JP2740090B2 - Golf swing diagnostic equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a golf swing diagnostic device.
About the installation .

[0002]

2. Description of the Related Art Conventionally, as a golf swing practice machine,
There is a device that measures the center of load of a subject during a golf swing operation and displays it two-dimensionally as a movement trajectory.
A golf swing has been diagnosed by visually grasping the movement trajectory (see Japanese Patent Application No. 4-71788). Further, in this type of apparatus, the movement locus of the subject's load center can be displayed together with the reference locus which is the movement center of the load center of the golf swing operation of, for example, an advanced person, and the two are compared. By visually grasping the difference, the subject's golf swing was diagnosed.

[0003]

However, in the above prior art, the movement locus is viewed without any criterion.
Because it was to diagnose the golf swing of the subject,
An appropriate diagnosis could not be made. Further, even if a reference trajectory to be compared is prepared, a difference from the reference trajectory cannot be properly determined, and as a result, an appropriate diagnosis cannot be performed. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a golf swing diagnosis device that can appropriately diagnose a golf swing of a subject.

[0004]

The first characteristic feature of the golf swing <br/> diagnostic apparatus of the present invention According to an aspect of the swing grip the club
The subject, and the whole subject's body and left and right feet
Each load is independent so that the corresponding load center can be detected.
A switch consisting of a plurality of load detection
Based on the load detection information of the swing table and its swing table.
Find the load center corresponding to the entire body of the examiner and each of the left and right feet.
Begin and Mel load measuring means, address points, the twist of the body
Starting point of body turn, top point, swing of golf club
Start-down point, impact point, and
Features of the golf swing including the end point of the follow-through
Among the points, the address point and the swing-down point are detected.
Characteristic point detecting means, and measurement information and information of the load measuring means.
And a golf course based on the detection information of the feature point detecting means.
During the load corresponding to the whole body of the subject during the wing motion
The address point in the movement trajectory on the two-dimensional coordinates of the heart
The trajectory from the point to the swing-down point is
Left and right feet at the address point on dimensional coordinates
A first imaginary straight line connecting the respective load centers and a first imaginary straight line
Center of load of the whole body parallel to the line and at the swing-down point
Located between or close to the second virtual straight line passing through
The subject's golf by determining whether or not
In that a determination means for diagnosing a swing is provided.
You.

[0005] The second feature configuration is the same as the first feature configuration,
Further, the feature point detecting means may determine whether the follow-through is terminated.
Configured to detect Ryoten, said determining means, said
Follow from the swing-down point on the trajectory
The trajectory leading to the end point of the through is the two-dimensional
On the mark, the first virtual straight line and the second virtual straight line
To determine if it is located between or close to
Will diagnose the golf swing of the subject
It is configured in such a way.

The third characteristic configuration is the first characteristic configuration or the second characteristic configuration.
In the feature configuration, the feature point detecting means may further include:
Configured to detect Dee turn start point, the-size
Another means, from the address point, in the movement trajectory
The trajectory leading to the body turn start point is
Passing on the first virtual line on the two-dimensional coordinates
To determine whether or not
Is configured to diagnose the golf swing of the subject
It is in the point.

[0007] A fourth feature configuration is a first feature configuration and a second feature.
In the configuration or the third feature configuration, the feature point is further provided.
Detecting means for detecting the start point of the body turn and the top;
Position is detected, and the determination unit is configured to detect the position.
The center of load of the entire body at the top point is
To the subject's body ahead of the center of load at the
The golf of the subject is determined by determining whether or not
It is configured to diagnose a swing.

[0008] A fifth feature configuration is a first feature configuration, a second feature.
In the configuration, the third characteristic configuration, or the fourth characteristic configuration,
The feature point detecting means detects the impact point.
And the discriminating means is provided at the swing-down point.
In the process from
The center of load on the leg on the-side moves from the tiptoe to the heel side, and
The center of the load on the xing side moves from the heel to the toe side.
The subject's golf swing
In that it is configured to diagnose a bug.

[0009]

According to the first characteristic configuration of the present invention, the center of the load corresponding to the whole body of the subject during the golf swing operation is determined.
Of the movement trajectory on the two-dimensional coordinates, the trajectory portion from the address point to the body turn start point that starts torsion of the body and the top point to the swing down point that starts swinging down the golf club The golf swing of the subject is diagnosed by paying attention. That is, the trajectory from the address point to the swing-down point moves to the rear side of the subject from the first virtual straight line because the body axis serving as the rotation axis of the golf swing unnecessarily rises, The trajectory portion from the address point to the swing-down point is generally in front of the subject with respect to the first virtual straight line with respect to the second virtual straight line that is in front of the subject with respect to the first virtual straight line because the axis is unnecessarily turned forward. If it moves, the ball cannot be hit properly and a good golf swing will not be obtained. Conversely, if it is located between or close to the first virtual straight line and the second virtual straight line A good golf swing as a whole is obtained. Therefore,
When the examiner performs a golf swing on the swing table, the measurement
The means is a load corresponding to the whole body and the left and right feet of the subject.
Find the center of gravity, and the feature point detection means
Starting point of body turn, top point, golf
Impact point, impact to start swinging down the club
Golf points that include points and follow-through end points
Address points and swing-down points
To detect. Then, the determination means includes the measurement information of the measurement means and
Address points based on the detection information of the
The above trajectory from the swing point to the swing-down point
In the above, the position between the first virtual straight line and the second virtual straight line
To determine whether or not
Therefore, the golf swing of the subject is diagnosed.

