JPH09168529A - Floor reaction force measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable to determine a foot position on a plate body and a sole shape in contact with the plate body by calculating the pressure of sole of a person to be examined on the plate body as various position pressures corresponding to the resolution of a distribution pressure measuring means. SOLUTION: A floor reaction force measuring device A is composed of a detection base 1 which measures the center of gravity fluctuation of a person to be examined and an operation processor 10 which analyzes measured data. The detection base 1 is equipped with a detection plate 2, a load cell 3 which measures a vertical reaction force applied to the detection plate 2, and a distribution pressure sensor 4 which measures distribution pressures on the detection plate 2. The detection base 1 measures the center of gravity fluctuation of a person to be examined as well as pressure distributions of sole of the person to be examined on the detection plate 2. As a foot position of the person to be examined can be determined by the distribution pressure sensor 4, measured data of the center of gravity fluctuation can be analyzed based on the foot position determined. Therefore, even if a foot position of the person to be examined is shifted on the detection base 1, measured data can be analyzed correctly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balance function test, orthopedics, rehabilitation medicine, and sports medicine by measuring a reaction force against a floor of a subject to measure a body sway in an upright posture of a subject, or The present invention relates to a floor reaction force measuring device used for analysis of balance, motor function, and the like during exercise such as walking of a subject.

[0002]

2. Description of the Related Art Equilibrium function tests, which are central to the diagnosis of dizziness and imbalance, rehabilitation medicine, physical education,
In the field of sports medicine, etc., a body sway meter (Stab) that records body sway (sway) in an upright posture as sway of the center of gravity
ilometer). This body sway meter measures body sway in the upright posture as the center of gravity sway,
The characteristics, properties, direction, etc. of the sway pattern are analyzed and grasped from the measured data, and based on the analysis results, diagnosis of lesions such as balance function and nervous function, or recovery status of balance function and nervous function by rehabilitation, etc. It can be judged and grasped very objectively.

In an equilibrium function test or the like using this body sway meter, the body sway of the subject is measured in two states, that is, when the eyes are opened and when the eyes are closed. The load information of the subject, which maintains an upright posture on the object, is measured by a plurality of load detection sensors (load cells), and based on the load information measured by the plurality of load detection sensors, the center of the reaction force of the subject (the center of oscillation) ) Calculate the position.

Further, the above-mentioned center of gravity sway meter measures the vertical reaction force of the subject to the detection table by using the plurality of load cells.
BACKGROUND ART A floor reaction force meter is known as a device used in the fields of rehabilitation medicine, physical education / sports medicine, and the like. In the floor reaction force meter, for example, a well-known three-component load cell is used instead of the load cell that detects the load that is the vertical reaction force.

The three-component load cell has two orthogonal axes (hereinafter referred to as an X axis and a Y axis) of the reaction force acting on the detection table along the surface direction of the upper surface of the detection table. The X-axis direction component force detector and the Y-axis direction component force detector for detecting the component force in
A Z-axis direction component force detector for detecting a component force in the direction of the Z-axis). The floor reaction force meter including the three-component load cell as described above is a weight distribution during exercise, based on the detection result from each of the three-component load cells and the information on the moment about each axis. Driving force, braking force, weight transferability, torsional force, stride length and walking speed during walking can be measured.

[0006]

One of the items of the center-of-gravity sway test using a center-of-gravity oscillometer is a center-of-sway test. The deviation of the center of oscillation or the average center of oscillation in the X-axis direction and the Y-axis direction is measured. And
The center of the sole is actually a reference point provided on the detection table of the center of gravity sway meter.When measuring the center of gravity, the subject adjusts the reference point of the detection table to the center of the sole. And ride on the detection table.

In the conventional detection table, a footprint and a reference point are shown at positions where the feet of the detection table are placed, so that the subject can easily adjust the position of the feet. I have. In addition, on the upper surface of the detection table, the position of the toe and the position of the heel are shown as lines for each foot size, so that the position of the foot on the detection table can be relatively accurately adjusted. However, if the subject does not understand the meaning of the symbol on the upper surface of the detection table and performs the test, there is a possibility that the center of the sole at the time of measurement and the reference point of the detection table are shifted, Even if one intends to get on the detection table with the feet aligned, the positions may be slightly off.

[0008] That is, the analysis data output from the body sway meter is based on the assumption that the subject has put his / her foot on the correct position of the detection table. In the case of deviation, data may have an error. Also, in the above floor reaction force meter, when the subject performs some kind of exercise on the detection table, the position of the foot may be able to be estimated from the position of the reaction force center, etc. Is not measured. Also,
In the floor reaction force meter, when the subject performs some kind of exercise on the detection table, it can be determined from the data of the three-component load cell only whether the center of gravity is placed on the toe or the center of gravity is placed on the heel. It is difficult to judge.

Further, in the above-mentioned floor reaction force meter, when the walking state is measured, it is possible to estimate a stride or the like from the state of movement of the center of gravity, but it is not possible to measure an actual stride. Therefore, when trying to judge various motor functions and the like by the floor reaction force meter, sufficient data is not always obtained.

The present invention has been made in view of the above circumstances, and obtains data of reaction force measuring means such as a load cell when measuring the above-mentioned body sway meter and floor reaction force meter, and also measures the actual position of the foot and , A floor reaction force measurement device that can simultaneously obtain data such as the shape of the portion that is in contact with the foot detection table and which part of the portion that is in contact with the foot detection table is under load. It is about.

[0011]

A floor reaction force measuring device according to claim 1 of the present invention is a floor reaction force measuring device for measuring a reaction force of a subject on a floor, and a plate corresponding to a floor on which the subject rides. Body, reaction force measuring means for measuring reaction force of the subject with respect to the plate body, distributed pressure measuring means provided on the upper surface of the plate body and for measuring pressure distribution with respect to the plate body upper surface of the subject, and the reaction force It is a means for solving the above-mentioned problem that it comprises a data analysis means for calculating various analysis data based on the data measured by the measurement means and the distributed pressure measurement means.

[0012] According to the above configuration, the reaction force measuring means can perform measurement as a normal body sway meter or a floor reaction force meter, and the distributed pressure measuring means simultaneously performs the measurement with the upper surface of the plate body. Can be measured. When the pressure distribution on the upper surface of the plate is measured, the pressure applied by the sole of the subject riding on the plate is measured as the pressure at each position corresponding to the resolution of the distribution pressure measuring means. It is possible to know the position of the foot on the plate, the shape of the portion of the sole in contact with the plate, and the like.

