JPH0544312B2 - - Google Patents

Description

[Detailed description of the invention]

<Industrial Field of Application> The present invention is applicable to golfers during a golf round, etc.
This invention relates to a pocket-type micro-electronic golf swing training device that can easily measure the inclination direction and inclination angle of the face of a golf club with respect to a golf ball anywhere. <Problems to be Solved by the Invention> The inclination direction of the face of a golf club and the inclination angle of the face with respect to the golf ball are related to the flight direction (slice or hook) of the golf ball, and are of great interest to golfers. is high. However, the currently commercialized products are large and inconvenient to carry, so they can only be used in specific locations. Therefore, there is a need for a pocket-sized, ultra-compact electronic golf swing training device that can easily confirm the inclination direction and inclination angle of the face of the golf club with respect to the golf ball during a golf round. <Means for Solving the Problems> The electronic golf swing training device of the present invention includes a pocket-sized infrared transmitter/receiver for detecting the golf swing position and a repeater attached near the golf club head. The transmitter/receiver includes an infrared light emitting element that emits infrared light to the repeater, an infrared light receiving element that receives a signal via the repeater, an LSI that processes the received light signal, and displays and reports data. The electronic circuit is integrated into an integrated circuit and miniaturized. The repeater includes an infrared light receiving element, an operational amplifier, a delay circuit, a current amplification section, a power supply stabilization circuit section, an infrared light emitting element, and a button type battery. By making the electronic circuit part an integrated circuit and miniaturizing it, it can be built into the golf club head or attached to the club shaft. In particular, the light emission signal of the infrared light emitting element of the transmitter/receiver is received by two separately provided infrared light receiving elements via a repeater, and the light reception time of each is compared using an integrated circuit element. , the inclination direction and the inclination angle of the face of the golf club in the impact area are calculated. <Example> The present invention will be described below with reference to the drawings. FIG. 1 shows how a transmitter/receiver and a repeater, which are an embodiment of the present invention, are used. The transmitter/receiver 2 is set on the ground, the repeater 3 is attached to the shaft near the head of the club, and the transmitter/receiver 2 and the repeater 3 are used so as to face each other at an interval of about 20 cm. FIG. 2 shows a perspective view of the transceiver 2 of the invention.
23 is an infrared light emitting element for searching, 21 and 22 are infrared light emitting elements for measurement, 24 is an infrared light receiving element, 26 is a display part, 27 is a KEY part, 28 is a pin for ground insertion (pin for WOOD) Consists of. FIG. 3 shows a perspective view of the repeater of the present invention. 31
32 is an infrared light emitting element, 32 is an infrared light receiving element, and 33 is a rubber band attached to the right side of the club shaft, which uses wind pressure during a golf swing to direct the entire surface. FIG. 4 is a diagram showing the repeater of the present invention attached to a club shaft. FIG. 5 shows the infrared light emitting elements 21 and 22
FIG. 3 is a perspective view of an infrared light irradiation range at a position cm apart. FIG. 6 is a front view of the infrared irradiation range. The diameter R of the irradiation circle is approximately 5 cm, and the intersection points A-A' and B-B' with the irradiation circle are when the repeater 3 passes through the irradiation circle. FIG. 7 is a diagram showing the relationship between the irradiation area of the repeater and the measurement time in the case of a straight golf swing. FIG. 7a is a diagram showing the relationship between the irradiation area of the repeater at the start of light reception and measurement time, and FIG. 7b is a diagram showing the relationship between the irradiation area of the repeater and measurement time at the end of light reception. FIG. 8 is a diagram showing the irradiation area of the repeater and the measurement time in the case of slice swing. FIG. 8a is a diagram showing the relationship between the irradiation area at the start of light reception and the measurement time, and FIG. 8b is a diagram showing the relationship between the irradiation area of the repeater 3 and the light reception time at the end of light reception. FIG. 9 is a diagram showing the relationship between the irradiation area of the repeater 3 and the light reception time in the case of hook swing. FIG. 9a shows a relationship diagram between the irradiation area of the repeater 3 and the measurement time at the time of starting light reception. FIG. 9b is a diagram showing the relationship between the irradiation area of the repeater 3 and the measurement time at the end of light reception. HI indicates the position of the light receiving element 241, and H2 indicates the position of the light receiving element 242. R2 indicates the position of the repeater 3 at the time of starting the relay, and R1 indicates the position of the repeater 3 at the time of ending the relay. T1 indicates the light receiving time at the light receiving element 241 (position H1). T2 is the light receiving element 242 (H2
shows the light reception time at the position). The angle α1 indicates the angle of the infrared light of the repeater 3 corresponding to the light reception time T1. α2 indicates the angle of the infrared light of the repeater 3 corresponding to the light reception time T2. The angle θ indicates the inclination angle of the center of the radiation angle of the repeater with respect to the R1-H1 line or the R2-H2 line. Therefore, the angle θ corresponds to the inclination angle of the face of the golf club. The distance corresponding to T1 is d1 The distance corresponding to T2 is d2 The infrared radiation angle of the repeater is ±θ1 The speed of the repeater is V T0 is the correction time, and T0 is 0 of T1 or T2.
