JP2019097853A - Feedback device, feedback method and feedback program - Google Patents

Abstract

To provide a technique capable of further improving an exercise performance in a striking exercise using rotational motion of a body.SOLUTION: A feedback device comprises an exercise information acquisition part, and a first or second feedback part. The exercise information acquisition part acquires time series information of rotational motion of a body of an object person. The first feedback part detects a peak time when magnitude of the rotational motion becomes maximum, and outputs the peak time so as to be recognized. The second feedback part outputs time series information of the rotational motion so as to be recognized.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a feedback device, a feedback method, and a feedback program for feeding back, to a subject, time-series information of rotational motion of the body of the subject.

  There is a technology that enables a target person (actor) to objectively grasp the difference between his or her physical motion and the physical motion of a skilled person in order to properly acquire the basic motion of sports. For example, the technique described in Patent Document 1 is known as the prior art. In Patent Document 1, the difference between the information obtained by the biometric sensor of the target person and the information acquired by the biometric sensor of the person serving as a model can be fed back as a sound, etc., so that the difference between the model and one's own exercise state can be grasped Technology is disclosed.

Unexamined-Japanese-Patent No. 2016-150107

  The technology described in Patent Document 1 is intended to assist the target person to approach the exercise state of the model by comparing the information of the electrocardiogram information and the information of the myoelectric potential with the model and making the difference audible by sound or the like. is there. When considering batting motions such as batting, training is performed for a very short period of movement, particularly near the time when the ball hits the bat. However, in the prior art, since the entire section from ball release to swing completion is made audible, there is a problem that it is difficult to recognize the difference in the movement of the timing at which the rotational movement of the body changes significantly.

  This invention is made in view of said subject, and it aims at providing the technique which is easy to improve exercise | movement performance in the batting movement which utilized the rotational movement of the body.

  The feedback device of the present invention includes a motion information acquisition unit, and a first feedback unit or a second feedback unit. The exercise information acquisition unit acquires time-series information of the rotational movement of the subject's body. The first feedback unit detects a peak time, which is a time at which the magnitude of the rotational movement is maximum, and perceptually outputs the peak time. The second feedback unit perceptually outputs time-series information of rotational motion.

  The timing at which the magnitude of the rotational motion of the body is maximized or the change in the magnitude of the rotational motion is important in batting motion utilizing the rotational motion of the body, but it is difficult for the subject person to recognize it. According to the feedback device of the present invention, the subject can recognize the timing at which the magnitude of the rotational movement is maximum or the change in the magnitude of the rotational movement. Therefore, it is easier to improve exercise performance.

The figure which shows the change of the angular velocity of the waist based on the time of the pitcher of a softball releasing a ball. The figure which shows the change of the angular velocity of the waist on the basis of impact time. The figure which shows the change of the angular velocity of the waist on the basis of the impact time when knowing a ball type. The figure which shows the change of the angular velocity of the waist on the basis of the impact time when not knowing a ball type. The chart shows the average peak time based on the impact time, with top and young players, and with and without knowledge of the ball type. The figure which shows the structural example of the feedback apparatus of Example 1 and its modification. The figure which shows the process flow example of the feedback apparatus of Example 1 and its modification. The figure which shows the structural example of the feedback apparatus of Example 2 and its modification. The figure which shows the process flow example of the feedback apparatus of Example 2 and its modification. The figure which shows the structural example of the feedback apparatus of Example 3 and its modification. The figure which shows the process flow example of the feedback apparatus of Example 3 and its modification. The figure which shows the structural example of the feedback apparatus of Example 4 and its modification. The figure which shows the process flow example of the feedback apparatus of Example 4 and its modification. The figure which shows the structural example of the feedback apparatus of Example 5 and its modification. The figure which shows the process flow example of the feedback apparatus of Example 5 and its modification. FIG. 16 is a view showing an example of the arrangement of a feedback apparatus according to a sixth embodiment; FIG. 18 is a diagram showing an example of a process flow of a configuration added to the feedback device of the sixth embodiment. FIG. 18 is a view showing an example of the configuration of a feedback device according to a modification of the sixth embodiment. FIG. 18 is a diagram showing an example of process flow of a feedback device of a modification of the sixth embodiment.

  Hereinafter, embodiments of the present invention will be described in detail. Note that components having the same function will be assigned the same reference numerals and redundant description will be omitted.

