JP6534176B2 - Vertical jump measurement device - Google Patents

Description

  The present invention relates to a vertical jump measurement apparatus for measuring the jump height of vertical jump, and, for example, vertical jump of human, dogs, cats, monkeys, rabbits, kangaroos, frogs, dolphins, animals such as robots, or robots etc. It can be used to measure the height.

  A conventional vertical jump measuring device has a belt fixed to the subject's waist, and has a structure in which a built-in string is built in the measuring device at the time of jumping, from the length of the string before jumping to the length of the string after jumping Displacement was measured and displayed as the measurement result.

  On the other hand, there are also devices that automate measurement. For example, an operation detection apparatus that acquires acceleration data from detection means that is mounted or gripped by a user and detects an acceleration according to the user's movement, analyzes the acceleration data, calculates airborne time, and calculates jump height Is known (see Patent Document 1).

  There is also known a functional measurement device which detects a hovering time from a subject's departure to landing using a mat switch to detect a jumping height (see Patent Document 2).

JP, 2012-217584, A JP 2008-029475 A

  However, in the conventional vertical jump measuring device for measuring the displacement of the length of the cord described above, it is necessary to attach and detach the belt every time the subject changes, and the work of winding up the stretched cord every measurement. In addition, it takes time and effort, and since one result is output only once per measurement, it was not suitable for multiple continuous measurements.

  Further, in the motion detection device described in Patent Document 1 described above, although the measurement is automated, the user is required to attach or grip the detection means for detecting the acceleration, so that it takes time and effort to mount, or Depending on the condition, there arises a problem that the stability of the measurement is lacking.

  Furthermore, in the functional measurement device described in Patent Document 2 mentioned above, since the impact at the time of landing is repeatedly applied to the mat switch, a problem arises in the durability. And, if the object to be measured is not human but has a high jumping power such as kangaroo, and a large animal, the problem of durability will be more remarkable since the impact is large. In addition, since the jumping reference surface is a mat switch, the hardness or elasticity of the mat switch may affect jumping. In addition, when kicking the mat switch, there is a possibility to step twice. In addition, since the jumping reference surface is a mat switch, depending on the type of object to be measured, it may occur that mat switches having different sensitivities must be prepared. For example, if the weight of a human adult, such as a human child, a cat or a frog, is lighter than that of a human adult, it may be necessary to increase the sensitivity of the mat switch somewhere. And, since the jumping reference surface becomes a mat switch, it is not possible to measure the jumping height from the water surface like the measurement of the jumping power of a dolphin, and also the jumping height on trampolines and the step board for gymnastics It is not possible to measure jump height using

  An object of the present invention is to provide a vertical jump measurement apparatus which can reduce the time and effort of measurement, is suitable for continuous measurement, and is excellent in durability.

The present invention is a vertical jump measurement device for measuring the jump height of a vertical jump,
Light emitting means disposed at a distance in the vertical direction from the jumping reference surface and emitting laser light in the horizontal direction;
Light receiving means for receiving laser light;
The first output change indicating the transition from the state where the laser light is irradiated to the object to be measured to the state where the laser light is not irradiated using the output from the light receiving means, and the laser light is not irradiated to the object An output change detection unit that executes a process of detecting a second output change that indicates a transition from the state to the irradiated state;
A process of acquiring a first time when the first output change is detected by the output change detection means and a second time when the second output change is detected, or from the time of the first output change detection Clocking means for executing a process of measuring a time interval up to detection of the second output change;
The airborne time of the object to be measured is calculated from the difference between the first time and the second time acquired by the timekeeping means, or the time interval measured by the timekeeping means is taken as the airborne time of the object to be measured. And jump height calculating means for executing processing for calculating the jump height of the object to be measured using the gravitational acceleration.
The present invention is characterized by further comprising: output processing means for executing a process of outputting the jumping height calculated by the jumping height calculation means.

  Here, "laser light" includes visible light lasers and infrared lasers. That is, laser light having a wavelength in the visible range to the infrared range is included.

  In addition, “the measurement target” is mainly a human being, but it is an organism or an object that can be regarded as free fall only by the action of gravity without being affected by friction or resistance of air, and so on. For example, animals such as dogs, cats, monkeys, rabbits, kangaroos, frogs, dolphins, robots (humanoid robots, dog robots, etc.), fish (like flying fish like flying fish that extend fins and glide) The fish that can be used can not be regarded as free fall, so they can be non-flyable birds such as ostrich and penguin. With regard to jumping of the animal, induction may be performed according to the type of animal, such as by placing food at the top, putting something of interest to the animal, putting something used for show training, or the like. Then, the jumping height of a human or animal using an instrument may be measured, for example, the jumping height of a human or animal using a stick-like play device (referred to as hopping) that is played by jumping with the force of a spring (referred to as hopping). You may measure the jumping height of a person or animal riding on a bicycle, the jumping height of a person or animal carrying a trampoline, or the jumping height of a person or animal using a step board for gymnastics. In addition, even in the case of a person who does not use a device, the jumping height of a human being in an encumbranced state is not limited to the vertical jumping with both legs performed in a normal physical strength measurement, and the jumping height of a human arm in the standing state. May be measured.

  Furthermore, the “jumping reference surface” is a surface (relatively hard surface) of an object with little or no change in surface shape, such as the ground, the floor of a building, and horizontal planes formed inside and outside the structure, etc. However, for example, in the measurement of the jumping power of dolphins, it may be used as the surface, and in the measurement of the jumping height by trampolines (the combined strength of the skill of the gymnast and the performance of the trampoline itself), the cloth of the trampoline is stretched. It may be used as the installation surface of the frame, or in the case of using a leveling board for gymnastics, it may be the upper surface etc.

  And in this invention, since arithmetic processing is performed using "gravity acceleration", when only calling it "perpendicular direction" in this-application specification, the perpendicular direction (direction where gravity acts) is meant.

  Further, the “light emitting means” and the “light receiving means” are preferably separated from the viewpoint of measurement accuracy and stability, but they may be integrated. The latter integration is a so-called integrated light emitting and receiving case, in which case the laser light emitted from the light emitting means is not normally returned to the light receiving means (at the same position as the light emitting means). When the object of measurement is hit, the light is reflected back to the light receiving means, and the amount of light received is increased.

  Furthermore, in the “transition from the state where the laser light is irradiated to the object to be measured to the state not irradiated” in the “output change detection means”, the object to be measured moves upward immediately after the jumping starts, and the entire object to be measured is moved. Is the timing above the radiation plane (plane parallel to the horizontal plane) of the laser light, and “transition from the state where the laser light is not irradiated to the object to the state where it is irradiated” is the measurement object Is the timing immediately before falling from the highest reaching point and reaching the jumping reference surface.

  As described above, in the "output change detection means", the state is determined not by the presence or absence of light reception of the laser light by the "light receiving means" but by the presence or absence of the irradiation of the laser light to the measurement object (whether the laser light strikes the measurement object). What is described is the case of the "light receiving means" for the same movement of the measurement object in the case of the type in which the "light emitting means" and the "light receiving means" described above are separated and in the case of the integral type. This is because the output (the presence or absence of light reception) is reversed.

