KR20110032458A - A method for measuring a velocity vector and deciding a golf simulation parameter by a photoelectric method - Google Patents
A method for measuring a velocity vector and deciding a golf simulation parameter by a photoelectric method Download PDFInfo
- Publication number
- KR20110032458A KR20110032458A KR1020090089949A KR20090089949A KR20110032458A KR 20110032458 A KR20110032458 A KR 20110032458A KR 1020090089949 A KR1020090089949 A KR 1020090089949A KR 20090089949 A KR20090089949 A KR 20090089949A KR 20110032458 A KR20110032458 A KR 20110032458A
- Authority
- KR
- South Korea
- Prior art keywords
- angle
- ball
- led
- photodiode
- signal
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/36—Training appliances or apparatus for special sports for golf
- A63B69/3658—Means associated with the ball for indicating or measuring, e.g. speed, direction
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B24/00—Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
- A63B24/0021—Tracking a path or terminating locations
- A63B2024/0056—Tracking a path or terminating locations for statistical or strategic analysis
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2220/00—Measuring of physical parameters relating to sporting activity
- A63B2220/80—Special sensors, transducers or devices therefor
- A63B2220/805—Optical or opto-electronic sensors
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- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Golf Clubs (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention is to measure the velocity vector and the horizontal angle, vertical angle and rotation of the ball by the photoelectric method, and to provide the variables of the golf simulator using the same. Projecting the ball trajectory in three-dimensional space onto the horizontal and vertical planes to measure the vector direction of the ball photoelectrically, determining the speed using the distance and time difference from the golf tee to the second position and the club on the golf tee. Determining the rotation of the ball by measuring the angle.
Description
An object of the present invention is to provide an input data for simulator variables by measuring the speed, horizontal angle, vertical angle and rotation constituting the decoration of the trajectory of the ball flying in the manufacture of a virtual golf simulator.
When the point light source is placed at the focal point of the cylindrical lens, the screen of the beam irradiated to the ball is constructed by using the characteristic of traveling in a straight line at right angles to the direction in which the light travels. When the ball passes through the horizontal and vertical beam screens, it detects the reflected light and provides information about the horizontal and vertical position. By placing a light emitting element (LED) and a detector switch on the golf tee where the ball starts, no signal is generated while the ball is positioned, and a signal for detecting the light reflected by the beam screen and a switching signal generated when the ball starts. You can get speed by dividing the distance between two signals by the time difference of. The angle of the club and the position of the club where the ball is impacted at the moment of hitting the ball by the arrangement of the light emitting element and the sensor at the position of the golf tee provide information about the rotation.
It is an object of the present invention to provide input data for variables of a golf practice simulator device so as to simulate the trajectory of a ball flying with information obtained from a ball flying in real time.
The method of tracking the trajectory of a flying ball and obtaining the velocity and velocity vector is obtained by dividing the distance between two hit points by the time passing two points around the hitting point (first position). By making a sound with two locations (ㅁ) and connecting a photo sensor and a light source in a straight line at each location to detect light reflected when the ball passed, the vertical and horizontal angles of the ball were obtained. (Korean Utility Model Registration No. 20-0261712) . It can be detected only when the ball enters the heart, and there is a significant error when the actual green is reached because the concept of spatial vector is not introduced. Hass Group has developed a method for detecting various swing motions and positions using electro-optical sensors, but it is too complex and too expensive to be of practical value (US patent: U.S. Pat. No. 4137566). In order to detect the speed and direction of the ball, a linear array of light detectors was attached to the pads of the sensing system, and when the ball was hit, the angle of the club head was measured to measure the horizontal angle of the ball. It was determined by measuring the position of two points by an optical sensor (US Pat. No.5472205), and a method of determining the speed and angle of the ball with a Doppler microwave tachometer was used (US Pat. No. US Pat. 5700204).
The present invention arranges a light sensor on a horizontal plane and a vertical plane on which the ball is projected to obtain a trajectory of a ball flying through a three-dimensional space, and makes a beam screen by configuring an LED and a cylindrical lens. The intensity and position of the light reflected by the ball passing through the beam screen are measured and the measured values are used to determine the speed, horizontal angle, vertical angle and rotation of the ball's three-dimensional projectile equation.
The equations for ball trajectories are interpreted differently when flying in two-dimensional planes and in three-dimensional space. When flying in a two-dimensional plane, it is not necessary to consider the horizontal angle (ψ), but when flying in a three-dimensional space, the vertical angle (θ) and the horizontal angle (ψ) should be considered. The trajectory equation of the ball with initial velocity νο, vertical angle (θ) and horizontal angle (ψ) is
(One)
. Where g is gravity acceleration.