According to a second characterizing feature of the present invention, the first
Two-dimensional coordinates of the center of load corresponding to the entire body of the subject during the golf swing operation, along with the diagnosis based on the feature configuration
The golf swing of the subject is diagnosed by focusing on the trajectory from the swing-down point to the end point of the follow-through through the impact point in the upper trajectory. That is, the body axis serving as the rotation axis of the golf swing unnecessarily rises, and the locus portion from the swing-down point to the end point of the follow-through moves to the rear side of the subject with respect to the first virtual straight line. If the trajectory from the address point to the swing-down point moves forward of the subject from the second imaginary straight line due to rolling or unnecessarily turning the body axis forward, hitting the ball properly Therefore, a good golf swing is not obtained, and conversely, if the golf ball is located between or close to the first virtual straight line and the second virtual straight line, a good golf swing is obtained. Therefore, feature point detection
The means also detects the end point of the follow-through, and
Is from the swing-down point to the end point of the follow-through
The trajectory portion is a first virtual straight line on the two-dimensional coordinates.
State located between or close to the line and the second virtual straight line
The subject's golf
Diagnose the swing. By this diagnosis, the first characteristic structure
It is possible to perform a more severe diagnosis than the diagnosis based on the diagnosis.

According to a third feature configuration of the present invention, the first feature
Along with the diagnosis based on the feature configuration or the diagnosis based on the second feature configuration, a body turn is started from an address point in a moving trajectory on a two-dimensional coordinate of a load center corresponding to the entire body of the subject during a golf swing operation. The golf swing of the subject is diagnosed by paying attention to the trajectory leading to the point. That is, in the first half of the backswing from the address point to the start of the body turn, the body axis serving as the rotation axis of the golf swing unnecessarily rises, and the trajectory therebetween is behind the first virtual straight line. If the body axis moves to the side, it can be grasped by the diagnosis based on the first feature. However, even if the trajectory therebetween does not extend beyond the second virtual straight line further forward, the body axis is If the trajectory part shifts from the first virtual straight line to the front side of the subject due to unnecessary turning, etc., the left shoulder is unnecessarily lowered by the back swing, and the trajectory of the club head is not stabilized, so there is room for improvement. It can be said that there is a swing with. Therefore,
The mark detection means also detects the body turn start point,
The steps are from the address point to the start point of the body turn.
The trajectory portion is a first virtual straight line on the two-dimensional coordinates.
Determine if it is above or close to above
By doing so, the golf swing of the subject is diagnosed.
By this diagnosis, the diagnosis by the first characteristic configuration, or
Diagnosis that is more severe than that of the second feature configuration is possible
Becomes

According to the fourth characterizing feature of the present invention, the first
Diagnosis by characterizing feature, diagnosis by the second characteristic configuration, or, in accordance with the diagnosis according to the third characterizing feature, paying attention to the position of the load center of the entire body in the load center and body turn start point of the whole body in the top point To diagnose the golf swing of the subject. That is, from the body turn start point to the top point, when the subject pulls the club to the backswing side, it is desirable that the load center corresponding to the entire body moves to the front side of the subject as the subject's posture changes, If the subject pulls the club forward of the subject more than necessary, that is, the so-called inside side, the position of the load center at the top point will be located behind the subject at the position of the load center at the body turn start point. Become. Also in this case, it can be said that the club head does not draw a desirable trajectory, and there is room for improvement. Therefore, the features
The point detection means also detects the body turn start point and top position.
Out, the discriminating means is the load center of the whole body at the top point
Is the center of the body's load at the start of the body turn.
To determine whether the subject is located in front of the subject
To diagnose the golf swing of the subject. This diagnostic
As a result, the diagnosis based on the first feature configuration and the second feature configuration are performed.
From the diagnosis based on the configuration or the diagnosis based on the third characteristic configuration.
More strict diagnosis is possible.

According to the fifth characterizing feature of the present invention, the first
Diagnosis by characterizing feature, diagnosis by the second characteristic configuration, diagnosis according to the third characterizing feature, or, in conjunction with the diagnosis by <br/> to the fourth characterizing feature, in the course of the swing-down point to the impact point, The golf swing of the subject is diagnosed by focusing on how the center of load moves to each of the right and left feet of the subject. That is, in the process from the swing-down point to the impact point, when the load center of the subject's follow-through foot moves from the toe to the heel side, and the load center of the back swing side foot moves from the heel to the toe side. In this process, the subject is rotating his body properly. Obedience
Therefore, the feature point detecting means also detects the impact point,
The steps are in the process from the swing-down point to the impact point.
The center of load on the subject's follow-through foot
To the heel side and the load on the backswing side foot
By determining whether the heart moves from the heel to the toe side
To diagnose the golf swing of the subject. According to this diagnosis
The diagnosis according to the first characteristic configuration and the second characteristic configuration
Diagnosis, the diagnosis by the third characteristic configuration, or the
More strict diagnosis is possible than the diagnosis with 4 features
You.

[0014] Incidentally, as described above, the first feature structure of the present invention
In any of the configurations , the second feature configuration , the third feature configuration , the fourth feature configuration , and the fifth feature configuration , the golf swing of the subject can be diagnosed based only on the data of the golf swing of the subject.

[0015]

The first characteristic configuration, the second characteristic configuration, and the third characteristic configuration
According to the feature configuration, the fourth feature configuration, or the fifth feature configuration
For example, as described above,
Based on the determination result, the golf swing of the subject
You can now diagnose.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a golf practice machine to which the present invention is applied will be described below with reference to the drawings. 1 to 3,
1 is a swing table, 2 is a ball mounting table, 3 is a processing device, and 4 is a display device. The golf practice machine of the present embodiment processes the detection data of the load detection sensor D provided on the swing table 1 by the processing device 3 during the swing, displays the center of the load on the display device in real time, and displays the load or After temporarily storing the time-series data of the load center, the swing of the subject is determined, and the load or the data of the load center is displayed after the swing together with the determination result. Hereinafter, each device will be described.

