JP6508820B2 - Motion measuring device - Google Patents

Description

  The present invention relates to a motion measurement apparatus that measures motion data by attaching a detection unit that detects motion of a foot to an ankle.

  A sensor attached to an ankle is used as a motion measurement device that detects motion of a foot by a sensor and measures motion data. In Patent Document 1, there is provided a measurement device in which a measurement unit for measuring a person's motion and movement and a display unit for displaying a measurement result are separately provided, and the measurement unit is mounted near the Achilles tendon of the person's ankle. Have been described. The measurement unit is provided with a pressure sensor, and the measurement unit is attached to the ankle by winding a band or a tape around the ankle. The expansion and contraction of the Achilles tendon is detected by the pressure sensor, and the pressure data is recorded. Based on the pressure data, a state in which a person is sleeping or standing is identified.

JP, 2006-305311, A

  The one described in Patent Document 1 has a problem that the band or the tape itself tends to rotate or shift due to walking motion or vibration and the normal data can not be measured because the sensor is attached using the band or the tape. is there.

  In order to prevent rotation and slippage, it is necessary to tighten the ankle tightly with a band or tape, but if it is tightened, muscles (such as tibialis anterior muscle), Achilles tendon, arteries, etc. will be tightened excessively. Not only does the wearing feel worse, it also causes problems in normal walking.

  The present invention is intended to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a motion measuring device capable of preventing rotation and shifting without tightening an ankle, and measuring motion data with high accuracy while enhancing wearing feeling. And

The present invention relates to a motion measurement device for detecting the motion of a foot,
A band-shaped main body portion attached to the ankle is provided, and a detection portion for detecting the movement of the foot is housed inside the band-shaped main body,
The belt-like main body portion is characterized in that a support portion supported by at least one of the inner and outer heels of the ankle, and a rotation prevention portion provided across the Achilles tendon are formed. is there.

  In the exercise measuring device according to the present invention, preferably, the detents are formed continuously in accordance with the outer shape of the Achilles tendon.

  The motion measurement device of the present invention may be configured such that an elastic member is provided inside the band-shaped main body, and the band-shaped main body clamps the inside and the outside of the ankle by the elastic force of the elastic member.

  In the motion measurement device of the present invention, the cross-sectional shape of the inner surface of the band-like main body can be a shape that gradually spreads upward or downward of the foot.

  In the motion measuring device according to the present invention, preferably, the band-like main body has a length that surrounds the ankle at 360 degrees or more.

In this case, it is preferable that a gap or an open portion be formed between the portion of the inner surface of the band-like main body facing the detent portion and the front portion of the ankle.

  In the exercise measuring device according to the present invention, the band-shaped body is supported at at least two points of the Achilles tendon and the heel, and the detents formed on the inner surface of the band-shaped body pinch the Achilles tendon from the left and right This becomes difficult, and the detection unit provided on the band-shaped main body can operate integrally with the ankle. Therefore, it is possible to detect the motion of the ankle with high accuracy in various exercise operations such as walking or running.

  In addition, since the position does not shift even if it is not tightened and held at the ankle, compression on the muscle can be suppressed, and movement of the ankle in the same state as the non-wearing state can be suppressed without affecting walking operation. It can be detected accurately.

  In addition, since the entire ankle is not tightened like a band or a tape, it is possible to eliminate discomfort when worn.

It is the side view which looked at the state where the exercise measuring device for the right foot concerning a 1st embodiment of the present invention was equipped to the right foot from the inner side of the right foot. It is the longitudinal cross-sectional view which looked at the state in which the exercise | movement measurement apparatus shown in FIG. 1 was mounted | worn with the right leg from the front of the right foot. It is a top view which shows the whole structure of the exercise | movement measuring apparatus for right feet shown in FIG. It is the plane sectional view which looked at the state where the movement measuring device for the right foot shown in Drawing 1 was equipped to the right foot from the upper part of the right foot. It is a block diagram showing a schematic structure of a control device which controls a movement measuring device concerning an embodiment of the invention. It is a top view showing movement measurement equipment for a right foot and a left foot concerning an embodiment of the invention. It is a longitudinal cross-sectional view which shows the state by which the motion measurement apparatus for right feet and left foot shown in FIG. 6 was each mounted | worn with the right foot and the left foot. It is a top view which shows the exercise | movement measuring apparatus for the right feet which concern on the 2nd Embodiment of this invention. It is a top view which shows the exercise | movement measuring apparatus for right feet which concern on the 3rd Embodiment of this invention. It is a cross-sectional view which shows the state which mounted | wore the right foot with the exercise | movement measurement apparatus shown in FIG.

