JP2021168921A - Shoes with sensor - Google Patents

Abstract

To provide a velocity measuring apparatus capable of being attached to a human being who moves an object etc for competition to easily measure the initial velocity of the object, and a velocity measuring method using the same.SOLUTION: Shoes with a sensor include: an antenna that emits waves of prescribed frequency to an object for measuring the velocity and receives a reflection waves of the waves from the object; a Doppler sensor for detecting a Doppler signal from the reflection waves and outputting the Doppler signal, and wearable means 3 of the antenna to the human being, in which the shoes with a sensor emit the wave to the object and detect the Doppler signal by receiving the reflection waves when the object leaves from the body part of the human being that comes in contact with the object or an object intervening between the human being and the object.SELECTED DRAWING: Figure 3

Description

The present invention relates to a speed measuring device for human wearing that measures a speed after a change of the object when a force is applied to the object by utilizing the force of the body to change the speed of the object, and a speed measuring method using the same. ..

Conventionally, in various sports such as baseball, golf, and tennis, a device using a Doppler sensor is known as a device for measuring the moving speed of the ball. The microwave Doppler sensor radiates microwaves to a moving object to be measured and measures the reflected waves from that object. Since the frequency of the reflected wave changes according to the moving speed of the object due to the Doppler effect, the difference in the frequency of the reflected wave with respect to the radiated wave is detected, and the speed of the object is derived from the signal having the frequency of the difference, that is, the Doppler signal. It is a thing. An ultrasonic Doppler sensor using ultrasonic waves can also be used depending on conditions such as speed and measurement environment.

The speed measuring device described in Patent Document 1 is a speed measuring device having a display means using a microwave Doppler sensor. This device is installed at a location away from humans to measure moving objects, and by switching the processing means that generates display information for multiple different sports such as baseball and golf, the initial velocity of the ball. , Final speed, baseball bat, golf club swing speed, and other measurement modes can be selected.

The device described in Patent Document 2 enables the device to be installed near an object to be measured, and realizes a device using a small microwave Doppler sensor at low cost. Specifically, a device that can be attached to the glove or wrist of the catcher of the ball to be measured is described.

On the other hand, in bowling competition, as described in Patent Document 3, a device that detects the speed of a ball passing between two sensors installed next to a lane based on the time it takes for the ball to pass and the distance between the sensors is known. ing.

Japanese Unexamined Patent Publication No. 2011-152291 Japanese Patent No. 3237857 Japanese Unexamined Patent Publication No. 10-21314

Since the speed measuring device described in Patent Document 1 is installed at a certain distance from a measurement target such as a ball, a certain amount of microwave power is required for measurement, and therefore the device is downsized and low in cost. There is a limit to the conversion. On the other hand, when a human uses a speed measuring device for training, it is important to always know the speed of the ball or the like at a fixed position from the body. For example, in the case of pitching or throwing competition, the speed at which the ball or the like separates from the body is usually the maximum, and it is important to grasp the speed, that is, the initial speed. When the speed measuring device is arranged independently of the human as in Patent Document 1, the standing position of the human and the position of the body part touching the ball are not always constant. The relative positional relationship of is not constant.

The speed measuring device described in Patent Document 2 is a small device that can be worn by a human, and the human is a person who receives a pitch. Therefore, since the position of the Doppler sensor is far from the pitcher, it is difficult to measure the velocity of the ball near the pitcher's body as in the above-mentioned initial velocity.

In particular, in the case of bowling, in order to improve the pitching technique, it is effective to grasp the initial velocity of the ball and stabilize it, or to find an initial velocity suitable for oneself. However, conventionally, as described in Patent Document 3, the speed of the ball during running in the lane is detected by a sensor installed next to the lane, and a means for easily measuring the initial speed of the ball at the time of release of the pitcher is There wasn't.

An object of the present invention is to solve the above-mentioned problems, for example, to use a speed measuring device for human wearing, which can be mounted on a moving human such as an object to be played and can easily measure the initial velocity of the object, and a speed measuring device for human wearing. The purpose is to provide a speed measuring method.

