KR101834272B1 - Apparatus and method for estimating velocity and spin of moving object - Google Patents

Abstract

As the subject moves, the subject is irradiated with each light at a predetermined time interval, and each light reflected back from the subject is sensed and determined based on the difference between the time when each light was irradiated and the time when the light was sensed The speed of the subject is calculated from the positional change of the subject and the wavelength of the reflected light reflected from the first side of the subject and the second side of the subject are respectively compared with the wavelength of the irradiated light, A method for measuring a speed and a spin of an object for measuring a spin of a subject from a distance between a first side of the subject and a second side of the subject and a calculated speed difference is calculated.

Description

[0001] APPARATUS AND METHOD FOR ESTIMATING VELOCITY AND SPIN OF MOVING OBJECT [0002]

The disclosed embodiments relate to a method for measuring the speed and spin of a moving subject, and an apparatus for measuring the speed and spin of a moving subject.

In the case of a sports game using a ball, in particular, in the case of golf, it is possible to accurately sense the physical characteristics of a ball being hit by a golfer, and to analyze the ball using the sensed value, To the extent that it has always been done.

Especially, since the ball that is blown by the blow rotates at a very high speed about the axis in the three-dimensional space, a high-performance sensor is needed to measure the velocity and spin of the flying ball. In addition, since a separate camera has to be provided in order to measure the ball speed and spin, there is a problem that expensive equipment must be provided to accurately measure the physical properties of the ball.

One embodiment is a method and apparatus for measuring the speed and spin of a moving subject that can analyze a physical characteristic of a subject more efficiently by simultaneously measuring speed and spin, which are physical characteristics of a moving subject as the batting is applied .

According to an embodiment of the present invention, there is provided a method of measuring a velocity and a spin of a moving object, the method comprising: irradiating each object with light at a predetermined time interval as the object moves; Sensing each light reflected from the subject and returning; Measuring a speed of the subject from a positional change of the subject determined based on a difference between a time when each light is irradiated and a time when the subject is sensed; Calculating a speed difference between the first side of the subject and the second side of the subject by comparing the wavelength of light reflected from the first side of the subject and the second side of the subject and the wavelength of the irradiated light; And measuring the spin of the subject from the distance between the first side of the subject and the second side of the subject and the calculated speed difference.

According to one embodiment, in a method of measuring the velocity and spin of a moving subject, the first side and the second side of the subject are determined so that the distance between the first side of the subject and the second side of the subject corresponds to the diameter of the subject do.

In the method of measuring the speed and the spin of a moving object according to an embodiment, the step of calculating the speed difference may include calculating a difference between the wavelength of the light reflected back from the first side of the object and the wavelength of the irradiated light, Measuring a speed with respect to the first side; And measuring the velocity of the subject relative to the second side from the difference between the wavelength of the light reflected back from the second side of the subject and the wavelength of the irradiated light.

According to one embodiment, in the method of measuring the velocity and spin of a moving subject, the step of measuring the velocity includes the step of determining the position of the subject based on the difference between the time when each light is irradiated and the time when it is sensed .

According to one embodiment, a method of measuring a velocity and a spin of a moving object further includes outputting information regarding a measured velocity and a measured spin.

According to an embodiment of the present invention, there is provided an apparatus for measuring a velocity and a spin of a moving object, the apparatus comprising: a light emitting unit that irradiates an object with light at predetermined time intervals as the object moves; A sensing unit for sensing each light reflected from the subject and returning; A speed measuring unit for measuring a speed of a subject from a positional change of the subject determined based on a difference between a time when each light is irradiated and a time when it is sensed; And a speed difference between the first side of the subject and the second side of the subject is calculated by comparing the wavelength of the returned light reflected from the first side of the subject and the second side of the subject with the wavelength of the irradiated light. And a spin measuring section for measuring the spin of the subject from the distance between the first side of the subject and the second side of the subject and the calculated difference in speed.

In an apparatus for measuring the speed and spin of a moving object according to an embodiment, a first side and a second side of the subject are determined so that the distance between the first side of the subject and the second side of the subject corresponds to the diameter of the subject do.

According to an embodiment, there is provided an apparatus for measuring the speed and spin of a moving object, the apparatus comprising: a spin measurement unit for measuring a speed and a spin of a moving object based on a difference between a wavelength of light reflected from a first side of a subject and a wavelength of irradiated light, The speed is measured and the speed of the subject to the second side is measured from the difference between the wavelength of the light reflected back from the second side of the subject and the wavelength of the irradiated light.

