JP2016190041A - Velocity measuring device worn by person and velocity measuring method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a velocity measuring device worn by a person that can be worn by a person who moves an object to be a competition object or the like, and can measure an initial velocity of the object easily, and a velocity measuring method using the device.SOLUTION: A device includes an antenna for emitting a wave of a prescribed frequency to an object whose velocity is measured and receiving a reflection wave of the wave from the object, and has a Doppler sensor for detecting and outputting a Doppler signal from the reflection wave, and wearing means 3 by which the antenna is worn on a person. When the object is separated from a body part of the person that contacts the object, or from a thing intervening between the person and the object, the device emits the wave toward the object, receives the reflection wave and detects the Doppler signal.SELECTED DRAWING: Figure 3

Description

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

  Conventionally, a device using a Doppler sensor is known as a device for measuring the moving speed of a ball in various competitions such as baseball, golf, and tennis. In the microwave Doppler sensor, a microwave is radiated to a moving object to be measured and a reflected wave from the object is measured. Since the frequency of the reflected wave changes according to the moving speed of the object due to the Doppler effect, the difference in frequency of the reflected wave with respect to the radiated wave is detected, and the velocity of the object is derived from the signal having the difference frequency, that is, the Doppler signal. Is. 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 display means using a microwave Doppler sensor. This device is installed at a place away from a human and measures a moving object. By switching processing means for generating display information for a plurality of different games such as baseball and golf, the initial velocity of the ball Measurement modes such as the final speed, baseball bat, and golf club swing speed can be selected.

  The apparatus described in Patent Document 2 realizes an apparatus using a small-sized microwave Doppler sensor at a low cost by enabling the apparatus to be installed near an object to be measured. Specifically, a device that can be mounted on the glove or wrist of a ball catcher of a ball to be measured is described.

  On the other hand, in a bowling competition, as described in Patent Document 3, there is known a device that detects the speed of a ball passing by the time that the ball passes between two sensors installed beside the lane and the distance between the sensors. ing.

JP 2011-152291 A Japanese Patent No. 3327857 JP-A-10-212314

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

  The speed measurement 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. For this reason, since the position of the Doppler sensor is away from the pitcher, it is difficult to measure the velocity of the ball near the pitcher's body like the initial velocity.

  In particular, in the case of bowling, it is effective to improve the pitching technique by grasping the initial velocity of the ball and stabilizing it, or finding an initial velocity suitable for oneself. However, conventionally, as described in Patent Document 3, the speed of the ball during the lane running is detected by a sensor installed beside the lane, and means for easily measuring the initial speed of the ball when the pitcher is released is There wasn't.

  An object of the present invention is to solve the above-mentioned problems, for example, a human-mounted speed measuring device that can be worn by a person who moves an object to be a competition and can easily measure the initial speed of the object, and the same. It is to provide a speed measurement method.

  In a first aspect, the present invention relates to a human wearing speed for measuring a speed of the object after the change when the human applies a force to the object using the force of the body and changes the speed of the object. A measuring device comprising an antenna 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; And means for attaching the antenna to the human, and when the object is separated from a body part contacting the object of the human or an object interposed between the human and the object, Provided is a speed measurement device for human wear, characterized in that it emits the wave and receives the reflected wave to detect a Doppler signal.

  In the first aspect described above, when a human applies a force to an object using the force of the body and changes the speed of the object, for example, when the object such as a ball is held in the hand and released. In some cases, the speed vector is changed in the opposite direction by hitting the ball with a limb, bat, racket, etc., and the speed after the change is, for example, the speed immediately after release or immediately after hitting. Moreover, when the said object leaves | separates from the thing which intervenes between the body part which touches an object, or an object, for example, just before leaving | separating the said object, the moment of leaving, or just after leaving | separating.

  For example, in the case of bowling that holds a ball with a small repulsive force, the speed immediately before or after the ball leaves the hand, the speed at the moment when the ball leaves the hand or immediately after it leaves in the case of pitching such as baseball or handball, Ballet and soccer that use a ball with a large repulsive force, such as baseball and golf batting, tennis, table tennis, etc. that use equipment as an object that intervenes between sports and the body, such as balls, limbs, bats, golf clubs, The speed immediately after leaving the racket or the like becomes the maximum speed and can be measured.

  Note that the velocity of the object 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 person, for example, the antenna itself may be directly attached to a person, but indirectly, through an object such as clothing, a hat, or shoes that the person wears. It is good also as a structure with which a human is mounted | worn. In other words, the “mounting” in the present application may be configured to be mounted directly, for example, or may be configured to be mounted indirectly through some object. In particular, it may be configured to be mounted in a state of moving integrally with movement. For example, the term “for human wear” may be configured to be directly worn on a human, or may be configured to be indirectly worn on a human with some object interposed therebetween. In particular, it may be configured to be mounted in a state of moving integrally with human movement.

