KR101470697B1 - Ball maker for putting distance and putting direction - Google Patents

Abstract

The present invention relates to a ball marker for indicating a putting distance and a putting direction, and a ball marker for converting a putting distance and a putting direction through a distance per m between a ball on the green of the golf and a hole cup, A two-axis sensor that reads an inclination angle (? _X : an inclination angle between front and back of the ball and a hole cup, and? _Y : a right and left inclination angle between the ball and the hole cup); A digital converter for converting the inclination angle (? _X ,? _Y ) of the putting green read by the sensor into a digital signal; A microprocessor for calculating a flat putting distance and a putting direction according to the inclination angles? _X and? _Y ; And a display for displaying the values calculated by the microprocessor comprising a built-in, the ball and that the inclination angle (θ _y) flat putting distance and putting direction in accordance with the acceleration is multiplied by the value displayed on the display to the distance between the hole cup In the case of an uphill or downhill putting with an inclination angle between the ball and the hole cup, it is possible to accurately determine the putting distance to be put on the flat surface.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a ball marker for indicating a putting distance and a putting direction,

[0001] The present invention relates to a ball marker for indicating a putting distance and a putting direction, and more particularly to a ball marker for detecting a distance between a ball and a hole cup, The digital converted value is composed of a microprocessor for calculating and a display for displaying the calculated value. Using the values displayed at the time, the user can specify the putting distance and putting direction according to the inclination angle and the inclination angle between the ball and the hole cup. To a ball marker.

The golfer must put the golf ball in the hall cup by putting it in the direction of the distance from the green. Normally, the distance between the ball and the hole cup is measured before putting. Normally, the distance from the ball to the hole cup is measured by foot, and when the green slope between the ball and the hole cup is uphill, Putting is longer than the measured distance, and when it is downhill, putting is shorter than the distance measured by the foot.

In practice, however, how much longer or shorter the putting is when it goes uphill or downhill depends on the golfer's experience and subjective judgment. In this case, it is difficult to adjust the correct putting distance due to inaccurate measurement There is a problem.

Also, in the case of the putting direction, there is a problem that the golfer puts in an incorrect putting direction in which the correct putting direction is unknown because the golfer visually observes the left and right inclination of the green between the ball and the hole cup, .

Korean Patent No. 10-0940588 Korean Patent No. 10-0630462

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a two-axis sensor for reading the front, rear, and right and left inclination angles between a position of a ball on a green and a hole cup, The slope of the left and right is converted into a digital signal by a digital converter and then the microprocessor computes the digital signal through a relational equation between the kinetic energy of the ball moving to the hole cup and the thermal energy due to the friction, And a ball marker for indicating a putting distance and a putting direction to be put if the ball is a flat ball through the putting angle displayed on the display according to the value displayed on the display and the right and left tilting angles measured experimentally.

In order to achieve the above object, a ball marker according to the present invention is a ball marker capable of converting a putting distance and a putting direction through a distance between a ball on a green of a golf ball and a hole cup, θ _x : an inclination angle in the x-axis direction, which is a virtual linear axis connecting the ball and the hole cup, and θ _y , a y-axis direction, which is a linear axis perpendicular to or intersecting with the x- A two-axis sensor for reading the tilt angle); A digital converter for converting the inclination angle (? _X ,? _Y ) of the putting green read by the sensor into a digital signal; A microprocessor for calculating a flat putting distance and a putting direction according to the inclination angles? _X and? _Y ; And a display for displaying a value calculated by the microprocessor, wherein a distance between the ball and the hole cup is multiplied by a value displayed on the display, and the difference between the distance and the putting angle? And the putting distance and the putting direction at the time of the putting.

It is preferable that the two-axis sensor is a two-axis tilt sensor or a two-axis acceleration sensor.

In addition, the components of the ball markers are embedded in a smart phone as hardware, a program for driving the hardware is stored as an application, a value calculated by the microprocessor is displayed on the display of the smart phone, the distance between the hole cup that, depending on the inclination angle (θ _y) of subtraction by multiplying the values shown in the display is preferably flat so as to inform the putting distance and putting direction.

According to the ball marker indicating the putting distance and putting direction of the present invention, if the distance between the ball and the hole cup on the green is flat, the putting distance can be easily detected by measuring the foot step. However, In the case of an uphill or downhill putting, it has an effect of knowing precisely the putting distance to be putt.

