JP2004344433A - System for diagnosing equilibratory sense, and apparatus used therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an environment for anyone to receive diagnosis in any place and at any time concerning an abnormality in equilibratory sense by allowing an equilibratory sense diagnosing apparatus and its system to be portable in size and weight and also widening a range of a usage place and a usage method. <P>SOLUTION: At least a movement sensor 10 and a movement storage means 18 for temporarily storing a signal which expresses a movement from the movement sensor 10 are mounted on the body of a user. After a movement state is temporarily recorded in the movement storage means 18, the input of a movement diagnosing means 12 is connected to the output of the movement storage means 18, so as to acquire a diagnostic result output by the system. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a system for supporting diagnosis of medical findings related to a sense of equilibrium function by acquiring motion information such as body sway and tilt made unconsciously, which is mounted on a user's body, and an apparatus used therefor. About. This system is effective for diagnosing not only a disease of equilibrium sensation function but also a dysfunction state, for example, a fatigue state.
[0002]
[Prior art]
In the diagnosis of equilibrium disorder including dizziness, for example, Japanese Unexamined Patent Application Publication No. 8-215176 discloses an unconscious method by measuring the distribution of weight applied to the soles of a user with time while standing straight. There is known an inspection device and system called a body sway meter that analyzes the movement of a human body (Patent Document 1).
[0003]
In this system, the user rides on a device similar to a household scale and measures the distribution of forces acting on the horizontal surface of the scale with a force sensor such as a strain gauge. Diagnosis can be performed just by standing.
[0004]
What is measured with this device is the temporal fluctuation of the position of the center of gravity of the body estimated from the distribution of the force applied to the soles. and in the closed state of the eyes, whether pre what movement pattern is detected for a person having a characteristic disease involving normal subjects as well as the equilibrium impairment leave measures, when a new movement pattern is input The balance sensory function diagnosis is realized by statistically identifying the state in which the data is closest to data by a person.
[0005]
The system and diagnostic method using this method are described in the interpretation of the medical score table for medical insurance fees issued by the Ministry of Health, Labor and Welfare (Ministry of Health, Labor and Welfare at the time of issuance) (March 16, 1994, Insurance 25). It is used for diagnosis in insurance medical institutions.
[0006]
[Patent Document 1]
JP-A-8-215176
[0007]
[Problems to be solved by the invention]
In the conventional equilibrium function diagnosis, the user stands on a horizontal surface of a device such as a weight scale to measure the distribution of weight applied to the sole, so that the device can be standing on at least both feet. It is necessary to secure only the area as a horizontal plane. In addition, since it is necessary to detect a small movement (typically, a moving distance of the center of gravity of about several millimeters) generated unconsciously while enduring a weight of at least several tens of kilograms, it is currently used. When using sensors such as strain (strain) gauges, it is essential that the inspection device has some weight.
[0008]
In other words, it is necessary to prevent the device from being damaged by weight, and at the same time, configure the horizontal surface with a material that bends reversibly with good reproducibility according to the weight.A heavy metal plate is used as such a material. Normal.
[0009]
Furthermore, due to the nature of the device that measures the weight distribution, it is desirable that gravity acts vertically on the horizontal plane on which the user rides, and the installation position of the measuring device is calibrated in advance on the horizontal plane against gravity. There is a need.
[0010]
As described above, it is very difficult to use the conventional equilibrium sensation function diagnostic apparatus while carrying it on a daily basis, from the viewpoints of the size and weight of the apparatus and restrictions on the installation location. Also, due to the principle of the device, it is impossible to use it in a place without gravity.
[0011]
Furthermore, in the diagnostic device according to the prior art, the user must be able to stand on both feet for at least a certain period of time, for example, 30 seconds to 60 seconds. For this reason, the diagnosis can be made only for those who can stand upright on both feet, but it is difficult to maintain the standing position for a long time due to impaired balance function and other medical conditions. It is a diagnostic method that cannot be used for people who have difficulty in measurement at a computer.
