JPH05317480A - Diagnostic device for golf practice - Google Patents

Abstract

PURPOSE:To obtain a diagnostic device operating and indicating the diagnostic information by providing an operation means calculating at least the flying distance of a golf ball, based on the detected signal output from a shot sensor in response to the shot of a golf club. CONSTITUTION:A diagnostic device 1 is provided with an operation means inputting diagnostic informations such as at least the face angle of a golf club head, the swing path angle, the head speed, the flying distance of the ball, and the shot angle and calculating from respective detected signals of the golf club head transmitted from the buffer material 25 by means of shot detection sensors (a), (b), (c) if a shot measurer 2. When the diagnostic device 1 starts after the CPU 30 of processor 3 has finished the initially preset motion, it reads out a program means contained in PROM34 one after another and executes it. In this case, the input data to input device 31, 32 are contained in RAM35 and the diagnostic informations are operated by a specified operation way to output the indication informations on CRT36 in a format defined by the program means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf practice diagnosing device, and more particularly to measuring a hitting force and a direction of a golf club head swing by a hitting sensor to calculate diagnostic information including a flight distance and a launch angle of a golf ball. The present invention relates to a golf practice diagnostic device for displaying and a measuring instrument therefor.

[0002]

2. Description of the Related Art Conventionally, as a golf practice diagnosis apparatus, a golf practice machine for home use, which obtains motion information of a club head immediately before impact using a magnetic sensor, and a golf practice machine for business use, In addition to the operation information of the club head by the above-mentioned home golf training machine, information of the ball immediately after impact is detected by an infrared sensor to be calculated and displayed. Also, as a ball trajectory detection system, the course of a golf course is projected. There is one that displays and measures the player's simulation play and simulates and displays the ball flight trajectory from the course condition and the player's swing condition.

The operation information of the above club heads is stored in the sensor unit by a method of detecting a change in the magnetic resistance in the magnetic circuit when a magnetic substance such as an iron club passes directly above the magnetic sensor as a coil voltage. It is calculated and displayed by the microcomputer from the signal values obtained by the club head as a magnetic body passing over the four incorporated sensors.

Further, the information of the ball in the above is due to the characteristic change of the light receiving element caused by blocking the infrared ray of the ball by providing the infrared ray emitting section and the light receiving element group at the position where the ball opposes through the flight line. Obtained from the detection position.

[0005]

However, although the home golf practice machine can display the movement information of the club head immediately before the impact, it cannot calculate and display the trajectory of the ball, etc. There is an inconvenience that the operation information cannot be obtained unless the head passes directly above the magnetic sensor. In addition to the drawbacks of the commercial golf practice machine, in order to accurately measure the position of the ball immediately after the impact with the infrared sensor, the infrared light emitting part and the light receiving part provided at the position opposite to each other via the ball flight line are received. Since it is necessary to take a large area of the detection surface consisting of the element group and to arrange the light receiving elements densely, the cost increases and the selling price increases, so that an unmeasurable ball occurs due to the limitation of the detection surface area. Alternatively, if the number of light receiving elements is sparsely set and the detection surface is enlarged, there is a drawback that the measured values are rough and inaccurate. Further, since the ball is actually impacted and blown, a large area is required, or protective measures and protective equipment for preventing the danger of flying balls are required, resulting in high cost.

The ballistic detection simulation system is constructed as leisure equipment in which a video display system, a swing check VTR, and an acoustic system for extending the effect are integrated in addition to the arithmetic / display device used in (1). It is extremely expensive and requires a large space, so it can be used daily for home use, or it can be easily used at a low cost by using multiple golf machines for commercial use. It wasn't as appropriate.

The present invention has been made in view of the above-mentioned drawbacks and problems of the conventional apparatus, and it is possible to obtain an accurate swing angle,
It is an object of the present invention to provide an inexpensive and safe golf practice diagnosis device which obtains hit ball measured values and the like, and calculates and displays the measured values, evaluation of the measured values, and diagnostic information such as ball trajectory.

[0008]

In order to achieve the above object, a golf practice diagnosing device of the present invention has at least one impact sensor built-in, and can be impacted by a golf club and can move within a predetermined range by this impact. A hit detection member that is supported so that it is electrically connected to the hit sensor in the member, and at least the golf ball based on a detection signal output from the hit sensor in response to a hit by the golf club. And a calculating means for calculating a flight distance.