<Analysis to be the basis of the present invention>
FIG. 1 shows the change in the angular velocity of the waist relative to when the softball pitcher releases the ball. FIG. 1 (A) shows the case of the top player, and FIG. 1 (B) shows the case of the young player. The ball type was straight (fast ball) and change-up, and the player was measured without knowing the ball type. The horizontal axis is time (seconds) and time 0 is when the pitcher releases the ball. The vertical axis is the waist angular velocity (degree / second). When the solid line is straight, the dotted line indicates the change-up case, and one line indicates one trial. In the case of the top player, it can be seen that the peak time, which is the time at which the magnitude of the angular velocity based on the time of release is maximum, differs depending on the ball type. On the other hand, it can be seen that young players have no clear difference in peak time depending on the ball type. That is, it can be seen that the highly skilled player adjusts the timing to rotate the hips according to the ball type.

  FIG. 2 shows the change in the angular velocity of the hip based on the impact time (the time when the ball contacts the bat). FIG. 2 shows the result of FIG. 1 normalized so that the impact time is 0 seconds, FIG. 2 (A) is for the top player, and FIG. 2 (B) is for the young player. . From FIG. 2, top players concentrate (bias) in a time section where there is a difference between the peak time, which is the time when the hip angular velocity is maximum, and the impact time, regardless of the ball type. It can be seen that the difference with the time varies.

  FIG. 3 shows the change in the angular velocity of the hip based on the impact time when the ball type is known, and FIG. 4 shows the change in the angular velocity of the hip based on the impact time when the ball type is unknown. Similar to FIG. 2, these figures are obtained by normalizing changes in the hip angular velocity in each trial, with the impact time as zero. FIG. 5 is a graph in which the average value of peak times based on the impact time is graphed with and without knowing the top player, the young player, and the ball type. FIGS. 3 (A), 4 (B), and 5 (A) are for top players, and FIGS. 3 (B), 4 (B), and 5 (B) are for young players.

  From this result, the top athlete concentrates (biases) on the time section where there is a difference between the peak time and the impact time regardless of whether he knows the ball type, but when young players do not know the ball type and Even if the ball type is known, in the case of change-up, it can be said that the difference between the peak time and the impact time tends to be large.

It is as follows in summary.
(1) The top player has a larger difference in average ball time (peak speed) per peak time of the hip angular velocity based on the ball release time when it is tried multiple times than the young player (2) top The distribution of peak time of the hip angular velocity is smaller than the younger players than the younger players, (3) The top players are more likely to bat on change than younger players The distribution of peak time distribution of hip angular velocity with reference to impact time is small (4) Young players are more likely to know the ball type than top players, based on impact time as reference There is a large difference between the distribution of peak time of angular velocity and the distribution of peak time of hip angular velocity based on the impact time when you do not know the ball type. The body's movements can be properly matched to the In other words, the difference between the peak time and the impact time (time width) can be made uniform to a fixed time width regardless of the type of ball.

  According to the present invention, based on the above findings, the target person can recognize the peak time and the impact time, the size of the rotational movement of the body and the impact time based on the biological information acquired by the inertial sensor attached to the subject. By doing this, it is possible to recognize the timing of the rotational movement and provide feedback that contributes to the improvement of the performance of the subject. Alternatively, even without using an inertial sensor, a reflection marker or the like may be attached on the rotation axis of the target, and calculation may be made from position information obtained from motion capture or video, or human motion such as a Kinect is identified. The existing video information that can be used may be used. In the above analysis, batting against a flying ball is analyzed, but the present invention can also be applied to batting movements using rotational movements of other bodies (such as the waist and body). For example, by focusing on the difference between peak time and impact time in tennis strokes, toss batting, tee batting, golf, boxing hooks, straight punches, etc., it is possible to provide feedback that contributes to the performance improvement of the target person.

<Specific configuration>
The structural example of the feedback apparatus of Example 1 is shown in FIG. 6, and the example of a processing flow of the feedback apparatus of Example 1 is shown in FIG. The feedback device 100 includes at least a motion information acquisition unit 110 and a first feedback unit 120.