From the first aspect, the present invention measures the speed of an object after the change when a person applies a force to the object by using the force of the body and changes the speed of the object. A measuring device including a Doppler sensor that radiates a wave of a predetermined frequency toward the object and receives a reflected wave of the wave from the object, and detects and outputs a Doppler signal from the reflected wave. When the object is separated from a body part in contact with the object of the human or an object intervening between the human and the object, the antenna is directed toward the object. Provided is a speed measuring device for human wearing, which radiates the wave, receives the reflected wave, and detects a Doppler signal.

In the first aspect, when a human applies a force to an object by using the force of the body to change the velocity of the object, for example, when an object such as a ball is held in a hand and released. , The ball may be hit back with a limb, a bat, a racket, etc. to change the velocity vector in the opposite direction, and the velocity after the change is, for example, the velocity immediately after release or immediately after hitting. Further, when the object separates from a body part in contact with the object or an object intervening between the objects, for example, immediately before the object separates, at the moment when the object separates, or immediately after the object separates.

For example, in the case of bowling in which a ball with a small repulsive force is held and thrown, the speed immediately before or at the moment when the ball leaves the hand, and in the case of throwing a baseball or handball, the speed at the moment when the ball leaves or immediately after leaving the hand, Use a ball with a large repulsive force Use equipment as an intervening object between the body and competition such as volleyball and soccer In the case of baseball and golf batting, tennis, table tennis, etc., the ball is a limb, bat, golf club, etc. The maximum speed is the speed immediately after leaving the racket, etc., and this can be measured.

The velocity of the object to be measured in the present invention is, for example, a velocity component in the direction connecting the antenna and the object. As a means for attaching the antenna to a human, for example, the antenna itself may be directly attached to the human, but indirectly through an object such as clothing, a hat, or shoes that the human attaches to the antenna. It may be configured to be worn on a human. That is, the "mounting" in the present application may be, for example, a configuration in which it is directly mounted, or may be a configuration in which it is indirectly mounted with some object interposed therebetween. In particular, it is preferable that the device is mounted so as to move integrally with the movement. For example, the human wearing configuration may be a configuration in which it is directly attached to a human, or it may be a configuration in which it is indirectly attached to a human by interposing something. In particular, it is preferable that the device is mounted so as to move integrally with the movement of a human.

Further, the radiation of the wave from the antenna may be continuous from the start to the end of the movement of the object. It is advisable to configure the wave to be radiated.
In the present invention from the first aspect, for example, the antenna of the Doppler sensor is installed near a measurement object such as a ball to reduce the power consumption, so that the device is miniaturized and mounted on the human body as a reference position. By doing so, the initial velocity of the object can be easily measured.

In the Doppler sensor used in the present invention, the part to be attached to a human may be only the antenna or only the antenna and the amplifier part, but if the entire Doppler sensor is small and lightweight, the entire Doppler sensor can be attached. It is good to say. Examples of the object in the present invention include a spear-throwing spear and a disk-throwing disk in addition to a ball, and even when a human releases an object by its force in general work other than competition. Velocity can be measured and any object is targeted.

In addition, recent advances in microwave Doppler sensor technology have made the sensor device more sensitive, smaller, and less expensive. For example, by using such a microwave Doppler sensor in the present invention, the sensor device becomes more sensitive. A sensitive, compact, low-cost device is available. Further, for example, a means for storing data related to the speed of an object measured by a Doppler sensor is provided, initial speed data or the like is stored in a memory element or the like, and is compared with a video of the competition operation after a competition or training. Therefore, the technology can be improved. Further, for example, the skill of the athlete can be improved by importing the initial velocity data or the like stored in the memory element or the like after the measurement into an external personal computer or the like and performing statistical processing or analysis processing.

From the second aspect, the present invention is the means for attaching the antenna to a body part other than the body part that transmits force to the object in the human wearing speed measuring device according to the first aspect. It is characterized by that. In throwing competitions that use heavy objects such as hammer throws and shot puts, it may be possible to attach a small, lightweight speed measuring device to the arm, which is the body part that transmits force to the object. However, in many other sports, it is desirable to minimize the effect of wearing the device of the present invention on physical activity during the sport, that is, to keep it out of the way of the sport.