~0.134 times the value If the distance between the repeater and the transmitter/receiver is K, if T1>T2, it is determined to be a hook swing, and d1=V・(T1+T0)=K・tanα1 d2=V・(T2+T0)=K・tanα2 α2+θ=θ1 Therefore, tan(θ1-θ)= {(T2+T0)/(T1+T0)}tanα1 Therefore, by measuring T1, T2, and T0, the direction of inclination of the face and the angle of inclination of the face can be determined. . Furthermore, the distance between the repeater and the transceiver is K = 20cm, the distance between the positions H1 and H2 of the light receiving elements is 5cm, the radiation angle θ1 of the infrared emitting element of the repeater = ±14°, the radiation of the infrared emitting element for measurement of the transceiver If the angle is set to ±7°, α1 = θ1. Further, as an approximate value, if tan(θ1-θ)=θ1-θ tanθ1=θ1, then the approximate value can be obtained from the following equation. θ=θ1·{(T1-T2)/(T1+T0)} Note that when the accuracy of the inclination angle of the face is not required, T0 may be set to 0. Similarly, if T1<T2, it is determined to be a slice swing, and θ=θ1·{(T2-T1)/(T2+T0)}. FIG. 10 is a time chart showing the relationship between the light emission signal, the light reception signal, and the basic clock signal. The basic clock signal is CLK, the bit signals are t0 to t7, and the measurement infrared light emitting elements 21 and 22 of the transceiver 2 are used.
Let the light emission signal of the transmitter/receiver 2 be Y and Z, the light reception signal of the repeater 3 be RR, and the light emission signal of the repeater 3 be RS. The measurement light emission signal SO is emitted at the time of bit signals t0 and t4, and is emitted during 5μs.
Emits infrared light for only 1.25μs. During measurement, the repeater receives signals at 5μs intervals. The infrared light emission signal RS of the repeater 3 is emitted with a one-bit delay from the light reception signal RR, and is distinguished from the reflected light. Next, transmitter/receiver 2
When the infrared light receiving element 241 receives the infrared light receiving signal Y from the repeater, the infrared light receiving element 242 similarly receives the infrared light receiving signal Y from the repeater.
receives the infrared light reception signal Z from the repeater. The light reception signals Y and Z are received at time t2 or t6.
Note that the light reception signal X indicates the light reception signals Y and Z. FIG. 11 shows a time chart showing the relationship between the golf swing and the infrared light emission signal. S1000 is
Light emission signal once every 1000ms, S100 light emission signal once every 100ms, S2 light emission signal once every 2ms,
The SO signal is a light emission signal once every 5 μs. T1 is the measurement signal from the light receiving element 241, T2 is the measurement signal from the light receiving element 24
This is the measurement time according to 2. S1000, S10
0 and S2 are emitted from the infrared light emitting element 23 for search, and the SO signal is emitted from the infrared light emitting elements 21 and 22 for measurement. The S100 signal is emitted for 400ms after the start of the backswing, the S2 is emitted for 1600ms, and the SO signal is emitted for 30ms, and the light emission DUTY (number of operations per unit time) is switched depending on the golf swing state. Photodetector 2 when emitting SO signal for 30ms
The light receiving time of 41 is T1, and the light receiving time of light receiving element 242 is T2. FIG. 12 shows a block diagram of the electric circuit of the transceiver 2. As shown in FIG. Program controlled by LSI25. 2
1, 22, 23 are red light emitting elements, 211, 22
1,231 is a driver for current amplification, 241 and 242 are infrared light receiving elements, 240 is an operational amplifier for amplifying the received light signal, 26 is a liquid crystal display section, 261 is a notification section, 27 is a key operation section, and 291 is a power supply circuit for battery voltage. stabilized, LSI25, infrared receiving element 241
and 242, supplies power to the operational amplifier 240 and the display unit 26. 29 is silver oxide battery (2 1.5V)
Consists of. FIG. 13 shows a block diagram of the electric circuit of the repeater 3. A driver 3 receives an infrared signal at a light receiving element 32, amplifies the voltage at an operational amplifier 33, and delays it by 1 bit at a delay circuit 34 to distinguish it from reflected light.
