( 1 ) after the putter ( 2 ) strikes the golf ball ( 1 ), and then, the calculated values are stored in the storage unit ( 600 ). 
     
     
         7 . The putting practice apparatus according to  claim 6 , wherein after the putter ( 2 ) performs putting of i times (i=1, 2, 3, . . . , n−1, and n), the tempo values Ti measured per putting are stored in the storage unit ( 600 ), the calculation control unit ( 500 ) calculates a standard deviation (Tsd) and an average (Tav) of the tempo Ti measured by the number of times, and the calculated standard deviation (Tsd) and average (Tav) are stored in the storage unit ( 600 ). 
     
     
         8 . The putting practice apparatus according to  claim 7 , wherein in a case in which the standard deviation (Tsd) and the average (Tav) are measured j times (j=1, 2, 3, . . . , m−1, and m), an average value of the measured standard deviation (Tsd) is called a standard deviation reference value (Tsd_b), and an average value of the measured average value (Tav) is called an average reference value (Tav_b),
 the standard deviation reference value Tsd_b is defined as:
   Tsd_ b =[Tsd_1+Tsd_2+Tsd_3+ . . . +Tsd_ m− 1+Tsd_ m]/m ], and 
 
 the average reference value Tav_b is defined as:
   Tav_ b =[(Tav_1_Tav_2+Tav_3+ . . . +Tav_ m −1+Tav_ m )/ m].  
 
 
 
     
     
         9 . The putting practice apparatus according to  claim 8 , wherein in a case in which a current standard deviation value of a tempo Ti_now currently measured by a plurality of putting practices is Tsd_0 and a current average value is Tav_0,
 if the standard deviation value Tsd_0 of the currently measured tempo Ti_now is smaller than the standard deviation reference value Tsd_b (Tsd_0<Tsd_b), it is determined as ‘Improved tempo’,   if the standard deviation value Tsd_0 of the currently measured tempo Ti_now is equal to the standard deviation reference value Tsd_b (Tsd_0=Tsd_b), it is determined as ‘Normal tempo’, and   if the standard deviation value Tsd_0 of the currently measured tempo Ti_now is larger than the standard deviation reference value Tsd_b (Tsd_0>Tsd_b), it is determined as ‘Bad tempo’.   
     
     
         10 . The putting practice apparatus according to  claim 9 , wherein in the state in which it is determined as ‘Improved tempo’ (Tsd_0<Tsd_b), in a case in which a value that an absolute value of a difference value between the average value Tav_0 of the currently measured tempo Ti_now and the average reference value Tav_b is divided by the average reference value Tav_b is less than 0.1 (|Tav_0−Tav_b|/Tav_b<=0.1), it is determined as ‘Very improved tempo’. 
     
     
         11 . The putting practice apparatus according to  claim 6 , wherein in a case in which a speed value of the putter ( 2 ) measured by the number of putting times after the putter ( 2 ) performs putting of i times (i=1, 2, 3, . . . , n−1, and n) is called Vpi, and the speed of the golf ball  1  moving after being struck by the putter ( 2 ) is called Vbi,
 if the speed values Vpi having the same speed among the Vpi (herein, i=1, 2, 3, . . . , n−1, and n) are divided by speed, 
 each speed is Vp q (here, q=1, 2, 3, . . . , k−1, k, k+1, . . . , u−1, and u), and if the speed of the putter  2  is Vp_k, the fastest speed of the golf ball  1  is called Vb_k_max, and 
 wherein in a case in which the speed of the putter ( 2 ) is Vp q, the fastest speed of the golf ball ( 1 ) moving by the strike of the putter ( 2 ) is defined as Vb q-max, and the Vp-q and the Vb q-max (here, q=1, 2, 3, . . . , k−1, k, k+1, . . . , u−1, and u) are stored in the storage unit ( 600 ). 
 
     
     
         12 . The putting practice apparatus according to  claim 11 , wherein in a case in which the current speed of the putter ( 2 ) measured by the current putter practice is called Vpc and the moving speed of the golf ball ( 1 ) struck by the putter is called Vbc,
 the same speed as the Vpc is found from the Vp q (here, q=1, 2, 3, . . . , k−1, k, k+1, . . . , u−1, and u),   when the speed constant is Vpc=Vp_k, a speed constant Vconst=(Vbc)/(Vb_k_max), and when Vconst≥1, it is determined as ‘Very accurate strike position’,   when the speed constant is 0.95≤Vconst≤1, it is determined as ‘Improved strike position’,   when the speed constant is 0.9≤Vconst≤0.95, it is determined as ‘Normal strike position’,   when the speed constant is 0.85<Vconst≤0.9, it is determined as ‘Effor-required strike position’,   when the speed constant is 0.8<Vconst≤0.85, it is determined as ‘Bad strike position’, and   when the speed constant is Vconst≤0.8, it is determined as ‘Strike position to be corrected’.