[0012]
As described above, in the equilibrium sensation diagnostic apparatus according to the conventional technology, anybody can use it anytime, anywhere, and receive a diagnosis easily.
[0013]
Accordingly, the present invention has been made to solve these problems, and the diagnostic device has a portable size and weight, and at the same time, the place of use and the method of use have been extremely widely compared with those of the prior art. The aim is to provide an environment where anyone can get a diagnosis of dysbalance anytime, anywhere, by spreading it.
[0014]
[Means for Solving the Problems]
In the prior art, the user stands on a device such as a weighing scale, and performs a diagnosis related to abnormal balance sensation on the principle of measuring the distribution of gravity acting on the sole, but in the present invention, To measure so-called “vertigo” caused by abnormal balance sensation, which is observed as movement in a characteristic location on the body such as the user's head and waist, and to measure these movements Motion sensor means is used. In addition, a motion diagnostic unit that processes a signal from the motion sensor unit and gives an appropriate diagnosis result is also used.
[0015]
Also, in a configuration in which the motion diagnostic means is physically separated from the motion sensor means, such as when the motion diagnostic means is not carried, a motion memory for temporarily storing a signal from the motion sensor means using a storage element such as a semiconductor memory. By carrying the means together with the motion sensor means, it is also possible to adopt a configuration in which the diagnosis is carried out by the user carrying only a smaller and lighter device.
[0016]
That is, the present invention is a balance sense function diagnosis system including a portable terminal unit that is portablely mounted on a user's body, and an analyzer that analyzes data from the portable terminal unit. The terminal includes motion sensor means for detecting a motion of the user's body, and the analyzer processes a signal from the motion sensor means and performs a diagnosis of a sense of equilibrium function based on motion diagnostic information recorded in advance. It is an object of the present invention to provide a balance sensation function diagnosis system which comprises a diagnosis means and is configured to analyze the movement of the user and output diagnostic information on the balance sensation function.
[0017]
Here, the “motion detection” is for detecting a characteristic motion appearing in a disease or a decrease in a sense of balance, for example, a speed of a linear motion, an acceleration, and various rotations around a rotation center axis. There are angular velocities and the like.
[0018]
The present invention also includes a portable terminal unit that is mounted on the body of the user in a portable manner, and an analyzer that analyzes data from the portable terminal unit. And a motion storage means for recording a signal from the motion sensor means, wherein the analyzer processes a signal from the motion sensor recorded in the motion storage means, and a motion recorded in advance. Provided is a system for diagnosing a sense of equilibrium function, comprising a motor diagnosis means for diagnosing a sense of equilibrium function based on diagnostic information, and configured to analyze the motion of the user and output diagnostic information on the sense of equilibrium function. Things.
[0019]
In addition, the present invention includes a portable terminal unit that is mounted on the body of the user so as to be portable, and an analyzer that analyzes data from the portable terminal, wherein the portable terminal unit exercises the body of the user. Motion sensor means for detecting, and a motion information transmitting means for wirelessly transmitting a signal from the motion sensor means to the outside, the analyzer receives a signal from the motion information transmitting means, from the motion sensor means Motion information receiving means for obtaining a signal of the motion information, and motion diagnosis means for processing a signal from the motion information receiving means and diagnosing a sense of equilibrium function based on motion diagnosis information recorded in advance. The present invention provides a balanced sensation function diagnosis system configured to be able to analyze and to output diagnostic information on the balanced sensation function.
[0020]
Further, the motion diagnostic means further includes a stimulus generating means for giving a sensory stimulus to the user, and the information on characteristics of the sensory stimulus given to the user from the stimulus generating means is provided in the motion diagnostic means. By sharing, a signal from the motion sensor means for a specific stimulus can be analyzed and diagnostic information of the sense of balance function can be output.
[0021]
Further, the present invention is a portable terminal unit used in the equilibrium sensation function diagnosis system having the above-described configuration, wherein the motion sensor unit is configured to be mounted so as to be installed on the top of the user. An object of the present invention is to provide a mobile terminal configured to have detection sensitivity at least in the front-back direction and the left-right direction of the head.
