JP2823842B2 - Body sway meter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a center of gravity sway meter, and more particularly, to a center of gravity sway meter having an evaluation function of evaluating a calculation result of a center of gravity based on a normal value.

[0002]

2. Description of the Related Art Conventionally, when measuring the center of gravity of a subject while standing still using a body sway meter, the subject rides on a detection table for measurement for 60 seconds or 30 seconds. It is measuring a fixed time such as.

[0003] In the center of gravity sway meter, the center of gravity calculation result is obtained by predetermined calculation processing from the load data obtained from the detection table within the determined measurement time, and the center of gravity calculation result is classified according to the age of the subject. Had been evaluated.

[0004]

However, in the above-mentioned conventional center of gravity sway meter, when the center of gravity of the subject is measured when the subject is standing still, the subject is placed on a measuring table. Riding the vehicle and measuring a predetermined time, such as 60 seconds or 30 seconds, had the following problems.

That is, when actually measuring a sick person, sometimes the sick person falls down or staggers in the measurement and gets off the detection table. In such a case, it is necessary for the measurer to shorten the previously set measurement time and perform the measurement again, which has been troublesome for the measurer.

In addition, if it is possible to determine whether or not each of the center-of-gravity calculation results obtained before or after the determined measurement time has ended is normal,
Although the labor for performing the measurement again can be omitted, there is no standard for evaluating whether or not the center-of-gravity calculation result obtained before the end of the measurement time is normal.

[0007] In addition, the measurement results after the measurement by the conventional body sway meter have been displayed or printed by numerical values or graphs. However, in the method of outputting these measurement results,
A misjudgment of the measurement result may occur due to misreading of numerical values or misrecognition of a graph (for example, when the graph is displayed small).

An object of the present invention is to prepare a normal value for evaluating the center-of-gravity calculation result in accordance with the measurement time and gender to facilitate evaluation of the center-of-gravity calculation result, and to provide the evaluation result in a normal region, a caution region, and an abnormal region. An object of the present invention is to provide a body sway meter which is divided into regions and notified by a text message.

[0009]

According to the first aspect of the present invention,
A detection table for detecting the load distribution of the subject, measurement time setting means for setting the measurement time of the center of gravity, and within the measurement time set by the measurement time setting means, the load distribution detected by the detection table for the subject. Calculating means for sequentially obtaining the center of gravity as a result of calculating the center of gravity by a predetermined calculation processing; center of gravity storing means for sequentially storing the results of calculating the center of gravity sequentially obtained by the calculating means for each measurement time; and center of gravity sequentially stored in the center of gravity storing means Based on the calculation result, the center of gravity of the subject
Analysis, and the unit of the trajectory length of the movement of the center of gravity within a predetermined range
Analysis means for calculating as the area locus length , in a center of gravity sway meter, a determination standard storage means for storing a determination standard for determining whether or not the unit area locus length is a normal value for each measurement time, for each measurement time. At the time of measurement by the analysis means
Determining means for determining whether or not the unit area trajectory length calculated for each interval is normal based on a criterion stored for each measurement time in the criterion storage means. .

According to the center of gravity sway meter of the present invention, the detection table for detecting the load distribution of the subject, the measuring time setting means for setting the measuring time of the center of gravity, and the measuring time setting means are set by the measuring time setting means. Calculating means for sequentially obtaining the subject's center of gravity from the load distribution detected by the detection table as a center of gravity calculation result by predetermined calculation processing, and calculating the center of gravity calculation results sequentially obtained by the calculating means for each measurement time. a centroid memory means for sequentially storing, based on the sequentially stored centroid calculation result to the centroid storage means, subject the heavy
Analyze the change of the heart and trace the length of the movement of the center of gravity within a predetermined range.
Analysis means for calculating the unit area locus length as the unit area locus length, wherein the unit area
A criterion for determining whether or not the trace length is a normal value is stored in the criterion storage means for each of the measurement times, and the analysis means
The determination unit determines whether the unit area trajectory length calculated for each measurement time is normal based on a criterion stored in the criterion storage unit for each measurement time.

Therefore, each unit determined before the end of the determined measurement time or after the end of the measurement time
Whether or not the area trajectory length is normal can be automatically determined based on a criterion prepared in advance for each measurement time, and the trouble of performing the measurement again can be omitted.

As a result, the work efficiency of the measurer in charge of the sway meter can be improved, and the reliability of the sway meter can be improved.

