JP4118118B2 - Plot method of test hit mark, flight distance chart, and golf club selection support device using flight distance chart - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present inventionHow to plot test marks,The present invention relates to a flight distance chart and a golf club selection support device using a flight distance chart. In particular, the relationship between a flight distance of a flying object such as a golf ball and an element that determines the flight distance intuitively and clearly, such as a target golfer This technique is useful for showing the target person and supporting the selection of a golf club or the like.
[0002]
[Prior art]
In general, improvement in the flight distance of a golf ball is of particular interest to golfers, who try to fly a golf ball farther than anyone else.
The golf ball flight distance is generally the golf club head speed or the initial velocity of the golf ball (ball initial velocity), the launch angle (launch angle) that is the initial flight angle of the golf ball, and the backspin that is the initial rotation speed of the golf ball. It is known to determine by three elements of quantity.
[0003]
Therefore, in recent years, golf club manufacturers have come to sell golf clubs by presenting the characteristic characteristics of golf clubs by measuring and evaluating the values of these three elements. This makes it possible for the target golfer to select and purchase an optimal golf club whose characteristic characteristics of the golf club are suitable for the three elements that the golf club knows through trial hits and the like.
[0004]
As a device for selecting this type of golf club, the head speed and hitting data values (ball initial speed, launch angle, backspin amount, side spin amount, etc.) when the target golfer hits a golf ball with a golf club are obtained. If necessary, calculate and acquire the unmeasured value of the hitting ball data value as the ideal hitting ball data value, and calculate the trajectory and flight distance of the golf ball based on these hitting ball data values. In addition, a device is known in which a hit golf data value such as three elements obtained by measurement or calculation is shown and a golf club suitable for a target golf player is selected (see Patent Document 1).
[0005]
[Patent Document 1]
JP 2001-269425 A
[0006]
[Problems to be solved by the invention]
The above-described conventional device described in Patent Document 1 indicates the trajectory of a golf ball, and also indicates numerical values such as three elements obtained by measurement or calculation to select a golf club suitable for the golf swing of the target golfer. I am doing so.
[0007]
However, in the above-described apparatus, a general target golfer can determine the three values of the initial velocity of the golf ball (ball initial velocity), the launch angle (launch angle) of the golf ball, and the back spin amount of the golf ball, and the flight distance of the golf ball. It is not easy to grasp the relationship between the two. In addition, even if a general target golfer is shown the trajectory of a golf ball, it is difficult to grasp the relationship between the three elements and the flight distance by the trajectory of this golf ball. It is difficult for the golfer to grasp which value of the three elements should be increased or decreased.
[0008]
Therefore, the conventional apparatus has a problem that it is difficult to grasp how the flight distance can be efficiently improved from the numerical values of the three elements. Therefore, in the conventional apparatus, an expert such as a golf club sales staff shows the trajectory of the golf ball obtained by calculation, and the golfer can efficiently play golf by increasing or decreasing which of the three elements according to the experience of the expert. I had to explain if the distance of the ball would improve. For this reason, the selection of the optimal golf club is left to the experience of a specialist, and there is a possibility that the object is not objective.
[0009]
  Therefore, the present invention has been made in view of the above, and intuitively and clearly a target person such as a target golfer who has a relationship between a flight distance of a flying object such as a golf ball and an element that determines the flight distance. Can be shown inHow to plot test marks,It is an object of the present invention to provide a golf club selection support device using a flight distance chart and a flight distance chart.
[0010]
[Means for Solving the Problems]
  In order to achieve the above object, the present invention provides:First specific value acquisition means for acquiring a first specific value by measurement, chart creation means for generating a flight distance chart, first test hit mark plotting means for plotting the first test hit mark, and first by measurement A golf club selection support device having a second specific value acquisition means for acquiring a specific value of 2 and a second test mark plotting means for plotting a second test hit mark,A method of plotting test hit marks on a flight distance chart, wherein the flight distance chart has two elements as variables among three elements of an initial velocity, an initial flight angle, and an initial rotation speed of a golf ball that has been launched. A golf ball flight distance represented on a two-dimensional coordinate space in which the remaining elements are constants and the two elements are assigned to two orthogonal axes, and is determined by the values of the variables and the constants Is a chart represented by a plurality of equidistant lines connecting points showing substantially the same value,The first specific value acquisition unit includes:When the golfer tries to hit a golf ball with the first golf club, the initial velocity, initial flight angle, and initial rotation number of the golf ball are obtained by measurement and set as a first specific value;The chart creating means isCreating the flight distance chart using one of the acquired first specific values as the value of the constant;The first test mark mark plotting means includes:A coordinate position in the two-dimensional coordinate space of the created flight distance chart, and defined by a first specific value corresponding to two elements other than the constant element among the three elements Plotting a first test mark at the position;The second specific value acquisition means isWhen the golfer tries to hit a golf ball with a second or later golf club, the initial velocity, initial flight angle and initial rotation number of the golf ball are obtained by measurement and set as a second specific value;The second test hit mark plotting means includes:The coordinate position in the two-dimensional coordinate space of the flight distance chart in which the first test hit mark is plotted, and the coordinates defined by the values corresponding to the two elements as the variables among the second specific values And a step of plotting a second test mark at the position. A method for plotting a test mark is provided.
