EP0572158A1 - Vorrichtung zum Analysieren und zum Üben des Golfschlags - Google Patents

Vorrichtung zum Analysieren und zum Üben des Golfschlags Download PDF

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Publication number
EP0572158A1
EP0572158A1 EP93303858A EP93303858A EP0572158A1 EP 0572158 A1 EP0572158 A1 EP 0572158A1 EP 93303858 A EP93303858 A EP 93303858A EP 93303858 A EP93303858 A EP 93303858A EP 0572158 A1 EP0572158 A1 EP 0572158A1
Authority
EP
European Patent Office
Prior art keywords
shot
golf
ball
arm
diagnosing apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP93303858A
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English (en)
French (fr)
Inventor
Tadashi Kaiba
Shuusei Murai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Digital Painting Co Ltd
Original Assignee
LAC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LAC Corp filed Critical LAC Corp
Publication of EP0572158A1 publication Critical patent/EP0572158A1/de
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/0073—Means for releasably holding a ball in position; Balls constrained to move around a fixed point, e.g. by tethering
    • A63B69/0091—Balls fixed to a movable, tiltable or flexible arm
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/36—Training appliances or apparatus for special sports for golf

Definitions

  • the present invention relates to a golf training diagnosing apparatus, and in particular to a golf training diagnosing apparatus and a measuring instrument used therefor, in which striking force applied by a swing of a golf club head, direction thereof, etc. are measured by means of a shot sensor and diagnosis information including the flight of a golf ball and the ball drive angle is calculated and displayed.
  • Information on the movement of the club head for (1) and (2) described above is obtained by calculation by means of a microcomputer, starting from values of signals obtained by the fact that the club head acting as a magnetic body passes over four sensors incorporated in a sensor unit by a method, by which variations in magnetic resistance within a magnetic circuit are detected in the form of a coil voltage, when the magnetic body such as an iron club, etc. passes directly above the magnetic sensors, and the information thus obtained is displayed.
  • the home golf training apparatus described in (1) can display information on movement of the club head directly before impact, it can neither calculate nor display the trajectory of the ball, etc. Further it has an inconvenience that no information on the movement can be obtained, unless the club head passes directly above the magnetic sensors.
  • the business golf training apparatus has, in addition to the drawback of (1), a drawback that, since the area of the detection surface consisting of the infrared ray generating section and the group of photosensitive elements disposed at the position opposite to the ball through the flight trajectory thereof should be great and it is necessary to arrange the photosensitive elements with a high density in order to measure the position of the ball directly after impact with a high precision by using the infrared ray sensor, which increases the fabrication cost and the sale price, if the area of the detection surface is restricted, the measurement cannot be effected for some balls and on the contrary, if the detection surface is enlarged while decreasing the density of the photosensitive elements, the measurement becomes rough and measured values are less precise. Further, since an impact is given really to the ball to make it fly, a large area is necessary or protecting measures or protecting installations are necessary in order that nobody is exposed to danger by a flying ball. Therefore it has a drawback that cost is increased.
  • the simulation system for detecting the trajectory of the ball indicated in (3) is constructed as a leisure installation, in which apart from e.g. the calculation/display device used in (2), a VTR for checking swings, and an audio system for producing effect are unified. Since cost therefor is extremely high and a satisfactorily large space is necessary, it is not suitable as a diagnosing apparatus, which can be used usually for home use or with ease at a low cost by disposing a plurality thereof in parallel in a golf course, etc. for business.
  • the present invention has been done in view of the drawbacks and the problematical points described above of the prior art apparatuses and the object thereof is to provide a cheap and safe golf training diagnosing apparatus, by which swing angles, measured values of a flying ball, etc. are obtained and which calculates and displays diagnosis information such as the measured values, evaluation of the measured values, the trajectory of the ball, etc.
  • a golf training diagnosing apparatus is characterized in that it comprises a shot detecting member incorporating at least one shot sensor and supported so as to be shot by a golf club and movably by this shot in a predetermined extent and calculating means connected electrically with the shot sensor in the member described above, which calculates at least a flight of a golf ball on the basis of a detection signal outputted by the shot sensor, responding to a shot by the golf club.
