KR200278786Y1 - A Portable Golf Swing Analysis Equipment - Google Patents

Abstract

The present invention relates to a portable golf swing analysis device, more specifically, to measure the motion of the golf club head using an infrared sensor, and using the built-in MCU to analyze the flight path and distance of the golf ball accurate golf swing This is possible with a portable golf swing analyzer.

The device of the present invention aims to facilitate portability, use and storage by integrating all related means so that no external connection device or additional device other than the main body is required.

Description

Portable Golf Swing Analysis Equipment

The present invention relates to a portable golf swing analysis device, more specifically, to measure the motion of the golf club head using an infrared sensor, and using the built-in MCU to analyze the flight path and distance of the golf ball accurate golf swing This is possible with a portable golf swing analyzer.

Golf has a long history and is one of the most gentle sports in modern times. In Korea, the golf population has recently surpassed 3 million, and the number of golf courses and golf practice ranges is increasing day by day, but the supply is still falling short of the demand.

Accordingly, golfers are presented with various devices and methods such as golf exerciser, golf simulation, golf swing guide, golf swing corrector, weight transfer reader, and putting practice mat to improve their skills. For golfers, a swing analysis device is essential for practicing and understanding the correct swing for better training.

In the case of the conventional golf swing analysis and correction device, a swing analyzer for attaching a halogen or the like to the ceiling and separately installing a computer outside to measure the movement of the golf club head using an infrared sensor has been proposed.

The swing analyzer installs a halogen light generating strong light on the ceiling, and the light sensor for detecting the light is arranged in two or more rows on the floor (mat) where the golf ball hits, and the surrounding light is halogen Lights other than lamps should be removed or weakened. At this time, it is difficult to use at a brightness over a certain illuminance, and there is an inconvenience of installation, storage, and movement because the halogen should be moved together when moving the seat.

Another existing technique is a swing analyzer using proximity sensors with proximity sensors arranged on the floor. The swing analyzer has the advantage that there is no need to attach a halogen, etc. to the ceiling, but the simple array (array) array method, each of the independent emission (Infra Red) light and Receiving of IR to each sensor Light) Because the circuit is attached, the cost of the proximity sensor is more expensive than the optical sensor method, and it is difficult to use as a mobile type due to the high current consumption. In addition, the accuracy of the club's movement path is expensive because it is proportional to the number of proximity sensors.

The conventional golf swing analyzer described above has two or more rows of sensors placed on the floor to find the direction of the club and the angle of contact between the club and the ball. If the sensor under the swing mat is an optical sensor, it is necessary to attach a halogen lamp or infrared generator to the ceiling. In addition, in the case of a proximity sensor, the power consumption is high and the price is high due to the increase of each light receiving and light emitting circuit. And it is when all the frames connect the computer to the outside.

In order to solve the above problems, the present invention is compact and easy to carry and move, and is supplied with a power supply as a battery, and the golf club head is measured by measuring the advancing direction of the golf club head and the contact angle when the club head collides with the club speed and tempo. It is to provide a golf swing analysis device and an implementation method capable of accurate swing by informing the golfer of the flight path and distance.

The device of the present invention aims to facilitate portability, use and storage by integrating all related means so that no external connection device or additional device other than the main body is required.

In addition, multiple infrared sensor arrays can be operated sequentially in accordance with the direction of movement of the club to minimize current consumption, and some sensors are inclined at a specific angle in the arrangement of the sensor array to quickly generate speed vectors in the planar coordinate system of the golf club head. It is possible to calculate and provide an economic and accurate swing analysis device.

1 is a structural block diagram of an apparatus according to the present invention

2 is an external view showing an embodiment of the device according to the present invention

3 is a view showing the flight situation of the golf ball and the limit situation of the indoor and outdoor driving range.

4 is a relationship diagram between a golf club and the collision angle of the ball and the flight path of the golf ball.

5 is a layout view of the infrared sensor according to the present invention

6 is a circuit diagram of an infrared light receiving sensor according to the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a device of the present invention, and FIG. 2 illustrates an external shape of an embodiment according to the present invention. Hereinafter, the present invention will be described in detail with reference to FIGS. 1 and 2.

Swing analysis device according to the present invention is a power supply means 512 for supplying power to the device through the battery and the power switch, input button means 513 for golfers to select the type of golf club, the movement of the golf club Infrared sensor means for detecting the 503, the control means 514 for processing data using the information received through the input button and the signal received by the infrared sensor unit and the display means for notifying the processed data to the outside ( 507).