[0011]
In addition, the present invention provides a flight distance chart on which test hit marks are plotted, which is created by the test hit mark plotting method described above.
[0019]
  Furthermore, the present invention is a golf club selection support device using a flight distance chart,The flying distance chart includes two elements of the three elements of the initial velocity, the initial flying angle, and the initial rotational speed of the golf ball that has been launched, with two elements as variables and the remaining elements as constants. A plurality of equal flight distances connecting points where the flight distances of golf balls expressed on a two-dimensional coordinate space assigned to two orthogonal axes are determined by the values of the variables and constants are substantially the same. It is a chart represented by a line, and when a golfer tries a golf ball with a first golf club, the initial identification value is obtained by measuring the initial velocity, initial flight angle, and initial rotation number of the golf ball. The first valueSpecific value acquisition means;One of the acquired first specific values is set as the value of the constant.Chart creating means for creating the flight distance chart;Created aboveFlight distance chartTwo-dimensional coordinate spaceupperTwo coordinate positions other than the constant element of the three elementselementFirst corresponding toAt the coordinate position defined by the specific value ofFirstPlot test marksFirstTrial mark plotting means,When the golfer tries to hit a golf ball with a second or subsequent golf club, the second specific value is obtained by measuring the initial velocity, initial flight angle, and initial rotational speed of the golf ball as a second specific value. A value acquisition means and a coordinate position in a two-dimensional coordinate space of a flight distance chart in which the first test hit mark is plotted, and values corresponding to two elements as the variables among the second specific values A second trial hit mark plotting means for plotting a second trial hit mark at a coordinate position defined by: and the first and second trial hit marks,A test hit mark display means for displaying the plotted flight distance chart on a display screen or printing on a recording medium,SaidOn the flight distance chartThe first and second plottedFrom the position of the test markSaidProvided is a golf club selection assisting device using a flight distance chart that assists a golfer to select a golf club suitable for the golfer.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings as appropriate. In addition, this invention is not limited by embodiment, The structure substantially the same as the structure of this invention is also included in the scope of the present invention.
[0021]
FIG. 1 is a diagram illustrating Example 1 of a flight distance chart according to an embodiment of the present invention.
This flight distance chart is a chart in which a uniform flight distance line of a golf ball at a predetermined initial velocity (ball initial velocity) of the golf ball is represented in a two-dimensional coordinate space. Here, the “equal flight distance line” is a curve or a continuous straight line indicating an equal flight distance, such as a contour line indicating an equal height such as a mountain or an isobar indicating an equal atmospheric pressure. The horizontal axis represents the initial rotation number of the golf ball (hereinafter abbreviated as “rotation number” as appropriate), and the vertical axis represents the launch angle (launch angle) that is the initial flight angle of the golf ball. Further, the rotation speed of the golf ball represents a backspin amount here. The flight distance represents the total distance including the distance from when the golf ball launched into the air falls to the ground and rolls and stops.
[0022]
In this flight distance chart, the backspin amount (number of rotations) and the launch angle are variables, and the flight distance is expressed as a constant with the backspin amount, launch angle, and ball initial speed as variables.
[0023]
In this flight distance chart, factors such as the lift coefficient and drag coefficient of the golf ball and external conditions such as wind speed, wind direction, temperature, humidity, and air density are treated as constants. The flight distance is calculated by a predetermined analytical expression or a regression equation obtained in advance, and plotted on a two-dimensional coordinate system represented by backspin amount (number of rotations) -launch angle. It is drawn by connecting with.
[0024]
In addition, since the ball initial speed and the head speed have a generally good correlation, if one is measured, the other can be estimated. Therefore, here, a flying distance chart of a predetermined initial ball speed is shown, but a similar flying distance chart is used for a predetermined head speed. The head speed can be measured by the moving speed of the head passing through a certain section immediately before impact. For example, the head speed can be represented by a speed within a section of 100 [mm].
[0025]
Specifically, as a variable element of this flight distance chart, the backspin amount (rotational speed) is set on the horizontal axis in the range of 500 to 5000 [rpm], and the launch angle (launch angle) is in the range of 5 to 25 [deg]. ) In a two-dimensional space indicated by a rectangle with a vertical axis, a chart in which equal flight distance lines are drawn every five yards in the total flight distance. The equal flight distance lines are drawn by solid lines every 10 yards, such as 210, 220, 230, 240, 250, 260 yards, and are drawn by broken lines every 10 yards, such as 225, 235, 245, and 255. In addition, as a constant element, the ball initial speed is 60 [m / s], a predetermined lift coefficient, a predetermined drag coefficient, a wind speed of 0, a temperature of 20 ° C., and the like. For example, when the head speed (H / S) of the target golfer is 40 [m / s], a flying distance chart with a corresponding initial ball speed (B / V) of 60 [m / s] is used. It is considered good.
