JPH0780111A - Club-head measuring method and golf simulation device - Google Patents

Abstract

PURPOSE:To provide a club-head measuring method and a golf simulation device capable of correctly perceiving the condition of a club-head at the time when a golf club is swung. CONSTITUTION:The golf simulation device is provided with a start sensor row S arranged in such a way that, when a golf club is swung, the velocity of the club-head is detected, and sensor rows A to C provided with projectors capable of emitting light to the passing club-head at arbitrary light-emitting intervals and light-receivers for receiving the reflected light from the club-head. The projectors of the sensor rows A to C can change the light-emitting interval in accordance with the velocity of the club-head measured by the start sensor S, and the information on the club-head detected by these sensor rows A to C is displayed on a display unit 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a club head measuring method and a golf simulation apparatus for measuring the movement of a club head when the golf club is swung.

[0002]

2. Description of the Related Art As a golf simulation device as described above, for example, the technique disclosed in Japanese Utility Model Publication No. 62-45735 is known. The device disclosed in this publication detects the movement of the putter head when the putter is swung and arithmetically processes the detected signal to display the movement locus of the putter in segments. The configuration of the device disclosed in this publication will be briefly described below.

On a flat plate on which putting is actually performed, three sensor rows are provided at predetermined intervals along the moving direction of the putter head and at right angles to the moving direction. Each sensor row is provided with seven sensor units at a predetermined interval, and each sensor unit has one light projector along the moving direction of the putter head and the light emitted from this light projector and reflected by the passing putter head. One photodetector is arranged to detect the emitted light.

The ball is placed on the reference line between the first sensor row and the second sensor row, and the ball is putted. The central sensor unit of each sensor row is located on the reference line, and three sensor units are located on each side of each central sensor unit. And
In the putting operation, the state of the putter head that has successively passed through each sensor row is displayed for each sensor row. That is, the deviation of the putter head from the reference line and the amount of inclination of the face when passing through each sensor row are displayed in segments.

[0005]

According to the configuration of the above golf simulation device, in each sensor row,
The club head is on (a) the reference line, (b) is displaced above the reference line, (c) is displaced below the reference line, and the head face surface is (d) the reference line. It is swung because only the information that is vertical to (e) is tilted to the left from the direction perpendicular to the reference line and (f) is tilted to the right from the direction perpendicular to the reference line. It is not possible to recognize the exact state of the club head. That is, when actually swinging with an iron or a wood, the state of the face surface cannot be accurately grasped in each sensor row. Further, when swinging with an iron or a wood, an error may occur in the measurement result due to the difference in swing speed. That is, although the display result like (e) or (f) should be originally obtained, the display result like (d) may be obtained if the swing speed is extremely fast.

[0006] It is an object of the present invention to provide a club head measuring method and a golf simulation apparatus capable of accurately recognizing the state of the club head when the golf club is swung.

[0007]

In order to solve the above problems, a club head measuring method according to the present invention comprises a speed detecting step of detecting a swing speed of the club head, and a club head passing through the sensor row. , Emitting light at a certain light emission interval, receiving reflected light from the club head for each light emission, and obtaining information on the club head passing through the sensor row, and processing the obtained information on the club head. And a display step of displaying on a display device, wherein the light emission interval is variable according to the speed of the club head measured by the speed detection step.

Further, the golf simulation apparatus of the present invention has a first sensor row arranged to detect the swing speed of the club head when the golf club is swung, and a first sensor row downstream of the first sensor row. Second and third sensor rows, which are sequentially arranged and include a light projector capable of emitting light to a passing club head at a predetermined light emission interval and a light receiver for receiving reflected light from the club head. A control means for specifying the light emission interval of the projectors of the second and third sensor rows according to the swing speed of the club head measured by the first sensor row; and the light emission interval specified by the control means. Extracted means for extracting the characteristics of the club head and the information of the face surface of the club head obtained by the extracted means are reproduced in the generated second and third sensor rows, respectively. Calculating means for, it is characterized by having a display means for displaying the information obtained by the calculation means.

