JP2017035178A - Wrist band having timing measuring function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wrist band for supporting a golfer to correct or keep a swing by simply comparing rhythm and tempo of a current shot of a person hitting a ball using sporting goods with the rhythm and tempo when hitting a shot in the past.SOLUTION: An own wrist band includes acceleration fluctuation measuring means, timing measuring means, and timing display means. After the acceleration fluctuation measuring means is activated, the timing measuring means defines timing when first detecting a predetermined prescribed value or more acceleration fluctuation, as reference timing, analyzes the acceleration fluctuation on and after the reference timing, specifies one or more characteristic pieces of timing of the swing, and measures a lapse time of the specified timing from the reference timing. The timing display means has a timing measuring function that is characterized in displaying timing information related to the measured lapse time.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wristband having a function of measuring timing related to a swing rhythm or tempo in a swing or the like in which a golf club is hit and a golf ball is hit.

  For example, in golf, a swing that swings a golf club is generally broken down into address, back swing, top, down swing, impact, follow-through, and finish swing elements. And when it can be executed smoothly without stagnation, it becomes a nice shot. The flying direction of the shot ball is determined by the head moving direction at the moment of impact when the face surface of the head at the tip of the golf club collides with the ball and the direction of the face, and the head moving direction at the moment of impact. When the direction of the face is the target direction, a nice shot with a straight trajectory is obtained. That is, it can be said that each swing element other than the impact is an auxiliary element for achieving an ideal impact.

  Conversely, when a miss shot is made, it is possible to estimate the situation at the time of impact from the trajectory of the launched ball. The main cause of a miss shot (push out) that is launched in the right direction is that the face surface of the head at the time of impact is directed to the right with respect to the target. In addition, the slice or hook in which the trajectory bends to the right or left is a result of the lateral movement of the ball by the movement direction of the head itself at the time of impact moving to the left or right with respect to the launch direction. For example, push-slices that are often found in amateurs are right-handed golfers because the face at the moment of impact is facing right (face open) and the head moving direction is right to left (outside in) with respect to the target. However, the moving direction of the head and the orientation of the face at the moment of impact are the result of the movement of each part of the body that executes each swing element and the club characteristics, and it is not easy to investigate the cause of the miss shot.

  However, the impact of the face surface not facing the target is basically a timing problem. In other words, during the downswing, the face direction of the head in circular motion is rotating from the right to the left (in the case of a right-handed golfer), and the timing of the moment when the face is directed to the target direction and the actual This is because the timing of impact is shifted (for example, rushing or thrusting). That is, when a straight nice shot is made, the timing when the face surface in the rotation of the face faces the target direction coincides with the timing of the impact, and the timing of each swing element at that time is almost constant. doing.

  Therefore, the swing rhythm without the stagnation (for example, the 3-beat of 1-2-3 and the 2-beat of 1-2) related to the transition timing of each swing element and the swing tempo related to the speed of the swing itself are nice. This is extremely important in realizing the timing of shots. The swing rhythm and tempo with a high probability of hitting a nice shot differ depending on the golfer's physique, physical strength, clubs to be used, swing size, etc. It is necessary to know.

  As a tool for allowing golfers to learn the rhythm and tempo of this golf swing, there is a device that reads the fluctuation of acceleration during a golf swing with an acceleration sensor and indicates the timing during the swing (for example, Patent Document 1). This device informs the timely turnback from backswing to downswing in a golf swing, especially when the trunk is twisted and the upper limb forms the top, and the difference between the upper and lower limbs. The effective timing for starting the downswing from the lower limbs to generate power based on (also known as “tame”) is notified to the golfer wearing this device by vibration or sound.

  However, in the case of the device described in Patent Document 1, the timing for notifying the golfer notifies the timing at which the lower limb should start based on data obtained by analyzing professional-level swing data. Although it is good for professionals and advanced players who are pursuing, amateur golfers far from the ideal swing are not suitable for applications such as swing check for upcoming golf competitions.