When the pressure distribution on the upper surface of the plate is measured, the shape of the portion of the sole in contact with the plate is determined along with the shape of the portion of the sole in contact with the plate. It is possible to know whether the power is mainly applied to, for example, the part of the toe of the foot, the part of the base of the toe,
It is possible to know where the force is applied in the heel part. Therefore, it is possible to determine the equilibrium function, the exercise function, and the like by using both the data as the center of gravity sway meter and the floor reaction force meter and the data as the pressure distribution meter.

That is, the data of the distribution manometer and the data of the gravity center sway meter or the floor reaction force meter which have been separately measured can be measured at once, and the measurement can be saved. The data measured by the distributed pressure measuring means and the reaction force measuring means are different from the case where the distributed pressure and the reaction force are simply measured separately. Since the motor function and the equilibrium function can be determined while associating the data with the reaction force data, the determination becomes more accurate.

Further, when the above-mentioned reaction force measuring means is used as a center of gravity sway meter, for example, when the deviation of the center of sway is measured, the actual position and the shape of the foot measured by the distributed pressure measuring means are used. Can be calculated. Therefore, when measuring the center of gravity sway as described above, even if the foot is not placed at the correct position corresponding to the reference point of the detection table, it is more based on the center of the actual sole calculated as described above. Accurate analysis results can be obtained.

Further, when the above-mentioned reaction force measuring device is used as a floor reaction force meter, for example, when a walking function is measured, a step length or the like is determined from an actual foot position or a foot shape measured by the distributed pressure measuring means. Can be measured, and a more accurate analysis result can be obtained. In the case where the floor reaction force measuring device of the present invention is used as a center of gravity sway meter, for example, a well-known load cell can be used as the reaction force measuring means. Alternatively, they may be arranged so as to support four points.

In the case where the above-mentioned floor reaction force measuring device is used as a center of gravity sway meter, the reaction force measuring means is not limited to a load cell, but may be any one which can measure a load applied to a plate at a plurality of places on the plate. Any material may be used.
When the floor reaction force measuring device of the present invention is used as a floor reaction force meter that can also measure a reaction force along the surface direction of a plate, a well-known three-component force load cell may be used as the reaction force measurement unit. For example, a three-component load cell may be arranged to support the four corners of the plate.

Further, the reaction force measuring means when the floor reaction force measuring device is used as a floor reaction force meter is not limited to the three-component force load cell, and may be, for example, along the X axis, Y axis, and Z axis. It is also possible to separately measure the reaction force. The data analysis means basically includes a CPU (central process CPU).
This is a well-known arithmetic processing unit having a sing unit, which has the same functions as conventional gravity center sway meters, floor reaction force meters, and distribution manometers. Arithmetic processing is performed using the position of the foot.

In the floor reaction force measuring apparatus according to the second aspect of the present invention, the reaction force measuring means is capable of measuring the reaction force in the vertical direction at at least three points of the plate body, and the data analyzing means is provided. , The foot position of the subject in the upright posture based on the pressure distribution measured by the distributed pressure measuring means, the foot position obtained as a reference, based on the data from the reaction force measuring means, The change in the floor reaction force center point in the upright posture was analyzed as a center of gravity sway, and various analytical data as a center of gravity sway monitor were calculated as the means for solving the above problems.

According to the above construction, the data analysis means obtains the foot position of the subject in the upright posture based on the pressure distribution measured by the distributed pressure measuring means, and the obtained foot position is used as a reference. , Based on the data from the reaction force measuring means, the change in the center point of the floor reaction force when the subject is standing upright is analyzed as the center of gravity sway, so the data is taken with the center of the sole as the reference point of the detection table as described above. Accurate analysis can be performed as compared with the case of analysis.

In the floor reaction force measuring means according to claim 3 of the present invention, the reaction force measuring means is capable of measuring the reaction force in the X direction and the Y direction along the plate surface of the plate body. The analyzing means obtains the position of the foot corresponding to the movement on the plate of the subject based on the pressure distribution measured by the distributed pressure measuring means, and the subject based on the reaction force measured by the reaction force measuring means. The analysis of the change in the reaction force with respect to the movement of the plate body was taken as the means for solving the above problems.

According to the above structure, the data analyzing means obtains the position of the foot corresponding to the movement of the subject on the plate body based on the pressure distribution measured by the distributed pressure measuring means, and measures the reaction force. Based on the data from the means,
Since the change of the reaction force with respect to the movement of the subject on the plate is analyzed, a more accurate value can be calculated in the analysis item in which it is preferable that the actual position of the foot such as the stride can be measured.

A floor reaction force measuring device according to a fourth aspect of the present invention has output means for outputting an analysis result by the data analyzing means, and the output means analyzes based on data from the reaction force measuring means. The output of both the result and the analysis result based on the data from the distributed pressure measuring means was taken as a means for solving the above problems. According to the above configuration, the series of movements of the subject can be compared with each other by referring to the distribution pressure data and the reaction force data obtained by simultaneously measuring the reaction force measurement means and the distribution pressure measurement means. Therefore, it becomes possible to more clearly determine the motor function and the balance function. Note that various printers and various displays can be used as the output means.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION A floor reaction force measuring device according to a first embodiment of the present invention will be described below with reference to the drawings. In addition,
The floor reaction force measuring device of the first example is obtained by applying the floor reaction force measuring device of the present invention to a body sway meter that measures body sway. The various types of analysis data calculated by the center of gravity sway measurement and the form of the output can be variously set according to the purpose. In the floor reaction force measuring device in the first example, as one example, the eye opening measurement and the eye closing measurement are performed. The analysis data of the following items 1 to 9 are calculated for both the eye-opening measurement and the eye-closing measurement, and the center of gravity sway locus of the first item and the eighth,
Regarding the trajectory of the deviation of the center of the sway related to the ninth item,
The floor reaction force measuring device that outputs a locus map will be described.

[1] Center-of-gravity sway trajectory The center-of-gravity sway trajectory is based on the trajectory pattern (type) of the balance reflex system, the central nervous system that controls the system, and which part of the system has an obstacle. Is a parameter that can be [2] Total trajectory length …………………… LNG [3] Unit trajectory length ………………… LNG / T
IME [4] Unit area locus length ……………… LNG /
E. FIG. AREA The total trajectory length, the unit trajectory length, and the unit area trajectory length indicate the magnitude of the sway. In particular, the unit area trajectory length indicates the fineness of the posture control, and grasps the state of the self-accepting posture control. Parameters that can be used.