[0013] The invention according to claim 2 is a detection table for detecting the load distribution of the subject, gender setting means for setting the gender of the subject, measurement time setting means for setting the measurement time of the center of gravity, Within the measurement time set by the measurement time setting means, a calculation means for sequentially obtaining the center of gravity of the subject from the load distribution detected by the detection table as a result of the calculation of the center of gravity by a predetermined calculation processing; A center-of-gravity storage means for sequentially storing the calculated center-of-gravity calculation results according to measurement time and gender; and a change in the center of gravity of the subject based on the center-of-gravity calculation results sequentially stored in the center-of-gravity storage means.
The trajectory length of the movement of the center of gravity within the fixed range is defined as the unit area trajectory length.
Analysis means for calculating
A criterion storage unit that stores a criterion for determining whether the unit area locus length is a normal value for each measurement time by the measurement time and gender, and a measurement time by the analysis unit.
Determining means for determining whether or not the separately calculated unit area locus length is normal based on the determination criteria stored by the measurement time and sex in the determination criteria storage means. And

According to the gravity center sway meter of the present invention, a detection table for detecting the load distribution of the subject, gender setting means for setting the gender of the subject, and a measurement time setting for setting the measurement time of the center of gravity. Means, and within the measurement time set by the measurement time setting means, detected by the detection table.
Calculating means for sequentially obtaining the center of gravity of the subject from the load distribution as a result of calculating the center of gravity by predetermined calculation processing; center of gravity storing means for sequentially storing the results of the center of gravity calculation sequentially obtained by the calculating means according to measurement time and gender; Based on the center-of-gravity calculation results sequentially stored in the storage means, the weight of the subject
Analyze the change of the heart and trace the length of the movement of the center of gravity within a predetermined range.
Analysis means for calculating the unit area locus length as the unit area locus length, wherein the unit area
Determination reference mark length is whether normal value is stored by said measuring Hourly and gender criterion storing means, the solution
The unit area locus calculated for each measurement time by the analyzing means
The determination unit determines whether the length is normal based on the determination criteria stored in the determination reference storage unit according to the measurement time and the gender.

Therefore, each unit determined before the end of the determined measurement time or after the end of the measurement time
Whether or not the area locus length is normal can be automatically determined based on determination criteria prepared in advance for each measurement time and for each gender, so that it is not necessary to perform measurement again.

As a result, the work efficiency of the measurer in charge of the sway meter can be improved, and the reliability of the sway meter can be improved.

According to a third aspect of the present invention, there is provided a detection table for detecting a load distribution of a subject, gender setting means for setting the gender of the subject, measurement time setting means for setting a measurement time of the center of gravity,
Within the measurement time set by this measurement time setting means,
Calculating means for sequentially obtaining the center of gravity of the subject as a result of calculating the center of gravity from the load distribution detected by the detection table as a result of calculating the center of gravity by a predetermined processing; A change in the center of gravity of the subject is analyzed based on the center of gravity storage means and the center of gravity calculation results sequentially stored in the center of gravity storage means.
The trajectory length of the center of gravity movement within the enclosure is calculated as the unit area trajectory length.
Analyzing means for output, in sway equipped with a unit area locus length of time measured separately the center of gravity is stored by the measurement hourly and gender determination criterion whether normal value criterion storing means Is stored in the determination criterion storage means.
Deviation from the criteria stored by time measurement and gender
Divides the normal area, attention area, and abnormal area based on
Evaluation criteria calculation means for calculating an evaluation criterion value, the evaluation group
Based on the evaluation reference value calculated by the reference value calculation means
The unit surface for each measurement time calculated by the analysis means.
Find out which area the product trajectory length is divided into
Thus, there is provided an evaluation means for evaluating whether the area is a normal area, a caution area, or an abnormal area, and an evaluation notifying means for notifying the area evaluated by the evaluation means by predetermined document data. .

