JPS5946982A - Golf exerciser - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an electronic device that detects the moving speed of the club head and ball during a swing and can calculate and display ball data such as horizontal launch angle and velocity with respect to the launch target. Regarding golf practice devices, conventional and simple golf practice devices are mainly ones such as swing correctors, devices that detect the movement of the club head, and devices that use horizontally wrinkled balls. was. However, considering that the sport of golf is a competition to get the ball into the cup in the fewest number of strokes, the key to improving your golf skills is to become proficient at freely controlling the direction and distance of the ball. To achieve this, a device that accurately and objectively detects and displays the data of the ball being launched is desired.However, with the above-mentioned practice devices, the ball is hit at high speed and in a random direction. However, it is difficult to accurately detect a ball that has fallen, and this method does not meet the above objective. However, if you want to obtain accurate various data, for example, the horizontal direction (b) launch angle must be detected from the vertical direction, and the vertical launch angle must be detected from the horizontal direction. For example, a large number of light-emitting elements and light-receiving elements are required in the horizontal direction, and the actual apparatus has the disadvantage of being bulky.

The present invention has been made in view of the above drawbacks, and includes a detection means for detecting the movement states of the golf ball and the club head after hitting, a calculation processing means for processing the detection signal from the detection means, and a calculation processing means for calculating the detection signal from the detection means. display means for displaying the output from the arithmetic processing means as data regarding the golf ball, the arithmetic processing means arithmetic processing the two types of detection signals output from the detection means, and displaying two types of detection signals each including velocity data. erroneously displaying club head data as data related to the golf ball by calculating two data groups, comparing the two speed data, and outputting the data group containing the larger speed data as the data group related to the golf ball. To provide a golf practice device without

Ru.

In the figure, 1 is the main body of the golf practice device, 2 is the base plate 3
A mat having a grass-like portion is placed on the mat, and numeral 4 indicates a target direction by a white line drawn on the mat and a base portion 9, which will be described later. 5 penetrates the mat 2 and attaches to the base plate 3
A golf ball 6 is placed on the tee, γ3 is the club head, e is the ideal flight axis of the ball, and the projection line from above coincides with the white line 4. 9
10 is a base part extending and integrally provided with the base plate 5 in the direction in which the ball 6 is launched, and 10 is a part of the base part 9 on the side opposite to the batter with the ideal fly ball axis 1 of the ball 6 as the center. A signal detection section is installed upright at the end and houses circuits, etc., which will be described later.

11.12 indicates first and second signals composed of a pair of light receiving element groups provided on the substrate 13 in the signal detection unit 10 at a predetermined distance 1 in the direction of the ideal fly ball axis γ and substantially parallel in the vertical direction. It is a detection means.

The light receiving element group 11 includes light receiving elements 11 arranged at intervals r.
a...11k, and the light receiving element group 12 is similarly made up of light receiving elements 12a...12n.

Reference numeral 13 indicates the ideal flight axis of the ball 7ff: a signal generating section provided at the end of the base section 9 on the opposite side from the signal detecting section 10 as the center, and 14 and 15 indicate the white lines of the light receiving element groups 11 and 12, respectively. The first and second signal generating means are comprised of light emitting elements provided within the signal generating section 13 extending in the perpendicular direction to the signal generating section 4. The light emitting element 14 is set so that its optical axis coincides with the center of the light receiving element group 11.12 so that the entire light receiving element group 11.12 can be illuminated.
The optical axis is set to coincide with the center of the light receiving element group 12 so that the entire light receiving element group 12 can be irradiated. 17 and 18 are photodetector group 1, respectively.
1.12 is a group of through holes formed in a cover plate 19 that protects the front surface of each light receiving element 11a...11k.
From the through holes 11...17k corresponding to the through holes group 18
is a through hole 18 corresponding to each light receiving element 121L...12n.
It is composed of 2L...18n.

58 is a display device to be described later that processes signals from the main body 1 and displays ball data related to the swing; 21 is a display unit;
23 is a main switch, 59 is a club selection switch which will be described later, and 25 is a cable.

Next, the method of measuring various data of the ball, which is the principle of this invention, will be explained based on FIGS. I will explain.

