KR20210070409A - Suggesting guide distance system - Google Patents

Abstract

The present invention relates to an apparatus which provides a recommended distance for hitting a golf ball by correcting the measured distance based on actual data, and comprises: a display unit (15) displaying a pin for specifying a target for measuring the distance in a real field with the real field as a background, and displaying data including the distance and angle to the target; a physical distance measuring unit (11) measuring the distance from the user's position to the target and the angle between the ground surface and the target; an input unit (16) for a user to input and select set values in the apparatus; and a sensor unit (14) embedding a sensor.

Description

A system that provides a recommended distance for hitting a golf ball by correcting the measured distance based on actual data {SUGGESTING GUIDE DISTANCE SYSTEM}

It relates to a system that provides a recommended distance for hitting a golf ball by correcting the measured distance based on actual data.

The present invention relates to a system for providing a recommended distance for hitting a golf ball by correcting a distance measured based on actual measurement data, and in the prior art, the distance from the hitting position to the hole before hitting on a golf course is empirically measured or Recently, by using a rangefinder to directly measure the straight distance, it was decided which club to hit according to the distance. However, since the distance measured by the range finder measures only the straight distance and does not take into account the shape of the hit ball flies, there is a difference between the measured distance and the actual flying distance when the ball is hit. In addition, depending on whether the target point is downhill or uphill, there is a difference in the actual hitting target distance depending on the hitting model, but this point is not reflected in the general distance measuring instrument, so an error occurs. If the data is reflected, the error becomes larger, so it is meaningless to reflect this information.

In particular, in golf, rather than the physical distance from the hitting position to the hole, it is more important whether the golf ball flies when the golf ball is hit with one's own swing. have.

Republic of Korea Patent Application No. 10-2006-0020063 'Golf goods with distance and direction sensing function' is equipped with a distance and direction sensing device by embedding GPS in golf shoes, hole cups, and balls, and data related to the distance and direction of each object to be marked on the shoes. It may not be difficult to find the straight-line distance for each object, but since there is a difference between the straight-line distance and the distance the golf ball flies through hitting, measuring only the straight-line distance may not be of much help when using it on a real golf course. .

The present invention has been devised to solve the above problems, and the purpose of the present invention is to calculate the distance by measuring only a straight line distance, but convert it to a striking distance that can fly when an actual golf ball is hit with a golf club.

The present invention relates to a device that provides a recommended distance for hitting a golf ball by correcting a distance measured based on actual data, and displays a pin for specifying a target for measuring a distance in an actual field with a background of the actual field, The display unit 15 for displaying data including the distance and angle to the target, the physical distance measuring unit 11 for measuring the distance from the user's position to the target, and the angle between the ground surface and the target, and the user set values in the device Including the input unit 16 for inputting and selecting and the sensor unit 14 having a built-in sensor, the recommended distance that the striker should consider for hitting a golf ball can be determined by the following equation.

Dre is the recommended distance, Dh is the horizontal distance obtained from the measured distance (linear distance), Dv is the vertical distance, σ1 is the horizontal correction value, and σ2 is the vertical direction correction value.

The environmental variable correction unit 13 is further included. The environmental variable correction unit 13 calculates and stores the influence value of the environmental variable for each distance section in advance, and calculates and recommends the correction value for each environmental variable by using the following equation for each distance section. A device that provides a recommended distance for hitting a golf ball by correcting the measured distance based on actual data that provides a distance

Dmod is the distance correction value, Dpred is the actual distance measurement or theoretical value, W is the current environmental variable value, Wstd is the reference environmental variable value, Var1 is the correction variable value obtained from the actual measurement correction DB, and Var2 is the environmental variable and the environmental variable value from the actual measurement correction DB. It is a given variable.

Quo is a function that returns only the quotient when the preceding number in parentheses is divided by the following number.

The sensor unit 14 may include any one or more of a thermometer, a hygrometer, an altimeter, a gravity sensor, and an acceleration sensor.

By further including an external variable module, an environmental variable value that is not directly sensed by the sensor unit 14 may be input to be reflected as a correction value in the environment variable correction unit 13 .

The physical distance measuring unit may specify the distance by measuring the time of irradiating the laser to the target and the reflection.

It further includes a striking distance correction unit, and the striking distance correction unit 12 calculates the horizontal distance (x) and the vertical distance (y) using the measured distance (A) and angle (B), and calculates the x + y value and Using any one or more of the golf clubs used as an index, the seating angle C stored in the seating angle measurement DB 30 is obtained, and the horizontal correction distance z can be obtained by the following equation.

x=Cos(B)*A, y=sin(B)*A, z=y*tan(C)

The correction distance z or Dmod is added to the recommended distance, and the final recommended distance is obtained and provided.