[0022]
Further, the present invention is a portable terminal unit used in the equilibrium sensation function diagnosis system having the above configuration, wherein the motion sensor means can be mounted so as to be installed on a waist portion of the user. The portable terminal unit is configured to have a measurement sensitivity in at least the front-back direction and the left-right direction of the waist with reference to the center line of the body of the user.
[0023]
The present invention also provides an analyzer used for the equilibrium sensation function diagnosis system having the above-described configuration.
[0024]
The present invention also provides a computer-readable program for causing the analyzer having the above configuration to execute the motion analyzing means. This program can be stored in a storage medium.
[0025]
BEST MODE FOR CARRYING OUT THE INVENTION
(First embodiment)
FIG. 1 shows a first embodiment according to the present invention. A signal indicating the movement of the user's body detected by a movement sensor means 10 attached to the user's body is sent to a movement diagnosis means 12. Is entered. The motion diagnostic means 12 includes various parameters describing the physical motion stored in the motion diagnostic information storage means 16 for the signal indicating the motion, such as physical characteristics such as acceleration, speed, displacement, and frequency components. Is calculated in advance and compared with a physical feature obtained from a healthy person or a non-healthy person having a specific impairment in the balance sensory function, that is, the motor diagnostic information, to diagnose the balance sensory function. Then, the diagnosis result is output through the diagnosis result output means 16.
[0026]
In the present embodiment, at least the motion sensor means 10 is attached to the body of the user. However, other components, that is, the motion diagnosis means 12, the motion diagnosis information storage means 14, and the diagnosis result output means 16 are provided by the user. It does not have to be worn on the body.
[0027]
However, if the movement sensor means 10 and the movement diagnosis means 12 are connected by physical wiring such as electric signal wiring, the presence of the wiring may hinder the user's natural movement. More desirably, all means are worn on the user's body.
[0028]
(Second embodiment)
FIG. 2 shows a second embodiment of the present invention, in which the motion sensor means 10 and the motion storage means 18 for temporarily storing a signal representing the motion from the motion sensor means 10 are attached to at least the user's body. Is done. Then, once the exercise condition is recorded in the exercise storage means 18, the output of the exercise storage means 18 is connected to the input of the exercise diagnostic means 12, in the same manner as the procedure described in the first embodiment. Obtain the diagnostic result output.
[0029]
In this embodiment, the components that the user must wear are only the motion sensor means 10 and the motion storage means 18, and physical wiring such as electrical signal wiring is performed after the user's movement has been measured. Since it is sufficient to install the device between the exercise storage means 18 and the exercise diagnosis means 12, it is possible to perform measurements necessary for diagnosis without hindering the user's natural exercise.
[0030]
(Third embodiment)
FIG. 3 shows a third embodiment of the present invention. In place of the exercise storage means 18 in the second embodiment, the exercise information transmitting means 20 worn by the user and necessarily worn by the user. Exercise information is transmitted as an exercise information signal to the unnecessary exercise information receiving means 22 by a wireless method.
[0031]
That is, in this embodiment, at least the user must wear only the motion sensor means 10 and the motion information transmitting means 20, and the other components such as the motion information receiving means 22, the motion diagnosing means 12, the motion The diagnostic information storage means 14 and the diagnostic result output means 16 need not necessarily be worn on the user's body.
[0032]
In the present embodiment, the measured information can be transmitted in real time to a device for externally-executed exercise diagnosis while keeping the number of devices worn on the user's body to a minimum. Exercise diagnosis that requires real-time performance can be performed without hindrance.
[0033]
(Fourth embodiment)
FIG. 4 shows a fourth embodiment of the present invention. In the system for diagnosing a sense of equilibrium function described in the first embodiment, a stimulus generating means 24 for actively giving a sensory stimulus to a user is provided with a motor diagnosis. It is connected to the means 12.
[0034]
Here, examples of the sensory stimulus generated by the stimulus generation unit 24 include a projection of a moving image on a large screen, a light source having a strong and weak change, and a head mounted display mounted on the user's head. Stimulus to the user's vision, such as image presentation from a device that projects images near the eyes, or sound, including stereoscopic ones such as stereo, and further to the user's body For example, there is an action of exerting an active stimulus such as pressing the back of a user.