[0026]
In the flight distance chart of the first embodiment, a diagonal line that descends to the lower right connecting the upper left end and the lower right end in the figure is an equal flight distance line that draws a curved line that is almost the vertical line. There is a tendency to get away.
[0027]
FIG. 2 is a diagram showing Example 2 of the flight distance chart according to the embodiment of the present invention.
Similar to the first embodiment, this flight distance chart is a chart in which the equal flight distance lines of a golf ball at a predetermined initial velocity of the golf club are represented in a two-dimensional coordinate space. While the flight distance represents the total distance in the first embodiment, the second embodiment represents a carry distance that is a distance until the golf ball hit in the air falls on the ground. Therefore, the flight distance calculation formula is different. Since other conditions are the same as those in the first embodiment, description thereof is omitted.
[0028]
Specifically, the variable elements and the constant elements of the flight distance chart are the same as those in the first embodiment, and thus the description thereof is also omitted. However, in the first embodiment, the equal flight distance line is drawn with a solid line every 10 yards in a range of 120 to 230 yards, and a broken line around a range of 125 to 235 every 10 yards.
[0029]
In the flight distance chart of the second embodiment, the pattern of the equal flight distance line is different at about 210 yards. That is, in the figure, up to about 210 to 235 yards is an equal distance line that draws a curved line that is substantially a vertical line with a straight line descending to the right as in the case of the first embodiment. From 120 to about 210 yards, it is an equidistant distance line in which straight lines descending to the right are arranged in parallel.
[0030]
In Example 1 or 2, the flight distance charts are Examples 1 and 2 in which the equal flight distance line is indicated by a solid line and a broken line by a continuous straight line. It may be drawn not as a continuous straight line but as a smooth curve, and so as to distinguish equal flight distances by points and various marks. Furthermore, a region surrounded by equal distance lines (a region surrounded by solid lines or a region surrounded by solid lines and broken lines) may be classified by color coding, hatching, or the like.
[0031]
In the first or second embodiment, the flight distance chart has been described using the rotation speed as the back spin amount, but may be a side spin amount or a top spin amount. This flight distance chart uses a ball initial speed as a constant and other factors such as backspin amount and launch angle as variables, and sets the flight distance on a two-dimensional coordinate system represented by the backspin amount and launch angle. As shown, the constant and variable elements can be any of the three elements of head speed or ball initial speed, rotation speed and launch angle. The elements of are not limited.
[0032]
In the first or second embodiment, the flight distance chart coordinate system has been described as a two-dimensional coordinate system. However, the present invention is not limited to this. A three-dimensional coordinate system may be used in which a flight distance axis representing a flight distance is defined by height in a direction substantially orthogonal to the coordinate system, and a flight distance space is expressed by inclining between different flight distances. This three-dimensional coordinate system may be expressed in a two-dimensional space on a paper medium or a display screen, or may be expressed in a three-dimensional space by a three-dimensional model. Moreover, how to take a coordinate axis may be represented not only with a real number straight line but with a logarithmic straight line, for example. The three-dimensional coordinate system is not only manufactured as a model, but may be displayed on a display screen or a paper medium using a drawing method. Further, in a liquid crystal display capable of 3D display, when a flight distance chart is represented in a three-dimensional coordinate system, the flight distance chart can be shown to the target golfer more intuitively and clearly.
[0033]
Next, a reading example of the flight distance chart of the first and second embodiments and an advice example using the flight distance chart will be described.
FIG. 3 is a diagram for explaining an example of a flight distance advice using the flight distance chart of the first embodiment shown in FIG. Point A shown in FIG.₁The general target golfer a₁Is a test hit mark plotted by measuring and plotting a backspin amount of about 2700 [rpm] and a launch angle of about 6 [deg]. This test mark point A₁When the flying distance is about 226 yards, the flying distance tends to be increased efficiently by increasing the backspin amount and launch angle (by moving in the direction of the arrow up to about 240 yards). Thus, in order to go in the direction shown by the arrow, it is understood that the backspin amount is increased from about 2700 [rpm] to 3000 [rpm] and the launch angle is increased from about 6 [deg] to about 14 [deg]. . Here, the arrows are drawn so as to face the dense direction of the equal flight distance line and the direction in which the flight distance extends. The target golfer can easily increase the flight distance by changing the backspin amount and the launch angle so that the gradient of the equal flight distance line is directed in a dense direction. In the following description, it is assumed that the arrows are drawn so as to face the direction in which the gradient of the equal flight distance line is dense and the flight distance extends.