  Hereinafter, a motion measurement device according to an embodiment of the present invention will be described in detail with reference to the drawings. The motion measurement device measures a motion data by attaching a sensor for detecting the motion of a foot to an ankle.

  A motion measurement apparatus 10 according to a first embodiment of the present invention is shown in FIGS. 1 to 4. The motion measurement device 10 shown in FIGS. 1 to 4 is used by being detachably attached to the ankle 2 of the right foot 1. The movement measuring device 10 includes a band-shaped main body 11 attached to the ankle 2. The band-like main body 11 is attached to the upper part of the inner (inner) 4 a and outer (outer) 5 a of the ankle 2. As shown in FIGS. 3 and 4, a detection unit 20 including a sensor for detecting the motion of a foot inside a cross section of the belt-like main body 11, and a vibration generation unit 30 which is a stimulation applying unit that stimulates the foot. A battery 50 for driving each part and a control device 60 for controlling each part are housed. A light emitting unit 40 is provided on the outer side of the belt-shaped main body 11 in the diagonally forward direction.

  As shown in FIG. 3, in the free state, the strip-shaped main body 11 is shaped so as to go around at an angle of 360 degrees or more so that one end 13 a and the other end 13 b overlap. As shown in FIG. 4, the band-shaped main body 11 is attached so as to surround the ankle 2 at 360 degrees or more.

  The belt-shaped main body 11 is made of a flexible material made of a synthetic resin such as polyurethane or silicon or an elastomer such as fluororubber, and an elastic member 14 formed of a metal plate spring material is embedded therein to be in a free state. Thus, the orbiting shape shown in FIG. 3 can be maintained.

  As shown in FIG. 3, in the rear of the inner surface 12 of the strip-shaped main body 11, a recess 15 is formed to sandwich the Achilles tendon 3. The protruding portions 15a and 15b protruding in the center direction are formed on both sides of the portion where the recessed portion 15 is formed, and this portion is formed thicker in the inward and outward direction than the other portions of the strip-shaped main body 11 It is done. As a result, the recess 15 can be formed deep, and the inner surface 15 c of the recess 15 can be formed into a concave surface. In this embodiment, the protuberances 15a and 15b constitute a detent.

  An inner support 16 a and an outer support 16 b are formed on the left and right sides of the inner surface 12 of the strip-shaped main body 11. The elastic member 14 exerts an elastic force mainly in a direction in which the inner support portion 16a and the outer support portion 16b are brought close to each other.

  The band-shaped main body 11 is spread so as to separate the end 13a and the end 13b from each other, and is mounted on the upper part of the ankle 2 as shown in FIGS. 2 and 4. When the belt-like main body 11 inserts the Achilles tendon 3 into the recess 15 and mounts it so as to surround the ankle 2, the elastic force of the elastic member 14 causes the inner support portion 16a to be a part of the inner collar 4a, specifically, the inner side of the ankle 2. The outer supporting portion 16b comes to a little strong against the bone (the tibia including the inner collar 4a) 4 and the outer supporting portion 16b slightly against the outer bone 5 (the calcaneus including the outer shell 5a) 5 in detail.

  In the belt-like main body 11, the Achilles tendon 3 deepens and enters the concave surface-shaped concave portion 15, and the inner support portion 16a and the outer support portion 16b form the inner collar 4a (inner bone 4) and outer collar 5a (outer bone 5). Since the belt-like main body 11 is easily fitted to the ankle 2 because it is mounted so as to be pinched, it is difficult to be displaced in the rotational direction, and it becomes easy to follow the movement of the ankle 2. Since it can be supported by heel and supported on bone, it is not affected by muscle hypertrophy and blood vessel pulsation during exercise, so that the movement of the body can be accurately detected, and there is no risk of false detection of movement.

  As shown in FIG. 2, the lower portion 12 a of the inner surface 12 of the strip-shaped main body 11 is formed in a tapered shape such that the diameter is expanded downward. As a result, the inner surface 12 of the band-shaped main body 11 fits the protrusions of the inner collar 4 a and the outer collar 5 a of the ankle 2, so that the band-shaped main body 11 is attached to the ankle 2 in a position-displaced state.