[0035]
In the present embodiment, in addition to the stimulus generation means 24 for giving such a stimulus, the stimulus generation means 24 informs the exercise diagnosis means 12 when and what kind of stimulus was given to the user, thereby responding to this. This makes it easy to identify the signal from the motion sensor to be activated, and enables active balance sensory function diagnosis.
[0036]
In addition, the stimulus generating means 24 in this embodiment can be used together with the second and third embodiments of the present invention, and in any case, a device which must be worn by the user on the body. Since the amount can be reduced and the natural movement of the user is not hindered by the physical electrical signal wiring or the like, the user's movement diagnosis for the application of the external stimulus in a more natural situation can be performed.
[0037]
(Fifth embodiment)
FIG. 5 shows an example of the equilibrium sensation function diagnostic apparatus 1 according to the fifth embodiment of the present invention. The force sensor or the acceleration sensor is attached to the top of the head and has sensitivity in the front-back direction and the left-right direction of the head. This is an example in which the motion sensor 30 is configured by a sensor.
[0038]
In measurement, it is desirable that the user's head be in the same posture as when standing upright on the ground, that is, in a state where the top of the head is farthest from the ground. In the diagnosis of the sense of equilibrium function, it is effective to measure the physical swing of the head, but in this embodiment, in addition to the coordinate movement of the head in the front-back direction and the left-right direction, the angle of the top of the head with respect to the ground horizontal plane is measured. That is, a change in the posture of the head can also be acquired as exercise information for diagnosis. That is, by using an acceleration sensor having sensitivity to gravity (static acceleration), it is possible to calculate the angle formed by the crown with respect to the direction of gravity.
[0039]
Now, assuming that the angle formed by the crown with respect to the horizontal plane of the ground is θ, the gravitational acceleration is G, and the acceleration measured by the acceleration sensor is a,
[0040]
[Equation 1] a = G · sin θ
[0041]
Is established. Here, when θ is very small, specifically, when it is smaller than about 5 degrees, the relationship of sin θ to θ (where θ is in radians) holds.
[0042]
[Equation 2] a ~ G · θ
[0043]
And can be. This means that when the user attaches the sensor to the top of the head, if the angle with respect to the ground can be maintained within an error range of about 5 degrees or less, a change in the posture of the user's head, that is, a change in θ is measured. This means that it can be read as a change in the acceleration a. Therefore, every time a sensor is attached to the top of the head, the fluctuation of the top of the head can be measured with good reproducibility without calibrating the relationship between the posture (angle) and the acceleration.
[0044]
Since the acceleration sensor has sensitivity to the angle with respect to the ground, that is, the degree of the action of gravity, there are two types of measured acceleration: linear acceleration and one corresponding to a change in angle. Therefore, in order to enable more accurate measurement, a change in angle can be separated from linear motion by using a sensor having sensitivity to rotational motion such as a gyro sensor. However, in actual measurement, the change in the angle with respect to the ground is often a slow change with respect to a linear motion, so that the signal from the acceleration sensor changes with a high-frequency component, for example, at a cycle of about twice or more per second. Appropriate diagnosis can be made by observing only the components that are present. In such a case, a diagnosis is performed after removing a signal component (for example, a low frequency component) due to a change in the attitude of the acceleration sensor as noise.
[0045]
Also, regarding the coordinate movement in the front-back, front-back, and left-right directions, assuming that the variation in the mounting position of the motion sensor on the top of the head is less than ± 5 degrees in inclination angle, from sin5 ° to 0.08, It is possible to measure the motion acceleration in the front, rear, left and right directions with an error of about 10% or less.
[0046]
In addition, the attachment of the motion sensor to the top of the head has the advantage that there is little restriction on the user's clothes, and that a configuration like a hair band or headphones can be used by anyone.