  The exercise information acquisition unit 110 acquires time-series information (information about time and size) of rotational movement of the subject's body (S110). The magnitude of the rotational movement is, for example, the speed (angular velocity) of rotation, acceleration, or the like. In short, any information that can acquire an index corresponding to the size (or speed) of the rotational movement may be used. Such information can be acquired by the biological sensor attached to the subject. For example, when acquiring angular acceleration, it is an inertial sensor or the like. As for the attachment position of the sensor, although the sensor is attached to the subject's waist in the above-mentioned experiment, it may be any place where it is possible to obtain an index corresponding to the size of the rotational movement of the body. It is not limited. In addition, as described above, even if a biometric sensor is not attached to a subject, a reflection marker or the like may be attached on the rotational axis of the subject, and calculation may be performed from position information obtained from motion capture or video. It is possible to use existing video information that can identify such human motion.

  The first feedback unit 120 detects a peak time which is a time at which the magnitude of the rotational movement is maximum (S121), and perceptually outputs the peak time (S122). For example, the motion information acquisition unit 110 acquires time-series information of rotational motion for each time section. In this case, the first feedback unit 120 indicates that the time series information of the rotational motion in the time interval t acquired from the motion information acquisition unit 110 indicates that the rotational motion is larger than a predetermined threshold, and the rotation in the time interval t The time when the magnitude of the motion becomes smaller than the magnitude of the rotational motion of the immediately preceding time interval t-1 is detected (S121), and the peak time may be perceptually output (S122). In peak detection, local maximum values are acquired, but when there are a plurality of peak times in one trial, the peak time at which the magnitude of rotational motion is maximum is taken as the final peak time (S121). That is, the first feedback unit 120 feeds back the target person by outputting a predetermined sound near the time when the magnitude of the rotational movement is maximized. “Perceptually output” means that the subject can be recognized by sound, light, force or the like. In the case of discretely outputting a predetermined sound near the peak time, the time during which one sound is output should be short. Also, the threshold may be updated as appropriate.

  If the subject uses the feedback device 100 during batting motion, a batting noise is generated at the moment of impact, and the impact is also transmitted via the bat or the like, so that the subject can recognize the impact time. On the other hand, the timing (peak time) at which the magnitude of the rotational motion of the body is maximum is important in batting motion utilizing the rotational motion of the body, but it is difficult for the subject person to recognize it. Therefore, if the feedback device 100 perceptually outputs the peak time, the target person can recognize the peak time, the impact time, and their intervals. Therefore, it is easier to improve exercise performance.

[Modification 1]
FIG. 6 shows a configuration example of the feedback device of the first modification of the first embodiment, and FIG. 7 shows a processing flow example of the feedback device of the first modification of the first embodiment. The first feedback unit 120 can also make a sound at a timing other than the peak time so that the target person can easily understand. For example, the timing of the ball release input from the external device 920 or the timing when the magnitude of the rotational movement of the body becomes a certain value or more may be used. The sounds at this time may be different from each other. Other configurations and processes are the same as in the first embodiment.

  Even in the case of this modification, since the time width of the peak time and the impact time is ideally constant, the target person can achieve high exercise performance by encouraging the target person to train so as to approach the ideal time width. We can support to be able to exercise close to human exercise.

[Modification 2]
FIG. 6 shows a configuration example of a feedback device according to the second modification of the first embodiment, and FIG. 7 shows a processing flow example of the feedback device according to the second modification of the first embodiment. The feedback device 100 may also include an impact detection unit 160, an impact feedback unit 170, and a recording unit 190. The impact detection unit 160 detects an impact time, which is a time when contact is made between an impact giving material to which an impact is given and an impact giving material to which an impact is given (S1661, S162). The "hit giving material" is an object giving a hit to a ball or the like, and is, for example, a bat, a racket, a boxing glove or the like. The "object to be hit" is an object to be hit by a hit, such as a ball or a sandbag. Specifically, the impact detection unit 160 may detect distortion, vibration, or acceleration with a sensor attached to a bat or the like, or an image may be acquired with a camera, and the impact is detected at constant intervals. Get impact information. Then, when the condition for judging that it is a predetermined impact is satisfied, it may be judged as impact detection. The impact feedback unit 170 perceptually outputs the impact time (S170).

  If the target person uses the feedback device 100 during batting motion, a batting noise is generated at the moment of impact, so the impact detection unit 160 and the impact feedback unit 170 are not provided as described in the first embodiment. It is also good. On the other hand, in the case of using the target person to check his or her own exercise performance immediately after trying the batting movement, the impact detection unit 160 and the impact feedback unit 170 are required. In this case, the first feedback unit 120 records the peak time in the recording unit 190, and the impact feedback unit 170 records the impact time in the recording unit 190. Then, the first feedback unit 120 outputs an output for recognizing the peak time, and the impact feedback unit 170 outputs an output for recognizing the impact time at a timing according to the time (S122, S170).