  That is, in the case of the type in which the "light emitting means" and the "light receiving means" are separated, and in the case of the integral type, the presence or absence of the irradiation of the laser light to the measuring object (the laser light strikes the measuring object Is the same in that it can be detected by the presence or absence of the light reception of the laser light by the "light receiving means". However, in the case of the type in which the "light emitting means" and the "light receiving means" are separated, when the laser light strikes the measuring object and the measuring object blocks the laser light, the light receiving by the "light receiving means" is lost. There is light reception by the "light receiving means" when the laser beam is not blocked. On the other hand, in the case where the "light emitting means" and the "light receiving means" are of an integral type, when the laser light strikes the measuring object and is reflected, there is light reception by the "light receiving means" and the laser light does not hit the measuring object Since the laser light does not return, the light reception by the "light receiving means" is lost. Therefore, the outputs (the presence or absence of light reception) of both types of "light receiving means" are reversed.

  In the vertical jump measuring apparatus according to the present invention, the measuring instrument is not mounted on the measuring object (in the case of a human being, the subject), and therefore, it is not necessary to attach and detach the measuring instrument. It takes less time and continuous measurement can be performed easily and smoothly.

  In addition, when the measuring object is attached to or held by the measuring object, there is a possibility that the position of the measuring device being attached or held (relative position to the entire measuring object) may be shifted during measurement. In the invention, since the light emitting means and the light receiving means are disposed at a relatively fixed position with respect to the jumping reference surface, not on the side of the measurement object moving up and down (meaning fixation during measurement, before and after measurement It is possible to avoid such inconveniences, without making it possible to adjust the arrangement position in

  Furthermore, since the measurement is performed using a laser beam, it is not necessary to set the mat switch on the jumping reference surface, so the impact applied when jumping up or falling to the jumping reference surface (landing etc.) In this way, it is possible to avoid such a problem that the device breaks down, and it is possible to solve the problem of durability.

  And since it is not necessary to install the mat switch on the jumping reference surface, the jumping reference surface can be in a state according to the type of the object to be measured and the purpose of the measurement, for example, ground, wooden floor, concrete floor , Water surface, installation surface of exercise equipment, etc. can be freely selected. Moreover, since laser light is used in addition to the freedom of selection of the jumping reference surface, measurement can be performed without contact with the measurement object, so that there is less restriction on the measurement object and a long detection distance can be taken. Because it is possible, it is possible to measure various types of measurement objects, which achieve the above purpose.

  <Composition for emitting laser light which is separated from the light emitting means and the light receiving means and fan-likely spreads>

Also, in the above-described vertical jump measurement device,
The light emitting means is configured to emit laser light in a fan-shaped state in the horizontal direction,
A plurality of light receiving means are disposed at different positions on the laser beam emission surface,
The output change detection means
When detecting the first output change, transition from a state in which any of the plurality of light receiving means does not receive the laser light to a state in which all the plurality of light receiving means receive the laser light Detect output change,
When detecting the second output change, transition from a state in which all of the plurality of light receiving units receive the laser light to a state in which any of the plurality of light receiving units does not receive the laser light It is desirable to be configured to execute a process of detecting an output change shown.

  When the light emitting means and the light receiving means are thus separated and the fan-shaped laser beam is emitted, the position of the measuring object when jumping up (usually when the measuring object is a human being) Even if the position of the foot) and the position of the measuring object at the time of falling to the jumping reference surface (landing, etc.) are offset, it is possible to perform the measurement.

  Further, since laser light is projected from one light emitting means toward a plurality of light receiving means, a plurality of light emitting means and a plurality of light receiving means having the same number as the light emitting means and the light receiving means are one to one. As compared with the installation, it is possible to simplify the device configuration and reduce the device cost.

Further, in the case where the light emitting means and the light receiving means described above are separated, and a fan-shaped laser beam is emitted,
The output processing means is
When the first output change is detected by the output change detecting means, the light receiving means which did not receive the laser light before the output change, and the output change when the second output change is detected by the output change detecting means It is judged whether the light receiving means which did not receive the laser beam in the later state agrees with each other or whether the displacement amount of the arrangement position of these light receiving means is within a predetermined range, A process of outputting instruction information based on the determination result or the determination result may also be executed.

  As described above, in the case where the light reception states of the plurality of light receiving means in the state immediately before the detection of the first output change and the state immediately after the detection of the second output change are compared, the position of the measurement object when jumping up It is possible to detect inconsistencies between the position of the object to be measured (in the case of human beings, the position of the foot usually) and the position of the object at the time of falling to the jumping reference surface (landing etc.) It becomes possible to determine whether the object jumps straight up. For this reason, it informs the subject of measurement or the person who performs measurement (in some cases, the subject of measurement may be the person who performs the measurement) that the subject of measurement has not jumped straight up and that it is preferable to perform remeasurement. Or, it is possible to output information instructing re-measurement and the like.

In the case where the light emitting means and the light receiving means described above are separated and the fan-shaped laser beam is emitted,
A plurality of light emitting means and light receiving means are vertically spaced from each other,
The output change detection means
Processing for detecting first and second output changes with respect to each set of plural sets of light emitting means and light receiving means arranged at different height positions;
The clock means is
Processing for acquiring the first and second times or processing for measuring a time interval from detection of the first output change to detection of the second output change is executed as processing for obtaining the airborne time With
As processing for obtaining the initial velocity, (A) processing for acquiring the first time for both upper and lower light receiving means of the plurality of light receiving means arranged at different height positions, (B) light reception for both upper and lower light receiving means A process of acquiring a second time for the means, and (C) a rise time from the time of detection of the first output change of the lower light receiving means to the time of detection of the first output change of the upper light receiving means (D) a process of measuring a falling time from the detection of the second output change of the upper light receiving means to the detection of the second output change of the lower light receiving means; A) is configured to execute processing combining the (D),
Jumping height calculation means
In addition to processing to calculate the jump height of the measurement object using airborne time and gravitational acceleration,
Whether the initial velocity is calculated from the difference of the first time obtained by the process of (A), or the initial velocity is calculated from the difference of the second time obtained by the process of (B) The initial speed is calculated using the rising time obtained in the process, or the initial speed is calculated using the falling time obtained in the process of (D), or these are combined to calculate the initial speed. , Calculating the jumping height for comparison of the object to be measured using the initial velocity and the gravitational acceleration.
The output processing means is
Whether the difference between the two is within a predetermined range by comparing the jumping height calculated using the airborne time and the gravitational acceleration with the comparative jumping height calculated using the initial velocity and the gravitational acceleration It is also possible to execute a process of determining the judgment result and outputting instruction information based on the judgment result or the judgment result.

  When the jumping height obtained from the "airtime" and the jumping height for comparison obtained from the "initial velocity" are compared as described above, it is possible to determine the validity of the measurement result. For this reason, the measurement object or the person performing the measurement is informed that the measurement result is not appropriate, information instructing re-measurement, and adjustment of the distance (offset) between the jumping reference surface and the laser light emission surface are instructed. It is possible to output information to

  As described above, according to the present invention, the jumping height is measured by detecting the airborne time of the object to be measured using a laser beam, and therefore no work of attaching and detaching the measuring instrument is required. It is possible to realize a vertical jump measuring device with excellent durability because it is easy and smooth to perform continuous measurement without requiring much time and time, and there is no need to arrange the mat switch on the jumping reference surface. effective.

