JPH09168621A - Target system for golf practice - Google Patents

Abstract

PROBLEM TO BE SOLVED: To identify hit bat even without devising a ball and to remarkably reduce facility construction costs, etc., by operating the bat, from which the target hitting ball is hit, out of plural bat and displaying the bat on a bat identification display means. SOLUTION: When an impulse sensor installed at a target 2 detects the hit of ball, a detecting signal is transmitted by a main body 10 by radio. At a section 11 of CPU 2, the shot time is calculated by detecting hit time from the received hit signal, the bat is searched correspondingly to the shot time, and the hit enable bat is identified. While using a photosensor B, C1 or C2, it is detected whether the ball exists on a straight line or not, and the bat with which the horizontal locus is put on the straight line is searched. Besides, the initial speed of ball is calculated from the sensor B for initial speed measurement, the elevation angle is calculated from the photosensors C1 and C2, the reach distance of ball is calculated from the initial speed and elevation angle, and the bar shooting the target hit ball is identified and displayed on a target hit bat display part 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a target for hitting a ball, which is set at a golf driving range or the like, and when the shot ball hits the target at a certain time so that the player can practice the shot with a sense of play. The present invention relates to a golf practice target device that plays a fanfare, a melody, etc., or a character or the like moves, and particularly relates to a golf practice target device that can identify a bat at which a hit ball hits.

[0002]

2. Description of the Related Art As a conventional target device provided with an informing means, there is a yardage board device called "Soralumi", a hole-in-one game, etc., which is disclosed in Japanese Patent Laid-Open No. 6-154377. Solar Lumi is a light emitting type yard display device that automatically charges the night yard display numbers by charging it with a solar cell during the day, and it is a device that has a target and a lamp or melody operates when the ball hits. A device in which several holes are installed and a lamp and melody act like a solarmi when a ball enters the holes, and is provided with playability such as giving a shot person a score.

[0003]

Since the solar lumi uses a solar battery as a power source, it is not necessary to dispose a power source or the like from the outside, and the installation is simple, but it has a poor game playability and a hole-in-one game. In this case, a hole was provided on the green, a ball detection function was provided in this hole, and signals from each hole were transmitted by wire, so large-scale construction was required and it was not possible to install it in the existing practice field. Not only was it difficult to install, but it was difficult to install it in a new practice area due to problems such as installation costs. Also, since neither person can identify the hit person,
If it is desired to specify, it is necessary to devise such as using a color ball or incorporating a memory element in the ball, which is troublesome in operation.

The present invention has been made in view of the above-mentioned problems of the prior art, and enables identification of a hit-at-bat at the ball without making any modifications to the ball, which significantly reduces facility construction costs and further facilitates handling. It is intended to provide a target device for golf practice which has great merit in terms of simplicity and the like.

[0005]

In order to achieve the above object, the golf practice target device of the present invention is a golf practice target device provided with a notifying means for notifying a hitter when a ball hits. A shot identifying means for identifying the launch of the ball, an initial velocity measuring means for measuring the initial velocity of each launched ball, a flight direction measuring means for measuring the elevation direction of the launched ball, and a ball for the target. Based on the time data of the shot detection means, the time data of the shot identification means, the numerical data of the initial velocity measurement means and the flight direction measurement means, and the time data of the hit detection means. The at-bat identification display means for calculating the at-bat at which a hit ball is hit from a plurality of at-bats and displaying the at-bat is provided.

The shot identifying means has a sensor for determining the presence / absence of a ball set on the tee, and a calculation function for calculating the ball launch time and the at-bat identification data from the signal determined by the sensor. .

Further, the initial velocity measuring means is provided with a pair of optical sensors in which a light emitting portion and a light receiving portion are arranged at upper and lower mutual positions close to the bat at a vertical plane including a straight line connecting the bat and the target. The optical sensor has a calculation function of detecting the passing time of the ball and calculating the initial velocity based on the data of the ball detection time and the ball launch time detected by the shot identifying means.