[0034]
Further, in order to extend the flight distance in the direction of about 250 yards, for example, the backspin amount (rotation speed) is reduced from about 2700 [rpm] to about 1800 [rpm], and the launch angle is about 6 [deg]. It can be seen that it should be increased to about 17 [deg]. However, it is physically and technically difficult for a general target golfer to hit a golf ball so that the backspin amount is reduced by about 900 [rpm] and the launch angle is increased by about 11 [deg].
[0035]
Therefore, general target golfer a₁As mentioned above, increasing the flight distance to about 240 yards is easy to deal with with little change in backspin amount and launch angle. The advice is to increase the spin rate by about 300 [rpm] and increase the launch angle by about 8 [deg]. In this case, since the amount of backspin is increased, it is possible to intuitively and clearly solve the misunderstanding that reducing the amount of backspin, which is generally accepted, will fly. It is also possible to prevent advice based on such misunderstandings.
[0036]
Similarly, point A shown in FIG.₂The general target golfer a₂Is a test hit mark plotted by measuring about 3900 [rpm] and about 18 [deg] after performing a test hit. This test mark point A₂When the flight distance is 235 yards, the flight distance tends to be increased in the direction of the arrow up to about 250 yards. Thus, in order to go in the direction shown by the arrow, it is understood that the backspin amount should be reduced to about 3900 [rpm] to 2000 [rpm] without changing the launch angle much.
[0037]
Therefore, an expert such as an advisor advises to reduce the backspin amount by about 1900 [rpm] while showing a flight distance chart.
[0038]
FIG. 4 is a diagram for explaining an example of the flight distance advice using the flight distance chart of the first embodiment shown in FIG. Point B shown in FIG.₁The general target golfer b₁Is a test hit mark plotted by measuring about 2300 [rpm] and about 10 [deg] after performing a test hit. This test hit mark point B₁When the flight distance is about 200 yards, the flight distance tends to be increased in the direction of the arrow up to about 225 yards. Thus, in order to go in the direction shown by the arrow, it is understood that the backspin amount is increased from about 2300 [rpm] to 3000 [rpm] and the launch angle is increased from about 10 [deg] to about 17 [deg]. .
[0039]
Further, in order to extend the flight distance in the direction of about 230 yards, for example, the backspin amount (number of rotations) is reduced from about 2300 [rpm] to about 1000 [rpm], and the launch angle is about 10 [deg]. It can be seen that it should be increased to about 20 [deg]. However, in the same manner as in the first embodiment, hitting a golf ball so that the backspin amount is reduced by about 1300 [rpm] and the launch angle is increased by about 10 [deg] is a physical strength for a general target golfer. And technically difficult.
[0040]
Therefore, general target golfer b₁As mentioned above, increasing the flight distance to about 225 yards is easy to deal with with little change in backspin amount and launch angle. It is advised to increase the spin rate by about 700 [rpm] and increase the launch angle by about 7 [deg]. In this case, as in the case of the first embodiment, since the backspin amount is increased, it is possible to intuitively and clearly solve the misunderstanding that reducing the backspin amount, which is generally accepted, will fly. It becomes. It is also possible to prevent advice based on such misunderstandings.
[0041]
Similarly, point B shown in FIG.₂The general target golfer b₂Is a test hit mark plotted by measuring about 4200 [rpm] and about 15 [deg] after performing a test hit. This test hit mark point B₂When the flight distance is 221 yards, the flight distance tends to be about 230 yards in the direction of the arrow. Thus, in order to go in the direction shown by the arrow, it is understood that the launch angle should be increased by about 5 [deg] and the backspin amount should be reduced to about 1000 [rpm].
Therefore, an expert such as an advisor advises to increase the launch angle by about 5 [deg] and reduce the backspin amount to about 1000 [rpm] while showing the flight distance chart.
[0042]
Similarly, point B shown in FIG._ThreeThe general target golfer b_ThreeIs a test hit mark plotted by measuring about 4500 [rpm] and about 22 [deg] after performing the test hit. This test hit mark point B_ThreeWhen the flight distance is about 216 yards, the flight distance tends to be about 228 yards in the direction of the arrow. Thus, in order to go in the direction indicated by the arrow, it is understood that the launch angle should be reduced by about 3 [deg] and the backspin amount should be reduced by about 1500 [rpm].
Therefore, an expert such as an advisor advises to reduce the launch angle by about 3 [deg] and reduce the backspin amount by about 1500 [rpm] while showing the flight distance chart.
[0043]
As described above, by knowing the increase / decrease direction of the variable to be adjusted, it is possible to easily present a golf club that realizes such increase / decrease of the variable. For example, to reduce the backspin amount, for example, a golf club having a golf club head with a low center of gravity is presented.
[0044]
As described above, the flight distance charts shown in Examples 1 and 2 do not need to calculate the flight distance at the time of test hit, and if the test hit mark is plotted at coordinates determined by the backspin amount and the launch angle, The distance will be shown intuitively and clearly.
