JP2016116612A - Carry measurement device, hit ball direction measurement device, carry measurement system, carry measurement method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To acquire a more accurate hit ball carry or a more accurate hit ball direction.SOLUTION: A carry measurement device includes: a first acquisition part for acquiring a sensor signal from a motion sensor mounted on at least one of an exercise device and a user; a second acquisition part for acquiring position information; a shot detection part for detecting a shot on the basis of the sensor signal; a position measurement part for measuring a shot position on the basis of the position information at the time when the shot is detected; and a carry measurement part for measuring a carry of a hit ball by the shot on the basis of a distance between the previous shot position and the current shot position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a flight distance measurement device, a hitting ball direction measurement device, a flight distance measurement system, a flight distance measurement method, and a program.

  Patent Document 1 describes a swing diagnosis device that determines a hitting direction and a hitting distance of a hit ball based on acceleration at the time of impact of a swing (shot) obtained from an acceleration sensor mounted on the back of a human hand.

Japanese Patent Laid-Open No. 10-43349

  However, the above Patent Document 1 estimates the hitting direction and the hitting distance by integrating the acceleration at the time of impact of the swing, and the estimated value often deviates from the actual hitting direction and the hitting distance. . Possible causes include, for example, accumulation of calculation errors due to integration and the influence of weather conditions such as wind on the hit ball.

  Therefore, an object of the present invention is to obtain a more accurate hitting distance or hitting direction.

  One aspect of the present invention that solves the above problem is a flight distance measurement device, which includes a first acquisition unit that acquires a sensor signal from a motion sensor attached to at least one of an exercise equipment and a user, and position information. A second acquisition unit to acquire; a shot detection unit that detects a shot based on the sensor signal; a position measurement unit that measures a shot position based on the position information when the shot is detected; A flight distance measuring unit that measures a flight distance of a hit ball by the shot based on a distance between the shot position and the current shot position; Thereby, the flying distance of the hit ball can be measured easily and accurately without the player's work.

  In the flight distance measuring device, the position measuring unit measures the shot position of the Nth shot as the stop position of the ball hit by the (N-1) th shot when N is an integer equal to or greater than 2. The flight distance measurement unit then stops the ball at the N-2th shot (when N = 2, the shot position at the first shot) and the ball stop at the N-1th shot. The distance to the position may be measured as the flight distance of the (N-1) th shot. Thereby, the stop position and the flight distance of the ball by each shot can be sequentially recorded.

  In the flight distance measuring device, the shot detection unit may detect the shot when an impact on the ball is detected. Thereby, the shot position can be detected more accurately.

  In the flight distance measurement device, the shot detection unit detects the end of a hole based on the sensor signal or based on a predetermined operation input, and the position measurement unit detects the end of the hole. The position information at the time is measured as the stop position of the ball of the last shot in the hole, and the flight distance measurement unit, the stop position of the ball of the previous shot in the hole, and the last position of the ball The flight distance of the last shot may be measured based on the stop position of the ball of the last shot. Thereby, since the stop position of the ball of the last shot of a hole can be determined, the stop position and flight distance of the ball of all shots of each hole can be measured.

  In the flight distance measuring device, the position measuring unit may measure a distance from a stop position of the ball of each shot to a predetermined target position. In this way, the accurate remaining distance from the stop position of the ball to the target position can be easily presented as information useful for improving the player.

  In the flight distance measurement device, the position measurement unit measures an altitude together with the shot position, and the flight distance measurement unit measures the flight distance of the shot based on the shot position and the altitude. Good. In this way, even when the golf course is inclined, for example, a more accurate flight distance can be calculated.

  In the flight distance measurement device, the second acquisition unit may acquire the position information from a GPS receiver carried by the user. Thereby, if the GPS receiver is attached to the user, the position information can be easily obtained.

  Another aspect of the present invention that solves the above problem is a ball striking direction measurement device, a first acquisition unit that acquires a first sensor signal from a motion sensor attached to at least one of an exercise instrument and a user, A second acquisition unit that acquires position information; a shot detection unit that detects a shot based on the sensor signal; and a position measurement unit that measures a shot position based on the position information when the shot is detected; And a hitting direction measuring unit for measuring the hitting direction of the shot based on the previous shot position and the current shot position. Thereby, the hitting direction can be obtained easily and accurately.

  In the ball striking direction measurement device, the second acquisition unit acquires a second sensor signal from an azimuth sensor attached to at least one of the exercise equipment and the user, and the ball striking direction measurement unit receives the second sensor signal. The target direction of the shot may be measured based on the difference, and the difference between the target direction and the hit ball direction may be calculated. Thereby, the hitting direction with respect to the target direction can be presented as information useful for improving the player.

  Still another aspect of the present invention for solving the above-described problem is a flight distance measurement system, in which a motion sensor attached to at least one of an exercise equipment and a user, a GPS receiver, and a sensor signal from the motion sensor A first acquisition unit that acquires position information, a second acquisition unit that acquires position information from the GPS reception unit, a shot detection unit that detects a shot based on the sensor signal, and the position when the shot is detected A position measurement unit that measures a shot position based on information, and a flight distance measurement unit that measures a flight distance of a hit ball by the shot based on a distance between the previous shot position and the current shot position; Have Thereby, the flying distance of the hit ball can be measured easily and accurately without the player's work.