[0047]
As a sensor used as a motion sensor, in addition to an acceleration sensor that calculates acceleration by measuring a force acting on a weight inside the sensor, a gyro sensor or the like that measures angular velocity may be used. Due to the nature of measurement of fluctuations at the top, it is desirable to measure at least two directions of front / back / left / right with respect to the posture of the head in the upright posture.
[0048]
(Sixth embodiment)
FIG. 6 shows an example of the equilibrium sensation function diagnostic device 2 according to the sixth embodiment of the present invention, which is mounted on the waist of a user and fixed to the front of the waist using a belt-shaped jig 32. The motion sensor 34 constitutes the motion sensor.
[0049]
The waist is a reference part in almost all human body movements, and compared to peripheral parts such as limbs, random movements that are meaningless in diagnosis of balance sensory function are less likely to occur, so reliability is low. High exercise information can be obtained. Therefore, in the present embodiment, the motion sensor is installed on the front surface of the waist, but the same effect can be obtained even if it is installed at the center of the rear surface.
[0050]
In the equilibrium sensation function diagnosis, it is effective to measure body sway, so it is effective to measure the motion of the waist, which is the center of the body, back and forth, left and right, and the acceleration sensor has sensitivity in each direction. Alternatively, it is desirable to use an angular velocity sensor.
[0051]
Next, the function of each device in the equilibrium sensation function diagnosis system of the present invention will be described. FIG. 7 is a functional block diagram showing the configuration of the balance sense function diagnosis system 3 according to the present invention. In the equilibrium sensation function diagnosis system 3 in this figure, an acceleration sensor 36 as a movement sensor means for detecting the movement of the X axis and the movement of the Y axis includes an A / D converter 40 for each of the X axis and the Y axis. A / D converters 40 and 42 are electrically connected to a microcomputer 44. The microcomputer 44 includes a diagnosis information memory 46, a start switch 48, a diagnosis result output unit 50, and a speaker 52 which are electrically connected. Hereinafter, each configuration will be described.
[0052]
First, the acceleration sensor 36 as a motion sensor will be described. The acceleration sensor 36 includes a sensor 36a for detecting X-axis motion and a sensor 36b for detecting Y-axis motion, and calculates acceleration by measuring a force acting on a weight inside the sensor.
[0053]
Note that, for the purpose of the present invention of diagnosing the balance sensation function, it is desirable that the acceleration sensor 36 be installed at the top of the head as shown in FIG. 5 or at the waist as shown in FIG. For example, by installing the acceleration sensor at the top of the head, it is possible to measure the fluctuation of the top of the head with a small error and with good reproducibility without calibrating the relationship between the posture (angle) and the acceleration. In addition, by installing the acceleration sensor at the waist corresponding to the center of the body, compared to peripheral parts such as limbs, random movements that are meaningless in the diagnosis of equilibrium sensation function are less likely to occur, so high reliability is achieved. Exercise information can be obtained. In addition, when it installs in a waist, it is more preferable to install in the position of the navel (navel) of a person located near the center of gravity of a human body and located on the center line of the body.
[0054]
The acceleration sensor 36 used in the present invention measures approximately 10/20 / 1000G (G is gravitational acceleration), which is an acceleration corresponding to a typical body sway in a healthy person, with a sufficient resolution. It is preferable to have a resolution capable of capturing the following acceleration.
[0055]
Next, the microcomputer 44 will be described. The microcomputer 44 has a function of performing arithmetic processing on the acceleration signal received from the acceleration sensor 36 based on feature amount data for diagnosis and determination. More specifically, a diagnosis information memory 46 as motion diagnosis storage means in which information for diagnosis determination is stored as data, and a motion diagnosis for analyzing a signal received from the acceleration sensor 36 based on motion feature amount data for diagnosis determination. Means (not shown), and a function of outputting a result of the processing by a diagnosis result output unit 50 and / or a speaker 52 described later.
[0056]
The diagnostic result output unit 50 is for outputting the diagnostic result by the microcomputer 44 to the outside. The diagnostic result output unit 50 can display the diagnostic result on a screen via a monitor or output the diagnostic result to a paper medium by a printer or the like. it can.