[0009]

The projector of the sensor array for detecting the passage of the club head is caused to emit light at a constant light emission interval controlled according to the speed of the club head, and the reflected light from the club head for each light emission is detected and detected. Extract club head features from the signal. Since the light emission interval of the light projector changes according to the speed of the club head, it is possible to always extract the characteristics of the club head under the same condition even when the swing speed is extremely fast or slow.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. FIG. 1 is a diagram showing an overall configuration of a golf simulation device according to the present invention. Flat plate 1
A start sensor row S, a sensor row A, a sensor row B, and a sensor row C are arranged at predetermined intervals in a direction perpendicular to a reference line through which the head of the golf club passes. Among these sensor arrays, the sensor unit 1 has four start sensor arrays S and eight sensor arrays A to C.
0, which are arranged symmetrically with respect to the reference line.

Since the sensor unit 10 accurately measures the state of the club head in the sensor array, adjacent sensor units do not interfere with each other.
In addition, it is preferable to arrange them as close as possible in the direction perpendicular to the reference line. For this reason, for example, as shown in FIG. 2, each sensor unit 10 is arranged on a line orthogonal to the reference line, and a light projector 11 that emits light and both sides of the light projector 11 are arranged and emitted from the light projector. The light receiving device 12 detects the light reflected by the head. Each sensor unit is projectingly provided on a substrate 3 provided on a flat plate 1, and the substrate 3 is covered by a base plate 5 on which a reference line is drawn. Base plate 5
Is formed with a hole 7 for the projector and a hole 9 for the light receiver. Light emitted from the projector is projected onto the club head through the hole 7, and reflected light from the club head passes through the hole 9. Is detected by the light receiver 12.

The practitioner swings any club along the reference line or actually hits the ball. When actually hitting the ball, the ball is placed at a predetermined position on the reference line between the sensor rows AB or between the sensor rows BC, and when using an iron or wood, as shown in the figure, the ball is placed on the reference line as necessary. The tee 15 is inserted.

When the golf club is swung, the signals detected by the light receivers of the sensor units of the sensor arrays A to C are input to a control means (not shown), where predetermined data processing, calculation, etc. are performed. The state of the club head in each sensor row, head speed, etc. are displayed on the display device 20.

Next, when the club is swung, each sensor row detects the state of the club head and the like and displays it on the display device 20 according to the flow charts shown in FIGS. 3 to 5. explain.

First, by turning on the main switch of the device, the entire device is initialized (S1), and the measurement of the club head is started. When the measurement is started, the projector (LED) of the start sensor array S starts emitting light at the light emitting interval t'and the timer 1 starts (S2). The start sensor array S waits for the club head to pass within the set time of the timer 1 (S3, S3a). In this case, if the practitioner stops the swing before the club head passes the start sensor row S, the step of measuring the club head of the apparatus is completed when the timer 1 exceeds the set time.

When the start sensor array S detects the reflected light of the LED, it is determined whether the detection signal is passing through the club head, that is, whether the signal is noise (S4). This is because the club head has a start sensor row S.
This is because it is possible that the photodetector detects the signal due to dust or the like before passing through the optical path, and such noise needs to be removed. When it is determined in S4 that the club head has passed the start sensor row, the timer 2 starts (S5), the LED of the start sensor row S, which has been emitting light until then, is turned off, and the LED of the sensor row A is turned on. (S6). This is because when the start sensor row detects passage of the club head, the LED of the start sensor row S does not need to emit light, and the LED of the sensor row A needs to emit light until just before the club head passes through it. Because there is no. Therefore, the energy consumption of the battery is saved.

The sensor array A waits for the club head to pass within the set time of the timer 2 (S7, S7a). In this case, if the practitioner stops the swing before the club head passes the sensor row A, when the timer 2 exceeds the set time, the LED of the sensor row A is turned off (S
7b) and returns to the measurement start state (S2) again. On the other hand, when the sensor array A detects the reflected light of the LED, the S
Similar to step 4, it is determined whether or not the detection signal is passing of the club head (S8). When it is determined in S8 that the club head has passed the sensor array A, the sampling cycle is determined (S9).

