KR20050014928A - 3D golf swing analysis system and the method thereof - Google Patents

Abstract

PURPOSE: A 3D golf swing analysis system and method are provided to provide a user with information about speed of golf ball, an anticipated carry distance, shock of a club head, swing accuracy of a club head, and deflection of a golf ball, at a low cost. CONSTITUTION: The 3D golf swing analysis system and method include a front horizontal sensor(11), a front vertical sensor(12), a rear horizontal sensor(13), a rear vertical sensor(14), a signal separating portion(20), a filtering portion(30), a controller(40), and a displaying portion(50). The filtering portion filters front horizontal/vertical location signals and rear horizontal/vertical location signals of a ball inputted from the signal separating portion(20), and outputs front horizontal/vertical location data and rear horizontal/vertical location data. The controller(40) recognizes the location coordinates of a ball with data inputted from the filtering portion and calculates speed of a golf ball, an anticipated carry distance, shock of a club head, swing accuracy of a club head, and deflection of a golf ball.

Description

3D golf swing analysis system and the method

The present invention relates to a 3D golf swing analysis system and method.

More specifically, it is installed for indoor and outdoor golf driving ranges and individual exercises to give the golf swing exerciser the speed of the ball he swings, the estimated distance, the amount of impact of the club head, the accuracy of the club head swing angle, and the left and right side of the ball. And a low-cost 3D golf swing analysis system and method for providing the practitioner with relevant information.

In general, golf played today in Scotland, where soldiers who conquered Pila Paganica Scottish Castle during the Roman Caesars (BC100-44) struck a ball of feathers with a bent end bent while resting in the camp. Unlike the theory of golf, there is no clear origin, but the history of golf in the West has a long tradition, and it is clear that it is indispensable as a gentle sport in modern sports.

As Korea's first golf course was started by the British in the Customs Zone of Wonsan in 1900, and Chosun Golf Sosa, published in Japan in November 1940, golf history in Korea is relatively shorter than in the West. Although he has a history of golf, his love and passion for golf is as good as in the West.

However, the golf environment in South Korea naturally goes to the outdoor or indoor golf practice field to practice due to the lack of a practice space that is insufficiently short compared to the exploded golf population. In this environment, in order to improve the performance of the domestic golfers, golf practice facilities and equipment, such as golf exercisers for general and slope adjustment, golf practice net, golf simulation, golf swing guide, golf swing posture corrector, tee shot exerciser, weight transfer reader, He is practicing golf using a golf ball feeder and a putting practice mat.

Therefore, there has been a demand for the development of a system that can analyze the golf swing status of a low-cost and practical practitioner for outdoor or indoor golf driving ranges and individuals.

Therefore, the present invention has been devised in response to the demand of the system development as described above, the object of the present invention is installed for the indoor and outdoor golf driving range and individual practice, the speed of the ball swing, the expected distance, The present invention provides a low-cost 3D golf swing analysis system and method for providing the exerciser with relevant information such as the amount of impact of the club head, the accuracy of the club head swing angle, and the left and right deflection information (hook, slice).

One embodiment of the present invention for achieving the above object is installed in the front horizontal direction, the front horizontal sensor unit for outputting the front horizontal position signal of the ball by detecting the movement in the front horizontal direction of the ball, and the front vertical It is installed in the direction and detects the movement in the front vertical direction of the ball and outputs the front vertical position signal of the ball, and is installed in the rear horizontal direction. A rear horizontal sensor unit for outputting a horizontal position signal, a rear vertical sensor unit installed in the rear vertical direction and detecting a movement in the rear vertical direction of the ball to output a rear vertical position signal of the ball, and the front horizontal / vertical sensor For receiving and outputting the front horizontal / vertical position signal and the rear horizontal / vertical position signal of the ball output from the unit and the rear horizontal / vertical sensor unit step by step. A call separator and a filter unit for outputting front horizontal / vertical position data and rear horizontal / vertical data by filtering the front horizontal / vertical position signal and the rear horizontal / vertical position signal of the ball input through the signal splitter; Recognizes the position coordinate of the ball in space by receiving the front horizontal / vertical position data and the rear horizontal / vertical data filtered by the filter unit, and uses the recognized position coordinates of the ball speed, estimated distance, and club head. Control unit for calculating and outputting the impact amount, accuracy of club head swing angle, left and right tilting angle (hook, slice) of the ball, and a display unit and an output unit for displaying the calculated value on the screen or FND under the control of the controller Characterized in that configured.

