JPH0544308B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is applicable to a golfer playing a golf round or the like.
This invention relates to a pocket-type ultra-compact electronic golf swing training device that allows you to easily measure and check the head speed of a golf club anywhere.

<Problems to be Solved by the Invention> Golfers are very interested in the head speed of a golf club, which is related to the flight distance of a golf ball. However, the currently commercialized products are large and inconvenient to carry.
Can only be used in specific locations. Therefore, there is a need for a pocket-type ultra-compact electronic golf swing training device that allows you to easily check the head speed of a golf club during a golf round.

<Means for Solving the Problems> The electronic golf swing training device of the present invention includes a pocket-sized infrared 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 element that receives a signal via the repeater, an LSI that processes the received 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 making it extremely small, the built-in area of the golf club head can be attached to the club shaft.

Particularly, in the transmitter/receiver, a plurality of infrared emission signals are time-divided, the light is received by one infrared light receiving element, and the plurality of infrared emission signals are identified by time-division processing. shall be.

<Example> The present invention will be explained below with reference to the drawings.

FIG. 1 shows a usage state diagram of a transmitter/receiver and a repeater that are an embodiment of the product of the present invention. The transmitter/receiver 2 is set on the ground, the repeater 3 is attached to the shaft near the club head, 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 section, 27 is a KEY section, 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 with the irradiation circle when the repeater 3 passes through the irradiation circle are A-A' and B-B', and the points A and A' are located from the center of the irradiation circle. If the angle formed by the sector is 2θ, the head speed V can be obtained by the following formula.

V=D(m)/T(s) V=R・sinθ/T(m/s) However, T=0.01ms×N N is the number of counts by 0.01ms signal cosθ=Z Z=[1-root(1 -a+a×a)]/(1-a) However, a=(T1×T2)/(T2×T2) T1 and T2 are A-A' and B-B' passage measurement times T is the larger of T1 and T2 However, when a≧1, the reciprocal of a is set as a. In particular, when a=1, D=0.866×R.

FIG. 7 shows the irradiation ranges of the search infrared light emitting element 23 (irradiation angle ±28 degrees) and the measurement infrared light emitting elements 21 and 22 (irradiation angle ±7 degrees). The dotted line is the ideal value, but since the actual distance is finite, the actual value is like the solid line. Infrared light emitting element 2 for search
3, when the repeater 3 is detected at the position of C1,
The measurement infrared light emitting elements 21 and 22 are operated. When the repeater 3 is detected at the position C2, time measurement is started, and time measurement is ended at the position C3, and the measurement times T1 and T2 of the infrared light emitting elements 21 and 22 for measurement are obtained.

FIG. 8 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,
The light emission signal of the measurement infrared light emitting element 21 of the transceiver 2 is Y, the light emission signal of the measurement infrared light emitting element 22 is Z,
Let the light reception signal of the transceiver 2 be X, the light reception signal of the repeater 3 be RR, and the light emission signal of the repeater 3 be RS. The light emission signal Y for measurement is time-divided into the time of the bit signal t0,
The infrared light emitting element Z for measurement is time-divided into the time of the bit signal t4, and emits infrared light for only 1.25 μs during each 10 μs. The infrared light receiving signal RR of the repeater 3 is received by the measurement infrared light emitting elements Y and Z at an interval of 5 μs. Next, 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, the infrared light emitting element 24 of the transceiver 2 receives the infrared light emitting signal X from the repeater. The light reception signal
It is possible to distinguish the signal received at time 6 from the infrared emission signal Z.

FIG. 9 shows a time chart showing the relationship between the golf swing and the infrared light emission signal. S1000 is
Light emission signal once every 100ms, S100 once every 100ms
S2 is a light emission signal once every 2 ms, Y signal and Z signal are light emission signals once every 10 μs, and T is a measurement time. S1000, S100, and S2 are emitted from the infrared light emitting element 23 for search, and the Y signal and Z signal are emitted from the infrared light emitting elements 21 and 22 for measurement. S100 signal is 400m after the start of backswing
Light emission for s, S2 light emission for 1600ms, Y signal and Z
The signal is emitted for 30ms, and by switching the transmission DUTY (number of operations per unit time) according to the golf swing condition, battery consumption is prevented and it is possible to swing continuously up to 10,000 times.

