KR100944381B1 - Sensing device for putting simulation apparatus and sensing method for the same - Google Patents

Abstract

PURPOSE: A sensing device for a putting simulation apparatus and a sensing method thereof are provided, which can obtain excellent performance using cheap LED element. CONSTITUTION: A sensing device for a putting simulation apparatus includes a first sensor part(200) equipped in one side of the putting mat; a second sensor part(300) equipped in the other side of the putting mat; a primary light-receiving part(210) which is equipped in one side of the first sensor part and receives the light; a second light-receiving part(220) which is equipped in the other side of the first sensor part and is distanced from the primary light-receiving part; a first LED part(310) which is equipped in one side of the second sensor part and irradiates the light to the primary light-receiving part and the second light-receiving part at the same time; and a second LED part(320) which irradiates the light to the primary light-receiving part and the second light-receiving part at the same.

Description

SENSING DEVICE FOR PUTTING SIMULATION APPARATUS AND SENSING METHOD FOR THE SAME}

The present invention relates to a sensing device of a putting simulation apparatus and a sensing method thereof, and more particularly, a virtual golf game based on a putt-based golf game with a sense of reality similar to a golf game played on a real field in a home or a small space. The present invention relates to a sensing device for sensing a movement of a golf ball and a sensing method of the sensing device provided in a putting simulation device for implementing the putting simulation.

Recently, as the population of golf has increased, devices for virtual golf simulations have emerged that make it easy to play golf at home or in small spaces to overcome the limitations of playing golf on a real field.

In general, a golf game is a game in which a golf ball is hit from the tee box to the green to put the golf ball into the green's hole-cup. In this case, it is very difficult and difficult part in playing a golf game because it is necessary to hit the golf ball with accurate force and direction by accurately identifying the lie on the green.

Due to the difficulty of putting, golfers who enjoy golfing often practice only putting separately, and in response to these demands, various stretching exercisers for putting practice have appeared.

Furthermore, a putting simulation device has appeared to allow a user to feel the reality as if putting on a green while showing a simulation image as the user puts on the image.

Conventionally, in the putting simulation apparatus described above, a laser sensor or the like is used to measure the speed and direction of a golf ball of a golf ball. There was a costly problem.

The present invention provides a sensing device and a method for sensing the sensing device that can be manufactured at low cost while having the same or better performance as the existing sensing device by using a cheap LED device in sensing the movement of a golf ball in the putting simulation apparatus. do.

Sensing device of the putting simulation apparatus according to an embodiment of the present invention, the first sensor unit provided on one side of the putting mat, and the second sensor unit provided on the other side of the putting mat, the hit golf ball is the first A sensing device of a putting simulation device that senses a movement of a golf ball as it passes between a first sensor unit and a second sensor unit, the sensing device comprising: a first light receiving unit provided at one side of the first sensor unit to receive light; A second light receiving unit provided on the other side of the first sensor unit and provided to be spaced apart from the first light receiving unit by a predetermined distance; A first LED unit provided at one side of the second sensor unit to radiate light to the first light receiving unit and the second light receiving unit; And a second LED unit provided at the other side of the second sensor unit and spaced apart from the first LED unit by a predetermined distance to irradiate light to the first light receiving unit and the second light receiving unit, wherein the first LED unit and the second LED unit are provided. The LED unit is characterized in that configured to blink alternately at a predetermined time interval.

Also preferably, a regulator connected to the first LED part and the second LED part to control the first LED part and the second LED part to blink alternately at a predetermined time interval, and the first light receiving part and the second light receiving part. The control unit may further include a control unit configured to calculate at least one of a moving direction and a moving speed of the golf ball according to a result detected by the first light receiving unit and the second light receiving unit.

Also preferably, the period of the flashing time of the first LED portion and the second LED portion is characterized in that configured to be made at a time interval substantially smaller than 50 μs.