  Still another aspect of the present invention that solves the above problem is a flight distance measurement method, a first acquisition step of acquiring a sensor signal from a motion sensor attached to at least one of an exercise equipment and a user, and a position A second acquisition step of acquiring information; a shot detection step of detecting a shot based on the sensor signal; a position measurement step of measuring a shot position based on the position information when the shot is detected; A flight distance measuring step of measuring a flight distance of the hit ball by the shot based on a distance between the previous shot position and the current shot position. Thereby, the flying distance of the hit ball can be measured easily and accurately without the player's work.

  Still another aspect of the present invention that solves the above-described problem is a program, a first acquisition step of acquiring a sensor signal from a motion sensor attached to at least one of the exercise equipment and the user, and acquisition of position information A second acquisition step, a shot detection step of detecting a shot based on the sensor signal, a position measurement step of measuring a shot position based on the position information when the shot is detected, and the previous Based on the distance between the shot position and the current shot position, the computer is caused to execute a flight distance measurement step of measuring the flight distance of the hit ball by the shot. Thereby, the flying distance of the hit ball can be measured easily and accurately without the player's work.

It is a figure which shows an example of the external appearance of the flight distance measuring system which concerns on 1st embodiment of this invention. It is a block diagram which shows an example of a structure of a flight distance measurement system. It is a figure which shows an example of the data structure of shot information. It is a flowchart which shows an example of a shot information generation process. It is a figure which shows an example of the screen which displays shot information. It is a block diagram which shows an example of a structure of the flight distance measurement system which concerns on 2nd embodiment of this invention. It is a figure which shows an example of the data structure of shot information. It is a figure explaining an example of how to obtain a target direction. It is a flowchart which shows an example of a shot information generation process. It is a figure which shows an example of the screen which displays shot information.

  Hereinafter, each embodiment of the present invention will be described with reference to the drawings. In each embodiment, golf will be described as an example. In golf, a golf club is mentioned as an exercise equipment.

<First embodiment>
FIG. 1 is a diagram showing an example of the appearance of a flight distance measurement system according to the first embodiment of the present invention.

  The flight distance measurement system 1 includes a flight distance measurement device 2 and a sensor device 3. The flight distance measuring device 2 and the sensor device 3 are connected by wire or wireless so that they can communicate with each other. In the example of FIG. 1, the flight distance measuring device 2 is attached to the waist of the user P, and the sensor device 3 is attached to the club C. Of course, the mounting position of the flight distance measuring device 2 is not particularly limited, and may be, for example, the back, leg, or club C of the user P. Further, the mounting position of the sensor device 3 is not particularly limited, and may be, for example, the back of the hand of the user P, the wrist, or the like.

  The flight distance measuring device 2 detects a swing during a shot using the club C by the user P based on a signal output from the sensor device 3. In the present embodiment, a shot means an action of hitting (striking) a ball by a swing motion (may be called a stroke). The hit ball means a ball that has been shot (shot) by a shot, the shot position means a place where the ball is hit, and the ball stop position (or simply stop position) is the position where the hit ball stops. (The stop position of the ball after the shot). In this embodiment, the club C includes a driver, an iron, a putter, and the like, and the shot includes a putting by a putter and the like in addition to a shot by the driver and the like.

  Further, the flight distance measuring device 2 measures the ball stop position or measures the flight distance of the hit ball based on a signal output from a GPS (Global Positioning System) receiving unit 11 described later. The flight distance measuring device 2 can be realized by a portable terminal such as a smartphone or a tablet, for example.

  The sensor device 3 includes a plurality of motion sensors that detect the movement of the measurement object and output a signal. In the present embodiment, the plurality of motion sensors are an angular velocity sensor (also referred to as a gyro sensor) and an acceleration sensor. The angular velocity sensor detects an angular velocity around the detection axis and outputs an output signal corresponding to the detected angular velocity. In the present embodiment, the angular velocity sensor detects angular velocities around three axes (x axis, y axis, z axis). The acceleration sensor detects acceleration in the detection axis direction, and outputs an output signal corresponding to the detected acceleration magnitude. In the present embodiment, the acceleration sensor detects accelerations in the directions of three axes (x axis, y axis, z axis).

  FIG. 2 is a block diagram illustrating an example of the configuration of the flight distance measurement system.

  The flight distance measuring device 2 includes a control unit 10, a GPS receiving unit 11, a first communication unit 12, a second communication unit 13, a storage unit 14, an operation unit 15, and a display unit 16. .

  The GPS receiving unit 11 receives a signal from a GPS satellite, calculates current position information (for example, latitude and longitude) based on the received signal, and outputs it. For example, the GPS receiving unit 11 periodically receives a signal and outputs current position information. The GPS receiving unit 11 can be realized by, for example, a GPS receiver.

  The first communication unit 12 is connected to a network such as a mobile phone line or the Internet, and transmits and receives information. The first communication unit 12 can be realized by a network interface device, for example.

  The second communication unit 13 is connected to the sensor device 3 and receives sensor signals and transmits / receives control signals. The second communication unit 13 can be realized by a network interface device, for example.

  The storage unit 14 stores data used by the control unit 10 for processing. The storage unit 14 can be realized by a non-volatile storage device such as a flash ROM (Read Only Memory), for example.