The signal separator is a multiplexer for selectively receiving a signal output from the front horizontal / vertical sensor unit and a signal output from the rear horizontal / vertical sensor unit under the control of the controller and outputting the signal to the filter unit.

The controller may be configured to check a time point at which the front vertical position data and the rear vertical position data sequentially input by the filter unit are input, and then determine the time due to the detection time difference between the front vertical position data and the rear vertical position data. calculate t).

The control unit may calculate an angle θ according to the parabolic motion of the ball by using the phase difference between the front vertical position data and the rear vertical position data and the distance between the front and rear vertical (or horizontal) sensor units. The parabolic moving distance s of the ball is calculated using an angle and a distance and a phase difference between the preset front and rear vertical sensor units.

The speed (v) of the ball is calculated using the time and the moving distance, and the estimated arrival distance of the ball is calculated and provided by the following equation using the angle (θ).

[Equation 1]

Expected distance = v ² sin2θ / g, where v is the velocity of the ball, θ is the angle of the parabola, and g is the acceleration of gravity

The swing angle of the club head is recognized and provided using the angle θ.

The control unit may calculate the left and right tilting angles of the batting ball using the phase difference between the front horizontal position data and the rear horizontal position data and the distance between the front and rear horizontal sensor units by the following equation, so that the ball is moved from the center axis to the left and right directions. It is characterized in that it provides a recognition of how much distance has been deflected.

[Equation 2]

tan Φ = c / a, where Φ is an angle according to the left and right deflection degree of the ball, a is a distance between horizontal front and rear sensor parts, and c is a phase difference between horizontal front and rear position data.

In addition, the impact amount of the club head is applied to the ball by the club head, it is characterized by providing the calculated amount of impact by the club head by the following formula.

[Equation 3]

I = ft = mv, where I is the impact of the ball, f is the force exerted on the ball, t is the time, m is the mass of the ball, and v is the speed of the ball.

In addition, another embodiment of the present invention, the front horizontal sensor unit for detecting the movement in the front horizontal direction of the front horizontal direction and outputs the front horizontal position signal of the ball, and is installed in the front vertical direction The front vertical sensor unit detects the movement in the front vertical direction and outputs the front vertical position signal of the ball, and is installed in the rear horizontal direction to output the rear horizontal position signal of the ball by detecting the movement in the rear horizontal direction of the ball. A rear horizontal sensor unit, a rear vertical sensor unit installed in the rear vertical direction and detecting a movement in the rear vertical direction of the ball and outputting a rear vertical position signal of the ball, the front horizontal / vertical sensor unit and the rear horizontal / vertical A signal separation unit for receiving the horizontal and vertical position signals and the horizontal and vertical position signals of the ball output from the sensor unit step by step and outputting the signal; A filter unit for filtering the front horizontal / vertical position signal and the rear horizontal / vertical position signal of the ball input through the unit and outputting the front horizontal / vertical position data and the rear horizontal / vertical data; and the front horizontal / vertical filtered by the filter unit. Recognition of ball position coordinates in space by receiving vertical position data and rear horizontal / vertical data, and accuracy of ball speed, estimated distance, club head impact, and club head swing angle using recognized ball position coordinates And a control unit for calculating and outputting left and right tilting angles (hooks and slices) of the hitting ball, and a display unit and an output unit for displaying the calculated value on a screen or FND under the control of the control unit. In the swing analysis method,

The controller checks the input time points of the front horizontal (or vertical) position data and the rear horizontal (or vertical) position data sequentially filtered by the filter unit, and thus the front horizontal (or vertical) position data and the rear horizontal. It is characterized in that the calculation of the detection time difference between the (or vertical) position data and the speed of the ball are calculated using the distance between the detection time difference and a preset front / rear horizontal (or vertical) sensor unit.

The control unit may further determine the angle according to the parabolic motion of the ball by using the phase difference between the front vertical (or horizontal) position data and the rear vertical (or horizontal) position data and the distance between the front and rear vertical (or horizontal) sensor units. θ), and using the angle θ and the speed v of the ball, the distance of the ball is calculated and provided by the following equation.