Also preferably, the lighting time of each of the first LED portion and the second LED portion may be configured to be substantially less than 5 μs.

Also preferably, the flashing time of each of the first LED portion and the second LED portion may be configured to be substantially less than 5 μs.

Also preferably, the first light receiving unit and the second light receiving unit may include light receiving elements for outputting pulses having a width equal to or greater than the lighting time width of the first LED unit and the second LED unit, respectively. .

Also preferably, the second sensor unit may include a first light guide unit for guiding light emitted from the first LED unit to be radiated in a range from the first light receiving unit to the second light receiving unit, and in the second LED unit. And a second light guide part configured to guide the generated light to be irradiated in a range from the second light receiving part to the first light receiving part.

Also preferably, the second sensor unit may include a second light guide guiding light emitted from the first LED unit to be irradiated to the second light receiving unit, and light generated from the first LED unit to the second light receiving unit. A second light guide guiding the light emitted from the second light guide, a third light guide guiding light emitted from the second LED part to the second light receiving part, and light emitted from the second LED part; It further comprises a fourth light guide for guiding to be irradiated with.

Also preferably, the first LED portion and the second LED portion may include a primary LED element and a spare LED element that operates when the primary LED element is inoperable, respectively.

On the other hand, the sensing method of the sensing device according to an embodiment of the present invention, the first sensor unit provided on one side of the putting mat, and the second sensor unit provided on the other side of the putting mat, the hit golf ball is In the sensing method of the sensing device for sensing the movement of the golf ball as passing between the first sensor unit and the second sensor unit, the second sensor unit and the first LED unit and the first LED unit so as to be separated from the predetermined distance Flashing alternately provided with a second LED unit at predetermined time intervals; The hitting golf ball blocks light entering the first light receiving unit and the second light receiving unit provided to be separated from the first light receiving unit by a predetermined distance while passing the light emitted from the first LED unit and the second LED unit. Measuring a time value at the time; And calculating at least one of a direction angle and a moving speed of the hit golf ball based on the time value.

Also preferably, the calculating of at least one of the direction angle and the moving speed of the golf ball may include calculating the value of the golf ball by substituting the time value into an empirical formula derived through error correction for a mathematical model based on a trigonometric function. Characterized in that.

Also preferably, wherein the first LED portion and the second LED portion includes a primary LED element and a spare LED element, respectively, and determining whether the output generated from the primary LED element is smaller than a set value; When the output generated from the primary LED element is smaller than the set value, further comprising the step of turning off the main LED element (ON) and on (ON) of the spare LED element.

The sensing device of the putting simulation apparatus and the sensing method thereof according to the present invention have a performance equal to or higher than that of a conventional sensing device by using a cheap LED element in sensing the movement of a golf ball hit by the putting simulation apparatus and at a low cost. It is possible to produce.

With reference to the drawings will be described in more detail with respect to the embodiment of the sensing device and the sensing method of the putting simulation apparatus according to the present invention.

1 is a view schematically illustrating a putting mat used in a putting simulation apparatus.

Various putting simulation devices may exist, but basically, as shown in FIG. 1 on the path where the golf ball passes when the golfer hits the golf ball at a predetermined position of the putting mat 100 for putting. It is preferable that a sensing device is provided.

As shown in FIG. 1, the first sensor unit 200 is provided at one side of the putting mat 100, and the second sensor unit 300 is provided at the other side of the putting mat 100 with the first sensor unit 200. It is installed so as to face the golf ball hit the optical line formed between the first sensor unit 200 and the second sensor unit 300, the speed and direction of the golf ball is detected and calculated.

An example of the sensing apparatuses 200 and 300 illustrated in FIG. 1 is illustrated in more detail in FIG. 2.

As shown in FIG. 2, the first sensor unit 200 and the second sensor unit 300 are provided to be spaced apart from each other by a space between the golf balls.