Here, the sampling cycle of S9 will be described in detail. As described above, the state of the club head or the like is detected at each position of the sensor rows A, B, C of the apparatus shown in FIG. In this case, the LEDs of each sensor row emit light at intervals of μs, and when the club head passes the sensor row A at the light emission interval t, it is detected by the light receiver for each light emission. The time series of the signals
A detection signal pattern as shown in FIG. 6 is obtained. In this figure, as one sample, the pattern of the detection signal of the light receiver when the LED emits light 11 times is shown. As can be seen from this figure, in the first light emission of the LED, the light receivers in the lower two parts detect light,
In the second light emission of the LED, the light receivers of the lower five parts detect light, and in the third to seventh light emission of the LED, the light receivers of the eight parts detect light. .
Therefore, it can be seen that the face of the club head has passed the sensor array A in a state in which the face is inclined rightward from the direction perpendicular to the reference line, that is, the face is slightly open.

In this case, the number of times N the LED emits light corresponds to the length of the club head sampled in the swing direction. If N is set to a large value, the club head that has passed the pattern of the detection signal of the light receiver as it is. The shape corresponds to the shape. Therefore, the type of the swung club can be specified by taking a large N, but in the present embodiment, the number of times of light emission is 1 in order to save energy consumption.
1 is set. Normally, the club heads have different sole widths for irons and woods, so that the type of the swung club can be specified even if the number of times of light emission is reduced to some extent as in this embodiment. That is, FIG. 7 shows the detection signal pattern when the number of times of light emission of the LED is the same and the iron is swung, and the width of the sole is thinner than the detection signal pattern when the wood of FIG. 6 is swung. The width of the detection signal is narrow.
As is clear from this figure, it is clear that the iron passed considerably above the reference line.

By the way, when the same person swings the same club, the head speed greatly varies depending on the amount of swing. Therefore, if the light emission interval t is fixed, a large error will occur when the face surface is specified from the detection signal pattern shown in FIG. That is, the faster the swing, the smaller the amount of inclination of the face surface with respect to the direction perpendicular to the reference line. Also, the speed at which the club swings differs depending on the person, and if the light emission interval t is fixed, the shape of the club head to be sampled differs depending on the swing speed, and accurate measurement cannot be performed. That is, it is assumed that a person swings the wood to obtain the result shown in FIG. In this case, if a person having an extremely fast swing samples the same wood and the same light emission interval, the obtained detection signal pattern may have a shape as shown in FIG. 7, and an iron with a thin sole may be used. You may recognize that you have swung.

Therefore, by changing the light emission interval (sampling cycle) according to the swing speed, it is possible to always obtain the result under the same condition regardless of the swing speed.

The flow chart will be described again by returning to the flow chart.
As described above, in S9, the sampling cycle is determined. This cycle is determined based on the time when the club head passes the start sensor row S and passes the sensor row A, and this time is detected by the timer 2 in S5 to S8. That is, when the timer 2 detects that the club head speed is high, the light emission interval is determined to be short, and when the club head speed is detected to be low, the light emission interval is determined to be long. The club head data obtained for each light emission in the sensor array A is input for the predetermined number of times n1 of light emission (S10, S1).
1).

In S10 and S11, when the data is input by the number of times n1 of light emission, the timer 3 is started (S12), the LED of the sensor array A that has been emitting light at the light emission interval t until then is turned off, and the sensor array B is emitted. LED is turned on at the light emission interval t (S13). This is because, in the sensor array A, the LED of the sensor array A does not need to emit light when the sampling of the club head that has passed is finished, and the LED of the sensor array B does not need to emit light until just before the club head passes through it. Because. Therefore, the energy consumption of the battery is saved.