In the device of the present invention configured as described above, the overall appearance of the main body box 501 is usually integrally assembled with a plastic frame, and is compact and easy to carry and move, and a handle 506 is provided.

A rubber plate 502 is installed at a portion of the bottom of the body, and an infrared sensor array is provided below the rubber plate, and a rubber tee 504 is provided on the rubber plate. The rubber tee 504 is removable.

The display means 507 is provided with an LCD screen 508 and a golf course model diagram 510. Nine golf ball flight paths are displayed on the golf course model diagram, and an LED display unit 509 in which a plurality of light emitting diodes are formed to indicate an expected fall point at which the golf ball falls is provided. In this case, the golf course model diagram and the LED display unit may be replaced by the LCD. In addition, visual methods such as the LCD screen 508 and the LED display unit 509 may be acoustically represented by using a microphone.

A projection is formed between the rubber plate and the display means to protect the LCD, the display means, from the golf ball on a plane.

The power supply means 512 is supplied with power through a battery or an adapter, and is provided with a switch to enable on / off control of the power.

The infrared sensor unit 503 is composed of a plurality of light emitting units Ir Tx1 and a light receiving unit Ir Rx2 for detecting the movement of the club in the form of a sensor array, and includes an addition amplifier circuit, an analog selection switch circuit, and a band pass filter. Is connected to the MCU 514.

The sensor array 503 includes a plurality of light receiving units and light emitting units, and the plurality of light emitting units in each sensor array all generate infrared rays to the outside at the same frequency. As such, the reason for causing the infrared light to be emitted at a specific frequency is to distinguish it from the DC infrared component and the high frequency infrared noise (NOISE) component existing in nature.

In the sensor array 503, the analog outputs of the plurality of light receiving sensors are input to one addition amplifier circuit. The output of the addition amplification circuit is converted into a digital signal through an analog selection switch circuit, a band pass filter for selecting the emission frequency band, and an amplification and comparison circuit. The signal is finally compared and calculated through the MCU 514. The presenting means 507 is provided to the golfer visually or audibly.

Prior to explaining the arrangement of the infrared sensor 503 for detecting the movement of the club head in the present invention, the relationship between the flight distance of the club head and the expected flight path of the ball through the impact angle of the club head due to the golfer's swing Will be described with reference to FIGS. 3 to 4.

First, the flight path of the golf ball can be roughly divided into nine as shown in FIG.

(1) Pulled hook: A stroke that starts to the left of the target point and bends to the left more than that.

(2) Pull: A rudder that starts to the left of the target point and pushes straight to the left

(3) Hook: A rudder that bends sharply from right to left.

(4) Draw: A shot that bends slightly from right to left when flying

(5) straight: strokes flying in a straight line

(6) Fade: A ride that bends slightly from left to right

(7) Slice: A stroke that is remarkably bent from left to right.

(8) Push: rudder pushing straight to the right

(9) Push Slice: A rudder that starts to go to the right of the target and bends to the right.

For example, during the course of the golf ball, the slice 7 initially falls to the right while the ball is flying to the left but the spin is released at the falling point.

If the club head travels out-to-out with respect to the centerline of the ball and collides with the ball at an open angle with respect to the angle of the movement direction, the ball movement is initially performed by the movement head. It flies to the left, but at the end of this motion, it is suddenly bent to the right by the spin obtained by the angle of contact with the ball.

In this way, the club head's movement is ultimately an important factor in driving the ball to the desired position in golf.

Therefore, in order to improve the swing performance, a system that accurately measures and analyzes the angle of movement of the club head and the collision angle between the golf ball and the golf ball is required. The flight distance and the expected flight path of the ball are implemented in the device of the present invention.

Looking at the ball's flight path according to the angle of collision between the clubhead and the ball, the distance of the ball is determined by the speed of the clubhead, the ball's elastic modulus, the air resistance, and the loft, which is perpendicular to the ground of the clubhead. It is concluded that, in an athletic environment, as the club number increases, the flying distance decreases.

At this time, the flying distance (or carry) of the ball is determined by the speed of the club head, the elastic modulus of the ball, the air resistance, and the loft which is the vertical angle with the ground of the club head. As the number of wood and iron increases in the club, the value of the loft increases. In the same sports environment, as the club number increases, the flying distance decreases.