In addition, the first sensor unit 200 is provided such that the first light receiving unit 210 and the second light receiving unit 220 are spaced apart from each other, and the second sensor unit 300 includes the first LED unit 310 and the second LED unit. 320 is provided to be spaced apart by a predetermined interval.

The first light receiving unit 210 and the first LED unit 310 are provided to correspond to each other in a substantially horizontal position, the second light receiving unit 220 and the second LED unit 320 is also in a substantially horizontal position It is preferably provided to correspond to each other.

Each of the first LED part 310 and the second LED part 320 may include a light emitting diode (LED) element that emits light so as to spread widely at a predetermined angle, respectively. The light is irradiated on the second light receiver 220 so that light is simultaneously received.

The first LED part 310 and the second LED part 320 may alternately blink at predetermined time intervals to irradiate light to each of the light receiving parts 210 and 220 without interference from each other.

Here, the time interval between the first LED part 310 and the second LED part 320 alternately flickering with each other is made to be extremely short in a unit of several μs (units of 10 ^-6 seconds) so that the golf ball is made free from interference of light. It is possible to pass the light irradiated from the second LED portion 320 while passing through the light irradiated from the 1 LED portion 310.

As shown in FIG. 2, the light line of the portion received from the first LED unit 310 by the first light receiving unit 210 is referred to as L11 and the portion of the light receiving unit is received by the second light receiving unit 220. The light line is referred to as L12, and the light line of the portion received from the second LED unit 320 to the first light receiving unit 210 is referred to as L21 and the light line of the portion received to the second light receiving unit 220. Is called L22.

Preferably, the L11 light line and the L22 light line are formed in a substantially horizontal direction and are formed to be substantially parallel to each other, and the L12 light line and the L22 light line are preferably formed to cross each other in a diagonal direction (of course). In fact, two light lines do not intersect, but if irradiated at the same time, it means that the light lines are formed where they will cross).

Although not shown in FIG. 2, the first LED part 310 and the second LED part 320 preferably include a main LED element and a spare LED element, respectively.

Therefore, when the main LED element fails, or other error occurs or the end of life, it is preferable that the main LED element is turned off and the spare LED element is operated instead.

That is, it is determined whether the output generated from the main LED element is smaller than the set value, and when the output generated from the main LED element is smaller than the set value, the main LED element is turned off and the spare LED element is turned on. ON).

Meanwhile, FIGS. 3 and 4 respectively show a more specific configuration of the sensing device shown in FIG. 2, and light for light irradiated from the first LED part 310 and the second LED part 320, respectively. Each embodiment regarding a guide part is shown.

First, a sensing device according to an embodiment of the present invention will be described in detail with reference to FIG. 3.

As shown in FIG. 3, the first sensor unit 200 of the sensing device according to an embodiment of the present invention includes a first light receiving unit 210 and a second light receiving unit 220 in the first sensor case 201. .

As shown in FIG. 3, the first light receiving unit 210 and the second light receiving unit 220 are exposed to the outside to directly receive light emitted from the first LED unit 310 and the second LED unit 320. The first light receiving part 210 and the second light receiving part 220 may be mounted inside the case and may have a through hole formed therein so that light may pass through the inside of the case.

On the other hand, the second sensor unit 300 is preferably configured such that the substrate 330 on which the first LED unit 310 and the second LED unit 320 are mounted is embedded in the second sensor case 301.

The first light guide part 311 guides the light emitted from the first LED part 310 to be radiated in a range from the first light receiving part 210 to the second light receiving part 220, and the second light receiving part 211. The second sensor case 301 includes a second light guide part 322 for guiding the light emitted from the LED part 320 to be radiated from the second light receiving part 220 to the first light receiving part 210. It is preferable to form in.

As shown in FIG. 3, the first light guide part 311 and the second light guide part 322 have light that is widely emitted from the first LED part 310 and the second LED part 320, respectively. The light-receiving unit 210 and the second light-receiving unit 220 is to function to limit the range of light emitted to the extent that can be received, respectively.