[0057]
The A / D converters 40 and 42 are for converting an analog signal output from the acceleration sensor 36 into a digital signal. The speaker 52 is used as one of the above-described diagnosis result output units 50 to convey the start of measurement by sound, to output a diagnosis result by the microcomputer 44 as sound, to output an operation signal of an operator as sound, and the like. It is used regularly. The types of the A / D converters 40 and 42 and the speaker 52 are not particularly limited, and generally commercially available ones can be used.
[0058]
The equilibrium sensation function diagnosis system 3 of the present invention includes a motion storage unit for temporarily storing information from the acceleration sensor 36, a motion information transmission unit for wirelessly transmitting information from the acceleration sensor 36, Exercise information receiving means for receiving a signal from the information transmitting means and transmitting the signal to the exercise diagnosing means may be provided.
[0059]
Next, an example of information processing of the equilibrium sensation function diagnosis system 3 according to the present invention will be described based on the flowchart shown in FIG.
[0060]
When the start switch of the equilibrium sensation function diagnosis system of the present invention is turned on (ST1), the equilibrium sensation function diagnosis system is started, and measurement by the acceleration sensor is started several seconds after the start switch is turned on. Therefore, it is desirable to attach the diagnostic device to the body before turning on the start switch. However, the time from the start to the start of the measurement can be set appropriately according to the situation such as when the person receiving the diagnosis performs the measurement by himself or when another person operates the apparatus.
[0061]
Regarding the start / end of the measurement, the timing can be displayed using light from an LED or the like. However, when the user performs measurement alone, the device itself does not enter the user's field of view, In some cases, the user may have their eyes closed as a measurement condition, and it may not be appropriate to use the light notification method. In such a case, the start and end of the measurement are notified to the user by sound effects from the sound from the speaker (ST2).
[0062]
The motion data collected from the acceleration sensor is a physical characteristic amount such as, for example, acceleration, speed, displacement, and frequency component, and is recorded in the computer by the motion storage means (ST3). The recorded exercise data may be stored for a certain period of time and deleted at the end of the measurement, or newly collected exercise data may be overwritten at the next measurement.
[0063]
The measurement can be typically performed in 30 seconds to 60 seconds, but the measurement time can be appropriately set according to the user's condition and the like. For example, for patients with severe cerebral dysfunction, setting the measurement time to the shortest value because it is difficult to maintain an upright posture for a certain period of time, or when measuring a patient at the first visit who came to the diagnosis of vertigo, Since it is necessary to accurately measure the degree of dizziness, a change such as setting the measurement time to the longest value is possible.
[0064]
When the acquisition of the exercise data is completed, the end of the measurement is notified to the user by a sound effect or the like (ST4). At this point, the user can remove the diagnostic device from the body.
[0065]
At the same time, the microcomputer calculates the motion feature amount of the obtained motion data (ST5). As a result, the obtained motor features are compared with physical features previously measured and stored from a healthy person or a non-healthy person having a specific impairment in balance sensory function, that is, data for diagnosis determination as motor diagnosis information. Is performed (ST6).
[0066]
The information obtained as a result of the comparison is output from the diagnostic result output unit as diagnostic information (ST7). At this time, the diagnostic information is displayed on a screen by a display or the like, or is printed and output on a paper medium by a printer or the like.
[0067]
Note that the measurement can be performed while standing or sitting, and the user does not need to be always upright during the measurement as in the conventional equilibrium sensation diagnostic apparatus.
[0068]
Next, a method of processing the exercise data obtained from the acceleration sensor will be described. FIG. 9 shows a user's motion trajectory obtained from the acceleration sensor. In the example shown in the figure, the installation location of the acceleration sensor is at the top of the head as shown in FIG.
[0069]
When the acceleration sensor 54 is installed on the top of the head of a person, left and right swings (lateral shakes) are detected in the X-axis direction in FIG. 9A, and forward and backward swings (vertical shakes) are detected in the Y-axis direction. FIG. 9B shows the value of the acceleration with respect to time as a trajectory pattern. In this figure, from the acceleration value at the time t1 and the acceleration value at the time t2, it is possible to obtain a feature amount indicating how much the body axis has shaken in a certain period of time.