FIG. 6 is a diagram showing the principle of calculating the launch angle of the ball in the horizontal direction, and the straight line a is projected from above the plane a'fc of light from the light emitting element 14 to the light receiving element group 11. The straight line is a plane of light from the light emitting element 15 to the light receiving element group 11 projected from above. The straight line C is a plane C of light from the light emitting element 15 to the light receiving element group 12 projected from above, and is parallel to the above-mentioned straight line aa. The straight line d is a projection of the ideal fly ball axis γ of the ball 6 from above and indicates the direction in which the ball travels in the horizontal direction.
, C are orthogonal to each other. i is a pair of light receiving element group 1
1,120 distance, j is the distance from the light emitting element 15 to the straight line d, 1 is the distance from the placement point S of the ball 6 to the straight line a-1, θ
is the intersection angle between the straight line and the straight line mc.

If we consider in detail the case where the ball 6 is launched along the fly ball line e, the fly ball line θ is shown by a straight line θ by projection from above, and the intersection angle α between this straight line me and the straight line d is the ball 6 It is expressed as the launch angle in the horizontal direction of the fly ball line e. m, m, and m are the planes of light a, respectively.

b, O'l indicates the points projected from above of the horizontal points M , M , and M, which are on the straight lines a, b, and c, respectively. m, m,
m is the intersection point where straight line d intersects straight lines a, b, and c, respectively;
p is the intersection of the perpendicular line from m to straight line d, and the distance between 9m and p is X, and the time T required for the ball 6 to pass between M and M and the time T required for the ball 6 to pass between M and M are By measuring, the following equation is calculated from a simple geometrical calculation.

T’　　　　　　　　+11 -1-T Further, the distance between m and m is expressed by the following formula.

K=1-j-θ (2) Also, the following equation is calculated from the figure shown in FIG. 6 based on geometric calculations.

In order to determine whether the value is υ, it is sufficient to compare the above formula +11 with the formula (2).In other words, when K>x, K
(When it is X, it is sufficient if it is shifted to the left.

Next, FIG. 4 is a diagram showing the principle of calculating the projection height angle of the ball 6, where H is the height of the light receiving element 12C that detects the point M where the ball 6 crosses the light beam plane C. If the elevation angle of the fly ball e from the horizontal plane is β, the projection angle of light from the light emitting element 15 to the light receiving element 12C is 9, and the distance on the horizontal plane from the light emitting element 15 to the light receiving element group 12 is J, then the following formula is calculated. be done.

J(4) The following equation can also be calculated based on simple geometric calculations.

−1 staff α・plow β−plow , +τ−((1+i)佽α+jl(51
Next, FIG. 5 is a diagram showing the principle of calculating the absolute velocity of the ball 6 when it flies out, and shows the time difference ' from the point M where the light crosses the plane a'r to the point M where the light crosses the plane C'ff, and the above M and M
The following equation can be calculated from the distance between

i V = □

Light emitting elements 14, 15. In the light receiving element group 11.12 and each of the light receiving elements 111L...11, the light receiving elements 12L...
・If the geometric positional relationship of 12n is fixed, the flight direction and speed of the ball 6 will be the same as the above time difference T, T.
By detecting the height H and the height H, arithmetic processing is performed according to equations (11 to (6)) and one display can be performed.

However, the signal source for detecting the time differences T, T and height H is not only the ball 6 but also a signal generated by the club head 73 that is swung to hit the ball 6.

Generally, when you hit a ball with a club, the repulsive force of the ball is added to the head speed of the ball, so the absolute speed without considering the directional component is always greater for the ball, but golf clubs have a loft angle, The ball will be launched at an angle of elevation relative to the ground. Therefore, if you hit the ball with a club with a large loft angle, the club head may block the light receiving element group 11.12 first.
In this case, if the first signals of the light-receiving element groups 11 and 12 are determined to be ball signals, the data of a 9-miss swing of the club may be erroneously displayed as ball data.

Therefore, in the present invention, in order to prevent this, the light from the +12 light receiving element groups 11.

By measuring the time difference T, T and height H of the second shot, calculating the absolute velocity V from these values using the above formula, and displaying the larger calculated value of V on the display section as ball data, The feature is that the data is separated from the data for cutting off light from the club head to the light receiving element groups 11 and 12. This is based on the fact that the ball is always faster than the club head in terms of absolute velocity (magnitude component that does not include direction).