  In the present embodiment, the storage unit 14 stores information related to user shots. FIG. 3 is a diagram illustrating an example of a data structure of shot information. The shot information includes a hole number 141 that identifies holes constituting the golf course, a shot number 142 that indicates the number and order of shots in the hole, and a stop that indicates the position on the map where the ball that was shot by the shot has stopped. It includes a record in which the position 143 is associated with the flight distance 144 of the ball that has been shot by the shot. Here, the map is a map of a golf course, and includes a map of each hole constituting the golf course. In addition, the map includes, for each hole, the type of area that constitutes the hole (for example, tea ground, fairway, rough, bunker, green, cup, etc.), the coordinate range of each area, and the like.

  Returning to the description of FIG. 2, the operation unit 15 receives a user operation input, and outputs an operation signal corresponding to the operation to the control unit 10. The operation unit 15 can be realized by an input device such as a key, a touch sensor, or a touch panel, for example.

  The display unit 16 displays a screen. The display unit 16 can be realized by, for example, an LCD (Liquid Crystal Display), an organic EL (Electro-Luminescence) display, or the like.

  The control unit 10 controls the flight distance measuring device 2 in an integrated manner. The control unit 10 includes a sensor information acquisition unit (corresponding to a first acquisition unit of the present invention) 101, a position information acquisition unit (corresponding to a second acquisition unit of the present invention) 102, and a map information acquisition unit (present invention). ) 103, a shot detection unit 104, a stop position measurement unit (corresponding to a position measurement unit of the present invention) 105, a flight distance measurement unit 106, and an output unit 107.

  For example, the control unit 10 connects a CPU (Central Processing Unit) that is an arithmetic device, a RAM (Random Access Memory) that is a volatile storage device, a ROM that is a nonvolatile storage device, and the control unit 10 and other units. It can be realized by a computer provided with an interface (I / F) circuit to be connected, a bus for connecting these to each other, and the like. The computer may include various dedicated processing circuits such as an image processing circuit. The control unit 10 may be realized by an ASIC (Application Specific Integrated Circuit) or the like.

  At least one of the functions (sensor information acquisition unit 101, position information acquisition unit 102, map information acquisition unit 103, shot detection unit 104, stop position measurement unit 105, flight distance measurement unit 106, output unit 107) of the control unit 10 described above. The unit can be realized, for example, when the CPU reads a predetermined program stored in the ROM into the RAM and executes it. The predetermined program is, for example, an application program that runs on an OS (Operating System), which is read from a portable storage medium and installed in the flight distance measuring device 2, or downloaded from a server on the network and measured in flight distance. It can be installed on the device 2. Of course, at least a part of the functions of the control unit 10 may be realized by, for example, a dedicated processing circuit. Further, at least a part of the functions of the control unit 10 may be realized by both the CPU and the dedicated processing circuit, for example.

  The sensor information acquisition unit 101 acquires a sensor signal from the sensor device 3 via the second communication unit 13. The sensor information acquisition unit 101 acquires sensor signals at a predetermined sampling period, for example. As described above, in this embodiment, the sensor signal is a signal corresponding to the magnitude of the angular velocity around the three axes (x axis, y axis, z axis) and three axes (x axis, y axis, z). Signal corresponding to the magnitude of acceleration in the (axis) direction. The acquired sensor signal is stored in, for example, a storage device such as a RAM or the storage unit 14.

  The position information acquisition unit 102 acquires current position information from the GPS reception unit 11. The acquired position information is stored in a storage device such as the RAM or the storage unit 14, for example.

  The map information acquisition unit 103 acquires the map information of the golf course via the first communication unit 12 from a server on the network. The acquired map information is stored in a storage device such as the RAM or the storage unit 14.

  The shot detection unit 104 detects a shot based on the acquired sensor signal. In the present embodiment, the shot detection unit 104 detects a swing at the time of a shot, detects an impact timing at which the club head hits the ball in the swing operation, and detects this timing as a shot timing. The shot detection procedure is not particularly limited. For example, the following procedure can be adopted.

  First, the shot detection unit 104, for example, determines whether the angular velocity around each axis and the acceleration in each axis direction are stable (for example, within a predetermined threshold range) for a predetermined time (for example, 2 seconds). Determine whether or not. When it is determined that the angular velocity and acceleration are stable, the shot detection unit 104 detects the start timing of the swing. Of course, the method for determining whether or not the sensor signal is stable is not limited to the above. For example, the change in angular velocity around each axis and the acceleration in each axis direction changes to a predetermined change pattern (for example, a waggle change pattern). When they match or approximate, the swing start timing may be detected. A part may be used without using the angular velocities around all the axes and the accelerations in all the axial directions. Further, for example, the shot detection unit 104 may receive a swing start instruction from a user or the like via the operation unit 15 and detect it as a swing start timing.

  After the start timing of the swing is detected, for a predetermined time (for example, 3 seconds), the shot detection unit 104 calculates the sum of the magnitudes of angular velocities (referred to as norms) around each axis for each predetermined sampling period. Then, the shot detection unit 104 detects a timing at which the norm of the angular velocity is maximum during a predetermined time as an impact timing. As another method, the shot detection unit 104 differentiates the norm of the angular velocity with respect to time for each predetermined sampling period. The shot detection unit 104 detects the earlier timing as the impact timing among the timing at which the calculated differential value of the norm of the angular velocity is maximum and minimum. Of course, the method for detecting the impact timing is not limited to the above. For example, a part of the method may be used without using the angular velocities around all the axes.