JP 2014-131521 A

  Therefore, an object of the present invention is to enable an amateur golfer to easily compare a rhythm and a tempo when the golfer himself has shot a nice shot in the past with a realistic shot for the golfer. The object is to provide a wristband that can support the correction or maintenance of a swing.

  In order to solve the above problems, the present invention provides a wristband that is mounted on an arm of a person who hits a ball with a predetermined sports equipment and measures a predetermined timing of a swing that is a series of operations of hitting the ball with the sports equipment. An acceleration fluctuation measuring means for measuring a series of acceleration fluctuations applied to the wrist band when the swing is executed, and an acceleration fluctuation corresponding to a predetermined start action when starting the swing Start operation registration means for pre-registering as data, timing measurement means for analyzing the measured series of acceleration fluctuations and measuring a predetermined timing, timing display means for displaying information relating to the measured timing, And the timing measuring means is adapted to apply the registered start motion data from the measured series of acceleration fluctuations. A time zone to be detected, analysis of acceleration fluctuations after the detected time zone to identify one or more characteristic timings of the swing, and progress from the time zone corresponding to the start operation of the specified timing Time is measured and the timing display means displays timing information related to the measured elapsed time.

  According to the present invention, it is possible to easily compare the rhythm and tempo of the golfer's own shot with the past nice shot or miss shot, so that the golfer can realistically correct the swing or investigate the cause of the mistake. Can support.

  In addition, since the wristband is not attached to the club but attached to the golfer's arm, data can be collected in an actual round using various clubs.

The internal block block diagram of the wristband 1 which concerns on embodiment of this invention Swing elements in golf swing Examples of actual measured acceleration fluctuations Operation flowchart of wristband 1 according to the embodiment of the present invention

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings, taking a golf swing as an example.

  FIG. 1 is an example of an internal block configuration of a wristband 1 according to an embodiment of the present invention. The wristband 1 is a wristband to be worn on a golfer's arm having a golf club, and includes a data processing / control unit 10, a timer 11, an acceleration sensor 12, a start operation registration unit 13, a swing data storage unit 14, and an operation unit. 15, a display unit 16, and a short-range wireless communication unit 17.

  The data processing / control unit 10 is a unit that performs data processing and arithmetic processing for analyzing fluctuations in acceleration data input from the acceleration sensor 12 and controls each unit constituting the wristband 1.

  The timer 11 is activated / stopped by an instruction from the data processing / control unit 10 and notifies the data processing / control unit 10 of the elapsed time after activation. The wristband 1 and a general wristwatch may be combined, and the timer function of the wristwatch may be used as the timer 11.

  The acceleration sensor 12 is a sensor that measures the acceleration applied to the wristband 1, is activated / stopped by an instruction from the data processing / control unit 10, and the measured time-series acceleration data is a data processing / control unit. 10 is output. The acceleration data may be vector data having directionality, or scalar data obtained by performing arithmetic processing on three-dimensional vector data of acceleration including each direction component of the orthogonal X axis, Y axis, and Z axis. Also good.

  When starting a golf swing, the start operation registration unit 13 registers data related to time-series acceleration fluctuations corresponding to a start operation for smooth start (forward press, waggle, etc.) as start operation data. It is a means to put. The starting operation data to be registered is registered in association with a golfer or a golf club. Here, the reason for registering in association with the golf club is that the weight and balance differ depending on the type of golf club, so even if the same golfer performs the same forward press as the start operation, the acceleration fluctuation due to the difference in inertia This is because they may be different. Note that the start motion data to be registered may be the acceleration variation measured by actually mounting the wristband and actually executing the start operation such as forward press or waggle.

  The swing data storage unit 14 is a means for storing and accumulating, as swing data, acceleration fluctuation at the time of actual shot or timing information of each swing element measured by processing the acceleration fluctuation. Each swing data is also stored in association with a shot result related to whether or not the shot is a nice shot based on data from the operation unit 15.