BRIEF DESCRIPTION OF THE DRAWINGS The whole block diagram of the vertical jump measurement apparatus of one Embodiment of this invention. The perspective view which shows the external appearance of the perpendicular | vertical jump measurement apparatus of the said embodiment. The top view of the light reception unit which comprises the perpendicular | vertical jump measurement apparatus of the said embodiment. Explanatory drawing of the measuring method by the perpendicular | vertical jump measuring apparatus of the said embodiment. The figure of the flowchart which shows the measurement procedure by the perpendicular | vertical jump measurement apparatus of the said embodiment. The perspective view which shows the form of the deformation | transformation of this invention. Explanatory drawing of the arithmetic processing in the form of the said modification.

  An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the overall configuration of the vertical jump measuring apparatus 10 of the present embodiment, and FIG. 2 shows its appearance in a perspective view. Moreover, FIG. 3 is a top view of the light reception unit 30 which comprises the vertical jump measurement apparatus 10, FIG. 4 is explanatory drawing of the measuring method by the vertical jump measurement apparatus 10. As shown in FIG. Furthermore, in FIG. 5, the measurement procedure by the vertical jump measurement device 10 is shown in a flowchart.

  The vertical jump measurement device 10 is a device for measuring the jump height by the vertical jump at the leg power of both feet, which is one item of the generally performed physical strength measurement of a human being. Therefore, in the present embodiment, the object to be measured is a human being, and therefore, it is referred to as a subject. However, the measurement object of the present invention is not limited to human beings, and is not limited to ordinary physical strength measurement.

  1 and 2, the vertical jump measuring apparatus 10 comprises a light emitting unit 20 and a light receiving unit 30 disposed opposite to the light emitting unit 20. Furthermore, the light receiving unit 30 wirelessly transmits a personal computer (hereinafter referred to as Sometimes abbreviated as PC)) is connected. As shown in FIG. 2, the light emitting unit 20 and the light receiving unit 30 both have a substantially rectangular external shape, but the present invention is not particularly limited to this shape. It is sufficient that the position of the light receiving means 31 can be fixed. In addition, the meaning of fixing the position means that it is not necessary to move during measurement, and does not prevent the installation position from being able to be adjusted in the vertical direction.

  The sizes of the light emitting unit 20 and the light receiving unit 30 are, for example, L1 = L2 = L4 = L5 = 100 mm, L3 = L6 = 150 mm, and the distance between the light emitting unit 20 and the light receiving unit 30 is, for example, Although it is about W = 1 m, the present invention is not limited to these numerical values, and the type of the object to be measured, the intensity of the laser beam, the angular spread θ of the fan of the laser beam, the laser from the jumping reference surface 1 (see FIG. It may be determined according to the distance (offset) F or the like in the height direction to the light emission surface. Furthermore, the value of this offset F has an appropriate value according to the type of the measurement object, and for example, in the case of measurement of vertical jump of a normal human as in this embodiment, F should be about 50 mm. However, the present invention is not limited to this, and may be adjusted according to, for example, the difference between adults and children.

  The light emitting unit 20 includes one light emitting means 21 for emitting laser light, and a power source 22 for supplying power to the light emitting means 21.

  The light emitting means 21 is a line type laser on which laser light is projected in a line shape, and in the present embodiment, for example, it comprises a laser pointer including a light emitting element and a cylindrical diffusion lens called a rod lens. It is configured. This line type laser makes parallel light (pointer light) projected from the laser pointer incident on the cylinder side surface of the diffusion lens, and emits laser light which spreads in a fan-like manner at a wide angle from there. As shown in FIG. 2, the light emitting means 21 is installed so that the radiation plane of the fan-shaped laser beam is parallel to the horizontal plane, and the laser beam is projected onto the light receiving unit 30 in a horizontal line. It has become so. Further, the light emitting means 21 is disposed at a distance of height dimension F from the jumping reference surface 1 (see FIG. 4). The height dimension F is an offset dimension when calculating the jump height of the object to be measured. The lens for expanding the laser beam in a fan shape is not limited to the cylindrical diffusion lens.

  More specifically, the type of laser is, for example, a semiconductor laser, and the fanning angle can be adjusted at, for example, 30 degrees to 45 degrees, and a red line type laser with a laser wavelength of, for example, about 650 nm is preferable. It can be adopted. In the present embodiment, as an example, the fan-shaped angles are diffused to about 30 degrees in total (about an angle θ = about 30 degrees in FIG. 2) of 15 degrees on either side. The type of laser is not limited to the semiconductor laser, and is not limited to the red visible light laser, and may be, for example, a visible light laser other than red and an infrared laser. In short, it is only necessary to form a fan-shaped diffused laser beam. In the present invention, instead of a line type laser, a point type laser in which laser light is projected in a point shape may be used, but there is a case where a test subject does not jump right up, so that it corresponds to that. In addition, it is preferable to use a line-type laser from the viewpoint of simplification of the device configuration and reduction of the device cost as compared with the case where a plurality of point-type lasers are provided to cope with such a case.

  The light receiving unit 30 includes a plurality of (in this embodiment, four by way of example) light receiving means 31, a microcontroller of one or more chips (hereinafter referred to as a microcomputer) 40, and a power supply for supplying power to the microcomputer 40. 50, the input operation means 60 consisting of various buttons, the number display 71 for displaying the identification information of the test subject (hereinafter sometimes simply referred to as the number of people) and the number of measurements of the same test subject Number display 72 for displaying identification information (hereinafter may be simply referred to as the number), a result display 73 for displaying the jump height of the subject as a measurement result, and a battery indicator 81 for displaying the remaining amount of the battery. , SD indicator 82 for displaying the read / write status of the SD card, the SD module 90, the Bluetooth (registered trademark) of the PC, etc. And a communication module 91 for performing wireless communication.

  The light receiving means 31 converts a change in the amount of light to be incident into an electric signal and outputs the electric signal, and together with the light emitting means 21 forms a photoelectric switch (photoelectric sensor). In this embodiment, as an example, it is comprised by the photodiode which is a light receiving element. As shown in FIG. 2, the plurality of (four) light receiving means 31 emit light so that the laser light projected in a line can simultaneously be received on the emitting surface of the laser light from all the light emitting means 21. At the same height position as the means 21, they are arranged at equal intervals in the horizontal direction. Accordingly, the plurality of (four) light receiving means 31 are all disposed at a distance of height dimension F from the jumping reference surface 1 (see FIG. 4). In addition, these arrangement | positioning intervals do not necessarily need to be equal intervals or substantially equal intervals.

  The microcomputer 40 constitutes an A / D conversion means 41, an output change detection means 42, a clock means 43, a clock data storage means 44, a jump height calculation means 45, and an output processing means 46. . Although this microcomputer 40 is illustrated as one chip for convenience of explanation in FIG. 1, functions may be dispersed as appropriate using a plurality of chips. For example, judgment processing by the output change detection means 42 and In order to smoothly execute the time acquisition process by the clocking means 43 and to perform accurate measurement, the output (lighting) process to the people indicator 71 and the number indicator 72 not directly related to the measurement is separately performed. The microcomputer 40 may be in charge of this.

  The A / D conversion means 41 is constituted by an A / D converter built in the microcomputer 40, and executes a process of converting an analog output from each light receiving means 31 into digital data.

  The output change detection means 42 uses a plurality of (four) outputs from the light receiving means 31 (data after A / D conversion by the A / D conversion means 41) to start irradiating the subject with the laser light. Execute processing for detecting a first output change indicating transition to a non-irradiated state and a second output change indicating transition from a state in which the laser light is not irradiated to the subject to a state in which the laser light is irradiated It is a thing.