Based on the above results, the arrangement of the sensor according to the present invention will be described with reference to FIG. 5.

5 is a view showing a sensor arrangement and its measurement elements according to the present invention, defining each symbol used first.

Two tee sensors 702 and 703 are placed in the y-axis direction so as to be perpendicular to the swing direction in front of the golf tee 701 and 1 to 2 cm of the tee on which the golf ball is placed. Place it at a distance of ₁ d.

On the right side of the proximity sensor, two parallel parallel sensor arrays 704 and 705 are arranged at a distance of d ₁ in the y-axis direction.

In addition, two diagonal sensor arrays 706 and 707 are disposed on the right side of the parallel sensor in parallel with a distance d _{2 in} a direction inclined by θ about the y axis.

Each sensor informs MCU 514 by converting the clubhead into a digital signal that the clubhead is approaching when the clubhead is placed vertically on the sensor.

The MCU 514 measures the time difference as follows during the movement of the club head 710.

Δt ₀ = t _00- t ₀₁

Δt ₁ = t _10- t ₁₁

Δt ₂ = t _20- t ₂₁

Where t ₀₀ , t ₀₁ , t ₁₀ , t ₁₀ , t ₂₀ , and t ₂₁ are the times measured when the club head passes over (or arrives) on the sensor arrays (704, 705, 706, 707), respectively.

The sensor array is composed of a plurality of sensors, but if only one of them detects the first motion of the club head, the times are set to t ₁₀ , t ₁₁ , t ₂₀ , and t ₂₁ , respectively.

It is assumed that there is no change in the motion of the clubhead past two sensor arrays (eg between 704 and 705).

This is because the distance between two parallel sensors is very small compared to the club head motion trajectory in general.

By using Equations (1) and (2), α, which is the contact angle between the club head and the golf ball, can be expressed by the following equation.

And, using the equations (2) and (3), the club velocity vector , And the angle of advance β of the club is developed by the following equation.

Equation (4) and (7) can be used to infer the flight path of the ball shown in FIG. In conclusion, in the above equation (7), it can be seen that the traveling path of the club head is independent of the spacing between the sensors.

Referring to Figure 5 describes the operation of the sensor array to minimize the current consumption of the sensor in the present invention as follows.

Initially powered on and enters standby state. When in the standby state, the sensor array parallel sensor 704 operates. The remaining sensors do not work. To reduce current consumption, the sensor 704 also detects once every few hundred msecs (eg 200 msec) whether the club head is near the tee for the ball's address.

If it is detected that the club head 710 is for a certain time (a few seconds), it enters the operation mode. At this time, the MCU 514 turns on the diagonal sensor array 707 and does not operate the rest.

The time until the club head 710 passes back through the sensor 707 and re-enters is measured and used as a tempo, and when the club head enters the sensor 707, the sensor 707 operates. The MCU 514 sequentially operates the diagonal sensors 706, 707, and the parallel sensor 704 in a manner that saves the operation of another diagonal sensor array 706. Finally, the proximity sensors 702 and 703 are operated simultaneously.

When operating the sensors sequentially, the sensors 707, 708, 705 and 704 operate one at a time. When the club head 710 passes the proximity sensors 702 and 703, it stops the operation of all other sensors, calculates and displays the result on the LCD / LED lamp, and then enters the standby state.

In this case, the sensor operates at a specific time interval for detecting the approach of the club head, and automatically shuts off the power if there is no club access for a predetermined time.

The parallel and oblique sensor arrays 704, 705, 706, and 707 have a plurality of light receiving units and light emitting units. The plurality of light emitting portions in each sensor array all generate infrared rays externally at the same frequency. The reason why the infrared light is emitted at a specific frequency is to distinguish it from the DC infrared component and the high frequency infrared noise component present in nature.

6 is a circuit diagram of an infrared light receiving sensor for finding the direction of movement of the club head.

IR Rx Array_0 / 1/2/3 represent a plurality of light receiving infrared sensors in sensor arrays 704,705,706,707. The analog outputs of a plurality (N) light receiving sensors in one sensor array are input to one adder amplifier.

The output of the addition amplification circuit is converted into a digital signal through a band pass filter that selects the emission frequency band through an analog selection switch circuit, and then through an amplification and comparison circuit, which is finally input to the MCU.