[Equation 1]

Reach = v ² sin2θ / g, where v is the velocity of the ball, θ is the angle of the parabola, g is the acceleration of gravity

Recognizing and providing a swing angle of the club head using the angle (θ).

The control unit may calculate the left and right tilting angles of the batting ball using the phase difference between the front horizontal position data and the rear horizontal position data and the distance between the front and rear horizontal sensor units by the following equation, so that the ball is moved from the center axis to the left and right directions. Characterized in that it is provided with a deflection.

[Equation 2]

tan Φ = c / a, where Φ is an angle according to the left and right deflection degree of the ball, a is a distance between horizontal front and rear sensor parts, and c is a phase difference between horizontal front and rear position data.

In addition, the impact amount of the club head is applied to the ball by the club head, it is characterized by providing the calculated amount of impact by the club head by the following formula.

[Equation 3]

I = ft = mv, where I is the impact of the ball, f is the force exerted on the ball, t is the time, m is the mass of the ball, and v is the speed of the ball.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the sensor stage 10, the signal separation unit 20, the filter unit 30, the control unit 40, the display unit 50, the data output unit 60, and the operation unit ( 70).

The sensor stage 10 is installed in the front horizontal direction and the front horizontal sensor unit 11 for detecting the movement in the front horizontal direction of the ball and outputs the front horizontal position signal of the ball, and is installed in the front vertical direction The front vertical sensor unit 12 which detects the movement in the front vertical direction and outputs the front vertical position signal of the ball, and the rear horizontal position signal of the ball which is installed in the rear horizontal direction and detects the movement in the rear horizontal direction of the ball. It is composed of a rear horizontal sensor unit 13 for outputting, and a rear vertical sensor unit 14 installed in the rear vertical direction and detecting the movement in the rear vertical direction of the ball and outputting the rear vertical position signal of the ball.

At this time, each of the sensor unit 11-14 is composed of a light emitting unit and a light receiving unit by about 50 light sensors, the position and quantity of the light sensor in the sensor unit 11-14 is to determine the coordinate position in the space of the ball It is determined within the range to enable it.

In particular, the sensor unit frame is installed by arranging the sensors of the sensor unit 11-14 by setting a sufficient area range for passing the ball (for example, about 2m ahead of the batter swing radius of the turn at bat).

In addition, the frame can be configured as a three-dimensional space that can determine the position according to the movement of the ball by arranging the optical sensors to have a space of about 2cm in the vertical and horizontal directions as shown in Figure 2 of the accompanying drawings.

When the ball passes through the three-dimensional space, the positional coordinate data of the ball may be obtained through the sensor unit 11-14. On the other hand, the frame should be made of a material that can withstand the impact strength of the ball.

Here, the optical sensor includes a laser diode, an infrared light emitting diode, a photodiode, a port transistor, and the like.

The signal separation unit 20 is a two-channel multiplexer, and the front horizontal / vertical position signal of the ball output from the front horizontal / vertical sensor units 11 and 12 and the rear horizontal / vertical sensor units 13 and 14. And a rear horizontal / vertical position signal is gradually input to the filter unit 30.

The filter unit 30 filters horizontal and vertical signals input through the signal separation unit 20 to output front horizontal / vertical position data and rear horizontal / vertical position data.

The control unit 40 receives the front horizontal / vertical position data and the rear horizontal / vertical data filtered by the filter unit 30, and the ball speed, the estimated distance, the club head impact amount, the accuracy of the club head swing angle, the hitting The left and right tilting angles (hooks and slices) of the display unit, and outputs them, while the screen state and the power supply of the 3D analysis system 100 are output on the screen of the display unit 50 in response to a key signal of the operation unit. Control output indicators.

As shown in FIG. 3, the display unit 50 displays the swing analysis information of the exerciser, which is the calculated value, on the screen or the FND according to the control of the controller 40.

The data output unit 60 records the swing analysis information of the exerciser, which is the calculated value, on a predetermined recording medium under the control of the controller 40. Here, the data output unit 60 may be replaced by a general printer, the printer may also be connected to each of the 3D golf swing analysis system, if a plurality of 3D golf swing analysis system is provided, such as a driving range The printer is installed in a predetermined place, and the golf swing analysis information can be output by connecting through a network.

