JP3745222B2 - Tremor measuring instrument - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tremor measuring instrument that measures tremors that are minute vibrations invisible to the eyes due to mechanical vibrations of body parts such as arms and fingers.
[0002]
[Prior art]
Tremor refers to minute vibrations that are invisible to the eyes due to mechanical vibrations of body parts such as arms and fingers.
[0003]
To measure tremor, for example, a finger other than the forearm and a predetermined finger (for example, forefinger) is placed on the measurement table, and the predetermined finger (for example, forefinger) is lifted from the measurement table so that the nail side is on the upper side. This is done by fixing the sensor on the nail side of a predetermined finger (for example, index finger), holding this state for a predetermined time, and measuring the minute vibration (tremor) generated in the predetermined finger (for example, index finger) at this time Yes.
[0004]
On the other hand, conventionally, a nervous system condition such as a subject's degree of fatigue and stress is evaluated from the measurement result of this tremor and observed over a long period of time.
[0005]
[Problems to be solved by the invention]
However, in the above, in order to evaluate the nervous system condition such as the degree of fatigue and stress of the subject from the tremor measurement result, an evaluator such as a hospital teacher must It was necessary to make an evaluation by referring to data indicating the relationship with the degree of stress such as the degree of stress. In addition, to observe the nervous system condition such as the degree of fatigue and stress of the subject over a long period of time, graph the nervous system condition such as the measurement result of tremor or the degree of fatigue and stress, etc. And had to record. These have the problem that they have to be handled manually and are troublesome.
[0006]
In addition, the results evaluated from the tremor measurement results regarding the degree of nervous system condition such as the degree of fatigue and stress of subjects who are not under the control of the will indicate the fatigue that the subject felt psychologically at the time of tremor measurement. The degree of nervous system condition such as the degree of fatigue or the degree of stress that is not under the subject's will is often high. Nevertheless, the subject's awareness was low, and there was a problem that the subject suffered health problems due to the nervous system condition such as the degree of fatigue and stress.
[0007]
Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, and to evaluate the nervous system condition such as the degree of fatigue and the degree of stress automatically from both objective and subjective aspects. To provide a possible tremor measuring instrument.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the tremor measuring device of the present invention has a tremor measuring means for measuring tremor, which is a minute vibration of a predetermined part of the body, and the subject feels psychologically at the time of tremor measurement. Input means for inputting subjective physical condition information related to subjective nervous system condition such as fatigue and stress, and objective nervous system physical condition such as the degree of fatigue and the degree of stress that are not under the control of tremor and will determined in advance Created in advance showing the correlation between the objective data created in advance showing the correlation between the subjective physical condition information and the subjective nervous system physical condition such as the degree of fatigue and stress that are psychologically felt Storage means for storing subjective data and the objective nervous system physical condition corresponding to a tremor measurement result measured by the tremor measurement means with reference to the objective data stored in the storage means And store in the storage means Is equipped with an evaluation unit for determining the subjective nervous system health degree corresponding to the subjective physical condition information input by the input means by referring to the subjective data, the objective nervous system as determined by the evaluation unit A display means for displaying a correlation between physical condition and the subjective nervous system condition is provided .
[0010]
In addition, tremor measurement means for measuring tremor, which is a minute vibration of a predetermined part of the body, and subjective physical condition information regarding subjective nervous system physical condition such as fatigue and stress that the subject feels psychologically at the time of tremor measurement Objective data created in advance indicating the correlation between the input means to be input and the objective nervous system physical condition such as the degree of fatigue and the degree of stress that is not under the control of tremor and pre-measurement and the subjective Storing means for storing subjective data prepared in advance indicating a correlation between physical condition information and subjective nervous system physical condition such as the degree of fatigue and stress felt psychologically; and storing in the storage means The objective nervous system physical condition corresponding to the tremor measurement result measured by the tremor measurement means with reference to the objective data thus obtained is obtained, and the subjective data stored in the storage means is referred to Input means Wherein comprising an evaluation means for determining a subjective nervous system health index, a, the objective nervous system health index and the subjective nervous system health index and the time calculated by said evaluation means corresponding to the inputted subjective physical condition information And a display means for displaying the historical relationship.
[0011]
In the above-described invention, tremor is measured by the tremor measuring means, and an objective nervous system physical condition corresponding to the measurement result is obtained with reference to objective data. Also, the subjective physical condition information is input by the input means, and the subjective nervous system physical condition corresponding to the input subjective physical condition information is obtained with reference to the subjective data. Based on the obtained objective nervous system condition and subjective nervous system condition, the subject was aware of both the objective and subjective aspects of the nervous system condition such as the degree of fatigue and the degree of stress. It becomes possible to do.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a tremor measuring instrument according to the present invention will be described below with reference to the drawings.