The swing table 1 includes two load detection tables 10 and 11 corresponding to the left and right legs, respectively.
Are four load cells 12, 1 as load detection sensors D
Four corners are supported by 3, 14, and 15, and the load detection base 11 is supported at four corners by four load cells 16, 17, 18, and 19 as load detection sensors D. On the swing table 1, the subject holding the club C swings. At this time, the loads applied to the swing table 1 are eight load cells 12, 13, 14, 15, 16, 17, 18, and 1 supporting the two load detection tables 10 and 11.
9, the load and the load center of the subject, and further, the load centers corresponding to the left and right feet of the subject are obtained from these outputs as described later.

A support 25 on which the ball 24 is placed when practicing swinging with a wood club or the like is mounted on the ball mounting table 2. On the swing table 1 side of the support 25, an iron club or the like is mounted. A marker 70 indicating a position at which a ball is directly mounted on the ball mounting table 2 during swing practice is drawn. The presence or absence of the ball 24 is detected on both sides of the support 25 and the marker 70 across the club head passage, and the ball 24 is placed in the support 2.
When the ball is placed on the support 5 or the marker 70, it functions as a reset switch when starting a new swing, and the ball 24 on the support 25 or the marker 70 is hit by the club C on the support 25. A ball detection sensor 21 is provided for detecting the point at which the golf ball has disappeared as an impact point, which is one of the characteristic points in the golf swing. Support 2
On both sides of the club head passage on the back swing side of the marker 5 and the marker 70, a club detection sensor 22 for detecting the movement of the club C to the back swing side is provided.

Ball detection sensor 21 and club detection sensor 2
Each of the reference numerals 2 includes a transmission type optical sensor. The arrangement of these sensors is such that the light emitting portion 21a of the ball detecting sensor 21 and the light emitting portion 22a of the club detecting sensor 22 are installed on the opposite side of the swing head 1 in the club head passage, and the club head of the light emitting portions 21a, 22a is provided. On the opposite side of the passage, a light receiving portion 21b of the ball detection sensor 21 and a light receiving portion 22b of the club detection sensor 22 are installed so as to face the respective light emitting portions 21a, 22a. The detection light emitted from the light emitting portion 21a of the ball detection sensor 21 is received by the light
b, the detection light is made to pass through the area where the sphere 24 above the support 25 and the marker 70 should exist, and when the sphere 24 is placed on the support 25,
When a ball is placed on the marker 70, the presence or absence of the ball 24 can be similarly detected. The projection path of the detection light of the club detection sensor 22 is set so as to be substantially parallel to the projection path of the detection light of the sphere detection sensor 21. Even when the sphere 24 is placed on the support 25, the marker 70 When putting a ball on top,
It is possible to reliably detect the passage of the club.
Drive circuits for the ball detection sensor 21 and the club detection sensor 22 are built in the control box 26.

The processing unit 3 includes an arithmetic unit 31 for performing arithmetic processing for obtaining the load and the center of load, sequence control of the apparatus, an I / O interface 32 for transferring various data, and measuring information of the load and the center of the load. It comprises a storage device 33 for storing, an operation console 34 for selecting an operation mode of the device and inputting various comments, and an external storage device 35 for storing measurement information and the like. The display device 4 includes a graphic display device 4a and a plotter 4b, and the graphic display device 4a displays the movement locus of the center of the load, and the plotter 4b displays the time change of the load.

Next, a process in which the arithmetic unit 31 functioning as the load measuring means M obtains the load and the center of the load will be described. The subject holding the club C takes a stance by standing at the approximate center of the swing table 1 with the left and right feet resting on the two load detection tables 10 and 11, respectively. The load detection table 10 on which the subject places the left foot will be described as an example. The load cells 12, 13, 14, and 14 at the four corners of the load detection table 10 will be described.
For the output of No. 15, the platform load was previously canceled by zero adjustment in the load converter 100, and the total WL of the outputs W 1, W 2, W 3, and W 4 was the total WL of the subject on the load detection table 10. It becomes the load of the left foot. That is, WL = W1 + W2 + W3 + W4 Further, at this time, the position where the load is applied and the four load cells 1
Since the shared output of each load cell differs depending on the relationship with the installation positions 2 to 15, the load center of the load applied to the load detection table 10 can be obtained from these outputs.

That is, a horizontal component X and a front-rear component Y of the load center expressed with the load cell 12 in FIG.
Is that four load cells 12 to 15 have a width a in the X direction and a width Y in the X direction.
In the case where the width of the direction is arranged at the four corners of the rectangular load detection table 10 having the width b, it can be obtained from X = (W2 + W3) × a / WL Y = (W3 + W4) × b / WL. Note that the load cells 12, 13,
Even when the arrangement of 14 and 15 is not at the four corners of the rectangle, the center of load can be obtained by performing a correction unique to the geometric arrangement of the load cells. If three or more load cells are provided, the center of load applied to the swing table 1 can be obtained. The load detection table 11 on which the subject places the right foot is also configured in the same manner as the load measuring device 10,
In the same manner as above, the load center of the load applied to the load detection table 11 can be obtained. That is, the center of load corresponding to each of the right and left feet of the subject can be obtained.

Further, regarding the load on both feet of the subject, that is, the entire body and the load center, the load applied to the load detecting table 11 is represented by W
Let R be the load cell 16 as in the case of the left foot.
From the outputs W5 to W8 of ８19, WR = W5 + W6 + W7 + W8 The load WT of the whole body is obtained by WT = WL + WR, and the load center is the distance between the load center corresponding to the subject's left foot and the load center corresponding to the right foot. Assuming that L is on a line segment connecting the left and right load centers, it is located at a position WR × L / WT away from the load center corresponding to the left foot, and this may be calculated.