In an apparatus for measuring a velocity and a spin of a moving object according to an embodiment, a velocity measuring unit determines a position of an object based on a difference between a time when each light is irradiated and a time when the light is sensed.

According to one embodiment, an apparatus for measuring a velocity and a spin of a moving object further includes an output unit for outputting information about a measured speed and a measured spin.

A method and apparatus for measuring the velocity and spin of a moving subject according to the present invention is a method for measuring the speed and spin of a moving subject by irradiating light to a moving subject and sensing and analyzing the light reflected by the subject, Speed and spin are measured, it is possible to more effectively analyze the physical characteristics of the subject.

1 is a conceptual diagram for explaining an apparatus for measuring a speed and a spin of a moving object according to an embodiment.
2 is a flowchart illustrating a method of measuring a speed and a spin of a subject according to an embodiment of the present invention.
FIG. 3 is a flowchart for explaining a method of calculating a speed of a subject in more detail according to an embodiment of the present invention. FIG.
4 is a diagram for explaining a method of calculating a speed of a subject in more detail by the measuring apparatus according to an embodiment.
5 is a flowchart for explaining a method of calculating a spin of a subject in more detail according to an embodiment of the present invention.
FIG. 6 is a diagram for explaining a method of calculating a spin of a subject in more detail according to an embodiment of the present invention. FIG.
Figures 7 and 8 are block diagrams of a measurement device according to one embodiment.

The terms used in this specification will be briefly described, and the present invention will be described in detail.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

When an element is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements as well, without departing from the spirit or scope of the present invention. Also, the terms "part," " module, "and the like described in the specification mean units for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram for explaining an apparatus 100 for measuring a velocity and a spin of a moving object according to an embodiment.

According to one embodiment, an apparatus 100 for measuring a velocity and a spin of a moving object irradiates a subject with light as the subject moves, The speed and spin can be measured. Here, the subject may be a ball that moves due to a blow or the like. Although the subject is not limited to a specific type of ball, in FIG. 1, the golf ball 10 to which a user hits the golf club 10 is described as an example of a subject.

Referring to FIG. 1, the measuring apparatus 100 may irradiate light to the golf ball 10 struck by the user at a predetermined time interval. In addition, the measuring apparatus 100 can sense each light that is reflected back from the golf ball 10 and returns.

The measuring apparatus 100 according to an embodiment measures the difference between the point of time when the light is irradiated to the golf ball 10 and the point of time when the light reflected from the golf ball 10 is sensed, The position can be determined. In addition, the measuring apparatus 100 measures a time point when the light is irradiated and a time point when the light is irradiated to each of the lights irradiated to the golf ball 10 at predetermined time intervals to determine a change in position of the golf ball 10 . The measuring apparatus 100 can measure the velocity of the golf ball 10 from a change in position of the golf ball 10 determined according to a predetermined time.

 The measuring apparatus 100 according to an embodiment may measure the spin of the golf ball 10 by calculating the wavelength change of the light reflected from the golf ball 10 and returned. Due to the Doppler effect, the wavelengths of the light radiated to the golf ball 10 and the light reflected from the golf ball 10 may be different from each other. The wavelength variation of the light reflected by the golf ball 10 may vary depending on the area of the golf ball 10. For example, the wavelength variation of the light reflected from the first side of the golf ball 10 and the wavelength variation of the light reflected from the second side of the golf ball 10 may be different. The measuring apparatus 100 can measure the spin of the golf ball 10 based on the difference in the wavelength variation caused on each side of the golf ball 10. [ This will be described later in more detail with reference to FIG. 5 and FIG.

The measuring device 100 according to one embodiment may output information about the measured speed and spin to the golf ball 10. [ The measuring apparatus 100 outputs information on the speed and spin of the golf ball 10 in the form of images, audio and text, etc. to provide the user with information on the speed and spin of the golf ball 10 can do.

The measuring apparatus 100 according to an embodiment can sense and analyze the light irradiated to the golf ball 10 without having to separately measure the speed and the spin of the golf ball 10, The speed and the spin of the golf ball 10 can be measured.

In the meantime, the above-described example is only one example for more easily illustrating the method of measuring the velocity and the spin of a moving object in accordance with the disclosed embodiment, and the measuring apparatus 100 may be configured such that the object to which the velocity and the spin are measured is a golf ball 10).

