JPH04309385A - Golf training machine - Google Patents

Abstract

PURPOSE:To constitute the training machines so that training can be executed effectively by discriminating top and impact positions by storage information in the course of a hitting action by a discriminating means, and displaying the storage information in the course of back, down and follow swings in a state that they can be discriminated by an output means. CONSTITUTION:When it is discriminated that a ball is installed on a placing implement by detecting information of a ball detecting means 21, a load of a person to be tested and the load center are calculated from four pieces of load cells W1-W4 and time series data is stored. Also, detecting information of a club detecting means 22 and a ball detecting means 21 is sampled and stored by synchronizing with sampling data of the load and the load center. The calculated load center is displayed as a point on a display device. A ball hitting action starting time point, a top position time point and an impact position time point are discriminated by a discriminating means, and storage information in the course of ball hitting action is divided into three blocks and outputted to the display device 4. The storage information of the output divided into three blocks is displayed on the display device 4 in a state that it can be discriminated as storage information in the course of back swing, in the course of down swing, and in the course of follow swing.

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] The present invention provides a swing base on which a subject holding a club and a ball-striking action is placed, and is equipped with a load detection sensor, and a load applied to the swing base based on the detection information of the load detection sensor. Alternatively, there is a measuring means for measuring the center of load, a storing means for sampling the measurement information of the measuring means at fixed time intervals and storing the data sequentially, and among the stored information of the storing means, from the start of the backswing to the follow swing. The present invention relates to a golf practice machine that is provided with a discriminating means for discriminating stored information during a predetermined ball hitting operation until the end, and an output means for outputting discriminating information of the discriminating means.

0002

2. Description of the Related Art Such golf practice machines are used for practicing golf ball hitting motions. In other words, in ball-hitting practice, it is important to check whether the center of load is moving correctly as the ball hits from the start of the backswing to the end of the follow swing, or whether the load changes correctly during the ball-striking action. It is well known that this is an important indicator for shaping the correct batting action. Therefore, when the subject makes a ball hitting motion on the swing table, the load or load center applied to the swing table is measured, and the sampled data is sequentially stored in a storage device, and after the ball hitting movement is completed, the stored information is By displaying this, it is possible to diagnose the quality of the batting action. By the way, the ball-hitting motion is performed in a series of continuous motions, including a backswing, a downswing, and a follow-swing. Conventionally, when displaying the stored information during the ball-striking motion, the backswing is performed as a series of consecutive actions. , the memory information during the downswing, and the memory information during the follow swing were each displayed in an indistinguishable manner. For example, for displays and plotter display devices,
The information stored during the ball hitting motion was displayed as a two-dimensional trajectory of the load and the center of the load, and the entire distance from the start point of the backswing to the end point of the follow swing was displayed on the same line.

0003

[Problems to be Solved by the Invention] Therefore, in the conventional golf practice machine described above, a test subject can determine which part of the backswing, downswing, and follow-swing in the ball-striking motion based on the display result of the stored information during the ball-striking motion. The problem was that it was not possible to clearly diagnose whether something was wrong. For example, even if a two-dimensional locus of the load and the center of the load is displayed on a display or plotter, and the entire pattern is displayed on the same line, the subject will be able to see the entire pattern from the start of the backswing to the end of the follow swing. Although it is possible to diagnose this by comparing it to a model pattern, it has not been possible to clearly diagnose which part of the backswing, downswing, or follow swing is at fault. Therefore, when practicing ball-hitting motions using the conventional golf practice machine described above,
He was unable to practice effectively to improve his poor ball-striking movements, and had not yet achieved sufficient training effects. The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to store information stored during the ball batting motion into information stored during the backswing, stored information stored during the downswing, and stored information stored during the follow swing. To provide a golf practice machine that can clearly diagnose bad points in a ball-hitting motion by displaying the golf ball in a discernible state, and allows effective practice.

0004

[Means for Solving the Problems] A first characteristic configuration of the golf practice machine according to the present invention is that the discrimination means corresponds to each of the top position and the impact position among the stored information during the predetermined ball hitting operation. configured to determine the portion;
The output means is configured to display each of the stored information during the backswing, the stored information during the downswing, and the stored information during the follow swing in a distinguishable state based on the discrimination information of the discrimination means. At the point.