[0009]

When the hit detection member is hit by the golf club, the detection signals from the one or three sensors are sent to the calculation means. The calculation means calculates the flight distance and / or the launch angle of the golf ball based on this detection signal.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic view of an embodiment of a golf practice diagnosis apparatus according to the present invention. In FIG. 1, 1 is a golf practice diagnosis device, 2 is a batting measuring device, 3 is a processing unit, 4 is a unit, 9 is a power source, 19 is a cable connecting the batting measuring device 2 and the unit 4, 20 is an arm, and 21 is A support member for supporting the arm 20, 23 is a measurement surface as the other end of the arm on which the three impact sensors a, b, c are arranged, and 25 is a buffer member. The cable 19 also includes a power cable.

In FIG. 1, the golf practice diagnosis apparatus 1 is
One end is rotatably supported by the support member 21, and the other end 2
An arm 20 having at least three impact detection sensors a, b, c respectively provided at different positions on the three measurement surfaces.
And a base 28 for fixing the support member 21 for supporting the arm
A batting measuring device 2 including: a buffer member 25 that transmits a batting by a golf club head (see FIG. 2) 29 to the batting detecting sensors a, b, c; and batting detecting sensors a, b, c The impact detection sensors a, b,
c is a detection signal which detects the hit by the golf club head 29 transmitted from the buffer member 25,
At least the face angle of the golf club head 29,
A processing unit having a calculation means for inputting and calculating diagnosis information including a swing path angle, a golf club head speed, a golf ball flight distance, and a launch angle, and a display means for visually displaying the calculated diagnosis information. 3, a unit 4 including a power source 9 and a power source 9, a batting measuring instrument 2, a power source 9, and a processing unit 3
It is composed of a cable 19 for connecting the.

FIG. 2 is an enlarged view of the arm 20 shown in FIG. 1, and FIG. 2A is an enlarged view of the arm 20 seen from directly above.
2B is a cross-sectional view taken along line XX ′ of FIG. 2A. In FIG. 2A, 22 is a hitting position detection switch, and 26 is a hitting position. The arm 20 has one end rotatably fixed by the support member 21 and the shaft 22, and the other end (end on the sensor side) 2
Three impact detection sensors a, b, and c made of piezoelectric elements are planted at different positions on the measurement surface at equal intervals as shown in FIG. 2B on the measurement surface indicated by the line XX '. ing.
Although the piezoelectric element is used as the impact sensor in the embodiment, the invention is not limited to this, and a magnetic sensor may be used, for example.

A buffer member 25 is fitted on the measurement surface in order to prevent the sensors a, b and c from being damaged by the impact. The buffer member 25 is a member having durability and elasticity, for example,
It is made of plastic and directly receives the impact of the club head 29 due to the swing of the golf club and transmits the force and direction to the impact sensors a, b, c. The sensor-side end portion 23 of the arm is normally located at the striking position 26, and is rotated by the striking of the club head 29 (in the embodiment, it is not limited to this, but is limited to this), and the stopper is reached at 270 °. It is restrained at 27 and returns to the striking position again.

FIG. 3 is a block diagram showing a configuration example of the processing unit 3 of FIG. In FIG. 3, reference numeral 30 is a CPU as an arithmetic means and a control unit, 31 is an operation panel provided with operation buttons and switches (not shown), 32 is a data input unit from a time difference detection circuit (described later), and 33 is a peak. A data input section from a hold circuit (described later), 34 is a PROM storing a procedure (program means) for executing the operation of the diagnostic apparatus, 35 is a RAM as an internal memory, and 36 is a CRT as a display means. ..

When the diagnostic device 1 is started, the CPU 30 finishes the initial setting operation, and then sequentially reads and executes the program means stored in the PROM 34. In this case, the input data to the input units 31 and 32 are stored in the RAM 35, and the diagnostic information is calculated by a predetermined calculation method (described later),
The display information is output to the CRT 36 in a format defined by the above-mentioned program means (described later).