According to the invention as described above, the effect of each environmental variable can be easily calculated and has the effect of providing a predicted value of a flying distance close to the actual value.

1 to 6 are diagrams showing the configuration of a system according to the present invention;

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a diagram showing the configuration of a system according to the present invention. The system according to the present invention includes a physical distance measuring unit 11 that measures the distance from the user's location to a target, a striking distance correcting unit 12 in which a hit ball flies based on the physical distance, and an environment such as temperature, humidity, altitude, etc. It includes an environmental variable correction unit 13 considering the negative impact. In addition, the sensor unit 14 including a gravity sensor for measuring temperature, humidity, and altitude measurement values and the degree of inclination of the device for distance correction, and a display unit 15 for displaying data to the user and the user and an input 16 for making selections/adjustments.

The physical distance measuring unit 11 measures the distance between the point at which the user stands and the target point using a conventionally used method. In general, a method using a laser is often used, and a method of shooting a laser toward a target point and measuring a distance by receiving a reflected laser may be used. In addition, other known methods may be used.

2 and 3 show the actual straight distance, the correction distance, and the angle to the displayed target as an embodiment of the display unit 15 of the device according to the present invention. The actual straight line distance is a result of measuring the distance from the location where the user is located to the target by the physical distance measuring unit 11, and the distance to the target is measured by allowing the user to select the target in the form of looking at the display. To this end, the actual field is shown in the background of the display unit 15 as it is, and the pin indicated by the circle and cross in FIG. 2 is used to aim the target. When the target is selected, the distance to the target is measured and displayed.

Also. By allowing the user's height (eye height) information to be input in advance, when measuring the slope from the ground surface to the target, a more accurate value can be obtained considering the user's height And it can have a built-in gravity sensor to measure the degree of inclination.

In the embodiment shown in FIG. 3 , when a user selects a target using a pin displayed on the display unit 15, a screen in which the distance and slope to the target are calculated and a screen in which the recommended distance is displayed are alternately displayed with the target in the background. . In addition, the recommended distance may be displayed in consideration of only ballistics or at least one of two recommended distances in consideration of the surrounding environment such as humidity, temperature, and altitude.

Figure 4 compares the model of the batted ball used in the present invention and the model of the batted ball generally used. Conventional products use a model in which all balls fly in a uniform shape, which does not take wind resistance into account, and the horizontal distance from the hitting point to the highest point is almost the same as the horizontal distance from the highest point to the landing point. However, since the actual hitting ball receives air resistance, even if the influence of wind is not considered, the horizontal distance from the peak to the landing point is much shorter than the distance from the hitting point, and the flight distance is also affected by this. In addition, since the angle at the seating point varies depending on the distance from the highest point, there is a slight difference in the seating point according to the distance and height. As shown in FIG. 4, the angle between the landing point and the highest point with the ground varies depending on the hitting model, so the correction distance is calculated according to the club used. At this time, it is assumed that the angle of the ball toward the landing point is proportional to the sum of the vertical and horizontal distances to the target, and the angle of the ball toward the landing point is calculated according to this distance and the club used. Since the approximate flying distance is determined according to the golf club used by the user, the user may store his/her flying distance data in the club DB 32 in advance.

In the present invention, the trajectory of the ball is predicted in a different way by applying a different distance model according to the distance, and the hitting distance correction unit 12 corrects the hitting distance according to the distance model. Although it has performance, as the performance increases, the cost increases and the calculation takes a lot of time. Therefore, the model used in the central processing unit of the product such as the present invention does not require complicated calculations, and the striking distance correction unit 12 performs complex calculations. In order not to do this, refer to the pre-calculated table rather than directly calculating it.

That is, the angle of the ball toward the landing point is calculated in advance according to the distance sum of the vertical distance and the horizontal distance to the target and the club used, and stored in the landing angle measurement DB 30. From this, the type of club and the distance value are indexed. The striking distance correction unit 12 calculates the distance correction value in the horizontal direction.

5 shows a method for calculating the corrected distance in the present invention.

If the straight line distance and angle between two points are known, the horizontal distance and the vertical distance can be easily calculated by the trigonometric formula. Rangefinders currently on sale provide straight-line distance and horizontal distance, which is different from actual movement of the batted ball because it is a value calculated from a simple trigonometric function.