As shown in FIG. 3, eight load cells 12 to
Outputs W1 to W4 and W5 to W8 of 15 and 16 to 19
Is a load converter 100 having a measurement bridge circuit and an A / D converter. After compensating for the weight of the swing table 1 as described above, the load converter 100 is sampled at regular intervals to obtain a digital value. Then, the data is sequentially taken into the processing device 3 via the I / O interface 32. The load WT, the load center, and the load center corresponding to each of the left and right feet of the subject are obtained by the arithmetic unit 31 in the processing device 3 according to the above-described formula. Then, the determined load centers corresponding to the left and right feet of the subject and the load centers corresponding to the entire body of the subject are displayed in real time on the graphic display device 4a of the display device 4, and further, the time series data of the load, Further, the time series data of the load center corresponding to each of the left and right feet of the subject and the load center corresponding to the entire body of the subject, that is, the movement trajectory is stored in the storage device 33. The storage of these time-series data is performed when the ball detection sensor 21 stores the ball 2 on the support 25 or the marker 70.
From the time when the device is reset after detecting that the ball 4 has been placed, to the impact point at which the ball detection sensor 21 detects that the ball 24 on the support 25 or the marker 70 has been hit and lost. Is stored endlessly in the storage area of the storage device 33 having an appropriate storage capacity so that the oldest data is sequentially rewritten with the latest data, and the data after the impact point is stored in a storage area corresponding to a predetermined time width. It is stored in another storage area having a capacity.

Along with these time series data, the load center corresponding to each of the right and left feet of the subject at the time of addressing, the load center corresponding to the whole body of the subject, the load center corresponding to the whole body at the start point of the body turn, and the top position. The load center corresponding to the entire body at the point, the load center corresponding to the entire body at the swing-down point, the load center corresponding to the entire body at the impact point, and the load center corresponding to the entire body at the finish point are also stored in the storage device 33. It is memorized. Each load center at the time of addressing is obtained by averaging the positions of each load center before the swing start point detected as described later.

Next, a process in which the club detection sensor 22 and the arithmetic unit 31 detect a swing starting point which is one of the characteristic points in the golf swing will be described. In the storage device 33, together with the data of the load and the load center,
Information as to whether or not the club detection sensor 22 has detected passage of the club head is also stored in chronological order. Based on the stored information, the arithmetic unit 31 sets the time when the first club detection sensor 22 detects the passage of the club head retroactively from the impact point, except for the time of about 100 ms immediately before the impact point, as the swing start point. To detect.

Next, a process in which the arithmetic unit 31 detects a body turn starting point which is one of the characteristic points in the golf swing will be described. Of the load and load center data obtained by the arithmetic unit 31 and stored in the storage unit 33 as described above, the time change of the load on the lower leg of the subject in the backswing direction shown in FIG. In FIG. 6, an example of a device configuration for a right-handed subject is shown. In the time change of the right foot load, a search is started from data corresponding to a swing start point indicated by a point A in FIG. The position on the time axis of B is detected as the body turn start point.

Next, a process in which the arithmetic unit 31 detects a top position which is one of the characteristic points in the golf swing will be described. The arithmetic unit 31 time-differentiates the component in the left-right direction, that is, the X direction, of the time-series data of the load center corresponding to the entire body of the subject stored in the storage device 33 obtained as described above, and calculates the X of the load center. The time change of the moving speed in the direction is obtained. In the time change of the moving speed in the X direction illustrated in FIG. 7, a point F, which is a predetermined time earlier than the impact point data detected by the ball detection sensor 21 indicated by a point E in FIG. Point F indicating the reference time
The data is searched for in the direction going back in time from, and the sign of the moving speed in the X direction first reverses from negative to positive, that is, the point G where the directionality of the moving speed in the X direction first reverses is set as the top position. To detect. Note that the time interval from the point E indicating the impact point to the point F which is the reference time is erroneously determined as the top position because the direction of the moving speed may be in the backswing direction immediately before the impact point. This time interval is appropriately about 200 mS in order to prevent detection.

Next, the process in which the arithmetic unit 31 detects a swing-down point which is one of the characteristic points in the golf swing will be described. Among the data obtained by the arithmetic unit 31 and stored in the storage device 33 as described above, the time change 90 of the right foot load and the time change 91 of the left foot load shown in FIG. From H
Up to the point I indicating the impact point detected by the ball detection sensor 21 corresponds to a downswing. During this downswing, from the point J indicating the point at which the load on the left and right feet of the subject becomes equal, the foot on the upper hand side in the downswing direction within the time t on the side where time passes and the time t 'on the side going back in time. Is obtained, that is, the rate of change of the load on the right foot, that is, the time differential value. It is appropriate that the time widths t and t 'are both about 50 mS. The point K indicating the time when the absolute value of the rate of change of the time change 90 of the right foot load becomes the minimum value is detected as a swing-down point. In addition, 0.2 seconds after the impact point detected by the ball detection sensor 21 is detected as a finish point which is one of the characteristic points in the golf swing. Therefore, the feature point detecting means S
Are the calculation means 31, the ball detection sensor 21, and the club detection
The sensor 22 is constituted.

Next, the process in which the arithmetic unit 31 performs the process of determining the golf swing of the subject will be described. This judgment is made up of an overall evaluation and six individual evaluations, which will be described sequentially with reference to FIGS.