5, the current is amplified and an infrared signal is transmitted from the infrared light emitting element 31. The power supply circuit 36 stabilizes the power supply voltage of the battery 37 and supplies power to the infrared light emitting element 32, operational amplifier 33, and delay circuit 34. battery 37
is composed of silver oxide batteries (2 1.5V). FIG. 14 shows a flowchart of a program for measuring the face inclination direction and inclination angle of a golf club. When the face tilt direction and tilt angle measurement start key is operated, a face tilt direction and tilt angle measurement program is executed. First, in step 901, the number of previous swings and the direction and angle of inclination of the face are displayed for one second. In the next step 902, the search infrared light emitting element S1000 emits light once every 1000 ms. In the next step 903, the presence or absence of a light reception signal is confirmed. Step if there is no light reception signal
Repeat between 901 and 903. When the received light signal is confirmed in the next step 903,
Proceeding to the next step 904, an address set confirmation sound is announced. In the next step 905, the search infrared light emitting element is switched to S100, which emits light once every 100 ms, to increase the search speed. next step
After confirming the light reception signal in 906, the process returns to step 905. During addressing, steps 905 and 906 are repeated. Next time you start a takeback, step 906
The received light signal cannot be confirmed in the next step.
The process moves to 907, and the search infrared light emitting element S100 emits light, and if the light reception signal cannot be confirmed in the next step 908, the process moves to the next step 909. Step 907 and step 400ms from start of takeback
Repeat between 909. When the light reception signal is confirmed in step 908, it is determined that the wagging operation is occurring, and the process returns to the address state in step 905. Next, when 400 ms or more have passed after the start of takeback, the process moves to the next step 910, where the search infrared emission signal is switched to the S2 signal that emits light once every 2 ms.
Make the search speed even faster. If the light reception signal is not confirmed in the next step 911, the process moves to the next step 912, and the time within 2000 ms after the start of takeback is monitored. During top of swing and downswing, step 910
and step 912 are repeated. Next, approach the impact area and step 911
When the search infrared light emitting signal S2 is confirmed, the process moves to the next step 913, and the measurement infrared light emitting element 21 is detected.
and 22 starts emitting the infrared light emission signal SO once every 5 μs. If the reception signal of this high-speed measurement infrared emission signal SO is not confirmed in the next step 914, the process moves to the next step 915, and the maximum measurement time is 30 minutes.
Steps 913 and 915 are repeated to prepare for measurement within ms. Next, when the Y or Z light reception signal is confirmed in step 914, the process moves to the next step 916, and the time counter T1 of the measurement infrared emission signal Y and the time counter T2 of the measurement infrared emission signal Z start counting. do. Next, in step 917, if the time corresponding to the maximum low speed is within 18 ms, the process moves to the next step 918, in which the infrared emission signal SO for measurement is emitted, and in the next step 919, Y and Z light reception is performed. If there is a signal, return to step 916. While either the measuring infrared light emission signal Y or Z is being received, steps 916 and 919 are repeated to measure the head passage time. When both the measurement infrared emission signals Y and Z are no longer received, the process moves from step 919 to step 920, and the measurement of the head passage time is completed. Next, in step 920, if T1=T2,
It is determined that the swing is a straight swing with no inclination of the face, and the process moves to the next step 921, where θ=0 for the straight swing. T1=T2 at step 920
Otherwise, proceed to the next step 922. step
At step 922, if T1>T2, it is determined that there is a hook swing, and the process moves to the next step 923, where the phase inclination angle θ of the hook swing is calculated. step
At step 922, if T1>T2 is not satisfied, it is determined that it is a slice swing, and the process moves to the next step 924, where the inclination angle θ of the face of the slice swing is calculated.
The phase angle θ of step 921 or step 923 or 924 is stored in the memory in the next step 925, and the completion sound is announced in the next step 926.
Returning to the first step 901, the measured inclination direction and inclination angle of the face are displayed. In addition, at step 912, 2000m after the start of the swing
If there is no light reception signal within s, it is determined that the swing is not a golf swing, and in step 927, an error is determined to be 0.
Also, in step 915, if T>30ms or more,
It is determined that the trajectory of the golf swing is off and the steps are taken.
At 928, error 1 is generated. Also, at step 917, if T>18ms,
If the head speed is determined to be 3 m/s or less, step
Error 2 is generated at 929. After the measurement is stopped due to the occurrence of the error described above and an error sound is issued in step 930, the process returns to the first step 901 and the error number is displayed on the display section. FIG. 15 shows a flowchart of a memory reading program. When you operate the memory key, you first specify the memory address of the last swing. Read the memory contents in step 953,
At step 954, the number of swings in the final round, the direction of inclination of the face, and the angle of inclination of the face are displayed. In the next step 955, the number of swings is counted down and displayed sequentially up to the first number of swings. For example, if the memory capacity is for 100 swings, if you swing 250 times, the number of swings will be
Displays 250 times, the direction of inclination of the face, and the angle of inclination of the face, and the following, sequentially, the first number of swings.