[0005] The second characteristic configuration specifies a preferred specific configuration for implementing the first characteristic configuration, and details thereof are as follows. That is, the second characteristic configuration is that the output means displays the stored information during the predetermined ball batting motion as a two-dimensional trajectory, and the stored information during the backswing, the stored information during the downswing, and The main feature is that the memory information during the follow swing is displayed in a state where adjacent pieces of information are displayed in different colors.

[0006]

[Operation] According to the first characteristic configuration, the determining means determines the portions corresponding to the top position and the impact position, among the stored information during the ball batting operation from the start of the backswing to the end of the follow swing. Based on the discrimination information of the discrimination means, the output means outputs the stored information during the batting motion, the stored information during the backswing from the start of the backswing to the top position, and the stored information during the downswing from the top position to the impact position. The stored information from the impact position to the end of the follow swing is displayed in a state that can be identified as the stored information during the follow swing.

According to the second characteristic configuration, the output means displays the stored information during the ball batting motion as a two-dimensional trajectory, and displays the stored information during the backswing, the stored information during the downswing, and the follow-up. Each piece of memory information during a swing is displayed in a state where adjacent pieces of information are displayed in different colors.

[0008]

[Effects of the Invention] According to the first characteristic configuration, the test subject can identify each of the backswing, downswing, and follow swing and clearly diagnose his or her weak points, and can practice more effectively. can do. Second
According to the characteristic configuration, the memory information during the ball batting motion is displayed in an easy-to-understand manner as a two-dimensional trajectory, and the memory information during the backswing, downswing, and follow-swing can be easily understood by color-coding. Since the information is displayed, it becomes possible to diagnose the problem in oneself even better.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the golf practice machine of the present invention will be described below with reference to the drawings. In Figures 1, 2 and 3, 1
is a load measuring device, 2 is a tea stand, 3 is a processing device, 4
is a display device as an output means. The golf swing training machine of this embodiment processes the measurement data of the load measuring device 1 during the ball hitting operation in the processing device 3, temporarily stores it as load or load-centered time series data, and displays it after the ball hitting operation is completed. Each device will be explained below.

The load measuring device 1 is provided with a swing base 11 supported at four corners by four load detection sensors 12, 13, 14, 15 such as load cells. The subject holding C performs a ball-hitting motion. At this time, the load applied to the swing base 11 is 4
Load cells 12, 13, 14, and 15 share the load, and the load and load center are determined from these outputs as described later. Further, a mounting tool 25 for mounting a ball 24 is attached to the tee stand 2. Ball detection means 21 for detecting the presence or absence of the ball 24 is provided on the other side of the club head path at the position where the ball 24 is set, and the ball detection means 21 is provided at the club head passing position on the backswing side in the same manner as above. A club detection means 22 is provided for detecting sideward movement. The ball detection means 21 and the club detection means 22 are both reflective detection means. The control box 26 has drive circuits for the ball detection means 21 and the club detection means 22 built therein.

Next, the process of determining the load and the center of load will be explained. The subject holding the club C stands approximately in the center of the swing table 11 on the load measuring device 1 and takes a stance. Load cells 12 and 13 at the four corners of load measuring device 1
, 14, and 15, the table loads have been canceled in advance by zero adjustment in the load converter 16, so the total WT of the outputs W1, W2, W3, and W4 is placed on the swing table 11. Becomes the subject's load. That is, WT=
W1+W2+W3+W4 Furthermore, at this time, the shared output of each load cell differs depending on the relationship between the position where the load is applied and the installation position of the four load cells 12 to 15, so the load center (X, Y) can be determined from these outputs. That is, when the four load cells 12 to 15 are placed exactly at the four corners of a square, the left-right component X and the front-back component Y of the load center expressed with the load cell 12 in FIG. 1 as the origin are:
It can be determined from X=(W2+W3)/WT Y=(W3+W4)/WT. In addition, load cells 12, 13,
Even if 14 and 15 are not located at the four corners of a square, the center of load can be determined by making corrections specific to the geometrical arrangement of the load cells. Furthermore, if three or more load cells are provided, the center of the load applied to the swing base 11 can be determined.