[5] Outer peripheral area ……………… ENV. A
REA [6] Rectangular area ………………………… REC. A
REA [7] Effective value area RMS. A
REA The outer peripheral area, the rectangular area, and the effective area are parameters from which the degree of the imbalance disorder can be grasped. [8] Average oscillation displacement (X direction) DEV OF MX (Y direction) DEV OF MY [9] Motion center displacement (X direction) DEV OF XO (Y direction) DEV OF YO The average center displacement and the sway center displacement are the degree of deviation due to the left-right difference in muscle tone of the limbs and trunk caused by maze obstacles,
It is a parameter that can be used to determine the degree of increase or decrease in antimuscular tone.

The floor reaction force measuring device of the first example is
It has the following configuration. FIG. 1 is a diagram showing an appearance of a floor reaction force measuring device (gravitational sway meter) A to which the present invention is applied, and FIG. 2 is a block diagram showing an entire configuration of the floor reaction force measuring device A shown in FIG. is there. As shown in FIG. 1, the floor reaction force measuring device A of the first example has a built-in detection table 1 and an arithmetic processing unit (shown in FIG. 2) 11 described later for analyzing measurement data on the detection table 1. And an arithmetic processing unit 10. The detection base 1 and the arithmetic processing unit 10 are connected by a code c, and signals can be input and output between the detection base 1 and the arithmetic processing unit 10.

The detection base 1 is a substantially triangular flat base having a space on which both feet of the subject can be sufficiently placed.
The examinee takes off his shoes, climbs up to the detection table 1, and receives a measurement of the sway of the center of gravity in an upright posture. The detection table 1 has a substantially triangular detection plate 2 that forms the upper surface of the detection table 1 and three detection plates 2 that are disposed below the three apexes of the detection plate 2 while supporting the detection plate 2. Load cells 3
(The position is indicated by a broken line in FIG. 1), and a rectangular sheet-shaped distributed pressure sensor 4 arranged on a portion of the upper surface of the detection plate 2 on which the subject's foot rides.

The detection plate 2 is a plate having a substantially triangular shape as described above. On the upper surface on which the subject is placed, as shown in FIG. Left and right footprints 2b, 2b that specify the positions of both feet when the subject rides on the detection table 1 in an upright posture at positions on both sides of the reference point 2a, and the positions of the toes for each foot size. A plurality of lines (not shown) indicating the position of the heel are displayed.

The load cells 3 are well-known, and are arranged along the vertical direction (z-axis direction).
Can be measured, load information applied to each arrangement position is continuously detected, and the detected load information is sequentially output to the arithmetic processing unit 10. Then, the detection plate 2 and the load cell 3.
Is the same configuration as the detection table of the well-known body sway meter,
With the load information from at least three load cells 3, the center of the reaction force when the subject rides on the detection table 1 in the upright posture, that is, the center of the sway can be obtained.

The output signals indicating the load information from the load cells 3 are AD-converted via the input / output unit 12 of the arithmetic processing unit 10 and input to the arithmetic processing unit 11. The pressure sensor 4 includes two film substrates (not shown) arranged in parallel, an electrode layer (not shown) formed on the inner side of the film substrate, and left and right edges of one of the electrode layers. And an electrode terminal (not shown) formed on the upper and lower edges (side edges orthogonal to the left and right edges of one electrode layer) of the other electrode layer. Pressure-sensitive conductive layer formed between two electrode layers (not shown)
It is a well-known thing which consists of.

The electrode layer formed on the above-mentioned film substrate is formed in a stripe shape, and the stripe-shaped electrode layer on one film substrate and the stripe-shaped electrode layer on the other film substrate are different from each other. The electrodes are orthogonal to each other, and the linear electrodes of the two electrode layers intersect at many points. Since the respective linear electrodes of the two electrode layers are arranged to face each other with the pressure-sensitive conductive layer interposed therebetween,
The electrodes do not touch each other at each intersection,
Hereinafter, each intersection position is referred to as an intersection for convenience.

The pressure-sensitive conductive layer is made of, for example, pressure-sensitive conductive rubber in a state where conductive powder is dispersed in silicone rubber. The pressure can be converted to a resistance value. The pressure-sensitive conductive layer is not limited to the above-described pressure-sensitive conductive rubber, and may be any material as long as the resistance value changes when pressed. Further, as described later, the pressure sensor 4
It is not limited to the method of measuring the pressure based on the change in the resistance value as described above, but may be the one measuring the pressure based on the change in the capacitance.

In the matrix composed of the two electrode layers, the driving circuit (shown in FIG. 2) 5
Thereby, a voltage is sequentially applied to a plurality of stripe-shaped electrodes for one electrode layer, and the resistance value is sequentially measured for a plurality of stripe-shaped electrodes in the other electrode layer. The resistance value at each intersection of the striped electrodes of the two electrode layers is sequentially scanned and measured. The drive circuit 5 is used in the matrix-type pressure sensing device as described above, and is a well-known device having a multiplexer and the like, and drives the distribution pressure sensor 4 to measure the resistance value at each intersection as described above. It is supposed to.

The resistance value sequentially measured by the distributed pressure sensor 4 is output as an output signal indicating the pressure information, and the output signal indicating the pressure information from the distributed pressure sensor 4 (driving circuit 5) is output by the arithmetic processing unit. The data is AD-converted through the input / output unit 12 of 10 and input to the arithmetic processing unit 11. The arithmetic processing unit 10 includes, as shown in FIG.
An input / output unit 12 for inputting data from the load cell 3 and the distributed pressure sensor 4 and outputting a control signal to the drive circuit 5 to the distributed pressure sensor 4; , A display section 14 for displaying analysis results and other data, a printing section 15 for outputting analysis results and other data, a data output terminal 16, a floppy drive 17 And

The input / output unit 12 is a well-known data input / output interface, and has an A / D converter. The operation panel 13 has keys for instructing on / off of power, display of data on the display unit 14, printing of data in the printing unit 15, a mode changeover switch, a cursor key, and the like, It has a keyboard and the like for inputting data such as the name of the subject.

The display unit 14 is, for example, an LCD (liquid
A display, such as a crystal display, for displaying measurement data, analysis results, and the like. Printing section 15
Prints an analysis result or the like in the arithmetic processing unit 11. Note that the printing unit 15 can also output a drawing such as a graph showing the analysis result.