Further, in the case of a side lie putting having a right-left inclination angle between the ball and the hole cup, there is an effect that the putting direction can be accurately known through the relationship value between the left-right inclination angle and the putting angle.

In addition, even when the front and back and right and left inclination angles are simultaneously present between the ball and the hole cup, the above-described measuring method can be simultaneously applied to accurately determine the putting distance and putting direction.

Moreover, such a ball marker can be stored as an application in a smart phone, and can be used by simply using a one-axis or two-axis air-drop leveler.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram illustrating the components constituting a ball marker according to the present invention.
Fig. 2 is a schematic diagram showing the inclination of the putting green and the coordinate axes
Fig. 3 is a schematic diagram showing the relationship between the front-rear inclination angle & amp _; thetas; _x of the putting green and the height
4 is a schematic diagram showing a display screen of a ball marker according to the present invention.
Fig. 5 is a schematic view of a smartphone when the ball markers according to the present invention are stored in an application as a smart phone and used
6 is a schematic diagram showing a display screen of a ball marker according to the present invention, which is applied by applying a uniaxial air bubble leveling system
FIG. 7 is a schematic diagram showing a display screen of a ball marker according to the present invention, which is applied by applying a two-axis air-

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a ball marker for indicating a putting distance and a putting direction according to the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to inform.

FIG. 1 is a block diagram illustrating components constituting a ball marker according to the present invention.

As shown in FIG. 1, a ball marker according to the present invention includes hardware such as a biaxial tilt sensor or a two-axis acceleration sensor, a digital converter, a microprocessor, and a display.

The two-axis tilt sensor or the two-axis acceleration sensor reads the forward and backward inclination angles and the left and right inclination angles between the ball and the hole cup of the putting green. The digital converter converts the inclination angle read by the sensor into a digital signal, Is a converted digital signal that calculates the values for the putting distance and the putting direction according to the tilt angle. The calculated value is displayed on a display such as LED or OLED and used as data for indicating the putting distance and the putting direction.

The ball marker indicating the putting distance and the putting direction according to the present invention having such a structure is obtained by measuring the front and rear inclination angles and the height between the ball and the hole cup on the putting green and taking into consideration the putting distance and the putting direction as follows Will be informed.

As shown in FIG. 2, the x-axis (front and rear) and y-axis (left and right) coordinate axes are set on the putting green with respect to the direction of the hole cup and the inclination angle in the _x- and when referred to as a virtual linear axis of the x-axis and the vertical or cross-line axis of the tilt angle in the y-axis direction of θ _y, and the angle between the putter direction forms with the x-axis (putting angle) α connecting the hole cup, the first In the case of θ _x = 0 and θ _y = 0, the putting distance is the distance measured by the foot, the putting direction is the x-axis direction, and the putting angle is α = 0 .

At this time, applying the law of conservation of energy to flat putting is as follows. The kinetic energy of a golf ball that has been priced with a putter is converted to thermal energy by friction as the ball rolls over the green, eventually stopping. This can be expressed as follows.

Kinetic energy = thermal energy

Where m is the mass of the ball, v is the initial velocity of the ball, F is the frictional force, and d is the distance traveled by the ball. The frictional force is given by the following equation.

Where μ is the friction coefficient, and g is the gravitational acceleration. Combining the above formulas:

,

,

,

,

Therefore, knowing the initial velocity v and the coefficient of friction μ, we can know the distance the ball travels. The friction coefficient μ can be obtained by knowing the initial velocity v of the ball and the moving distance d. Table 1 below shows the results of measuring the coefficient of friction in this manner using a stimpmeter measuring the speed of the green. The initial velocity v of the ball was 1.83 m / s.

Coefficient of friction of putting green Amateur green Green for competition Slow usually speed Slow usually speed Steam meter distance (m) 1.35 1.95 2.55 1.95 2.55 3.15 Coefficient of friction 0.13 0.087 0.066 0.087 0.066 0.053

In the case of θ _x ≠ 0 and θ _y = 0, the putting distance is longer than that of the flat surface in consideration of the uphill or downhill. The direction is the x-axis direction, and the putting angle is α = 0.