  • the calculating means calculates the flight of the golf ball or a ball drive angle on the basis of these detection signals.
  • Fig. 1 is a schematical diagram of an embodiment of the golf training diagnosing apparatus according to the present invention, in which reference numeral 1 is a golf training diagnosing apparatus; 2 is a shot measuring instrument; 3 is a processing section; 4 is a unit; 9 is a power supply; 19 is a cable connecting the shot measuring instrument 2 with the unit 4; 20 is an arm; 21 is a supporting member supporting the arm 20; 23 is a measurement surface, which is a free end of the arm and on which three shot sensors a, b, and c are disposed; and 25 is a buffer member.
  • the cable 19 includes a power supplying cable.
  • the golf training diagnosing apparatus 1 is composed of the shot measuring instrument 2 consisting of the arm 20, one end of which is supported rotatably by the supporting member 21 and which has at least three shot detecting sensors a, b and c disposed at different positions on the measurement surface 23 at the other end and a plinth 28 for fixing a supporting member 21 supporting the arm, the buffer member 25 transmitting a shot given by a golf club head 29 (cf. Fig.
  • the shot detecting sensors a, b and c 2) to the shot detecting sensors a, b and c; calculating means connected electrically with the shot detecting sensors a, b and c and calculating diagnosis information including at least the face angle of the golf club head 29, the swing path angle, the head speed of the golf club, the flight of the golf ball and the ball drive angle, starting from inputted detection signals obtained by detecting a shot by the golf club head 29 transmitted by the buffer member 25; the unit 4 including the processing section 3 having display means displaying visually the diagnosis information after calculation and the power supply 9; and the cable 19 connecting the shot measuring instrument 2, the power supply 9 and the processing section with each other.
  • Figs. 2A and 2B are enlarged diagrams of the arm indicated in Fig. 1, Fig. 2A being an enlarged diagram of the arm 20 viewed directly from above, Fig. 2B being a cross-sectional view thereof along an X-X' line in Fig. 2A.
  • 22 is a shot position detecting switch and 26 represents a shot position.
  • One end of the arm 20 is supported rotatably by the supporting member 21 and a shaft 22 and the three shot detecting sensors a, b and c consisting of piezoelectric elements are implanted with a constant interval at different positions on the measurement surface indicated by the X-X' line at the other end (end portion on the sensor side), as indicated in Fig. 2B.
  • piezoelectric elements are used for the shot sensors in the present embodiment, they are not restricted thereto, but e.g. magnetic sensors may be used therefor.
  • the buffer member 25 is fitted to the measurement surface.
  • the buffer member 25 is made of a material having durability and elasticity, e.g. plastic material, which is subjected directly to a shot of the club head 29 by swing of the golf club and transmits the force and the direction thereof to the shot sensors a, b and c.
  • the end portion 23 on the sensor side of the arm is normally at the shot position 26 and rotated by a shot by the club head 29 (in the embodiment it is rotated clockwise, but it is not restricted thereto). When it is rotated by 270°, it is suppressed by a stopper 27 and returned again to the shot position.
  • Fig. 3 is a block diagram indicating an example of construction of the processing section 3.
  • reference numeral 30 is a CPU acting as the calculating means and a control section;
  • 31 is an operation panel, on which operation buttons, switches, etc. (not indicated in the figure) are mounted;
  • 32 is an input stage, through which data from a time difference detecting circuit (stated later) are inputted;
  • 33 is an input stage, through which data from a peak hold circuit (stated later) are inputted;
  • 34 is a PROM, in which a procedure (program means) for executing various operations of the present diagnosing apparatus is stored;
  • 35 is an RAM serving as an interval memory; and
  • 36 is a CRT acting as display means.
  • the diagnosing apparatus 1 When the diagnosing apparatus 1 is started, after the CPU 30 has terminated its initial setting operation, it reads out the program means stored in the PROM one after another. In this case, data inputted through the input stages 31 and 32 are stored in the RAM 35; diagnosis information is calculated according to a predetermined calculation method (stated later); and information to be displayed is outputted by the program means described above to the CRT 36 in a predetermined format (stated later).