In the present invention according to the second aspect, the present invention has means for attaching to a body part other than the body part that transmits force to an object, for example, a head, shoulder, body part, foot part other than the arm when throwing with an arm. Therefore, the influence on the physical movement during the competition can be reduced. Further, since the antenna is attached to a body part other than the body part that transmits the force to the object, the movement of the body part when transmitting the force to the object is compared with the case where the antenna is attached to the body part that transmits the force to the object. It is possible to reduce the influence on the Doppler signal generated by the movement of the antenna due to the movement.

For example, when a human applies a force to an object by using the force of the body in the first viewpoint, a configuration in which the force of many parts of the body is comprehensively used can be adopted, but the second viewpoint. In the above, the body part that transmits force to the object is, for example, a part of the body that has a body part that is in contact with the object or a body part that holds a tool that is interposed between the body part, and for example, a hand is attached to the object. The entire arm should be used for contact or holding the device by hand, and the entire leg should be used when using the foot to change the speed.

From a third aspect, the present invention relates to the human wearing speed measuring device according to the second aspect, wherein the wearing means is a body part other than a body part that transmits a force to the object and comes into contact with the object. It is characterized in that it is a means for mounting the antenna on a body part whose position changes at a speed smaller than that of other parts when the object separates from a body part or an object intervening with the object. Since the speed measured by the Doppler effect is the relative speed between the antenna and the object, it is desirable that the mounting position of the antenna is a position where the rate of change of the position at the time of measurement is small.

From a fourth aspect, the present invention relates to the human wearing speed measuring device according to the second or third aspect, wherein the mounting means is a body part other than a body part that transmits a force to the object. It is characterized in that it is a means for attaching the antenna to a body part in which the contraction or relaxation of muscles when applying a force to an object is less than that of other parts.

In the present invention according to the fourth aspect, since it has a means for attaching to a body part having muscles or a body part having few muscles which is not used much when transmitting a force to an object, the influence on the body movement during the competition is further increased. Can be made smaller. In addition, it is possible to reduce the influence of the Doppler signal generated by the movement of the antenna position due to the contraction or relaxation of the muscle when the force is transmitted to the object.

From a fifth aspect, the present invention relates to a human wearing speed measuring device according to any one of the second to fourth aspects, wherein the wearing means is a body part other than a body part that transmits a force to the object. It is a means for attaching the antenna to a body part that transmits a force to the object or a body part that the object passes in close proximity to when the object separates from a tool held by the body part. .. Placing the antenna on a body part closer to the object to be measured is effective in reducing the power consumption and miniaturization of the device, and can more easily measure the initial velocity of the object.

From a sixth aspect, the present invention relates to a speed measuring device for human wearing according to any one of the first to fifth aspects, wherein the mounting means is between a body part in contact with the object or the object. It is a mounting means for arranging the antenna so that the direction in which the object moves when the object separates from an intervening object is included in the range of the direction in which the antenna has directivity. By matching the directivity of the antenna with the moving direction of the object, the measurement accuracy can be improved. In particular, it is preferable that the range of the direction in which the antenna has directivity is within the range of the half-value angle of power. In this way, the speed can be measured more reliably.

From a seventh aspect, the present invention is characterized in that, in the speed measuring device for human wearing according to any one of the first to sixth aspects, the object is a bowling ball. In particular, in bowling, by using the present invention according to the seventh aspect, for example, the initial velocity of the ball at the time of release of the pitcher's ball can be easily measured.

From the eighth aspect, the present invention is characterized in that, in the speed measuring device for human wearing according to the seventh aspect, the mounting means is a means for mounting the antenna on a bowling human shaft foot. In the throwing of a bowling ball, the ball usually passes by the foot that comes forward at the time of release, that is, the axial foot, specifically the left foot for a right-handed pitch and the right foot for a left-handed pitch. Therefore, the measurement accuracy is improved by attaching the entire Doppler sensor or the antenna of the Doppler sensor to the shaft foot. In addition, it does not easily interfere with the competition.