The light emitted from the first LED part 310 is guided by the first light guide part 311 so that the light reaches the first light receiving part 210 and the second light receiving part 220 while the L11 light line and the L12 light line are formed. The light emitted from the second LED part 320 is guided by the second light guide part 322 and reaches the first light receiving part 210 and the second light receiving part 220 while the light reaches the L21 light line and L22. Light lines are formed.

In this case, each of the light lines represents a line of light emitted from the first LED part 310 and the second LED part 320 to be received by the first light receiving part 210 and the second light receiving part 220, respectively. The range of light irradiated from the LED unit 310 is not necessarily limited to the range of the L11 to L12 light lines, and the size or shape of the first light guide unit 311 is determined so that it can be irradiated in a slightly wider range. Can be done.

In addition, the range of light irradiated from the second LED unit 320 is not limited to the range of the L21 to L22 light lines, but the size of the second light guide unit 322 can be irradiated in a wider range. The shape and the like can be determined.

On the other hand, with reference to Figure 4 will be described in detail with respect to the sensing device according to another embodiment of the present invention.

As shown in FIG. 4, the first sensor unit 200 of the sensing device according to another embodiment of the present invention has a first light receiving unit 210 and a second light receiving unit 220 built into the first sensor case 201. do.

As shown in FIG. 4, the first light receiving unit 210 and the second light receiving unit 220 are exposed to the outside to directly receive light emitted from the first LED unit 310 and the second LED unit 320. The first light receiving part 210 and the second light receiving part 220 may be mounted inside the case and may have a through hole formed therein so that light may pass through the inside of the case.

On the other hand, the second sensor unit 300 is preferably configured such that the substrate 330 on which the first LED unit 310 and the second LED unit 320 are mounted is embedded in the second sensor case 301.

The first light guide 311a guiding the light emitted from the first LED unit 310 to be irradiated to the first light receiving unit 210 and the light emitted from the first LED unit 310 are included in the first LED unit 310. The second light guide 311b for guiding the second light receiving unit 220 to be irradiated is preferably formed at a position corresponding to the first LED unit 310 of the second sensor case 301.

In addition, the third light guide 322a for guiding the light emitted from the second LED unit 320 to be irradiated to the first light receiver 210 and the light emitted from the second LED unit 320 are The fourth light guide 322b for guiding the second light receiving unit 220 to be irradiated is preferably formed at a position corresponding to the second LED unit 320 of the second sensor case 301.

The first light guide 311a limits a range in which light is emitted so that the light emitted from the first LED unit 310 is directed to the first light receiving unit 210, and the second light guide 311b is the first LED. The range in which the light is emitted is limited so that the light emitted from the unit 310 is directed to the second light receiving unit 220.

In addition, the third light guide 322a limits a range in which the light is emitted so that the light emitted from the second LED unit 320 is directed to the first light receiving unit 210, and the fourth light guide 322b is the second light guide 322b. The range in which the light is emitted is limited so that the light emitted from the LED unit 320 is directed to the second light receiving unit 220.

The light emitted from the first LED unit 310 is guided by the first light guide 311a, and the light reaches the first light receiving unit 210 to form an L11 light line, and emits the light from the first LED unit 310. As the light is guided by the second light guide 311b and the light reaches the second light receiving unit 220, an L12 light line is formed, and the light emitted from the second LED unit 320 is the third light guide 322a. L21 light line is formed while the light reaches the first light receiving unit 210, and the light emitted from the second LED unit 320 is guided by the fourth light guide 322b to guide the light. As light reaches 220, an L22 light line is formed.

At this time, the range of light passing through each of the light guides 311a, 311b, 322a, and 322b is not limited so small that light can reach the light receiving parts 210 and 220 through the respective through holes 211 and 222. It is preferable to set the size, shape and the like of each of the light guides 311a, 311b, 322a and 322b.