First, a comprehensive evaluation is made of the load center 114 at the address point in the movement locus 111 of the load center corresponding to the whole body of the subject during the golf swing shown in FIG.
Load center 115 at the start of the body turn, and
This is performed based on a portion extending to the load center 117 at the swing-down point via the load center 116 at the top point. That is, the load center 114 at the above address point
The locus portion from the swing point to the load center 117 at the swing-down point is the load center 11 of each of the left and right feet at the address point.
0 and a second virtual straight line 121 that is parallel to the first virtual straight line and passes through the load center 117 at the swing-down point, or is in a state close to it, that is, Position between the auxiliary determination straight line 120 ′ translated in the Y-axis negative direction by Δc from the first virtual straight line 120 and the auxiliary determination straight line 121 ′ translated in the Y-axis positive direction by Δd from the second virtual straight line 121. If so, the subject's swing is determined to be “good”; otherwise, it is determined to be “bad”. The first virtual line 120 and the second
The intervals Δc and Δd between the virtual straight line 121 and the auxiliary determination straight lines 120 ′ and 121 ′ can be set and changed at 0 or more.

The first individual evaluation is a judgment on the first half of the backswing from the address point to the start point of the body turn. That is, in the overall evaluation, the determination is “good”, and the load center 1 at the body turn start point is shifted from the load center point 114 at the address point.
If the trajectory portion up to 15 passes or is close to the first virtual straight line 120, it is also determined to be “good” in this individual evaluation. If the condition is other than the above, all are determined to be "bad". Even if the overall evaluation is "good", if the condition in the individual evaluation is not satisfied, the determination is "bad". The trajectory from the address point to the body turn start point is the first
The determination as to whether or not it is passing on or near the virtual straight line 120 is based on the magnitude relationship between the total area of the area sandwiched by the locus portion and the first virtual straight line 120 and the determination value that can be changed. If the sum of the areas is smaller than the discrimination value, the trajectory portion is set to the first virtual straight line 120.
It is determined that the vehicle is passing over or close to the above.

The second individual evaluation is a judgment on the latter half of the backswing from the start point of the body turn to the top point. That is, in the above-mentioned comprehensive evaluation, the judgment was “good”, and the load center 1
16 is the load center 115 at the start point of the body turn
If it is located on the anterior side of the subject, that is, on the positive side in the Y-axis direction in FIG. If the condition is other than the above, all are determined to be "bad". Even if the overall evaluation is "good", if the condition in the individual evaluation is not satisfied, the determination is "bad".

The third individual evaluation is a judgment on the part of the downswing and the follow-through from the swing-down point to the end point of the follow-through, that is, the finish point. That is, in the overall evaluation, the judgment is “good”, and the trajectory from the load center 117 at the swing-down point to the load center 119 at the finish point via the load center 118 at the impact point is the first virtual If it is located between the straight line 120 and the second imaginary straight line 121 or in a state close to it, it is also determined to be “good” in this individual evaluation. If the condition is other than the above, all are determined to be "bad". Even if the overall evaluation is "good", if the condition in the individual evaluation is not satisfied, the determination is "bad". Note that, in this individual evaluation, as in the case of the above-described comprehensive evaluation, the first virtual straight line 120
It is determined whether or not it is located between and the second virtual straight line 121 or in a state close to it.

The fourth individual evaluation is a judgment on the downswing portion from the swing-down point to the impact point. That is, in the above-mentioned comprehensive evaluation, it is judged as “good”, and the center of load at the point of swinging down of the foot on the follow-through side of the subject, that is, in the present embodiment, a right-handed subject is illustrated. From the load center 122 to the load center 123 at the impact point of the left foot, which is the foot on the follow-through side, moves from the toe to the heel side, that is, the negative direction of the Y-axis in FIG.
In this embodiment, the load center 125 at the impact point of the right foot, which is the back swing side foot, from the load center 125 at the swing down point of the back swing side foot, that is, the right foot in this embodiment.
If the trajectory from the heel moves from the heel to the toe side, that is, the positive direction of the Y axis in FIG. And all other states are "bad"
Thus, even if the overall evaluation is “good”, if the condition in the individual evaluation is not satisfied, “bad” is determined. Therefore, the calculating means 31 is used as the discriminating means T.
Function.

The fifth individual evaluation includes the first to fourth evaluations.
Unlike the individual evaluation, the judgment is made independently and independently of the judgment result of the comprehensive evaluation. The subject of the determination is the load on the entire body of the subject during the downswing operation. In the time change 130 of the weight of the whole body of the subject shown in FIG.
If the time point 132 at which the load is maximized in the downswing motion from the time point 131 corresponding to the top point is on the side that goes back in time from the time point 133 corresponding to the impact point, it is also determined to be “good” in this individual evaluation. Otherwise, it is determined as "bad".

The sixth individual evaluation also includes the first to fourth evaluations.
Unlike the individual evaluation, the judgment is made independently and independently of the judgment result of the comprehensive evaluation. The position to be determined is the position where the moving speed of the load center is highest between the subject's top point and the swing-down point. That is, the moving speed of the load center is calculated from the time change of the position of the load center from the load center 116 at the top point to the load center 117 at the swing-down point in FIG. 4, and the maximum speed point at which the moving speed becomes the highest is calculated. 126 is obtained. Then, the X-axis coordinates x ₁ , x of the load center 117 at the swing-down point, the maximum speed point 126, and the load center 116 at the top point, respectively.
₂ , x ₃ , the load at the top point of the distance between the load center 116 at the top point and the maximum speed point 126 on the X-axis, which is an indicator of how close the highest speed point 126 is to the load center 116 at the top point. A ratio value of the distance between the center 116 and the load center 117 at the swing-down point on the X-axis is calculated by (x ₃ −x ₂ ) / (x ₃ −x ₁ ), and this ratio value is larger than the set value. If smaller, the highest speed point 126 is determined to be “good” as being close to the load center 116 at the top point, and otherwise determined to be “bad”. The set value for this determination may be about 0.5, but of course can be changed.