Further, the flight direction measuring means is shifted in the launch direction from the middle of the bats and the target on the vertical plane including the straight line connecting the bats and the target to the upper and lower mutual positions closer to the bats in the launching direction and the light receiving section. It has a calculation function of calculating the elevation angle of the ball hit from the time when the ball passes between the optical sensors by the two sets of the optical sensors.

It is preferable that the two sets of optical sensors of the flying direction measuring means have their optical axes intersect with each other.

Further, it is preferable that the arithmetic function of each of the above means is a CPU for collectively processing the signals from the respective sensors.

Further, it is preferable that the respective sensors and the CPU are connected by a signal line and the target and the CPU are connected by a wireless means because the apparatus can be simplified.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a target device for golf practice of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory elevation view showing a sensor position for identifying a bat according to the present invention. Reference numeral 1 denotes a shot point on a tee device, and a sensor A for detecting a shot at a lower portion for detecting a shot and determining whether or not there is a ball on the tee device. Is installed. Reference numerals 3a and 3b denote the light emitting portion and the light receiving portion of the passage time detecting optical sensor B for calculating the initial velocity of the ball, 4a and 4b denote the light emitting portion and the light receiving portion of the optical sensor C1, and 5a and 5b denote the optical sensor C2. C is the light emitting part and the light receiving part of
Reference numerals 1 and C2 form a set C of optical sensors for calculating the elevation angle of the ball, and L1 and L2 are optical axes of the optical sensors C1 and C2, respectively.

The shot detecting sensor A is a reflection type optical sensor having a built-in light emitting portion and is installed in the lower portion of the tee device.
The presence or absence of the ball can be detected by reflecting light on the ball on the tee device. Further, the optical sensor B for calculating the initial velocity is installed at a position about 2.5 meters in front of the shot point 1, the light emitting section 3a is provided on the floor surface, and the light receiving section 3b is provided on the ceiling surface above the light emitting section 3a. The initial velocity is determined from the shot time detected by the sensor A and the ball passing time of the sensor B. Two sets of optical sensors C for elevation angle calculation
1, C2 have optical axes that are non-parallel to each other and have optical axes L1,
The light emitting parts 4a and 5a are provided on the floor so that L2 is crossed, and the light receiving parts 4b and 5b are provided on the ceiling. The entire set C of the sensors is installed at a position 2 to 3 meters from the shot point. I am doing it. And a set B of these sensors,
All of C are provided in a vertical plane including a straight line connecting the tee device and the target. By using the optical sensor as the sensor in this way, the device can be made inexpensive.

The sensor A for shot detection need not be an optical sensor as long as it can detect the presence or absence of a ball on the tee device. Further, in FIG. 1, θ1 and θ2 indicate the elevation angle of the hit ball, M1 indicates the flight direction of the hit ball at the elevation angle θ1,
M2 indicates the flight direction of a hit ball with an elevation angle θ2.

FIG. 2 is a plan view showing the whole from the shot point 1 to the target 2. In this embodiment, the target 2
Is a circle with a diameter of about 60 cm, and the distance from the shot point is about 50 yards. Then, the detection of hitting the target is performed by an impact sensor (not shown) installed on the target.

FIG. 3 is a block diagram of the present apparatus. In this figure, 10 is a batting identification display section (hereinafter referred to as the main body) which is the main body of the target apparatus for golf practice, and 20 is a target installed on the green. It is a department. The main body 10 includes a CPU unit 11 that performs arithmetic processing, a reception unit 12, an interface 13, and a hit-bats display unit 14, and each sensor A,
B, C1 and C2 are connected to the interface 13. The target unit 20 includes a target 2 and a processing transmission circuit 21 that detects, processes, and transmits a hit signal from an impact sensor installed in the target, and an actuating unit 22 such as a character that operates when hitting a ball. Built in. A signal is sent from the target 2 to the main body 10 by wireless one-way communication, and the main body and each sensor A, B, C1, C2 are connected by a signal line. And these sensors A,
The signals from B, C1 and C2 are transmitted to the main body side in real time.