  The band-shaped main body 11 may be attached to the lower part of the inner collar 4 a and the outer collar 5 a of the ankle 2. In this case, by forming the upper portion 12b of the inner surface 12 of the strip-shaped main body 11 in a tapered shape in which the diameter is expanded toward the upper end, the upper portion 12b can be fitted to the protrusions of the inner and outer ribs 4a and 5a.

  In the belt-like body 11, the inner support portion 16a and the outer support portion 16b receive elastic force and abut against the ankle 2 slightly, and in this support portion, the inner bone 4 and the outer bone 5 whose surface is relatively hard. As a result, the belt-like main body 11 is less likely to be misaligned, and it is difficult to feel a sense of oppression at the time of wearing.

  As shown in FIG. 4, a muscle (anterior tibial muscle 6) exists in front of the ankle 2, but in this part, a gap 17 is formed between the inner surface 12 of the strip-like main body 11 and the ankle 2 . The band-shaped body 11 is mounted so as to be integral with the ankle 2 so as to surround the circumference of the ankle 2 within a range of 360 degrees or more, but a gap 17 is formed between the inner surface 12 and the muscle (tibialis anterior muscle 6) Since the ankle 2 is moved for walking, running, or performing various exercises, the muscles (the anterior tibial muscle 6) are not compressed and the wearing feeling is improved.

  In addition, the open part which a strip | belt-shaped main body interrupts instead of the said clearance gap 17 may be formed. By providing a gap 17 or an open part at the opposite position of the anterior tibial muscle 6, the anterior tibial muscle by the band-like body is not compressed at the time of operation, and the same operation as at the time of non-wearing can be performed. Do.

  In this structure, the ankle 2 and the band-shaped main body 11 can be integrated without tightening the entire ankle 2 using a band or tape as in the conventional case, and the band-shaped main body 11 follows the movement of the ankle 2 Also, it is possible to eliminate discomfort when wearing.

Next, a configuration for measuring motion data with such a motion measurement device 10 will be described.
As shown in FIG. 4, the detection unit 20 embedded inside the strip-shaped main body 11 is provided with an azimuth sensor 21, an acceleration sensor 22, and a circuit board that supports these sensors. The number of sensors provided in the detection unit 20 may be one, or three or more. For example, in addition to the orientation sensor 21 and the acceleration sensor 22, an angular velocity sensor such as a vibrating gyro is used It can also be done.

  The orientation sensor 21 is configured of a magnetic gyro sensor that detects geomagnetism. The magnetic gyro sensor includes a magnetic detection element disposed on three-axis orthogonal coordinates, thereby specifying which of the three axes it is rotating about when the ankle 2 is operated. The angular velocity at that time can also be detected. Furthermore, the absolute orientation of the ankle 2 can also be detected.

  The acceleration sensor 22 has a predetermined mass and a support member, and the amount of deformation of the support member due to the force acting on the mass is detected. By providing the acceleration sensor 22, it is possible to detect the posture of the ankle 2 with respect to the direction of gravity, and to detect an impact that the foot 1 receives during walking, running or other exercise. For example, it is possible to detect an exercise state of walking or running or a landing state of the foot 1 itself.

  The vibration generating unit 30 embedded in the strip-shaped main body 11 is configured of, for example, a vibrator utilizing an electromagnetic force exerted by a magnetic field of a magnet and a current flowing through a coil, or a vibrator utilizing strain deformation such as a piezoelectric element. . By attaching such a vibration generating unit 30 to the ankle 2, for example, when the movement or posture of the foot 1 is bad, the ankle 2 can be directly vibrated and taught. The stimulus applying unit is not limited to the vibration generating unit 30. For example, a shock wave or an intermittent pressure may be applied to the ankle 2 using an electromagnetic drive mechanism or a piezoelectric element.

  The light emitting unit 40 provided on the outer side of the diagonally front of the strip-shaped main body 11 includes a plurality of light emitting elements 41 configured by LEDs (Light Emitting Diodes). By attaching the light emitting unit 40 to the ankle 2, for example, when the movement or the posture of the foot 1 is bad, the light emitting element 41 can be used to teach by light. In this case, different teaching can be identified by changing the color of the plurality of light emitting elements 41 or changing the method of blinking. Further, gradation can be taught by controlling the light emission of the light emitting element 41. Further, by providing the band-like body 11 with a voice teaching element not shown, when the movement or posture of the foot 1 is bad, it can be taught using the voice teaching element.

