KR20130070166A - Golf ball speed/direction measuring device having sensing element arrays with non-parallel sensing planes - Google Patents

Abstract

The present invention relates to a sensor device for detecting the initial speed and direction of the golf ball, and does not include a structure installed in the vertical direction and to measure the horizontal speed and the vertical speed of the golf ball without intersecting each other in the sensing path of the sensing element. An array arrangement structure that can be measured and a method for detecting golf ball speed / direction are provided.
The golf ball sensor device of the present invention uses two or more arrays in which the sensing elements 11 and 21 are arranged in a one-dimensional array, and the sensing paths 12 and 22 of at least two arrays 10 and 20 are golf balls. It is installed to form different angles (α1, α2) from the ground toward the starting point 41, and the vertical coordinates by varying the ratio of the time to pass through the sensing path (12, 22) of different angles according to the direction of the golf ball It enables the measurement of the three-way velocity of the golf ball without the sensing element for detection.
The present invention provides the effect of being able to measure the precise vertical velocity without increasing the number of sensing elements and providing a wide sensing area which is left / right symmetrical.

Description

Golf ball sensor device with non-parallel sensing planes {Golf ball speed / direction measuring device having sensing element arrays with non-parallel sensing planes}

The present invention relates to a sensor device for detecting the initial velocity and direction of the golf ball used in golf hitting practice and screen golf, more specifically, to improve the vertical direction detection accuracy without including a structure installed in the vertical direction The present invention relates to a sensing element array arrangement structure and a golf ball speed / direction sensing method capable of widening a vertical sensing area.

Since the final position of the golf ball is changed depending on the initial speed and direction of the golf ball, if the initial motion characteristics of the golf ball are accurately detected, there is an advantage that golf can be enjoyed through the golf simulator without going to the golf course.

The existing golf ball sensor device that detects the movement state of the golf ball at the beginning of the golf simulation device mainly uses a light sensing element composed of a laser or an infrared light emitting element and a light receiving element, and when the golf ball passes through the sensing path of the light sensing element. It adopts the structure to detect the golf ball. If the golf ball passes through the non-sensing path of the optical sensor element, the golf ball cannot be detected. In the conventional golf ball sensor device, the horizontal coordinate sensing element and the vertical coordinate sensing element are arranged in an array form at intervals smaller than the diameter of the golf ball, and the sensing path of the vertical coordinate sensing element and the horizontal coordinate sensing element are different from each other. The photosensitive array is arranged to intersect.

US Patent No. 5626526 has the advantage that the horizontal coordinate sensing array is placed horizontally on the ground and the vertical coordinate sensing array is disposed in the direction protruding from the ground to detect the horizontal / vertical coordinates with the same precision. However, in US Patent No. 5626526, one axis of the sensor array protrudes to the ground, which may hit a golf ball or a golf club protruding sensor.

Republic of Korea Patent Registration No. 0553036 and Republic of Korea Patent Publication No. 2010-0111559 installed the horizontal coordinate sensor and vertical coordinate sensor in a horizontal state with the ground so that there is no protruding part to the ground. As shown in FIG. 1, the horizontal coordinate sensing element 1 is disposed to have a sensing path 2 in the vertical direction, and the vertical coordinate sensing element 3 is disposed at an angle so that the vertical coordinate sensing path 4 detects the horizontal coordinate. Acute angles were made in the same plane as the path 2 or in planes parallel to each other as shown in FIG. 2. This method detects both the horizontal and vertical coordinates when the golf ball 5 passes in the area where the sensing path of the horizontal coordinate sensing element and the sensing path of the vertical coordinate sensing element cross, and in the area where the sensing path does not intersect. Only one type of coordinate can be detected. In addition, depending on the tilt angle of the vertical coordinate sensing element, the detection area and the vertical coordinate detection precision are different. If the detection area is enlarged, the vertical coordinate detection accuracy is deteriorated.

The present invention provides a light sensing array structure of a golf ball sensor device that is symmetrical to the left and right detection area and can increase the vertical direction detection accuracy without any part protruding to the ground.