According to the gravity center sway meter of the present invention, a detection table for detecting the load distribution of the subject, gender setting means for setting the gender of the subject, and a measuring time setting for setting the measuring time of the center of gravity. Means, and within the measurement time set by the measurement time setting means, detected by the detection table.
Calculating means for sequentially obtaining the center of gravity of the subject from the load distribution as a result of calculating the center of gravity by predetermined calculation processing; center of gravity storing means for sequentially storing the results of the center of gravity calculation sequentially obtained by the calculating means according to measurement time and gender; Based on the center-of-gravity calculation results sequentially stored in the storage means, the weight of the subject
Analyze the change of the heart and trace the length of the movement of the center of gravity within a predetermined range.
Analysis unit that calculates the unit area locus length as a unit area locus length , wherein a criterion for determining whether the unit area locus length of the center of gravity is a normal value for each measurement time is determined by the criterion storage unit. Stored by time and gender,
This judgment criterion storage means is stored by measurement time and gender.
Means for calculating an evaluation criterion value based on the deviation from the judgment criterion.
The evaluation that distinguishes the normal area, the attention area, and the abnormal area
The reference value is calculated, and the evaluation reference value calculating means calculates the reference value.
Based on the calculated evaluation reference value,
The unit area trajectory length for each calculated measurement time is
By examining which area is more divided,
Whether the area is a normal area, a caution area, or an abnormal area is evaluated, and the fact that the area is evaluated by the evaluation means is notified by predetermined document data.

Therefore, each unit determined before the end of the determined measurement time or after the end of the measurement time
Area locus length is normal, attentional, or abnormal
Whether there was previously prepared measurement time and by gender criteria
Normal area, attention area, calculated based on the deviation from
Based on the evaluation standard value for classifying the abnormal area,
By examining to which area the trace length is divided
Thus, the determination can be made automatically, and the trouble of performing the measurement again can be saved.

Further, the measurement results after the measurement by the conventional body sway meter have been displayed or printed by numerical values or graphs. However, in the method of outputting these measurement results,
Although there was a risk of misjudgment of the measurement results due to misreading of numerical values or misrecognition of the graph (when the graph was displayed in a small size, etc.), in the present embodiment, the evaluation result of the center of gravity data is described in clear document data. Since the display or printing is performed by the user, the determination error can be prevented.

As a result, the work efficiency of the measurer in charge of the sway meter can be improved, and the reliability of the sway meter can be improved.

In these cases, as in the invention as set forth in claim 4, in the center of gravity sway meter according to claim 1, 2, or 3, the criterion prepared for each measurement time, or each measurement time and gender, , Based on measurement conditions such as the gender, age, and measurement time of the subject , calculate by measurement time, or by measurement time and gender, from the previously measured centroid data group.
It is effective that the length of the unit area locus is given.

According to the fourth aspect of the present invention, the judgment criteria prepared for each measurement time, or each measurement time and gender, are based on measurement conditions such as the gender, age, and measurement time of the subject. , Measurement time from the pre-measured centroid data group
Unit area calculated by gender, gender, or gender
The trajectory length .

Therefore, according to the measurement time or at the time of measurement
Criterion which is prepared by and sex between, because the age and sex is determined based on the centroid data group obtained from a number of different subjects, obtained from the centroid calculation results stored within the valid measurement time Format for evaluating unit area locus length
The fixed standard is sufficiently reliable, and the center-of-gravity data analysis processing is sufficiently reliable.

[0025]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 to FIG. 16 are views showing an embodiment of a center of gravity sway meter to which the present invention is applied.

First, the configuration will be described.

FIG. 1 is a block diagram showing the main configuration of the center of gravity sway meter according to the present embodiment. In FIG. 1, the sway meter 1 includes a detection table 2, a signal amplifier 3, an A / D converter 4, an arithmetic device 5, a display device 6, and a printing device 7.

The detection table 2 is provided with load sensors S1 to S3 for detecting a load at each vertex when the subject is put on the detection table 2, and is detected by the load sensors S1 to S3. Each load is output to the signal amplifier 3 as a load detection signal.

The signal amplifier 3 amplifies each load detection signal to a predetermined level and converts the load detection signal input from the detection table 2 to a signal level that can be processed by each subsequent block. 4 is output.

The A / D converter 4 converts each load detection signal inputted from the signal amplifier 3 into digital data which can be processed by the arithmetic unit 5, and converts each load detection signal into predetermined load data. The data is converted and output to the arithmetic unit 5.

The arithmetic unit 5 has a CPU (Central)
Processing Unit), ROM (Read)
Only M-memory), RAM (Random
Access Memory), a hard disk, and the like, and have the functions shown in FIGS. FIG.
FIG. 2 is a diagram showing a functional configuration of the arithmetic unit 5. In FIG. 2, the arithmetic unit 5 detects a load from each load data input from the A / D converter 4 and a load detection function for detecting each load. The center of gravity calculation function for calculating the center of gravity from the distribution of each load, the center of gravity calculation result storage function for storing the calculated center of gravity calculation result, the analysis function for analyzing the stored center of gravity calculation result, and the analysis result It has a display function for displaying on the display device 6 and a printing function for printing this analysis result on the printing device 7.