  At this time, when the output change detection means 42 detects the first output change, a plurality (four) of the plurality of (four) light receiving means 31 receives no laser light, (C) detecting a change in output indicating transition to a state in which all the light receiving means receive the laser light. In addition, when detecting the second output change, any of the plurality (four) of light receiving units 31 is selected from the state in which all of the plurality of (four) light receiving units 31 receive the laser light. Detects a change in output that indicates a transition to a state where no laser light is received. The details of the output change detection process will be described later in the description of the process flow using FIG.

  The clocking means 43 executes processing for acquiring a first time T1 when the first output change is detected by the output change detection means 42 and a second time T2 when the second output change is detected. It is. The first time T1 and the second time T2 are times held by the microcomputer 40. The clock data storage unit 44 stores the acquired first time T1 and second time T2, and includes volatile memory provided in the microcomputer 40, but leaves it in the non-volatile memory. You may do so. In volatile memory in the microcomputer 40, an area for storing various data necessary for processing, such as the number of people, the number of times, measurement results, etc. is secured as well as the data for timekeeping. Although the program is stored in the sex memory, illustration is omitted.

  The clocking means of the present invention may be configured to execute a process of measuring a time interval ΔT from the detection of the first output change to the detection of the second output change. For example, from the time of detection of the first output change, counting of the elapsed time or counting by the corresponding counter may be started, and the process of ending the count may be performed at the time of detection of the second output change. At this time, the elapsed time and the value of the counter are stored in the clock data storage means.

  The jumping height calculating means 45 calculates the airborne time ΔT = T2-T1 from the difference between the first time T1 and the second time T2 acquired by the timekeeping means 43, or the time interval ΔT measured by the timekeeping means The flying time of the subject is calculated by using the flying time ΔT and the gravitational acceleration g as the flying time. The details of the process of calculating the jumping height (H + F) will be described later in the description of the process flow using FIG. 5.

  The output processing means 46 outputs the jumping height (H + F) calculated by the jumping height calculating means 45 to the result display unit 73 as a measurement result, and “SD,“ number of persons, number of times, measurement result ”in csv format etc. It transmits to the SD module 90 for writing on a card, and further, executes processing for transmitting "number of persons, number of times, measurement result" to the communication module 91 for wirelessly transmitting to the PC as necessary. In the present embodiment, the measurement result is output to the result display unit 73 in units of cm, but the present invention is not limited to this.

  Further, the output processing means 46 performs output (lighting) processing to the number display 71 and the number display 72 according to the input operation received by the input operation means 60. Furthermore, the output processing means 46 performs output processing to the battery indicator 81 using information obtained from the power supply 50 and performs output processing to the SD indicator 82 using information obtained from the SD module 90.

  The input operation means 60, as shown in FIG. 3, includes a "number-of-people" button 61, a "number-of-people" button 62, a "number-of-times" button 63, and a "number of times" A button 64, a "measurement start" button 65, and an "ON / OFF" button 66 for turning on / off the power supply 50 are included. The buttons 61 and 62 are provided to increase and decrease the serial number which is the identification information of the subject by one, and the buttons 63 and 64 are the serial number which is the identification information of the number of measurements for the same subject. Is provided to increase and decrease by one.

  The SD module 90 is a control unit for reading and writing the SD card, and has an insertion slot (SD slot) into which the SD card is inserted.

  In the above, the output change detection means 42, the clocking means 43, the jump height calculation means 45, and the output processing means 46, which are constituted by the microcomputer 40, are a processor in the microcomputer 40 and a program defining the operation procedure of this processor It is realized by a working memory.

  In such an embodiment, the jump height by the vertical jump is measured by the vertical jump measurement apparatus 10 as follows.

  In FIG. 5, first, the light emitting unit 20 and the light receiving unit 30 are powered on, and projection of laser light from the light emitting unit 20 and light reception of laser light by the light receiving unit 30 are started (step S1). When the projection of the laser light is started, the projection will be continued for a long time. Further, the buttons 61 to 64 (see FIG. 3) of the input operation means 60 are depressed to set the number and the number of subjects, and the output processing means 46 causes the number display 71 to display the set number of people. The number of times set is displayed on the number display 72 (step S1). At this time, the set number of persons / number of times is stored in the memory in the microcomputer 40. Then, the subject moves to a predetermined jump position between the light emitting unit 20 and the light receiving unit 30, and enters a standby state for starting measurement (step S1). In addition, after a test subject moves to a predetermined jump position, the projection of a laser beam may be started, or the number of persons and the number of times may be set.

  Next, when the subject (may be a measurer who assists the subject) presses the “measurement start” button 65 (see FIG. 3), the output change detection means 42 accepts the input operation and the measurement starts. (Step S2). Then, after the start of measurement, the output change detection means 42 uses the output from the plurality (four) of light receiving means 31 (data after A / D conversion by A / D conversion means 41) to 4 from the state (FIG. 4 (1) before jumping: the state in which the subject's foot is exposed to the laser beam), the state not irradiated (FIG. 4 (2) immediately after the jumping: the subject A process of detecting a first output change indicating transition to a state in which the laser beam is not applied to the foot of (1) is executed (step S3).

  Here, for example, the data after A / D conversion of the analog output from each light receiving unit 31 is simplified (as a result of determination of the presence or absence of light reception using a threshold value) to indicate that the laser light is received. Assuming that the state is “1” and the laser light is not received is “0”, the outputs from the plurality of (four) light receiving means 31 are, for example, (1, 1, 0, 1) at first. This is a state in which the subject's foot blocks the laser beam and the third light receiving means 31 does not receive the laser beam, as in the state before (1) jump in FIG. 4.

  Then, the state such as (1, 1, 0, 1) continues for a while (in this case, for example, even if it changes to (1, 0, 1, 1) or (1, 0, 0, 1) etc. The same condition is considered to be continued as long as even one "0" is included.) If it becomes (1,1,1,1) after that, plural (four) light reception It has shifted to the state where all the means 31 receive light. This is a state in which the rising subject's foot reaches the upper side of the laser beam emission surface and does not block the laser beam at all as in the state immediately after the (2) jump in FIG. Therefore, in the process of detecting the first output change, all of the plurality of (four) light receiving units 31 are selected from the state in which any of the plurality of (four) light receiving units 31 does not receive the laser light. It is a process of detecting an output change indicating transition to a state of receiving a laser beam, and it is determined whether all the plurality of (four) light receiving means 31 receive a laser beam or not. It becomes a process to repeat.

  Subsequently, when the first output change is detected by the output change detection means 42, the first time T1 indicating the time is acquired by the clocking means 43, and the acquired first time T1 is stored as clock data. The information is stored in the means 44 (step S4).

  Then, the subject is not irradiated with the laser light by using the output from the plurality (four) of the light receiving means 31 (data after A / D conversion by the A / D conversion means 41) by the output change detection means 42 From the condition (the condition that the subject's foot is not exposed to the laser light) to the condition being illuminated ((3) the state immediately before landing during the fall: the condition that the subject's foot hits the laser light) A process of detecting a second output change indicating transition is executed (step S5).