  If the impact detection unit 160 and the impact feedback unit 170 are also provided, the peak time and the impact time can be confirmed later as well as during batting exercise, so it is easy for the subject person to objectively confirm exercise performance.

  FIG. 8 shows a configuration example of the feedback device of the second embodiment, and FIG. 9 shows a processing flow example of the feedback device of the second embodiment. The feedback device 101 includes at least a motion information acquisition unit 110 and a second feedback unit 130. The exercise information acquisition unit 110 acquires time-series information of the rotational movement of the subject's body (S110). The exercise information acquisition unit 110 is the same as that of the first embodiment. The second feedback unit 130 perceptually outputs time series information of rotational motion (S130).

For example, the sound is output such that the volume increases or the frequency increases as the rotational motion increases (as the magnitude of the amplitude value of the rotational velocity increases). Alternatively, the vibration device attached to the subject is vibrated such that the larger the amplitude value of the rotational angular velocity, the larger the vibration.
While the first feedback unit 120 of the first embodiment presents feedback information only near the peak time, the second feedback unit 130 has a magnitude of rotational motion that gradually increases from the ball release time toward the peak time. Continuous feedback information is presented, as perceptible.

  The change in the size of the rotational movement of the body is important in the batting movement using the rotational movement of the body, but it is difficult for the subject person to recognize it. According to the feedback device 101, the subject can recognize a change in magnitude of the rotational movement. Therefore, it is easier to improve exercise performance.

[Modification 1]
FIG. 8 shows a configuration example of a feedback device of the first modification of the second embodiment, and FIG. 9 shows a processing flow example of the feedback device of the first modification of the second embodiment. The feedback device 101 may also include an impact detection unit 160, an impact feedback unit 170, and a recording unit 190. The impact detection unit 160 detects an impact time, which is a time when the hit giving object and the hit giving thing come into contact (S1661, S162). The impact feedback unit 170 perceptually outputs the impact time (S170). The impact detection unit 160 and the impact feedback unit 170 are the same as in the second modification of the first embodiment.

  If the target person uses the feedback device 101 during batting motion, a batting noise is generated at the moment of impact, so the impact detection unit 160 and the impact feedback unit 170 are not provided as described in the second embodiment. It is also good. On the other hand, in the case of using the target person to check his or her own exercise performance immediately after trying the batting movement, the impact detection unit 160 and the impact feedback unit 170 are required. In this case, the second feedback unit 130 records the time series information of the rotational movement in the recording unit 190, and the impact feedback unit 170 records the impact time in the recording unit 190. Then, the second feedback unit 130 outputs an output for recognizing the magnitude of the rotational movement, and the impact feedback unit 170 outputs an output for recognizing the impact time at a timing according to the time (S130, S170).

  If the impact detection unit 160 and the impact feedback unit 170 are also provided, the size of the rotational movement and the impact time can be confirmed later as well as during the batting movement, so it is easy for the subject person to objectively confirm the exercise performance.

  FIG. 10 shows a configuration example of the feedback device of the third embodiment, and FIG. 11 shows a processing flow example of the feedback device of the third embodiment. The feedback device 102 includes at least a motion information acquisition unit 110, a first feedback unit 120, a second feedback unit 130, and a switching unit 140. The exercise information acquisition unit 110 acquires time-series information of the rotational movement of the subject's body (S110). The first feedback unit 120 detects a peak time which is a time at which the magnitude of the rotational movement is maximum (S121), and perceptually outputs the peak time (S122). The second feedback unit 130 perceptually outputs time series information of rotational motion (S130). The switching unit 140 selects and outputs one of the output of the first feedback unit 120 and the output of the second feedback unit 130 (S140). Note that which of the first feedback unit 120 and the second feedback unit 130 is to be operated may be selected before step S110.

  Inexperienced persons tend to have more variation in the magnitude of peak values than the variation in peak and impact duration. That is, the rotation of the body (for example, how to swing the bat) itself is less stable than the timing of the rotational movement. Therefore, it is thought that it will be easier to improve first by training so that the body can be used stably so that the peak sizes can be aligned. On the other hand, if you gain experience to a certain extent, you will be able to use the body stably (the size of the peak will be stable), so train the variation of the time width between peak time and impact time to be aligned Further improvement is expected.