The data output terminal 16 is for outputting an analysis result in the arithmetic processing unit to, for example, another computer system. The floppy drive 17 is for storing data similar to the data output from the data output terminal 16 and for writing the data to a floppy disk (not shown).

The arithmetic processing unit 11 includes a central processing unit (CPU) 11a,
ROM (Read Only Memory) 11b and RAM (Random
Accesses Memory) 11c and the like, and basically has a function of analyzing distributed pressure information input from the distributed pressure sensor 4 and a function of analyzing load information input from the load cells 3.

The arithmetic processing unit 11 basically calculates the resistance value at each intersection between the striped electrodes of the distributed pressure sensor 4 input from the distributed pressure sensor 4 based on a conversion formula obtained in advance. Load per area (pressure)
The distribution pressure storage area e1 secured in the RAM 11c by associating the coordinate position of each intersection on the distribution pressure sensor 4 with the value of the load per unit area.
Has the function of storing in

The coordinate position of each intersection point in the distributed pressure sensor 4 uses the XY coordinates set on the detection plate 2 of the detection table 1 on which the distributed pressure sensor 4 is installed. The XY coordinate is the reference point 2a of the detection plate 2.
, And the base of an equilateral triangle formed by three load cells 3 (when both feet are placed on the detection plate 2,
The side on which the heel faces) is set so as to be parallel to the X axis.

Further, the arithmetic processing unit 11 obtains the area of the portion where the value of the load per unit area is not 0 at each coordinate position on the XY coordinates, and obtains the area of the area. At this time, the distributed pressure sensor 4
Since the subject has both feet on it, the above-mentioned area is divided into two, and the area of the two areas is determined. Further, the arithmetic processing unit 11 obtains a position that is the area center of the two regions obtained as described above.

Further, the arithmetic processing unit 11 has a function of displaying the load per unit area for each coordinate on the drawing corresponding to the coordinate position. For example, as shown in FIG. As shown in FIG. 4, mosaic-shaped graphic data in which the region is divided into the divided regions having the unit areas corresponding to the intersections, and the load of the intersection corresponding to the divided region is indicated for each divided region. The figure data in which the load per unit area for each coordinate is indicated by a contour line is created. Note that the graphic data shown in FIGS. 3 and 4 are actually shown by dividing the distribution pressure into a plurality of gradations in black and white or color.

The arithmetic processing unit 11 calculates the position of the load center (center of gravity) of the subject in real time, that is, in real time, based on the load information sequentially input from the three load cells 3. Note that the load cells 3... Continuously detect the load information and sequentially output the load information to the arithmetic processing device 11. The arithmetic processing device 11 outputs the sequentially input load information at regular intervals such as, for example, 50 milliseconds. Sampling is performed and arithmetic processing is performed to calculate a reaction force center position (oscillation center position).

When calculating the position of the center of gravity of the arithmetic processing unit 11, the position is basically obtained as a position on the XY coordinates with the reference point 2a of the detection plate 2 of the detection table 1 as the origin. The XY coordinates are basically the same as the XY coordinates used to indicate the coordinate position of each intersection in the distributed pressure sensor 4. The oscillation center position on the XY coordinates obtained by the arithmetic processing unit 11 is stored in the RAM as XY coordinate position data per unit time.
It is adapted to be stored in the central storage area e2 of 11c.

The arithmetic processing unit 11 has a ROM 11
Based on the analysis data calculation program stored in b, the various well-known nine items of analysis data described above are calculated from a large number of XY coordinate position data stored in the central storage area of the RAM 11c. When calculating the analysis data, an XY coordinate system indicating the position of the oscillation center is set to an XY coordinate system having the reference point 2a of the detection plate 2 as the origin.
The coordinate system is converted into an XY coordinate system having the origin at the center of the area of the region of both feet obtained by analyzing the data from the distributed pressure sensor 4.

That is, it is obtained not from the reference point 2 a of the detection plate 2, which may be deviated from the center of the area of both soles due to the displacement of the position of the subject's foot, but from the measurement data from the distributed pressure sensor 4. The area center is set as the origin of the XY coordinate system indicating the center position of the oscillation.

In the analysis of the data of the center of oscillation, the deviation of the center of oscillation with respect to the origin in the X-axis direction and the Y-axis direction is obtained. By using the XY coordinates whose origin is the actually measured area center, the deviation of the center of oscillation (and the deviation of the average center of oscillation) can be obtained more accurately. Then, the arithmetic processing unit 11
The graphic data is created so that the analysis result analyzed as described above can be output as, for example, a graph or the like.

Further, as the graphic data, data indicating a locus of movement of the center of oscillation on the XY coordinates with the lapse of time are created. Further, as shown in FIG. 5, image data in which image data indicating the locus t of the center of oscillation is superimposed on graphic data indicating the distribution pressure formed as described above by the distribution pressure sensor as described above are also created. ing.

Conventionally, as the locus of the center of shaking, graphic data indicating the sole when the subject's feet are placed on the correct position on the detection plate 2 is prepared in advance, and as shown in FIG. Although it was displayed, the figure showing the sole is
It was prepared in advance and did not indicate the actual foot of the subject. By superimposing the trajectory of the sway center on the graphic data indicating the distribution pressure as described above, the trajectory of the sway center and the distribution pressure data corresponding to the actual shape of the sole of the subject can be viewed. It has become.

The analysis result obtained by the arithmetic processing unit 11 and the graphic data created based on the analysis result as described above are displayed on the display unit 1 by operating the operation panel 13.
4. It can output to the printing unit 15, the floppy drive 17, and the data output terminal 16.

Next, a method of measuring the sway of the center of gravity in the floor reaction force measuring apparatus A of the first example will be described with reference to the flowchart of FIG. First, the measurer inputs subject information such as the subject's name, gender, age and the like from an operation panel 31 provided in the arithmetic processing unit 10. Then, the subject gets on the detection table 1. At this time, both feet are put on the detection table 1 in accordance with the reference point 2a, the figure 2b, 2b of the footprint, the toe line and the heel line for each foot size, which are displayed on the detection plate 2 of the detection table 1, Instruct the subject to take an upright position. In addition, since the center of gravity sway measurement includes an eye opening test and an eye closing test, for example, the subject is first asked to open his or her eyes.