1. <Diagnosis Principle of Golf Practice Diagnosis Device> The CPU 30 calculates each diagnosis information based on the output voltages (waveforms) from the impact sensors a, b, and c based on the following relationships. [Relationship between diagnostic item and output waveform] Output voltage waveform of sensor a is x1, waveform of output voltage of sensor b is x2, sensor c
When the waveform of the output voltage of the club is x3, the face angle of the club; α = f (x1, x
2, x3) swing path angle of club; β = f (x1, x
2, x3) Head speed of club; V = f (x1, x
2, x3) Distance of the ball; L = f (x1, x
2, x3) Ball launch angle (left and right); θ ₁ = f (x1,
x2, x3) Ball launch angle (up and down); θ ₂ = f (x1,
x2, x3)

[ Example of Diagnostic Principle; Approximate Expression] When the peak voltage value E in the output waveforms x1, x2, and x3 and the time from the rising of the waveform to the peak value voltage are T, the output of the impact sensor a; E _A and time T _A , output of impact sensor b; E _B and time T _B , output of impact sensor c; E
_{When the} experiment was repeated for _C and time T _C , it was found that the following approximate expression holds when the positions and directions of the sensors a, b, and c are appropriately determined.

(A) Face angle of club; α
_{= K1 (T A -T B)} ( b) club swing path angle; β = k1 (T _A
−T _B ) + k2 (E _A −E _B ) (C) Club head speed; V = k3 (E _A
+ E _B + E _C ) (D) The distance traveled by the ball ； L = k4 (E _A
+ E _B + E _C) (e) launch angle of a ball (right and _{left); θ 1 = k5 (T} A
-T _B ) + k6 (E _A −E _B ) (F) Ball launch angle (up / down); θ ₂ = k6 {(T
_{A -T B) / (2-} T C)} where, K1-K6 are constants.

2. <Operation of Golf Practice Diagnosis Device> FIG. 4 is a flowchart showing the operation of the golf practice diagnosis device 1 of the present embodiment. The operation of the impact measuring device 2 will be described below with reference to FIG.

[0020] After Step 41 - 43] initial operation initialization (step 41), determines whether the self-diagnosis mode (step 42), if the self-diagnosis, the output of the striking sensor a; E _A and time T _A , output of impact sensor b; E _B
And time T _B , the output of the impact sensor c; 6 for E _C and time T _C
One input channel, the value of the voltage conversion value counter, and the flag for sending the time difference calculation value to the CPU 30 are set, and step 44 is executed (step 43). If it is not the self-diagnosis, step 44 is executed as it is.

[Steps 44-46] Test of Impact Position Detection Switch When the end portion 23 of the arm 20 is set to the impact position 26,
Since the hitting position detection switch 22 outputs a signal "H", it is judged whether the signal is "H" or not, and if it is not "H", a loop for waiting for setting the end 23 of the arm 20 to the hitting position 26 is entered, When the signal is "H", after about 100 mms, it is checked again whether the end portion 23 is really in the striking position. Therefore, if the signal is "H", it is not "H".
When the signal is "H", step 47 is executed in the set waiting loop at the striking position 26 at the end 23 of 0.

[Steps 47-48] Notification of striking preparation to the processing unit 3 After confirming the signal "H" of the striking position detection switch 22,
After performing PIO bit control as shown in the timing chart of FIG. 5, a status signal Read is issued as a batting preparation notification.
Send y. The processing unit 3 which has received the status signal Ready displays Ready on the display unit 36. Therefore, when the arm is returned to the striking position after the impact with the golf head 29, the processing section 3 can identify whether the signal is a striking signal by the striking position detection switch 22 even if there is any impact.

[Step 49] The processing section 3 causes the arm 20 to
After detecting that the end portion 23 is in the striking position 26, it is only necessary to poll whether the sensors a, b, c are hit. Specifically, the processing unit 3 checks only the I / O 1 bit, detects “L”, and outputs “L”.
When is detected (when hit), step 50W
When the AIT operation is performed and "L" is not detected, the batting wait loop is entered.

[Step 50] Impact detection and swinging of the WAIT golf club, and when the buffer member 25 fitted to the end portion 23 of the arm 20 is impacted (struck) by the club head 29, three positions are measured on the measurement surface. The provided piezoelectric elements a, b, c output a voltage according to the magnitude and direction of the impact with a certain time difference. In this case, the WAIT is necessary to stop the operation of the detection circuit (see FIG. 8) before the arm 20 is locked at the stopper position when the piezoelectric elements a, b, and c sense the hit by the golf head 29. It is a time constant. In other words, the impact when the arm 20 that rotates about the shaft 22 is locked at the stopper position by the impact is the next largest after the impact, and if the detection circuit detects the impact, the measurement error becomes large and the impact during the impact becomes large. Since it becomes difficult to perform measurement at the time of measurement, a certain time from the impact to the lock is set as WAIT. Then, when the WAIT has elapsed, the operation of the detection circuit is stopped.