The golf ball sensor device of the present invention uses two or more arrays of sensing elements arranged in a one-dimensional array, but provides a structure in which at least two array sensing paths are formed at different angles from the ground toward the golfer. This structure makes the ratio of the time it takes to pass through the array sensing paths at different angles from the moment of the golf ball hitting the golf ball according to the direction of the golf ball. Make it possible.

The golf ball sensor device of the present invention is convenient to use because there is no protruding portion to the ground, and provides the same detection area in the golf ball travel direction, and the vertical speed accuracy is not determined by the distance between the sensing elements and the golf ball is the starting point. Since the vertical velocity precision is determined by the time and time it takes to pass through the sensing path of the array, it provides the effect of increasing the vertical precision of the golf ball sensor device without increasing the number of sensing elements.

1 is a front view showing a sensing path and a sensing area of a conventional sensor device.
Figure 2 is a side view showing a detection path of the conventional sensor device.
Figure 3 is a perspective view showing a preferred embodiment (α2> α1) including the golf ball start detector of the present invention.
Figure 4 is a side view showing a preferred embodiment (α2> α1) including the golf ball start detector of the present invention.
Figure 5 is a plan view showing a preferred embodiment (α2> α1) including the golf ball start detector of the present invention.
Figure 6 is a perspective view showing a preferred embodiment (α2> α1) without the golf ball start detector of the present invention.
Figure 7 is a side view showing a preferred embodiment (α2> α1, α0 = α2) without the golf ball start detector of the present invention.
8 is another preferred embodiment without the golf ball start detector of the present invention
Side view showing an example (α2> α1, α0 = α1).
Figure 9 is a side view showing another preferred embodiment (α2 <α1) including a golf ball start detector of the present invention.
Figure 10 is a side view showing another preferred embodiment (α2 <α1, α0 = α2) without the golf ball start detector of the present invention.
Figure 11 is a side view showing another preferred embodiment (α2 <α1, α0 = α1) without the golf ball start detector of the present invention.

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 3, FIG. 4, and FIG. 5 showing a preferred embodiment of the present invention, the present invention is perpendicular to the virtual center straight virtual path 71 of the golf ball by a distance L1 from the starting point 41 of the golf ball. To form another angle (α2) with the sensing element array (20) installed to form a constant angle (α1) with the ground and perpendicular to the virtual center straight straight path (71) apart by another constant distance (L2). Another sensing element array 10 is installed, a golf ball starting detector 40, and a golf ball speed / direction calculating device 50.

In the sensing element arrays 10 and 20, a plurality of sensing elements 11 and 21 are arranged at regular intervals, and the sensing elements 11 and 21 emit light through the sensing paths 12 and 22 in a linear direction. It is configured to receive the light reflected from the golf ball and return the detection situation to the speed / direction calculating device 50.

The sensing paths 12 of the sensing elements 11 belonging to the sensing element array 10 installed at a distance L2 farthest from the starting point of the golf ball constitute a sensing path plane having a constant angle α2 with the ground. The sensing paths 22 of the sensing elements 21 belonging to the other sensing element array 20 constitute a sensing path plane having another angle α1 with the ground, so that the two sensing planes are not parallel to each other. , α2) is arranged differently.

The distance between the sensing elements 11 and 21 of the sensing element arrays 10 and 20 is set in consideration of the detection accuracy of the horizontal angle β, and the number of elements in each array is set in consideration of the golf ball sensing region.

The method of measuring the speed and direction of the golf ball using the sensing element array arranged as described above will now be described.

As shown in FIG. 4, when the golf ball travels along the straight line 72 from the starting point 41 to the position 44 passing through the first sensing plane and to the position 44 passing through the second sensing plane, the starting point When the time to reach the first sensing plane position 43 at (41) is T1 and the time to reach the second sensing plane position 44 at the starting point 41 is T2, the traveling speed in the X and Z directions is Can be expressed as

(One)

(2)

The relationship between the angle θ of the ball traveling direction and the ground and T1, T2, L1, L2 can be expressed by the following equation.