  As described above, the shot detection unit 104 can detect a swing and detect the impact timing during the swing operation as a shot.

  When the shot detection unit 104 detects a shot, the stop position measurement unit 105 acquires current position information stored in the storage device. The latest current position information acquired by the position information acquisition unit 102 is stored in the storage device. Further, the stop position measuring unit 105 uses the acquired current position information as the stop position 143 of the previous shot (previous shot, shot number N-1) of the detected shot (current shot, shot number N). Is set in the shot information 140. The acquired current position information is also the shot position of the detected shot (current shot, shot number N).

  The flight distance measuring unit 106 calculates the distance between the ball stop positions of two consecutive shots as the flight distance of the hit ball. Further, the flight distance measurement unit 106 sets the calculated flight distance as the flight distance 144 of the previous shot (previous shot, shot number N-1) of the detected shot (current shot, shot number N-1). , Set in the shot information 140.

  The output unit 107 generates a screen including the shot information 140 and outputs and displays the screen on the display unit 16. The output unit 107 outputs and displays the generated screen to an external device such as a PC (Personal Computer), a tablet PC, a smartphone, or an HMD (Head Mount Display) via the first communication unit 12 or the like. You may do it.

  Next, an operation example of the above-described flight distance measuring device 2 will be described.

  FIG. 4 is a flowchart illustrating an example of shot information generation processing. This flowchart is started, for example, when a golf course and a hole number are designated by the user.

  The sensor signal is acquired at a predetermined sampling period by the sensor information acquisition unit 101 and stored in the storage device. The current position information is periodically acquired by the position information acquisition unit 102, and the latest information is stored in the storage device. Moreover, the map information of the designated golf course is acquired by the map information acquisition unit 103 and stored in the storage device.

  First, the shot detection unit 104 sets the shot number N to 1 (step S10).

  Then, the shot detection unit 104 determines whether or not there is a shot (step S20). Specifically, as described above, the shot detection unit 104 performs a process of detecting the swing start timing and the impact timing during the swing based on the sensor signal. The shot detection unit 104 determines that there is a shot when the impact timing is detected.

  When it is determined that there is a shot (Y in Step S20), the stop position measurement unit 105 acquires the latest current position information stored in the storage device (Step S30). Further, the flight distance measuring unit 106 calculates the shot flight distance (step S40). Specifically, the flight distance measurement unit 106 calculates the difference between the stop position 143 of the shot number N-2 included in the shot information 140 and the stop position (stop position of the shot number N-1) acquired in step S30. Is calculated to calculate the flight distance of shot number N-1. The flight distance measuring unit 106 executes the process of step S40 when the shot number N is 2 or more.

  Then, information on the shot N-1 is recorded (step S50). Specifically, the shot detection unit 104 adds a record including a designated hole number and a shot number obtained by subtracting 1 from the set shot number N to the shot information 140. Further, the stop position measuring unit 105 sets the current position information acquired in step S30 as the stop position 143 in the added record. Further, the flight distance measurement unit 106 sets the flight distance calculated in step S 40 as the flight distance 144 in the record added to the shot information 140.

  For example, as shown in FIG. 3, when the first shot is made, a record with the shot number “0” is added to the shot information 140, and the stop position at the time of the 0th shot is set (the flight distance is set). Not) Also, when the second shot is made, a record with the shot number “1” is added to the shot information 140, and the stop position and the flight distance of the ball skipped by the first shot are set. As described above, when the Nth shot is performed, the record of the shot number N-1 is added to the shot information 140, and the stop position and the flight distance of the ball skipped by the N-1 shot are set. .

  Returning to the description of FIG. 4, the shot detection unit 104 then adds 1 to the shot number N (step S <b> 60) and executes the process of step S <b> 20 again.

  When it is determined that there is no shot (N in Step S20), the shot detection unit 104 determines whether or not the play of the designated hole has ended (Step S70). Specifically, for example, the shot detection unit 104 receives a hole end instruction from the user via the operation unit 15 and detects the end of the hole. In this case, for example, when the ball is cupped in, the user may input an instruction to end the hole from the operation unit 15 near the cup. Of course, the hole end detection method is not limited. For example, the shot detection unit 104 may detect the end of a hole when detecting a predetermined change in angular velocity and acceleration based on a sensor signal. Good. In this case, for example, when the ball is cupped in, the user may perform a predetermined gesture operation using the club near the cup.

  When it is determined that the play of the hole has not ended (N in Step S70), the shot detection unit 104 executes the process of Step S20 again.

  When it is determined that the play of the hole has ended (Y in step S70), the stop position measuring unit 105 acquires the latest current position information stored in the storage device (step S80). Further, the flight distance measuring unit 106 calculates the shot flight distance (step S90). Specifically, the flight distance measurement unit 106 determines the difference between the stop position 143 of the shot number N-2 included in the shot information 140 and the stop position (stop position of the shot number N-1) acquired in step S80. Is calculated to calculate the flight distance of shot number N-1. The flight distance measuring unit 106 executes the process of step S90 when the shot number N is 2 or more.

  Then, information on the shot N-1 is recorded (step S100). Specifically, the shot detection unit 104 adds a record including a designated hole number and a shot number obtained by subtracting 1 from the set shot number N to the shot information 140. Further, the stop position measuring unit 105 sets the current position information acquired in step S80 as the stop position 143 in the added record. Further, the flight distance measurement unit 106 sets the flight distance calculated in step S90 as the flight distance 144 in the record added to the shot information 140. After step S100 ends, the shot detection unit 104 ends the process shown in this flowchart.