  • the CPU 30 calculates various diagnosis information by using following relationships on the basis of output voltages (waveforms) from the shot sensors a, b and c.
  • Fig. 4 is a flow chart indicating the operation of the golf training diagnosing apparatus 1 according to the present embodiment.
  • Step 42 After the initial setting (Step 41), it is judged whether the mode is self-diagnostic or not (Step 42).
  • a flag is set for transmitting six input channels for the output of the shot sensor a; E A and time T A , the output of the shot sensor b; E B and time T B , and the output of the shot sensor c; E C and time T C , as well as the value of the voltage converting counter and the time difference calculation value to the CPU 30 (Step 43) to execute Step 44.
  • Step 44 is executed directly.
  • the shot position detection switch 22 emits a signal "H". Then it is judged whether the signal is "H" or not. In the case where it is not "H", the procedure enters a loop, where the end portion 23 of the arm 20 waits to be set at the shot position 26. On the contrary, in the case where the signal is "H”, in order to confirm again after about 100ms whether the end portion 23 is really at the shot position, it is judged whether the signal is "H" or not. In the case where the signal is not "H”, the procedure enters a loop, where the end portion 23 of the arm 20 waits to be set at the shot position 26, and in the case where the signal is "H", Step 47 is executed. [Steps 47 to 48] Notice of shot preparation to the processing section 3
  • the piezoelectric elements a, b and c disposed at three positions on the measurement surface output voltages depending on the magnitude and the direction of the shot with some time differences.
  • WAIT is a time constant necessary for stopping the detecting circuit (cf. Fig. 8) before the arm 20 is locked at the stopper position, when the piezoelectric elements a, b and c sense the shock given by the club head 29.
  • the shock at the lock when the arm 20 rotated around the shaft 22 by the shot is locked at the stopper position, is the greatest next to that produced at the shot, measurement errors are great, if the shock is detected by the detecting circuit, and therefore measurement at the shot is difficult, a predetermined part of the period of time from the shot to the lock is set as WAIT.
  • the operation of the detecting circuit is interrupted in the lapse of the WAIT.
  • Fig. 6 shows waveforms of the output voltages from the different shot sensors at the shot.
  • Va, Vb and Vc represent peak voltages of the piezoelectric elements a, b and c, respectively, and t a , t b and t c represent peak delay times therefor.
  • Fig. 7 shows peak voltage hold times for the piezoelectric elements a, b and c.
  • the peak voltages of the shot are deferred in several seconds indicated by t a , t b and t c in Fig. 6 after the shot by the club head 29 by peak hold circuits as indicated in Fig. 8. In this way there is marginal time for converting a plurality of analogue signals into digital signals by means of an A/D converter while switching over them.
  • Fig. 8 shows peak hold circuits and time difference detecting circuits combined with the peak hold circuits, in which reference numerals 81 and 82 are peak hold circuits acting as the first input stage 31; 83 is an attenuator, which attenuates the voltage to 1/n; 84 is a switch; 85 is an A/D converter; 91 and 92 are time difference detecting circuits acting as the second input stage 32; 93 and 94 are counters; and 95 is a bus.
  • Fig. 8 voltages inputted from the piezoelectric elements a, b and c are bifurcated into two.
  • the voltage inputted to the peak hold circuit 81 is attenuated by the attenuator 83 so that the peak hold circuit 81 acts as a low sensitivity peak hold circuit.
  • analogue signals represented by peak voltages held by the peak hold circuits are converted into digital signals, while switching them by means of the switch 84, which digital signals are outputted to the bus 95.
  • the respective signals are inputted from the peak hold circuits 81 and 82 to the time difference detecting circuits 91 and 92 as indicated in Fig. 8.
  • the time difference detecting circuit 91 side is read
  • the time difference detecting circuit 92 side is read.
  • the counters 93 and 94 count the magnitudes of the respective voltage values as indicated in Fig. 9. The counting is stopped at a point of time, where the count values are constant (minimum). Differences of the count are obtained by subtracting the minimum count values from the maximum count values. On the other hand, since a period of time corresponding to one count is known previously, the time differences can be obtained by dividing the count numbers by the count times.
  • Fig. 10 shows an experimental example on the waveform produced by a driver shot and a knock by a putter.
  • the voltage level inputted to the A/D converter 85 was set so that it could be read out as a digital value to the bus 95, DF was increased as indicated in Fig. 10.
  • DF was increased as indicated in Fig. 10.
  • OO was increased as indicated in Fig. 10.