Next, the operation of the apparatus in use will be described with reference to the flowchart of FIG. 9 and the display examples of FIGS. The control of the sequence of the flowchart of FIG. 9, the determination processing of the golf swing, the arithmetic processing, and the like are performed by the arithmetic unit 31. FIG.
In the flowchart of FIG. 5, after the power switch (not shown) is turned on to start the apparatus, the operator sets the operation mode of the apparatus from the console 34 (step # 1). There are two operation modes, a reference trajectory display mode and a reference trajectory non-display mode. In the reference trajectory display mode, the movement trajectory or the like of the load center corresponding to the entire body of the subject stored in the storage device 33 as past data is displayed as reference data on the graphic display device 4a together with display data on a new swing. In the reference trajectory non-display mode, the reference data is not displayed, and only the display data relating to the new swing is displayed.

When one of these two modes is selected to complete the setting of the operation mode, it is determined in step # 2 whether the operation mode is set to the reference trajectory display mode. If the operation mode is set to the reference trajectory non-display mode, the process proceeds to step # 5 without doing anything. If the operation mode is set to the reference trajectory display mode, the operator can check the subject's information stored in the storage device 33. A desired trajectory is selected as a reference trajectory 40 from among the trajectories of the load center corresponding to the entire body (step # 3). When the selection is completed, the selected reference trajectory 40, the reference individual address point 41 indicating the load center corresponding to each of the right and left feet of the subject at the address in the swing of the reference trajectory 40, and the subject's body at the address Reference address point 42 indicating the load center corresponding to the whole,
Reference body turn start point 4 indicating the center of load corresponding to the entire body of the subject at the start of the body turn
3. The reference top point 44 indicating the center of load corresponding to the entire body of the subject at the top position, the reference swing-down point 45 indicating the center of load corresponding to the entire body of the subject at the swing-down point, and the entire body of the subject at the impact point. Reference impact point 46 indicating the corresponding load center, and reference finish point 47 indicating the load center corresponding to the entire body of the subject at the finish point.
Is displayed on the graphic display device 4a (step #).
4), proceed to step # 5.

In step # 5, the ball detection sensor 21
It is determined whether or not the ball 24 is placed on the support 25 or the marker 70 based on the detection information. If the ball 24 is not on the support 25 or the marker 70, the load corresponding to the entire body is determined. The center of the load and the center of the load corresponding to each of the right and left feet are displayed in real time, and the process returns to step # 5.
That is, the detection data of the load detection sensor D is fetched (Step # 15), and as shown in the display example of FIG. 10, arithmetic processing is performed, and the load centers corresponding to the whole body and the load centers corresponding to the left and right feet, respectively. (Step # 16), and displayed on the graphic display device 4a as the load center point 50 of the left and right feet and the load center point 51 of the whole body, respectively, and further, the ratio of the load of each of the left and right feet to the total load (that is, , WL
/ WT and WR / WT), and the graphic display device 4
In the display fields 52 provided at both left and right ends of the display screen a, a ratio display point 53 is displayed so that the larger the ratio value, the higher the ratio display point 53 (step # 17). Note that the display example of FIG. 10 illustrates a case where the reference trajectory display mode is selected in step # 1. After performing this screen control, it is determined whether or not the mode change switch of the console 34 has been pressed (step # 18). If it has been pressed, the process returns to step # 1 and the operation mode can be set. If not, the process returns to step # 5.

In step # 5, the ball 24 is
5 or on the marker 70, the device is in a reset state, the load data of a new swing is collected, the data is calculated, the load center corresponding to the whole body, and the right and left feet The collected data is stored in the storage device 3 while displaying the corresponding load centers and the like in real time.
Go to 3 That is, the storage data such as the reference locus and the display on the graphic display device 4a are left as they are, and the storage data corresponding to the previous swing and the display on the graphic display device 4a are cleared (step # 6). Then, the detection data of the load detection sensor D is taken in (Step # 7), and the load and the load center of the whole body, the load center corresponding to each of the left and right feet, and the ratio of the load of each of the left and right feet to the total load. Is calculated in the storage device 33 and stored in the storage device 33, and the calculation result is displayed on the graphic display device 4a as the load center point 50 of the left and right feet, the load center point 51 of the whole body, and the ratio display point 53 (step #). 8 and # 9).

After this screen control, it is determined whether or not the swing has already been completed based on whether or not a predetermined time has elapsed from the impact point (step # 10). Return to position 7. If it is determined that the swing has already been completed after a predetermined time has elapsed from the impact point, a determination is made as to whether the swing of the subject is good (step # 11). After the end of the determination processing, as shown in FIG. 11, for the completed swing, the movement locus 55 of the load center of the whole body, the movement locus 56, 57 of the load center corresponding to each of the right and left feet, and the address time The individual address points 58 indicating the load centers corresponding to each of the right and left feet of the subject are identified by identification marks 59a to 59f of respective characteristic points of address, body turn start, top, swing down, impact, and finish.
At the same time, it is displayed on the graphic display device 4a.

Of these displays, the position of the address point identification display 59a and the position of the swing-down point identification display 59d, or the position of the swing-down point identification display 59d within the horizontal width of the movement locus 55 of the load center of the entire body. Focusing on the position,
A diagnosis of the golf swing of the subject can be made. That is, when the diagnosis is performed by focusing on the positions of the identification display 59a of the address point and the identification display 59d of the swing-down point, the identification display 59d of the swing-down point is located almost in front of the identification display 59a of the address point as viewed from the subject. If it is located at the position, it means that the state of the address point is reproduced at the swing-down point, and it can be determined that the golf swing is good. When the diagnosis is performed by paying attention to the position of the identification point 59d of the swing-down point within the left and right widths of the movement locus 55 of the load center of the entire body, the identification mark 59d of the swing-down point indicates the movement of the load center of the entire body. If it is located near the center in the left and right width of the trajectory 55, it can be determined that the golf swing is good.

