JPH07121287B2 - Golf practice equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention swings a golf club to photograph a large number of balls and clubs in the vicinity of the impact within one frame, and the television is shot at the moment when the frame is hit. The present invention relates to a golf practice device which is displayed as a still image on a monitor.

[Conventional technology]

Conventionally, as a device of this type, a device using a high-speed video capable of sending 500 frames or more per second or a device using a stroboscopic photograph is known.

[Problems to be solved]

In the conventional high-speed video, a large number of still images cannot be recorded in one frame, and when it is desired to know the state near the impact, frame advance and search must be repeated, which is a troublesome operation. Also, high speed video not only required special lighting, but also recorded many unwanted images. In addition, the stroboscopic image could not be viewed in real time.

Therefore, this invention eliminates unnecessary images by copying a large number of moments required for a golfer's swing within one frame, and as a result, does not require frame advance or search unlike the conventional high-speed video, and does not require special lighting. It is an object of the present invention to provide a golf practice device which is unnecessary and allows only a required image to be viewed in real time, and is compact.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention is a golf practice device that displays the moment of impact of a golf swing on a TV monitor by a combination of a light emitting unit, a video camera, and a frame memory. Installed, connect the trigger control unit that receives the detection signal from the trigger when the golf club passes to the trigger, connect the retarder that receives the signal from this trigger control unit to the trigger control unit, and connect the retarder to this retarder Connect the flash control unit that receives the signal of
An external signal is output to a strobe power supply unit and a frame memory by receiving a light emission signal from the strobe control unit and giving the light emission unit a light emission output for multiple flashes for one frame of a video camera. Connect the retarder, connect the video camera and the retarder with the frame memory that receives the video signal from the video camera and the external signal from the retarder and sends the video for one frame to the TV monitor, and detect the head speed in the golf club. For this reason, a sensor that does not operate at a certain speed or less is installed at a certain interval just before hitting the ball, and the retarder that delays sending a signal to the next for a certain time is until the golf club that passed the trigger hits the ball. Adjust for differences in individual time or club count 1
The ball and club are configured so that multiple shots can be taken on the screen of the frame, and the retarder can take multiple shots of the ball and club on the screen of one frame by matching the timing of strobe emission and image capture. It is configured in.

[Action]

When the golfer swings the golf club, the trigger senses the club, the light emitting part flashes, and the video camera captures the ball and club near the impact as many instantaneous poses within one frame, and this multiple image is displayed on the TV monitor. Be done. Also, the sensor measures the head speed.

〔Example〕

In FIGS. 1 and 2, two video cameras 2, 2 ′, a trigger 3 and a light emitting unit 4 are installed toward the golf player 1. The video cameras 2 and 2'may be commercially available video signals at a speed of 30 frames per second, and a special high speed video camera is not required. The trigger 3 operates when swinging down the golf club, and the trigger 3 sends a detection signal to the trigger controller 6. The retarder 3 receives the signal from the trigger controller 6 and sends the signal from the retarder 7 to the strobe controller 8. The strobe control unit 8 that receives the signal from the retarder 7 sends a light emission signal to the strobe power supply unit 9, and the strobe power supply unit 9 gives a light emission output to the light emission unit 4. The light emitting unit 4 to which the light emission output is given is the video camera 2
Flashes multiple times in one frame to capture multiple momentary poses. For example, as a video camera 2, 2 ', 3 per second
Sending 0 frames Normally, when using a commercially available one and operating it for 1 frame, the light emitting part 4 flashes 10 times in 1/30 seconds, and 10 frames are recorded in 1 frame of the video camera 2, 2 '. A momentary pose is captured and displayed as a multiple image on the monitor 5 in real time. For the golf player 1, video cameras 2 and 2'are set from the front and from above, and the respective video signals are sent to the frame memory 10. The signal output from the strobe control unit 8 outputs a light emission output to the strobe power supply unit 9 and also to the retarder 11, and the retarder 11 outputs an external signal to the frame memory 10. Frame memory 10
When the signal from the strobe control unit 8 is received via the retarder 11, the video signals from the video cameras 2 and 2'output the video output to the TV monitor 5 which is frozen in the frame memory 10. The TV monitor 5 has one of the video cameras 2, 2 '.
A plurality of instantaneous bose captured by a plurality of flashes of the light emitting unit 4 in the frame are displayed simultaneously, that is, as a multiple image. Further, the frame memory 10 outputs the image to the TV monitor 5 and also outputs the image to the video tape recorder (VTR) 12, and the VTR 12 can record the image. In addition, the video camera 2, without going through the frame memory 10,
It is also possible to display either one of the images 2 ′ directly on the TV monitor 5. For example, the entire form taken by the video camera 2'is displayed on the television monitor 5.