To take into account how much longer or shorter the putting distance is, respectively, considering the uphill or downhill than the flat ground, apply the energy conservation law for this case as follows.

In the case of an uphill putt, the ball is rolled to a higher position, so the position energy term is added. That is, kinetic energy = thermal energy + position energy is the following relation.

,

,

,

,

Where h represents the vertical height at which the ball travels. In an uphill position, some of the kinetic energy of the ball is converted into position energy, so the ball must hit harder. With such an intensity, the ball will travel an extra distance as it hits a flat putting green and corresponds to the up position energy. Therefore, the following relation holds.

,

,

,

,

The average speed of a putter green usually played by amateurs is about 2 meters. The coefficient of friction at this time is μ = 0.087 from Table 1 above. If the vertical height of the ascent is 1 m, substitute 0.087 for 1 m for μ in the above relation, and obtain a value of d = 1 / 0.087 ≒ 11.5. In other words, if the ascent is 1m high, you have to give more power to the ball with a distance of 11.5m from the 1m putting distance of the flat ground. If the uphill is 0.2 m high, it will be 0.2 x 11.5 = 2.3 m, so you have to put the ball up by 2.3 m more than the 1 m putting distance of the flat ground. When downhill, the vertical height is negative, so you have to give less power to the ball over the extra distance above.

The same equation can be applied when measuring distance by foot. If you go uphill or downhill, you will have to give more or less power to the eleven steps in the above case.

The same equation can be applied using pits in distance units. If you have 1 foot uphill or downhill, you will have to give more or less force to the elevation to 11.5 feet above the ground level.

Next, the relationship between the vertical height of the ascent or descent and the inclination angle? _X is as follows.

For example, FIG. 3 shows the shape of the putting green in the case of ascending. In this case, if the distance measured by stepping the slope distance from the ball to the hole cup is 1 m, the height h of the slope section becomes h = 1 x sin? _X. If you know the height h, you can put it by h = 11.5 × 1 × sin θ _x multiplied by 11.5 measured by the above method. If θ _x is 3 °, substitute 11.5 × 1m × sin 3 = 0.6m in the above equation. In other words, if you measure the height of the slope at 1m, you can put the extra distance 0.6m plus 1.6m, which is considered as a flat putt, into consideration. If the green slope is 3 degrees downhill, you can put 0.4m, which is subtracted 0.6m from 1m, as a flat putting.

If you mark the marker on the ball marker, you can multiply this value by any number of meters, and add or subtract it, then putting it on the flat surface. That is, if the slope distance measured by the foot step is 6 m and the value displayed on the ball marker display is +0.6 (+ is an uphill sign), you can do flat landing with 6m × 0.6 = 3.6m and 6m + 3.6m = 9.6m. (-) value is displayed on the display of the ball marker, the slope distance measured by the step is multiplied by this value, which is subtracted from the measured slope distance, that is, 6 m-3.6 m = 2.4 You can do a flat putting of m.

Thirdly, in the case of side lie putting with no inclination in the front and rear direction, i.e., in the case of θ _x = 0 and θ _y ≠ 0, the forward and rearward directions are flat, Was experimentally measured with respect to the amateur green for normal speed, and the values shown in Table 2 were obtained.

Measured value of side lie putting angle with no inclination before and after and only with right and left slope θ _x (degrees) θ _y (degrees)  alpha (degrees)

0 One 5 2 13 3 21 4 29 5 37

For example, if the distance between the ball and the hole is 3m, the putting distance is 3m. If the right side is higher and the angle _θy is 2 °, the putting direction is 13 ° to the right. = 13. If θ _y = -2 °, the putting direction is 13 ° to the left, ie α = -13.

Fourth, in the case of putting with inclination in both forward and backward directions and right and left inclination at the same time, that is, when θ _x ≠ 0 and θ _y ≠ 0, the forward and backward direction is an uphill or downhill, The putting direction (angle) was measured experimentally for a medium speed amateur green. As a result, as shown in Table 3 below, the putting angle according to the left and right inclination values is shown in Table 3 Should be determined.