FIG. 2 is a flowchart for explaining a method of measuring a speed and a spin of a subject by the measurement apparatus 100 according to an embodiment.

In step S210, the measuring apparatus 100 irradiates the subject with each light at a predetermined time interval as the subject moves.

The measuring apparatus 100 according to one embodiment can detect the movement of a subject by using a sensor provided in the measuring apparatus 100 or a sensor connected to the outside. For example, the measuring apparatus 100 can detect the movement of a subject by using a motion detection sensor, a weight detection sensor, or the like.

Further, the measuring apparatus 100 can irradiate the moving subject with light as the movement of the subject is detected. Here, the measuring apparatus 100 can irradiate the subject with light at predetermined time intervals in order to measure the positional change of the subject. However, this is only an example, and the measuring apparatus 100 may irradiate light to a subject at random.

 In step S220, the measuring apparatus 100 senses each light reflected from the subject and returned.

The measuring apparatus 100 according to an embodiment can measure a time when light is sensed when light reflected from a subject is sensed. Further, the measuring apparatus 100 can store information about the time when the light is sensed and the time when the light is irradiated, with respect to each light irradiated to the subject.

In step S230, the measuring apparatus 100 calculates the speed of the subject from the positional change of the subject determined based on the difference between the time when each light was irradiated and the time when it was sensed.

The measuring apparatus 100 according to an embodiment can determine the position of a subject based on a difference between a point of time when light is irradiated and a point of time when the light is irradiated. In addition, the measuring apparatus 100 can determine the positional change of the subject by measuring the irradiated and sensed points of time for each light irradiated to the subject at predetermined time intervals. In addition, the measuring apparatus 100 can determine the speed of the subject by analyzing the positional change of the subject in a predetermined time interval.

In step S240, the measuring apparatus 100 compares the wavelength of the returned light reflected from each of the first side of the subject and the second side of the subject with the wavelength of the irradiated light to determine a speed difference between the first side and the second side of the subject .

The measuring apparatus 100 according to the embodiment can calculate the difference between the wavelength of the light reflected on the first side and the side of the second side reflected by the subject and the wavelength of the light irradiated on the subject. For example, in a subject, a portion of a distance away from the measuring apparatus 100 by spin causes a larger change in wavelength, and a portion of the portion near the measuring apparatus 100 due to spin may cause a relatively small change in wavelength. The measurement apparatus 100 calculates a change in wavelength on each side of the subject to determine whether each side of the subject is a part distant from the measuring apparatus 100 by spin or a part near the measuring apparatus 100 by spin Can be determined.

On the other hand, the measuring apparatus 100 can calculate the speed difference between the first side and the second side according to the difference between the wavelength change on the first side and the wavelength change on the second side.

In step S250, the measuring apparatus 100 measures the spin of the subject from the distance between the first side of the subject and the second side of the subject and the calculated speed difference.

According to one embodiment, the measuring apparatus 100 can measure the spin of a subject by calculating the velocity difference between the first side and the second side according to the distance between the first side of the subject and the second side of the subject. A specific method of measuring the spin in the measuring apparatus 100 will be described later in detail with reference to FIG.

FIG. 3 is a flowchart for explaining in greater detail a method for measuring a speed of an object by the measuring apparatus 100 according to an embodiment.

In step S310, as the subject moves, the measuring apparatus 100 can irradiate the subject with each light at a predetermined time interval. Here, the time at which each light is irradiated on the subject can be determined according to the setting of the user.

On the other hand, step S310 may correspond to step S210 described above with reference to FIG.

In step S320, the measurement apparatus 100 can sense each light reflected from the subject and returned.

Meanwhile, step S320 may correspond to step S220 described above with reference to FIG.

In step S330, the measurement apparatus 100 can determine the position of the subject based on the difference between the time when each light was irradiated and the time when it was sensed.

The measuring apparatus 100 according to the embodiment can irradiate the subject with light at every t time. For example, the measuring apparatus 100 can irradiate the subject with light at time t and time 2t. The measuring apparatus 100 can measure the time that the light irradiated at the time t is reflected from the subject and return to determine the position of the subject corresponding to the point of time when the light is irradiated. Further, the measuring apparatus 100 can measure the time when the light irradiated at the time point 2t is reflected from the subject and return, and can determine the position of the subject corresponding to the 2t point of time when the light is irradiated.