  • the voltage level is set so that the voltage due to the knock by the putter is read out, the signal is saturated, independently from whether the buffer member is shot strongly or weakly by the driver, the signal is increased only to FF. In other words, it was understood that there is a great difference in the dynamic range.
  • Fig. 11 is a block diagram indicating the construction of an example of application of the golf training diagnosis apparatus according to the present invention.
  • each block 110 to 167 is constructed by program means.
  • program means are stored in program storing means (e.g. PROM) in the processing section as indicated in Fig. 3 and executed one after another by the CPU at the start of the golf training diagnosing apparatus.
  • program storing means e.g. PROM
  • the present example of application will be explained by using the construction of the golf training diagnosing apparatus 1 described previously.
  • Step 120 Menu selection
  • a user selects a menu by using function keys (or a keyboard, buttons, etc.) on an input panel 31.
  • function keys or a keyboard, buttons, etc.
  • results of each shot are displayed on the CRT 36, using a format as indicated in Fig. 12 or 13. [Steps 131 and 132]
  • the CPU 30 obtains inputted information by the operation (cf. 2. ⁇ Operation of the golf training diagnosing apparatus>) indicated in Fig. 4 described previously by the fact that the trainee shoots the end portion 23 of the arm 20 in the shot measuring instrument; calculates the face angle of the club, the swing path angle of the club, the head speed of the club, the flight of the ball, the ball drive angle (horizontal), the ball drive angle (vertical), etc. as well as the trajectory of the ball as diagnosis information by the principle described previously (cf. 1. ⁇ Diagnosis principle of the golf training diagnosing apparatus>) on the basis of the inputted information; and displays them on the CRT 36 in a format as indicated in Fig. 12. Further the shot diagnosis can be effected repeatedly. In addition, it can be effected by calling Step 134 by means of function keys on the operation panel 31. When the shot diagnosis is terminated, the procedure returns to Step 120 and a new menu is selected.
  • Shot diagnosis results are appropriately displayed by Step 12. They are displayed in the form of a list in the format indicated in Fig. 13 and the procedure returns to Step 133. The display of the results can be viewed while moving forward or backward information on the screen by stroke manipulation. [Step 140] Shot training
  • results of each shot are displayed on the CRT 36 in the form indicated in Figs. 14 and 15. [Steps 141 and 142]
  • the CPU 30 obtains inputted information by the operation indicated in Fig. 4 described previously by the fact that the trainee shoots the end portion 23 of the arm 20, calculates the face angle of the club, the swing path angle of the club, the head speed of the club, the flight of the ball, the ball drive angle (horizontal), the drive angle (vertical), etc. as well as the trajectory of the ball as diagnosis information by the principle described previously on the basis of the inputted information; and displays them on the CRT 36 in a format as indicated in Fig. 12. Further the shot diagnosis can be effected repeatedly. In addition, it can be effected by calling Step 144 by means of function keys on the operation panel 31. When the shot training is terminated, the procedure returns to Step 120 and a new manu is selected.
  • Shot diagnosis results are summed and appropriately displayed by Step 14. They are displayed in the form of a list in the format indicated in Fig. 15 and the procedure returns to Step 143. [Step 150] Putt training
  • the CPU 30 obtains inputted information by the operation indicated in Fig. 4 described previously by the fact that the trainee shoots the end portion 23 of the arm 20, calculates the length of movement of the ball, transversal deviations, etc. by the principle described previously on the basis of the inputted information; and displays them on the CRT 36 in a format as indicated in Fig. 16. Further the putt training can be effected repeatedly. When the putt training is terminated, the procedure returns to Step 120 and a new menu is selected. [Step 160] Stroke play
  • a simulation course as indicated in Fig. 17 is displayed on the CRT 36 and an image of the ball is advanced for every stroke. Results of the shot or the putt and whereabouts of the ball are examined and marks are given them. Results of every stroke are displayed on the CRT 36 in a format indicated in Fig. 17. [Step 161] Restart of stroke play
  • Step 165 In the case where the trainee wishes to restart an interrupted stroke play, he pushes function keys on the input panel 31 to execute Step 165. [Steps 162 and 163]
  • Step 164 Selection of form of play