As shown in FIG. 3, four load cells 12 to
Each of the outputs W1 to W4 of 15 is a load converter 16 equipped with a measurement bridge circuit and an A/D converter.After compensating the weight of the swing base 11 as described above, the outputs W1 to W4 of 15 are sampled at regular intervals and converted into digital quantities. do. Then, the data is sequentially imported into the processing device 3 via the I/O interface 32. The subject's load WT and load center (X, Y) are determined by the arithmetic processing means 31 in the processing device 3 according to the above-mentioned formula. Then, the obtained load and load center time series data are temporarily stored in the storage device 33 as a storage means. Therefore, the four load cells 12 to 15, the load converter 16, the I/O interface 32, and the arithmetic processing means 31 function as a measuring means S for measuring the load applied to the platform 11 or the center of the load.

After the ball hitting operation is completed, the data stored in the storage device 33 is processed by the arithmetic processing means 3 which functions as the determining means O.
1 and the display device 4 via the I/O interface 32.
The test subject can view the load during the ball hitting action and the locus of changes in the center of load over time. The display device 4 includes a graphic display device 41 that displays the change over time of the load center (X, Y) as a two-dimensional trajectory, and a display device 41 that displays the change over time of the load WT as a two-dimensional trajectory.
It consists of a plotter 42 that outputs a dimensional locus. However, conversely, it is also possible to output the trajectory of the change over time of the load center (X, Y) to the plotter 42 or to display the trajectory of the change over time of the load WT on the graphic display device 41. In either case, the load and load center time series data stored in the storage device 33 are interpolated and displayed as a continuous curve. As described above, the locus of the load and load center change over time during the ball-striking motion is displayed to determine whether the ball-striking motion is good or bad.

When the subject continuously performs ball-hitting motions, when the determining means O determines from the state where there is no ball 24 to the state where there is a ball 24 based on the detection information of the ball detecting means 21, the memory device 33 The stored data and the display on the display device 4 are cleared.

Next, a method for storing time series data of the load WT and the load center (X, Y) in the storage device 33 will be explained. As shown in FIG. 4, the storage device 33 is divided into nine independent storage sections, each of which stores the load WT before the point of impact, the X component of the load center, and the Y component of the load center, respectively. Three storage units 33A, 33B, 3
3C, three storage units 33D, 33E, and 33F that store the load WT after the time equivalent to impact, the X component of the load center, and the Y component of the load center, respectively, and the detection information of the club detection means 22 before the time equivalent to impact. and two storage sections 33G and 33H that sample and store the detection information of the ball detection means 21 in synchronization with the above-mentioned load and load center sampling data, and further calculate from the data of the X component and Y component of the load center. The storage section 33I calculates the tangential velocity of the locus of the load center by the processing means 31, samples and stores the calculated information in synchronization with the sampled data of the load and the load center.

Six storage units 33A, 33B, 33C, 33G, 33 that store data before the point of impact
H,33I is the setting time (
Data for T0) can be stored. The new data is sequentially stored while discarding the old data, and the update of this data is stopped at the point corresponding to the impact. In other words, data for a set time (T0) up to the point corresponding to the impact when the ball is hit is stored. In addition, the three storage units 33D, 33E, and 33F that store data after the point corresponding to the impact store data for a set time (T1) determined by the storage capacity, sampling time, and number of storage units required to store one data. It is configured to start storing from the point corresponding to the impact and sequentially store it until the time T1 has elapsed.