Each of the proximity sensors 702 and 703 is composed of one light emitting unit and one light receiving unit, and the light emitting unit also emits a specific frequency to send upward, and the light receiving unit has a circuit for finding and amplifying the frequency of the specific band. The two proximity sensors operate simultaneously when the club head passes the parallel sensor 704.

An analysis method using the portable golf swing analyzer according to the present invention is described with reference to FIG. 7 as follows.

First, the golfer is a power supply step of supplying power by turning on the switch installed in the device; Clip type input step through the input button to the type of the clip according to the swing of the golfer; When the golfer places the golf ball on the rubber tee, and puts his clip head on the infrared sensor unit in front of the rubber tee (ADDRESS operation), the LCD window reads ready to notify the golfer by text, picture or sound that it is ready. ; A swing step in which the golfer swings;

Club speed for the golfer's swing, tempo (time to aim the ball by placing the club on a rubber tee, then hit the club backwards to get the club back in front of the rubber tee), club head progression, club head and ball collision A measurement / analysis step of measuring an angle and analyzing a flying distance and an expected path of the ball; And a result display step of displaying the analysis result on the golfer through the display means.

In addition, the power supply step; In any of the subsequent steps, the power saving step when the golfer does not take action for a certain period of time.

When the golfer hits the ball using the above-described swing analysis device, the golfer can know the distance of the ball, the path of the ball, the swing tempo from the address of aiming the ball to the club to hit the ball and hitting the ball. Not only that, but the indoor golf practice range or the short distance outdoor golf practice range reveals the final path of the unknown ball, and its cause can be found numerically.

In particular, when using an array of infrared sensors (array) one at a time to sequentially operate in accordance with the direction of club movement to minimize the consumption of current. In addition, compared to the conventional swing analyzer using a two-array simple array arrangement to measure the heading direction of the club head, the swing analyzer measures golf by arranging an array of sensors to be tilted at a specific angle on the floor. The velocity vector can be calculated from the planar coordinate system of the club head.

Therefore, it has the advantage of finding the correct club head direction regardless of sensor spacing.

In addition, the golfer using the mobile integrated swing analyzer of the present invention is able to practice swing anywhere in the indoor / outdoor practice space, and displays the flight path and distance of an unknown ball in a short outdoor exercise range and causes the collision. Knowing all the elements of the club's head at the point of view will help you assess your club's fitness and correct your swing posture.

In addition, when the integrated swing analysis device of the present invention is used, it is easy to use since there is no need to attach external halogen lights or computers.

Claims (9)

Power supply means for supplying power to the device, input button means for the golfer to select the type of club input, infrared sensor means for detecting the movement of the golf club head, input through the signal and input button received from the infrared sensor unit Control means for processing the expected flight path and flight distance data of the golf ball using the information, and display means for informing the golfer of the results of the flight path and the distance, the means are integrally portable and mobile Golf swing analysis device characterized in that it is easy to. The golf swing analysis device according to claim 1, wherein the display means comprises at least one of an LCD, an LED, and a microphone. 2. The infrared sensor array of claim 1, wherein the infrared sensor array includes two proximity sensors positioned at right and left about a center line perpendicular to the swing direction, two parallel sensor arrays perpendicular to the swing direction, and tilted at a specific angle with the parallel sensor. Golf swing analysis device characterized in that consisting of two rows of diagonal sensor array (array). The golf swing analysis apparatus according to claim 3, wherein a specific angle when the oblique sensor array is disposed comprises an angle of 15 ° to 75 °. 4. The sensor of claim 3, wherein the sensors comprise at least one infrared light emitting unit and one infrared light receiving unit, wherein the infrared light emitting unit generates an infrared pulse at a predetermined specific frequency, and the infrared light receiving unit generates a signal of a predetermined frequency band. Golf swing analysis device characterized in that it comprises a circuit that converts the incoming '0' or '1' digital signal 4. The golf swing analysis device according to claim 3, wherein the sensors include an optical sensor for detecting a sensor of infrared wavelength. The golf swing analysis device according to claim 1, wherein the power supply means is composed of a battery. The golf swing analysis device according to claim 1, wherein the power supply means includes a circuit for converting an AC voltage into a DC voltage. The golf swing analysis device according to claim 1, wherein a protrusion is formed between the rubber plate and the display means to protect the LCD, which is the display means, from the golf ball on a plane.