The operation unit 70 outputs a key signal for controlling the entire system according to the user's operation.

Referring to the operation of the 3D golf swing analysis system configured as described above are as follows.

First, the golf practitioner swings at the indoor or outdoor golf driving range or the individually installed driving range in which the 3D golf swing analysis system 100 to which the present invention is applied as shown in FIG. 3 is attached to the sensor stage 10. In case of passing, the front horizontal / vertical sensor parts 11 and 12 and the rear horizontal / vertical sensor parts 13 and 14 of the sensor stage 10 are the front horizontal / vertical position signals of the ball at the moment the ball passes. The rear horizontal / vertical position signal is recognized and output to the two-channel multiplexer which is the signal separation unit 20.

That is, the multiplexer first separates the front horizontal / vertical position signal into respective channels under the control of the controller 40 and outputs the filtered horizontal horizontal / vertical position data to the filter unit 30 formed of the latch circuit. It is input to the control unit 40.

The rear horizontal / vertical position signal is separately input to each channel and output to the filter unit 30 so that the filtered rear horizontal / vertical position data is input to the control unit 40.

Then, the controller 40 checks the input time points of the sequentially input front vertical position data and the rear vertical position data, and calculates a time t due to the detection time difference between the front vertical position data and the rear vertical position data. The angle? According to the parabolic motion of the ball is calculated using the phase difference between the front vertical position data and the rear vertical position data and the distance between the front and rear vertical (or horizontal) sensor units. The parabolic moving distance s of the ball is calculated using the calculated angle and the distance and phase difference between the front and rear vertical sensor units, and the speed v of the ball is calculated using the time and the moving distance. At this time, the mass of the ball is a value already known from the outside to calculate the amount of impact that is the magnitude of the impact on the ball at the moment the club head is impacted with the ball speed.

In addition, the controller 40 may determine a distance (b) between the front vertical (or horizontal) position data and the rear vertical (or horizontal) position data, and the distance (b) between the front and rear vertical (or horizontal) sensor units 11-14. Using the a) to calculate the angle (θ) according to the parabolic motion of the ball, using the angle (θ) and the speed of the ball (v) to calculate the estimated distance of the ball by the following equation Provided through 50 (see FIG. 3 attached).

(Equation 1)

Reach = v ² sin2θ / g, where v is the velocity of the ball, θ is the angle of the parabola, g is the acceleration of gravity

The angle θ may be calculated using tan θ = b / a, where a is a distance between the sensor units 11-14 and b is a phase difference between the front vertical position data and the rear vertical position data.

The swing angle of the club head is recognized using the angle θ and provided through the display unit 50.

At this time, the theoretical distance is the largest when the θ is 45 °, so the swing angle by the club head should be made to be the same as θ 〓 45 °. Therefore, the swing angle of the club head can be accurately inferred from the θ value.

The controller 40 calculates the left and right tilting angles of the batting ball by using the phase difference between the front horizontal position data and the rear horizontal position data and the distance between the front and rear horizontal sensor units 11-14 as follows. The display unit 50 recognizes which direction is deflected from the central axis in the left and right directions.

(Equation 2)

tan Φ = c / a, where Φ is an angle according to the left and right deflection degree of the ball, a is a distance between horizontal front and rear sensor parts, and c is a phase difference between horizontal front and rear position data.

Therefore, it is possible to know whether the ball is hooked or sliced by using the information on the reach distance and the information on the left and right tilting angles of the batting, and when the hook or slice is formed, the distance can be calculated.

On the other hand, the golf practitioner using the control unit 70, the desired information from the information such as the ball speed, estimated distance, the amount of impact of the club head, the accuracy of the club head swing angle, the left and right side of the ball (hook, slice) The key signal may be input to the controller 40 so that the display can be selectively or entirely viewed through the display unit 50. In this case, the information output through the display unit 50 may have a graphic form or may be output only as numeric information.

At this time, the impact amount of the club head is applied to the ball by the club head can be calculated by the following formula to calculate the impact amount of the ball by the club head.

(Equation 3)

I = ft = mv, where I is the impact of the ball, f is the force exerted on the ball, t is the time, m is the mass of the ball, and v is the speed of the ball.