If there is both forward and backward inclination and left and right inclination simultaneously, the measured value of the putting angle 慮_x (degrees) θ _y (degrees) alpha (degrees)
Downhill
(? _x < 0) alpha (degrees)
ascent
(? _x > 0) One One 12 3 2 20 5 4 36 9 5 44 11 2 One 17 2 2 25 4 3 34 6 4 41 8 5 49 10 3 One 22 2 2 30 3 3 39 5 4 46 7 5 54 9 4 One 25 2 2 35 3 3 44 5 4 51 7 5 59 9 5 One 30 One 2 40 2 3 49 4 4 56 6 5 64 8

If α> 0 (right), if θ _y > 0, α <0 (left) if θ _y <

For example, according to Table 3 above, if θ _x = 1 and θ _y = 2, the putting direction is 5 ° to the right, ie, α = 5. If θ _x = -1 and θ _y = 20 degrees, that is,? = -20.

Hereinafter, the putting distance d and the putting direction? According to the front-rear inclination angle? _X and the left-right inclination angle? _Y have been described. The front-rear inclination angle? _X and the left-right inclination angle? _Y can be measured using a two-axis tilt sensor, a two-axis acceleration sensor, or a horizontal system built in the ball marker of the present invention. These specific methods will be described in detail through the following examples.

[Example 1] - A ball marker for measuring a front-rear inclination angle (? _X ) and a left-right inclination angle (? _Y ) by applying a biaxial tilt sensor

4 is a schematic view showing a display screen of a ball marker according to the present invention.

 FIG. 4 shows an example of a display screen of the manufactured ball marker. The size of a thick arrow (a number on the arrow) 1.6 is a putting distance d. In this case, if the distance between the ball and the hole cup is, The distance to be put on the flat surface is 1.6 x ym, and the direction of the arrow indicates the putting direction.

The method of use is to place the ball marker on the back of the ball above the green and the vertical line of the display screen of Figure 4 to point to the hole cup. That is, a sensor parallel to the y-axis of the two-axis sensor is positioned to face the hole cup. If between the forward and backward tilt angle θ _x of the dotted arrow direction uphill + θ _x Figure is a ball and the hole-cup measured in step inclined surface distance is 1m, as shown in Figure 2 the height h is in the green section h = 1sinθ _x is do. Here is the distance 11.5 × 1 × sin θ _x multiplied by 11.5, as described above, which should be put extra. If? _X = 3 degrees, this value is 11.5 x 1 x sin 3 = 0.6 m / m as shown in Fig. The user then puts the extra putting distance (1m × 0.6 = 0.6m) = 1.6m considering the slope distance (1m) measured by foot + green uphill slope as a flat putting. This value, that is, the flat putting distance when the distance between the ball and the hole cup is 1 m, is displayed on the display as shown in FIG.

For example, if the slope distance to the ball and the hole cup measured by the foot is ym and the value displayed on the ball marker display is 1.6, the flat putting distance becomes 1.6 x ym. If the slope distance from the ball to the hole cup measured by the foot is ym and the value displayed on the ball marker display is 0.8, the flat putting distance is 0.8 × ym. Thus, the flat putting distance can be easily calculated regardless of the magnitude of the slope distance value measured by the foot step.

The size of the bold (red) arrow in Fig. 4 indicates the putting distance, and the direction indicates the putting direction. The directions of the arrows are obtained from the values of θ _x and θ _y read by the two-axis sensor, and the putting angles are obtained by using the values of Table 2 and Table 3 stored in the memory of the microprocessor.

[Embodiment 2] - Smartphone ball markers using a two-axis acceleration sensor mounted on a smartphone

5 is a schematic diagram of a smartphone display when a ball marker according to the present invention is stored and used as an application in a smart phone.

The same hardware (FIG. 1) as that of the first embodiment is already built in the smartphone, and a two-axis acceleration sensor is built in as a sensor. Therefore, if a program for performing the same operation as in the first embodiment is created and an application is created and stored in a smart phone, it can be used as a ball marker in the same manner as in the first embodiment. An example of a display screen of a ball marker having a display of a smart phone as a display is shown in Fig.

[Example 3] - Ball markers using a uniaxial air bubble level system

FIG. 6 is a schematic view showing a display screen of a ball marker according to the present invention, which is applied by applying a uniaxial air bubble leveling system.