Furthermore, the image displayed on the TV monitor 5 is displayed as the coordinates of the ball position and the club position using a digitizer (not shown) using a microcomputer (not shown), and the launch speed of the ball is analyzed by analysis software. , Back spin, side spin, vertical launch angle, left and right launch angle, head speed, head entry method (inside out, outside in, etc.), hitting point, etc. are quantified, and ballistic calculation is performed using the initial conditions of the ball. It is also possible to calculate the flight distance and the like and display it on the screen of the TV monitor 5.

The retarders 7 and 11 described above delay sending a signal to the next for a certain period of time, and the retarder 7 takes a long time to pass the trigger 3 to the moment of impact of the golf swing depending on the batter and the club count. There is a difference in speed, and it is for adjusting the timing for multiple shooting of the ball and the club in one screen. Further, the retarder 11 is for taking multiple shots of the ball and the club in the screen of one frame by matching the timings of strobe light emission and image capturing.

The above-mentioned light emitting unit 4 is designed to flash 10 times at intervals of two thousandths of a second. When a microcomputer is used, it is possible to save the calculation result as data in an external storage device such as a floppy disk.

FIGS. 1 and 2 show an example in which two video cameras 2 and 2'are used, but it is also possible to install one or more video cameras to obtain images with different photographing angles. For example, the state of the club or the ball, the posture of the golf player 1, and the like can be more clearly understood by shooting from the front, diagonally, and from above.

Reference numeral 13 in FIG. 1 denotes a mat, and the mat 13 is provided with a sensor 14 for measuring the head speed. This sensor 14 measures the time it takes for the club to pass by two transmissive optical sensors that are set aside just before the ball is hit and hit the ball, and the time is calculated by the microcomputer built into the case 15. It is displayed on the TV monitor 5. At this time, before the club hits the ball,
The microcomputer calculates so that it will not be displayed on the TV monitor 5 below a certain speed so that the club does not operate even when the club passes the sensor 14 during the practice of waggle for practice.

The trigger 3 is a transmissive optical sensor composed of a projector 16 and a light receiver 18, and is triggered when the club shaft crosses the optical axis of the optical sensor and the club shaft crosses again from top to down. 3 operates, and the strobe control unit 8 to the strobe power supply unit 9 through the retarder 7.
A light emission signal is sent to, and the light emitting unit 4 flashes. In addition, the flash control unit 8 is a frame memory 10 built in the case 15.
Send an external signal to the video camera 2, via the retarder 11,
The 2 ′ image is recorded in the frame memory 10. Case 15
There is a selector switch on either of the video cameras 2,
The image of 2'is displayed on the TV monitor 5. Further, the case 15 is provided with an on / off switch for the frame memory 10. By turning off this switch, the image of one of the video cameras 2 and 2'is displayed on the TV monitor 5.
Can be projected on.

The light emitting unit 4, the TV monitor 5, the trigger control unit 6, the retarder 7, the strobe control unit 8, the strobe power supply unit 9, the frame memory 10, the retarder 11, and the microcomputer (not shown) are housed in one case 15. .
The television monitor 5 is provided at a position and height where the golfer 1 can confirm it by simply moving his / her eyes when he / she addresses at the bat. When displaying the image captured by the video camera 2 set above the golf player 1 on the TV monitor 5, a cursor can be displayed on the TV monitor 5 to check how the golf club enters (outside in, inside out, etc.). Leave.