The sensor array B waits for the club head to pass within the set time of the timer 3 (S14, S14a).
In this case, if the trainee stops the swing before the club head passes the sensor row B, when the timer 3 exceeds the set time, the LED of the sensor row B is turned off (S14b), and the measurement is started again. Return to state (S2). On the other hand, when the sensor array B detects the reflected light of the LED,
Similar to S4 and S8, it is determined whether or not the detection signal is the passage of the club head (S15).

When the passage of the club head is detected in S15, the data is input for the predetermined number of times of light emission n2 as in S10 and S11 (S16, S17). Of course, this number of times of light emission may be the same as the number of times of light emission n1 in the sensor array A, but since the type of the club head swung in the sensor array A can be already specified, the sensor array B
In the sensor array C described later, the number of times of light emission may be reduced so that only the face portion is detected. With this structure, the energy consumption of the battery is further saved.

In S16 and S17, when the data is input for the number of times n2 of light emission, the timer 4 is started (S18), the LED of the sensor array B, which has been emitting light at the light emission interval t until then, is turned off, and the sensor array C is emitted. LED is turned on at the light emission interval t (S19). As a result, the energy consumption of the battery is saved as in the above.

The sensor array C waits for the club head to pass within the set time of the timer 4 (S20, S20a).
In this case, if the trainee stops the swing before the club head passes the sensor row C, when the timer 4 exceeds the set time, the LED of the sensor row C is turned off (S20b), and the measurement is started again. Return to state (S2). On the other hand, when the sensor array C detects the reflected light of the LED, it is determined whether or not the detection signal is the passage of the club head, as in S4, S8, and S15 (S21).

When the passage of the club head is detected in S21, data is input for the predetermined number of times of light emission n3 as in the above (S22, S2).
3). When the data is input for the number of times of light emission n3, the LED of the sensor array C is turned off (S24). of course,
As in the case of the sensor array B, the number of times of light emission can be changed as appropriate.

Next, noise and the like are removed from the data input in S10, S16, and S22, or signals generated by the ball hit by the club head in the sensor array C are removed, and the like. The input data is time-series processed to extract the characteristics of the club head as shown in FIGS. 6 and 7 (S2).
5, S26). Then, from the extracted characteristics of the club head, the face surface in each sensor row is recognized as shown in FIG. 8 (S27), and then the speed of the club head in each sensor row is recognized from the recognized face surface. Predetermined arithmetic processing is performed so as to obtain the speed of the sweet spot of the club head when hitting the ball, the deviation amount of the sweet spot (SS) from the reference line, and the like (S2).
8).

In this case, for example, as to the speed of the sweet spot of the club head, as shown in FIG. It can be accurately obtained by dividing the point P'in B by the difference from the detected time. Then, the calculation result as obtained in S28 is output to the display device 20 in the form shown in the display of FIG.
29), which completes one step. Of course, this display example is only an example, and in addition, the deviation amount of the sweet spot from the reference line in each sensor row is specifically displayed as a numerical value, or the sweet spot at the point where the ball is hit is displayed. It is also possible to display the amount of deviation and the orientation of the face surface at that point.

In the above-described embodiment, since the data is temporarily stored in each sensor row and then these stored data are processed and calculated, the memory used can be made small in capacity, and the calculation speed can be increased. Can be raised. Further, since the calculation is performed based on a plurality of detection signals for each sensor row,
The deterioration of the data processing system due to the noise of reflected light is prevented, and the measurement system is improved. Further, the sensor rows S, A-
The LED of C is turned on when necessary, otherwise it is OF
Since the state becomes F, the capacity of the battery can be reduced, and the size and weight of the device can be reduced.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be variously modified. For example, when processing the data obtained by each sensor array, the velocity and direction of the ball can be displayed if the signal of the ball is not removed. in this case,
As described above, since it is possible to specify the club that has been swung, it is possible to predict and display the flight distance. Especially, when putting with a putter, the direction, distance, and reference line It is also possible to display the amount of deviation from. Further, the process of processing the data may be performed at the stage when the data is taken in for each sensor row. Further, the golf simulation device shown in FIG. 1 is merely an example, and the number of sensor rows, the sensor units, and the configuration of the display device can be variously modified.