As shown in FIG. 6, a ball marker using a uniaxial air bubble level system uses a uniaxial air bubble level sensor combined with a sensor and a display together with an embedded digital converter and a microprocessor.

As a result of measuring a movement distance from the origin of the bubbles in accordance with the forward and backward tilt angle θ _x of putting distance by uniaxial air bubbles marker ball using supyeonggye representing only haejwoya acceleration much in accordance with the θ _x to obtain a 3mm / degrees results.

On the other hand, the height h of the slope of green is multiplied by 11.5 times 11.5 × h. However, the forward and backward tilt angles θ _x and that, because of the slope of the distance to the ball and the hole cup measured in step Speaking _{y h = ysinθ x, 11.5 ×} h is the (11.5) ysinθ _x. The inclination angle when this value is + 0.1m can be obtained from the following equation.

If y = 1m is substituted here,

= 0.5도가 된다.

= 0.5 degrees.

Since the moving distance of the air bubbles measured before is 3 mm / degree, the air bubbles move by 3 mm x 0.5 = 1.5 mm when the air bubbles are inclined by 0.5 degree. Accordingly, a horizontal scale is drawn at an interval of 1.5 mm on the surface or the inner bottom surface of the ball marker used as the uniaxial air bubble level meter, and the ball marker is placed on the green of the ball position so that the arrow direction of the ball marker shown in Fig. 6 looks at the hole cup If the air bubble has moved by one space from the origin, multiply it by 0.1m per 1m, that is, make a flat putt with slope distance + slope distance × 0.1m measured by foot step. In other words, you can do flat putting by multiplying the distance from the ball measured to the hole to the hole cup by 1.1.

Also, when the green slope is down, count the number of spaces that the air bubble has moved down, and then put the flat surface by subtracting the value of the slope distance measured by the foot step from the value corresponding to this value. In other words, if you move two places down, you can put the flat place by multiplying 0.8 by the distance between the ball and the hole cup measured by foot. When the inclination angle is small, arcsin can be regarded as linear, so it is also possible to display the scale at regular intervals.

In other words, as shown in FIG. 6, when the air bubble is located, the horizontal scale is 2 spaces above (one space is 0.1 mm).

[Example 4] - Ball markers using a two-axis air bubble level system

FIG. 7 is a schematic view showing a display screen of a ball marker according to the present invention, which is applied by applying a two-axis air-drop leveling system.

In addition to the third embodiment, as shown in Fig. 7, the scale in the vertical direction is drawn so as to correspond to a right and left inclination angle of 0.5 degrees (= 1.5 mm) lie) to see if you can see.

In other words, as shown in FIG. 7, when the air bubble is located, the horizontal scale is two spaces upward (one space is 0.5 degrees), and the right side is one degree higher.

Although the present invention has been described with reference to the drawings, it is to be understood that the invention is not limited to the disclosed embodiments and drawings, It is needless to say that various modifications can be made by those skilled in the art within the scope of technical thought.

Claims (3)

A ball marker for converting a putting distance and a putting direction through a distance between a ball on the green of the golf and a hole cup,
The inclination angle of the putting green (? _X : an inclination angle in the x-axis direction which is a virtual linear axis connecting between the ball and the hole cup, and? _Y is a straight line axis perpendicular or intersecting with the x- A tilt angle of the tilt sensor in the y axis direction);
A digital converter for converting the inclination angle (? _X ,? _Y ) of the putting green read by the sensor into a digital signal;
Calculating a flat putting distance and a putting direction according to the inclination angles (? _X ,? _Y ), and displaying the putting distance and the putting direction on a display; And
A display for displaying a value computed by the microprocessor;
And the distance between the ball and the hole cup is multiplied by the value indicated on the display so that the distance between the ball and the hole can be increased or decreased and the putting distance and the putting direction when the ball is placed on the ground according to the putting angle A ball marker with. The method according to claim 1,
Wherein the two-axis sensor is a two-axis tilt sensor or a two-axis acceleration sensor. 3. The method according to claim 1 or 2,
The components of the ball marker are embedded in the smartphone as hardware and a program for driving the hardware is stored as an application and the value calculated by the microprocessor is displayed on the display of the smartphone, Is multiplied by the value displayed on the display to indicate the putting distance and the putting direction according to the inclination angle (? _Y ).

Images