  For example, as shown in FIG. 3, when the end of play of the designated hole is detected after the fourth shot, a record with the shot number “4” is added to the shot information 140 and put by the fourth shot. The stopping position and flying distance of the ball are set.

  The shot information generation process as described above is executed for each designated hole, and the shot information of each hole is accumulated in the storage device.

  The output unit 107 generates a screen 500 as shown in FIG. 5 (an example of a screen for displaying shot information), for example, according to a user operation, and outputs and displays the screen 500 on the display unit 16.

  The screen 500 includes a shot information area 510, a hole image area 520, and the like.

  The output unit 107 displays the hole number, the shot number in the hole indicated by the hole number, and the flight distance of the shot in the shot information area 510. For example, the output unit 107 receives designation of a hole number and a shot number via the operation unit 15, displays the designated hole number and shot number in the shot information area 510, and designates the designated hole number and shot number. The flight distance associated with is acquired from the shot information 140 and displayed in the shot information area 510.

  Further, the output unit 107 displays a map of the hole in the hole image area 520 based on the map information of the hole indicated by the designated hole number. Further, the output unit 107 acquires at least a stop position associated with the designated hole number and shot number from the shot information 140, and displays an image indicating the stop position on the map in association with the map coordinates. . In addition to the stop position associated with the designated shot number, the stop position associated with the shot number one before or two or more before the shot number may be displayed. In the example of FIG. 5, “2” is designated as the shot number, and the stop position A of the ball with the shot number “2” and the stop position B of the ball with the shot number “1” are displayed on the map of the hole. The stop position C of the ball with the shot number “0” is displayed.

  The first embodiment of the present invention has been described above. According to this embodiment, for example, the flight distance measuring device detects a shot by a player, acquires position information when the shot is detected, and measures a flight distance based on the acquired position information. Thereby, the flying distance of the hit ball can be measured easily and accurately without the player's work.

  Further, according to the present embodiment, for example, the flight distance measuring apparatus measures the shot position of the Nth shot as the ball stop position after the (N-1) th shot. Thereby, the stop position of the ball of each shot and its flight distance can be sequentially recorded.

  Further, according to the present embodiment, for example, the flight distance measuring device detects the timing of impact during a swing and acquires position information based on this timing. Thereby, the shot position can be detected more accurately. Further, according to the present embodiment, for example, the flight distance measuring device detects the end of the hole based on the sensor signal or based on a predetermined operation input, and the position information at that time is obtained after the last shot. Measured as the ball stop position. Thereby, since the ball stop position of the last shot of a hole can be determined, the ball stop position and flight distance of all shots of each hole can be measured.

<Second embodiment>
In the second embodiment, in addition to the ball stop position and flight distance of the shot, the shot hit direction is obtained. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and differences from the first embodiment will be mainly described.

  FIG. 6 is a block diagram showing an example of the configuration of a flight distance measurement system according to the second embodiment of the present invention.

  The flight distance measuring device 2 includes a sensor unit 17 in addition to the units shown in the first embodiment. Further, the control unit 10 includes a hitting direction measuring unit 108.

  The sensor unit 17 includes a magnetic sensor (which may be called an orientation sensor) that detects geomagnetism and outputs a signal. The magnetic sensor detects, for example, geomagnetism of two axes (x axis: left and right direction, y axis: front and rear direction) or three axes (x axis: left and right direction, y axis: front and rear direction, z axis: up and down direction). An output signal corresponding to the magnitude of the geomagnetism is output. The sensor unit 17 includes a triaxial acceleration sensor. The magnetic sensor and the acceleration sensor may be provided as separate sensor units.

  The storage unit 14 stores shot information 140 as illustrated in FIG. 7 (a diagram illustrating an example of a data structure of shot information). The shot information 140 includes a hitting direction 145 of a ball that has been shot by a shot in addition to the data items shown in the first embodiment. In this embodiment, the hitting direction 145 is a relative direction with respect to a target direction which is a reference direction (a direction in which the player strikes the ball, for example, a right direction when the player is viewed from the front). For example, the hitting direction 145 can be represented by a left and right rotation angle with respect to the target direction.

  Returning to the description of FIG. 6, the sensor information acquisition unit 101 acquires a sensor signal from the sensor unit 17. The sensor information acquisition unit 101 acquires sensor signals at a predetermined sampling period, for example. As described above, in the present embodiment, the sensor signal includes a signal corresponding to the magnitude of geomagnetism in the biaxial or triaxial direction and a signal corresponding to the magnitude of acceleration in the triaxial direction. The acquired sensor signal is stored in, for example, a storage device such as a RAM or the storage unit 14.

  When a shot is detected, the hitting direction measuring unit 108 calculates the target direction of the shot based on the magnetic sensor signal and the acceleration sensor signal. The target direction of the shot is stored in the storage device. For example, as shown in FIG. 8 (a diagram illustrating an example of how to obtain the target direction), the normal direction of the display unit 16 of the flight distance measuring device 2 is set as the Z axis. Then, the flight distance measuring device 2 is mounted on the player's body so that the Z axis coincides with the direction in which the player launches the ball (for example, mounted on the right waist as shown in FIG. 1). The hitting direction measuring unit 108 obtains the Z-axis direction as the target direction based on the magnetic sensor signal and the acceleration sensor signal. Since the method for obtaining the azimuth using the magnetic sensor and the acceleration sensor may use a general technique, description thereof is omitted. Of course, the Z-axis orientation may be calculated using only a 3-axis magnetic sensor.