[Steps 51-53] Reading and sending of peak hold value and time difference After WAIT, PIO bit count disable /
After setting the peak input disable bit to "L",
Hard logic from b, c to input part 31, 32 (Fig. 8)
The information of 6 channels which is held via is read all at once, and the peak value is read by the A / D converter 85 (FIG. 8).
To the CPU 3 via the bus 95.
Then, the time difference is sent from the counters 83 and 84 (FIG. 8) to the CPU 30 via the bus 95.

3. <Diagnostic Information Input Circuit> FIG. 6 is a waveform of the output voltage of each impact sensor at the time of impact.
In FIG. 6, Va, Vb, and Vc indicate peak voltages of the piezoelectric elements a, b, and c, and Ta, Tb, and Tc indicate peak delay times. FIG. 7 shows the peak voltage holding time of the piezoelectric elements a, b and c. After hitting with the golf head 29, a peak hold circuit as shown in FIG. 8 is used for several seconds shown as ta, tb and tc in FIG. Holds the peak voltage of hitting. Therefore, there is time to convert a plurality of analog signals into digital signals by using one A / D converter.

FIG. 8 shows a peak hold circuit and a time difference detection circuit combined with the peak hold circuit. In FIG. 8, 81 and 82 are peak hold circuits as the first input unit 31, 83 is an attenuator that reduces the voltage to 1 / n, 84 is a changeover switch, 85 is an A / D converter, and 91 and 92 are second Is a time difference detection circuit as the input unit 32, 93 and 94 are counters, and 95 is a bus.

In FIG. 8, the voltage input from the piezoelectric elements a, b, and c is branched, and the voltage input to the peak hold circuit 81 is squeezed by the attenuator 83, and the peak hold circuit 81 is changed to a low sensitivity peak hold circuit described later. To do. Further, the peak voltage held by the peak hold circuits 81 and 82 is converted to a digital signal by the A / D converter 85 while switching the plurality of analog signals by switching the peak hold circuit by the changeover switch 84 as described above. Output to 95.

Further, the time difference detection circuits 91 and 92 respectively input signals (voltages) from the peak hold circuits 81 and 82 as shown in FIG. 8, and when the peak hold circuit 81 side is read, the time difference detection circuit 91 side. When the peak hold circuit 82 side is read, the time difference detection circuit 92 side is read, and the magnitudes of the voltage values are respectively counted by the counters 93 and 94 as shown in FIG. ), The count is stopped and the minimum count value is subtracted from the maximum count value to obtain the count difference. On the other hand, since the time of 1 count is known in advance, the count number is divided by the count time to obtain the time difference. Can be asked.

FIG. 10 is an experimental example of a voltage waveform generated from a driver shot and a hit with a putter. According to the experiment, even if the impact of the driver shot is considered to be the strongest, the DF rises as shown in FIG. 10A when the voltage level input to the A / D converter 85 is set so that the bus 95 can read it as a digital value. Next, in the case of hitting with a putter, although the voltage was small, the OO increased as shown in FIG. 10B. On the other hand, if the voltage level is set so that the voltage due to the impact of the putter can be read, this time the driver will be saturated even if the driver strikes hard or weak, and only FF will rise. In other words, it turns out that there is a big difference in dynamic range.

Therefore, two peak hold circuits 81 and 82 having different sensitivities such as a pair 80 of peak hold circuits surrounded by a broken line in FIG.
As a result of switching by 4 and inputting to the A / D converter 85,
In the case of a driver shot, the output of the peak hold circuit 81 could be read, but the output of the peak hold circuit 82 could not be read. In the case of a shot with a putter, the output of the peak hold circuit 82 could be read, but the output of the peak hold circuit 81 could not be read. In other words, according to the pair 80 of the peak hold circuits, the output of either the driver shot or the shot by the putter can be read, so that the dynamic range of the A / D converter 95 is equivalently expanded to n times.