  Here, if the state (1, 0, 1, 1) is reached after the state (1, 1, 1, 1) continues for a while, the second light receiving means 31 does not receive the laser light It has moved to the state. This is a state in which the foot of the falling subject reaches the radiation surface of the laser beam and blocks the laser beam as in the state (3) of FIG. 4 just before landing. Therefore, in the process of detecting the second output change, any of the plurality of (four) light receiving units 31 is selected from the state in which all of the plurality of (four) light receiving units 31 receive the laser light. It is a process of detecting an output change indicating a transition to a state in which laser light is not received, and it is determined whether or not any of a plurality of (four) light receiving means 31 receives no laser light. Processing is repeated.

  Subsequently, when the second output change is detected by the output change detection means 42, the second time T2 indicating the time is acquired by the clocking means 43, and the acquired second time T2 is stored as the data for time measurement. The information is stored in the means 44 (step S6).

  Thereafter, the jumping height calculating means 45 calculates the airborne time ΔT from the difference between the first time T1 and the second time T2 which are obtained by the timekeeping means 43 and stored in the timekeeping data storage means 44. (Step S7). The calculation formula is ΔT = T2-T1. The calculated flying time ΔT is stored in the memory in the microcomputer 40. The airborne time ΔT is the time for the subject to reach the highest reaching point from the height position of the laser beam emission surface, drop from there, and return again to the laser beam emission surface height position, During this time, gravity acceleration g continues to act on the subject.

  Subsequently, the jumping height calculating means 45 executes processing for calculating the jumping height (H + F) of the subject using the calculated airtime ΔT and the gravitational acceleration g (step S8). Here, H is the distance from the height position of the laser beam emission surface to the highest arrival point, and F is the offset, that is, the height position of the laser beam emission surface from the jumping reference surface 1 (see FIG. 4) It is the distance to

Also, let V ₀ be the initial velocity (the velocity when passing the height position of the laser beam emission surface). In the present specification, both the magnitude of the velocity when passing the height position of the emission surface of the laser light when rising and the magnitude of the velocity when passing when falling are both referred to as the initial velocity. In free fall, the magnitude of the velocity of the highest arrival point is zero, and when it falls to the height position of the emission surface of the laser light, the gravitational acceleration g acts for half of the airborne time (ΔT / 2) Continuing, the initial velocity V ₀ will be reached. Therefore, the value obtained by integrating the gravitational acceleration g from t = 0 to t = (ΔT / 2) in time becomes V ₀ , and (ΔT / 2) × g = V ₀ holds.

  On the other hand, considering the conservation law of mechanical energy between the height position (point A) of the emission surface of the laser beam and the highest reaching point (point B), the following equation is established.

(1/2) mV _A ² + mgh _A = (1/2) mV _B ² + mgh _B

Here, substituting V _A = V ₀ , h _A = 0, V _B = 0, h _B = H into the above equation yields the following equation, and further, (ΔT / 2) × g = When V ₀ is substituted and V ₀ is extinguished, the distance H from the height position (point A) of the laser beam emission surface to the highest reach point (point B) is obtained.

V ₀ ² / (2 g) = H

  Then, when the offset F is added to the obtained H, the test subject's jumping height (H + F) can be calculated.

  Thereafter, the jump height (H + F) calculated by the output processing means 46 is output to the result display unit 73 as a measurement result, and "number of persons, number of times, measurement result" is written to the SD card in csv format etc. It transmits to the SD module 90, and further executes processing to transmit to the communication module 91 in order to wirelessly transmit "the number of persons, the number of times, the measurement result" to the PC as necessary (step S9).

  The PC performs tallying and the like of measurement results for a plurality of persons. For example, the number of persons (the serial number which is the identification information of the subject) and the student ID number etc. are linked, and the measurement result is outputted in the form of a table to the student directory etc prepared beforehand by the user. In addition, average values, maximum values, minimum values, variances, standard deviations are obtained from measurement results for a plurality of persons, and count processing by grade, gender, etc. is performed.

  According to this embodiment, the following effects can be obtained. That is, since the vertical jump measuring apparatus 10 is not configured to mount the measuring instrument on the measurement target (subject), the attaching and detaching operation of the measuring instrument is not required. It can be done easily and smoothly.

  In addition, when the measuring object is attached to or held by the measuring object (subject), the position (relative position to the entire measuring object) of the attached or held measuring device may be disadvantageously shifted during the measurement. However, in the vertical jump measuring apparatus 10, the light emitting means 21 and the light receiving means 31 are fixed relative to the jumping reference surface 1 (see FIG. 4), not during measurement subject (subject) moving up and down. Such an inconvenience can be avoided since the fixed position is placed.

  Furthermore, since the vertical jump measurement apparatus 10 is configured to perform measurement using a laser beam, it is not necessary to install the mat switch on the jump reference surface 1 (see FIG. 4), so jump time or jump standard It is possible to avoid such a disadvantage that the device breaks down due to an impact applied upon falling to the surface 1 (such as landing), and the problem of durability can be solved.

  And since it is not necessary to install the mat switch on the jumping reference surface 1 (see FIG. 4), the jumping reference surface 1 may be, for example, the ground, a wooden floor, a concrete floor, etc. It can be freely selected from the installation surface of the exercise equipment and the like. Moreover, in addition to the freedom of selection of such a jumping reference surface 1, as a feature of measurement by laser light, non-contact measurement becomes possible, and a long detection distance becomes possible. The jump measurement device 10 can be used in various applications other than measurement of normal human vertical jump.

  In addition, since the light emitting means 21 is configured to emit the laser light in a fan-like spread state in the horizontal direction, the position of the object to be measured when jumping (the position of the subject's foot in this embodiment) Even if the position of the measuring object at the time of falling (landing etc.) to the reference plane 1 (see FIG. 4) is offset, the measurement can be performed.

  Furthermore, since laser light is projected from one light emitting means 21 toward a plurality of (four) light receiving means 31, the light emitting means 21 and the light receiving means 31 are made one to one to form a plurality of light emitting means 21. The simplification of the apparatus configuration and the reduction of the apparatus cost can be achieved as compared with the case where a plurality of light receiving means 31 of the same number are installed.

  Further, the vertical jump measurement device 10 can be operated with less power because it has a simple device configuration. For this reason, it is possible to secure the power necessary for the operation by the battery loading to the device and the USB power supply by the connection with the PC or the like. And, the ease of securing such necessary power, combined with the ease of transportation due to the small size and light weight of the device and the ease of installation operation and withdrawal operation, enables use of the device in various places. For example, the vertical jump measurement device 10 can be used not only indoors but also various outdoor places. However, in the case of the outdoors, it may be difficult to measure due to the influence of sunlight. In that case, it is sufficient to select a shade, a time zone after sunset, etc. May be provided in the recess formed in the housing of the light receiving unit 30 so that only light in the horizontal direction is hit. Of course, the vertical jump measuring apparatus 10 may be fixedly installed at a predetermined place and used, but the total facility cost can be suppressed in that it can be moved and used at various places. For example, when it is necessary to perform measurement in several gymnasiums, the vertical jump measuring device 10 may be brought into each gymnasium when necessary, rather than permanently installing a measuring device in each gymnasium.

  Since the vertical jump measuring apparatus 10 includes the SD module 90 for writing data to the SD card and the communication module 91 for wireless transmission of data to the PC, the measurement results for a plurality of persons are stored and stored. It is possible to easily carry out the aggregation process of the measurement results.

  The present invention is not limited to the above-described embodiment, and modifications and the like within the scope where the object of the present invention can be achieved are included in the present invention.