FIG. 3 is a diagram showing details of the analysis function of FIG. In FIG. 3, the arithmetic unit 5 takes in the center-of-gravity calculation result stored in the RAM, extracts an evaluation parameter for each measurement time stored in advance in the hard disk, and a function of extracting the evaluation parameter. among, the selection function of the evaluation reference value for selecting an evaluation reference value corresponding to the gravity center calculation results taken previously determined from the centroid calculation result based on the selected criteria value
And an evaluation execution function for executing an evaluation of the unit area locus length to be performed.

When measuring the center of gravity, the arithmetic unit 5 sets the designated measurement time (T: 10 seconds, 20 seconds, 30 seconds, 60 seconds).
If the subject gets off the detection table 2 in the middle of (second), a later-described center-of-gravity data analysis process for extracting and evaluating valid data from data obtained during the measurement time up to that point is executed. That is, the designated measurement time (T: 10 seconds, 20
Seconds, 30 seconds, and 60 seconds) and based on the evaluation parameters prepared in advance for each gender, whether or not the center-of-gravity calculation result calculated during the measurement time or until the end of the measurement time is normal, The evaluation result is divided into a normal area, a caution area, and an abnormal area, and is notified by a document message.

As the display device 6, a CRT (Cathode Ra) is used.
y Tube) is used, and an analysis result obtained by analyzing the calculation result of the center of gravity by the calculation device 5 is displayed. The printing device 7 prints an analysis result obtained by analyzing the center-of-gravity calculation result by the calculation device 5, and the like.

Next, the operation of this embodiment will be described.

First, the center-of-gravity data analysis processing executed by the arithmetic unit 5 will be described with reference to the flowcharts shown in FIGS.

In the center-of-gravity data analysis processing described below, the subject on the detection table 2 is a man or a woman, and the center of gravity measurement conditions include open eyes (with eyes open),
When the foot is closed (in a state where both feet are closed and standing still) and the sampling frequency of the center of gravity value is set to 20 Hz, the measurement time is, for example,
It is assumed that the settings are 10 seconds, 20 seconds, 30 seconds, and 60 seconds.

The load of the subject on the detection table 2 is measured for a specified measurement time (T: 10 seconds, 20 seconds, 30 seconds, 60 seconds).
(Seconds), when the load sensors S1 to S3 detect the load detection signal at predetermined time intervals and output the load detection signal to the signal amplifier 3, the signal is amplified to a predetermined level and sequentially output to the A / D converter 4. In the A / D converter 4, since each load detection signal sequentially input from the signal amplifier 3 is A / D converted into digital data that can be processed by the arithmetic unit 5, each load detection signal is converted into predetermined load data. Are sequentially output to the arithmetic unit 5.

In FIG. 4, load values are fetched from load data sequentially input from the A / D converter 4, and
Whether the load value is valid or not is determined based on whether or not the weight of the subject at the start of measurement is 30% or more. If the load value is valid, the center of gravity is calculated from the load distribution and stored in the RAM, and the time (T) from the start of the measurement until the load value is taken is recorded. Next, it is determined whether or not the measurement time has ended based on whether or not the subject has got off the detection table 2 during the designated measurement time.

If the measurement time has not expired, that is,
If the subject is on the detection table 2, the process returns to the load value capturing process. When the measurement time has ended, that is, when the subject has got off the detection table 2 during the designated measurement, the measurement time (T) until the measurement is completed is determined (step S1). If the result of the determination of the measurement time (T) is shorter than 10 (T <10 seconds), it is determined that the measurement has failed, and the process proceeds to step S20 in FIG. 5 (step S2), and the measurement has failed. Is displayed on the display device 6,
Alternatively, printing is performed from the printing device 7.

The time until the end of the measurement is “10”.
If it is not less than "seconds" and less than "20 seconds" (10 seconds≤T <20 seconds), it is determined that the center-of-gravity calculation result stored in the RAM by the measurement time of 10 seconds is valid (step S3).
The evaluation parameters corresponding to the measurement time of 10 seconds are extracted from the evaluation parameters for each measurement time and for each sex stored in the hard disk in advance, and the reference values of the men and women plotted by age are selected in the evaluation parameters. Then (step S4), the process proceeds to step S11.