[0033]

As described above, according to the present invention,
The light emitters in the sensor row that detect the passage of the club head emit light at predetermined intervals, and the light emission interval changes according to the head speed based on the difference in swing speed, so even if the swing speed is different, accurate measurement results are always obtained. Can be obtained. Therefore, even if the putter, the iron, and the wood are used to swing at various speeds, the state of the face surface can be accurately grasped in each sensor row, and the practitioner can swing the golf club when swinging. The state of the club head can be accurately recognized.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a golf simulation device according to the present invention.

FIG. 2 is a diagram showing a configuration of a sensor unit used in the sensor array of the golf simulation device shown in FIG.

FIG. 3 is a flowchart showing an embodiment of a club head measuring method according to the present invention.

FIG. 4 is a flowchart showing a continuation of the flowchart shown in FIG.

5 is a flowchart showing a continuation of the flowchart shown in FIG.

FIG. 6 is a diagram showing a detection signal pattern in which the signal detected for each light emission of the light receiver is represented in time series when the wood is swung.

FIG. 7 is a diagram showing a detection signal pattern in which a signal detected for each light emission of the light receiver is represented in time series when the iron is swung.

FIG. 8 is a diagram showing detection signal patterns of the two sensor rows shown in FIG. 1, showing a state in which a face surface is specified.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Flat plate, 3 ... Substrate, 5 ... Base plate, 10 ... Sensor unit, 11 ... Emitter, 12 ... Photoreceiver, 20 ... Display device.

Claims (8)

[Claims] 1. A club head measuring method used in a golf simulation apparatus equipped with a sensor array for detecting movement of a club head when the golf club is swung, the method comprising a speed detecting step of detecting the speed of the club head. Emitting light at a certain light emission interval to the club head passing through the sensor row, receiving reflected light from the club head for each light emission, and obtaining information on the club head passing through the sensor row, A step of performing arithmetic processing on the obtained club head information and displaying it on a display device, wherein the light emission interval is variable according to the speed of the club head measured by the speed detecting step. And a club head measuring method. 2. By varying the light emission interval,
2. The club head measuring method according to claim 1, wherein information on the club head having a constant length in the swing direction is always obtained regardless of the speed of the club head passing through the sensor array. 3. A first sensor row arranged to detect the speed of the club head when the golf club is swung, and a club head which is sequentially arranged on the downstream side of the first sensor row and passes therethrough. A second and a third sensor row including a light projector capable of emitting light at a predetermined light emission interval and a light receiver for receiving the reflected light from the club head; and the first sensor row. Control means for specifying the light emission interval of the projectors of the second and third sensor rows according to the measured speed of the club head, and second and third sensors for which the light emission interval is specified by the control means. In each row, the extraction means for extracting the characteristics of the club head, the calculation means for calculating the information of the face surface of the club head obtained by this extraction means, and the information obtained by this calculation means are displayed. Golf simulation apparatus characterized by comprising display means for, the. 4. The number of times of light emission of the second and third sensor rows is limited to the number of times that the characteristics of the club head can be specified in the second and third sensor rows, respectively. The golf simulation device according to claim 3. 5. The ball impacted by the swung club is disposed on a reference line between the second sensor row and the third sensor row, and the third sensor row impacts the ball. The golf simulation device according to claim 3 or 4, wherein the information of (3) can be detected. 6. The extraction means is capable of identifying the type of club that has been swung, and is capable of detecting information on the impacted ball based on the identified club. The golf simulation device according to 1. 7. The ball impacted by the swung club is arranged on a reference line between the second sensor row and the third sensor row, and the arithmetic means is configured to operate on the second line.
7. The velocity of the sweet spot on the face surface passing between the sensor row and the third sensor row and / or the distance between the ball and the sweet spot when impacted can be calculated. The golf simulation device according to any one of 1. 8. The second sensor row starts emitting light based on a detection signal from the first sensor row, and the third sensor row based on a detection signal from the second sensor row. The golf simulation device according to claim 1, wherein the golf simulation device starts emitting light.