On the other hand, with reference to Figure 5 will be described with respect to the control system of the sensing device according to an embodiment of the present invention.

As shown in FIG. 5, the first LED part 310 and the second LED part 320 are connected to the regulator R, and the first light receiving part 210 and the second light receiving part 220 are connected to the controller M. As shown in FIG. Connected and controlled.

That is, the first LED part 310 and the second LED part 320 are alternately blinked by the regulator R at predetermined time intervals. In addition, the control unit M measures a time value at the moment when each light receiving unit 210 or 220 detects a golf ball, and calculates a speed or direction related to the golf ball's movement.

6 and 7 illustrate a process in which the hit golf ball passes by breaking the optical line.

As shown in FIGS. 6 and 7, the first LED part 310 and the second LED part alternately blink, because the interval is an extremely short time interval (a few μs to several tens of μs (10 ⁻⁶ second units)). There is no problem in the golf ball passing through the four light lines (L11, L12, L21, L22).

In the case of a putt, the golf ball moves at a speed that is slow enough not to deviate significantly, even if it is less than or greater than approximately 10 m / s.

In other words, assuming that the golf ball travels 10 meters per second, the golf ball travels about 10 ^-5 m (ie, 0.01 mm) for 10 ^-6 seconds.

Assuming that the first LED part 310 and the second LED part 320 blink at a period of approximately 100 μs and that the speed of the golf ball is 10 m / s, the first LED part and the second LED part alternate with each other for 100 μs. 1) The golf ball moves only 1 mm while repeating lighting and flashing lights once.

Therefore, it is possible to accurately detect a golf ball, but in order to increase the accuracy of the golf ball, that is, the precision of the first LED part 310 and the second LED part 320 is set to less than approximately 100 μs If so, the golf ball can detect anything moving a shorter distance, increasing accuracy.

The golf ball is preferably placed at a predetermined position on the virtual center line C passing through the point where the L12 light line and the L21 light line cross each other (actually do not intersect because they alternately flash).

As the golf ball is struck and moved at an angle of θ, as shown in FIG. 6, the L11 light line is first cut off and then the L12 light line is cut off, whereby the first light receiving part 210 and the second light receiving part 220 are driven by the golf ball. The light is blocked and can not receive light, so it detects the golf ball.

When the golf ball passes through the L11 light line and the L12 light line, respectively, the second LED part 320 is turned off.

Meanwhile, the golf ball passing through the L11 light line and the L12 light line sequentially passes the light lines L21 and L22 irradiated from the second LED part 320 as shown in FIG. 7.

When the golf ball passes through the L21 light line and the L22 light line, the first LED part 310 is turned off.

As described above, the graphs of the flickering of the first LED part 310 and the second LED part 320 and the reception of light by the light receiving parts 210 and 220 at this time can be seen through FIG. 8.

In FIG. 8, E1 represents an LED element of the first LED unit 310, E2 represents an LED element of the second LED unit 320, D1 represents a light receiving element of the first light receiver 210, and D2 represents a second element. Each light receiving element of the light receiving unit 220 is shown.

The time interval at which the E1 element is lit is t _E1 and the time interval at which the E2 element is lit is t _E3 -t _E2 . In the graph of FIG. 8, t _E5 -t _E4 = t _E1 .

Since the flashing time interval of the E1 device and the E2 device is a very short time in μs, the lighting time of the E1 device and the E2 device does not have to be the same, but it is preferable that the lighting time intervals of the two devices are substantially the same. . That is, it is preferable to control so that t _E1 = t _E3 -t _E2 .

As shown in FIG. 8, the period T of the blinking time intervals of the E1 device and the E2 device is preferably adjusted to 50 μs or less. More preferably, the period T is preferably set to a value smaller than 50 μs, and when set to about 10 μs, desirable accuracy can be obtained.

If the flashing period T is about 10 μs, the t _E1 is preferably controlled to be substantially less than 5 μs.