From the ninth aspect, the present invention relates to the speed measuring device for human wearing according to the eighth aspect, wherein the wearing means is a portion of the bowling human's axial leg below the knee or the bowling human's axial leg. It is a means for attaching the antenna to the shoes worn on the knees. Specifically, it is a means of attaching to knees, ankles, feet, shoes, and the like. When it is attached to shoes, it may be a means to be attached each time bowling is performed or a means to be embedded in shoes. By mounting the entire Doppler sensor or the antenna of the Doppler sensor closer to the ball passing by, it is possible to reduce the size and weight of the device and improve the measurement accuracy by reducing the power consumption of the device.

From a tenth aspect, the present invention has means for displaying the speed of the object measured by the Doppler sensor in the speed measuring device for human wearing according to any one of the first to ninth aspects. The display surface of the display means is configured to be arranged at a position visible to the human immediately after the object is separated from a body part in contact with the object or an object intervening between the display means. It is characterized by.

For example, if the antenna is installed on a body part below the human head, the antenna radiates horizontally forward, and the antenna and display means are integrated, the display surface is placed on the upper surface of the antenna. be able to. Alternatively, a display device connected to the Doppler sensor by wire or wireless communication may be provided, and the display device may be installed at a position easily visible to the human. Further, in the present invention, instead of the display means, it is also possible to provide a means for notifying the person of the speed of the object by voice.

From the eleventh aspect, the present invention is the human-mounted speed measuring device according to any one of the first to tenth aspects, wherein the Doppler sensor is a microwave Doppler sensor and emits the wave of the antenna. The surface is configured to be disposed inside the clothing worn by the human. In the case of a microwave Doppler sensor, since electromagnetic waves pass through general clothing, the antenna or the entire device may be mounted inside clothing, a hat, a supporter, or the like. However, when the speed display means of the tenth viewpoint is attached, it is preferable that only the display portion is not covered with clothes or the like in order to make it visible to humans.

From a twelfth aspect, the present invention is the human-mounted speed measuring device according to any one of the first to eleventh aspects, wherein the Doppler sensor is integrally configured in the housing and is contained in the housing. It has a battery for driving the Doppler sensor, and has a means for attaching the housing to the person.

In the present invention of the twelfth aspect, the antenna and the circuit portion constituting the Doppler sensor are integrated into, for example, one housing, and have means for mounting the housing on a human. Further, since the battery is built in the housing as the driving power source for the Doppler sensor, it is not necessary to connect the Doppler sensor to the power supply line. By downsizing the device and removing the wiring from the device, the effect on the athlete's physical movement can be minimized.

From the thirteenth aspect, the present invention uses the speed measuring device for human wearing according to any one of claims 1 to 12, and a human applies a force to an object by utilizing the force of the body. Provided is a speed measuring method for measuring the speed of an object after the change when the speed of the object is changed.

In a fourteenth aspect, the present invention provides a program for allowing a computer to function as a human wearing speed measuring device according to any one of the first to twelfth aspects.

According to the speed measuring device for human wearing of the present invention, for example, a speed measuring device for human wearing that can be mounted on a moving human such as an object to be competed and can easily measure the initial speed of the object, and a speed measuring device for human wearing that can be used. A speed measurement method is obtained.

The perspective view which shows the speed measuring apparatus for human wear which concerns on Example 1. FIG. The block block diagram which shows an example of the structure of the microwave Doppler sensor which is the main part of Example 1. FIG. FIG. 3 is a perspective view showing a state in which the speed measuring device for human wearing of Example 1 is mounted on a human ankle. The perspective view which shows the speed measuring apparatus for human wear which concerns on Example 2. FIG. FIG. 3 is a perspective view showing a speed measuring device for human wearing according to the third embodiment and showing a state of wearing the device on shoes. FIG. 5 is a perspective view showing a speed measuring device for human wearing according to the fourth embodiment and showing a state of wearing the device on shoes.

Hereinafter, the present invention will be described in more detail with reference to the examples shown in the figure. It should be noted that this does not limit the present invention.