  In the case of the feedback device 102, the first feedback unit 120 (configuration for feeding back the timing) and the second feedback unit 130 (configuration for feeding back the magnitude) can be switched according to the level of the target person. You can select the function.

[Modification 1]
FIG. 10 shows a configuration example of a feedback device of the first modification of the third embodiment, and FIG. 11 shows a processing flow example of the feedback device of the first modification of the third embodiment. The third embodiment has been described on the premise that the switching unit 140 directly instructs from the outside whether to select the first feedback unit 120 or to select the second feedback unit. The switching unit 140 may switch the type (timing or magnitude) of feedback based on the input basic information. "Basic information" is information for specifying the type (timing or size) of information to be fed back to the target person. For example, the level of the subject, the execution scene of the feedback device (practice environment / practice environment), and the like.

If the basic information is at the level of the subject's skill level, for example,
・ Level A: Professional player (Top player)
Level B: Experienced person Level C: A beginner, and information indicating which of the target person's level is A, B, or C is basic information. On the other hand, the switching unit 140 performs timing feedback (operating the first feedback unit 120) if level A, and feedback of magnitude (operating the second feedback unit) if level B or C. Choose

  If the basic information is an execution scene, size feedback (operating the second feedback unit) if it is a practice environment (toss batting, tee batting etc.), and if it is a practice environment, timing feedback (first feedback unit Select 120).

  According to the feedback device 102 of the first modification of the third embodiment, appropriate information can be fed back according to the level of the subject, the execution scene, and the like.

[Modification 2]
FIG. 10 shows a configuration example of a feedback device of the second modification of the third embodiment, and FIG. 11 shows a processing flow example of the feedback device of the second modification of the third embodiment. The third embodiment has been described on the premise that the switching unit 140 directly instructs from the outside whether to select the first feedback unit 120 or to select the second feedback unit. However, the switching unit 140 may further have a level determination function. For example, the target person is made to perform batting motion several times first, and the time-series information of rotational motion for each time interval acquired by the motion information acquisition unit 110 is recorded in the recording unit 190. Then, the switching unit 140 obtains the peak size in each trial, calculates an index indicating variation in peak size for a plurality of trials (for example, all trials), and the index indicating the peak size is predetermined. If it is the threshold value or more, the second feedback unit 130 may be selected, and if not, the first feedback unit 120 may be selected.

  If it is the feedback apparatus 102 of the modification 2 of Example 3, it can feed back with the suitable information according to the level of the confirmed subject.

[Modification 3]
FIG. 10 shows a configuration example of a feedback device of the third modification of the third embodiment, and FIG. 11 shows a processing flow example of the feedback device of the third modification of the third embodiment. The feedback device 102 may also include an impact detection unit 160, an impact feedback unit 170, and a recording unit 190. The impact detection unit 160 detects an impact time, which is a time when the hit giving object and the hit giving thing come into contact (S1661, S162). The impact feedback unit 170 perceptually outputs the impact time (S170). The impact detection unit 160 and the impact feedback unit 170 are the same as in the second modification of the first embodiment.

  If the target person uses the feedback device 102 during batting motion, a batting noise is generated at the moment of impact, so the impact detection unit 160 and the impact feedback unit 170 may be omitted. On the other hand, in the case of using the target person to check his or her own exercise performance immediately after trying the batting movement, the impact detection unit 160 and the impact feedback unit 170 are required. In this case, the first feedback unit 120 records the peak time in the recording unit 190, the second feedback unit 130 records the time series information of the rotational movement in the recording unit 190, and the impact feedback unit 170 records the impact time Record at 190. Then, an output for recognizing the peak time according to the selection of the switching unit 140 or an output for recognizing the magnitude of the rotational movement and an output for recognizing the impact time are output at timing according to the time (S122, S130, S170 ).

  If the impact detection unit 160 and the impact feedback unit 170 are also provided, the peak time, the size of the rotational movement and the impact time can be confirmed later as well as during the striking movement, so the subject person objectively confirms the exercise performance Cheap.

  FIG. 12 shows a configuration example of the feedback device of the fourth embodiment, and FIG. 13 shows a processing flow example of the feedback device of the fourth embodiment. The feedback device 103 includes an exercise information acquisition unit 110, a first feedback unit 120, an impact detection unit 160, an impact feedback unit 170, an information presentation unit 180, and a recording unit 190. The fourth embodiment uses virtual reality (VR).