  In this embodiment, a sandwiching member is constituted by both the vibration generating unit 30 and the light emitting unit 40. The holding member provides the wearer with information about an abnormality in the exercise state, and information for correcting walking and running posture.

  The battery 50 provided inside the strip-shaped main body 11 is configured by a secondary battery that can be repeatedly used by charging. The battery 50 supplies power to each unit such as the detection unit 20, the vibration generation unit 30, and the light emission unit 40.

  As shown in FIG. 5, the direction sensor 21 and the acceleration sensor 22 of the detection unit 20, the vibration generating unit 30, and the light emitting element 41 of the light emitting unit 40 are connected to the control device 60 of the movement measuring device 10.

  The control device 60 embedded in the strip-shaped main body 11 is mainly configured of a CPU (central processing unit), a memory of a ROM or a RAM, and the like. The detection output detected by the azimuth sensor 21 is detected by the detection circuit 61 and applied to the control device 60, and the detection output detected by the acceleration sensor 22 is detected by the detection circuit 62 and applied to the control device 60. Further, a control signal is supplied from the control device 60 to the driver 63 to control the vibration generating unit 30, and a control signal is supplied from the control device 60 to the driver 64 to control the light emitting element 41. In the control device 60, motion data obtained based on the detection output of the direction sensor 21 or the acceleration sensor 22 obtained according to the movement of the foot 1 is stored in the memory. The control device 60 calculates the timing to operate the vibration generating unit 30 and the light emitting element 41 based on the movement data, and teaches by the vibration, light and sound according to the movement of the foot 1.

  The control device 60 may be provided with a wireless communication unit such as Bluetooth (registered trademark) or an RF transmitter capable of wireless communication with a mobile phone or a smartphone. In this case, the control device 60 transmits the exercise data to the smartphone or the personal computer via the wireless communication unit. The timing at which the vibration generating unit 30 or the light emitting element 41 should operate is calculated by a smartphone or a personal computer, and the result is fed back to the control device 60 to control the vibration generating unit 30 or the light emitting element 41.

  The detection unit 20 is disposed to face the heel of the ankle 2 when the band-shaped main body 11 is attached to the ankle 2. In the mounting example shown in FIG. 4, the detection unit 20 is opposed to the inner ring 4 a (portion of the bone 4 inside the ankle 2). When the detection unit 20 is disposed in the bone portion of the ankle 2, the detection of the movement of the ankle 2 muscle (anterior tibial muscle 6) and arteries is less likely to occur. It becomes easy to always maintain the relative position of 20 and the ankle 2 properly, and it becomes possible to always acquire accurate motion data.

  In the motion measuring device 10 shown in FIG. 4, the vibration generating unit 30 and the battery 50 are also disposed in a portion facing the inner ring 4 a (the inner bone 4 of the ankle 2). By causing the vibration generating unit 30 to face the bone 4, the vibration can be easily transmitted to the ankle 2 without being affected by the vibration of a muscle or an artery. In addition, the detection unit 20, the vibration generation unit 30, the battery 50, and the control device 60 are concentrated at one location so as to face the inner heel 4 a of the ankle 2, and these masses are received by the inner heel 4 a of the ankle 2. Even if the exercise measurement apparatus 10 is attached, walking and exercise can be performed without discomfort.

  The exercise measuring apparatus 10 can be used by being attached to one foot such as the right foot, for example, but as shown in FIG. 6, the exercise measuring apparatus 10A is attached to the right foot 1A and the exercise measuring apparatus 10B is attached to the left foot 1B. You can also

  The motion measuring device 10A for the right foot is the same as the motion measuring device 10 of the above-described embodiment, and the motion measuring device 10B for the left foot is configured symmetrically with the motion measuring device 10A for the right foot. FIG. 7 shows a state in which the movement measuring devices 10A and 10B are attached to the right foot 1A and the left foot 1B. By attaching the motion measuring devices 10A and 10B to the right foot 1A and the left foot 1B, respectively, it is possible to acquire motion data separately for the motion state of the right foot 1A and the left foot 1B, and vibrate separately for the right foot 1A and the left foot 1B. And can be taught by light.

