JPH0527971Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field This invention relates to a golf speed detection device that detects, for example, the initial velocity and head speed of a golf ball.

(B) Prior Art When configuring the golf speed detection device of the above example, a light emitter is removably attached to one side of the artificial turf pine and a light receiver is attached to the other side, and each of these light emitters and light receiver is connected to a control circuit. When connected, it becomes possible to detect the initial velocity and head speed of the golf ball.

However, if the emitter and receiver are separated and removably attached to the mat as described above, detection will be impossible if the optical axes do not match, so the player
First, the emitter and receiver must be temporarily fixed to the artificial turf pine, and then roughly adjusted visually so that the emitter and receiver face each other, and then adjusted so that the optical axes mentioned above are exactly aligned. However, there was a problem in that the adjustment operation was troublesome.

Furthermore, there is a problem in that if either the above-mentioned light projector or light receiver is lost, it becomes unusable.

In order to solve such problems, conventionally, for example, Japanese Patent Publication No. 58-44387 and Japanese Utility Model Publication No. 59-
As described in Publication No. 41457, a device has already been devised in which a light emitter is mounted on one side of a base frame and a light receiver is mounted on the other side, and the positions of the light emitter and light receiver are set so that no optical axis adjustment is required. ing.

However, each of these conventional devices has a structure in which the sealed box that constitutes the emitter and receiver is directly attached to the top surface of the base frame, and the sealed box is generally made of metal to ensure its rigidity. , are easily affected by the temperature of the floor surface, and especially when semiconductor elements are used as emitters and receivers, due to the physical properties of semiconductors, they are strongly affected by the ambient temperature, causing characteristics to change and reliability to deteriorate. There was a problem.

(c) Problems that the invention aims to solve This invention proposes that when semiconductor elements are used as the light emitting means and the light receiving means, the emitter and the receiver are placed floating above the floor surface so that these semiconductor elements can be placed above the floor surface. The purpose of the present invention is to provide a speed detection device for golf that is not easily affected by temperature, has small changes in characteristics, and can improve reliability.

(d) Means for solving the problem This invention includes a light projector equipped with at least one pair of semiconductor light emitting means, and a light receiver equipped with at least one pair of semiconductor light receiving means for receiving light emitted from the semiconductor light emitting means. In the golf speed detecting device, the light emitter and the light receiver are arranged opposite to each other at separate positions on the base frame, and a mat is arranged on the upper surface of the base frame, and the mat corresponds to the arrangement position of the light emitter and the light receiver on the base frame. Then, projecting pieces are integrally formed on the base frame, and via brackets that are erected and fixed to these projecting pieces,
A speed detection device for golf is characterized in that the above-mentioned light projector and light receiver are disposed at a position floating above a base frame.

(e) Effects of the invention According to this invention, the above-mentioned emitter and receiver are disposed at a position floating upward from the base frame through the respective brackets which are erected and fixed to the above-mentioned protrusions. The semiconductor light-emitting means and the semiconductor light-receiving means provided inside each of the light receivers are relatively unaffected by the temperature of the floor surface, and have the advantage that changes in semiconductor characteristics are small and reliability can be improved.

(F) Embodiment An embodiment of this invention will be described below in detail based on the drawings.

The drawing shows a speed detection device for golf;
2, a metal base frame 1 is provided along the swing direction of the club, and one front side and the other front side of this flat base frame 1 have protrusions protruding toward the heel side and toe side. Pieces 2 and 3 are integrally formed.

Furthermore, an artificial turf mat 4 is disposed on the base frame 1 described above to cover the entire surface of the base frame 1.

A plurality of stopper pieces 5 are provided at the end of the base frame 1, which are bent upward from the end of the base frame 1, and these stopper pieces 5 are used to stop the artificial turf pine. Prevents misalignment.

Meanwhile, a light-emitter 7 is fixed in a floating manner on the protruding piece 2 on one side via brackets 6, 6 arranged in an upright manner, and a light-receiver 9 is fixed in a floating manner on the protruding piece 3 on the other side via brackets 8, 8 arranged in an upright manner, with the light-emitter 7 and the light-receiver 9 facing each other.

Inside the above-mentioned floodlight 7 is a first semiconductor light emitting means 10.
and the second semiconductor light emitting means 11 are arranged separately, and the above-mentioned first semiconductor light emitting means 1 is arranged in the above-mentioned light receiver 9.
The first light ray L1 is emitted diagonally upward from 0.
A first semiconductor light receiving means 12 that receives light (specifically modulated light) and a second light beam L2 (specifically modulated light) emitted diagonally upward from the second semiconductor light emitting means 11 described above. Second semiconductor light receiving means 1
3 are arranged.

Here, light emitting diodes, so-called LEDs, etc. can be used as the above-mentioned semiconductor light-emitting means 10, 11, and each of the above-mentioned semiconductor light-receiving means 12,
As 13, a photodiode, a phototransistor, etc. can be used, and it is known that these semiconductor elements are easily affected by temperature due to their physical properties.

Figure 3 shows the control circuit of the speed detection device,
The oscillator 14 with an oscillation frequency of about 30KHz is connected to the first,
It is connected to each second semiconductor light emitting means 10,11.

A first semiconductor light receiving means 12 that receives the first light beam L1 emitted from the first semiconductor light emitting means 10 described above.
A CPU 20 is connected to the next stage via an amplifier 15, a high-pass filter 16 for cutting disturbance light, and a waveform shaper 17.