Next, the algorithm for identifying the hit at bat will be described. First, the present invention is based on the following three assumptions that have been clarified by experiments. The horizontal trajectory of the shot hitting the target is on the straight line connecting the shot point and the target. The flight time of the shot hitting the target is within a limited time range. The initial velocity of the shot hitting the target is within a limited range.

The procedure for identifying the turn at bat of this embodiment will be described with reference to the flowchart of FIG. The steps in this figure are based on the above assumption. First, when the impact sensor installed on the target 2 detects the hit of the ball in S1, the detection signal is wirelessly transmitted to the main body 10 in real time. Body 10
The CPU section 11 detects the hit time from the received hit signal (S2), calculates the shot time from the estimated flight flight time setting of the ball based on the assumption, and performs the bat at the shot time (S3). In this device, the target installation position is limited to about 50 yards from the shot point, so the flight time of the ball is limited to a certain range. Therefore, since the hit time is detected, it is possible to identify the hit possible bat by searching the shot time of each bat. still,
According to preliminary experiments, the flight time of this ball is 1 to 3 seconds. FIG. 5 is an explanatory diagram of the relationship between the hit time and the shot time, T0 is the hit time, t1 is the estimated minimum ball flight time,
t2 represents the estimated maximum ball flight time, and the range from the time T1 t2 hours before to the time T2 t1 hours before is the range of the possible shot time.

Since the horizontal trajectory of the hit shot is on the straight line connecting the shot point and the target from the assumption, the optical sensor B or C attached to each bat is used here.
1, C2 detect whether or not the ball is on this straight line (meaning that the sensor B or C1, C2 senses the ball is on the straight line), and the horizontal locus rides on the straight line. The shot shot at bat is searched (S4). Since the horizontal trajectory is detected in this manner, it is possible to identify the batter even if there are a plurality of hitters.

Then, in S5, the initial velocity of the ball is continuously calculated based on the assumption. This is the above S2, S3, S
Optical sensor B for each shot identified as being possible in 4
Is calculated from the time when the ball passes and the shot time of the sensor A. The distance from the preliminary experiment to the target is 5
In the case of 0 yards, the initial velocity of the ball is 30 to 40 m / sec.

At S6, the elevation angle is calculated by the two sets of optical sensors C1 and C2. Optical axes L1 and L of the optical sensors C1 and C2
Since 2 is not parallel to each other, the points at which the light ray L1 and the light ray L2 pass are different depending on the elevation angle of the ball, so the timings at which they pass both sensors are also different. Therefore, since the initial velocity of the ball is calculated in S5, the elevation angle can be calculated. The light beams L1 and L2 are crossed at the center because when the elevation angle is relatively small (elevation angle θ1), the shot ball passes in the order of light rays L1 → L2, and conversely, the elevation angle is relatively large (elevation angle). This is because, in the case of θ2), the light rays L2 → L1 pass in this order, and the detection accuracy can be improved accordingly. Next, in S7, the reaching distance of the ball is calculated from the initial velocity and the elevation angle of the ball.

As described above, the horizontal locus becomes clear in S4, and S
Since the initial velocity and elevation angle of the ball are calculated in S5 and S6, and the reaching distance is clear in S7, the trajectory of the ball is clear from these conditions. Therefore, when the ball hits the target 2, the bat at which the hit ball is shot can be identified by selecting the shot whose reaching distance is closest to the distance to the target (S8).

The target portion may be such that fanfare or music is played when the ball hits, or the character 23 appears when the ball hits as shown in FIG. By making the target playable in this way, it is possible to practice like a game.

Since the present invention is configured as described above, it is possible to significantly reduce the cost of the equipment by the method using the optical sensor, and the shot time and the horizontal locus do not meet the above assumptions. Since only the judgment is made, the logical operation can be simple. In the present invention, the light emitting portion and the light receiving portion of each optical sensor may be installed in reverse, and the initial velocity calculating optical sensor B may be used as one of the elevation angle calculating optical sensors C1 and C2. Is also good.