Of course, the golf practitioner may input a key signal for controlling the entire system such as power on / off, system reset, printer output by using the operation unit 70 and the power on / off switch 71.

Accordingly, the present invention is installed in the indoor and outdoor golf driving ranges and individual places to the golf swing exerciser swings his own speed, estimated distance, the amount of impact of the club head, the accuracy of the club head swing angle, left and right pull information (hook) To provide a low-cost 3D golf swing analysis system for providing exercisers with relevant information, such as slices, slices, and the like.

The present invention is not limited only to the above embodiments, and it is apparent that many modifications are possible by those skilled in the art within the technical spirit of the present invention.

1 is a view for explaining the configuration of a 3D golf swing analysis system according to the present invention,

2 is a conceptual diagram of the installation of the present inventors 3D golf swing analysis system,

3 is a screen diagram showing golf swing analysis information provided to an exerciser.

*** Explanation of main parts of drawing ***

10: sensor

11: front horizontal sensor unit 12: front vertical sensor unit

13: rear horizontal sensor part 14: rear vertical sensor part

20: signal separation unit 30: filter unit

40: control unit 50: display unit

60: data recording unit 70: operation unit

Claims (15)

A front horizontal sensor unit installed in the front horizontal direction and detecting a movement in the front horizontal direction of the ball and outputting a front horizontal position signal of the ball; A front vertical sensor unit installed in the front vertical direction to detect a movement in the front vertical direction of the ball and output a front vertical position signal of the ball; A rear horizontal sensor unit installed in the rear horizontal direction and detecting a movement in the rear horizontal direction of the ball and outputting a rear horizontal position signal of the ball; A rear vertical sensor unit installed in the rear vertical direction and detecting a movement in the rear vertical direction of the ball and outputting a rear vertical position signal of the ball; A signal separator for gradually receiving the front horizontal / vertical position signal and the rear horizontal / vertical position signal of the ball output from the front horizontal / vertical sensor unit and the rear horizontal / vertical sensor unit; A filter unit for outputting front horizontal / vertical position data and rear horizontal / vertical data by filtering the front horizontal / vertical position signal and the rear horizontal / vertical position signal of the ball input through the signal separation unit; Recognizes the position coordinates of the ball in space by receiving the front horizontal / vertical position data and the rear horizontal / vertical data filtered by the filter unit, and uses the recognized position coordinates of the ball speed, estimated distance, and club head. A control unit that calculates and outputs the amount of impact, the accuracy of the club head swing angle, the left and right tilting angles (hooks, slices) of the ball, and A display unit for displaying the calculated value on a screen according to the control of the controller; 3D golf swing analysis system, characterized in that configured to include. The method of claim 1, wherein the signal separation unit, 3D golf swing analysis system comprising a multiplexer for selectively receiving a signal output from the front horizontal / vertical sensor unit and a signal output from the rear horizontal / vertical sensor unit in response to the control of the controller and outputs the signal to the filter unit . The method of claim 1, wherein the control unit, Calculating a time (t) due to a detection time difference between the front vertical position data and the rear vertical position data by checking input points of the forward vertical position data and the rear vertical position data sequentially filtered by the filter unit; Featured 3D golf swing analysis system. The method of claim 3, wherein the control unit, Calculating the angle θ according to the parabolic motion of the ball by using the phase difference between the front vertical (or horizontal) position data and the rear vertical (or horizontal) position data and the distance between the front and rear vertical (or horizontal) sensor units, 3D golf swing analysis system, characterized in that by using the angle (θ) and the speed of the ball (v) to calculate the estimated distance of the ball by the following formula. [Equation 1] Expected distance = v ² sin2θ / g, where v is the velocity of the ball, θ is the angle of the parabola, and g is the acceleration of gravity The method of claim 4, wherein the control unit, 3D golf swing analysis system, characterized in that for providing the swing angle of the club head using the angle (θ). The method of claim 3, wherein the control unit, Based on the phase difference between the front horizontal position data and the rear horizontal position data and the distance between the front and rear horizontal sensor units, the left and right tilting angles of the batting are calculated by the following equation to recognize and provide which direction the ball is deflected from the central axis in the left and right directions. 