When the time until the end of the measurement is equal to or longer than “20 seconds” and shorter than “30 seconds” (20 seconds ≦ T <30 seconds), the center-of-gravity calculation recording result stored in the RAM before the measurement time of 20 seconds. Is determined to be valid (step S5). And
The evaluation parameters corresponding to the measurement time of 20 seconds are extracted from the evaluation parameters for each measurement time and for each sex stored in the hard disk in advance, and the reference values of the men and women plotted by age are selected in the evaluation parameters. Then (step S6), the process proceeds to step S11.

If the time until the end of the measurement is equal to or longer than “30 seconds” and shorter than “60 seconds” (30 seconds ≦ T <60 seconds), the center-of-gravity calculation recording result stored in the RAM before the measurement time of 30 seconds. Is determined to be valid (step S7). And
The evaluation parameters corresponding to the measurement time of 30 seconds are extracted from the evaluation parameters for each measurement time and for each sex stored in the hard disk in advance, and the reference values of the male and female plotted by age are selected in the evaluation parameters. Then (step S8), the process proceeds to step S11.

The time until the end of the measurement is "60 seconds".
(T = 60 seconds), R
The center-of-gravity calculation recording result stored in the AM is determined to be valid (step S9). Then, an evaluation parameter corresponding to the measurement time of 60 seconds is extracted from the evaluation parameters for each measurement time and for each sex stored in the hard disk in advance, and the reference values of the genders plotted by age in the evaluation parameters are extracted. Is selected (Step S10), and the routine goes to Step S11.

Next, in step S11, it is determined whether the subject is male or female. If the subject is a male, the male reference value is selected from the male and female reference values selected in steps S4, S6, S8, and S10 (step S1).
2). If the subject is a female, the female reference value is selected from the male and female reference values selected in steps S4, S6, S8, and S10 (step S13). Next, the male reference value or the female reference value selected based on the measurement time and gender is determined as a determination reference (step S14).

FIGS. 6 to 13 show specific examples of evaluation parameters when the effective measurement time is 60 seconds.

FIG. 6 shows the unit time trajectory length (measurement conditions: male, eyes open, foot closed, sampling frequency: 20 Hz, measurement time: 60 seconds), measured for each age range shown in the table. The average value of “average + 2SD (standard deviation)”, “average + SD”, “average”, “average−SD”,
It is the table | surface calculated | required as "average-2SD". The graph shown in FIG. 7 is obtained by plotting each value in the table of FIG.

FIG. 8 shows the unit time trajectory length (measurement conditions: female, eye open, foot closed, sampling frequency: 20H
z, measurement time: 60 seconds) were measured for each age frame shown in the table, and the average of the measured values was “average + 2SD (standard deviation)”, “average + SD”, “average”, “average−”. S
D "and" Average-2 SD ". The graph shown in FIG. 9 is obtained by plotting the values in the table of FIG.

FIG. 10 shows the unit area locus length (measurement conditions: male, eyes open, foot closed, sampling frequency: 20H
z, measurement time: 60 seconds) were measured for each age frame shown in the table, and the average of the measured values was “average + 2SD (standard deviation)”, “average + SD”, “average”, “average−”. S
D "and" Average-2 SD ".
Is a plot of each value in the table of FIG.

FIG. 12 shows the unit area locus length (measurement conditions: female, eye open, foot closed, sampling frequency: 20H
z, measurement time: 60 seconds) were measured for each age frame shown in the table, and the average of the measured values was “average + 2SD (standard deviation)”, “average + SD”, “average”, “average−”. S
D "and" Average-2 SD ".
Is a plot of each value in the table of FIG.

Therefore, if the measurement conditions are, for example, “time: 60 seconds”, “sex: male”, and “age: 40 years”, the unit time trajectory shown in FIG. It is determined from the table of lengths or the table of unit area locus lengths in FIG. If the measurement conditions are, for example, “time: 60 seconds”, “sex: female”, and “age: 30 years old”, the table of unit time locus length in FIG. 8 or the table of unit area locus length in FIG. Is determined from

Then, a reference value (X) and a standard deviation (SD) are calculated from the center-of-gravity calculation results recorded according to the measurement conditions of the measurement time, sex, and age (step S15). Then, the calculated reference value (X) and standard deviation (SD)
Is compared with each reference value for each measurement time and for each gender determined as the determination reference in step S14 as (Y), and is compared with the normal region (X−SD <Y <X + SD) or the attention region (X−2SD).
<Y ≦ X-SD or X + SD ≦ Y <X + 2SD)
Or abnormal region (Y ≦ X−2SD or Y ≧ X + 2S
D) is determined (step S16).