  The recording unit 190 records an image related to the exercise environment. The information presentation unit 180 presents an image related to the exercise environment to the subject (S180). "Image about motion environment" is a picture of a pitcher throwing a ball and a picture of a ball in the case of baseball and softball, and a picture of a opponent player hitting a ball and a picture of a ball in tennis and a case of golf Is the ball to hit. More specifically, in the case of baseball or softball, the information presentation unit 180 determines the ball type and ball speed thrown by the pitcher in the virtual environment presented to the target person, and uses the ball type and ball speed information. It is sufficient to present a corresponding pitch image. The impact detection unit 160 acquires information on impact in a state where there is no actual ball (S161). For example, the camera acquires an image of a bat operated by the subject. Then, the impact detection unit 160 determines that the impact is detected when the bat comes to a position expected to contact with the virtual ball (S162). Even if the camera image is not used, the trajectory of the bat is obtained from the information acquired by the position sensor attached to the bat or the acceleration sensor, and it is determined whether the ball hits the bat by superimposing on the virtual ball position The impact may be detected by a known collision determination technique. In the case of the feedback device 103, since an actual striking sound does not occur, the impact detection unit 160 and the impact feedback unit 170 are necessary even when the subject uses the feedback device 103 during striking movement.

  The exercise information acquisition unit 110, the first feedback unit 120, and the impact feedback unit 170 are the same as in the first embodiment. According to the feedback device 103, exercise performance can be improved even in a virtual environment.

  In addition, if the first feedback unit 120 records the peak time in the recording unit 190 in step S122 and the impact feedback unit 170 records the impact time in the recording unit 190 in step S170, not only during batting exercise but also the target The person can confirm the exercise performance even after the striking movement.

[Modification 1]
FIG. 12 shows a configuration example of a feedback device of the first modification of the fourth embodiment, and FIG. 13 shows a processing flow example of the feedback device of the first modification of the fourth embodiment. The recording unit 190 also records a peak time and an impact time sample corresponding to the image related to the exercise environment. The “sample” is, for example, a model such as a peak time and an impact time of a top player, and a peak time and an impact time to be targeted by the target person. A representative value of peak times and impact times of top players acquired from a plurality of top players may be used. A plurality of types of samples may be prepared and selected appropriately for use. The information presentation unit 180 perceptually outputs the information of the sample together with the image about the exercise environment. The timing of the perceptible output is adjusted according to the type of ball thrown by the pitcher of the virtual environment and the speed of the ball. Further, the output of the peak time and the impact time of the sample may be different from the peak time and the impact time of the subject person. For example, different sounds may be used.

  According to the feedback device 103 of this modification, the target person can perceive the difference between the peak time of the person whose exercise performance is high as a model and the peak time of his own, so the exercise performance is further improved. Cheap.

[Modification 2]
FIG. 12 shows a configuration example of a feedback device of the first modification of the fourth embodiment, and FIG. 13 shows a processing flow example of the feedback device of the first modification of the fourth embodiment. The recording unit 190 also records timing information corresponding to an image related to the exercise environment. The “timing information” is information for presenting the timing to the subject. The information presentation unit 180 perceptually outputs the timing information together with the image related to the motion environment. The timing of the perceptible output is adjusted according to the type of ball thrown by the pitcher of the virtual environment and the speed of the ball.

  For example, information that counts down in the form of "3, 2, 1, 0" may be presented on the VR video, or it may be presented in the form that the sound gets louder, or on the VR video The color of the ball may be changed gradually.

  According to the feedback device 103 of the present modified example, the target person can recognize the timing, so it is easy to further improve the exercise performance.

  FIG. 14 shows a configuration example of the feedback device of the fifth embodiment, and FIG. 15 shows a processing flow example of the feedback device of the fifth embodiment. The feedback device 104 includes an exercise information acquisition unit 110, a second feedback unit 130, an impact detection unit 160, an impact feedback unit 170, an information presentation unit 180, and a recording unit 190. The fifth embodiment also uses virtual reality (VR).

  The recording unit 190 records an image related to the exercise environment. The information presentation unit 180 presents an image related to the exercise environment to the subject (S180). More specifically, in the case of baseball or softball, the information presentation unit 180 determines the type and speed of the ball thrown by the pitcher of the virtual environment presented to the target person, and uses the information on the type and speed of the ball. It is sufficient to present a corresponding pitch image. The impact detection unit 160 acquires information on impact in a state where there is no actual ball (S161). For example, an image is acquired by a camera. Then, the impact detection unit 160 determines that the impact is detected when the bat comes to a position expected to contact with the virtual ball (S162).