[0025]

As described in detail above, the golf practice target apparatus according to the present invention immediately identifies the bat at the hit ball by simply processing the signals from the measuring and detecting means by the CPU all at once. In particular, since the sensor is provided in the vertical plane including the straight line connecting the tee device and the target, it is possible to accurately confirm the hit person even when a plurality of batters hit at the same time. In addition, the use of a sensor does not cause mechanical failure and it does not break down, and because it uses an optical sensor and only installs the target part at a predetermined position on the green, it is easy to handle and the cost of facility construction can be greatly reduced. .

[Brief description of the drawings]

FIG. 1 is a golf training target device 1 according to the present invention.
It is an explanatory elevation view showing the position of the sensor of the embodiment.

FIG. 2 is an explanatory plan view from the same shot point to a target.

FIG. 3 is a block diagram showing a configuration of the present invention.

FIG. 4 is a flowchart showing a procedure for identifying a bat at which a ball hits a target.

FIG. 5 is an explanatory diagram illustrating a relationship between a hit time and a shot time.

FIG. 6 is a perspective view of an example of a target portion.

[Explanation of symbols]

1 ... Tee device, 2 ... Target, 3a ... Light emitting portion of optical sensor B, 3b ... Light receiving portion of optical sensor B, 4a ... Light emitting portion of optical sensor C1, 4b ... Light receiving portion of optical sensor C1 ,
5a ... Light emitting part of optical sensor C2, 5b ...
Light receiving part of the main body, at-bat identification display part which is the main body, 11 ...
・ CPU section, 14 ・ ・ Target hitting bat display section, 20 ・ ・ Target section A ・ ・ Shot detection optical sensor, B ・ ・ Striking ball initial velocity measurement optical sensor, C ・ ・ Striking ball elevation angle calculation optical sensor set , C
1 ... one optical sensor for elevation angle calculation, C2 ... another optical sensor for elevation angle calculation, L1 ... optical axis of optical sensor C1, L
2 ... Optical axis of optical sensor C2,

Claims (7)

[Claims] 1. A target device for golf practice, comprising a notification means for informing a hitter when the ball hits the ball, shot identifying means for identifying the hitting of the ball, and initial velocity of each hitting ball. The initial velocity measuring means for measuring, the flight direction measuring means for measuring the elevation direction of the launched ball, the hit detecting means for detecting that the ball hits the target, and the time of the shot identifying means. Based on the data, the numerical data of the initial velocity measuring means and the flight direction measuring means, and the time data of the hit detecting means, the bat at which the hit ball is hit from among the plurality of bats is calculated and the A target device for golf practice, comprising at-bat identification display means for displaying at-bat. 2. The shot identifying means has a sensor for determining the presence / absence of a ball set on the tee, and a calculation function for calculating the ball launch time and the at-bat identification data from the signal determined by the sensor. The target device for golf practice according to claim 1. 3. The initial velocity measuring means is provided with a pair of optical sensors in which a light emitting portion and a light receiving portion are arranged at upper and lower mutual positions close to the bat at a vertical plane including a straight line connecting the bat and the target, An optical sensor detects the passing time of the ball,
2. The golf practice target device according to claim 1, further comprising a calculation function for calculating an initial velocity based on the data of the ball detection time and the ball launch time detected by the shot identifying means. 4. The light emitting section and the light receiving section are arranged such that the flight direction measuring means shifts in the launching direction to upper and lower mutual positions closer to the batting than the middle of the batting and the target on a vertical plane including a straight line connecting the batting and the target. 4. The golf practice target device according to claim 1, further comprising a calculation function for calculating an elevation angle of the ball hit from the time when the ball passes between the optical sensors by two sets of optical sensors arranged with each other. . 5. The golf practice target device according to claim 4, wherein the two sets of optical sensors of the flight direction measuring means intersect their optical axes. 6. The golf practice target device according to claim 2, wherein the arithmetic function of each of the means is a CPU for collectively processing signals from each sensor. 7. The golf practice target device according to claim 6, wherein the sensors and the CPU are connected by a signal line, and the target and the CPU are connected by wireless means.