After confirming the position of the subject's foot, the measurer turns on the measurement start switch (not shown) of the floor reaction force measuring device A to start the measurement of the sway of the center of gravity (step A1). In the floor reaction force measuring device A, first, the arithmetic processing device 1
The drive circuit 5 of the distributed pressure sensor 4 operates under the control of
The resistance value at each intersection of the electrodes in the distributed pressure sensor 4 is measured, and the distributed pressure information output from the distributed pressure sensor 4 is input to the arithmetic processing unit 11 (step A2).

Then, in the arithmetic processing unit 1, the resistance value at each intersection is converted into a load (pressure) per unit area (step A3), and the position of each intersection on the XY coordinate with the reference point 2a as the origin is obtained. Each time, the data of the load per unit area is stored in the distribution pressure storage area e1 of the RAM 11c (step A4). Next, after the measurement of the distributed pressure by the above-described distributed pressure sensor 4 is completed, load information applied to the detection plate 2 from both feet of the subject who maintains the upright posture during the measurement period is detected by the three load cells 3. Then, this is read by the arithmetic processing unit 11 (step A5). Then, based on the read load information, the arithmetic processing unit 11 calculates the position of the reaction force center (oscillation center) (step A6).

The oscillating center position calculated by the arithmetic processing unit 11 is converted into coordinate position data on the XY coordinates by the arithmetic processing unit 11, and is stored in the RAM 11c as XY coordinate position data per unit time at the time of eye opening measurement. The information is stored in the central storage area e2 (step A7) and transferred to the display unit 14 for display. Next, it is determined whether or not the time from the start of reading data from the load cells 3 to the present time has reached a preset measurement time (step A8). , The measurement of the open-eye character is terminated, and the process proceeds to step A10.

If the measurement time has not been reached,
Next, it is determined whether or not a predetermined unit time has elapsed since the previous reading of data from the load cells 3 (step A9).
Then, the reading of the load cell data and the calculation of the oscillation center position are repeatedly performed for each unit time until the measurement time ends. Next, when the measurement time is over,
It is determined whether the measurement is the first measurement (step A).
10) In the case of the first time, the process returns to step A2 again, shifts to the measurement of the center of gravity sway in the closed eye state, and repeats the above processing again.

If it is determined in step A10 that the measurement has been performed for the second time, it is assumed that the measurement of the sway of the center of gravity in the open-eye state and the closed-eye state has been completed, and the distributed pressure in the RAM 11c is calculated in the arithmetic processing unit 11 as described above. Based on the data stored in the storage area e1, the areas of the contact surfaces of the subject's both soles to the detection plate 2 are determined, and the areas of these contact surfaces, the center of the area of the contact surfaces of both feet, and the like are determined (step A1).
1).

The above-mentioned mosaic-like graphic data indicating the load per unit area (pressure distribution) at each coordinate position on the XY coordinates by color, and the load per unit area (pressure distribution) are indicated by contour lines. The created graphic data is created (step A12). Next, the coordinate position of the data stored in the central storage area e2 of the RAM 11c is converted into the XY coordinate position having the origin at the area center determined as described above (step A13).

Then, based on the coordinate-converted data, the center of gravity sway locus, the total locus length, the unit locus length, the unit area locus length, the outer peripheral area, the rectangular area, the effective area, and the average center of the fluctuation at the time of the eye open measurement and the eye closed measurement. Calculate analysis data covering nine items of displacement and oscillation center displacement (step A1).
4). In addition, a graph based on each analysis data and graphic data such as a locus of the center of oscillation are created (step A15).
Then, if necessary, these data are displayed on the display unit 14,
The data is output to the printing unit 15, the floppy drive 17, and the data output terminal 16, and the process ends.

According to the floor reaction force measuring device A of the first example as described above, the center position of the sway is determined from the coordinates on the XY coordinates with the origin at the reference point 2a on the detection plate 2 of the detection base 1. As described above, since the XY coordinate is converted to the XY coordinate having the origin at the center of the area of the contact surface between the detection plate 1 of both feet of the subject obtained from the data of the distributed pressure sensor 4 and the origin, the analysis of the center of the sway is performed.
Data can be analyzed more accurately.

That is, when the position of the subject's foot on the detection base 1 is displaced, the reference point 2a of the detection plate 2 is not necessarily the center of the subject's sole area, and the measurement result is displaced. However, as described above, by using the distributed pressure sensor 4 to find the center of the area of the contact surface with the actual detection plate 2 of the subject, the deviation of the placement position of the subject's foot can be corrected. The data can be analyzed more accurately.

For example, in the center of gravity sway locus, if the position of the center of the area is shifted, it may not be possible to correctly determine which side of the locus is skewed to the front, rear, left and right. Correction based on the actual position of the subject's foot measured by the distributed pressure sensor 4 enables more accurate determination of the imbalance disorder. In addition, in the case of the oscillation center deviation or the oscillation average center deviation, the deviation in the X-axis direction and the Y-axis direction between the reference point 2a and the oscillation center or the oscillation average center is determined. By correcting the point 2a based on the actual placement of the subject's feet, more accurate data can be obtained. Further, based on the above-described analysis result of the body sway, it becomes possible to refer to the distributed pressure data when the sway of the center of gravity is measured when determining the sense of balance, etc., and the accuracy of the determination is improved. be able to.

In the first example, the distributed pressure measurement by the distributed pressure sensor 4 is performed before the measurement of the center of gravity sway, but may be performed after the measurement of the center of gravity sway. Also,
The distribution pressure measurement may be performed for a preset time, and the average value thereof may be obtained. Further, as described above, when measuring the center of oscillation performed every unit time, the distribution pressure may be measured before or after each measurement.

If the distribution pressure is measured in accordance with the measurement of the center of sway as described above, various determinations can be made by associating the fluctuation of the position of the center of sway with the fluctuation of the distribution pressure on the sole of the foot. Can be. For example, it is possible to determine whether or not the distribution pressure at the toe portion of the foot is high when the center of sway comes to the front of the area center.

In the case where the fluctuation center and the distribution pressure are measured for each unit time as described above, for example, the above-described mosaic-like graphic data is created at each measurement time. May be displayed as a moving image. Also, in the first example, the center of gravity sway trajectory, the total trajectory length, the unit trajectory length, the unit area trajectory length, the outer peripheral area, the rectangular area, the effective value area, the oscillating average center displacement and the oscillating center displacement at the time of eye opening measurement and eye closing measurement Although the case where the present invention is applied to nine parameters has been described, this is not limited to the nine parameters. For example, a power spectrum, a position vector, or another parameter such as a velocity vector may be used. Needless to say, it is equally applicable.