The determining means O determines, among the information stored in the storage device 33, information stored during the ball-batting motion from the start of the backswing to the end of the follow-swing, and among the stored information during the ball-striking motion, The parts corresponding to the top position and the impact position are determined. Next, a method for determining these parts will be explained based on FIG. 4. First, data in the storage unit 33H of detection information of the ball detecting means 21 is sequentially searched to find the point corresponding to the impact (
A storage position P3 of data indicating the point in time when the detection information of the ball detection means 21 detects a state in which the ball 24 is present to a state in which the ball 24 is absent is found. The determining means O determines this storage position P3 as the data at the time corresponding to the impact, and then transfers the data in the storage section 33G of the detection information of the club detecting means 22 from the storage position P3 of the data at the time corresponding to the impact to the set time T2. The data is searched sequentially in the direction of time going back from the memory position that was traced back by 100 ms, and the data in which the club detecting means 22 first detects the movement of club C toward the backswing side in the search direction appears.In other words, as time passes, the club is detected. The storage position P1 at the time when the means 22 last detected the movement of the club C toward the backswing side is found. The determining means O uses this storage position P1
is determined to be the data at the start of the ball-hitting motion. Furthermore, the set time T2 starts from the storage position P3 of the data at the time corresponding to the impact.
This is because the club detection means 22 detects the movement of the club C just before the point corresponding to the impact, and the value of T2 is appropriately about 100 mS, but it can be changed as necessary. Furthermore, the data in the storage unit 33I of the calculation information of the tangential velocity of the locus of the load center is sequentially searched in the direction going back in time from the storage position P3 of the data at the time corresponding to the impact, and the tangential velocity is determined with respect to the search direction. Find the storage position P2 where the speed is below a predetermined speed first,
The determining means O determines this storage position P2 as the top position.

The determining means O stores the stored information during the ball-hitting operation from the start point P1 of the ball-hitting operation to the top position point P1.
2, from top position time P2 to impact position time P
3 and from the impact position time point P3 to the end, and are output to the display device 4 via the interface 32.

Next, a method of displaying stored information during a ball batting operation using the display device 4 as an output means based on the discrimination information of the above-mentioned discrimination means O will be explained. That is, as described above, the display device 4 displays the stored information divided into three blocks and outputted by the discriminating means O as the stored information during the backswing, the stored information during the downswing, and the stored information during the follow swing, respectively. It is displayed in a state where it can be identified as the stored information inside. For example, as shown in FIG. 5, the graphic display device 41 displays the locus of the load center (X, Y) from the information of the X component and Y component of the load center, for example.
The whole is displayed in the same line type such as a solid line, and the backswing from P1 to P2 is displayed in red, the downswing from P2 to P3 is displayed in blue, and the follow swing from P3 onwards is displayed in yellow. In addition, in the figure, LF and RF indicate the positions of the left foot and right foot, respectively, and the foot positions can be determined very easily if they correspond to the positions drawn in advance on the table 11. , it can also be determined from the load measurement results when the subject puts their weight on only one foot at the position where they actually took their stance. Alternatively, as shown in FIG. 6, the locus of the change in the load WT over time can be plotted using the same line type, such as a solid line, throughout, and red during the backswing from P1 to P2, and red during the downswing from P2 to P3. In blue, the follow swing from P3 onward is displayed in yellow.

Next, a series of control methods for the golf practice machine will be explained according to the flowchart shown in FIG. In step S1, the screen of the display device 4 is initialized. In step S2, the determining means O determines whether the ball 24 is attached to the mounting tool 25 based on the detection information of the ball detecting means 21. When the ball 24 is present, the graphic display shows "
Please take a swing" and proceed to the next step S3. If there is no ball, the graphic display device 41 displays "Please set the ball" and returns to A. In step S3, the data stored in the storage device 33 and the display on the display device 4 are cleared. Then, the next step S4
Proceed to. In step S4, four load cells 12 to 15 are
The respective outputs W1 to W4 are processed as described above and sequentially taken into the processing device 3 via the I/O interface 32. Further, the detection information of the ball detection means 21 and the club detection means 22 is also sequentially taken into the processing device 3 via the I/O interface 32. Then, the process advances to the next step S5.

In step S5, the subject's load and load center are calculated by the arithmetic processing means 31 in the processing device 3, and time series data of the calculated load and load center are stored in the storage device 33. Further, the detection information of the club detection means 22 and the detection information of the ball detection means 21 are sampled in synchronization with the sampling data of the load and load center, and are stored in the storage device 33. Furthermore, the arithmetic processing means 31 calculates the tangential velocity of the locus of the load center from the load center data, and the calculated information is sampled in synchronization with the load and load center sampling data and stored in the storage device 33. to be memorized. Then, the process advances to the next step S6. In step S6, the step S
The load center calculated in step 5 is displayed as a point on the graphic display device 41 in real time. Then, the process advances to the next step S7. In step S7, the processes from step S3 to step S6 are continued until the set time T1 stored in the storage device 33 has elapsed from the impact equivalent time. Then, the process advances to the next step S8.