Furthermore, in the same manner as described above, an amplifier 21, a high-pass filter 22, and a waveform shaper 23 are installed at the next stage of the second semiconductor light receiving means 13 that receives the second light beam L2 emitted from the second semiconductor light emitting means 11. The above-mentioned CPU 20 is connected through the CPU 20.

The CPU 20 described above drives and controls the LCD 24 as a display means in accordance with the program stored in the ROM 18 based on inputs from the waveform shapers 17 and 23, and the RAM 19 stores necessary data.

Here, the above-mentioned LCD 24 is disposed on the top housing portion of the light projector 7 and the light receiver 9 shown in FIG. 1 so as to be visible to the player.

The operation of the golf speed detecting device configured as described above will be explained with reference to the flowchart shown in FIG.

When detecting the initial velocity of the ball, first place the golf ball A at the solid line position shown in FIG. 1, and hit the golf ball A in the direction of the arrow.

In the first step 31, the CPU 20 determines whether or not the first light beam L1 is blocked by the golf ball A described above, and if the light is blocked, the process proceeds to the next second step 32, while if the light is not blocked, the CPU 20 returns.

In the second step 32 described above, the CPU 20 performs a count up.

Next, in a third step 33, the CPU 20 determines whether or not the second light beam L2 is blocked by the golf ball A described above, and when the light is blocked, the process proceeds to the next fourth step 34, while when the light is not blocked, the CPU 20 proceeds to the above-mentioned first step. Return to 31.

At the fourth step 34 described above, the CPU 20 stops counting.

Next, in a fifth step 35, the CPU 20 calculates the number of pulse counts from the count up in the second step 32 to the count stop in the fourth step 34, and
The initial velocity of the ball is calculated based on the time measured by the CPU's built-in timer.

Next, in the sixth step 36, the CPU 20 displays the LCD 24
After controlling the drive to digitally and visually display the initial velocity of the ball as the calculation result in the fifth step 35 for a preset period of time, the process returns to the first step 31.

Note that when detecting the head speed, the first
When the golf ball A is placed at the position of the imaginary line α in the figure and the golf ball A is hit, the head speed can be detected and displayed according to the flowchart shown in FIG.

By the way, in the above-mentioned golf speed detection device, since the above-mentioned light projector 7 and light receiver 9 are fixed facing each other at a predetermined spaced position on the base frame 1, the respective semiconductor light emitting means 10, 11 of the light projector 7 and the light receiver 9 are fixed. Since the optical axes of the semiconductor light-receiving means 12 and 13 maintain their optical axes precisely aligned, there is no need for temporary fixing or troublesome optical axis adjustment, which not only improves the ease of handling, but also improves the light projector 7 described above. Since the light receiver 9 and the light receiver 9 are integrally connected via the base frame 1, there is no risk of losing the light emitter 7 and the light receiver 9, and the structure is simple.
For example, it can be easily transported and used at a golf driving range or the like.

Moreover, since the above-mentioned light emitter 7 and light receiver 9 are disposed at a position floating upward from the base frame 1 via the respective brackets 6 and 8 that are erected and fixed to the above-mentioned protrusions 2 and 3, these light emitters 7 , receiver 9
Semiconductor light emitting means 10, 11 provided inside each
The semiconductor light-receiving means 12 and 13 are relatively unaffected by the temperature of the floor surface, have little change in semiconductor characteristics, and have the effect of improving reliability.

FIG. 5 shows another embodiment of the speed detection device for golf. In this embodiment, a narrow base frame 1' is provided only at the portion where the above-mentioned light projector 7 and light receiver 9 face each other. An artificial turf mat 4' having a corresponding shape is arranged on the upper surface of the main part of the base frame 1'.

Also, a plurality of stopper pieces 5 are formed by bending upward from a predetermined portion of the base frame 1'.
...and a plurality of stopper pieces 5a cut and raised from a predetermined portion of the base frame 1',
This prevents the artificial turf mat 4' from shifting.

With this configuration, the golf speed detection device can be made smaller and more compact.

In other respects, the operation and effects are substantially the same as those of the previous embodiment, so the same parts in FIG.

[Brief explanation of drawings]

The drawings show one embodiment of this invention, in which Fig. 1 is a perspective view of a golf speed detection device, Fig. 2 is a rear view of the same device, Fig. 3 is a control circuit block diagram, and Fig. 4 is a perspective view of a golf speed detection device.
The figure is a flowchart showing the speed detection process, and FIG. 5 is a plan view showing another embodiment of the speed detection device for golf. 1, 1'...Base frame, 2, 3...Protrusion piece,
4, 4'...Artificial grass mat, 6, 8...Bracket, 7...Light emitter, 9...Light receiver, 10, 11...
...Semiconductor light emitting means, 12, 13...Semiconductor light receiving means.

Claims (1)

[Claims for Utility Model Registration] A light projector 7 comprising at least a pair of semiconductor light emitting means 10, 11; and at least a pair of semiconductor light receiving means 12, 1 for receiving light emitted from the semiconductor light emitting means 10, 11.
In the golf speed detecting device, the light emitter 7 and the light receiver 9 are arranged facing each other at a spaced apart position on the base frame 1, and the mat 4 is disposed on the upper surface of the base frame, while the above-mentioned Projecting pieces 2 and 3 are integrally formed on the base frame 1 in correspondence with the installation positions of the light emitter 7 and the light receiver 9 on the base frame 1, and the respective brackets 6 and 8 are erected and fixed to these projecting pieces 2 and 3. A golf speed detection device in which the above-mentioned light projector 7 and light receiver 9 are disposed at a position floating above the base frame 1 via.