FIG. 1 shows a speed measuring device 100 for human wearing according to the first embodiment. The human wearing speed measuring device 100 is a device that measures the speed of a ball when the human releases or hits the ball, and includes means for attaching the ball to the human ankle to release or hit the ball. There is. In particular, it is a device suitable for measuring the velocity of a ball when a bowling person releases the ball. When using it for bowling pitching, attach it to the ankle of the axial leg. When throwing baseball or softball, attach it to the ankle of the foot that steps forward, not to the foot. When measuring the speed of the ball after kicking in the circer, attach it to the ankle of the axial foot.

As shown in FIG. 1, the human-mounted speed measuring device 100 includes a sensor main body 1 configured by incorporating a microwave Doppler sensor 10 in one housing, and a means for mounting the sensor main body 1 on a human ankle. It is composed of a winding belt 3 which is.

The sensor main body 1 has a substantially rectangular parallelepiped shape, one surface of which is a mounting surface on the body, and the length in the direction protruding from the body is shorter than the length in the direction along the body. It is configured so that it does not interfere with physical movements. The wrapping belt 3 is composed of two belts having one end fixed to the sensor main body 1 and a tape-shaped fastener at the other end, and the sensor main body 1 is attached to the ankle by laminating the tape-shaped fasteners to each other. Attach to.

Further, the sensor main body 1 has a means for displaying the measured speed of the ball, and includes a display surface 4 for displaying the measured speed. The emission surface 2 of the microwave 5 is provided on the surface facing the body mounting surface, and the display surface 4 is provided on the upper side of the emission surface 2. The display surface 4 is a surface that can be visually recognized when a person wearing the human wearing speed measuring device 100 looks at the direction of the device.

FIG. 2 is a block configuration diagram showing an example of the configuration of the microwave Doppler sensor, which is the main part of this embodiment. As shown in FIG. 2, in the microwave Doppler sensor 10, the microwave generated by the microwave transmitter 12 is radiated from the antenna 11 and reaches the object to be measured, and the microwave reflected by the object to be measured is again an antenna. Received at 11. The received reflected wave is mixed with the signal generated by the microwave transmitter 12 by the mixer 13. When the object to be measured has a velocity relative to the antenna, the frequency of the reflected wave changes due to the Doppler effect, so that a signal having the difference frequency appears at the output of the mixer 13. This signal is amplified by the amplifier 14 and output.

In the case of FIG. 2, the antenna 11 is shared by transmission and reception, but transmission and reception antennas may be provided separately. As the antenna 11, a patch antenna, a horn antenna, or the like can be used. The output of the microwave Doppler sensor 10 is processed in the processing circuit in the sensor main body 1 and converted into velocity data. For example, a microwave Doppler sensor 10 having an output frequency of 24.15 GHz or the like and an output signal of the Doppler sensor (a signal in which one wave corresponds to a movement of 6 mm at the above frequency) are compared with a reference value, and the Doppler is compared. A comparator that outputs a pulse (a high level signal when it is above the reference value and a low level signal when it is smaller than the reference value) and a signal output from the comparator are input, and the time of one cycle of the Doppler pulse is set by the reference clock. It is preferable to include a micro controller (control unit) for measuring the speed and a display as a display means for displaying the speed by control from the micro controller.

Alternatively, instead of a comparator or equipped with a comparator, the output signal of the Doppler sensor is input to a microcontroller (control unit) to obtain the frequency of the output signal by predetermined signal processing such as FFT, thereby determining the speed. May be configured to be displayed on the display means. As the above processing circuit, the same processing circuit as the conventional one can be used. For example, the same configuration as that shown in FIG. 2 of Japanese Patent Application Laid-Open No. 2008-246139 and the structure shown in FIG. 4 of Japanese Patent Application Laid-Open No. 2010-25737 can be adopted. For example, the amplifier 14 may be provided outside the Doppler sensor.

FIG. 3 shows a state in which the human wearing speed measuring device 100 is worn on a human ankle. As shown in FIG. 3, the human wearing speed measuring device 100 is used, for example, by being mounted on the ankle of a bowling human axial foot. FIG. 3 shows a case where the ball is attached to the left foot in a right-handed pitch, and the antenna's emission surface 2 is attached so as to face forward, and the microwave 5 radiates forward, that is, in the direction in which the ball moves when the ball leaves the hand. Will be done.