Further, the radiation of the wave from the antenna may be continuous from the start to the end of the movement of the object.For example, when the object moves away from the body part in contact with the object or an object interposed between the objects, the direction of the object It is preferable that the wave is radiated.
In the present invention according to the first aspect, for example, the apparatus is miniaturized by installing an antenna of a Doppler sensor near a measurement object such as a ball and reducing the power consumption, and is attached to a human body serving as a reference position. By doing so, the initial speed of the object can be easily measured.

  In addition, in the Doppler sensor used in the present invention, only the antenna or the antenna and the amplifier may be attached to the person. However, if the entire Doppler sensor is small and lightweight, the entire Doppler sensor can be attached. It is good to do. As an object in the present invention, for example, there are a spear throwing spear and a disc throwing disc other than the ball, and even in a general work other than a competition, even when a human releases the object with its power, Speed can be measured and any object can be 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, higher sensitivity can be achieved. Sensitivity, small size, and low cost equipment can be obtained. In addition, for example, a means for storing data related to the speed of the object measured by the Doppler sensor is provided, and the initial speed data is stored in a memory element or the like and compared with a video of the competition operation after competition or training. Thus, the technology can be improved. In addition, for example, the initial speed data stored in a memory element or the like after measurement is taken into an external personal computer or the like, and statistical processing or analysis processing is performed, thereby improving the athlete's technique.

  In a second aspect, the present invention relates to the human-mounted speed measuring device according to the first aspect, wherein the mounting means is means for mounting the antenna on a body part other than the body part that transmits force to the object. It is characterized by that. In throwing competitions that use heavy objects such as hammer throws and cannonball throws, it seems possible to attach a small and lightweight speed measurement device to the arm, which is the body part that transmits force to the objects. However, in many other competitions, it is desirable to minimize the effect of wearing the device of the present invention on physical movements during competition, i.e., not to interfere with the competition.

  In the present invention according to the second aspect, there is a means for attaching to a body part other than the body part that transmits force to the object, for example, a head, a shoulder, a body part, a foot part, etc. other than the arm when throwing using an arm. Therefore, it is possible to reduce the influence on physical movement during competition. Furthermore, since the antenna is attached to a body part other than the body part that transmits force to the object, the movement of the body part when transmitting force to the object is compared to the case where the antenna is mounted to the body part transmitting force to the object. It is possible to make it difficult to be affected by the Doppler signal generated by the movement of the antenna.

  For example, in the first aspect, when a human applies a force to an object using the force of the body, a configuration in which the force of many parts of the body is comprehensively used can be adopted. The body part that transmits force to the object is, for example, a body part that has a body part that contacts the object or a body part that holds a tool interposed between the object, When touching or holding the tool by hand, the entire arm may be used. When the foot is used to change the speed, the entire leg may be used.

  In 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 force to the object, and contacts the object. The antenna is attached to a body part that has a speed of change of position when the object leaves from a body part or an object interposed between the body part and the object, which is smaller than other parts. Since the speed measured by the Doppler effect is a relative speed between the antenna and the object, it is desirable that the antenna mounting position be a position where the rate of change in position during measurement is small.

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

  In the present invention according to the fourth aspect, since there is a mounting means for a body part having muscles that are not often used when transmitting force to an object or a body part that does not have much muscles, the influence on the body movement during competition is further increased. Can be small. In addition, it is possible to reduce the influence of the Doppler signal caused by the movement of the antenna position due to the contraction or relaxation of the muscle when transmitting force to the object.

  In a fifth aspect, the present invention provides the 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 force to the object. The antenna is attached to a body part that transmits force to the object or a body part through which the object passes in close proximity when the object leaves the body part or a tool held by the body part. . Installing the antenna on a body part closer to the object to be measured is effective for reducing the power consumption and size of the apparatus, and more easily measuring the initial speed of the object.

  In a sixth aspect, the present invention provides the human wearing speed measuring device according to any one of the first to fifth aspects, wherein the wearing means is between the 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 moves away from the intervening object is included in the range of the direction in which the antenna has directivity. Measurement accuracy can be improved by matching the directivity of the antenna to the moving direction of the object. In particular, the range of the half-power angle may be set as the range of the direction in which the antenna has directivity. In this way, the speed can be measured more reliably.