In step S340, the measuring apparatus 100 can measure the speed of the subject in accordance with the positional change of the subject with respect to time.

The measuring apparatus 100 according to the embodiment can determine the positional change of the subject according to the time interval at which the light is irradiated when the position of the subject is determined from when the light is irradiated to the subject and when the sensed point is determined. The measuring apparatus 100 can measure the speed of the subject from the position of the subject which changes according to the time interval at which the light is irradiated.

In step S350, the measurement apparatus 100 can output the measured object speed.

The measurement apparatus 100 according to an exemplary embodiment may output information on the speed of the subject in the form of an image, sound, text, or the like, in order to provide the user with information about the subject.

FIG. 4 is a diagram for explaining in more detail a method by which the measuring apparatus 100 according to the embodiment calculates the speed of a subject.

4 shows the subject 410 at time t and the subject 420 at time 2t. The subject can move in a direction away from the measuring device as the striking is applied.

The measuring apparatus 100 according to an embodiment can measure the time that the subject 410 is irradiated with light at time t and the irradiated light is reflected back from the subject. The measuring apparatus 100 can determine the position of the subject by (x1, y1, y2) using the measured time.

Further, the measuring apparatus 100 can irradiate the subject 420 with light at the time point of 2t, and measure the time when the irradiated light is reflected back from the subject. The measuring apparatus 100 can determine the position of the subject (x2, y2, z2) using the measured time.

The measuring apparatus 100 according to the embodiment can calculate the speed s of the subject by the following Equation 1 using the difference between the position of the subject measured at time t and the position of the subject measured at time 2t .

[Equation 1]

On the other hand, the measuring apparatus 100 may calculate the moving direction d of the subject and the firing angle i based on the following equations (2) and (3).

 &Quot; (2) "

/

/

&Quot; (3) "

/

/

The measuring apparatus 100 according to an embodiment can measure the speed of a moving object from the calculated speed, moving direction, and launch angle.

On the other hand, the measuring apparatus 100 can stop irradiating the subject with light when the position of the subject is not changed as a result of irradiating the subject with light for a predetermined period of time and measuring the position of the subject.

5 is a flowchart for explaining a method of calculating a spin of a subject in more detail by the measuring apparatus 100 according to an embodiment.

In step S510, the measuring apparatus 100 can irradiate the subject with each light at a predetermined time interval as the subject moves.

On the other hand, step S510 may correspond to step S210 described above with reference to FIG.

In step S520, the measuring apparatus 100 can sense each light reflected from the subject and returned.

On the other hand, step S520 may correspond to step S220 described above with reference to FIG.

In step S530, the measuring apparatus 100 can measure the velocity of the object to the first side from the difference between the wavelength of the light reflected back from the first side of the object and the wavelength of the irradiated light.

Here, the wavelength of the light irradiated to the subject may change due to the Doppler effect. For example, assuming that the first side of the subject is located at the top of the subject, the light reflected back from the first side of the subject has a blue shift in which the wavelength shifts to a shorter wavelength than the wavelength of the irradiated light, A phenomenon may occur.

The measurement apparatus 100 according to an embodiment can measure the velocity of the object on the first side based on the length of the wavelength reflected back from the first side of the object, the velocity of the irradiated light, and the wavelength of the irradiated light .

In step S540, the measuring apparatus 100 can measure the velocity of the subject on the second side from the difference between the wavelength of the light reflected back from the second side of the subject and the wavelength of the irradiated light.

Assuming that the second side of the subject is located at the lower end of the subject, according to one embodiment, the light reflected back from the second side of the subject includes a red movement (red shift phenomenon may occur.

The measurement apparatus 100 according to an embodiment can measure the velocity of the subject on the second side based on the length of the wavelength reflected back from the second side of the subject, the velocity of the irradiated light, and the wavelength of the irradiated light .

In step S550, the measurement apparatus 100 can measure the spin of the subject from the difference between the distance between the first side of the subject and the second side of the subject, the speed with respect to the first side, and the speed with respect to the second side.

The measuring apparatus according to an embodiment can calculate the difference between the speed at the second side of the subject and the speed at the first side of the subject. The measuring apparatus can determine the speed difference between the second side and the first side of the calculated subject with respect to the distance between the first side and the second side of the subject as the spin of the subject. On the other hand, the first side and the second side can be set on the object so that the distance between the first side and the second side of the subject corresponds to the diameter of the subject.

In step S560, the measurement apparatus 100 can output the measured object's spin.