  The operation unit 15 is means for inputting predetermined operation data to the wristband 1 and inputs information related to golfer selection, measurement start / stop, swing comparison start / stop, shot result input, and the like. To do. The operation data input method may be a general key input method or a voice command input method that recognizes a command sound by analyzing a sound input from a microphone (not shown). Further, a predetermined specific action (for example, swinging the arm several times) is registered in association with the operation command, and the specific operation is detected by the acceleration sensor 12 and the operation command is input. Also good.

  The display unit 16 includes at least one of an LED, an LCD, a speaker, and a vibrator, and is means for transmitting timing information related to the swing rhythm and tempo to the golfer by visual, auditory, or vibration. When the wristband 1 is used as a general wristwatch, the display unit 16 may divert the display function of the wristwatch.

  The short-range wireless communication unit 17 performs short-range wireless communication (for example, Bluetooth (registered trademark)) to exchange data with an external device (for example, a smart phone) that exists in the vicinity of the wristband 1. It is a means to execute. Note that the connection between the wristband 1 and the external device may be a wired connection. Note that some or all of the data processing executed in the wristband 1 may be executed by an external device connected via short-range wireless communication.

  Next, a movement pattern of an arm and a variation pattern of acceleration applied to the arm in a general golf swing will be described. FIG. 2 is an explanatory view schematically showing the movement of the arm wearing the wristband and the movement of the club head 2 in a golf swing, disassembled into general swing elements.

  The state A is an address as a swing element, and is a state in which a stance (foot position) and grip for a shot are determined. The state where the address is determined is almost stationary and the acceleration fluctuation is small. If the stance or grip is wrong, the probability of a nice shot is extremely reduced. However, the present invention does not know whether the stance or grip is good or bad.

  The state B is a state of a start operation (also referred to as a pre-shot routine) that is generally performed in order to smoothly shift from a static state to a moving (starting) state. As the start operation, for example, there is a forward press. Generally, the grip or the head is slightly moved once in the target direction, and the back-swing is shifted as it is while returning the moved grip or the head. As a result, a smooth transition can be made from the static address (state A) to the dynamic backswing (state C), and the subsequent timing is stabilized. For example, in the forward press state, the wrist slightly moves back and forth and right and left, so that the acceleration fluctuates slightly. In addition to this forward press, this type of start operation includes a waggle that repeatedly shakes the club head 2 repeatedly, a milking that weakens the gripping force multiple times, and an operation that traces the head trajectory halfway through the backswing. Etc. Although these start operations are various for each golfer, the start operations performed by one golfer are substantially constant. In this embodiment, the start timing of the start operation or the end timing of the start operation (the start timing of the backswing in the state C) is used as the starting point for measuring the elapsed time at each timing during the swing.

  State C is a state of back swing (also referred to as take back) in which the body is twisted while the club head 2 is raised to store energy, and is an operation that reaches the top (state D). In this backswing state, the wrist slowly accelerates from the start operation (state B) and decelerates at the top (state D).

  The state D is a top state that occurs when switching from backswing to downswing (state E). The top period is actually a period (also referred to as “between”) in which the movement of the upper body for raising the club head 2 in the back swing and the movement for lowering the club head 2 in the down swing are balanced. Is almost stopped, the acceleration fluctuation is small.

  The state E is a down swing state where the club head 2 is rapidly lowered from the top where energy is accumulated (state D) while accelerating, and is an acceleration operation toward the impact (state F). As for the acceleration at this time, a relatively large acceleration fluctuation is generated in the initial stage of the downswing, in which the gravity drop of the wrist and the club head 2, the intentional force from the arm and the centrifugal force are combined.

  State F is an impact state that is the moment when the golf ball and the club head 2 collide. At the moment of impact, a part of the kinetic energy of the club head 2 is transmitted to the golf ball and becomes the kinetic energy of the golf ball to be launched. At this time, the club head 2 rapidly decelerates by the amount of kinetic energy transmitted to the golf ball, and a part of the acceleration fluctuation is transmitted to the wrist, so the wristband 1 measures a very large acceleration fluctuation. Will be.

  The acceleration fluctuation before and after the impact correlates with a meet rate (ball initial speed / head speed) which is a degree (efficiency) of energy transmission between the club head 2 and the ball (not shown). Therefore, if the acceleration fluctuation before and after impact is analyzed and processed, a parameter corresponding to the meet rate can be calculated.