  The motion measuring devices do not necessarily have to be separate structures for the right foot and the left foot. For example, by making the shape of the inner surface 12 of the strip-like main body 11 vertically symmetrical, one kind of motion measuring device 10 is the right foot 1A. And can be attached to either of the left foot 1B. In this case, when the motion measurement device 10 is mounted on the left foot 1B, the motion measurement device 10 is mounted upside down with respect to the time of the right foot 1A.

The motion measuring device of another embodiment is shown in FIG.
The motion measurement apparatus 110 according to the second embodiment of the present invention shown in FIG. 8 is such that when the open end 13c and the open end 13d of the strip-like main body 11 are separated, as shown in FIG. In addition, although it is attached to the rear portion and the inner and outer side portions of the ankle 2, the front portion is not covered.

  The band-shaped main body 11 is attached to the ankle 2 in a state in which the inner support portion 16a and the outer support portion 16b sandwich the inner collar 4a and the outer collar 5a in a state where the Achilles tendon 3 enters the recess 15. Since the band-shaped main body 11 is firmly fixed to the ankle 2, even if the open end 13c and the open end 13d are separated, it is hard to remove from the ankle 2. Also, by moving the ankle 2 to walk, run, or perform various exercises by causing the gap between the open end 13c and the open end 13d to face the muscle (anterior tibial muscle 6) in front of the ankle 2 , The muscles (tibialis anterior muscle 6) are not compressed, and the wearing feeling is improved.

FIG. 9 shows a motion measurement device 210 according to a third embodiment of the present invention.
In the motion measuring device 210, when the belt-like main body 11 is attached to the right foot 1A, the detection unit 20 faces the outer heel 5a of the right foot, and the vibration generating unit 30, the battery 50, and the control device 60 face the inner heel 4a. Is located in As described above, the respective devices may be disposed in a dispersed manner in the band-shaped main body 11, but since many vibration senses (receptors for detecting vibrations) are distributed in the bones of the foot, either may be the inner ridge 4a or It is preferable to arrange | position in the part which opposes the mantle 5a.

  By causing the detection unit 20 to face the heel, the motion of the ankle can be directly detected, and by causing the vibration generating unit 30 to face the heel, it is easy to give vibration to the bone of the foot.

  The motion measuring device of the present invention is used in the field of kinematics to detect the direction and posture of a foot during motion and to teach the motion person by vibration and light so as to be an ideal motion state. Ru.

  Moreover, in the medical field, it can be used for exercise measurement at the time of rehabilitation of lower limbs disabled.

1 foot (right foot)
1A right foot 1B left foot 2 ankle 3 Achilles tendon 4 inner bone 4a inner bone 5 outer bone 5a mantle 6 anterior tibia muscle 10 exercise measurement device 10A exercise measurement device for right foot 10B exercise measurement device for left foot 11 strip main body 14 elastic member 15 recess 15a, 15b raised part (rotation stopping part)
15c Concave part 16a Inner support part 16b Outer support part 17 Clearance 20 Detection part 21 Orientation sensor 22 Acceleration sensor 30 Vibration generation part 40 Light emission part 41 Light emitting element 50 Battery 60 Control device 61, 62 Detection circuit 63, 64 driver

Claims (6)

In the motion measuring device for detecting the motion of the foot,
A band-shaped main body portion attached to the ankle is provided, and a detection portion for detecting the movement of the foot is housed inside the band-shaped main body,
A support portion supported by at least one of the inner and outer heels of the ankle;
A movement measuring device characterized in that a detent portion provided on both sides of an Achilles tendon is formed.   The motion measuring device according to claim 1, wherein the detent portion is continuously formed following the outer shape of the Achilles tendon.   The movement measuring device according to claim 1 or 2, wherein an elastic member is provided inside the band-like body, and the band-like body sandwiches the inside and the outside of the ankle by the elastic force of the elastic member.   The motion measuring device according to any one of claims 1 to 3, wherein a cross-sectional shape of the inner surface of the band-like main body is a shape which gradually spreads upward or downward of a foot.   The motion measuring apparatus according to any one of claims 1 to 4, wherein the band-like body has a length surrounding the ankle at 360 degrees or more. The motion measurement device according to claim 5, wherein a gap or an opening is formed between a portion of the inner surface of the band-like main body facing the detent portion and the front of the ankle.

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