In step S8, the determining means O determines the start point P1 of the ball-striking motion, the top position time P2, and the impact position P3, and also stores information stored during the ball-striking motion from the start time P1 of the ball-striking motion to the top position. Time point P2
From the top position P2 to the impact position P3
3 from the impact position point P3 to the end
It is divided into blocks and output to the display device 4 via the interface 32. Then, the process advances to the next step S9. In step S9, the respective stored information divided into three blocks and outputted by the discriminating means O in step S8 are divided into the stored information during the backswing, the stored information during the downswing, and the stored information during the follow swing. It is displayed on the display device 4 in a state that can be identified as information. Then return to A.

[Other Embodiments] ■ In addition to the above-mentioned embodiments, examples of displaying stored information during a ball batting operation include displaying stored information as a two-dimensional trajectory, stored information during a backswing, stored information during a downswing, Further, each piece of stored information during follow swing may be displayed in such a manner that adjacent pieces of information are of different line types. For example, as shown in Figure 8, the load center (X, Y
), the solid line during the backswing from P1 to P2,
The downswing from P2 to P3 may be shown as a dotted line, and the follow-swing from P3 onwards may be shown as a dashed line.

[0024] Furthermore, as an example of displaying the stored information during the ball batting operation, in addition to the above embodiment, the entirety is a two-dimensional locus of the same line type and the same color, and the top of the locus is Marks that can identify the respective positions may be displayed in portions corresponding to the positions and impact positions. For example, as shown in Fig. 9, the locus of the load center (X, Y) is displayed with the same line type and the same color, and the positions P2 and P3 corresponding to the top position and impact position of the locus, respectively, are displayed. , identification mark M may be displayed.

[0025] Note that although reference numerals are written in the claims for convenience of comparison with the drawings, the present invention is not limited to the structure of the accompanying drawings.

[Brief explanation of drawings]

[Figure 1] Plan view of a golf practice machine

[Figure 2] Same side view

[Figure 3] Block diagram

[Figure 4] Configuration diagram of the storage device

[Figure 5] Display example of the same display device

[Figure 6] Display example of the display device

[Figure 7] Control flowchart diagram

FIG. 8: Display example of a display device of a golf practice machine according to another embodiment.

[
FIG. 9: Display example of a display device of a golf practice machine according to another embodiment

[Explanation of symbols]

4 Output means 11 Swing stand 12 Load detection sensor 13 Load detection sensor 14 Load detection sensor 15 Load detection sensor 33. Storage means O Discrimination means S Measurement means

Claims (2)

[Claims] Claim 1: A test subject who grips a club (C) and makes a ball-hitting motion, and a load detection sensor (12, 13, 1
4, 15); and a measuring means (11) for measuring the load or load center on the swing base (11) based on the detection information of the load detection sensor (12, 13, 14, 15). S), a storage means (33) that samples the measurement information of the measurement means (S) at regular intervals and stores the data sequentially, and of the stored information of the storage means (33), from the start of the backswing. A golf practice machine equipped with a discriminating means (O) for discriminating stored information during a predetermined ball hitting motion up to the end of a follow swing, and an output means (4) for outputting discriminating information of the discriminating means (O). The determining means (O) is configured to determine portions corresponding to the top position and the impact position, respectively, in the stored information during the predetermined ball batting operation, and the output means (4) is configured to determine the portions corresponding to the top position and the impact position, respectively. A golf practice configured to display memory information during the backswing, memory information during the downswing, and memory information during the follow swing in a distinguishable state based on the discrimination information of the discrimination means (O). Machine. 2. The output means (4) displays the stored information during the predetermined ball batting motion as a two-dimensional trajectory, and displays the stored information during the backswing, the stored information during the downswing, and the follow-up. 2. The golf practice machine according to claim 1, wherein each of the stored information during a swing is displayed in a state where adjacent pieces of information are displayed in different colors.