  In a seventh aspect, the present invention is characterized in that in the human-mounted speed measurement device 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, it is possible to easily measure the initial velocity of the ball when the pitcher releases the ball.

  In an eighth aspect, the present invention provides the human wearing speed measuring apparatus according to the seventh aspect, wherein the attaching means is means for attaching the antenna to a shaft foot of a human to be bowled. When throwing a bowling ball, when the ball is released, the ball usually passes the foot that moves forward when the ball is released, that is, the axial foot, specifically, the left foot for a right-hand throw and the right foot for a left-hand throw. Therefore, the measurement accuracy is improved by attaching the whole Doppler sensor or the antenna of the Doppler sensor to the shaft foot. Also, it is difficult to interfere with the competition.

  In a ninth aspect, the present invention relates to the human wearing speed measuring apparatus according to the eighth aspect, wherein the wearing means includes a portion below the knee of the bowling human axial foot or the bowling human being the axial foot. It is means for attaching the antenna to a shoe worn on the shoe. Specifically, it is a means for attaching to a knee, an ankle, a foot, a shoe or the like. In the case of wearing on shoes, it may be a means for wearing each time bowling or a means for embedding in shoes. By mounting the entire Doppler sensor or the antenna of the Doppler sensor in a portion closer to the ball passing through the side, the apparatus can be reduced in size, weight, and measurement accuracy can be improved by reducing power consumption.

  In a tenth aspect, the present invention provides a human-mounted speed measuring device according to any one of the first to ninth aspects, the display device for displaying the speed of the object measured by the Doppler sensor, The display surface of the display means is configured to be arranged at a position where the human can visually recognize immediately after the object is separated from a body part that contacts the object or an object interposed between the object and the object. It is characterized by.

  For example, if the antenna is installed at a body part below the human head, the antenna radiation direction is horizontal front, and the antenna and display means are integrated, the display surface is placed on the top surface of the antenna. be able to. Alternatively, a display device connected to the Doppler sensor by wired or wireless communication may be provided, and the display device may be installed at a position where the human can easily see. In the present invention, it is also possible to provide means for notifying the human of the speed of the object by voice instead of the display means.

  In an eleventh aspect, the present invention relates to 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 the wave radiation of the antenna. The surface is configured to be arranged inside 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 according to the tenth aspect is mounted, it is preferable that only the display unit is not covered with the clothing or the like so that the human can visually recognize it.

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

  In the twelfth aspect of the present invention, the antenna, the circuit unit, and the like constituting the Doppler sensor are integrated in, for example, a single housing, and have means for mounting the housing on a human. In addition, since the battery is built in the housing as the drive power source for the Doppler sensor, it is not necessary to connect the Doppler sensor to the power line. By miniaturizing the device and removing the wiring from the device, the impact on the athlete's physical movements can be minimized.

  In a thirteenth aspect, the present invention provides a human wearing speed measuring device according to any one of claims 1 to 12, wherein a human applies a force to an object using the force of the body, Provided is a speed measurement method for measuring the speed of the object after the change when the speed of the object is changed.

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

  According to the human-mounted speed measuring device of the present invention, for example, a human-mounted speed measuring device that can be mounted on a human who moves an object to be a competition and can easily measure the initial speed of the object, and the same are used. A speed measurement method is obtained.

1 is a perspective view illustrating a human-mounted speed measuring device according to Embodiment 1. FIG. 1 is a block configuration diagram illustrating an example of a configuration of a microwave Doppler sensor that is a main part of Embodiment 1. FIG. The perspective view which shows a mode that the speed measurement apparatus for human wearing of Example 1 was mounted | worn to the human ankle. FIG. 6 is a perspective view showing a human-mounted speed measuring device according to Embodiment 2. FIG. 10 is a perspective view showing a human wearing speed measuring apparatus according to a third embodiment and showing how it is worn on a shoe. FIG. 9 is a perspective view showing a human wearing speed measuring apparatus according to a fourth embodiment and showing how it is worn on a shoe.

  Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the drawings. Note that the present invention is not limited thereby.

  FIG. 1 shows a human-mounted speed measuring apparatus 100 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 a means for attaching to the human ankle that releases or hits the ball. Yes. In particular, it is a suitable device for measuring the velocity of a bowling human when the ball is released. When used for bowling, it is attached to the ankle of the axle. When throwing baseball or softball, attach it to the ankle of the foot that steps forward instead of the pivot. When measuring the speed of the ball after kicking in a circuit, wear it on the ankle of the shaft foot.