(3)

As shown in FIG. 5, the distance between the sensing elements is W, the position of the element sensed in the first sensing plane is N1 from the virtual center straight path 71, and the position of the element sensed in the second sensing plane is virtually straight forward. Velocity in Y direction when away from path 71 by N2

(4)

or

(5)

Or the average of equations (4) and (5)

(6)

 .

Therefore, if the golf ball detects the device position (N1) and time (T1) as it passes through the first sensing plane from the starting point, and the device position (N2) and time (T2) as it passes through the second sensing plane (Eq. ) To (6), the velocity in the X, Y, and Z directions can be derived.

As shown in FIG. 6, FIG. 7 and FIG. 8 showing another preferred embodiment of the present invention, the present invention arranges another sensing element array 30 in place of the golf ball starting detector, and thus the starting point 41 of the golf ball. A sensing element array 20 installed to form a constant angle α1 with the ground while being perpendicular to the virtually straight forward virtual path 71 of the golf ball by a distance L1 from the center, and a center away from another constant distance L2. Another sensing element array 20 installed to be perpendicular to the straight virtual path 71 to form another angle α2 with the ground, and perpendicular to the central straight virtual path 71 apart by another constant distance L0. And a sensing element array 30 installed so as to be parallel to one of the other monitoring element arrays 10 and 20, and a speed / direction calculating device 50 of the golf ball.

6, 7, and 8, there is no function of detecting the starting point of the golf ball, but the sensing plane pass delay time of the sensing element array 20 from the passing time of the added sensing element array 30. D1), the sensing plane passing delay time D2 of the sensing element array 10 can be sensed, and a method for obtaining the delay times T1 and T2 from the starting point is as follows.

If the delay time from the golf ball starting point to the sensing plane of the added sensing element array 30 is T0, the added sensing element array 30 is parallel to the sensing element array 10.

(7)

In a configuration in which the added sensing element array 30 is parallel to the sensing element array 20

(8)

Since T0 can be calculated by the equation, T1 and T2 are obtained from the following equation from D1 and D2.

(9)

(10)

The speeds of the golf balls in the X, Y, and Z directions are derived from T1, T2 and Eq. (6) and Eq. (6) obtained in Eq.

α0, α1, α2: angle of the sensing plane of the sensing element array from the ground
β: angle formed between the Y-axis speed and the X-axis speed of the golf ball
θ: angle formed between the Z-axis speed and the X-axis speed of the golf ball
1: horizontal coordinate sensing element
2: sensing path of the horizontal coordinate sensing element
3: vertical coordinate sensing element
4: sensing path of vertical coordinate sensing element
5: golf ball passing through the detection path
10, 20, 30: sensing element array
11, 21, 31: sensing element
12, 22, 32: sense path of sensing element
40: golf ball hitting detection device
41: Golf ball position just before hit
42, 43, 44: Golf ball position passing through the sensing path of the sensing element
50: golf ball speed / direction computing device
61: connection line between computing device and computer
62, 63, 64, 65: connection line between computing unit and sensor
71: Virtual path when the golf ball goes straight to the center parallel to the horizon
72: Random path of the golf ball

Claims (2)

A golf ball sensor device consisting of two or more sensing element arrays 10, 20, a speed / direction computing device 50, and a start detector 40, wherein at least two sensing element arrays 10, 20 run straight forward. It is installed on the ground perpendicular to the virtual path 72, the golf ball sensor device characterized in that the installation angle of the sensing plane of one sensing element array 10 and the other sensing element array 20 is different from the ground .
A golf ball sensor device consisting of at least three sensing element arrays 10, 20, 30 and a speed / direction computing device 50, wherein at least three sensing element arrays 10, 20, 30 are forward-centered virtual paths. The sensing plane of the sensing element array 10 and the sensing element array 20 is installed at a different angle from the ground so that the sensing plane of the sensing element array 10 and the other sensing element array 20 is different from each other. Golf ball sensor device characterized in that parallel to the sensing plane of the element array (30).

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