In addition, it is preferable that the blinking time interval of the E1 device and the E2 device, that is, t _E2 -t _E1 (t _E4 -t _E3 ) is also controlled to be smaller than 5 μs.

On the other hand, while the E1 element is on, the D1 light receiving element and the D2 light receiving element each generate an output for the time of t _R2 -t _R1 , and while the E2 element is on, the D1 light receiving element and the D2 light receiving element are respectively t _R4. Generate an output for the time of t _R3 .

Since the lighting time intervals of the E1 element and the E2 element are preferably controlled substantially the same, t _R2 -t _R1 = t _R4 -t _R3 .

As shown in FIG. 8, the D1 light receiving element and the D2 light receiving element are preferably provided as a light receiving element for outputting a pulse having a width equal to or greater than the lighting time width of the E1 element and the E2 element.

That is, as shown in FIG. 8, the time ts from the moment when the E1 element is OFF to the moment when the outputs of the D1 and D2 elements become 0 (or the D1 element and D2 from the moment when the E2 element is OFF). The time until the output of the device becomes zero) is preferably provided to be substantially 1 μs or more.

In addition, it is preferable that the delay time t _D , that is, the interval of time at which the output occurs in each of the light receiving elements D1 and D2 when the E1 element or the E2 element is turned on, is provided to be substantially smaller than 1 μs.

9 and 10 will be described in more detail with respect to the golf ball sensing method of the sensing device according to an embodiment of the present invention.

The sensing device according to the present invention basically measures each time value (t1, t2, t3, t4) when passing the L11 to L22 optical lines sequentially when the golf ball 1 is hit and moved from the time value. The moving direction angle θ and the moving speed V of the golf ball are calculated.

First, it is necessary to estimate how precisely the time values t1, t2, t3, t4 need to be measured.

In FIG. 9, assume that A is approximately 0.1 m and B is approximately 0.2 m. In the case of putting, the maximum speed of the golf ball is assumed to be 10 m / s because the speed of the ball is several meters per second.

When the precision of the golf ball's moving direction angle θ is 1/100 of the angle α between the center line C and the first light receiving portion 210, t32 / t41 should have an accuracy within 1%. Where t32 = t3-t2 and t41 = t4-t1.

The fact that the ratio of t32 / t41 should have a precision within 1% means that each of the values of t32 and t41 should have a precision within 1%.

When the maximum speed of the golf ball is 10 m / s, the minimum value of t41 may be considered to be 0.01 s. For the 1% accuracy, the time required for the golf ball to pass through the L11 light line to the L22 light line requires a precision of 0.01s divided by 100, that is, about 0.0001 s (100 μs).

Therefore, the conclusion that the time interval, i.e., the period T, between one of the first LED part and the second LED part to be turned on, then turned off, and then turned on again should be about 50 μs. This comes out.

Of course, in order to increase the accuracy, it is better to make the period T smaller than 50 μs. However, if the period T is too small, it may not be practically meaningful. Therefore, an appropriate period T should be set in consideration of these points.

Meanwhile, referring to FIGS. 9 and 10, a mathematical model for calculating the moving direction angle θ and the moving speed V of the golf ball from each time value t1, t2, t3, t4 is based on a trigonometric function. Induce.

As shown in FIG. 9, the distance from the initial position of the golf ball 1 to the L11 optical line is referred to as D, and the distance between the L11 optical line and the L22 optical line is referred to as A, and the first sensor unit 200 and the The distance between the two sensor units 300 is called 2B.

The distance between the center line C and the first sensor unit 200 and the distance between the center line C and the second sensor unit 300 are substantially B, respectively.

 The angle formed by the L11 light line and the L12 light line is referred to as β. At this time, the angle formed by the L21 light line and the L22 light line is also substantially β.

The angle between the center line C and the first light receiving unit 210 is denoted by α, the angle of the golf ball moving direction is θ, and the golf ball is denoted by V.

Where the values of A, B, D, α and β are already given values.