  The exercise information acquisition unit 110, the second feedback unit 130, and the impact feedback unit 170 are the same as in the second embodiment. According to the feedback device 104, exercise performance can be improved even in a virtual environment.

  In addition, if the second feedback unit 130 records the time series information of the rotational movement in the recording unit 190 in step S130, and the impact feedback unit 170 records the impact time in the recording unit 190 in step S170, only during the striking movement. Instead, the subject can confirm exercise performance even after the striking movement.

[Modification 1]
FIG. 14 shows a configuration example of a feedback device of the first modification of the fifth embodiment, and FIG. 15 shows a processing flow example of the feedback device of the first modification of the fifth embodiment. The recording unit 190 also records time-series information of rotational movement of the body and a sample of impact time corresponding to the image related to the movement environment. The “sample” is, for example, a model such as time-series information of rotational movements of the bodies of a plurality of top players, time-series information of rotational movements of the body targeted by the subject person, and the like. The information presentation unit 180 perceptually outputs the information of the sample together with the image about the exercise environment. The timing of the perceptible output is adjusted according to the type of ball thrown by the pitcher of the virtual environment and the speed of the ball. The output of the time series information of the rotational movement may be sound, may be presented as a VR image, or may be presented by vibrating a vibrating device or the like attached to the subject.

  In addition, as the “sample”, for example, a model such as peak times and impact times of a plurality of top players, peak times targeted by the target person and impact times may be recorded in the recording unit 190. In this case, the feedback of the subject's own exercise performance is time-series information of rotational movement, but the information presented as a sample is the peak time and the impact time. Even with this method, it is easy to grasp the difference between the model and the subject person.

  According to the feedback device 104 of this modification, the target person can perceive the difference between the peak time of a person with high model exercise performance as a model and his own peak time, thereby further improving the exercise performance. Cheap.

  Although not illustrated, also in the case of using virtual reality (VR), as in the third embodiment and the modification thereof, the configuration including both the first feedback unit 120 and the second feedback unit 130 and the switching unit 140 It may be In this case, the same effect as that of the third embodiment can be obtained while using virtual reality.

  FIG. 16 shows a configuration example of the feedback device of the sixth embodiment, and FIG. 17 shows a processing flow example of the configuration added in the sixth embodiment. In each of the above-described embodiments, an example has been described in which feedback is provided by perceptually presenting the peak time of the magnitude of rotational motion of the subject's body. In batting motion, it is also important that the peak of the motion of the batting material (operated by the subject such as a bat and hit a ball, etc.) matches the motion of the body, as well as rotational and translational motion of the body. It becomes. Therefore, in addition to any one of the feedback devices 100, 101, 102, 103, and 104 of the first to fifth embodiments, the feedback device 105 also includes an impact imparting object motion information acquisition unit 115 and a third feedback unit 125. The impact imparting object exercise information acquiring unit 115 acquires time-series information of the exercise of the impact imparting object (S115). The third feedback unit 125 acquires the magnitude (rotational angular velocity, acceleration, translational velocity, acceleration, etc.) of the movement of the impacting material, and perceptually outputs the peak time which is the time at which the magnitude is maximum. (S126, S127).

[Modification 1]
FIG. 18 shows a configuration example of a feedback device of the first modification of the sixth embodiment, and FIG. 19 shows a processing flow example of the feedback device of the first modification of the sixth embodiment. The feedback device 106 includes at least an exercise information acquisition unit 110, a hit-added object exercise information acquisition unit 115, and a fourth feedback unit 135. The fourth feedback unit is a time lag between the time-dependent change in the size of the rotational movement and the translational movement of the body relative to the ball release time and the time-dependent change in the size of the movement of the impacting material. Perceptually output (S135). By this, it is possible not only to grasp how much the peak time of the size of the rotational movement or translational movement of the body and the peak time of the change every time of the size of the movement of the impacting material is deviated It becomes possible to grasp where the factor of (in which time movement has occurred).

  The feedback device 106 may also include a third feedback unit 125, and may further include components other than the motion information acquisition unit 110 of any one of the feedback devices 100, 101, 102, 103, and 104 of the first to fifth embodiments. .

[Program, recording medium]
The various processes described above may be performed not only in chronological order according to the description, but also in parallel or individually depending on the processing capability of the apparatus that executes the process or the necessity. It goes without saying that other modifications can be made as appropriate without departing from the spirit of the present invention.