[0045]
Next, an example of reading the flight distance charts of Examples 1 and 2 and an example of golf club selection advice using the flight distance chart will be described.
FIG. 5 is a view for explaining an example of golf club selection support using the flight distance chart of the first embodiment shown in FIG. Point C shown in FIG.₁, C₂, C_Three, C_FourMeasures the backspin amount, launch angle, and ball initial speed when a general golfer c makes a test shot with four golf clubs, and the backspin amount and the launch on the flight distance chart of the corresponding ball initial speed This is a test hit mark that plots corners and expresses flight distance. Trial mark point C₁Then about 237 yards, test hit mark point C₂Then about 236 yards, trial hit mark point C_ThreeThen about 241 yards, test hit mark point C_FourThe distance is about 241 yards. Here, test strike mark C₁As a result of a test hit with a golf club owned by the target golfer c, and a test hit mark C₂, C_Three, C_FourIs a result of trial hitting with a golf club as a candidate for purchase. The flight distance in this is the test hit mark C_Three, C_FourIt is. However, the test mark C_FourThis golf club is a special golf club with a high launch angle of about 22 [deg] and a backspin amount exceeding 3000 [deg]._ThreeCan be said to be a suitable golf club.
For this reason, sales staff and other professionals must make a trial hit mark C against the target golfer c._ThreeWould recommend buying a club. However, depending on the preference of the target golfer c, the test hit mark C₂The golf club may be selected.
[0046]
FIG. 6 is a view for explaining an example of golf club selection support using the flight distance chart of the embodiment 2 shown in FIG. Point D shown in FIG.₁, D₂, D_Three, D_FourMeasures the backspin amount, launch angle, and ball initial velocity when a general golfer d makes a test shot with four golf clubs, and the backspin amount and the launch on the flight distance chart of the corresponding ball initial velocity It is a test hit mark that plots corners and expresses flight distance. Trial mark point D₁Then about 191 yards, test mark point D₂Then, about 209 yards flight distance, test hit mark point D_ThreeThen, about 201 yards, test mark point D_FourThe distance is about 211 yards. Here, the test mark D₁As a result of a test hit with a golf club owned by the target golfer d, and a test hit mark D₂, D_Three, D_FourIs a result of trial hitting with a golf club as a candidate for purchase. The flight distance in this is the test hit mark D with a flight distance of about 211 yards_FourIt is. However, the test mark D_FourIs a special golf club with a backspin amount exceeding 3000 [deg].₂It can be said that this golf club is a suitable golf club.
For this reason, sales staff and other professionals can make a test mark D against the target golfer d.₂Would recommend buying a club. However, depending on the preference of the target golfer d, the test hit mark D_ThreeThe golf club may be selected.
[0047]
Next, a golf club selection support method and apparatus for displaying the flight distance chart of the embodiment of the present invention and supporting the selection of the golf club of the target golfer will be described.
FIG. 7 is a diagram illustrating a schematic configuration of an example of the golf club support apparatus according to the embodiment of the present invention.
This golf club selection support device 1 is a flight distance chart in which both test hit marks are plotted so that the flight distance of a golf club owned by the golf club can be compared with the flight distance of a golf club that is a purchase candidate intuitively and clearly. A device that displays and assists the golfer in selecting a golf club.
Therefore, the golf club selection assisting apparatus 1 controls the initial ballistic characteristic measuring apparatus 10 that measures the initial ballistic characteristic when the target golfer 5 tries the golf ball 6 with the golf club 7 and the initial ballistic characteristic measuring apparatus 10. And a computer 30 that mainly controls the control device 20 and controls the control device 20 as well as creating and displaying a flight distance chart by taking in the initial ballistic property measured by the initial ballistic property measuring device 10. The Note that the initial trajectory characteristic measuring apparatus 10 can measure the initial trajectory by, for example, a technique described in JP-A-2002-20237. Hereinafter, an outline of a configuration and a method for measuring an initial trajectory by the technique described in the publication will be described.
[0048]
Here, the initial ballistic characteristics are the three elements of the initial velocity (ball initial velocity) of the golf ball 6, the launch angle (launch angle) of the golf ball 6, and the back spin amount or side spin amount of the golf ball 6. Of these three elements, two elements are variables, and the remaining elements are constants. These three elements are specific values obtained by trial hits. Further, the flight distance indicated by the flight distance chart represents the carry distance of the golf ball 6 or the total flight distance. In the flight distance chart, it may be set as appropriate as to which flight distance is displayed. In the following explanation, the flight distance refers to the total flight distance.