In FIG. 9, the L11 light line and the L12 light line of FIG. 8 are shown in more detail. When the golf ball 1 passes through the L11 light line and the L12 light line, respectively, that is, from the t1 instant position to the t2 instant position, respectively. The distance of is called d, the vertical distance between the instant t1 and the instant t2 is called l, and the horizontal distance between the instant t2 is called h.

Where the following equations can be derived.

...(식 1)

... (Equation 1)

...(식 2)

... (Equation 2)

...(식 3)

... (Equation 3)

Substituting Equation 2 into Equation 3, the following Equation 4 can be obtained.

...(식 4)

... (Equation 4)

If Equation 4 and Equation 1 are the same and l is eliminated, only the relation of θ and d appears. Where the values of α, β and D are already given.

...(식 5)

... (Eq. 5)

Similarly, deriving the distance d ₂ from the L11 light line to the L21 light line by the above method yields the following relation.

...(식 6)

... (Equation 6)

Subtracting Equation 5 from Equation 6 yields the following equation.

... (Eq. 7)

Assuming constant velocity for the derivation of the mathematical model, it can be expressed as d = V * t21, d2 = V * t31.

Where t21 = t2-t1 and t31 = t3-t1. That is, t21 is the time from the moment the golf ball cuts the L11 light line to the moment the L12 light line is cut off, and t31 is the time from the moment the golf ball cuts the L11 light line to the moment when the L21 light line is cut off.

Since t31-t21 = t3-t2 = t32, Equation 7 can be summarized as the following equation.

...(식 8)

... (Eq. 8)

Where k = 1 + tanβ * tanα and b = tan ² β.

Meanwhile, as shown in FIG. 9, the following equation holds for the length A.

...(식 9)

... (Eq. 9)

If Equation 8 is divided by Equation 9, the following relational expression can be obtained.

...(식 10)

... (Eq. 10)

Where t = t41 / t32, N = 2 * D * tanβ * k / A, and x = tanθ.

In Equation 10, t is a measured value (t32 and t41 are easily obtained by measuring t1, t2, t3, and t4, respectively), and N and b are both constants because they are given values or preset values.

Equation 10 thus becomes a quadratic equation for x. The quadratic equation in Eq. 10 is given by

...(식 11)

... (Eq. 11)

Since the angle θ of the golf ball in the moving direction does not exceed 90 °, x (= tanθ) is a positive value.

X may be calculated by substituting N and b, which are given in Equation 11, and t, which is derived from the measured time value, and may be calculated through θ = tan ⁻¹ x.

When the moving direction angle θ of the golf ball is calculated, the moving speed of the golf ball may be calculated by Equation 9.

On the other hand, the angle and the moving speed of the golf ball calculated by the mathematical model as described above are mathematically calculated based on many assumptions, there are bound to be some error with the actual angle and speed.

This error can be corrected properly through various experiments and simulations to obtain a final empirical formula.

Therefore, if the golf ball passes only through each optical line, the angle and speed of the golf ball's movement direction can be obtained more accurately according to a predetermined empirical formula obtained through error correction in the mathematical model as described above.

1 is a view showing a putting mat equipped with a sensing device of the putting simulation apparatus according to an embodiment of the present invention.

FIG. 2 is a view showing in more detail with respect to the sensing device according to the embodiment shown in FIG.

3 and 4 are diagrams each showing an embodiment of a sensing device according to the present invention.

5 is a block diagram illustrating a control system of a sensing device according to an embodiment of the present invention.

6 and 7 are views showing the principle of sensing the movement of the golf ball in the sensing device according to an embodiment of the present invention, respectively.

FIG. 8 is a view illustrating a flashing time interval of each LED unit of the sensing device and an output pulse width at each light receiving unit at this time.

9 and 10 are diagrams illustrating a process of deriving a mathematical model based on a trigonometric function to calculate a moving direction angle and a moving speed of a golf ball in a sensing device according to an embodiment of the present invention.