At the upper end of the display screen of the graphic display device 4a, an address left foot load ratio indicating the ratio of the left foot load to the total load at the address, a top right foot load ratio indicating a ratio of the right foot load to the total load at the top position, as well as,
Impact left foot load ratios indicating the ratio of the left foot load to the total load at the impact point are displayed. The golf swing of the subject can be diagnosed by focusing on the respective display values of the top right foot load ratio and the impact left foot load ratio among these displays. That is, the top right foot load ratio is 70
If the impact left foot load ratio is 70 to 85%, it means that the movement trajectory of the load center of the whole body is sufficiently widened in the lateral direction of the subject, and it is a good golf swing. It can be determined.

At the lower end of the display screen of the graphic display device 4a, the judgment result of the judgment processing by the arithmetic unit 31 is given. The evaluation of the first half of the backswing to the starting point is referred to as “backswing (front)”, and the evaluation of the second half of the backswing from the starting point of the body turn to the top point, which is the second individual evaluation, is referred to as “backswing”. As the third individual evaluation, the evaluation from the swing-down point to the end point of the follow-through, that is, the finish point, is referred to as “down + follow”.
The evaluation of the part of the downswing from the swing-down point to the impact point, which is the fifth individual evaluation, corresponds to the maximum load point and the impact point during the downswing operation, which is the fifth individual evaluation, as the "body turn". The evaluation of the context with respect to the time point is referred to as “impact timing”, and the evaluation of the position where the moving speed of the load center is the highest from the top point to the swing-down point, which is the sixth individual evaluation, is referred to as “weight shift”. Respectively ". In the display for the sixth individual evaluation,
Along with the determination result, the distance between the load center 116 at the top point and the maximum speed point 126 on the X axis, the load center 116 at the top point and the load center 1 at the swing-down point 1
The ratio value with respect to the interval on the X-axis with X.17 is displayed. FIG. 11 also shows a display example when the reference trajectory display mode is selected, as in FIG.
The display of the ratio display point 53 in the display column 52 indicates the state of the impact point.

Also, in the display of the movement locus 55 of the load center in FIG. 11, a straight line connecting the load centers 58 of the left and right feet at the address point corresponding to the first virtual straight line 118 in FIG. Dotted line 60 corresponding to the second virtual straight line 119
Identification 59 that is parallel to and corresponds to the swing-down point
A straight line passing through d is displayed together with a dotted line 61. Thus, the subject, the person who is instructing the subject, and the like can visually diagnose the swing in the same manner as the determination process performed by the arithmetic device 31 as described above.

Further, data on the time change of the load corresponding to the whole body as shown in FIG. 12 is displayed on the plotter 4b (step # 12). In the display of the time change of the load corresponding to the whole body, the start of the swing, the start of the body turn, the top, the swing down, the impact, and the
Identification display 80 at the time corresponding to each feature point of the finish
a to 80f are displayed together with operation state schematic displays 81a to 81f schematically showing the respective states.

Further, in the display of the time change of the load corresponding to the whole body in FIG. 12, a dotted line 82 indicating a time point corresponding to an impact point is also displayed. Thus, the subject, the person who is instructing the subject, and the like can visually diagnose the swing in the same manner as the determination process performed by the arithmetic device 31 as described above.

The display on the graphic display device 4a displays data from the swing start point to the finish point, and the display on the plotter 4b displays data for a predetermined time before and after the impact point. Thereafter, when the measured load and the data of the load center are not stored, the position returns to the position where the presence or absence of the ball 24 is detected.
After transferring the measurement data to the data storage area of No. 3 (steps # 13 and # 14), the process returns to the position of step # 5.

[Other Embodiments] Other embodiments will be listed below. In the above embodiment, the determination of “good” or “bad” in the first to fourth individual evaluations is performed when both the evaluation items in the individual evaluation and the evaluation items in the comprehensive evaluation are satisfied. Is determined to be "good", for example, when all of the evaluation items in the comprehensive evaluation, the first individual evaluation, and the third individual evaluation are satisfied, the judgment is "good". For example, the determination may be made by appropriately combining a plurality of individual evaluations and a comprehensive evaluation.

In the above embodiment, if the judgment in the comprehensive evaluation is “poor”, the judgment result is “poor” even if the judgment condition of the evaluation item in each individual evaluation is satisfied, and the judgment of “poor” is made. Although the result is displayed, it may also be displayed that the criterion in the individual evaluation is satisfied.

In the above embodiment, in the comprehensive evaluation and the third individual evaluation, the determination as to whether or not it is located between or close to the first virtual straight line 120 and the second virtual straight line 121 is assisted. The determination is made using the determination straight lines 120 'and 121'.
The area of the portion protruding from between the virtual straight line 120 and the second virtual straight line 121 is determined, and the area value is compared with a criterion value that can be changed. If the value is smaller than the criterion value, the criterion is satisfied. If it is larger than the reference value, it may be determined that the determination criterion is not satisfied.

In the above-described embodiment, in the first individual evaluation, the determination as to whether or not the vehicle passes or is close to the first virtual straight line 120 is made based on the trajectory portion to be determined and the first virtual straight line 120. Is performed based on the magnitude relationship between the sum of the areas of the regions sandwiched by and the determination value that can be changed.For example, the trajectory portion to be determined is linearly approximated by the least squares method, and the slope and intercept of the straight line are determined by the second method. The comparison may be made with the inclination and intercept of one virtual straight line 120 to determine whether or not the difference is within a set allowable value.

In the above embodiment, in the sixth individual evaluation, as an index of how close the highest speed point 126 is to the load center 116 at the top point, the X of the load center 116 at the top point and the highest speed point 126 is determined. The ratio of the interval on the axis to the interval on the X-axis between the load center 116 at the top point and the load center 117 at the swing-down point is calculated. Of length,
A ratio value to the length of the movement locus from the load center 116 at the top point to the load center 117 at the swing-down point may be used as an index.