  • the CPU 30 obtains inputted information by the operation indicated in Fig. 4 described previously by the fact that the trainee shoots the end portion 23 of the arm 20; calculates the face angle of the club, the swing path angle of the club, the head speed of the club, the flight of the ball, the ball drive angle (horizontal), the ball drive angle (vertical), etc. as well as the trajectory of the ball as diagnosis information; and displays the position of the ball on the course in the format as indicated in Fig. 17 on the CRT 36.
  • Step 167 is executed and when the play is interrupted at a hole on the way, the position of the ball, scores and other calculated values upto that point are stored at Step 166. Then the procedure returns to Step 120 and a new menu is selected.
  • Step 167 Disposition at hole-out
  • the buffer member 25 is nearly a half of a golf ball, i.e. it is approximately hemi-spherical, as indicated in Fig. 18, and mounted detachably on the end portion 23.
  • the cable 19 from the different sensors a, b and c passes through the groove 20a in the arm 20 and the supporting member 21 to arrive at the processing section 3.
  • the supporting member 21 is so constructed that its height can be varied, depending on whether it is a tee-shot or not, as indicated in Figs. 19A and 19B.
  • the supporting member 21 consists of a cap member 21a and a pillar 21b and the arm 20 described above, etc. are mounted on the cap member 21a and the pillar 21b is inserted therein so that the cap member 21a is rotatable and dismountable.
  • Two grooves 21c and 21d having different heights are formed in the pillar 21b and on the other hand a screw 21e is screwed in the cap member 21b.
  • the change in the height is effected by changing the groove 21c or 21d, with which the screw 21e is engaged.
  • the grooves 21c and 21d described above are formed so that change in the arm height can be effected at an angle within an extent of 30°, as indicated in Fig. 20.
  • a first stopper member 21f is disposed in the neighborhood of the supporting member 21 and a second stopper member 21g is disposed in a part of the outer periphery of the cap member 21a.
  • the first and the second stopper member begin to be engaged with each other to brake the arm and they are so constructed that braking force increases with increasing rotation angle over 90°. In this way it is possible to prevent unnecessary rotation of the arm 20.
  • a matter of primary concern as golf diagnosing information is the flight of the golf ball. In the case where it is desired to know only the flight, one sensor may be sufficient.
  • the buffer member is not necessarily dismountable from the arm.
  • they may be formed in one body, in which the sensors are incorporated.
  • the member stated above may be bound only with strings, etc.
  • Figs. 22 and 23 show a modified example of the shot measuring instrument, in which 30 represents a buffer member formed detachably (or in one body) at one end of an arm 31 and the other end of the arm 31 is mounted rotatably on an horizontal bar 33 supported by a supporter 32.
  • Three shot sensors 34 to 36 are mounted on the back surface of the one end of the arm 31 stated above.
  • 37 is a print board disposed on the back surface of the arm 31.
  • One end of each of conductor lines 38 formed on the print board is connected with each of the sensors and the other end thereof is connected with a contact plate 39.
  • Each of contact plate 39 is contacted slidably with each of the terminal plates 40 and lead wires 41 from different terminal plates 40 are connected with the unit described previously.
  • the method for calculating diagnosis information in the processing section according to the present invention is not restricted to the approximation formulas described previously. Instead thereof, necessary tables are prepared previously on the basis of various experimental data on the detection signals from the sensors and the flight, etc. and more precise diagnosis information may be obtained on the basis thereof or on the basis of the approximation formulas together therewith.
  • the calculating means calculates diagnosis information including at least the face angle of the golf club head, the swing path angle, the head speed of the golf club, the flight of the golf ball, and the ball drive angles from detection signals from the different shot sensors, and displays the diagnosis information by the display means, it is possible to obtain the swing angle, measured values on the shot ball, etc. and to calculate and display diagnosis information such as these measured values, evaluation of the measured values, the trajectory of the ball, etc. Further, since it requires no large space, an apparatus, which can be installed easily and is cheap, is provided. In addition, since no ball flies really, it is safe.
  • flight refers to the total linear displacement of the ball for a given simulated trajectory.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)
EP93303858A 1992-05-25 1993-05-19 Vorrichtung zum Analysieren und zum Üben des Golfschlags Withdrawn EP0572158A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4157424A JPH05317480A (ja) 1992-05-25 1992-05-25 ゴルフ練習診断装置
JP157424/92 1992-05-25