In the first example, a total of three load cells 3
The center position of the center of gravity of the subject is detected by using ..., However, the number of the load cells 3 provided is not limited to three, and for example, a total of four load cells 3 are used. The center of gravity of the sample may be detected. In this case, it is preferable that the detection plate 2 is formed in a rectangular shape and the load cells 3 are arranged at four corners thereof. Further, in the first example, the floor reaction force measuring device is mainly used for the purpose of grasping the balance disorder, but the floor reaction force measuring device of the present invention is used in the fields of kinematics, ergonomics, etc. It can be used not only in the case of measuring the center of gravity of the animal, but also in the case of examining the sway of the center of gravity of animals other than humans.

Next, a floor reaction force measuring device according to a second embodiment of the present invention will be described with reference to the drawings. The floor reaction force measuring device of the second example is an application of the present invention to a floor reaction force meter that can also measure a reaction force in a direction along a floor surface. Basically, rehabilitation medicine, physical education and sports In the field of medicine and the like, is used to analyze the walking of the subject, determination of the balance function, and the like, for example, weight distribution during walking, driving force and braking force, weight transferability, torsional force, stride and walking speed, The information on the stability of walking, and the balance of the above-mentioned center of gravity sway meter and the sway when standing upright are obtained.

FIG. 7 is a view showing the appearance of the detection table 20 of the floor reaction force measuring device B of the second example to which the present invention is applied, and FIG. 8 is a basic configuration of the floor reaction force measuring device B of the second example. FIG. As shown in FIGS. 7 and 8, the floor reaction force measuring apparatus B of the second example includes a detection table 20 and a computer system (shown in FIG. 8) 30 for analyzing the measurement results and the like at the detection table 20. Become. As shown in FIG. 7, the detection table 20 is a rectangular flat table having a size that allows the subject to perform some kind of exercise on the spot. In FIG. 7, a cover that covers the side surface of the detection table is not shown.

The detection table 20 is disposed in a state of supporting the detection plate 21 below the four apexes of a substantially rectangular detection plate 21 constituting the upper surface of the detection table 20. , A three-component force load cell 22..., A square sheet-shaped distributed pressure sensor 23, 23 arranged on the upper surface of the detection plate 21 in a divided state, and the distributed pressure sensor 2.
Drive circuits (shown in FIG. 8) for driving the drive circuits 3 and 23
Consists of The three-component load cells 22 are well-known, and measure the reaction force acting on the detection plate 21 by the subject. Each of the three component force load cells 22 has three component force detectors (not shown) built therein, and each component force detector is in the X-axis direction along the short side direction of the detection plate 21. Component, the component force in the Y-axis direction along the long side direction of the detection plate 21, and the component force in the Z-axis direction orthogonal to the detection plate 21 can be detected.

The three-component load cells 22... Continuously detect the reaction force applied in the X-axis, Y-axis, and Z-axis directions at the respective positions, and transmit the detected reaction force information to the computer system 30. Output. The detection plate 21 and the three-component load cells 22 have the same configuration as a well-known floor reaction force meter, and enable measurement of the above-described items during walking, for example.

The output signals indicating the reaction force information from the three-component load cells 22 are input to the input / output interface 31 of the computer system 30. The distributed pressure sensors 23 and 23 have the same configuration as the basic partial pressure sensor 4 of the first example, and are driven by the drive circuit 24 based on a control signal from the computer system 30 to generate the distributed pressure. The sensors 23, 23 convert the pressure at each intersection into a resistance value and output the resistance value as an output signal indicating the distribution pressure information. An output signal indicating pressure information from the distributed pressure sensor 23 is input to the input / output interface 31 of the computer system 30. Note that reference numeral 24
Is a bottom plate of the detection table 20.

The computer system 30 is a well-known computer, and includes an arithmetic processing unit (computer) 32 including a CPU, a RAM, and a ROM (not shown), an input device 33 such as a keyboard and an operation panel, a hard disk drive, Auxiliary storage device 34 such as a floppy disk drive, display device 35 such as a CRT (Cathode Ray Tube) display, printing device 36 such as a printer, and drive circuits 24 and 2 for distributed pressure sensors 23 and 23
And an input / output interface 31 for connecting the computer 32 with the four and three component load cells 22.

The arithmetic processing unit 32 basically has a function of analyzing distributed pressure information input from the distributed pressure sensors 23, 23, and a function of analyzing reaction force information input from the three-component load cells 22. Having. And the arithmetic processing unit 3
2 basically converts a resistance value at each intersection point of the distributed pressure sensors 23, 23 input from the distributed pressure sensors 23, 23 into a load (pressure) per unit area based on a conversion formula obtained in advance. Together with the distributed pressure sensors 23, 23
It has a function of storing the coordinate position of each intersection point above and the value of the load per unit area in the RAM of the arithmetic processing unit 32 in association with each other.

The arithmetic processing unit 32 outputs a control signal to the drive circuits 24, 24 of the distributed pressure sensors 23, 23, for example, every one cycle of processing, and the distributed pressure sensors 23, 2
3 is driven to output the resistance value at each intersection, and for each cycle, the load per unit area derived from the resistance value corresponding to the coordinate position of each intersection as described above is plotted on the time axis. Is stored in the RAM in correspondence with

The coordinate position of each intersection in the distributed pressure sensors 23, 23 is determined by a three-component load cell 22 described later.
The same X as the XY coordinates used to analyze the output signal from
The Y coordinate is used. Further, the arithmetic processing unit 32 obtains a region where the value of the load per unit area at each coordinate position is not 0 at each time of measuring the distributed pressure. The region obtained as described above basically indicates the position of the foot on the detection table 20 of the subject, and since a large number of distributed pressure data are obtained along the time axis as described above, By determining the above-mentioned area for each of these distributed pressure data, it is possible to recognize the movement of the position of the foot along the time axis.

Therefore, when the subject performs a walking exercise on the detection table 20, the position of the foot during walking can be obtained from the above-mentioned numerous distributed pressure data, and the stride, walking speed, and the like are measured. be able to. In addition, the floor reaction force measurement device B of the second example can also measure the center of gravity sway,
In the measurement of the center of gravity sway, the arithmetic processing unit 32 obtains two areas where the value of the load is not 0 when two feet are arranged on the detection plate 21 as in the case of the first example. , The position of the area center of these two regions is determined.