4. <Application Example (Display Example of Diagnosis Result)> FIG. 11 is a block diagram showing the configuration of an application example of the golf practice diagnosis apparatus according to the present invention. In FIG. 11, each block 110 to 167 is configured by a program means, and these program means are stored in the program storage means (for example, PROM) of the processing section as shown in FIG. It is sequentially executed by the CPU at startup. This application example will be described using the configuration of the golf practice diagnosis device 1 described above.

[Step 110] Display of Title and Menu When the golf practice diagnosis apparatus 1 is started, the title and steps 130, 140, 150 and 16 are displayed on the screen of the CRT 36.
A menu showing 0 and "End" is displayed.

[Step 120] Menu Selection The user selects a menu using the function keys (or keyboard, buttons, pointing device, etc.) on the input panel 31.

[Step 130] Shot Diagnosis In order to see and compare the performance of the club, the result of each stroke is displayed on the CRT 36 in the format shown in FIGS. 12 and 13.

[Steps 131 and 132] Input panel 3
Input the external input data such as the name of the practitioner, the club used, etc. from the keyboard (or OCR etc.) on 1.

[Step 133] Shot Diagnosis When the practitioner shots the end 23 of the arm 20 of the batting measuring instrument 2, the CPU 30 causes the CPU 30 to perform the operation shown in FIG. 4 (see 2. <Golf practice diagnosing apparatus operation>). The input information is obtained according to the above-mentioned principle (1.
<Diagnosis principle of golf practice diagnosis device>), the face angle of the club, the swing path angle of the club, the head speed of the club, the flight distance of the ball, the launch angle of the ball (left and right), and the launch angle of the ball as diagnostic information. Etc. and the trajectory of the ball are calculated and shown on the CRT 36 in FIG.
Display in the format shown in. The shot diagnosis can be repeatedly performed, and further, step 134 can be called by the function key of the operation panel 31 and executed. When shot diagnosis is completed, the process returns to step 120 and the menu is selected again. If the lower left frame of the screen shown in FIG. 12 is READY, a shot can be made. If the ball is ready, end 2 of arm 20
3 is returned to the striking position 26 and set to READY. Further, the trajectory of the ball is moved and displayed while leaving the trajectory of the ball. Then, when the ball stops, the numerical value at the bottom of the screen is displayed. The ball launch angle is not displayed when the flight distance is 150 yards or less.

[Step 134] Display of Shot Diagnosis Result This is executed as appropriate in Step 12, and a list of shot diagnosis results is displayed in the format shown in FIG. 13, and the process returns to Step 133. The display of the result can be viewed by moving the information on the screen in the forward order or the reverse order by the stroke operation.

[Step 140] Shot Practice In order to see and compare the results of shot practice, the result of each stroke is CR in the format shown in FIGS. 14 and 15.
Display at T36.

[Steps 141, 142] Input panel 3
1. Input the external input data such as the practitioner's name and club used from the keyboard above.

[Step 143] Display of Shot Practice Result The CPU 30 obtains the input information by the operation of FIG. 4 described above when the practitioner shots the end portion 23 of the arm 20, and based on the input information, the CPU 30 described above. Based on the principle of, the club face angle, club swing path angle, club head speed, ball flight distance, as diagnostic information,
The launch angle (left and right) of the ball, the launch angle of the ball, and the trajectory of the ball are calculated, and the result is shown in FIG.
It is displayed in the format shown in 4. Further, the shot practice can be repeatedly performed, and further, step 144 can be called and executed by the function key of the operation panel 31. When the shot practice ends, the process returns to step 120 and the menu is selected again. If the lower left frame of the screen shown in FIG. 14 is READY, a shot can be made. If the ball is ready, end 2 of arm 20
3 is returned to the striking position 26 and set to READY. Further, the trajectory of the ball is moved and displayed while leaving the trajectory of the ball. Then, when the ball stops, the numerical value at the bottom of the screen is displayed. The ball launch angle is not displayed when the flight distance is 150 yards or less.

[Step 144] Total display of shot practice results This is executed in a timely manner in step 14, the shot practice results are displayed in a list in the format shown in FIG. 15, and the process returns to step 143.

[Step 150] Putting Practice To see the results of the shot practice, the result of each stroke is shown in FIG.
It is displayed on the CRT 36 in the format as shown in FIG.