The result of the judgment based on the calculated reference value (X) and standard deviation (SD) is “normal region (X−SD <Y
<X + SD) ”(step S17), the fact that the region is a normal region is indicated by a document“ ◇ normal region ”as shown in FIG.
####is. There is no problem in particular. "", The image is displayed on the display device 6 or printed from the printing device 7 (step S20), and the process is terminated.

Also, the result of the judgment based on the calculated reference value (X) and standard deviation (SD) is "Caution region (X-2S
D <Y ≦ X-SD or X + SD ≦ Y <X + 2S
D) ”(step S18), it indicates that the area is the attention area, and“ ◇ attention area ”as shown in FIG. 15“ The value of **** in your body sway test is ######. It is slightly larger / smaller than the normal value. We recommend that you undergo a thorough inspection. "", The image is displayed on the display device 6 or printed from the printing device 7 (step S20), and the process is terminated.

Further, the result of the judgment based on the calculated reference value (X) and standard deviation (SD) is “abnormal area (Y ≦ X−
2SD or Y ≧ X + 2SD) ”(step S19), the fact that the region is an abnormal region is indicated by a document“ “The value of **** in your body sway test is ######” as shown in FIG. # Significantly deviates from the normal value, and the body sway is seen. Please consult a specialist. "
(Step S20), and the process ends.

Note that “****” in each document data of FIGS. 14 to 16 contains “measurement items (eg, trajectory length, envelope area, etc.)” and “######”. Contains the actual measured value.

As described above, in the center of gravity sway meter 1 of the present embodiment, the specified measurement time (10 seconds, 20
Seconds, 30 seconds, and 60 seconds) and for each gender (male / female) based on the center-of-gravity calculation result calculated during the center-of-gravity measurement.
Evaluate the path length of the movement of the center of gravity within a predetermined range indicating the change of the heart.
The evaluation parameters to be evaluated are stored in the hard disk in advance, and the arithmetic unit 5 determines the valid time for which the load value has been measured so far in four stages of 10 seconds, 20 seconds, 30 seconds, and 60 seconds. from the center of gravity calculation results stored in a valid time
In order to determine whether the calculated unit area locus length is normal or not, while selecting the corresponding reference value for each gender from the measurement time and the evaluation parameters for each gender,
The determination criterion (Y) is determined from the evaluation parameters according to the measurement conditions (measurement time, gender), and the reference value (X) and the standard deviation (SD) are obtained from the center-of-gravity calculation result.
And standard deviation (SD) are evaluated based on the criterion (Y), and the evaluation result is divided into a normal region, a caution region, and an abnormal region, and is notified by a document message. In the case where is dropped from the detection table, it is possible to omit that the measurer performs the measurement again, and the work load on the measurer can be reduced.

That is, each unit surface obtained before the end of the determined measurement time or after the end of the measurement time
Whether or not the product trajectory length is normal can be automatically determined based on the evaluation parameters prepared in advance for each measurement time and for each gender, so that it is not necessary to perform the measurement again.

The measurement results after the measurement by the conventional body sway meter have been displayed or printed by numerical values or graphs. However, in the method of outputting these measurement results,
Although there was a risk of misjudgment of the measurement results due to misreading of numerical values or misrecognition of the graph (when the graph was displayed in a small size, etc.), in the present embodiment, the evaluation result of the center of gravity data is described in clear document data. Since the display or printing is performed by the user, the determination error can be prevented.

As a result, the work efficiency of the measurer in charge of the sway meter can be improved, and the reliability of the sway meter can be improved.

In the above-described embodiment, in the effective data analysis processing, the subjects on the detection table 2 are male / female, and the conditions for measuring the center of gravity are as follows: open eyes (opened eyes), closed feet ( With both feet closed and standing still), the sampling frequency of the center of gravity value was set to 20 Hz, and the measurement time was set to, for example, 10 seconds, 20 seconds, 30 seconds, and 60 seconds.
It goes without saying that the center of gravity sway meter of the present invention can be applied even if the center of gravity measurement conditions are other.

The tables and graphs shown in FIGS. 6 to 13 are merely examples, and different tables and graphs can be obtained according to women and changes in measurement conditions. Based on these different tables and graphs, FIG. The center-of-gravity calculation result measured and calculated under the same different measurement conditions can be evaluated.