FIG. 10 shows a block diagram of the electric circuit of the transceiver 2. As shown in FIG. Program controlled by LSI25.

21, 22, 23 are infrared light emitting elements, 211, 2
22 and 231 are drivers for current amplification, 24 is an infrared light emitting element, 241 is an operational amplifier for amplifying the received light signal, 26 is a liquid crystal display section, 261 is a notification section, and 27 is a
The power supply circuit of the key operation section 291 stabilizes the battery voltage and supplies power to the LSI 125, the infrared light emitting element 24, the operational amplifier 241, and the display section 26. 29 consists of oxidation batteries (2 1.5V).

FIG. 11 shows a block diagram of the electrical 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
consists of silver oxide batteries (2 1.5V).

FIG. 12 shows a flowchart of a program for measuring the head speed of a golf club. When the head speed measurement start key is operated, the head speed measurement program is executed. First, step
At 901, the number of previous swings and head speed are displayed for 1 second. In the next step 902, the search infrared light emission signal S1000 is emitted once every 1000 ms. In the next step 903, the presence or absence of a light reception signal is confirmed. If there is no light reception signal, steps 901 and 903 are repeatedly executed.

When the light reception signal is confirmed in step 903, the process moves to the next step 904, and an address set confirmation sound is announced. In the next step 905, the search infrared light emission signal is switched to S100, which emits light once every 100ms, to increase the search speed. When the light reception signal is confirmed in the next step 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, where the search infrared light emission signal S100 is emitted, and if the light reception signal cannot be confirmed at 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
When you check the search infrared emission signal S2 at 911,
Proceeding to the next step 913, the measurement infrared light emitting element 2
1 and 22 start emitting infrared emission signals Y and Z once every 1 μs. If the high-speed measurement infrared emission signals Y and Z are not confirmed in the next step 914, the process moves to the next step 915, and steps 913 and 915 are repeated for a maximum measurement time of 30 ms. Repeat this step to prepare for measurement.

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 minimum head speed is within 18 ms, the process moves to the next step 918, and the measurement infrared emission signals Y and Z are output.
If there are Y and Z light reception signals at the next step 919, the process returns 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 time of passage through the head. When both the measurement infrared emission signals Y and Z are no longer received, the process moves from step 919 to step 902, and the measurement of the head passage time is completed.

Next, in step 902 and step 921, if the counters T1≠0 and T2≠0 of the measurement infrared emission signals Y and Z, the process moves to step 922. In step 922, the passing distance D of the infrared light irradiation circle is calculated,
Next, the larger value of the measurement times T1 and T2 is set as T, and the head speed velocity V is calculated by V=D/T. Next, in step 923 and step 924, it is reconfirmed whether the head speed V is within the measurable maximum speed and minimum speed, and if it is within the predetermined speed, the process moves to step 925 and the head speed V and number of swings are stored in memory. The measurement completion sound is announced at the next step 926, and the first step is started.
Return to 901 and display the measured head speed on the display.

At step 912, 200ms after start of takeback
If the search signal is not received within
Error 0 occurs at 927.

In step 915, if no measurement infrared emission signal is received for 30 ms, error 1 is generated.

If the infrared emission signal is received for 18 ms or more in step 918, error 2 occurs due to insufficient measurement speed.

When counter T1=0 in step 920, error 3 is generated because the light emission signal Y is not received from the infrared light emitting element 21.

When T2=0 in step 921, error 4 occurs because the light emission signal Z from the infrared light emitting element 22 is not received.

If the head speed is 50 m/s or more in step 923, the measurement accuracy will be exceeded and error 5 will occur.