[Step 151] Display of Putting Practice Result When the practitioner shots the end 23 of the arm 20 with a putter, the CPU 30 obtains the input information by the operation of FIG. 4 described above, and based on the input information. According to the above-mentioned principle, the moving distance of the ball, the lateral shake, etc. are calculated, and
6 is displayed in the format as shown in FIG. Also, putting practice can be repeated. When the putt practice is completed, the process returns to step 120 and the menu is selected again.

[Step 160] Stroke Play A simulation course as shown in FIG.
It is displayed in 6 and the stroke is advanced for each shot, the result of shots and putters, the whereabouts of the ball are seen, and the score is given. The result of each stroke is C in FIG. 17 format.
Display on RT36.

[Step 161] Resumption of Stroke Play To resume the stroke play that was once interrupted, press the function key on the input panel 31,
Step 165 is executed.

[Steps 162, 163] Input panel 3
The name of the practitioner from the keyboard on 1, or OCR, etc.
Input external input data such as clubs used.

[Step 164] Selection of Play Format The play format is selected by the function key on the input panel 31 or the keyboard.

[Step 165] Stroke Play When the practitioner shots the end portion 23 of the arm 20, the CPU 30 obtains the input information by the operation of FIG. 4 described above, and based on the input information, the CPU 30 operates according to the above-described principle. , Club face angle, club swing path angle, club head speed, ball flight distance, as diagnostic information
The launch angle (left and right) of the ball, the launch angle of the ball, and the trajectory of the ball are calculated, and the result is shown in FIG.
The position of the ball is displayed on the course in the format shown in 7. When the stroke play has completed the entire course, step 167 is executed, and when the stroke play is interrupted at an intermediate hole, the ball position, score, and other calculated values up to that point are saved in step 166, and step 12 is executed.
Return to 0 and select the menu again.

[Step 167] Processing at the time of hole-out The trajectory of the ball in all courses, the flight distance for each course,
The calculated value, score, total score, etc. are displayed. After the display is completed, the process returns to step 120 and the menu is selected again.

Although one embodiment and one application example of the present invention have been described above, it is needless to say that the present invention is not limited to the above embodiment and various modifications can be made.

In the batting measuring device 2, the buffer member 25 has a substantially hemispherical shape of a golf ball as shown in FIG. 18, and is attachable to and detachable from the end portion 23. The cable 19 from each sensor a, b, c is the arm 2
It reaches the processing section 3 through the groove 20 a in 0 and the support member 21.

Further, as shown in FIG. 19, the supporting member 21 can change its height depending on whether it is a tee shot or not. In the figure, the support member 21 is composed of a cap member 21a and a support column 21b. The arm 20 and the like are attached to the cap member 21a.
It is detachably and rotatably fitted to 1b. Prop 2
1b is provided with grooves 21c and 21d having different heights, while a screw 21e is screwed into the cap member 21a.

To change the height, the screw 21e is used.
Is engaged with the groove 21c or 21d, the grooves 21c and 21d are formed so that the arm changing position is limited to the range of 30 ° as shown in FIG.

Further, as shown in FIG. 21, a first stopper member 21f is provided near the support member 21, and a second stopper member 21g is provided on a part of the outer periphery of the cap member 21a. When the arm 20 is rotated by approximately 90 ° in the direction of the arrow, the first and second stopper members start to engage and the brake is applied, and the braking force increases as the arm 20 rotates 90 ° or more. .. This can prevent unnecessary rotation of the arm 20.

The most interesting golf diagnostic information is the flight distance of the golf ball, and if only this is desired, only one sensor is required. Further, the buffer member does not necessarily have to be removable from the arm,
For example, the sensor may be formed integrally with the sensor. Then, instead of the arm, a string or the like may be simply connected to the member.

22 and 23 show a modification of the impact measuring instrument, in which 30 is a buffer member detachably (or integrally) formed at one end of the arm 31, and the other end of the arm 31 is supported by the column 32. It is rotatably attached to the horizontal bar 33. Three impact sensors 34 to 36 are attached to the back surface of one end of the arm 31. Reference numeral 37 denotes a printed circuit board provided on the back surface of the arm 31. One end of a conductor line 38 formed on the substrate is connected to each sensor and the other end is connected to a contact plate 39. Each contact plate 3
9 is slidably in contact with each of the terminal plates 40 provided on the horizontal bar 33, and the lead wire 41 from each terminal plate 40 is connected to the unit.