The tables and graphs shown in FIGS. 6 to 13 are obtained based on the center-of-gravity measurement data measured from many subjects, and the center-of-gravity calculation evaluated in the present embodiment is performed. The result is sufficiently reliable, and the above-mentioned constant valid data analysis processing is sufficiently reliable.

According to the gravity center sway meter of the first aspect of the present invention, it is determined whether or not each unit area trajectory length obtained before the end of the determined measurement time or after the end of the measurement time is normal. Can be automatically determined on the basis of a determination criterion prepared in advance for each measurement time, and the trouble of performing the measurement again can be omitted.

According to the gravity center sway meter of the present invention, it is determined whether or not each unit area trajectory length obtained before the end of the determined measurement time or after the end of the measurement time is normal. Can be automatically determined based on determination criteria prepared in advance for each measurement time and for each gender, and the need to perform measurement again can be saved.

As a result, the work efficiency of the measurer in charge of the sway meter can be improved, and the reliability of the sway meter can be improved.

According to the gravity center sway meter of the present invention, the unit area trajectory length obtained before the end of the determined measurement time or after the end of the measurement time is a normal area.
Area, attention area, or abnormal area is determined based on the measurement time and the deviation from the judgment standard prepared for each gender.
The normal, attention, and abnormal areas calculated by
Based on the evaluation reference value,
By checking whether or not the measurement is performed, the determination can be made automatically, and the trouble of performing the measurement again can be saved.

The measurement results after the measurement by the conventional body sway meter have been displayed or printed by numerical values or graphs. However, in the method of outputting these measurement results,
Although there was a risk of misjudgment of the measurement results due to misreading of numerical values or misrecognition of the graph (when the graph was displayed in a small size, etc.), in the present embodiment, the evaluation result of the center of gravity data is described in clear document data. Since the display or printing is performed by the user, the determination error can be prevented.

As a result, the work efficiency of the measurer in charge of the sway meter can be improved, and the reliability of the sway meter can be improved.

According to the center of gravity sway meter according to the fourth aspect of the present invention, it is possible to prepare for each measurement time, or each measurement time and gender.
Criterion is to be, for age and sex is determined based on the centroid data group obtained from a number of different subjects, obtained from the centroid calculation results stored within the valid measurement time single
The criterion for evaluating the area locus length is sufficiently reliable, and the center-of-gravity data analysis processing is sufficiently reliable.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a main configuration of a center of gravity sway meter according to an embodiment of the present invention.

FIG. 2 is a diagram showing a functional configuration of an arithmetic unit 5 in FIG. 1;

FIG. 3 is a diagram showing details of an analysis function block in FIG. 2;

FIG. 4 is a flowchart showing a part of a center-of-gravity data analysis process executed by the arithmetic unit 5 of FIG. 1;

FIG. 5 is a flowchart of the center-of-gravity data analysis processing continued from FIG. 4;

6 is a diagram illustrating a measurement time 60 used when a measurement time of up to 60 seconds is effective in the barycenter data analysis processing of FIG. 4;
The figure which shows an example of the table | surface of the reference value which evaluates the unit time locus length for seconds and men.

FIG. 7 is a view showing a graph in which values in the table of FIG. 6 are plotted.

8 is a diagram illustrating a measurement time 60 used when a measurement time of up to 60 seconds is valid in the center-of-gravity data analysis processing of FIG. 4;
The figure which shows an example of the table of the reference value which evaluates the unit time locus length for seconds and women.

FIG. 9 is a view showing a graph in which values in the table of FIG. 8 are plotted.

FIG. 10 shows a measurement time 6 used when a measurement time of up to 60 seconds is effective in the center-of-gravity data analysis processing of FIG.
The figure which shows an example of the table | surface of the reference value which evaluates 0 second and the unit area locus | trajectory length for men.

11 is a view showing a graph in which values in the table of FIG. 10 are plotted.

FIG. 12 shows a measurement time 6 used when a measurement time of up to 60 seconds is made valid in the center-of-gravity data analysis processing of FIG.
The figure which shows an example of the table | surface of the reference value which evaluates 0 second and the unit area locus length for women.

FIG. 13 is a diagram showing a graph in which values in the table of FIG. 12 are plotted.