After the measurement is stopped due to the occurrence of the error described above and an error sound is issued in step 934, the process returns to the first step 901 and the error number is displayed on the display section.

FIG. 13 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 and head speed of the final round 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, memory capacity
If the number of swings is 100, and the number of swings is 250, the number of swings 250 and head speed are displayed, and the number of swings and head speed are sequentially displayed up to the first number of swings 151.

In addition to the head speed, the present invention can also measure the acceleration of the head. That is, in Fig. 6, the passing time of each point A, B, A', and B', the distance between A and B, and the distance between A' and B' are measured, and the distance between A and B is measured.
Acceleration is measured from the speed change between B and A'-B'.

<Effects of the Invention> The electronic golf swing training machine of the present invention causes the light emission signals of a plurality of infrared light emitting elements to be emitted in a time-division manner,
Furthermore, since the light is received by one infrared light emitting element and the original light emission signal is identified, it is possible to reduce the size of the device.

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 while practicing swings 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,
Figure 4 is a diagram showing the repeater attached to a golf club shaft, Figure 5 is a perspective view of the infrared light irradiation range at a distance of 20 cm by the infrared light emitting element for measurement, and Figure 6 is A front view of the infrared light irradiation range by the infrared light emitting element for measurement, Fig. 7 is a diagram showing the infrared light irradiation range by the infrared light emitting element for search and the infrared light emitting element for measurement, and Fig. 8 shows the basic clock signal. , bit signal,
A time chart showing the relationship between the light emitting signal and the light receiving signal, Fig. 9 is a diagram showing the relationship between the golf swing state and the infrared emitting signal, Fig. 10 is a block diagram of the electrical circuit of the transmitter/receiver, and Fig. 11 is the diagram of the repeater. Electric circuit block configuration diagram, FIG. 12 is a flowchart of a measurement program, and FIG. 13 is a flowchart of a memory reading program. 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, 24... Infrared light receiving element, 25... LIS, 2
6...Display section, 261...Notification section, 27...Key operation section, 28...Golf ball support pin, 29...Battery, 30...Relay machine case, 31
...Infrared light emitting element, 32...Infrared light receiving element, 33
... Rubber band for attachment, CLK ... Basic clock signal, t0 to t7 ... Bit signal, X ... Infrared light reception signal of transmitter/receiver, Y ... Infrared light emitting element 2 for measurement
1: 1.25 μs light emitting signal once every 10 μs by Z: 1.25 μs light emitting signal once every 10 μs from the infrared light emitting element 22 for measurement, RR: Infrared light emitting signal of the repeater, RS: Infrared light of the repeater Light emission signal, S...Infrared light emission signal Y,
Z, S1000, S100, S2, S1000...
...1.25μs light emission signal once every 1000ms for search, S1
00...1.25μs light emission signal once every 100ms for search,
S2...1.25μs light emission signal once every 2ms for search,
R...Infrared light irradiation circle radius, T1, T2...Infrared light irradiation circle passing time, T...Measurement time, D...Infrared light irradiation circle passing distance, V...Head speed.

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 elements with narrow directivity that emit light emission signals are provided above and below the front of the transmitter/receiver so that the radius portions of two small irradiation circles formed in the space overlap, and a search infrared light emitting element with a wide directivity that emits a light emission signal that forms a large irradiation circle in space is provided at a position between the two measurement infrared light emitting elements in front of the transceiver; When the repeater is located within the irradiation circle, one infrared light receiving element with wide directivity that receives the infrared light emitted by the repeater as a reception signal and converts it into a voltage value is placed in front of the transmitter/receiver. and when any one of the light emitting elements is operating, the other light emitting elements generate a time-divided light emitting signal configured to stop light emission, and the one light emitting element receives infrared light. Electronic golf swing practice, characterized in that the transmitter/receiver has a built-in LSI that identifies which infrared light emitting element among the plurality of infrared light emitting elements the light reception signal received by the element corresponds to. Machine.