In the vertical plane yz, we can derive
(2)
The maximum horizontal distance can be expressed in coordinates
(3)
to be.
1 is a device diagram for measuring the velocity vector and the horizontal and vertical angle and rotation of the flying ball.
2 is a ray tracing diagram for making a beam screen of irradiation light using a cylindrical lens.
FIG. 3 is a ray tracing diagram of a method different from FIG. 2 for making a beam screen of irradiation light using a convex lens. FIG.
4 is a drawing of the trajectory of the
5 is a golf club hitting angle measuring device diagram. Club
The first transmitter /
The horizontal angle ψ is measured from the
The initial velocity (νο) calculation is determined by substituting the measured horizontal and vertical angles in Eq. (1) and the position of the detected photodiode IC detector. As another method of determining the initial velocity νο, the distance between the
The
The photodiode IC detector of the vertical angle detection circuit 704 is used to obtain the reflected optical signal, amplify the signal in the amplification and noise cancellation circuit 708, and remove the noise mixed with the signal. The position angle and time comparison circuit 710 is used to obtain the information of the vertical angle and the speed of the vertical angle detection circuit 706 and the switching circuit 705 of the
The optical diode IC detector of the horizontal angle detection circuit 706 is used to obtain the reflected optical signal, and the amplification and noise cancellation circuit 708 is used to amplify the signal and to remove noise mixed with the signal. The position and time comparison circuit 709 is used to obtain information about the horizontal angle and the speed with respect to the signals of the horizontal angle detecting circuit 704 and the switching circuit 705 at the position of the
By using the club angle detection circuit 709 to obtain the reflected light signal of the club using the photodiode IC detector, amplify the signal in the amplification and noise canceling circuit 708, and remove the noise mixed with the signal do. Regarding the position measured with respect to the signal measured by the
Signals relating to the vertical angle, horizontal angle, speed, club angle and impact position are encoded in the
There is no corresponding information.
The present invention reproduces the same foreground as the outdoor golf course on the simulator, by measuring the speed, the horizontal angle, the vertical angle, the rotation of the ball by the photoelectric method, by accurately recognizing the information about the golf ball trajectory hit in real time to hit the ball You can decide where you flew. Advantages of the present invention are as follows.
First, the measurement method is simple. It measures the spatial position and time of the ball by recognizing the reflected light when the ball passes through the LED beam screen. And because it consists of a beam screen can reduce the detection error due to the reflected light.
For example, the application of various variables. It provides a simulator manufacturing base considering ball speed, horizontal angle, vertical angle and rotation. It is possible to extract simulator variables for variety of pitches.
Third, the price is low. Many LEDs are not needed because the beam screen is made using cylindrical and convex lenses.
Fourth, it is universal. Produced by the "b" type, because the reference point using the
Fifth, good portability. It is convenient to use in the driving range or at home, and can be manufactured for the portable handheld.
There is no corresponding information.
Brief description of the drawings
1 is a device diagram for measuring the velocity vector and the horizontal and vertical angle and rotation of the carrying ball.
2 is a ray tracing diagram for making a beam screen of irradiation light using a cylindrical lens;
3 is a ray tracing diagram for making a beam screen of irradiation light using a roll lock lens;
Figure 4 is a picture of the trajectory of the ball flying off the golf tee.
Figure 5 is a golf club hitting angle measuring device.
6 is a block diagram of a signal processor
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020090089949A KR20110032458A (en) | 2009-09-23 | 2009-09-23 | A method for measuring a velocity vector and deciding a golf simulation parameter by a photoelectric method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090089949A KR20110032458A (en) | 2009-09-23 | 2009-09-23 | A method for measuring a velocity vector and deciding a golf simulation parameter by a photoelectric method |
Publications (1)
Publication Number | Publication Date |
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KR20110032458A true KR20110032458A (en) | 2011-03-30 |
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Family Applications (1)
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KR1020090089949A KR20110032458A (en) | 2009-09-23 | 2009-09-23 | A method for measuring a velocity vector and deciding a golf simulation parameter by a photoelectric method |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019194442A1 (en) * | 2018-04-02 | 2019-10-10 | 주식회사 골프존 | Putting guide device, virtual golf simulation device using same, and control method therefor |
-
2009
- 2009-09-23 KR KR1020090089949A patent/KR20110032458A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019194442A1 (en) * | 2018-04-02 | 2019-10-10 | 주식회사 골프존 | Putting guide device, virtual golf simulation device using same, and control method therefor |
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