The measurement apparatus 100 according to an exemplary embodiment may output information about a spin of a subject in the form of an image, sound, text, or the like, so as to provide the user with information about the subject.

FIG. 6 is a diagram for explaining in detail a method of measuring a spin of a subject by the measuring apparatus 100 according to an embodiment.

Referring to FIG. 6, as spins are generated on a moving subject, the velocities at the center 610, the first side 620, and the second side 630 of the subject may be different from each other. Here, the velocity at the center 610 of the subject can be measured according to the method described above with reference to Figs. 3 and 4. Fig.

In the case of the center 610 of the subject, as the distance from the measuring apparatus 100 increases, the wavelength of the light reflected back from the center 610 of the subject can be longer than the wavelength of the irradiated light.

)의 길이, 조사된 광의 파장(

)의 길이 및 조사된 광의 속도(c)에 기초하여, 아래의 수학식 4에 따라 피사체의 제 1 측에 대한 속도(

)를 결정할 수 있다. On the other hand, as the first side 620 of the subject generates a spin toward the measuring apparatus 100, the wavelength of the light reflected and reflected back to the center 610 of the subject can be shortened. The measurement device 100 according to one embodiment may be configured to measure the wavelength (e.g.,

), The wavelength of the irradiated light (

) On the first side of the subject according to the following equation (4) based on the length of the subject

Can be determined.

&Quot; (4) "

)의 길이, 조사된 광의 파장(

)의 길이 및 조사된 광의 속도(c)에 기초하여, 아래의 수학식 4에 따라 피사체의 제 2 측에 대한 속도(

)를 결정할 수 있다.Further, as the second side 630 of the subject generates a spin toward the direction opposite to the measuring apparatus 100, the wavelength of the light reflected and returned may be longer than that of the center 610 of the subject. The measurement apparatus 100 according to an embodiment may be configured to measure a wavelength (e.g.,

), The wavelength of the irradiated light (

) On the second side of the subject in accordance with the following equation (4) based on the length of the subject

Can be determined.

&Quot; (5) "

)는 피사체의 중심(610)에 대한 속도와 스핀(w)과 피사체의 반지름(r)을 곱한 값의 차에 의해 결정될 수 있다. 또한, 피사체의 제 2 측(630)에 대한 속도(

)는 피사체의 중심(610)에 대한 속도와 스핀(w)과 피사체의 반지름(r)을 곱한 값의 합에 의해 결정될 수 있다. Referring to FIG. 6, the speed (< RTI ID = 0.0 >

Can be determined by the difference between the velocity of the object 610 at the center and the value obtained by multiplying the spin w and the radius r of the object. Also, the speed (< RTI ID = 0.0 >

May be determined by the speed of the subject at the center 610 and the sum of the values obtained by multiplying the spin w and the radius r of the subject.

) 및 제 2 측(630)에 대한 속도(

)로부터 다음의 수학식 6에 기초하여 피사체의 스핀(w)을 측정할 수 있다.Accordingly, the measuring device 100 according to one embodiment may be configured to measure the velocity (e.g.,

) And the second side 630

, The spin (w) of the subject can be measured based on the following expression (6).

&Quot; (6) "

Figures 7 and 8 are block diagrams of a measurement device 100 according to one embodiment.

Only the components related to the present embodiment are shown in the measuring apparatus 100 shown in Fig. 7, the measuring apparatus 100 according to an embodiment may include a light emitting unit 110, a sensing unit 120, a velocity measuring unit 130, and a spin measuring unit 140 . However, not all illustrated components are required. The measurement apparatus 100 may be implemented by more components than the components shown, and the measurement apparatus 100 may be implemented by fewer components. 8, the measuring apparatus 100 may further include an output unit 150 in addition to the light emitting unit 110, the sensing unit 120, the velocity measuring unit 130, and the spin measuring unit 140. [ .

The light emitting unit 110 irradiates the subject with each light at a predetermined time interval as the subject moves.

The light emitting unit 110 according to one embodiment may include a light source. The light emitting unit 110 can irradiate the light emitted from the light source to the subject. Here, the outputted light may be pulse or phase modulated light. The light source may include, for example, a laser diode (LD) for outputting short-wavelength light, a light emitting diode (LED), and a light emitting diode having a multi-cell structure.

The sensing unit 120 senses each light reflected from the subject and returned.