[0049]
The initial trajectory characteristic measuring apparatus 10 includes a frame 11 placed on the ground, a tee 12 for teeing up a golf ball 6 mounted on the frame 11, a long-time light emitting strobe and an electronic shutter, and a predetermined time from the time of launch. The golf ball 6 is photographed from the vertically upward direction for a predetermined time (for example, about 1 second) from the time of launching by the CCD camera 13 for photographing the golf ball 6 from the horizontal direction, and the long-time light emitting strobe and the electronic shutter. A CCD camera 14, a frame 15 for mounting the CCD camera 14 downward, a frame 16 that is supported on the frame 11 and cantilever the frame 15 and horizontally mounts the CCD camera 13, and a golf ball 6 teeed up by a tee 12 And impact golf club head 7a swung The light projecting portion 17 disposed on the frame 11 so that the light beam strikes the golf club head 7a immediately before the light beam, and the light beam is blocked by the golf club head 7a disposed on the frame 16 so as to face the light projecting portion 17. A light receiving unit 18 that receives the light beam projected from the light projecting unit 16a when the light beam is not received and outputs a trigger signal when the light beam is interrupted to cause the control device 20 to start photographing with the CCD cameras 13 and 14, It is a device that is mainly assembled. Note that images captured by the CCD cameras 13 and 14 are automatically captured by the computer 30 and subjected to image processing such as binarization. Further, the CCD camera 13 incorporates a head speed measurement sensor (not shown) that measures the speed immediately before the impact of the golf club head 7a. The frames 11, 15, and 16 are attached so as to be integrated with bolts or the like. The head speed measurement sensor may be built in the CCD camera 14 or may be attached to the frames 11, 15, and 16 separately.
[0050]
The computer 30 includes a CPU 31 that executes a golf club selection support program, a hard disk (HD) 32 that stores, in particular, a golf club selection support program and creation data necessary to create a flight distance chart, and various data, particularly flight data. It mainly has a monitor 33 for displaying a distance chart, an I / F 34 for connection to the initial ballistic characteristic measuring device 10 side, a keyboard 35 operated by an operator, and a printer 36 for printing a flight distance chart in particular. Yes.
[0051]
The golf club selection support program executed by the CPU 31 includes an initial ballistic characteristic measurement module that measures initial ballistic characteristics and calculates various data by the initial ballistic characteristic measurement apparatus 10, and an initial ballistic that is measured or calculated by trial hitting of the target golfer 5. A flight distance chart creation module that creates a flight distance chart according to characteristics, and a test shot mark plotting module that plots a test shot mark of an initial ballistic characteristic measured or calculated by a test shot of the target golfer 5 on the flight distance chart. It is out. The HD 32 also stores creation data for creating a flight distance chart as data of the flight distance chart creation module.
[0052]
Next, the golf club selection support process will be described with reference to a flowchart.
FIG. 8 is a flowchart illustrating the golf club selection support process according to the embodiment of the present invention. Here, it is assumed that the golf club 7 that the target golfer 5 makes a test shot is owned by the target golfer 5 and is a candidate for purchase.
First, the target golfer 5 grasps the grip 7b of the golf club 7 owned by himself and makes a test shot while standing in front of the initial ballistic characteristic measuring device 10, so that the initial ballistic characteristic measuring device 10 measures the initial ballistic characteristic at that time. (Step 200). At this time, in the initial ballistic characteristic measurement device 10, the control device 20 detects that the light beam projected from the light projecting unit 17 and input to the light receiving unit 18 is blocked when the golf club head 7a passes. Then, continuous shooting of the CCD cameras 13 and 14 is started. At the same time, a head speed measuring sensor (not shown) built in the CCD camera 13 may measure the head speed. Then, the CPU 31 executes the initial ballistic characteristic measurement module, analyzes the image, and obtains the launch angle that is the initial flight angle and the back spin amount (or the side spin amount) that is the initial rotation speed. Here, the launch angle, the backspin amount, and the initial ball velocity are used as initial ballistic characteristic data. The initial ball speed is calculated from the moving distance within a unit time by analyzing the image of the golf ball 6. Further, the initial velocity of the golf ball may be calculated from the moving distance within the unit time by analyzing the image of the golf ball 6.
[0053]
Subsequently, the CPU 31 executes a flight distance chart creation module, extracts flight distance chart creation data corresponding to the initial ball speed from the HD 32 (step 202), and creates a flight distance chart as shown in FIG. (Step 204). Thereafter, the CPU 31 executes a test hit mark plotting module to plot the test hit marks on the coordinates based on the backspin amount and the launch angle obtained by the test hit (step 206), and in FIG. 5 or 6 (FIG. 3 or 4). The shown flight distance chart is displayed on the monitor 33 (step 208).