Further, the arithmetic processing unit 32 has a function of creating graphic data in accordance with the above-mentioned load per unit area for each coordinate in accordance with the coordinate position. Create contour line figure data. Further, since the distributed pressure is measured at each processing of one cycle as described above, a large number of graphic data are created along the time axis. It can be displayed on a display device as a moving image.

The arithmetic processing unit 32 collects a large number of the distributed pressure data along the time axis for each coordinate position,
The total value and average value of the loads can be obtained. Further, the arithmetic processing device 32 can obtain a region where the value of each coordinate value is not 0 as one total value or average value as described above, and can measure the distance between the regions. ing. Therefore, not only can the stride be obtained from a large number of distribution pressure data along the time axis as described above, but also the stride and the like can be obtained from the data integrated as described above.

The arithmetic processing unit 32 sequentially receives the reaction force information from each of the four component force detection devices of the four three-component load cells 22.
It is converted into the value of the reaction force in the axial direction and the reaction force in the Z-axis direction. As for the reaction force in the Z-axis direction, similarly to the floor reaction force measurement device A of the first example, the position of the load center (reaction force center in the Z-axis direction) of the subject is calculated in real time, that is, in real time.
Note that the three-component load cell 3 continuously detects the reaction force information and sequentially outputs the reaction force information to the arithmetic processing device 32. The arithmetic processing device 32 outputs the sequentially input reaction force information every one cycle of processing. Processing is performed by sampling.

When calculating the load center position of the arithmetic processing unit 32, the same XY coordinates as those used when indicating the coordinate position of each intersection of the distributed pressure sensor 23 are used. The reaction force in each axial direction and the load center position in each of the three-component load cells 22... Input and converted by the three-component load cells 22 by the arithmetic processing device 32 are stored in the RAM of the arithmetic processing device 32. It is stored.

The arithmetic processing unit 32 performs various analyzes based on the analysis data calculation program read from the auxiliary storage unit 34. At this time, when the subject performs the measurement in the upright posture, similar to the floor reaction force measuring device A of the first example, the XY coordinate position data indicating the load center position stored in the RAM is used as described above. The various analysis data of the nine items can be calculated. In this case, similarly to the first example, the XY coordinates of the XY coordinate position data are converted into XY coordinates having the origin at the area center of the region of both feet in the distributed pressure data obtained by the distributed pressure sensors 23, 23. .

When the subject walks on the detection table 20, for example, the weight distribution during walking as described above,
Data such as driving force, braking force, weight transferability, torsional force, stride length, walking speed, and walking stability are calculated. At this time, data that can be calculated based on the position of the foot, such as the stride length, that is, data obtained from the data from the distributed pressure sensors 23, 23 as described above, Use the obtained value.

Then, the arithmetic processing unit 32 creates graphic data so that the analysis result analyzed as described above can be output, for example, as a graph or the like. And
The analysis result obtained by the arithmetic processing unit 32 and the graphic data created based on the analysis result as described above can be output to the display device 35, the printing device 36, the auxiliary storage device 34, and the like. Next, a method of measuring a reaction force in the floor reaction force measurement device B of the second example will be described with reference to the flowchart of FIG.

First, the measurer inputs the subject information such as the subject's name, gender, age and the like to the arithmetic processing unit 32 through the input device 33. Next, by instructing the arithmetic processing unit 32 to start measurement by the input device 33, measurement by the three-component load cells 22 and the distributed pressure sensor 23 is started (step B1). Further, when measuring the distributed pressure sensor 23, the control signal is output to the drive circuits 24, 24 so as to sequentially scan the resistance value at each intersection and scan the resistance value (step B2).

Then, the resistance value of each intersection output from the distributed pressure sensor 23 is input from the drive circuit to the arithmetic processing unit 32 via the input / output interface 31, and the unit for each coordinate position of each intersection is used as described above. The load is converted into a load per area (distributed pressure) and stored in the RAM of the arithmetic processing unit 32 (step B3). Next, the reaction force information input from each of the component force detectors of each of the three component load cells 22 is sampled, and the sampled reaction force information is converted into a value of the reaction force. Is obtained from the reaction force information from the four three-component load cells 22.

Then, the value of the reaction force in each axial direction and the data of the load center are stored in the RAM of the arithmetic processing unit 32 (step B4). Next, it is determined whether or not the measurement stop is instructed from the input device 33 (step B5). In addition,
If it is instructed to perform the measurement only for the predetermined measurement time, the measurement is performed based on whether or not the timer for measuring the measurement time has reached the predetermined time, instead of the instruction from the input device 33. To determine the suspension. And
If the instruction to stop the measurement has not been input from the input device, the above-described measurement of the distributed pressure and the reaction force is repeatedly performed.

If the stop of the measurement is instructed from the input device 33, the process shifts to a data analysis process to analyze the data of the distribution pressure and the reaction force as described above (step B6). ). Then, the analysis result is output to the display device 35, the printing device 6, the auxiliary storage device 34, and the like based on the instruction from the input device 33, and the process ends. Then, the measurer or the like refers to the analysis results regarding the walking function and other motor functions based on the analysis results output from the display device 35 and the printing device 36.

In this case, unlike the conventional floor reaction force meter, data obtained from the reaction force to the detection plate is used to determine the position of the foot, the shape of the portion of the foot that is in contact with the detection plate, and which portion of the foot. Can be determined with reference to the data of the distribution pressure indicating whether a large load is applied to the walking function, so that it is possible to more easily and clearly determine the walking function and other motor functions. In addition, it is possible to actually measure the stride length, how to open the foot, and the like from the data of the distributed pressure sensor 23, and it is possible to obtain more accurate data.

Although the present invention has been specifically described based on the first and second examples of the embodiment, the present invention is not limited to the above-described first and second examples. Needless to say, it can be appropriately changed without departing from the range. For example, in the first and second examples described above, as the distributed pressure sensors 4 and 23, those that measure the pressure by changing the resistance value are used. However, the distributed pressure sensors 4 and 23 are not limited thereto. Instead, for example, a device that detects a change in capacitance due to a change in the distance between electrodes arranged opposite to each other with an elastic body interposed therebetween can be used.

In addition, as the distributed pressure sensors 4 and 23, those which convert pressure into a change in voltage using a piezoelectric polymer and those which convert pressure into a change in magnetism using silicon rubber and a magnetic dipole are used. One that detects deformation of the elastic body due to pressure by a light reflection pattern, one that uses many small load cells, and the like can be used.