[0013]
FIG. 1 is a perspective view showing a configuration of a tremor measuring instrument according to an embodiment of the present invention. FIG. 2 is a block diagram showing an electrical configuration.
[0014]
As shown in FIG. 1, the tremor measuring instrument includes a tremor detection unit 1 in tremor measurement and a device body 3 that processes detection data from the tremor detection unit 1. The sensor unit 1 and the apparatus main body 3 are connected by a conducting wire 4.
[0015]
The tremor detection unit 1 includes a vibration sensor (acceleration sensor) 5 for detecting fine vibration (tremor) of a predetermined part of the body and a band 7 for attaching the vibration sensor 5 to the predetermined part of the body. The apparatus body 3 is provided with a switch 9 and a display means 11. The switch 9 includes input means 9a and 9b for inputting subjective physical condition information related to a subjective nervous system physical condition such as fatigue and stress that the subject feels subjectively or psychologically when tremor is measured, and a power switch means 9c. Have The input means 9a, 9b may be a push button type or a numeric keypad type. The display means 11 displays the input items input by the input means 9a and 9b and the processing result in the microcomputer.
[0016]
An electronic circuit unit 13 is provided inside the apparatus body 3 as shown in FIG. The electronic circuit unit 13 amplifies a fine analog signal supplied from the vibration sensor 5 and converts it into a digital signal, and calculates tremor data from the digital signal by the A / D converter 15. A microcomputer 17 having an arithmetic means 18 for processing, an evaluation means 19 for evaluating the degree of nervous system condition such as the degree of fatigue and the degree of stress, and a storage means 21 are provided.
[0017]
The tremor measuring means 23 for obtaining data relating to tremor is composed of the vibration sensor 5, the A / D converter 15 and the arithmetic means 18.
[0018]
The storage means 21 includes objective data 31 and subjective physical condition that are created in advance and indicate the correlation between tremor measured in advance and objective nervous system physical condition such as the degree of fatigue and stress that are not under the control of the will. Pre-created subjective data 33 indicating a correlation between information and subjective nervous system physical condition such as the degree of fatigue and the degree of stress felt psychologically is stored. In the tremor measurement performed in advance to obtain the objective data 31, the tremor measurement means 23 itself may be used for measurement or other tremor measurement means may be used for measurement.
[0019]
The evaluation unit 19 obtains an objective nervous system physical condition corresponding to the tremor measurement result measured by the tremor measurement unit 23 with reference to the objective data 31 stored in the storage unit 21, and stores in the storage unit 21. With reference to the stored subjective data 33, the subjective nervous system physical condition corresponding to the subjective physical condition information input by the input means 9a, 9b is obtained.
[0020]
Next, the usage method and operation | movement of a tremor measuring device are demonstrated.
FIG. 3 shows an example of a question that forms subjective physical condition information for subjective fatigue displayed on the display means 11 as an input item. Refer to the question displayed on the display means 11 and input ◯ and X with the input means 9a and 9b or enter a number from the numeric keypad. Subjective physical condition information relating to subjective nervous system physical condition is input.
[0021]
FIG. 4 shows an example of objective data 31. The objective data 31 indicates a correlation between the tremor data 35 measured by the tremor measuring means 23 and the objective nervous system physical condition 36 such as the degree of fatigue and the degree of stress that are not under the control of the will. .
[0022]
FIG. 5 shows an example of a tremor waveform graph displayed as an output item on the display means 11.
[0023]
FIG. 6 shows an example of a frequency analysis waveform graph displayed as an output item on the display means 11.
[0024]
FIG. 7 shows an example in which the frequency analysis waveform displayed as an output item on the display means 11 is digitized. FIG. 8 is an example of a comparison graph of the temporal history relationship between the objective fatigue level (objective nervous system condition) and the subjective fatigue level (subjective nervous system condition) displayed on the display means 11 as output items. Indicates. FIG. 9 shows an example of an evaluation graph showing the correlation between the subjective fatigue level (subjective nervous system physical condition) and the objective fatigue level (objective nervous system physical condition).
[0025]
Hereinafter, an example of measuring and evaluating an objective fatigue level representing the degree of fatigue among the objective nervous system physical condition and a subjective fatigue level representing the degree of fatigue among the subjective nervous system physical condition will be described.