  The state G is a follow-through state in the process in which the club head 2 after impact moves to the finish (state H), and in many cases, the acceleration fluctuation is substantially the same as the downswing (state E).

  The state H is a finish state where the swing is finished. Generally, when a well-balanced swing can be executed, the wrist and the club head 2 are kept stationary for several seconds in the finish state.

  FIG. 3 is an example of acceleration fluctuation measured by the acceleration sensor 12 of the wristband 1 attached to the wrist when actually swinging. The acceleration on the vertical axis represents the three-dimensional vector data measured by the acceleration sensor 12. Is a scalar data obtained by synthesizing the accelerations of the respective directional components of the X axis, the Y axis, and the Z axis.

  FIG. 4 is an operation flowchart of the wristband 1. Hereinafter, this flow will be described with reference to FIGS.

  This flow starts from a state in which a golfer holding a golf club wears the wristband 1 on his arm and can actually hit a golf ball at a practice field or a golf course in a round (S400).

  First, shot measurement will be described. After the start, the data processing / control unit 10 displays information prompting the user to input the shot condition on the display unit 16, and the golfer wearing the wristband 1 operates the operation unit 15 to input the designated shot condition ( S401). Here, the shot conditions are a golfer's name, club type, situation (ball lie, golf course name), and the like. Note that the golfer's name specified in S401 is the golfer registered in the start operation registration unit 13. In the case of a new golfer, the shot condition (golfer name, club, etc.) is registered as a new golfer in S401, S410 and S420 are advanced to NO, and start operation data is newly registered by a thread of YES in S440. (See below).

  After S401, the data processing / control unit 10 circulates through S410, S420, and S440, and waits for a selection operation of any one of shot measurement (S410), swing comparison (S420), and start operation data registration (S440). Yes.

  When shot measurement is selected in S410 (S410, YES), the data processing / control unit 10 starts motion data that is an acceleration variation corresponding to the golfer's start motion (state B in FIG. 2) designated in S401. Are read from the start operation registration unit 13 and set in a predetermined work memory (not shown) (S411). Then, the preparation OK is displayed to prompt the person wearing the wristband 1 to execute the shot, and the timer 11 and the acceleration sensor 12 are activated to start measuring the acceleration fluctuation (S412). Waiting for detection of a start operation when a golf ball is shot (S413).

  In S413, the data processing / control unit 10 monitors the variation of the acceleration data input from the acceleration sensor 12, and compares the acceleration variation pattern corresponding to the golfer's start operation read in S411 to detect the start operation. (S413, YES), starting from the timing at which the start operation is detected, a time stamp is added to the subsequent series of acceleration data and stored in the swing data storage unit 14 (S414), and the process proceeds to S415.

  Here, the start operation is detected after the acceleration sensor 12 is activated, and the timing at which acceleration fluctuations at or above a predetermined value (a level at which transition from state A to state B in FIG. The starting point (reference timing) for elapsed time measurement. The time stamp is used to measure the elapsed time (rhythm, tempo) for transitioning the state of each swing element, and originally, at a regular timing (for example, 1 ms cycle) when the acceleration sensor 12 measures acceleration. Synchronized.

  In S415, the data processing / control unit 10 analyzes the variation pattern of the acceleration data input from the acceleration sensor 12, and monitors the finish (state H in FIG. 2). If the finish is not detected (S415, NO), the process returns to S414, and measurement of acceleration fluctuation with a time stamp is continued. Note that the finish may be detected by detecting, for example, a portion (state H in FIG. 3) where the variation in acceleration data is equal to or less than a predetermined value after the impact (state F in FIG. 3) where the variation in acceleration data is maximum.

  When the fluctuation pattern of the acceleration data corresponding to the finish is detected (S415, YES), the data processing / control unit 10 ends the measurement of the acceleration fluctuation, and each timing and meet of the executed swing based on the measured acceleration fluctuation. The efficiency is calculated, the calculated timing information and meet efficiency information are displayed on the display unit 16 (S416), and the process proceeds to S417.