In this case, the radiation period of the microwave 5 from the antenna may be continuous from the start to the end of the game, or for a certain period of time from the start of the pitching motion, or for a certain period of time from the time when the ball leaves the hand. The configuration may be set arbitrarily, such as between. In this embodiment, since the ball passes sideways in the vicinity of the left foot at the time of release, the distance between the ball and the antenna is shortened by mounting the main body 1 on the shaft foot, and the measurement accuracy is improved. In addition, such attachment to the ankle does not easily interfere with the bowling pitching motion.

Furthermore, the change in the position of the ankle when the ball leaves the hand is slower than in other parts, and the change in the position of the antenna due to the contraction or relaxation of the muscles during the pitching motion is also small, which is caused by the movement of the antenna. Less susceptible to Doppler signals.
Since the maximum value of the measured velocity is the initial velocity of the released ball, the display means may display the maximum velocity on the display surface 4. A memory element may be built in the sensor main body 1 to store speed data there, or a wireless means may be built in to transmit speed data to a display or a computer at a remote location.

In order to realize such a function, a communication interface, a memory element insertion slot, or the like may be provided in the sensor main body 1. When the display is separated, the sensor main body 1 may be attached to the inside of clothing. Although not shown, the sensor main body 1 is provided with an operation switch. In addition, a battery is built in to supply power to the microwave Doppler sensor 10 and the like.

FIG. 4 shows a speed measuring device 200 for human wearing according to the second embodiment. In this embodiment, the same members as those in the first embodiment are designated by the same reference numerals, and the overlapping description thereof will be omitted.
The human wearing speed measuring device 200 is a device that measures the speed of a ball when the human releases or hits the ball, and provides a means for attaching the ball to the knee of the human foot that releases or hits the ball. I have.
In FIG. 4, the human-mounted speed measuring device 200 includes a sensor main body 1 incorporating the same microwave Doppler sensor as in the first embodiment, and a fixed belt 6.

Also in this embodiment, the sensor main body 1 has a substantially rectangular parallelepiped shape, one surface thereof is a mounting surface on the body, and the length in the direction protruding from the body is shorter than the length in the direction along the body. It is designed so that it does not interfere with physical movements during exercise and competition. The radiation surface of the microwave 5 is attached so as to face the front of the knee. When using it for bowling pitching, attach it to the knee of the shaft leg. In the case of pitching baseball or softball, attach it to the knee of the foot that steps forward, not to the axial foot. When measuring the speed of the ball after kicking in the circer, attach it to the knee of the axial leg. The rate of change of the above-mentioned knee position at the moment when the ball leaves the hand or foot is relatively small compared to other parts, and the change of the antenna position due to the contraction or relaxation of the muscle is also small, so that it is caused by the movement of the antenna. Less susceptible to Doppler signals.

The fixing belt 6 is preferably made of a material that expands and contracts like rubber, and a knee supporter can also be used. The sensor main body 1 has a means for displaying the measured velocity of the ball, and has a surface 4 for displaying the measured velocity on the upper surface of the emission surface 2 of the microwave 5. Further, the sensor main body 1 may be mounted inside the fixed belt, and when the display surface 4 is not used, the sensor main body 1 may be mounted inside clothing.

Also in this embodiment, the speed of the ball can be measured at a position where the relative distance and direction of the pitching person to the body are always substantially constant, which can effectively contribute to the training and skill improvement of each competition.

FIG. 5 shows a state in which the human-wearing speed measuring device 300 according to the third embodiment is mounted on shoes. The human-wearing speed measuring device 300 is a device that measures the speed of a ball when the person releases or hits the ball, and provides a means for attaching the ball to the shoe worn by the person who releases or hits the ball. I have. In particular, it is a device suitable for measuring the velocity of a ball when a bowling person releases the ball. When using it for bowling pitching, attach it to the shoes worn on the shaft legs. In the case of pitching baseball or softball, wear it on the shoes worn on the foot that steps forward, not on the shaft foot. When measuring the speed of the ball after kicking in the circer, attach it to the shoes worn on the shaft legs.