The sensing unit 120 may convert the sensed light into an electrical signal. The sensing unit 120 may be an image sensor including a photo diode or a complementary metal-oxide semiconductor (CMOS).

The speed measuring unit 130 measures the speed of the subject from the positional change of the subject determined based on the difference between the time when each light was irradiated and the time when it was sensed.

The speed measuring unit 130 according to the embodiment can determine the position of the subject based on the difference between the time when each light is irradiated and the time when the light is sensed. Accordingly, the speed measuring unit 130 can determine a positional change of the subject according to a predetermined time interval based on the position of the subject determined based on the irradiated light.

The spin measuring unit 140 compares the wavelength of the light that is reflected back from the first side of the subject and the second side of the subject and the wavelength of the irradiated light to determine the speed difference between the first side of the subject and the second side of the subject . Further, the spin measuring unit 140 measures the spin of the subject from the distance between the first side and the second side of the subject and the calculated difference in speed.

The spin measuring unit 140 according to an embodiment can measure the velocity of the subject on the first side from the difference between the wavelength of the light reflected back from the first side of the subject and the wavelength of the irradiated light. Further, the spin measuring unit 140 can measure the velocity of the subject on the second side from the difference between the wavelength of the light reflected back from the second side of the subject and the wavelength of the irradiated light.

The output unit 150 may include a display unit 151 and an audio output unit 152.

The display unit 151 according to one embodiment may display information acquired by the measurement apparatus 100 in the form of an image or text. For example, the display unit 151 may display information on at least one of the speed and the spin of the subject measured by the measuring apparatus 100 in the form of an image or a text.

The sound output unit 152 according to an embodiment may output the information acquired by the measurement apparatus 100 in a sound form. For example, the sound output unit 152 may output information about at least one of the velocity and the spin of the subject measured in the measurement apparatus 100 in the form of a sound.

An apparatus according to the present invention may include a processor, a memory for storing and executing program data, a permanent storage such as a disk drive, a communication port for communicating with an external device, a user interface such as a touch panel, a key, Devices, and the like. Methods implemented with software modules or algorithms may be stored on a computer readable recording medium as computer readable codes or program instructions executable on the processor. Here, the computer-readable recording medium may be a magnetic storage medium such as a read-only memory (ROM), a random-access memory (RAM), a floppy disk, a hard disk, ), And a DVD (Digital Versatile Disc). The computer-readable recording medium may be distributed over networked computer systems so that computer readable code can be stored and executed in a distributed manner. The medium is readable by a computer, stored in a memory, and executable on a processor.

All documents, including publications, patent applications, patents, etc., cited in the present invention may be incorporated into the present invention in the same manner as each cited document is shown individually and specifically in conjunction with one another, .

In order to facilitate understanding of the present invention, reference will be made to the preferred embodiments shown in the drawings, and specific terminology is used to describe the embodiments of the present invention. However, the present invention is not limited to the specific terminology, Lt; / RTI > may include all elements commonly conceivable by those skilled in the art.

The present invention may be represented by functional block configurations and various processing steps. These functional blocks may be implemented in a wide variety of hardware and / or software configurations that perform particular functions. For example, the present invention may include integrated circuit configurations, such as memory, processing, logic, look-up tables, etc., that may perform various functions by control of one or more microprocessors or other control devices Can be adopted. Similar to the components of the present invention that may be implemented with software programming or software components, the present invention may be implemented as a combination of C, C ++, and C ++, including various algorithms implemented with data structures, processes, routines, , Java (Java), assembler, and the like. Functional aspects may be implemented with algorithms running on one or more processors. Further, the present invention can employ conventional techniques for electronic environment setting, signal processing, and / or data processing. Terms such as "mechanism", "element", "means", "configuration" may be used broadly and are not limited to mechanical and physical configurations. The term may include the meaning of a series of routines of software in conjunction with a processor or the like.

The specific acts described in the present invention are, by way of example, not intended to limit the scope of the invention in any way. For brevity of description, descriptions of conventional electronic configurations, control systems, software, and other functional aspects of such systems may be omitted. Also, the connections or connecting members of the lines between the components shown in the figures are illustrative of functional connections and / or physical or circuit connections, which may be replaced or additionally provided by a variety of functional connections, physical Connection, or circuit connections. Also, unless explicitly mentioned, such as "essential "," importantly ", etc., it may not be a necessary component for application of the present invention.