  For example, in the vertical jump measuring device 10 according to the embodiment, the jumping height calculating unit 45, the output processing unit 46, and the result display unit 73 are provided in the light receiving unit 30, but the first acquired by the timing unit 43 The time T1 and the second time T2 are wirelessly transmitted from the communication module 91 to the PC, or wiredly transmitted, and the PC calculates the jump height and outputs the measurement result obtained by the calculation. May be

  Further, in the light receiving unit 30, only a plurality (four) of light receiving means 31 are provided, or a plurality (four) of light receiving means 31 and an A / D conversion means are provided, and a plurality of (four) light receptions are provided. Each output of the means 31 may be sent directly to the PC instead of the microcomputer 40, and the PC may execute A / D conversion and subsequent processing, or may execute processing after A / D conversion. . However, from the viewpoint of downsizing of the measuring apparatus, easiness of transportation, easiness of installation or measurement preparation, etc., it is preferable to execute by the microcomputer 40 provided in the light receiving unit 30.

  Furthermore, in the vertical jump measuring apparatus 10 of the embodiment, the measurement is started by pressing the “measurement start” button 65 (see FIG. 3) provided on the upper surface of the light receiving unit 30. Information may be transmitted from the PC and received wirelessly by the communication module 91 or may be received by wire to start measurement.

  Further, in the vertical jump measuring apparatus 10 according to the embodiment, the distance (offset) F between the jumping reference surface 1 (see FIG. 4) and the emission surface of the laser light is fixed. The value may be adjustable. At this time, the whole of the light emitting unit 20 and the light receiving unit 30 may be moved up and down, or only the light emitting means 21 and the light receiving means 31 may be moved up and down.

  Furthermore, the output processing means 46 of the embodiment outputs the measurement result to the result display unit 73, transmits it to the SD module 90, writes it to the SD card, and further transmits it to the communication module 91 as necessary. In the present embodiment, the output form of the output processing means in the present invention is not limited to this, and in short, it is sufficient if the measurement result can be output in at least one output form. . For example, the installation of the SD module 90 or the SD indicator 82 may be omitted, and recording may not be performed on the SD card, or instead of recording on the SD card, or together with recording on the SD card Recording on another recording medium such as the above, or recording on a storage device such as a hard disk drive (HDD) or a solid state drive (SSD) may be performed. Further, the installation of the communication module 91 may be omitted, or the other party of communication by the communication module 91 may not be a PC but a portable device such as a smartphone or a tablet. Furthermore, the result display unit 73 is provided in that the measurement target (subject) or the person who performs the measurement (the person who assists, supervises, manages the measurement of the subject) can immediately confirm the measurement result visually on the spot. If it is preferable to provide another output form, the installation of the result display unit 73 is not essential. For example, instead of the display on the result display unit 73 or together with the display on the result display unit 73 , Voice output and print output may be performed.

  Then, the output processing unit 46 may be configured to have the following additional functions. That is, when the first output change is detected by the output change detection means 42 (acquisition timing of the first time T1 immediately after the jump in FIG. 4 (2)), the laser light is not received in the state before the output change. When the second output change is detected by the received light receiving means 31 and the output change detection means 42 (the acquisition timing of the second time T2 immediately before the landing in (3) in FIG. 4), after the output change It is judged whether the light receiving means 31 which did not receive the laser light agrees with each other or whether the deviation amount of the arrangement position of these light receiving means 31 is within a predetermined range, and the judgment result Alternatively, a process of outputting instruction information based on the determination result may also be executed. The determination result and the instruction information may be output to the result display section 73 or may be output by providing another display section.

  Here, the case of “matching or not matching” means, for example, that the state immediately before the first time T1 is (1, 0, 1, 1) and the second time T2 is the same. The state immediately after is also (1, 0, 1, 1), which is the case where both are exactly the same.

  In addition, “whether or not the displacement amount of the arrangement position is within a predetermined range” is, for example, when the state immediately before the first time T1 is (1, 0, 1, 1), Although it is within the allowable range that the state immediately after time T2 of 2 becomes (1, 1, 0, 1), the state immediately after second time T 2 becomes (1, 1, 1, 0) Is outside the allowable range, or it is out of the allowable range that the state immediately after the second time T2 is (1, 1, 0, 0), etc., the position of “0” (laser light For the position of the light receiving means 31 which does not receive light, it is meant to predetermine an allowable deviation amount. At this time, the allowable range of the amount of deviation may be determined numerically so that the amount of deviation of the position of “0” is acceptable up to one, and when the number of light receiving means 31 is small, an allowable change pattern or All unacceptable change patterns may be stored. As in the former case, when the allowable range of the deviation amount is determined by a numerical value, for example, the change from (1, 0, 1, 1) to (1, 1, 0, 1) is the second light receiving means 31 Is the change from the second light receiving means 31 to the third light receiving means 31, so the shift amount is 1 and the change from (1, 0, 1, 1) to (1, 1, 1, 0) is the change from the second to the fourth Therefore, the shift amount is set to 2 and the change from (1, 0, 1, 1) to (1, 1, 0, 0) is regarded as the change from the second to the 3.5th, and the shift amount = It can be 1.5, and so on.

  As described above, in the case where the light reception states of the plurality of light receiving means 31 in the state immediately before the detection of the first output change and the state immediately after the detection of the second output change are compared, It is possible to detect a mismatch between the position (in the above embodiment, the position of the subject's foot) and the position of the measurement object at the time of falling (landing etc.) to the jumping reference surface 1, and to detect the displacement amount. It can be judged whether or not the subject jumps straight up. Therefore, the subject (subject) should not jump up straight or perform re-measurement on the subject (subject) or the person performing measurement (the subject who assists, supervises, manages the subject's measurement). It can be informed that it is preferable, or can output information instructing re-measurement.

  Also, the vertical jump measurement device 10 of the above embodiment is configured to obtain the jump height from the "airborne time", but as in the vertical jump measurement device 200 shown in Fig. 6, the jumping height from "airborne time" In addition to the process of determining the height, a process of determining the jumping height for comparison from the "initial velocity" may be performed.

  The vertical jump measuring apparatus 200 includes a light emitting unit 220 and a light receiving unit 230, and the light emitting means 221 and a plurality of (four) light receiving means 231 for simultaneously receiving laser light emitted fanned therefrom are vertically spaced. A plurality of sets (three sets in the example of FIG. 6) are provided. The three sets in FIG. 6 are called the upper stage, the middle stage, and the lower stage. The upper, middle, and lower light emitting means 221 may be configured by separating laser light emitted from one light emitting element into a plurality (three).

  The output change detection means of the vertical jump measurement apparatus 200 is the first set of the light emission means 221 and the light reception means 231 (upper, middle and lower) of the plurality of sets (three sets) of light emission means arranged at different height positions. Execute processing to detect 1 and second output change.

  The time measurement means of the vertical jump measurement device 200 is the first time for the lower light receiving means 231 as in the case of the embodiment (see FIG. 2) having only one step as the process for obtaining the "airborne time". A process of acquiring T1 and a second time T2 or measuring a time interval ΔT from the detection of a first output change of the lower light receiving unit 231 to the detection of a second output change Run.

  Also, the time counting means of the vertical jump measurement device 200 combines any of the following processes (A) to (D) or (A) to (D) as a process for obtaining the "initial velocity". Execute the process.