[0070]
FIG. 10 shows an example of calculating the area based on the above-described acceleration trajectory pattern. As shown in this figure, the outermost circumference is calculated from the locus of the two-dimensional acceleration. Next, by calculating the area of the range surrounded by the outermost periphery (the range filled in black), it is possible to obtain a feature amount indicating the maximum range in which the user's head has shaken.
[0071]
In addition, the amount of movement of the user's head can be obtained based on the acceleration trajectory pattern. FIG. 11 shows an example of calculating the total trajectory length from the acceleration trajectory pattern. The trajectories of t2, t3... Tn and the acceleration are plotted with time from time t1, and the distance between the plots is obtained as trajectory lengths L1, L2. Then, as shown below, the length L1 of the acceleration trajectory from time t1 to t2, the length L2 of the acceleration trajectory from time t2 to t3,. By adding, a feature amount (total trajectory length) representing how much the user's head has moved within the measurement time can be obtained.
[0072]
Total trajectory length = length of acceleration trajectory from time t1 to t2 L1 + length of acceleration trajectory from time t2 to t3 L2 + length of acceleration trajectory from time tn-1 to tn
[0073]
Further, as a result of the measurement, when the relationship between the time and the acceleration becomes a graph as shown in FIG. 12A, the Fourier transform from the time signal f (t) to the frequency function F (ω) is performed. Then, a graph showing the relationship between the frequency and the amplitude as shown in FIG. 12B is obtained. Among them, the energy of vibration within a predetermined frequency range (range indicated by an arrow) can be obtained as a feature amount. Note that this feature amount can be obtained for each of the X axis and the Y axis.
[0074]
As described above, the case where the equilibrium sensation function diagnostic device and system according to the present invention are used for measuring a human's equilibrium sensation function has been described. It can also be applied to In such a case, the information obtained from the motion sensor performs information processing for forming a posture that prevents the robot from falling down by the microcomputer, and the diagnosis result output unit reflects the information on the operation of peripheral parts such as limbs. be able to. Even if the robot falls down, a command for forming a posture that minimizes the impact when the robot falls down can be reflected on the robot.
[0075]
In addition, since the diagnostic device and the system according to the present invention measure using a motion sensor such as an acceleration sensor installed on a part on the body, gravity exists as in a conventional scale-based measurement. It does not assume that, and is not restricted by location. Therefore, it can be used even in a weightless state such as the universe.
[0076]
【The invention's effect】
As described above, by attaching the motion sensor means to the user's body and measuring the motion of a characteristic part of the body related to the balance sensory function, it was difficult with the conventional technology, anytime, anywhere, An equilibrium sensation function diagnostic device and system that can be used by anyone can be realized.
[0077]
In addition, since the device and system according to the present invention can be used anytime, anywhere, the user can routinely perform a balance sensation function diagnosis without visiting the medical institution, thereby easily checking the daily health condition. I can figure it out.
[0078]
Although dizziness is an important problem in space, the diagnostic apparatus and system according to the present invention can be used in a zero gravity state such as space.
[0079]
Further, using the diagnostic apparatus and system according to the present invention, quantitative evaluation of the balance function, evaluation of the severity of the imbalance, evaluation of the degree of improvement of the imbalance, evaluation of the effect of treatment, an index of the development of the balance function, It is also possible to estimate a disordered organ of imbalance.
[Brief description of the drawings]
FIG. 1 is a block diagram of a balance sense function diagnosis system according to a first embodiment of the present invention.
FIG. 2 is a block diagram of a balance sense function diagnosis system according to a second embodiment of the present invention.
FIG. 3 is a block diagram of a balance sense function diagnosis system according to a third embodiment of the present invention.
FIG. 4 is a block diagram of a balance sense function diagnosis system according to a fourth embodiment of the present invention.
FIG. 5 is a diagram illustrating a device for diagnosing a sense of equilibrium function according to a fifth embodiment of the present invention.