  Further, the hitting direction measuring unit 108, when a shot is detected, indicates the direction indicated by a straight line connecting the ball stop positions of two consecutive shots (the direction from the previous stop position to the subsequent stop position), Calculated as the hitting direction. Further, the hitting direction measuring unit 108 calculates a difference between the calculated target direction (azimuth) and hitting direction (direction) of the shot, and calculates the hitting direction (left and right rotation angles with respect to the target direction) of the shot. The hitting direction measuring unit 108 sets the calculated hitting direction in the shot information 140 as the hitting direction 145 of the shot (shot number N-1) immediately before the detected shot (shot number N).

  FIG. 9 is a flowchart illustrating an example of shot information generation processing. Steps S10 to S40, steps S50 to S60, steps S70 to S90, and step S100 are the same as in FIG.

  The sensor signal from the sensor unit 17 is acquired at a predetermined sampling cycle by the sensor information acquisition unit 101 and stored in the storage device.

  After step S40, the hitting direction measuring unit 108 calculates a target direction (step S42). Specifically, the hitting direction measuring unit 108 determines the shot number N of shots based on the sensor signal (sensor signal from the sensor unit 17) at the start timing of the swing detected by the shot detecting unit 104 in step S20. Calculate the target direction. The calculated target direction of the shot number N is stored in the storage device.

  Further, the hitting direction measuring unit 108 calculates the hitting direction (step S44). Specifically, the hitting direction measuring unit 108 connects the stop position 143 of the shot number N-2 included in the shot information 140 and the stop position (stop position of the shot number N-1) acquired in step S30. By determining the direction of the straight line, the hitting direction of the shot number N-1 is calculated. Further, the hitting direction measuring unit 108 obtains a difference between the target direction of the shot number N-1 stored in the storage device by the processing of step S42 and the calculated shot direction of the shot number N-1 to obtain the shot. The hitting direction of number N-1 (left and right rotation angles relative to the target direction) is calculated. The hitting direction measuring unit 108 executes the process of step S44 when the shot number N is 2 or more.

  In step S50, the hitting direction measuring unit 108 hits the hit direction (left and right rotation angles with respect to the target direction) calculated in step S44 in the record added to the shot information 140 (record of shot number N-1). Set as direction 145.

  After step S90, the hitting direction measuring unit 108 calculates the hitting direction (step S92). Specifically, the hitting direction measuring unit 108 connects the stop position 143 of the shot number N-2 included in the shot information 140 and the stop position (stop position of the shot number N-1) acquired in step S80. By determining the direction of the straight line, the shot direction of shot number N-1 is calculated. Further, the hitting direction measuring unit 108 obtains a difference between the target direction of the shot number N-1 stored in the storage device by the processing of step S42 and the calculated shot direction of the shot number N-1 to obtain the shot. The hitting direction of number N-1 (left and right rotation angles relative to the target direction) is calculated. The hitting direction measuring unit 108 executes the process of step S92 when the shot number N is 2 or more.

  In step S100, the hitting direction measuring unit 108 hits the hit direction (left and right rotation angles with respect to the target direction) calculated in step S92 in the record added to the shot information 140 (record of shot number N-1). Set as direction 145.

  The output unit 107 generates a screen 500 as shown in FIG. 10 (an example of a screen for displaying shot information) according to a user operation, and outputs and displays the screen 500 on the display unit 16.

  Unlike FIG. 5, in the shot information area 510, in addition to the hole number, the shot number in the hole indicated by the hole number, and the flight distance of the shot, the hitting direction of the shot is displayed. For example, the output unit 107 acquires the flight distance and the hitting direction associated with the designated hole number and shot number from the shot information 140 and displays them in the shot information area 510. In the example of FIG. 10, the hit direction of the shot number “2” is displayed as “12 ° right”.

  Further, the output unit 107 associates at least the stop position associated with the designated shot number and the shot number one before the shot number on the hole map displayed in the hole image area 520. Displays the stop position. Further, the output unit 107 displays an image indicating the hitting direction connecting the stop position of the designated shot number and the stop position of the previous shot number. The output unit 107 displays an image indicating the target direction of the shot number with the shot position of the designated shot number as a base point. In the example of FIG. 10, “2” is designated as the shot number, and the stop position A of the ball with the shot number “2” and the stop position B of the ball with the shot number “1” are displayed on the map of the hole. A hitting ball direction image D1 and a target direction image D2 based on the shot position B of the shot number “2” are displayed.

  The second embodiment of the present invention has been described above. According to the present embodiment, for example, when detecting a shot, the flight distance measuring device measures a target direction, measures a hitting ball direction based on a ball stop position of consecutive shots, and determines the target direction and the hitting ball direction. The relative hitting direction with respect to the target direction is measured based on the difference. Thereby, the hitting direction can be obtained easily and accurately.

<Modification>
The present invention is not limited to the above-described embodiments, and can be implemented in various modes without departing from the scope of the invention. For example, the following modifications may be added to the above embodiments, for example.

  For example, in the second embodiment, the function of the flight distance measurement unit 106 is not essential. In this case, the flight distance measuring device 2 may be called a hitting direction measuring device.