[0091]

According to the floor reaction force measuring device of the first aspect of the present invention, the reaction force measuring means can perform measurement as a normal body sway meter or a floor reaction force meter, and The distribution of pressure on the upper surface of the plate body can be measured simultaneously with the above measurement by the distribution pressure measuring means. And when the pressure distribution on the upper surface of the plate is measured,
Since the pressure applied by the sole of the subject riding on the plate is measured as the pressure at each position corresponding to the resolution of the distributed pressure measuring means, the position of the foot on the plate and the contact with the plate on the sole are measured. It becomes possible to know the shape and the like of the portion that has been made.

When the pressure distribution on the upper surface of the plate is measured, the shape of the portion of the sole in contact with the plate is determined along with the shape of the portion of the sole in contact with the plate. It is possible to know whether the power is mainly applied to, for example, the part of the toe of the foot, the part of the base of the toe,
It is possible to know where the force is applied in the heel part. Therefore, it is possible to determine the equilibrium function, the exercise function, and the like by using both the data as the center of gravity sway meter and the floor reaction force meter and the data as the pressure distribution meter.

That is, the data of the distributed pressure gauge and the data of the gravity center sway meter or the floor reaction force meter which have been separately measured can be measured at once, and the measurement can be saved. Since the data measured by the distribution pressure measuring means and the reaction force measuring means are measured at the same time, unlike the case where the distribution pressure and the reaction force are simply measured separately, two data corresponding to one state of the subject are obtained. The motor function and the balance function can be determined by comparing the two data with each other, and the determination becomes more accurate.

Further, when the above-mentioned reaction force measuring means is used as a center of gravity sway meter, for example, when the deviation of the center of sway is measured, the actual position and the shape of the foot measured by the distributed pressure measuring means are used. Can be calculated. Therefore, when measuring the center of gravity sway as described above, even if the foot is not placed at the correct position corresponding to the reference point of the detection table, it is more based on the center of the actual sole calculated as described above. Accurate analysis results can be obtained. Further, when the reaction force measuring means is used as a reaction force meter, for example, when a walking function is measured, a step length or the like is measured from the actual foot position or foot shape measured by the distributed pressure measuring means. And a more accurate analysis result can be obtained.

According to the floor reaction force measuring device of the second aspect of the present invention, the data analyzing means determines the position of the foot of the subject in the upright posture based on the pressure distribution measured by the distributed pressure measuring means. Based on the data from the reaction force measuring means, using the obtained foot position as a reference, the change in the floor reaction force center point when the subject is in an upright posture is analyzed as a sway of the center of gravity. Accurate analysis can be performed as compared with the case where data is analyzed using the center of the bottom as the reference point of the detection table.

According to the floor reaction force measuring means of the third aspect of the present invention, the data analyzing means responds to the movement of the subject on the plate body based on the pressure distribution measured by the distributed pressure measuring means. As well as determining the position of the foot, based on the data from the reaction force measuring means, the change in the reaction force with respect to the movement of the subject on the plate is analyzed, so it is better to be able to measure the actual foot position such as the stride. A more accurate value can be calculated for a preferable analysis item. Also, for one movement of the subject, two different types of data will be obtained, and by comparing and referencing these data,
It is possible to more clearly determine the motor function and the like.

According to the floor reaction force measuring device of the fourth aspect of the present invention, for example, the trajectory of the center of gravity sway output by the output means and the pressure distribution of the sole can be compared, and the exercise function and the balance function can be obtained. It becomes possible to make a clearer determination.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an appearance of a floor reaction force measuring device according to a first example of an embodiment of the present invention.

FIG. 2 is a block diagram for explaining the floor reaction force measuring device of the first example.

FIG. 3 is a diagram for explaining mosaic-like graphic data using the distribution pressure data of the first example.

FIG. 4 is a diagram for explaining contour-shaped graphic data using the distribution pressure data of the first example.

FIG. 5 is a diagram for explaining graphic data in which the distribution pressure data of the first example and a locus of sway of the center of gravity are superimposed.

FIG. 6 is a flowchart for explaining a method of measuring the center of gravity sway by the floor reaction force measuring device of the first example.

FIG. 7 is a perspective view illustrating an appearance of a detection table of the floor reaction force measuring device according to the second embodiment of the present invention.

FIG. 8 is a block diagram for explaining the floor reaction force measuring device of the second example.

FIG. 9 is a flow chart for explaining a method for measuring a body sway by the floor reaction force measuring device of the second example.

[Explanation of symbols]

 Reference Signs List 2 detection plate (plate) 3 load cell (reaction force measurement means) 4 distributed pressure sensor (distribution pressure measurement means) 11 arithmetic processing unit (data analysis means) 21 detection plate (plate) 22 three-component force load cell (reaction force measurement) Means) 23 distributed pressure sensor (distributed pressure measuring means) 32 arithmetic processing unit (data analyzing means)

Claims (4)

[Claims] 1. A floor reaction force measuring device for measuring a reaction force of a subject on a floor, comprising: a plate body corresponding to a floor on which the subject rides; and a reaction force measuring means for measuring a reaction force of the subject on the plate body. Various analysis data based on the distributed pressure measuring means provided on the upper surface of the plate and for measuring the pressure distribution on the upper surface of the plate by the subject, and the data measured by the reaction force measuring means and the distributed pressure measuring means. A floor reaction force measuring device comprising: a data analysis unit for calculating 2. The reaction force measuring means is capable of measuring the vertical reaction force at at least three points of the plate body, and the data analyzing means is based on the pressure distribution measured by the distributed pressure measuring means. Then, the foot position of the subject in the upright posture is obtained, and the change in the center point of the floor reaction force when the subject is in the upright posture is swayed based on the data from the reaction force measuring means using the obtained foot position as a reference. The floor reaction force measuring device according to claim 1, wherein the floor reaction force measuring device calculates a variety of analytical data as a center of gravity motion meter. 3. The reaction force measuring means is capable of measuring reaction forces in the X and Y directions along the plate surface of the plate body, and the data analyzing means is measured by the distributed pressure measuring means. The position of the foot corresponding to the movement on the plate of the subject is obtained based on the pressure distribution, and the change in the reaction force with respect to the movement of the subject on the plate is calculated based on the reaction force measured by the reaction force measuring means. The floor reaction force measuring device according to claim 1 or 2, which is analyzed. 4. An output means for outputting the analysis result by the data analysis means, wherein the output means is based on the analysis result based on the data from the reaction force measuring means and the data from the distributed pressure measuring means. The floor reaction force measuring device according to claim 1, 2 or 3, wherein both the analysis results are output.