  As shown in FIG. 1, a speed measurement apparatus 100 for wearing a human body includes a sensor main body 1 configured by incorporating a microwave Doppler sensor 10 in one housing, and means for mounting the sensor main body 1 on a human ankle. It is comprised from the belt 3 for winding which is.

  The sensor body 1 has a substantially rectangular parallelepiped shape. One surface of the sensor body 1 is a mounting surface to 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 not to interfere with body movement. The winding belt 3 is composed of two belts, one end of which is fixed to the sensor body 1 and the other end of which is provided with a tape-like fastener, and the sensor body 1 is attached to the ankle by bonding the tape-like fasteners together. Attach to.

  Further, the sensor main body 1 has a display 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 opposite to the attachment surface to the body, 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 in the direction of the device.

  FIG. 2 is a block configuration diagram illustrating an example of a configuration of a microwave Doppler sensor which is a main part of the present 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 measurement object, and the microwave reflected by the measurement object is again transmitted to the antenna. 11 is received. The received reflected wave is mixed by the mixer 13 with the signal generated by the microwave transmitter 12. When the measurement object has a relative speed with respect to the antenna, the frequency of the reflected wave changes due to the Doppler effect, and thus 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 for transmission and reception, but the antenna for transmission and reception 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 by a processing circuit in the sensor main body 1 and converted into velocity data. For example, the microwave Doppler sensor 10 having a predetermined frequency such as 24.15 GHz and the output signal of the Doppler sensor (a signal corresponding to movement of 6 mm at the above frequency) are compared with a reference value, and the Doppler A comparator that outputs a pulse (a high level signal if it is equal to or higher than the reference value and a low level signal if it is less than the reference value), and a signal output from the comparator, and a period of one cycle of the Doppler pulse by the reference clock It is preferable to include a microcontroller (control unit) that obtains the speed by measuring the speed and a display as display means for displaying the speed by control from the microcontroller.

  Alternatively, in place of the comparator, or provided with a comparator, the output signal of the Doppler sensor is input to a microcontroller (control unit), and the frequency of the output signal is obtained by predetermined signal processing such as FFT, thereby speed. It is good also as a structure which calculates | requires and displays on a display means. As the processing circuit, a processing circuit similar to the conventional one can be used. For example, a configuration similar to the configuration described in FIG. 2 of JP 2008-246139 A or the configuration described in FIG. 4 of JP 2010-25737 A can be employed. For example, the amplifier 14 may be provided outside the Doppler sensor.

  FIG. 3 shows a state in which the human-mounted speed measuring device 100 is mounted on a human ankle. As shown in FIG. 3, the speed measurement device 100 for human wearing is used by being worn on the ankle of a human axial foot to be bowled, for example. FIG. 3 shows a case where the hand is mounted on the left foot in a right-hand pitch, where the antenna 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. Is 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 competition, or for a certain time from the start of the pitching operation, or for a certain time from when the ball leaves the hand. It is good also as a structure which can be set arbitrarily, such as between. In this embodiment, since the ball passes sideways close to the left foot when released, the distance between the ball and the antenna is reduced by attaching the main body 1 to the shaft foot, and the measurement accuracy is improved. Also, such an attachment to the ankle is unlikely to interfere with the bowling throwing operation.

Furthermore, when the ball leaves the hand, the speed of the change in the position of the ankle is smaller than the other parts, and the variation in the position of the antenna due to the contraction or relaxation of the muscle during the throwing operation is also small. Less susceptible to Doppler signals.
Since the maximum value of the measured speed is the initial speed of the released ball, the display means may display the maximum speed on the display surface 4. The sensor body 1 may incorporate a memory element and store speed data therein, or may incorporate wireless means and transmit the speed data to a remote display or computer.

  In order to realize such a function, a communication interface, a memory element insertion slot, and the like may be provided in the sensor body 1. In the case of having a distant indicator, the sensor body 1 may be attached to the inside of the clothing. Although not shown, the sensor 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 measurement apparatus 200 for human wearing according to the second embodiment. In the present embodiment, the same members as those in the first embodiment are denoted by the same reference numerals, and redundant description thereof is omitted.
The human wearing speed measuring device 200 is a device for measuring the speed of the ball when the human releases or strikes the ball. I have.
In FIG. 4, the human-mounted speed measuring device 200 includes a sensor main body 1 incorporating a microwave Doppler sensor similar to that of the first embodiment and a fixed belt 6.