FIG. 6 is a diagram illustrating a device for diagnosing a sense of equilibrium function according to a sixth embodiment of the present invention.
FIG. 7 is a functional block diagram showing a configuration of a balance sense function diagnosis system according to the present invention.
FIG. 8 is a flowchart describing an example of information processing of the equilibrium sensation function diagnosis system according to the present invention.
FIG. 9 is a diagram illustrating a user's acceleration trajectory pattern obtained from the acceleration sensor.
FIG. 10 is a diagram illustrating an example of calculating an area based on the above-described acceleration trajectory pattern.
FIG. 11 is a diagram illustrating an example of calculating a total trajectory length from the acceleration trajectory pattern.
FIG. 12 is a diagram illustrating a result of Fourier transform from a time signal f (t) to a frequency function F (ω).
[Explanation of symbols]
1, 2: balance sensory function diagnosis device, 3: balance sensory function diagnosis system, 10: movement sensor means, 12: movement diagnosis means, 14: movement diagnosis information storage means, 16: diagnosis result output means, 18: movement storage means , 20: exercise information transmitting means, 22: exercise information receiving means, 24: stimulus generating means, 26, 30, 34: exercise sensor, 32: jig, 36, 54: acceleration sensor, 44: microcomputer, 46: diagnosis Information memory

Claims (9)

A system for diagnosing equilibrium sensation, comprising: a mobile terminal unit that is mounted on a user's body so as to be portable; and an analyzer that analyzes data from the mobile terminal unit. The apparatus comprises motion sensor means for detecting a movement of the body, and the analyzer comprises a motion diagnostic means for processing a signal from the motion sensor means and diagnosing a sense of equilibrium function based on motion diagnostic information recorded in advance. A balance sensory function diagnosis system configured to analyze the movement of the user and output diagnostic information relating to the balance sensory function. A mobile terminal unit movably mounted on a user's body, and an analyzer for analyzing data from the mobile terminal unit, wherein the mobile terminal unit detects motion of the user's body And a motion storage means for recording a signal from the motion sensor means. An equilibrium sensation function diagnosis system comprising a motor diagnosis means for diagnosing a function, and configured to analyze the movement of the user and output diagnosis information on the equilibrium sensation function. A mobile terminal unit that is mounted on the body of the user in a portable manner, and an analyzer that analyzes data from the mobile terminal, wherein the mobile terminal unit includes a motion sensor unit that detects a motion of the user's body; Motion information transmitting means for wirelessly transmitting a signal from the motion sensor means to the outside, wherein the analyzer receives a signal from the motion information transmitting means and obtains a signal from the motion sensor means. Receiving means for processing a signal from the movement information receiving means and diagnosing a balance sensation function based on pre-recorded movement diagnosis information. System for diagnosing equilibrium sensation that can output diagnostic information about The system for diagnosing equilibrium sensation according to any one of claims 1 to 3, wherein the movement diagnosis means further includes stimulus generation means for giving a sensory stimulus to the user, and the stimulus generation means determines the user from By sharing information on the characteristics of sensory stimuli given to the motion diagnostic means, a signal from the motion sensor means for a specific stimulus is analyzed, and diagnostic information of a balance sensory function is output. Sense of equilibrium function diagnosis system. The mobile terminal unit used in the equilibrium sensation function diagnosis system according to any one of claims 1 to 4, wherein the motion sensor unit can be mounted so as to be installed on the top of the user. A portable terminal unit having a configuration and having a detection sensitivity at least in the front-back direction and the left-right direction of the head. The mobile terminal unit used in the equilibrium sensation function diagnosis system according to any one of claims 1 to 4, wherein the motion sensor unit is attachable to be installed on a waist portion of the user. The portable terminal unit, wherein the portable terminal unit is configured to have a measurement sensitivity in at least the front-rear direction and the left-right direction of the waist with respect to the center line of the body of the user. The analyzer according to claim 1. A computer-readable program for causing the analyzer according to claim 1 to execute the motion analysis means. A storage medium storing the program according to claim 8.

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