FIG. 14 is a diagram showing an example of document data displayed / printed when it is determined that the region is a normal region in the process of determining the center of gravity data in the center of gravity data analysis process of FIG. 5;

FIG. 15 is a diagram showing an example of document data displayed / printed when it is determined to be an attention area in the process of determining the center of gravity data in the process of analyzing the center of gravity data of FIG. 5;

FIG. 16 is a view showing an example of document data displayed / printed when it is determined that the area is abnormal in the processing of determining the center of gravity data in the center of gravity data analysis processing of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gravity center sway meter 2 Detecting stand 3 Signal amplifier 4 A / D converter 5 Arithmetic unit 6 Display unit 7 Printing device S1-S3 Load sensor

Claims (4)

(57) [Claims] 1. A detecting table for detecting a load distribution of a subject, a measuring time setting means for setting a measuring time of a center of gravity, and a measuring time set by the measuring time setting means,
Calculating means for sequentially obtaining the center of gravity of the subject from the load distribution detected by the detection table as a result of calculating the center of gravity by predetermined calculation processing; and center of gravity storing means for sequentially storing the results of the center of gravity calculation sequentially obtained by the calculating means for each measurement time And analyzing the change in the center of gravity of the subject based on the center of gravity calculation results sequentially stored in the center of gravity storage means, and calculating the weight within a predetermined range.
Analyzing means for calculating a trajectory length of the movement of the heart as a unit area trajectory length, in sway meter wherein the the measuring time determination reference time measured separately unit area trajectory length is whether normal A criterion storage unit to be stored separately, and the unit surface calculated for each measurement time by the analysis unit
Determining means for determining whether or not the product trajectory length is normal based on a criterion stored in the criterion storage means for each measurement time; 2. A detection table for detecting a load distribution of a subject, gender setting means for setting the gender of the subject, measurement time setting means for setting a measurement time of the center of gravity, and measurement set by the measurement time setting means. In time,
Calculating means for sequentially obtaining the center of gravity of the subject from the load distribution detected by the detection table as a result of calculating the center of gravity by a predetermined calculation process; and the results of the center of gravity calculation sequentially obtained by the calculating means are sequentially stored by measurement time and sex. A change in the center of gravity of the subject is analyzed based on the center-of-gravity calculation means sequentially stored in the center-of-gravity storage means.
Analyzing means for calculating a trajectory length of the movement of the heart as a unit area trajectory length, in sway meter wherein the the measuring time determination reference time measured separately unit area trajectory length is whether normal A judgment criterion storage means for storing by unit and gender; and the unit plane calculated for each measurement time by the analysis means.
Determining means for determining whether or not the product trajectory length is normal on the basis of the determination criteria stored in the determination reference storage means according to measurement time and gender. 3. A detection table for detecting the load distribution of the subject, gender setting means for setting the gender of the subject, measurement time setting means for setting the measurement time of the center of gravity, and measurement set by the measurement time setting means. In time,
Calculating means for sequentially obtaining the center of gravity of the subject from the load distribution detected by the detection table as a result of calculating the center of gravity by a predetermined calculation process; and the results of the center of gravity calculation sequentially obtained by the calculating means are sequentially stored by measurement time and sex. A change in the center of gravity of the subject is analyzed based on the center-of-gravity calculation means sequentially stored in the center-of-gravity storage means.
Analysis means for calculating the trajectory length of the movement of the heart as a unit area trajectory length , wherein the center of gravity sway meter comprises: a measurement criterion for determining whether the unit area trajectory length is a normal value for each of the measurement times. A criterion storage means for storing by gender and gender; and a criterion storage means for storing by measurement time and gender.
Based on the deviation from the criteria,
Evaluation base for calculating evaluation reference values for classifying areas and abnormal areas
Quasi-value calculating means and an evaluation reference value calculated by the evaluation criterion value calculating means
Is calculated for each measurement time by the analysis means based on
And unit area trajectory length is adjusted to be divided into any area Luke
The evaluation means for evaluating whether the area is a normal area, a caution area, or an abnormal area, and an evaluation notifying means for notifying the area evaluated by the evaluation means with predetermined document data. Characteristic center of gravity sway meter. 4. The judgment criterion prepared for each measurement time, or each measurement time and gender, is based on measurement conditions such as the gender, age, and measurement time of the subject, and is based on a measurement time from a centroid data group measured in advance. Separate or by measurement time and gender
4. The center of gravity sway meter according to claim 1 , wherein the unit area trajectory length is calculated separately .