3D golf swing analysis system, characterized in that. [Equation 2] tan Φ = c / a, where Φ is the left and right deflection degree of the ball, a is the distance between the horizontal front and rear sensor parts, and c is the phase difference between the horizontal front and rear position data. The 3D golf swing analysis system of claim 1, wherein the controller calculates and provides an impact amount of the club head applied to the ball by the club head by the following equation. [Equation 3] I = ft = mv, where I is the impact of the ball, f is the force exerted on the ball, t is the time, m is the mass of the ball, and v is the speed of the ball. The method of claim 1, And a data output unit configured to record the calculated value on a predetermined recording medium under the control of the controller. The method of claim 8, wherein the data output unit, 3D golf swing analysis system, characterized in that the printer, the recording medium is paper. The method of claim 1, Further comprising a control unit for outputting a key signal for controlling the entire system according to the user's operation, And the control unit controls a state of outputting on the screen or FND of the display unit in response to a key signal of the operation unit. It is installed in the front horizontal direction and detects the movement in the front horizontal direction of the ball and outputs the front horizontal position signal of the ball, and is installed in the front vertical direction to detect the movement in the front vertical direction of the ball. A front vertical sensor unit that outputs a front vertical position signal of the rear horizontal direction, a rear horizontal sensor unit which is installed in the rear horizontal direction and outputs a rear horizontal position signal of the ball by detecting a movement in the rear horizontal direction of the ball, and in a rear vertical direction A rear vertical sensor unit installed to detect a movement in the rear vertical direction of the ball and output a rear vertical position signal of the ball, and a front horizontal / vertical ball output from the front horizontal / vertical sensor unit and the rear horizontal / vertical sensor unit A signal separator for receiving the vertical position signal and the rear horizontal / vertical position signal in stages and outputting them; and the front of the ball input through the signal separator. A filter unit for filtering the horizontal / vertical position signal and the rear horizontal / vertical position signal to output the front horizontal / vertical position data and the rear horizontal / vertical data; and the front horizontal / vertical position data and the rear horizontal / vertically filtered by the filter unit. Recognize the position coordinate of the ball in space by receiving the vertical data, and use the recognized position coordinate of the ball, the speed of the ball, the estimated distance, the impact of the club head, the accuracy of the club head swing angle, and the left and right tilt of the ball ( In the swing analysis method of the 3D golf swing analysis system comprising a control unit for calculating and outputting a hook, a slice), and a display unit and an output unit for displaying the calculated value on a screen or FND under the control of the control unit. The controller checks the input time points of the front horizontal (or vertical) position data and the rear horizontal (or vertical) position data sequentially filtered by the filter unit, and thus the front horizontal (or vertical) position data and the rear horizontal. 3D golf swing analysis, characterized in that the calculation of the detection time difference between the (or vertical) position data and the speed of the ball using the distance between the detection time difference and a predetermined front / rear horizontal (or vertical) sensor unit. Way. The method of claim 11, wherein the control unit, The angle θ according to the parabolic motion of the ball is calculated using the phase difference between the front vertical position data and the rear vertical position data and the distance between the front and rear vertical (or horizontal) sensor units, and the angle θ and the 3D golf swing analysis method, characterized in that the estimated distance of the ball using the speed (v) of the ball is calculated and provided by the following equation. [Equation 1] Expected distance = v ² sin2θ / g, where v is the velocity of the ball, θ is the angle of the parabola, and g is the acceleration of gravity The method of claim 12, wherein the control unit, 3D golf swing analysis method, characterized in that for providing the swing angle of the club head using the angle (θ). The method of claim 11, wherein the control unit, Based on the phase difference between the front horizontal position data and the rear horizontal position data and the distance between the front and rear horizontal sensor units, the left and right tilting angles of the batting are calculated by the following equation to recognize and provide which direction the ball is deflected from the central axis in the left and right directions. 3D golf swing analysis method characterized in that. [Equation 2] tan Φ = c / a, where Φ is an angle according to the left and right deflection degree of the ball, a is a distance between horizontal front and rear sensor parts, and c is a phase difference between horizontal front and rear position data. The 3D golf swing analysis method of claim 11, wherein the controller calculates and provides an impact amount of the club head applied to the ball by the club head by the following equation. [Equation 3] I = ft = mv, where I is the impact of the ball, f is the force exerted on the ball, t is the time, m is the mass of the ball, and v is the speed of the ball.