[0054]
Then, the target golfer 5 makes a trial hit with the golf club 7 as a purchase candidate. Then, in this case as well, the initial ballistic characteristic measuring apparatus 10 measures the initial ballistic characteristic which is the value of the launch angle, the backspin amount, and the ball initial velocity (step 200). Next, the CPU 31 skips steps 202 and 203 because there is already a flight distance chart in which the test hit mark in the golf club owned by the target golfer 5 is plotted, executes the test hit mark plot module, and acquires the purchase candidate acquired this time. The test hit mark is plotted on the coordinates based on the backspin amount and the launch angle obtained by the test hit with the golf club 7 (step 206), and the flight distance chart shown in FIG. 5 or 6 (FIG. 3 or 4) is displayed on the monitor 33. (Step 208). In this way, the golf club 5 that is a purchase candidate is processed, and the trial hit mark of the golf club 7 owned by the target golfer 5 and the trial hit mark by the golf club 7 are plotted by the number of purchase candidates. Each test hit mark has a different shape or color, or a character is added to each test hit mark. The flight distance chart in which the test hit marks of all the golf clubs 7 as purchase candidates are plotted is not only displayed on the monitor 33 but also printed by the printer 35 and distributed to the target golfer 5.
As described above with reference to FIGS. 5 and 6, the golf club's trial hit mark possessed by the target golfer 5 and the purchase candidate's trial hit mark are displayed on the flight distance chart. The member can select a golf club having a flight distance suitable for the target golfer 5. The flight distance may be calculated from the head speed value, which is a constant element, and the backspin amount and launch angle, which are two element values, which are variables.
[0055]
Therefore, according to the present embodiment, the golfer's backspin amount and launch are determined by trial hitting using a flight distance chart that represents an equidistant line on the two-dimensional coordinates represented by the backspin amount and launch angle according to the initial velocity of the ball. By measuring the angle, the golfer's flight distance characteristics can be easily and intuitively known. Further, if the values of the backspin amount and the launch angle are known, the flight distance can be found by plotting on the flight distance chart, so that it is not necessary to calculate the flight distance for each trial hit as in the prior art.
[0056]
In the golf club selection support process described above, in the case of the flight distance chart described with reference to FIG. 6 or 7, that is, the golf club owned by the target golfer is first tried and compared with the golf club owned by the golf club. A case has been described in which a golf club with a long distance is selected using a flight distance chart. However, when the target golfer does not own the golf club, it can be selected as follows. Examples of golfers who do not have a golf club include golfers and beginners who have damaged or lost their golf club.
[0057]
For example, a golf club X having different characteristics of six backspin amounts recommended by the manufacturer₀~ X_FiveThere is a backspin amount of X regardless of which golfer hits₀<X₁<X₂<X_Three<X_Four<X_FiveSuppose that they are designed to be
[0058]
At this time, the maker determines the standard golf club X_ThreeAs the most recommended one, the target golfer c is made a test shot. Then, in the flight distance chart, for example, a test hit mark C₂Is plotted as follows. In this case, the test hit mark C on the flight distance chart₂From this point, it can be seen that the flight distance increases further in the upper left direction in the figure. That is, if the golf club can reduce the backspin amount (number of rotations) and increase the launch angle (launch angle), the flight distance is further increased.
[0059]
Therefore, the manufacturer is Golf Club X₂Golf club X that can reduce the backspin amount than₀To X₂To the target golf player c. As a result, on the flight distance chart, the golf club X₂Then test mark C_Four, Golf Club X₁Then test mark C_Three, Golf Club X₀Then test mark C₁Is plotted as follows. In this case, as described in FIG._ThreeIs most preferred. Therefore, the manufacturer is the test mark C_ThreeGolf club X₁The target golfer can be selected while showing the flight distance chart to the target golfer. That is, golf club X_Four, X_FiveIs efficient because a golf club can be selected without trial.
[0060]
In the above, the case of a golf club with a known backspin relationship has been described. However, even when the launch angle relationship is known or both are known, a golf club is efficiently selected by the target golfer by the same procedure. Can be made. In addition, if there is one golf club that will be further away from the reference golf club, an appropriate golf club can be selected by two trial hits.
[0061]
Further, the same procedure can be applied to a golf club owned by the target golfer. However, in this case, it is necessary to know the relationship of characteristics such as the backspin amount between the golf club owned by the target golfer and the golf club recommended by the manufacturer.
[0062]
In the above-described embodiment, the method for supporting the selection of the golf club based on the golf club owned by the target golfer has been described. However, the golf club is allowed to make a trial hit on the target golfer based on the golf club determined in advance by the manufacturer. May be selected.
[0063]
【The invention's effect】
As described above, according to the present invention, two elements are used as variables in the initial velocity of the flying object, the initial flying angle of the flying object, and the initial rotational speed of the flying object, and the remaining elements are used as constants. Since the flight distance is displayed in the flight distance chart, the relationship between the flying object's initial speed, the initial flying angle of the flying object, and the initial rotational speed of the flying object and the flying distance of the flying object is intuitive. And there is an effect that can be clearly understood.
[0064]
  Therefore, according to the present invention, the relationship between the flight distance of a flying object such as a golf ball and the elements that determine the flight distance can be intuitively and clearly shown to a target person such as a target golfer.How to plot test marks,A golf club selection support apparatus using a flight distance chart and a flight distance chart can be provided. Therefore, the target golfer can easily grasp how to improve the flight distance efficiently.
