Sensing device for detecting moving golf ball and sensing method for the same

Abstract

The present invention is to provide a sensing device and method for detecting a moving golf ball that fundamentally resolves the cause of errors in sensing results according to conventional technologies in detecting the movement of a golf ball using a light-sensing type golf putting sensing device, thereby further improving the precision of the sensing results.

1 . A sensing device for sensing movement of a golf ball comprising:
 a light emitting assembly that is provided on one side of a path through which the golf ball moves according to the user's putting and including a plurality of light emitters each of which is irradiate light to the other side;   a light receiving assembly that is provided on the other side of the path through which the golf ball moves and including a plurality of light receivers for receiving the light emitted by each of the plurality of light emitters; and   a controller that determines movement characteristic information of the golf ball using results detected by each of the plurality of light receivers as the moving golf ball passes while blocking light from each of the plurality of light emitters to each of the plurality of light receivers, wherein the controller is configured to set a distance from a center of the golf ball to a line of the light as an effective radius at the point in time when a sensing condition preset for the light receiver to detect the golf ball is met, and obtain the movement characteristic information of the golf ball by geometric analysis, taking the point in time when each of the light receivers detects the golf ball as the point in time when an effective circle with the effective radius comes into contact each of the light lines.   
     
     
         2 . The sensing device according to  claim 1 , wherein the light emitting assembly includes:
 a first light emitter and a second light emitter that irradiate light substantially in parallel to sense a speed of the golf ball; and a first cross-light emitter and a second cross-light emitter that are provided between the first light emitter and the second light emitter and irradiate light in an X shape, respectively, and   the light receiving assembly includes:   a first light receiver that receives the light from the first light emitter;   a second light receiver that receives the light from the second light emitter;   a first cross-light receiver that receives the light from the first cross-light emitter; and   a second cross-light receiver that receives the light from the second cross-light emitter.   
     
     
         3 . The sensing device according to  claim 2 , wherein the light emitting assembly is configured to include:
 a first light emitting hole through which the light of the first light emitter passes to form a first light beam;   a second light emitting hole through which the light from the second light emitter passes to form a second light beam;   a first cross-light emitting hole for passing through which the light of the first cross-light emitter passes to form a first cross-light beam; and   a second cross-light emitting hole through which the light of the second cross-light emitter passes to form a second cross-light beam, and   the light receiving assembly is configured to include:   a first light receiving hole for passing the first light beam to the first light receiver;   a second light receiving hole for passing the second light beam to the second light receiver;   a first cross-light receiving hole for passing the first cross-light beam to the first cross-light receiver; and   a second cross-light receiving hole for passing the second cross-light beam to the second cross-light receiver.   
     
     
         4 . The sensing device according to  claim 1 , wherein the controller is configured to preset the effective radius measured in advance according to a size of the golf ball, a height at which the light emitter and the light receiver are installed, and a beam width of the light from the light emitter to the light receiver. 
     
     
         5 . The sensing device according to  claim 4 , wherein the controller is configured to preset the effective radius measured in advance for each golf ball manufacturer or brand, and identify a manufacturer or brand of the golf ball used by the user for putting and apply a preset effective radius of the golf ball corresponding to the identified manufacturer or brand. 
     
     
         6 . The sensing device according to  claim 4 , wherein the controller is configured to distinguishes a new golf ball and a used golf ball, preset each effective radius measured in advance for the new golf ball and the used golf ball, and identify whether a golf ball used by the user for putting is a new or used golf ball and apply a preset effective radius of the identified golf ball. 
     
     
         7 . The sensing device according to  claim 1 , further comprising an effective radius measuring device for measuring the effective radius of a golf ball used by the user for putting, and
 wherein the controller is configured to set a value measured by the effective radius measuring device for the golf ball moving as the user putts as the effective radius so as to obtain the movement characteristic information of the golf ball using the set effective radius.   
     
     
         8 . A sensing method of a sensing device in which a plurality of light emitters are configured to emit light on one side of a path along which a golf ball moves according to a user's putting, and a plurality of light receivers on the other side each receive light, and a controller senses the movement of the golf ball through detection results of each of the plurality of light receivers, the method comprising:
 setting a distance from a center of the golf ball to a line of the light as an effective radius at the point in time when a sensing condition preset for the light receiver to detect the golf ball is met;   receiving the detection results of each of the plurality of light receivers as the golf ball moves according to the user's putting; and   obtaining the movement characteristic information of the golf ball by geometric analysis, taking the point in time when each of the light receivers detects the golf ball as the point in time when an effective circle with the effective radius comes into contact each of the light lines.   
     
     
         9 . The method according to  claim 8 , wherein the setting the distance as the effective radius includes setting the effective radius measured in advance according to a size of the golf ball, a height at which the light emitter and the light receiver are installed, and a beam width of the light from the light emitter to the light receiver. 
     
     
         10 . The method according to  claim 9 , wherein the setting the distance as the effective radius includes setting the effective radius measured in advance for each golf ball manufacturer or brand, and
 wherein the obtaining the movement characteristic information of the golf ball includes identifying a manufacturer or brand of the golf ball used by the user for putting and applying a preset effective radius of the golf ball corresponding to the identified manufacturer or brand.   
     
     
         11 . The method according to  claim 9 , wherein the setting the distance as the effective radius includes distinguishing a new golf ball and a used golf ball, and setting each effective radius measured in advance for the new golf ball and the used golf ball, and
 wherein the obtaining the movement characteristic information of the golf ball includes identifying whether a golf ball used by the user for putting is a new or used golf ball, and applying a preset effective radius of the identified golf ball.   
     
     
         12 . The method according to  claim 8 , wherein the sensing device further includes an effective radius measuring device for measuring the effective radius of a golf ball used by the user for putting, and
 wherein the setting the distance as the effective radius includes setting a value measured by the effective radius measuring device for the golf ball moving as the user putts as the effective radius so as to obtain the movement characteristic information of the golf ball using the set effective radius.