Further, in the present invention, the method of calculating the diagnostic information in the processing section is not limited to the above approximate expression, and a necessary table is prepared in advance from various experimental data concerning the detection signal from the sensor and the flight distance. It is also possible to obtain the more accurate diagnostic information based on this, or based on this, or based on this and the approximate expression.

[0059]

As described above, according to the present invention, the impact of the golf club head is transmitted to the respective impact sensors by the buffer member, and the calculating means detects at least the golf club head from the detection signals of the impact sensors. Since the diagnostic information including the face angle, the swing path angle, the golf club head speed, the golf ball flight distance, and the launch angle is calculated and the diagnostic information is displayed by the display means, the swing angle and the hit ball measured value are accurate. Etc., the measured values, evaluation of the measured values, and diagnostic information such as the ball trajectory can be calculated and displayed. In addition, since it does not require a large space, it can be easily installed and can be provided at low cost. Also, it is safe because it does not fly directly.

[Brief description of drawings]

FIG. 1 is a schematic view of an embodiment of a golf practice diagnosis device according to the present invention.

FIG. 2 is an enlarged view of an arm portion shown in FIG.

FIG. 3 is a block diagram showing a configuration example of a processing unit in FIG.

FIG. 4 is a flowchart showing an operation of the golf practice diagnosis device in the present embodiment.

FIG. 5 is a timing chart of PIO bit control.

FIG. 6 is a waveform example of the output voltage of each impact sensor during impact.

FIG. 7 is an explanatory diagram showing a holding period of a peak voltage.

FIG. 8 is a peak hold circuit and a time difference detection circuit combined with the peak hold circuit.

FIG. 9 is an explanatory diagram of a difference between count values in the time difference detection circuit.

FIG. 10 is an experimental example of a voltage waveform generated from a driver shot and a hit with a putter.

FIG. 11 is a block diagram showing a configuration of an application example of a golf practice diagnosis device according to the present invention.

FIG. 12 is a format example of a shot diagnosis screen.

FIG. 13 is a format example of a shot diagnosis result screen.

FIG. 14 is a format example of a shot practice screen.

FIG. 15 is a format example of a shot practice result screen.

FIG. 16 is a format example of a putt practice screen.

FIG. 17 is a format example of a stroke play screen.

FIG. 18 is a perspective view showing a buffer member and an arm support member.

FIG. 19 is a cross-sectional view showing the structure of a support member.

FIG. 20 is a diagram showing a method of changing the height of the support member.

FIG. 21 is a view showing a stopper member.

FIG. 22 is a perspective view showing a modification of the impact measuring device.

FIG. 23 is a view showing a modified example of the impact measuring device.

[Explanation of symbols]

 1 Golf Practice Diagnostic Device 20 Arm 23 Other End 25 Buffer Member 30 CPU (Calculation Means) 36 CRT (Display Means) a, b, c Impact Detection Sensor

Claims (7)

[Claims] 1. Built-in at least one percussion sensor,
A hit detection member supported by a golf club so as to be hit and movable by a predetermined range by the hit and an hit sensor in the member are electrically connected to the hit detection member in response to the hit by the golf club. A golf practice diagnosis apparatus comprising: a calculating unit that calculates at least a flight distance of a golf ball based on a detection signal output from a sensor. 2. Built-in at least three impact sensors,
A hit detection member supported by a golf club so as to be hit and movable by a predetermined range by the hit and an hit sensor in the member are electrically connected to the hit detection member in response to the hit by the golf club. A golf practice diagnosing device comprising: a calculating unit that calculates at least a flight distance and a launch angle of a golf ball based on a detection signal output from a sensor. 3. An arm having at least three impact sensors, one end of which is rotatably supported and the other end of which is provided at different positions, and a golf club head for each of the impact sensors. The golf practice diagnosis device according to claim 1 or 2, further comprising: a buffer member that transmits a hit by the player. 4. The buffer member has a predetermined elasticity,
The golf practice diagnosis device according to claim 3, wherein the other end of the arm is detachably formed. 5. The golf practice diagnosing device according to claim 1 or 2, further comprising display means for displaying diagnostic information obtained by the computing means. 6. The golf practice diagnosing device according to claim 3, wherein the height of the arm is adjustable in at least two stages. 7. A stopper member for limiting a rotation angle of the arm within a predetermined range.
The golf practice diagnosis device described in.