A diagram of this principle is shown in FIG. In subgroup 6 diagram (a),
When the club head 73 hits the ball 6, the ball 6 bounces off the face of the club head 13 and flies out as shown in FIG.
2 generates a cutoff signal, and then the club head 73 generates a cutoff signal as shown in FIG. 6(c). This state is shown as a model in FIG. Because of this, the light receiving element group 11.1
2, each with the detection signal of the first comrade.

Nine time differences T, T and height H are measured using the detection signals of the second shot as detection data sets.

FIG. 7 shows an example of a circuit that realizes the above principle as an actual system.

In the figure, 31 is an oscillation circuit that oscillates a high-frequency signal;
32 is a modulation circuit that separates and outputs this high frequency signal into, for example, a signal signal and a signal B having different phases; 33 is a signal A amplification circuit; 34 is a signal B amplification circuit; 35 and 36 are driver circuits, respectively. It drives the light emitting elements 14 and 15.

3γ and 38 are amplification circuits that amplify the detection signals from the light receiving elements 11...11 and 12a...12n, respectively; 39.40 is a demodulation circuit that removes noise components and performs waveform shaping, etc.゛Circuit.

41 and 42 are a signal large detection circuit and a signal B detection circuit, respectively, which process the signal from the demodulation circuit 39 to detect the signal person and the signal B, and 43 also process the signal from the demodulation circuit 40 to detect the signal B. The signal B detection circuits 44a, . . . , 44 to be detected include an amplification circuit 37, a demodulation circuit 39, and a signal A detection circuit 4, respectively.
1 and a signal B detection circuit 42, a detection circuit 45a.
... 45n are the amplification circuit 38, the demodulation circuit 40, and the signal B, respectively.
This is a detection circuit consisting of a detection circuit 43. 50 is signal A
A signal person cutoff detection circuit 51 receives a signal person detection signal from the detection circuit 41 and detects that the ball 6 and the club head 73 cut off light from the light emitting element 14 to the light receiving elements 11a...11. 52 is a signal B cutoff detection circuit that similarly receives the detection signal of signal B and detects that the ball 6 and the club head 73 cut off the light from the light emitting element 15 to the light receiving elements 12a, 2, . . . 12n.
In response to the detection signal of signal B from the detection circuit 43, a signal B cutoff detection circuit detects that the ball 6 and the club head γ3 cut off light from the light emitting element 15 to the light receiving elements 12a...12n. 53 receives the detection signal of signal B from the signal B detection circuit 43, and the ball 6 and the club head 73 transmit the light from the light emitting element 15 to the light receiving element 12a.
. . . 12n, a position detection circuit that detects which one of 12n is cut off and outputs the position of the cut off light receiving element, 60
, 61, 62, and 63 are sequential circuits that separate the first and second of the two signals generated in the signal cutoff detection circuit, 50, 51, 52, and the position detection circuit 53, respectively.

55& + 56& are timers whose operation is controlled by the first pulse, and 55& is a signal cutoff detection circuit 5.
A timer 56a starts time measurement at the 001st cutoff signal and stops at the first cutoff signal from the signal B cutoff detection circuit 51. This is a timer that is stopped by a cutoff signal from the signal B cutoff detection circuit 52. 55b and 56b are timers whose operation is controlled by the second pulse, and 55b starts time measurement with the second cutoff signal from the signal person cutoff detection circuit 50, and starts time measurement by the second cutoff signal from the signal B cutoff detection circuit 51. The timer 56b, which stops at the first cutoff signal, starts time measurement at the second cutoff signal from the signal B cutoff detection circuit 51 and stops at the second cutoff signal from the signal B cutoff detection circuit 52. It is a timer. 57 is timer 551L
156& and the first pulse of the position detection circuit 53, calculate the horizontal launch angle, speed, elevation angle, etc., and also perform the same calculations in response to the second pulse of the timers 55b, 56b and the position detection circuit 530. , the data of the larger velocity V determined by equation (6) among both calculated data is used as ball data, and the launch angle, velocity, and elevation angle of this one are displayed on the display section V, and the high-output logic operation circuit 58 receives this data. This is a display device that displays information about the ball that was hit. 59 is the logic operation circuit 5 which switches between an iron type club, which is hit by placing the ball 6 directly on the mat 2, and a wood type club, which is placed and hit via the tee 5.
This is a club selection switch that corrects the arithmetic processing in 7.

The operation of the above configuration will be explained.