  In each of the above embodiments, the position information to be acquired can be two-dimensional (latitude and longitude) information, but may be three-dimensional (latitude, longitude and altitude) information.

  Specifically, for example, the position information acquisition unit 102 acquires three-dimensional position information from the GPS reception unit 11. Alternatively, for example, the position information acquisition unit 102 acquires the altitude of the position indicated by the position information based on the two-dimensional position information acquired from the GPS reception unit 11 and the map information including the altitude information. Or, for example, a barometric altimeter is built in or connected to the flight distance measuring device 2, and the position information acquisition unit 102 is based on the two-dimensional position information acquired from the GPS receiving unit 11 and the output signal of the barometric altimeter. The altitude of the position indicated by the position information is acquired.

  The stop position measuring unit 105 sets three-dimensional position information at the stop position 143 of the shot information 140. Further, the flight distance measurement unit 106 calculates the distance between the three-dimensional ball stop positions of two consecutive shots as the flight distance of the hit ball, and sets it as the flight distance 144 of the shot information 140. In this way, even when the golf course is inclined, for example, a more accurate flight distance can be calculated.

  In each of the above embodiments, the stop position measuring unit 105 may calculate the distance (remaining distance) between the ball stop position of each shot and a predetermined target position (for example, the position of the hole cup). . In this case, for example, the output unit 107 may display the designated hole number and the remaining distance corresponding to the shot number in the shot information area 510. In this way, an accurate remaining distance can be easily presented as information useful for improving the player.

  In each of the above embodiments, the control unit 10 may include a shot evaluation unit. For example, the shot evaluation unit evaluates the shot according to a predetermined rule based on the shot flight distance. For example, the shot evaluation unit calculates the average flight distance of the tee shot from the past shot information 140, and when the flight distance of the evaluation target tee shot exceeds the average flight distance, ) ”. In this case, for example, the output unit 107 may display the evaluation corresponding to the designated hole number and shot number in the shot information area 510. Note that the output unit 107 may display an indicator such as an average flight distance of tee shots on the screen 500. Of course, the shot evaluation method is not limited to the above. For example, the shot may be evaluated based on the size of the shot hitting direction (difference from the target direction). Further, for example, the shot may be evaluated based on the flight distance of the shot and the size of the shot in the hitting direction.

  In each of the above embodiments, a single sensor device 3 includes a plurality of sensors, but this is not a limitation. For example, a plurality of sensor devices may be prepared, one or more sensors may be mounted on each sensor device, and each sensor device and the flight distance measuring device may be connected. In this case, the plurality of sensor devices can be mounted at different positions, for example, mounted on a golf club and a player.

  In each of the above embodiments, the sensor device 3 includes a triaxial acceleration sensor and a triaxial angular velocity sensor, but is not limited to this mode. For example, the acceleration sensor may be uniaxial or biaxial, and the angular velocity sensor may be uniaxial or biaxial. Further, for example, the sensor device 3 may not include an acceleration sensor.

  In each of the above embodiments, the flight distance measuring device 2 uses the built-in GPS receiving unit 11, but is not limited to this mode. For example, the flight distance measuring device 2 may be connected to an external GPS receiver. In this way, the flight distance measuring device 2 can use an external GPS receiver when the GPS receiver is not provided, and the GPS with higher positional information accuracy even when the GPS receiver is provided. A receiver can be used. That is, the flight distance measurement system 1 can be configured by the flight distance measurement device 2, the sensor device 3, and a GPS receiver that is built in or externally attached to the flight distance measurement device 2. Alternatively, the sensor device 3 may incorporate a GPS receiving unit and output position information to the flight distance measuring device 2. Further, for example, the flight distance measuring device 2 may be configured such that the position information acquisition unit 102 acquires the current position information from a wireless base station or a server on the network via the first communication unit 12.

  In said 2nd embodiment, although the flight distance measuring device 2 uses the sensor part 17 incorporated, it is not restricted to this aspect. For example, the flight distance measuring device 2 may be connected to an external magnetic sensor and acceleration sensor. That is, the flight distance measurement system 1 can be configured by a flight distance measurement device 2, a sensor device 3, and a magnetic sensor and an acceleration sensor built in or externally attached to the flight distance measurement device 2. Alternatively, the sensor device 3 may incorporate a magnetic sensor and output a signal to the flight distance measuring device 2.

  In each of the embodiments described above, the flight distance measuring device 2 accumulates shot information in a storage device such as the storage unit 14, but is not limited to this mode. For example, the output unit 107 transmits the shot information of each hole for each golf course stored in the storage device to the server on the network via the first communication unit 12 together with the user information. For example, the server accumulates shot information of each hole for each golf course for each user. In addition, for example, the server calculates an index such as an average flight distance of a tee shot based on shot information of each user, obtains a ranking of the user for each index, and publishes it on the WEB.

  The configuration of the flight distance measuring device 2 shown in FIGS. 2 and 6 is classified according to the main processing contents in order to facilitate understanding of the configuration of the flight distance measuring device 2. The present invention is not limited by the way of classification and names of the constituent elements. The configuration of the flight distance measuring device 2 can be classified into more components depending on the processing content. Moreover, it can also classify | categorize so that one component may perform more processes. Further, the processing of each component may be executed by one hardware or may be executed by a plurality of hardware. Further, the sharing of processing or function of each component is not limited to the above-described one as long as the object of the present invention can be achieved.