  (A) is a process of acquiring a first time T1 for both upper and lower light receiving means 231 among the plurality of light receiving means 231 arranged at different height positions. In the example of FIG. 6, since there are the upper, middle, and lower light receiving means 231, two stages among them are selected as a pair of upper and lower stages, and the first time for the light receiving means 231 of each stage is selected. Get T1. Specifically, the first time T1 for the plurality of (four) light receiving means 231 in the upper stage of (A-1) and the first time T1 for the plurality of (four) light receiving means 231 in the lower stage are obtained. (A-2) The first time T1 for the plurality of (four) light receiving means 231 in the middle and the first time for the plurality of (four) light receiving means 231 in the lower (A-2) A process of acquiring T1 may be performed, and (A-3) the first time T1 for the plurality of (four) light receiving means 231 in the upper stage and the first time for the plurality of (four) light receiving means 231 in the middle. A process of acquiring time T1 of 1 may be performed. Here, as an example, as shown in FIG. 7, the processes (A-1) and (A-2) are performed. Therefore, in that case, the process of acquiring the first time T1 for the light receiving means 231 of all the upper, middle and lower stages is performed.

  (B) is a process of acquiring a second time T2 for both upper and lower light receiving means 231 among the plurality of light receiving means 231 arranged at different height positions. The process (B) is different from the process (A) in that the second time T2 is acquired instead of acquiring the first time T1. Therefore, specifically, the process of (B-1) selecting the upper stage and the lower stage, the process of (B-2) selecting the middle and the lower stage, and the upper stage and the middle stage (B-3) The processing of (B-1) and (B-2) is performed as shown in FIG. 7 as an example. Therefore, in that case, a process of acquiring the second time T2 for the light receiving means 231 of all the upper, middle and lower stages is eventually performed.

(C) is a process of measuring the rise time ΔT _up from the detection of the first output change of the lower light receiving unit 231 to the detection of the first output change of the upper light receiving unit 231. In the example of FIG. 6, since there are the upper, middle and lower light receiving means 231, two stages among them are selected as the upper and lower stages to be paired, and the detection time of the first output change is selected for each stage. Catch and measure the rise time ΔT _up to move from the lower stage to the upper stage. Specifically, (C-1) first output change of the plurality of (four) light receiving means 231 in the upper stage from detection of the first output change of the plurality of (four) light receiving means 231 in the lower stage It may be subjected to a treatment for measuring the rise time [Delta] T _{Stay up-to} the detection of, (C-2) lower plurality (four) plurality of first at the time of detection of the change in the output of the light receiving means 231 middle of ( A process of measuring the rise time ΔT _up to the time of detection of the first output change of the four light receiving units 231 may be performed, and a plurality (four) of the light receiving units 231 in the middle of (C-3) may be performed. A process may be performed to measure the rise time ΔT _up from the detection of the first output change of the first to the detection of the first output change of the plurality of (four) light receiving means 231 in the upper stage. Moreover, you may process (C-1) and (C-2) similarly to the case of the process of (A), for example.

(D) is a process of measuring the falling time ΔT _down from the detection of the second output change of the upper light receiving unit 231 to the detection of the second output change of the lower light receiving unit 231. The process (D) is different from the process (C) described above only in that the falling time ΔT _down is measured instead of the rising time ΔT _up . Therefore, specifically, the process of (D-1) selecting descent from the upper stage to the lower stage, the process of (D-2) selecting descent from the middle stage to the lower stage, and descent from the upper stage to the middle stage There is a process of (D-3) to select. Moreover, you may process (D-1) and (D-2) similarly to the case of the process of (B), for example.

As in the case of the jumping height calculating means 45 of the embodiment, the jumping height calculating means of the vertical jumping measuring device 200 calculates the jumping height (H + F) of the object to be measured using the airtime ΔT and the gravitational acceleration g. In addition to the processing described above, processing for calculating the comparison jumping height (H + F) of the object to be measured using the initial velocity V ₀ and the gravitational acceleration g is also performed as follows.

That is, the jump height calculation means of the vertical jump measurement device 200 calculates the initial velocity V ₀ from the difference at the first time T1 obtained in the process of (A) or is obtained by the process of (B). The initial velocity V ₀ is calculated from the difference at the second time T 2, or the initial velocity V ₀ is calculated using the rise time ΔT _up obtained in the process of (C), or the process of (D) using falling time [Delta] T _down obtained by either calculating the initial velocity, or to calculate the initial velocity V ₀ in combination thereof, further, by using the initial velocity V ₀ and the gravitational acceleration g calculated, the measured A process of calculating a comparison jumping height (H + F) is executed.

Specifically, as shown in FIG. 7, for example, two initial speeds are obtained from the difference between the first time T1 obtained by the processing of (A-1) and (A-2) of the above (A). calculating a V _0, (B-1) of the above (B), and calculates the initial velocity _{V 0} which two from the difference between the second time T2 obtained by the process of (B-2). Therefore, four initial velocities V ₀ are calculated by a total of four methods.

First, the first time T1 of the lower light receiving means 231 is subtracted from the first time T1 of the middle light receiving means 231 obtained in the process of (A), and ΔT _up = T1 (middle)-T1 (lower) Thus, the rising time ΔT _up from the lower stage to the middle stage is determined. Then, the obtained rising time ΔT _up is divided by the distance D1 from the lower stage to the middle stage, and the average velocity V _m from the lower stage to the middle stage is obtained from V _m = ΔT _up / D1. Further, since the gravitational acceleration g always acts downward and decelerates from the lower stage to the middle stage, the initial velocity V ₀ (that is, the velocity at the lower position) is the gravitational acceleration with respect to the average velocity V _m The velocity change is corrected by g, and it can be obtained by the equation V ₀ = V _m + g × (ΔT _up / 2).

Similarly, the first time T1 of the lower light receiving means 231 is subtracted from the first time T1 of the upper light receiving means 231 obtained in the process of (A), and ΔT _up = T1 (upper stage)-T1 (lower ) To determine the rise time ΔT _up from the lower stage to the upper stage. Then, the calculated ascending time ΔT _up is divided by the distance D2 from the lower stage to the upper stage, and the average velocity V _m from the lower stage to the upper stage is determined from V _m = ΔT _up / D2. Furthermore, correction of the velocity change due to the gravitational acceleration g is performed on the determined average velocity V _m , and the initial velocity V ₀ (that is, the velocity at the lower position) is V ₀ = V _m + g × (ΔT _up / It can be determined by the equation 2).

Next, the second time T2 of the upper light receiving means 231 is subtracted from the second time T2 of the lower light receiving means 231 obtained in the process of (B) above, and ΔT _down = T2 (lower side) − T2 (upper ), To determine the fall time ΔT _down from the upper stage to the lower stage. Then, the obtained falling time ΔT _down is divided by the distance D2 from the upper stage to the lower stage, and the average velocity V _m from the upper stage to the lower stage is determined from V _m = ΔT _down / D2. Furthermore, since the gravitational acceleration g always acts downward and accelerates from the upper stage to the lower stage, the initial velocity V ₀ (that is, the velocity at the lower position) is the gravitational acceleration with respect to the average velocity V _m Correction for the speed change due to g is performed, and it can be obtained by the equation V ₀ = V _m + g × (ΔT _down / 2).