[0026]
Before detecting the tremor by the vibration sensor 5, the subject feels psychologically with respect to the question regarding the subjective fatigue level such as the question example 1 and the question example 2 shown in FIG. 3 according to the guidance displayed on the display means 11. The input means 9a and 9b respond to the degree of fatigue.
[0027]
Then, the subject wears the vibration sensor 5 on a predetermined part of the body. The vibration sensor 5 detects fine vibration (tremor) of a predetermined part of the body of the subject and outputs it to the A / D converter 15 as an analog signal. The A / D converter 15 that has been supplied with the analog signal amplifies the analog signal, converts it into a digital signal, and outputs it to the microcomputer 17. In the microcomputer 17 that has been supplied with the digital signal, first, the arithmetic means 18 converts it into a tremor waveform as shown in FIG. 5 or converts the digital signal from the A / D converter 15 over a predetermined measurement time. The power spectrum as shown in FIG. 6 is obtained by sampling and frequency conversion.
[0028]
As shown in the frequency analysis graph shown in FIG. 6, the result of the power spectrum is obtained with the horizontal axis representing frequency and the vertical axis representing power. Incidentally, in this frequency analysis graph, power peaks Pl and Ph as seen in two places of about 10 Hz and about 20 Hz are formed. In the example of this graph, it is considered that the peak Pl of power of about 10 Hz is due to the control signal from the brain, and the peak Ph of power of about 20 Hz is due to the spinal cord reflex that does not pass through the brain. The power peak sizes Pl and Ph, the frequencies fl and fh, the area of the frequency analysis waveform, and the like vary depending on the objective fatigue level.
[0029]
Next, the evaluation means 19 refers to objective data 31 stored in advance in the storage means 21 as shown in FIG. The objective data 31 includes a tremor power spectrum result (change rate of the total power spectrum) (see reference numeral 35 in FIG. 4) and an objective fatigue degree (objective fatigue degree score) (see reference numeral 36 in FIG. 4). The correlation between them is shown. The objective fatigue level is evaluated by referring to the objective data 31, and this objective fatigue level is scored. In the evaluation method, the total power spectrum of the tremor waveform subjected to frequency analysis measured this time is obtained, the rate of change from the total power spectrum measured last time is obtained, and the objective fatigue score corresponding to this is selected. Thereby, objective fatigue evaluation data is obtained. In addition, since there is no previous data at the time of the first measurement, the objective fatigue level is not evaluated.
[0030]
The evaluation means 19 evaluates the subjective fatigue level by referring to the subjective data 33 stored in the storage means 21 based on the subjective fatigue results input by the input means 9a and 9b. This subjective fatigue level is scored by an answer to a question on the subjective fatigue level such as question example 1 and question example 2 shown in FIG. As for the evaluation method, in the case of question example 1, the number of ○ is a score. In the case of Question Example 2, the entered numerical value is the score. As a result, subjective fatigue evaluation data can be obtained.
[0031]
Then, a graph showing the correlation between the objective fatigue level and the subjective fatigue level as shown in FIG. 9 is obtained from the evaluation data of the objective fatigue level and the subjective fatigue level, and comprehensive evaluation is performed using this graph. Is done. In FIG. 9, the vertical axis is the subjective fatigue level, and the horizontal axis is the objective fatigue level, which are divided into evaluation areas A to E. When the subjective fatigue level and the objective fatigue level are both in the evaluation area A, the physical condition is very good. When it becomes the evaluation area of B, it represents a state where the physical condition is normal or higher. In the evaluation area of C, both the objective fatigue level and the subjective fatigue level are high, the physical condition is very bad, and the fatigue state is shown. In the evaluation area of D, the objective fatigue level is low, but the subjective fatigue level is high, and the feeling of fatigue due to feeling depression is strong. When it becomes the E evaluation areas, objective degree of fatigue is high but lower subjective fatigue, the body even though it has already been fatigue, subjects himself represents to keep in mind the state does not feel the fatigue.
[0032]
The evaluation result by the evaluation means 19 is stored in the storage means 21 as history information.
[0033]
Next, the result of processing by the computing means 18 and the evaluation means 19 of the microcomputer 17 is output to the display means 11. In the display means 11, the tremor waveform converted by the computing means 18 of the microcomputer 17 is displayed as a graph with time on the horizontal axis and magnitude of vibration on the vertical axis, as shown in FIG. The power spectrum obtained by the computing means 18 of the microcomputer 17 is displayed as a graph with the horizontal axis representing frequency and the vertical axis representing power as shown in FIG. The frequency analysis graph as shown in FIG. 6 may be converted into a numerical display as shown in FIG.