  Here, each timing of the swing is a timing of transition from the state B to the state H in FIG. 2. For example, after specifying the impact (state F) in which the maximum acceleration fluctuation occurs first, the swing has already been specified. A time zone in which acceleration fluctuation is relatively small between the start operation (state B) and the impact is estimated as the top (state D), and a time zone that converges to a stationary state after the impact (state F) is defined as finish (state H). Estimated time zones before and after the estimated top (state D) and transition to the finish (state H) are estimated as backswing (state C), downswing (state E), and follow-through (state G). That's fine.

  The meet efficiency is a term defined in the present embodiment, and is the degree (efficiency) of acceleration fluctuation before and after impact. That is, the acceleration fluctuation before and after the impact correlates with the energy transmission efficiency when a part of the kinetic energy of the club head 2 is transmitted as the initial velocity kinetic energy of the hit ball. When the core of the club head 2 and the core of the ball collide (also referred to as eating the core), the kinetic energy transmitted to the ball is maximized, and the deceleration of the club head during impact is maximized. The fluctuation range of acceleration fluctuation when eating is maximized. In other words, by calculating the meet efficiency, it is possible to determine whether or not the impact with the core has been executed, and the result of the executed swing is evaluated using the same parameters as the general meet rate (ball initial speed / head speed). can do.

  In S417, when an operation for storing swing data is performed (S417, YES), the timing information, meet efficiency, and shot result of the executed swing are associated with the golfer, date and time, club, situation, and shot result as swing data. (S418) and return to S410. If NO in S417, the process skips S418 and returns to S410.

  Note that the shot result associated and stored in S418 is input by the person who actually shot the shot by operating the operation unit 15 in consideration of the shot response. For example, if only the best shot for each club is stored, it can be used as model data for the person himself / herself.

  Next, swing comparison will be described. When an operation for selecting a swing comparison is made in S420 (S420, YES), a list of swing data stored in the swing data storage unit 14 is displayed on the display unit 16, and a plurality of swing data to be compared is displayed. Is selected by the operator (operation unit 15), and the selected swing data is set (S421). The plurality of swing data is, for example, the latest swing data stored in S418 and the swing data in the best shot of the person himself as a model.

  Then, a comparison display is made so that the timing differences of the set plurality of swing data can be understood (S422). If NO in S430, the process returns to S401.

  This comparison information may be displayed on an external device (for example, a smart phone) connected via the short-range wireless communication unit 17. Moreover, the display content may display in parallel the timings of all swing elements from the start operation (state B) to the finish (state H) shown in FIG. 2, or the start operation (state B) which is the main timing. The timing of impact from the top (state C) and from the top may be displayed. Moreover, when comparing with the best shot, the time lag of the timing of each swing element of the latest shot from the best shot may be displayed as a numerical value. In any case, the golfer wearing this wristband 1 can grasp the difference between his current shot and the past best shot as a timing difference, so that correction of rushing or swing delay etc. is efficient. Can be supported.

  Next, the rhythm / tempo induction function will be described. This rhythm / tempo induction function is a function for notifying the rhythm and tempo at which each swing element should be executed in a metronome-like manner with sound or light. However, unlike a general metronome, the timing interval for notification by sound or light is not constant.

  In the present embodiment, in the state in which the timings of a plurality of swing data are compared and displayed in S422, selection of swing data (for example, past best shot) as a model from the operation unit 15 and rhythm / tempo induction function When a start of the movement is instructed (S430, YES), a series of timings of starting swing, top, impact and finish as a model are set, and a series of ringing, blinking or vibration indicating the arrival of each set timing Is executed (S431). If this guidance function stop operation is not performed (S432, NO), S431 is repeated, and if this guidance function stop operation is performed (S432, YES), this rhythm / tempo guidance function is stopped (S433), Return to S401.