  Further, when the above configuration is realized by a computer, the processing content of the function that each device should have is described by a program. The above processing function is realized on the computer by executing this program on the computer.

  The program describing the processing content can be recorded in a computer readable recording medium. As the computer readable recording medium, any medium such as a magnetic recording device, an optical disc, a magneto-optical recording medium, a semiconductor memory, etc. may be used.

  Further, this program is distributed, for example, by selling, transferring, lending, etc. a portable recording medium such as a DVD, a CD-ROM or the like in which the program is recorded. Furthermore, this program may be stored in a storage device of a server computer, and the program may be distributed by transferring the program from the server computer to another computer via a network.

  For example, a computer that executes such a program first temporarily stores a program recorded on a portable recording medium or a program transferred from a server computer in its own storage device. Then, at the time of execution of the process, the computer reads the program stored in its own recording medium and executes the process according to the read program. Further, as another execution form of this program, the computer may read the program directly from the portable recording medium and execute processing according to the program, and further, the program is transferred from the server computer to this computer Each time, processing according to the received program may be executed sequentially. In addition, a configuration in which the above-described processing is executed by a so-called ASP (Application Service Provider) type service that realizes processing functions only by executing instructions and acquiring results from the server computer without transferring the program to the computer It may be Note that the program in the present embodiment includes information provided for processing by a computer that conforms to the program (such as data that is not a direct command to the computer but has a property that defines the processing of the computer).

  Further, in this embodiment, although the present apparatus is configured by executing a predetermined program on a computer, at least a part of the processing contents may be realized as hardware.

100, 101, 102, 103, 104, 105, 106 feedback device 110 motion information acquisition unit 115 impact-added object motion information acquisition unit 120 first feedback unit 125 third feedback unit 130 second feedback unit 135 fourth feedback unit 140 switching Unit 160 Impact detection unit 170 Impact feedback unit 180 Information presentation unit 190 Recording unit 920 External device

Claims (9)

An exercise information acquisition unit for acquiring time-series information of rotational movement of the subject's body;
A feedback unit that detects a peak time that is a time at which the magnitude of the rotational movement is maximum, and perceptually outputs the peak time. An exercise information acquisition unit for acquiring time-series information of rotational movement of the subject's body;
A feedback unit for perceptually outputting time-series information of the rotational movement. An exercise information acquisition unit for acquiring time-series information of rotational movement of the subject's body;
A first feedback unit that detects a peak time that is a time at which the magnitude of the rotational movement is maximum, and perceptually outputs the peak time;
A second feedback unit for perceptually outputting time-series information of the rotational motion;
A switching unit configured to select and output one of an output of the first feedback unit and an output of the second feedback unit. The feedback device according to any one of claims 1 to 3, wherein
An impact detection unit that detects an impact time that is a time when an impacting thing and an impacting thing are in contact;
A feedback device comprising: an impact feedback unit that perceptually outputs the impact time. The feedback device according to claim 4, wherein
An information presenting unit that presents an image of an exercise environment to a subject
The recording unit further includes a sample of peak time and impact time corresponding to the image related to the exercise environment, or a recording unit recording time series information of the rotational movement corresponding to the image related to the exercise environment and the sample of the impact time
The information presenting unit perceptually outputs the information of the sample together with the image about the exercise environment. The feedback device according to any one of claims 1 to 5, wherein
An impact imparting movement information acquisition unit that acquires time-series information of an exercise of an impact imparting substance;
A feedback device comprising: a third feedback unit configured to detect a second peak time which is a time at which the magnitude of the motion of the impact imparting substance is maximized, and to perceptually output the second peak time. An exercise information acquisition unit for acquiring time-series information of rotational movement of the subject's body;
An impact imparting movement information acquisition unit that acquires time-series information of an exercise of an impact imparting substance;
A feedback device, comprising: a fourth feedback unit that perceptually outputs a time difference between time series information of motion of the impact imparting substance and time series information of the rotational motion. An exercise information acquisition step of acquiring time-series information of rotational movement of the subject's body;
A first feedback step for detecting a peak time which is a time at which the magnitude of the rotational movement is maximum, and perceptually outputting the peak time, or a second feedback step for perceptually outputting time-series information of the rotational movement Feedback step,
How to do feedback.   The feedback program for functioning a computer as a feedback apparatus in any one of Claims 1-7.

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