Claims (12)

A first sensor part provided at one side of the putting mat, and a second sensor part provided at the other side of the putting mat, and the golf ball is hit by the golf ball passing between the first sensor part and the second sensor part. In the sensing device of the putting simulation device for sensing the movement, A first light receiving unit provided at one side of the first sensor unit to receive light; A second light receiving unit provided on the other side of the first sensor unit and provided to be spaced apart from the first light receiving unit by a predetermined distance; A first LED unit provided at one side of the second sensor unit to simultaneously irradiate light to the first light receiving unit and the second light receiving unit; And It is provided on the other side of the second sensor unit and provided to be spaced apart from the first LED unit a second LED unit for irradiating light to the first light receiving unit and the second light receiving unit at the same time, The first LED unit and the second LED unit sensing device of the putting simulation device, characterized in that configured to flash alternately at a predetermined time interval. The method of claim 1, A regulator connected to the first LED part and the second LED part to control the first LED part and the second LED part to alternately blink at predetermined time intervals; And a control unit connected to the first light receiving unit and the second light receiving unit to calculate at least one of a moving direction and a speed of the golf ball according to a result detected by the first light receiving unit and the second light receiving unit. Sensing device of the simulation device. The method according to claim 1 or 2, And a period of a flashing time of the first LED portion and the second LED portion is configured to be substantially at a time interval smaller than 50 μs. The method according to claim 1 or 2, And a lighting time of each of the first LED part and the second LED part is substantially less than 5 μs. The method according to claim 1 or 2, And a blinking time of each of the first LED portion and the second LED portion is configured to be substantially less than 5 μs. The method according to claim 1 or 2, The first light receiver and the second light receiver comprises a light receiving element for outputting a pulse having a width equal to or greater than the width of the lighting time of the first LED unit and the second LED unit, respectively. Sensing device. The method according to claim 1 or 2, wherein the second sensor unit, A first light guide part for guiding the light emitted from the first LED part to be radiated in a range from the first light receiving part to the second light receiving part; And a second light guide part for guiding the light generated from the second LED part to be irradiated in a range from the second light receiving part to the first light receiving part. The method according to claim 1 or 2, wherein the second sensor unit, A second light guide guiding light emitted from the first LED unit to be irradiated to the second light receiving unit; A second light guide guiding light emitted from the first LED unit to be irradiated to the second light receiving unit; A third light guide guiding the light emitted from the second LED unit to be irradiated to the second light receiving unit; And a fourth light guide for guiding the light generated by the second LED unit to be irradiated to the first light receiving unit. The method according to claim 1 or 2, And the first LED unit and the second LED unit each include a primary LED element and a spare LED element that operates when the primary LED element is inoperable. A first sensor part provided at one side of the putting mat, and a second sensor part provided at the other side of the putting mat, and the golf ball is hit by the golf ball passing between the first sensor part and the second sensor part. In the sensing method of the sensing device for sensing the movement, Alternately blinking the second sensor unit, the first LED unit and the second LED unit provided to be spaced apart from the first LED unit at predetermined time intervals; The hitting golf ball blocks light entering the first light receiving unit and the second light receiving unit provided to be separated from the first light receiving unit by a predetermined distance while passing the light emitted from the first LED unit and the second LED unit. Measuring a time value at the time; And Calculating at least one of a direction angle and a moving speed of the hit golf ball based on the time value; Sensing method of the sensing device comprising a. The method of claim 10, Computing at least one of the direction angle and the moving speed of the golf ball, And substituting the time value into an empirical formula derived through error correction for a mathematical model based on a trigonometric function. The method of claim 10, The first LED portion and the second LED portion includes a primary LED element and a spare LED element, respectively, Determining whether an output generated from the main LED element is smaller than a set value; And if the output generated from the main LED element is smaller than a set value, turning off the main LED element and turning on the spare LED element.

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