As another configuration example of the trigger 3, as shown in FIG. 3, a first bracket 17 to which a light projector 16 is attached and a light receiver 18 are provided.
The second bracket 19 for mounting is provided, and the first and second support legs 20 and 21 set to a predetermined height are attached to the both brackets 17 and 19, and the lower ends of the both support legs 20 and 21 are attached. The bent ends are connected by connecting legs 22.
The mounting holes 23 and 24 of both brackets 17 and 19 are machined so as to be on the same line. The first and second support legs 20 and 21 are formed of steel round pipes or aluminum pipes, and connecting legs 22 made of the same material are welded to these. The length of both support legs 20 and 21 was about 300 mm, and the distance between both support legs 20 and 21 was set to about 1800 mm, which does not hinder the golf swing. The brackets 17 and 19 are so constructed that height adjustment and left / right deflection adjustment can be performed within about ± 0.5 mm. With the trigger 3 configured in this way,
A great amount of time is wasted in aligning the optical axis with the light receiver 18 of the light projector 16 as in the case where the light projector 16 and the light receiver 18 are mounted on separate members.

〔effect〕

As described above, according to the present invention, the moment of high-speed impact is displayed on the TV monitor as a multiple image on the spot by the combination of the video camera, the light emitting unit, and the frame memory. It is possible, and it is satisfactory and reliable. In addition, it is possible to display the defects and head speed of the golfer on the TV monita, which facilitates analysis. Also, unlike conventional stroboscopic photography, still images can be captured while the surroundings remain bright. Also, since a large number of instantaneous poses are recorded in one frame, unnecessary images are eliminated from the beginning, which is economical.
In particular, in the present invention, the retarder connected to the trigger control unit is used, even if there is individual difference in the time from the moment when the golf club is sensed by the trigger to the moment when the golf club impacts the ball, it is further used. Even if this time varies depending on the type of golf club, the timing is adjusted so that a plurality of instantaneous poses of the golf club and the ball can be projected in one frame of the video camera. In addition, the retarder connected between the strobe control unit and the frame memory can match the timing of strobe emission and image capture. By using these two retarders, the instantaneous poses of a plurality of golf clubs and balls projected by the flash of the light emitting part were recorded in one frame of the video camera, and the recorded images were frozen and frozen in the frame memory. The video signal is output from the frame memory to the TV monitor and can be displayed on the monitor.

[Brief description of drawings]

FIG. 1 is an overall perspective view, FIG. 2 is an overall block diagram showing an embodiment for recording the moment of impact of a golf club, and FIG. 3 is a perspective view showing an example of a sensor device. 1 ... Golfer, 2, 2 '... Video camera, 3 ... Trigger, 4 ... Light emitting part, 5 ... TV monitor, 6 ... Trigger control part, 7 ... Retarder, 8 ... Strobe control part, 9 ... Strobe power supply part, 10 ... Frame memory, 11 ... Retarder, 14
… Sensors, 15… cases.

Claims (1)

[Claims] 1. A light emitting section (4), a video camera (2), a frame memory (1) at the moment of impact of a golf swing.
In the golf practice device displayed on the TV monitor (5) by the combination of (0), the trigger (3) is installed in the trajectory for swinging the golf club, and the trigger (3) is passed when the golf club passes through the trigger (3). Control unit (6) that receives the detection signal from the
And the retarder (7) that receives the signal from the trigger control unit (6) is connected to the trigger control unit (6), and the strobe control that receives the signal from the retarder (7) to the retarder (7) The flash control section (8) receives the light emission signal from the flash control section (8) and the flash control section (8) receives the light emission signal from the flash control section (8) a plurality of times for one frame of the video camera (2). Connect a strobe power supply (9) that gives a flash output and a retarder (11) that outputs an external signal to the frame memory (10), and connect the video camera (2) and the retarder (11) to the video camera (2). To detect the head speed in the golf club by connecting the frame memory (10) that sends the video signal from the camera and the external signal from the retarder (11) and sends the video for one frame to the TV monitor (5) Retarder for delaying the at regular intervals just before hitting the ball is placed a sensor (14) does not operate in the following constant speed, and sends a fixed time signal to the next (7)
Adjusts the difference in the time it takes for the golf club that passed the trigger (3) to impact the ball, and adjusts the difference between the individual and the club count so that multiple shots of the ball and club can be taken on the screen of one frame. The retarder (11) is a golf practice device characterized by being able to take multiple shots of a ball and a club in a single frame screen at the same timing of strobe emission and image capture.