As shown in FIG. 5, the speed measuring device 300 for human wearing includes a sensor main body 20 having a built-in microwave Doppler sensor and a means for mounting on shoes 26 (not shown). The sensor main body 20 has a substantially rectangular parallelepiped shape, and one surface thereof is a mounting surface for shoes, and the shape is configured so as not to interfere with the above-mentioned exercise or physical movement in competition. The radiation surface 2 of the microwave 5 is attached so as to face the front of the shoe 26 for use.
Further, the sensor main body 20 has a means for displaying the measured velocity of the ball, and has a surface 24 for displaying the measured velocity on the upper surface of the emission surface 22 of the microwave 5. An operation switch is provided in the sensor main body 20, and a battery is built in to supply power to the microwave Doppler sensor and the like.

As the means for attaching to the shoe 26 in this embodiment, for example, the sensor main body 20 is attached to the back surface of the sensor main body 20 and the attachment portion of the shoe 26 by providing a tape-shaped fastener that can be peeled off. It is possible to provide a hook on the back side of the device and hook it on the shoe string to attach it, or to fix it to the shoe with a rubber belt or the like.

Also in this embodiment, the speed of change in the position of the shoe on which the device 300 is attached at the moment when the ball separates from the hand or foot is small, and the influence of muscle contraction or relaxation in the pitching motion is small, so that the antenna It is not easily affected by the Doppler signal generated by the movement of the antenna. For example, in the case of bowling, the ball passes sideways in close proximity to the shoe worn on the foot at the time of release, so by attaching the sensor body 20 to the shoe, the distance between the ball and the antenna becomes closer, and the measurement accuracy is improved. improves.

FIG. 6 shows a state in which the human-wearing speed measuring device 400 according to the fourth embodiment is mounted on shoes. Similar to the third embodiment, the human-mounted speed measuring device 400 is a device that measures the speed of the ball when the human releases or hits the ball, and is worn by the human who releases or hits the ball. It is equipped with a means of attaching to shoes. In particular, it is a device suitable for measuring the velocity of a ball when a bowling person releases the ball. The feet to be worn in each competition are the same as in the third embodiment.

As shown in FIG. 6, in the speed measuring device 400 for human wearing, a sensor main body 30 having a built-in microwave Doppler sensor is integrated and embedded in shoes. The radiation surface 2 of the microwave 5 is fixed so as to face the front of the shoe.
Further, the sensor main body 30 has a means for displaying the measured velocity of the ball, and has a surface 34 for displaying the measured velocity on the upper surface of the emission surface 32 of the microwave 5. An operation switch is provided in the sensor main body 30, and a battery is built in to supply power to the microwave Doppler sensor and the like.

In this embodiment, since the sensor main body 30 is integrated and embedded in the shoe, it is possible to save the trouble of mounting when using this device, and it is excellent in fixing strength and stability as a mounting means. In addition, the same effect as in Example 3 can be obtained.

1, 20, 30 Sensor body 2 Emission surface 3 Winding belt 4, 24, 34 Display surface 5 Microwave 6 Fixed belt 10 Microwave Doppler sensor 11 Antenna 12 Microwave transmitter 13 Mixer 14 Amplifier 26 Shoes 100, 200, 300 Human wearing speed measuring device

Claims (4)

Shoes and
A Doppler sensor provided on the shoe that radiates a wave of a predetermined frequency to an object at a position away from the shoe, receives the reflected wave of the wave from the object, and outputs a signal corresponding to the received reflected wave. With the sensor body
A shoe with a sensor that measures based on the signal. The sensor body is
The shoe with a sensor according to claim 1, wherein the direction in which the wave passes through the position of the toe of the shoe is the radiation direction of the wave. The sensor body is
The shoe with a sensor according to claim 1 or 2, which is provided so as to be located on the instep of the person who wears the shoe. The sensor according to any one of claims 1 to 3, which has a display surface provided on the sensor main body so as to face upward, and includes a display means for displaying the measurement result on the display surface. shoes.

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