Similarly, the second time T2 of the middle light receiving means 231 is subtracted from the second time T2 of the lower light receiving means 231 obtained in the process of (B), and ΔT _down = T2 (bottom)-T2 (middle ) To determine the falling time ΔT _down from the middle stage to the lower stage. Then, the obtained falling time ΔT _down is divided by the distance D1 from the middle stage to the lower stage, and the average velocity V _m from the middle stage to the lower stage is calculated from V _m = ΔT _down / D1. Furthermore, correction of the velocity change due to the gravitational acceleration g is performed on the determined average velocity V _m , and the initial velocity V ₀ (that is, the velocity at the lower position) is V ₀ = V _m + g × (ΔT _down / It can be determined by the equation 2).

Then, after obtaining the four initial velocity V ₀ in this way four ways to determine the initial velocity V ₀ employed. The determination method is arbitrary. For example, the second velocity or the third velocity initial velocity V ₀ may be selected except the maximum initial velocity V ₀ and the minimum initial velocity V ₀ , and the second and third velocities may be selected. The average value of the initial velocity V ₀ of the second magnitude may be used, or the average value of the four initial velocities V ₀ may be used. Note that if the rise time ΔT _up and the fall time ΔT _down between the middle and upper stages are divided by their distance D3, two more average speeds V _m = ΔT _up / D3, V _m = ΔT _down / D3 Can be obtained, so that a total of six initial speeds V ₀ can be obtained.

After that, the jumping height calculating means of the vertical jump measuring device 200 sets the initial velocity V ₀ and the distance H from the height position of the lower light receiving means 231 to the highest reaching point as detailed in the above embodiment. Since the relationship of V ₀ ² / (2 g) = H holds in the meantime, the obtained initial velocity V ₀ is substituted into this equation to calculate the value of H, and the value of the offset F is added to compare Execute processing to calculate the jump height (H + F). In addition, although it can be set as D1 = about 150 mm, D2 = about 200 mm etc., it is not limited to this numerical value. The value of the offset F may be similar to that of the above embodiment.

The output processing means of the vertical jump measurement device 200 has the jumping height (H + F) calculated using the airborne time ΔT and the gravitational acceleration g in the same manner as in the above embodiment, and the initial velocity V ₀ and The jump height for comparison (H + F) calculated using the gravitational acceleration g is compared to determine whether or not the difference between the two is within a predetermined range, and the determination result or an instruction based on the determination result Execute processing to output information. The allowable range can be determined, for example, by collecting a large number of samples that can be determined that appropriate jumping has been performed and normal measurement has been performed by performing experiments in advance.

When the configuration is such that the jumping height (H + F) obtained from the “airborne time ΔT” and the comparison jumping height (H + F) obtained from the “initial velocity V ₀ ” are compared as described above, Relevance can be judged. For this reason, information to inform the subject of measurement (subject) or the person performing measurement (person who assists, supervises, manages the measurement of the subject) that the measurement result is not appropriate, or instructs remeasurement, or offset F It is possible to output information instructing adjustment of the value, and the like.

  As described above, the vertical jump measuring device according to the present invention measures, for example, the vertical jump height of a human, a dog, a cat, a monkey, a rabbit, a kangaroo, a frog, a dolphin, an animal such as a robot or a robot. Suitable for use in

DESCRIPTION OF SYMBOLS 10, 200 Vertical jump measurement apparatus 21, 221 Light emission means 31, 231 Light reception means 42 Output change detection means 43 Time measurement means 45 Jump height calculation means 46 Output processing means

Claims (3)

A vertical jump measuring device for measuring the jump height of the vertical jump,
Light emitting means disposed at a distance in the vertical direction from the jumping reference surface and emitting laser light in the horizontal direction;
Light receiving means for receiving the laser light;
Using the output from the light receiving means, a first output change indicating transition from a state in which the laser light is irradiated to the object to be measured to a state in which the laser light is not irradiated, and the laser light is irradiated to the object to be measured An output change detection unit that executes a process of detecting a second output change that indicates a transition from a non-operating state to a irradiated state;
Processing of acquiring a first time when the first output change is detected by the output change detection means and a second time when the second output change is detected, or the first output change Clocking means for executing a process of measuring a time interval from the time of detection to the time of detection of the second output change;
The airborne time of the measurement object is calculated from the difference between the first time and the second time acquired by the timekeeping means, or the time interval measured by the timekeeping means is taken as the airborne time of the measurement object And a jumping height calculating unit that executes processing for calculating the jumping height of the measurement target using the airtime and the gravitational acceleration.
And output processing means for executing processing for outputting the jumping height calculated by the jumping height calculating means .
The light emitting means is configured to emit the laser beam in a fan-shaped state in the horizontal direction,
A plurality of the light receiving means are disposed at different positions on the emission surface of the laser light,
The output change detection means
When detecting the first output change, all of the plurality of light receiving units receive the laser light from a state in which any of the plurality of light receiving units does not receive the laser light. Detect output changes indicating a transition to state,
When detecting the second output change, any of the plurality of light receiving units does not receive the laser light from the state in which all of the plurality of light receiving units receive the laser light What is claimed is: 1. A vertical jump measuring apparatus, which is configured to execute a process of detecting an output change indicating transition to a state . The output processing means
When the first output change is detected by the output change detecting means, the light receiving means which has not received the laser light in a state before the output change and the second output change is detected by the output change detecting means Whether or not the light receiving means which did not receive the laser beam in the state after the output change at the time of detection coincides with each other, or the displacement amount of the arrangement position of these light receiving means is within a predetermined range. whether the determined, vertical jump measuring device according to claim 1, characterized in that it is configured to also perform a process of outputting the instruction information based on the determination result or the judgment result. The light emitting means and the light receiving means are arranged in plural sets with vertical intervals.
The output change detection means
A process of detecting a change in the first and second output is performed for each set of a plurality of sets of the light emitting means and the light receiving means arranged at different height positions,
The clocking means is
As processing for obtaining the airborne time, processing of acquiring the first and second times or measuring a time interval from detection of the first output change to detection of the second output change As well as
(A) A process of acquiring the first time for the light receiving means of both the upper and lower ones of the plurality of light receiving means arranged at different height positions as a process for obtaining the initial velocity A process of acquiring the second time for both the light receiving means, and (C) the first output for the light receiving means on the upper side from the time of detection of the first output change for the light receiving means on the lower side (D) a process of measuring a rising time until a change is detected, a detection time of the second output change of the light receiving means on the upper side, and a detection time of the second output change of the light receiving means on the lower side It is configured to execute a process of measuring a fall time to the time or a process combining these (A) to (D),
The jumping height calculating means is
In addition to the processing of calculating the jump height of the object to be measured using the airtime and the gravitational acceleration,
Calculate the initial velocity from the difference of the first time obtained in the process of (A) or calculate the initial velocity from the difference of the second time obtained in the process of (B) Or the initial speed is calculated using the rising time obtained in the process (C), or the initial speed is calculated using the falling time obtained in the process (D), Alternatively, it is configured to calculate the initial velocity by combining them, and further to execute processing for calculating the jumping height for comparison of the object to be measured using the initial velocity and the gravitational acceleration.
The output processing means
The jump height calculated using the airborne time and the gravitational acceleration is compared with the comparison jump height calculated using the initial velocity and the gravitational acceleration, and the difference between the two is determined in advance The vertical jump measuring apparatus according to claim 1 or 2 , characterized in that it is configured to determine whether it is within the range and to output instruction information based on the determination result or the determination result.

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