A is the distance measured by the physical distance measuring unit 11 and B is the angle measured by the sensor unit 14 . It is the angle formed with the ground surface considering the height of the person standing at the angle measured by the actual measuring device. The horizontal distance x = Cos(B)*A is calculated, and the vertical distance is y = sin(B)*A.

The angle C is used to obtain the corrected distance z, which is calculated by z=y*tan(C). C uses a value obtained in advance by actually measuring it, and selects the x+y value and the type of club (number of irons, etc.) from a table as an index. An example using the above-described formula is shown in FIG. 6 . Using x+y values as an index is easy to calculate and is generally used because there is a correlation. The seating angle measurement DB 30 stores the angle when seating the x + y value and the club value as an index.

In addition, the environmental variable correction unit 13 serves to correct the corrected distance currently obtained based on the actual measurement data to a numerical value closer to the actual measurement. To this end, variables of factors affecting the flight distance are stored for each distance, and the recommended distance is corrected using these variables. The recommended distance to be corrected is the distance in the horizontal direction. Usually, the user knows how much distance a user can send with an iron, etc. These distances are mainly obtained by practicing on flat ground, but the distance obtained using a range finder is not a horizontal distance, but a horizontal component and a vertical direction. Since it is a straight-line distance that has all of the components, if you simply consider the length of the horizontal component you usually hit, or consider only the straight-line distance, you will fly less than the usual distance. Since the distance the ball is usually sent is the distance it was sent on flat ground, in the case of a hill, when hitting with the same hitting form, you must look farther than the horizontal distance to hit. Because of the hill, the ball travels less than the original distance due to the effect such as stopping or catching someone. Conversely, if you go downhill, you can fly longer than the original distance, but you should not hit according to the distance you normally send.

Therefore, in the case of hills and downhills, the recommended distance that the striker should consider from the straight-line distance is calculated from the following formula.

Dre is the recommended distance, Dh is the horizontal distance obtained from the measured distance (linear distance), Dv is the vertical distance, σ1 is the horizontal correction value, and σ2 is the vertical correction value. σ1 and σ2 are calculated in advance according to the terrain predicted from the measured distance and angle and stored in the form of a table. More simply, it may be a value obtained from an actual measurement angle. That is, Dre is obtained according to the above equation by finding predetermined σ1 and σ2 according to the actual measurement angle.

It would be best if the recommended distance close to the measured value can be obtained with a single equation, but since the variables affecting the recommended distance are non-linear equations that cannot be modeled with a single equation, the recommended distance is used to obtain a value closer to the measured value. The recommended distance is obtained by applying different values to each recommended distance, assuming that the variables that influence are obtained and that the influences of these variables on the recommended distance are independent and not related to each other.

Actual temperature, altitude, and humidity influence each other on the flying distance, so the variables themselves may not be independent. However, if the distance is divided into sections by distance, the influence of each variable decreases, so it is possible to treat them as independent variables. This was proved by finding the correlations for each variable in the state that it was divided into sections.

The actual measurement correction DB 31 stores environmental variables for correcting the influence of various environmental variables for each section by dividing the flying distance after hitting the golf ball by section. The environmental variables were obtained and stored using the multivariate regression method. When the environmental variables were obtained by dividing them by sections, the correlation between the environmental variables and the distance was higher than the correlation between the environmental variables and the distance obtained without dividing them by section.

The correction value of the distance by the environment variable is obtained by the following formula.

Dmod is the distance correction value, Dpred is the actual distance measurement or theoretical value, W is the current environmental variable value, Wstd is the reference environmental variable value, Var1 is the correction variable value obtained from the actual measurement correction DB, and Var2 is the measurement correction DB (31). It is a variable given along with the environment variable. Quo is a function that returns only the quotient when the preceding number in parentheses is divided by the following number.

[Table 1]

For example, when calculating the flying distance correction value by temperature, if the predicted value of the flying distance, which is the sum of the measured distance and the corrected distance, is 150 meters, the temperature correction variable for 150 meters in Table 1 is 0009936825. In the actual measurement correction DB 31, Wstd is 25, Var2 is 5, and Var1 is 0009936825 in Table 1, and when this is put into the above equation, -5,449046336 is obtained. This is a correction value only by temperature, and correction values for altitude and humidity can be obtained in the same way. The correction value obtained in this way is added to the theoretical predicted value Dpred to obtain a value close to the actual value. This means that the estimate for hitting at 5 degrees Celsius is 150 meters, but hitting at lower temperatures can result in a distance loss of about 54 meters.

Therefore, since the recommended distance is provided in consideration of the effects of temperature, humidity, and altitude when the user measures the distance while hitting in the actual field, the user can select a club that matches the recommended distance and hit according to the club. Since variables according to the type of exercise and environment are also considered, the user can make a more precise blow.