Publications (1)

Publication Number Publication Date
EP0572158A1 true EP0572158A1 (de) 1993-12-01

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Application Number Title Priority Date Filing Date
EP93303858A Withdrawn EP0572158A1 (de) 1992-05-25 1993-05-19 Vorrichtung zum Analysieren und zum Üben des Golfschlags

Country Status (6)

Country Link
EP (1) EP0572158A1 (de)
JP (1) JPH05317480A (de)
KR (1) KR940005300A (de)
AU (1) AU3876393A (de)
CA (1) CA2095974A1 (de)
ZA (1) ZA933327B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017189491A (ja) * 2016-04-15 2017-10-19 セイコーエプソン株式会社 表示方法、スイング解析装置、スイング解析システム、スイング解析プログラム、および記録媒体
CN110682178A (zh) * 2019-10-30 2020-01-14 东莞亿诚精密模具有限公司 一种高尔夫球头打击面加工方法
JP7390073B1 (ja) * 2022-11-24 2023-12-01 有限会社ライフショップ小すげ ゴルフショット練習機

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3636515A1 (de) * 1986-10-27 1988-04-28 Runar Grenfeldt Golf-heimtrainer
US4775948A (en) * 1987-01-08 1988-10-04 Monogram Models, Inc. Baseball having inherent speed-measuring capabilities
US4848769A (en) * 1987-07-28 1989-07-18 Golfore Ltd. Golf game apparatus
EP0376846A2 (de) * 1988-12-27 1990-07-04 Sony Corporation Golfsimulator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3636515A1 (de) * 1986-10-27 1988-04-28 Runar Grenfeldt Golf-heimtrainer
US4775948A (en) * 1987-01-08 1988-10-04 Monogram Models, Inc. Baseball having inherent speed-measuring capabilities
US4848769A (en) * 1987-07-28 1989-07-18 Golfore Ltd. Golf game apparatus
EP0376846A2 (de) * 1988-12-27 1990-07-04 Sony Corporation Golfsimulator

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Publication number Publication date
JPH05317480A (ja) 1993-12-03
CA2095974A1 (en) 1993-11-26
KR940005300A (ko) 1994-03-21
AU3876393A (en) 1993-12-02
ZA933327B (en) 1994-09-16

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