Displays the number of swings up to 150 times, the direction of inclination of the face, and the angle of inclination of the face. FIG. 16 shows the display contents of the display section 26. It is composed of a face inclination direction display area 261 and a face inclination angle display area 262. The figure shows an example of a slice swing of 3 degrees. <Effects of the Invention> In the electronic golf swing training machine of the present invention, in the impact area of the golf swing, the light emitting circuit of the infrared light emitting element is received by the separately provided infrared light receiving element, and each light receiving By comparing the number of times, the direction of inclination of the face of the golf club and the angle of inclination of the face of the golf club are measured. Therefore, by increasing the number of times the infrared light-emitting element emits light, it is possible to increase the accuracy of measuring the angle of the face, and it is possible to measure the angle of inclination of the face with more than 10 times the accuracy compared to the conventional method. It is possible to do so. Furthermore, by integrating the internal electronic circuit, it is possible to manufacture a pocket-sized ultra-compact electronic golf swing training machine. Therefore, it can be easily used anywhere, such as during a round of golf, during batting practice at a golf driving range, or during practice swing practice at home.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the state of use of the present invention, Fig. 2 is a perspective view of a transceiver, Fig. 3 is a perspective view of a repeater,
Fig. 4 is a diagram showing the repeater attached to a golf club shaft, Fig. 5 is a perspective view of the infrared irradiation range at a position 20 cm away from the infrared light emitting element for measurement,
Figure 6 is a front view of the infrared light irradiation range by the infrared light emitting element for measurement, Figure 7 is a diagram showing the state of measurement time in the case of a straight swing, and Figure 8 is the state of measurement time in the case of a slice swing. Figure 9 is a diagram showing the state of measurement time in the case of hook swing, Figure a is a diagram showing the light reception start state, Figure B is a diagram showing the light reception end state, Figure 10 is a diagram showing the basic clock signal,
A time chart showing the relationship between the bit signal, the light emitting signal, and the light receiving signal. Fig. 11 is a diagram showing the relationship between the golf swing state and the infrared emitting signal. Fig. 12 is a block diagram of the electrical circuit of the transmitter/receiver. Fig. 13 is a diagram showing the relationship between the golf swing state and the infrared emitting signal. Figure 14 is a flowchart of the measurement program, Figure 15 is a flowchart of the memory read program, and Figure 16 is a block diagram of the electrical circuit of the repeater.
The figure shows the display contents of the display section. 1... Golf club head, 2... Transmitter/receiver, 3... Repeater, 4... Golf club shaft, 20... Transmitter/receiver case, 21, 22...
Infrared light emitting element for measurement, 23... Infrared light emitting element for search, 241... Left infrared light receiving element, 242...
Right infrared light receiving element, 25... LSI, 26... Display section, 261... Notification section, 27... Key operation section, 2
8... Golf ball support pin, 29...
Battery, 30...Repeater case, 31...Infrared light emitting element, 32...Infrared light receiving element, 33...Rubber band for attachment, CLK...Basic clock signal, t0~
t7... Bit signal, S... Infrared emission signal of the transceiver, Y... Light reception signal by the infrared light receiving element 241 of the transceiver, Z... Infrared light receiving element 24 of the transceiver
2 light reception signal, X...light reception signal (Y+Z),
RR...Infrared reception signal of the repeater, RS...Infrared emission signal of the repeater, R...Infrared light irradiation circle radius, T1...
...Light reception time of the light receiving element 241 of the transmitter/receiver, T2...
...Light reception time of the infrared light receiving element 242 of the transmitter/receiver, T
...Monitoring time, θ...Face inclination angle, θ1
... Infrared light emission angle of repeater, α1 ... Light reception time T
The angle of the infrared light of the repeater corresponding to 1, α2...The angle of the infrared light of the repeater corresponding to the light reception time T2.

Claims (1)

[Claims] 1. During a golf swing, a repeater consisting of a light-receiving element that receives a signal, a delay circuit that delays the received signal, and a light-emitting element that emits the delayed signal is attached to the shaft of the golf club, and the transmitter/receiver Set the front side perpendicular to the ground, and
Two measurement infrared light emitting elements with narrow directivity that emit light signals are provided above and below the front of the transmitter/receiver so that the radii of the two irradiation circles formed in the space overlap, and When the club head passes through the two irradiation circles, two infrared receivers with wide directivity receive the infrared light emitted by the repeater attached to the golf club head as a reception signal and convert it into a voltage value. The elements are provided on the left and right sides of the front of the transmitter/receiver, and the time during which the left side light reception signal converted into a voltage value is received and the time during which the right side light reception signal converted into a voltage value is received. An electronic golf swing training device characterized in that the transceiver has a built-in LSI that measures each and calculates the inclination angle of the face of the golf club.