In addition, depending on the environment variable, var2 may be 1 or Wstd may be 0. This is to obtain a correction value using only an addition-multiplication formula as simple as possible, so that a value close to the actual value can be obtained as quickly as possible even without a system capable of fast calculation.

That is, the recommended distance according to the present invention is obtained by adding the distance measured by the physical distance measuring unit 11, the distance corrected by the striking distance correction unit 12, and the distance corrected by the environmental variable correction unit 13. .

In addition, the environmental variable correction unit 13 may further include an external variable module 32 to take into account the influence of the wind, the external variable module is used to consider values not measured by the sensor. Since the direction and strength of the wind can vary with time, even if the wind effect is measured, the wind may not blow at the actual time of impact, so the user should consider it mainly when hitting. However, when a wind whose wind and speed does not change significantly is blowing, the result value in consideration of the strength and direction of the wind through the external variable module 32 may be reflected in the environmental variable correction unit 13 .

In addition, a method using a neural network may be used to obtain actual values using temperature, altitude, humidity and theoretical predictions, but the neural network does not reveal exactly how much each influence value is, and a trained neural network is used to obtain predicted actual values. However, this requires more computation time and requires high system configuration. However, in the present invention, each environmental variable is obtained for each section in order to independently obtain the influence value of the environmental variable obtained from the measured value, and this can be obtained from the multiplication formula, so that it is close to the actual value and can be easily calculated.

11: physical distance measuring unit 12: striking distance compensating unit
13: environmental variable correction unit 14: sensor unit
15: display unit 16: input unit
17: memory 18: control unit
30: Seating angle measurement DB 31: Measurement correction DB
32: external variable module

Claims (6)

A device that provides a recommended distance for hitting a golf ball by correcting the measured distance based on actual data,
A display unit 15 that displays a pin for specifying a target for measuring a distance in an actual field with the actual field as a background and displays data including the distance and angle to the target;
A physical distance measuring unit 11 for measuring the distance from the user's position to the target and the angle between the ground surface and the target, an input unit 16 for the user to input and select a set value into the device, and a sensor unit having a sensor ( 14) including
A device that provides a recommended distance for striking a golf ball by correcting the distance measured based on actual data, which determines the recommended distance that a striker should consider for striking a golf ball by the following equation

Dre is the recommended distance, Dh is the horizontal distance obtained from the measured distance (linear distance), Dv is the vertical distance, σ1 is the horizontal correction value, and σ2 is the vertical direction correction value. According to claim 1,
It further includes an environmental variable correction unit 13. The environmental variable correction unit 13 calculates and stores the effect of environmental variables for each distance section in advance, and calculates and recommends a correction value for each environmental variable using the following equation for each distance section. A device that provides a recommended distance for hitting a golf ball by correcting the measured distance based on actual data, which provides a distance.

Dmod is the distance correction value, Dpred is the actual distance measurement or theoretical value, W is the current environmental variable value, Wstd is the reference environmental variable value, Var1 is the correction variable value obtained from the actual measurement correction DB, and Var2 is the environmental variable and the environmental variable value from the actual measurement correction DB. It is a given variable. Quo is a function that returns only the quotient when the preceding number in parentheses is divided by the following number. According to claim 2, wherein the sensor unit 14, including any one or more of a thermometer, a hygrometer, an altimeter, a gravity sensor, and an acceleration sensor, the recommended distance for hitting the golf ball by correcting the measured distance based on the measured data device provided. The measurement based on actual data according to claim 3, further comprising an external variable module so that an environmental variable value that is not directly sensed by the sensor unit 14 is input and reflected as a correction value in the environment variable correction unit 13 A device that provides a recommended distance for hitting a golf ball by correcting the distance. The apparatus of claim 4, wherein the physical distance measuring unit provides a recommended distance for hitting a golf ball by correcting the distance measured based on actual measurement data, which specifies the distance by measuring the reflected time after the laser is fired on the target. According to any one of claims 1 to 5, further comprising a striking distance correction unit, the striking distance correction unit (12) using the measured distance (A) and angle (B) the horizontal distance (x) and vertical Calculate the directional distance (y) and use the x + y value and any one or more of the golf clubs used as an index to obtain the seating angle (C) stored in the seating angle measurement DB 30 and set the horizontal correction distance z below. A device that provides a recommended distance for hitting a golf ball by correcting the distance measured based on the actual data obtained by the equation.
x=Cos(B)*A, y=sin(B)*A, z=y*tan(C)

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