[Brief description of the drawings]
FIG. 1 is a diagram showing Example 1 of a flight distance chart according to an embodiment of the present invention.
FIG. 2 is a diagram showing Example 2 of a flight distance chart according to the embodiment of the present invention.
FIG. 3 is a diagram for explaining an example of a flight distance advice using the flight distance chart of the first embodiment shown in FIG. 1;
4 is a diagram for explaining an example of a flight distance advice using the flight distance chart of the second embodiment shown in FIG. 2; FIG.
FIG. 5 is a diagram for explaining an example of golf club selection support using the flight distance chart of the first embodiment shown in FIG. 1;
6 is a diagram for explaining an example of golf club selection support using the flight distance chart of the embodiment 2 shown in FIG. 2. FIG.
FIG. 7 is a diagram illustrating a schematic configuration of an example of a golf club support apparatus according to an embodiment of the present invention.
FIG. 8 is an explanatory diagram of golf club selection support processing according to the embodiment of the present invention.
[Explanation of symbols]
1 Golf club selection support device
5 Golfer
6 Golf ball
7 Golf club
7a golf club head
7b grip
10 Initial ballistic characteristic measurement device
11 frames
12 tea
13 Camera
14 Camera
15 frames
16 frames
17 Projector
18 Light receiver
20 Control device
30 computers
31 CPU
32 HD
33 Monitor
34 I / F
35 keyboard
36 Printer

Claims (3)

First specific value acquisition means for acquiring a first specific value by measurement, chart creation means for generating a flight distance chart, first test hit mark plotting means for plotting the first test hit mark, and first by measurement To a flight distance chart using a golf club selection support device having second specific value acquisition means for acquiring a specific value of 2 and second test hit mark plotting means for plotting a second test hit mark , A test mark plotting method,
The flying distance chart includes two elements of the three elements of the initial velocity, the initial flying angle, and the initial rotational speed of the golf ball that has been launched, with two elements as variables and the remaining elements as constants. A plurality of equal flight distances connecting points where the flight distances of golf balls expressed on a two-dimensional coordinate space assigned to two orthogonal axes are determined by the values of the variables and constants are substantially the same. A chart represented by a line,
The first specific value acquisition means acquires the initial velocity, initial flight angle, and initial rotational speed of the golf ball by measuring when the golfer tries to hit the golf ball with the first golf club. A step with a specific value;
The chart creating means creating the flight distance chart using one of the acquired first specific values as the value of the constant;
The first trial hit mark plotting means is a coordinate position in the two-dimensional coordinate space of the created flight distance chart, and corresponds to two elements other than the constant element among the three elements. Plotting the first test hit mark at the coordinate position defined by the first specific value;
The second specific value acquisition means acquires the initial velocity, initial flight angle, and initial rotational speed of the golf ball by measuring the golf ball when the golfer makes a trial hit with a second or subsequent golf club. A specific value of 2;
The second trial hit mark plotting means is a coordinate position in a two-dimensional coordinate space of a flight distance chart on which the first trial hit mark is plotted, and two of the second specific values as the variable Plotting a second test hit mark at a coordinate position defined by a value corresponding to the element.   A flight distance chart on which trial hit marks are plotted, which is created by the trial hit mark plotting method according to claim 1. A golf club selection support device using a flight distance chart,
The flying distance chart includes two elements of the three elements of the initial velocity, the initial flying angle, and the initial rotational speed of the golf ball that has been launched, with two elements as variables and the remaining elements as constants. A plurality of equal flight distances connecting points where the flight distances of golf balls expressed on a two-dimensional coordinate space assigned to two orthogonal axes are determined by the values of the variables and constants are substantially the same. A chart represented by a line,
When a golfer tries to hit a golf ball with the first golf club, the first specific value is acquired as a first specific value by acquiring the initial velocity, initial flight angle, and initial rotation number of the golf ball by measurement. Means,
A chart creating means for creating the flight distance chart using one of the acquired first specific values as the value of the constant;
A coordinate position in the two-dimensional coordinate space of the created flight distance chart, and defined by a first specific value corresponding to two elements other than the constant element among the three elements First test mark plotting means for plotting the first test mark at the position;
When the golfer tries to hit a golf ball with a second or subsequent golf club, the second specific value is obtained by measuring the initial velocity, initial flight angle, and initial rotational speed of the golf ball as a second specific value. A value acquisition means;
The coordinate position in the two-dimensional coordinate space of the flight distance chart in which the first test hit mark is plotted, and the coordinates defined by the values corresponding to the two elements as the variables among the second specific values Second test mark plotting means for plotting the second test mark at the position;
Test hit mark display means for performing display on a display screen of a flight distance chart in which the first and second test hit marks are plotted or printing on a recording medium;
A golf club selection support device using a flight distance chart, which assists the golfer to select a golf club suitable for the golf player from the positions of the first and second test hit marks plotted on the flight distance chart .

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