  In S431, the start operation of the forward press or the like that is the starting point of the swing is emphasized (for example, emphasized by the volume, tone color, blinking color, etc.), and a series of timings from the start operation to the finish are continuously shaken. If repeated at regular intervals, the golfer wearing the wristband 1 can easily synchronize the swing start operation to be performed from now on with the swing start operation as a model of the swing. It is also effective to emphasize the impact timing, which is the most important timing. Since the timing after the start operation is the timing for each swing element of the swing to be used as a model, it is easy to imitate the swing to be used as a model.

  Next, registration of start operation data will be described. In S440, when the start operation data registration operation is performed (S440, YES), the contents instructing the execution from the start operation to the top are displayed on the display unit 16, and the acceleration sensor 12 and the timer 11 are activated and the time is reached. Measurement starts with a stamp (S441). Here, the reason for instructing the execution limited to the middle of the backswing is to surely catch the start operation such as the forward press, but the execution may be performed as it is.

  When the top stillness is detected (S442, YES), the measurement is stopped, the initial fluctuation portion of the measured acceleration fluctuation is specified as the start action, and the specified start action and the progress of the measured acceleration fluctuation are displayed ( When the registration OK operation is performed (S443), the measured acceleration variation of the starting motion portion is registered as start motion data in association with the designated golfer and club (S445), and the process proceeds to S401. Return. When the registration NG operation is performed or the registration interruption operation is performed (S444, NO), S445 is skipped and the process returns to S401.

  The embodiment of the present invention has been described above. According to the present invention, it is possible to easily compare the rhythm and tempo of the golfer's own shot with the past nice shot or miss shot, so that the golfer can realistically correct the swing or investigate the cause of the mistake. Can support. In addition, since the wristband is not attached to the club but attached to the golfer's arm, data can be collected in an actual round using various clubs.

  In the present embodiment, when the rhythm / tempo at the time of the swing matches the stored tempo / rhythm, the voice may be displayed as “nice shot” to keep the swing rhythm.

  By the way, as an embodiment of the present invention, golf swing has been described as an example. The present invention is not limited to this. In other words, the present invention can also be applied to timing analysis of arm movements in general ball games such as baseball, tennis, table tennis, etc., where a bat or racket held by an arm is shaken to hit a ball.

DESCRIPTION OF SYMBOLS 1 ... Wristband 10 ... Data processing / control part 11 ... Timer 12 ... Acceleration sensor 13 ... Start operation registration part 14 ... Swing data storage part 15 ... Operation part 16- ..Display unit 17: Short-range wireless communication unit.

Claims (3)

A wristband that is mounted on an arm of a person who hits a ball with a predetermined sports equipment and measures a predetermined timing of a swing that is a series of operations of hitting the ball with the sports equipment,
Acceleration fluctuation measuring means for measuring a series of acceleration fluctuations applied to the wrist band when the swing is executed, timing measuring means for analyzing the measured series of acceleration fluctuations and measuring a predetermined timing, and the measurement Timing display means for displaying information related to timing,
The timing measuring means uses the timing at which acceleration fluctuations equal to or greater than a predetermined value after the acceleration fluctuation measuring means is first activated as a reference timing, analyzes the acceleration fluctuations after the reference timing, and analyzes the swing 1 or more characteristic timings are specified, an elapsed time from the reference timing of the specified timing is measured, and the timing display means displays timing information related to the measured elapsed time. Wristband with timing measurement function. The wristband according to claim 1,
A start motion registration means for pre-registering acceleration fluctuation corresponding to a predetermined start motion when starting the swing as start motion data;
The timing measurement means detects a time zone corresponding to the registered start motion data from the measured series of acceleration fluctuations, analyzes acceleration fluctuations after the detected time zone, and characterizes the swing. A wristband having a timing measurement function, wherein one or more timings are specified and an elapsed time from a time zone corresponding to the start operation at the specified timing is measured. The wristband according to claim 1 or 2,
The timing of impact of hitting the ball is specified, the degree of kinetic energy given to the ball is calculated based on the acceleration fluctuation before and after the specified timing of impact, and the calculated kinetic energy given to the ball A wristband having a timing measurement function characterized by displaying information relating to the degree of the above.

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