  Also in the present embodiment, the sensor main body 1 has a substantially rectangular parallelepiped shape, one surface of which is a mounting surface to the body, the length in the direction protruding from the body is shorter than the length in the direction along the body, It is constructed so as not to interfere with body movements during exercise and competition. The radiation surface of the microwave 5 is worn and used so as to face the front of the knee. Wear it on the knee of the axle when using it for bowling. When throwing baseball or softball, attach it to the knee of the foot that steps forward, not the pivot. When measuring the speed of the ball after kicking in the circuit, wear it on the knee of the axle. The rate of change of the knee position at the moment when the ball leaves the hand or foot is relatively small compared to other parts, and the variation in the antenna position due to muscle contraction or relaxation is also small, which 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 means for displaying the measured velocity of the ball, and has a display surface 4 for the measured velocity on the upper surface of the emission surface 2 of the microwave 5. Further, the sensor main body 1 may be attached to the inside of the fixed belt, and when the display surface 4 is not used, the sensor main body 1 may be attached to the inside of the clothing.

  Also in this embodiment, it is possible to measure the velocity of the ball at a position where the relative distance and direction with respect to the human body to be thrown are almost constant, which can contribute to training and technical improvement of each game.

  FIG. 5 shows a state in which the human wearing speed measuring device 300 according to the third embodiment is worn on a shoe. The human wearing speed measuring device 300 is a device for measuring the speed of the ball when the human releases or hits the ball, and has a means for attaching to the shoe worn by the human who releases or hits the ball. I have. In particular, it is a suitable device for measuring the velocity of a bowling human when the ball is released. When used for bowling throwing, attach it to the shoes worn on the axle. When throwing baseball or softball, wear it on the shoes you put on the foot that you step forward, not the axle. When measuring the speed of the ball after kicking in the circuit, wear it on the shoe on the axle.

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

  As a means for attaching to the shoe 26 in the present embodiment, for example, a tape-like fastener that can be attached to and peeled off from the back surface of the sensor main body 20 and the attachment location of the shoe 26 is provided, and the sensor main body 20 is attached. It is possible to attach a hook on the back of the shoe and attach it to the shoelace, or 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 apparatus 300 is worn at the moment when the ball leaves the hand or foot is small, and the influence of muscle contraction or relaxation in a throwing operation or the like is small. Less susceptible to Doppler signals caused by movement of For example, in the case of bowling, since the ball passes sideways close to the shoe worn on the axle when released, mounting the sensor body 20 on the shoe reduces the distance between the ball and the antenna, thereby improving the measurement accuracy. improves.

  FIG. 6 shows a state in which the human-wearing speed measuring device 400 according to the fourth embodiment is worn on a shoe. Similarly to the third embodiment, the human wearing speed measuring device 400 is a device for measuring the speed of the ball when the human releases or hits the ball, and is worn by the person who releases or hits the ball. A means for attaching to a shoe is provided. In particular, it is a suitable device for measuring the velocity of a bowling human when the ball is released. The foot to be worn in each competition is the same as in the third embodiment.

As shown in FIG. 6, in the human wearing speed measuring device 400, the sensor main body 30 incorporating the microwave Doppler sensor is integrated and embedded in the shoe. The radiation surface 2 of the microwave 5 is fixed so as to face the front of the shoe.
The sensor main body 30 has a display means for the measured velocity of the ball, and is provided with a display surface 34 for the measured velocity on the upper surface of the emission surface 32 of the microwave 5. The sensor body 30 is provided with an operation switch, and a battery is built in to supply power to a microwave Doppler sensor or 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 apparatus, and it is excellent in fixing strength and stability as a mounting means. In addition, the same effects as those of the third embodiment can be obtained.

DESCRIPTION OF SYMBOLS 1, 20, 30 Sensor main-body part 2 Release | release surface 3 Wrapping 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 Speed measurement device for human wear

Claims (5)

  A Doppler sensor that radiates a wave of a predetermined frequency toward the object and receives a reflected wave of the wave from a bowling ball;
  An apparatus for measuring a pitching speed of a bowling ball based on a signal from the Doppler sensor,
  A means for attaching a housing having the Doppler sensor to a human.
  A device comprising:   2. The apparatus according to claim 1, wherein the attachment means is means for attaching the Doppler sensor to a human axial foot to be bowled.   The mounting means is means for mounting the antenna on a portion of the human foot that is bowling below the knee or on a shoe worn on the foot.
The apparatus according to claim 2.   Comprising means for displaying the velocity of the object measured by the Doppler sensor;
  The display surface of the display means is arranged at a position where the human can visually recognize immediately after the bowling ball leaves the human body. apparatus.   The Doppler sensor is a microwave Doppler sensor, and the wave radiation surface is configured to be disposed inside clothing worn by the human.
An apparatus according to any one of claims 1 to 4, characterized in that

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