In the above-described embodiment, the golf swing of the subject can be diagnosed by focusing on the positions of the identification display 59a of the address point and the identification display 59d of the swing-down point. You may do it. That is, in FIG. 4, within the set width in the X-axis direction around the X-axis coordinate of the load center 114 at the address point,
If the X-axis coordinate of the load center 117 at the swing-down point is entered, and the Y-axis coordinate of the load center 117 at the swing-down point is on the Y axis positive direction side of the Y-axis coordinate of the load center 114 at the address point, It may be determined to be “good”, otherwise it may be determined to be “bad” and the result of the determination may be displayed on the graphic display device 4a.

In the above embodiment, the golf swing of the subject can be diagnosed by focusing on the position of the identification display 59d of the swing-down point within the left and right widths of the movement locus 55 of the load center of the whole body. 31 may do so. That is, in FIG. 4, the midpoint of the width of the movement trajectory 111 of the load center corresponding to the entire body in the lateral direction (X-axis direction) of the subject is determined, and the swing-down point is set within the set width around the midpoint. May be determined as "good" if the X-axis coordinate of the load center 117 is entered, otherwise determined as "poor" and the result of the determination may be displayed on the graphic display device 4a.

In the above embodiment, the golf swing of the subject can be diagnosed by focusing on the respective display values of the top right foot load ratio and the impact left foot load ratio.
The arithmetic unit 31 determines whether the golf swing is good or not based on whether both the top right foot load ratio and the impact left foot load ratio are within the range of 70 to 85%, and displays the determination result on the graphic display device 4a. You may do it.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a plan view of a golf practice machine to which the present invention is applied.

FIG. 2 is a side view of a golf practice machine to which the present invention is applied.

FIG. 3 is a block diagram of a golf practice machine to which the present invention is applied.

FIG. 4 is an explanatory diagram of a golf swing determination method according to the embodiment of the present invention.

FIG. 5 is an explanatory diagram of a golf swing determination method according to the embodiment of the present invention.

FIG. 6 is a diagram showing detection of a body turn start point.

FIG. 7 is a diagram showing detection of a top position.

FIG. 8 is a diagram showing detection of a swing-down point;

FIG. 9 is a diagram showing a flowchart according to an embodiment to which the present invention is applied.

FIG. 10 is a diagram showing a display example of a load center point and the like according to the embodiment to which the present invention is applied.

FIG. 11 is a diagram showing a display example of a locus of movement of a load center according to the embodiment to which the present invention is applied;

FIG. 12 is a diagram showing a display example of a time change of a load according to the embodiment to which the present invention is applied.

DESCRIPTION OF SYMBOLS 1 swing table 10, 11 load detection table 120 first virtual straight line 121 second virtual straight line D load detection sensor M load measurement means S feature point detection means T discrimination means

Claims (5)

(57) [Claims] An object to be swung while gripping a club (C).
Place the examiner on the subject's entire body and each of the left and right feet
Independent load detection so that the corresponding load center can be detected
A plurality of load detection tables (10, 1) equipped with a sensor (D)
A subject based on a swing table (1) composed of 1) and load detection information of the swing table (1)
The load center corresponding to the entire body and each of the left and right feet
Load measurement means (M), address point, body turn to start torsion of body
Points, top points, start swinging down the golf club
End of drop-down point, impact point, and follow-through
Of the characteristic points of the golf swing including points,
Feature point detecting means for detecting a rest point and the swing-down point
(S), the measurement information of the load measuring means (M) and the feature point detection
Golf swing operation based on the detection information of the means (S)
Of the center of load corresponding to the whole body of the subject in the middle
Of the movement trajectory on the coordinates, the vibration starts from the address point.
The trajectory part leading to the lowering point is on the two-dimensional coordinates.
, Connecting the load centers of the left and right feet at the address point
A first imaginary straight line and the vibration
A second imaginary straight line passing through the center of load of the entire body at the lowering point
To determine if it is located between or close to
To determine the golf swing of the subject
Golf swing diagnostic device provided with separate means (T)
Place. 2. The method according to claim 1, wherein said characteristic point detecting means (S) includes:
The determination unit (T) is configured to detect a low-through end point, and the determination unit (T) is configured to detect the end point of the movement trajectory.
From the drop-down point to the end point of the follow-through
Is located between the first virtual line and the second virtual line on the two-dimensional coordinates.
Or whether it is in a state close to it or not.
Configured to diagnose the subject's golf swing
The golf swing diagnostic device according to claim 1. 3. The method according to claim 2, wherein the characteristic point detecting means (S) is configured to
And the determination means (T) is configured to detect the start point of the pattern.
Track from the dress point to the start point of the body turn
The trace portion is the first virtual straight line on the two-dimensional coordinates.
Determine if the vehicle is passing or near the line
Will diagnose the golf swing of the subject
3. The golf swing according to claim 1, wherein the golf swing is configured as follows.
Diagnostic device. 4. The apparatus according to claim 1, wherein said characteristic point detecting means (S) includes:
To detect the turn start point and the top position
And wherein said discriminating means (T) is provided for the whole body at said top point.
The load center is during the load at the start point of the body turn.
Determine whether the subject is located in front of the subject's body
To diagnose the subject's golf swing
4. The golf swing according to claim 1, wherein the golf swing is configured.
Diagnostic device. 5. The method according to claim 1, wherein the characteristic point detecting means (S) includes
A impact point, and the determining means (T) is configured to detect the impact point from the swing-down point.
In the process to the point of impact, the load on the foot on the follow-through side
The center of gravity moves from the toe to the heel side, and backswing
It is determined whether the load center of the side foot moves from the heel to the toe side.
Diagnose the subject's golf swing by differentiating
5. The device according to claim 1, 2, 3, or 4, wherein
Luff swing diagnostic device.