First, the player changes the club selection switch 59 to select a wood, and then hits the ball 6 placed on the tee 5. The hit ball 6 and club head 73 are illuminated by light emitting elements 14 and 15.
and the light plane a formed by the light receiving element groups 11 and 12.
,b,c. The light receiving element groups 11.12 normally receive light from the light emitting elements 14.15, and the detection circuits 44a...44k output signals A and B, respectively, and the detection circuits 451L...45n output signals. B is output, but the light interruption caused by the ball 6 or club head γ3 crossing the light plane a is:
The output is detected by the signal cutoff detection circuit 50, and the output is separated into a first pulse and a second pulse by a sequential circuit 60, which start timers 55a and 55b, respectively, and then detect the light generated by crossing the plane bi. The interruption is detected by the signal B cutoff detection circuit 51,
This output is sent to the sequential circuit 61, and the first pulse is sent to the timer 5.
The second pulse stops the time measurement of the timer 55b, and at the same time, the first pulse starts the timer 56a and the second pulse starts the timer 56b. Furthermore, the ball 6 or the club head 13
The light interruption caused by the light passing across the light plane C is detected by the signal B cutoff detection circuit 52 and the position detection circuit 53, respectively, and the output from the signal B cutoff detection circuit 52 is first sent to the sequential circuit 62. The pulse of timer 56
The second pulse at 1L' stops the time measurement of the timer 56b, and the 9 position detection circuit 53 determines from which light receiving element of the light receiving element group 12 the light interruption is detected, by the sequential circuit 63. It separates and outputs the results. With these, the logic operation circuit 51 is activated by the timer 55a.
It receives the first Q output from the timer 5El and the position detection circuit 53 and performs arithmetic processing according to equations (1) to (6), and also receives the second output from the timer 55b, the timer 56b and the position detection circuit 53. Expression (1) to expression (6
).

Then, from among the two sets of calculated data, the speeds calculated by equation (6) are compared, and as a result of the comparison, the data group containing the larger speed is moved to the display device 58 and displayed. By adopting this method, ball data can be displayed correctly even if the sick love head blocks the light first.

In this embodiment, the detection means is composed of a light receiving element and a light emitting element, but the present invention is not limited to this, and for example, a combination of an ultrasonic generating element and an ultrasonic detector may be used.

In short, it is sufficient to detect the moving state of the ball.

Also, the effective pitch r of the light receiving elements should be smaller than the diameter of the ball.

Needless to say, the smaller the pitch r, the more accurate the data will be.

As explained above, according to one aspect of the present invention, there is provided a detection means for detecting the movement states of the golf ball and the club head after hitting, a calculation processing means for calculating the detection signal from the detection means, and a calculation processing means for calculating the detection signal from the detection means. display means for displaying the output from the means as data to be applied to the golf ball; erroneously displaying club head data as data related to the golf ball by calculating two data groups, comparing the two speed data, and outputting the data group containing the larger speed data as the data group related to the golf ball. There is no.

Accurate and objective golf ball data can be obtained,
This makes it possible to provide a golf practice device that is highly effective for golf practice.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a golf practice device showing an embodiment of the present invention, Fig. 2 is a sectional view of main parts showing the relationship between a light receiving element and a light emitting element, and Fig. 5 shows the horizontal launch angle of a ball. Figure 4 is a diagram of the principle for calculating the launch angle of a ball in the vertical direction. Figure 5 is a diagram of the principle for calculating the velocity of the ball in the flying direction. Figure (a)
(B) and (C)) are principle diagrams showing a state in which both the ball and the club head output detection signals, and FIG. 7 is a circuit functional block diagram of a golf practice device according to an embodiment of the present invention. In the figure, 11 is a first signal detection means consisting of a group of light receiving elements, 12 is a second signal detecting means consisting of a group of light receiving elements,
14 is a first signal generating means made of a light emitting element, 15 is a second signal generating means made of a light emitting element, and 58 is a display device. Agent Shin Kuzuno - (1 other person) Figure 5 O Figure 6

Claims (1)

[Claims] A detection means for detecting the movement state of the golf ball and the club head after hitting, a calculation processing means for processing the detection signal from the detection means, and an output from the calculation processing means is displayed as data regarding the golf ball. and a display means, and the arithmetic processing means calculates two data groups each including velocity data by processing the two types of detection signals output from the detection means, and displays these two velocity data. A golf practice device characterized in that a data group containing the larger velocity data is output as a data group regarding golf balls.