The use of the terms " above " and similar indication words in the specification of the present invention (particularly in the claims) may refer to both singular and plural. In addition, in the present invention, when a range is described, it includes the invention to which the individual values belonging to the above range are applied (unless there is contradiction thereto), and each individual value constituting the above range is described in the detailed description of the invention The same. Finally, the steps may be performed in any suitable order, unless explicitly stated or contrary to the description of the steps constituting the method according to the invention. The present invention is not necessarily limited to the order of description of the above steps. The use of all examples or exemplary language (e.g., etc.) in this invention is for the purpose of describing the invention in detail and is not to be construed as a limitation on the scope of the invention, It is not. It will also be appreciated by those skilled in the art that various modifications, combinations, and alterations may be made depending on design criteria and factors within the scope of the appended claims or equivalents thereof.

Claims (10)

Continuously irradiating the subject with light at a predetermined time interval as the subject moves in a direction away from the measurement device when the subject is struck;
Sensing each light reflected from the subject and returning;
Measuring a positional coordinate of the subject at a predetermined time interval based on a difference between a time when each light is irradiated and a time when the light is sensed;
Calculating the speed of the subject using the position coordinates of the subject and the viewpoints of the respective position coordinates, which are determined by sensing the respective lights;
Measuring a speed of the subject relative to a first side from a difference between a wavelength of the light reflected back from the first side of the subject and a wavelength of the irradiated light;
Measuring a speed of the subject with respect to a second side from a difference between a wavelength of the light reflected back from the second side of the subject and a wavelength of the irradiated light;
Calculating a speed difference between a first side of the subject and a second side of the subject; And
Measuring a speed of the moving subject and measuring a spin of the subject from the distance between the first side of the subject and the second side of the subject corresponding to the diameter of the subject and the calculated speed difference Way. 2. The method according to claim 1, wherein the step of calculating the speed of the subject comprises:
calculating the speed of the subject using the difference between the positional coordinates of the subject measured at time t and the positional coordinates of the subject measured at time t 2t,
Calculating a moving direction in which the subject moves from a time point t to a time point t 2t using the position coordinates of the subject measured at the time t and the position coordinates of the subject measured at the time point 2t,
Calculating a firing angle of the subject from a time t to a time t 2t using the position coordinates of the subject measured at the time t and the position coordinates of the subject measured at a time t 2t,
And calculating the speed of the moving subject from the calculated speed, moving direction, and launch angle. The method according to claim 1,
Further comprising the step of stopping the light irradiation to the object when the position of the object is not changed in the step of measuring the position coordinates of the object, How to measure. delete The method according to claim 1,
And outputting the measured velocity and information about the measured spin. ≪ Desc / Clms Page number 20 > A light emitting unit for continuously irradiating each of the light beams with a predetermined time interval toward the moving object as the object moves in the far direction by being hit;
A sensing unit for sensing each light reflected from the subject and returning;
The position coordinates of the subject are measured at predetermined time intervals based on the difference between the time when each light is irradiated and the time when the light is sensed, and the position coordinates of the subject determined by sensing the light, A speed measuring unit for calculating a speed of the subject by using a time point of a coordinate; And
Measuring a speed of the subject with respect to the first side from a difference between a wavelength of the light reflected back from the first side of the subject and a wavelength of the irradiated light, and measuring a speed of the light reflected from the second side of the subject, Measuring a speed of the subject relative to the second side from a difference between wavelengths of the irradiated light and calculating a speed difference between a first side of the subject and a second side of the subject; And a spin measuring section for measuring a distance between the first side of the subject corresponding to the diameter of the subject and the second side of the subject and a spin measurement section for measuring the spin of the subject from the calculated difference in speed, . 7. The apparatus according to claim 6,
the speed of the subject is calculated using the difference between the positional coordinates of the subject measured at the time t and the positional coordinates of the subject measured at the time point 2t and the position coordinates of the subject measured at the time t and the time The moving direction of the subject moved from the time t to the time t 2t is calculated using the position coordinates of the subject and the position coordinates of the subject measured at the time t and the position coordinates of the subject measured at the time t 2t And calculating the velocity of the moving subject from the calculated velocity, the moving direction and the emission angle, and calculating the velocity of the moving subject . 7. The light-emitting device according to claim 6,
Wherein the speed measuring unit is configured to stop irradiating the subject with light when there is no change in the position of the subject as a result of measuring the position of the subject in the speed measuring unit. delete The method according to claim 6,
And an output unit for outputting the measured velocity and the information about the measured spin.

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