  The processing units of the flowcharts shown in FIGS. 4 and 9 are divided according to the main processing contents in order to facilitate understanding of the processing of the flight distance measuring device 2. The present invention is not limited by the way of dividing the processing unit or the name. The processing of the flight distance measuring device 2 can be divided into more processing units according to the processing contents. Moreover, it can also divide | segment so that one process unit may contain many processes. Further, the processing order of the above flowchart is not limited to the illustrated example.

  Further, the configuration of the shot information illustrated in FIGS. 3 and 7 is not limited to the illustrated one. 5 and 10 are not limited to the illustrated configurations.

1: flight distance measurement system, 2: flight distance measurement device, 3: sensor device, 10: control unit, 11: GPS reception unit, 12: first communication unit, 13: second communication unit, 14: storage unit 15: operation unit, 16: display unit, 17: sensor unit, 101: sensor information acquisition unit, 102: position information acquisition unit, 103: map information acquisition unit, 104: shot detection unit, 105: stop position measurement unit, 106: flying distance measurement unit, 107: output unit, 108: hitting ball direction measuring unit, 140: shot information, 141: hole number, 142: shot number, 143: stop position, 144: flight distance, 145: hitting ball direction, 500 : Screen, 510: shot information area, 520: hole image area, C: club, D1: hitting direction image, D2: target direction image, P: user

Claims (12)

A first acquisition unit for acquiring a sensor signal from a motion sensor attached to at least one of the exercise equipment and the user;
A second acquisition unit for acquiring position information;
A shot detector for detecting a shot based on the sensor signal;
Based on the position information when the shot is detected, a position measurement unit that measures a shot position;
A flight distance measuring device comprising: a flight distance measuring unit that measures a flight distance of a hit ball by the shot based on a distance between the previous shot position and the current shot position. The flight distance measuring device according to claim 1,
The position measuring unit measures the shot position of the Nth shot as a stop position of the ball hit by the (N-1) th shot when N is an integer equal to or greater than 2.
The flight distance measuring unit is configured to stop the ball at the N-2th shot (when N = 2, the shot position at the first shot), and the ball stop position at the N-1th shot. Is measured as the flight distance of the (N-1) th shot. The flight distance measuring device according to claim 1 or 2,
The shot detection unit is a flight distance measuring device that detects the shot when an impact on a ball is detected. The flight distance measuring device according to claim 2,
The shot detection unit detects the end of the hole based on the sensor signal or based on a predetermined operation input,
The position measurement unit measures the position information when the end of the hole is detected as a stop position of the ball of the last shot in the hole,
The flight distance measurement unit measures the flight distance of the last shot based on the stop position of the ball of the last previous shot in the hole and the stop position of the ball of the last shot. Flying distance measuring device. The flight distance measuring device according to claim 2,
The position measuring unit is a flight distance measuring device that measures a distance from a stop position of the ball of each shot to a predetermined target position. The flight distance measuring device according to claim 1,
The position measuring unit measures the altitude together with the shot position,
The flight distance measurement unit is a flight distance measurement device that measures the flight distance of the shot based on the shot position and the altitude. The flight distance measuring device according to claim 1,
The rank second acquisition unit is a flight distance measurement device that acquires the position information from a GPS receiver carried by the user. A first acquisition unit for acquiring a first sensor signal from a motion sensor attached to at least one of the exercise equipment and the user;
A second acquisition unit for acquiring position information;
A shot detector for detecting a shot based on the sensor signal;
Based on the position information when the shot is detected, a position measurement unit that measures a shot position;
A hitting direction measuring device having a hitting direction measuring unit that measures the hitting direction of the shot based on the previous shot position and the current shot position. It is a hitting direction measuring device according to claim 8,
The second acquisition unit acquires a second sensor signal from an orientation sensor attached to at least one of the exercise equipment and the user,
The hitting direction measuring unit is a hitting direction measuring device that measures a target direction of the shot based on the second sensor signal and calculates a difference between the target direction and the hitting direction. A motion sensor attached to at least one of the exercise equipment and the user;
A GPS receiver;
A first acquisition unit for acquiring a sensor signal from the motion sensor;
A second acquisition unit for acquiring position information from the GPS reception unit;
A shot detector for detecting a shot based on the sensor signal;
Based on the position information when the shot is detected, a position measurement unit that measures a shot position;
A flight distance measurement system comprising: a flight distance measurement unit that measures a flight distance of a hit ball by the shot based on a distance between the previous shot position and the current shot position. A first acquisition step of acquiring a sensor signal from a motion sensor attached to at least one of the exercise equipment and the user;
A second acquisition step of acquiring position information;
A shot detection step of detecting a shot based on the sensor signal;
A position measuring step for measuring a shot position based on the position information when the shot is detected;
A flight distance measurement method including a flight distance measurement step of measuring a flight distance of a hit ball by the shot based on a distance between the previous shot position and the current shot position. A first acquisition step of acquiring a sensor signal from a motion sensor attached to at least one of the exercise equipment and the user;
A second acquisition step of acquiring position information;
A shot detection step of detecting a shot based on the sensor signal;
A position measuring step for measuring a shot position based on the position information when the shot is detected;
A program for causing a computer to execute a flight distance measuring step of measuring a flight distance of a hit ball by the shot based on a distance between the previous shot position and the current shot position.

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