[0034]
Further, as shown in FIG. 8, in the display means 11, history information that has been evaluated in the past and stored in the storage means 21 is measured on the horizontal axis and measured in terms of objective physical condition and subjective fatigue on the vertical axis. Display as a graph. Note that the graph shown in FIG. 8 can display only one of the objective fatigue level and the subjective fatigue level.
[0035]
As described above, according to the embodiment of the present invention, tremor is measured by the tremor measuring means 23, the objective fatigue level corresponding to the measurement result is obtained with reference to the objective data 31, and the input means 11 is used. Subjective physical condition information as shown in FIG. 3 is input, and the subjective fatigue level corresponding to the input subjective physical condition information can be obtained with reference to the subjective data 33. For example, referring to FIG. From the degree of fatigue, the subject can be aware of fatigue from both objective and subjective aspects.
[0036]
【The invention's effect】
As described above, according to the configuration of the present invention, tremor capable of automatically evaluating the nervous system condition such as the degree of fatigue and the degree of stress from both objective and subjective aspects. It is to provide a measuring instrument.
[Brief description of the drawings]
FIG. 1 is a diagram showing a schematic configuration of a tremor measuring instrument according to the present invention.
FIG. 2 is a block diagram showing an internal configuration of a tremor measuring instrument according to the present invention.
FIG. 3 is a diagram showing an example of a question forming subjective physical condition information displayed as an input item on a display unit.
FIG. 4 is a diagram illustrating an example of objective data indicating a correlation between data related to tremor and objective nervous system physical condition.
FIG. 5 is a diagram showing an example of a tremor waveform graph displayed as an output item on the display means.
FIG. 6 is a diagram showing an example of a frequency analysis waveform graph displayed as an output item on the display means.
FIG. 7 is a diagram showing an example in which a frequency analysis waveform displayed as an output item on the display means is digitized.
FIG. 8 is a diagram showing an example of a comparison graph of a temporal history relationship between an objective fatigue level and a subjective fatigue level displayed as output items on the display means.
FIG. 9 is a diagram showing an example of a graph showing a correlation between an objective fatigue level and a subjective fatigue level.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tremor detection part 3 Apparatus main body 5 Vibration sensor 7 Band 9a, 9b Input means 11 Display means 15 A / D converter 18 Calculation means 19 Evaluation means 21 Storage means 23 Tremor measurement means 31 Objective data 33 Subjective data

Claims (2)

Tremor measurement means for measuring tremor which is a fine vibration of a predetermined part of the body;
Input means for inputting subjective physical condition information related to subjective nervous system physical condition such as fatigue and stress that the subject feels psychologically when measuring tremor,
Objectively created objective data showing the correlation between pre-measured tremor and objective nervous system physical condition such as the degree of fatigue and the degree of stress not under the control of the will and the subjective physical condition information psychologically Storage means for storing subjective data created in advance indicating a correlation between subjective nervous system physical condition such as the degree of fatigue and the degree of stress felt;
The objective nervous system physical condition corresponding to the tremor measurement result measured by the tremor measurement means with reference to the objective data stored in the storage means is obtained, and the objective nerve system physical condition is stored in the storage means. Evaluation means for obtaining the subjective nervous system physical condition corresponding to the subjective physical condition information input by the input means with reference to subjective data;
Equipped with a,
A tremor measuring instrument comprising display means for displaying a correlation between the objective nervous system condition and the subjective nervous system condition obtained by the evaluation means . Tremor measurement means for measuring tremor which is a fine vibration of a predetermined part of the body;
Input means for inputting subjective physical condition information related to subjective nervous system physical condition such as fatigue and stress that the subject feels psychologically when measuring tremor,
Objectively created objective data showing the correlation between pre-measured tremor and objective nervous system physical condition such as the degree of fatigue and the degree of stress not under the control of the will and the subjective physical condition information psychologically Storage means for storing subjective data created in advance indicating a correlation between subjective nervous system physical condition such as the degree of fatigue and the degree of stress felt;
The objective nervous system physical condition corresponding to the tremor measurement result measured by the tremor measurement means with reference to the objective data stored in the storage means is obtained, and the objective nerve system physical condition is stored in the storage means. Evaluation means for obtaining the subjective nervous system physical condition corresponding to the subjective physical condition information input by the input means with reference to subjective data;
With
A tremor measuring instrument comprising display means for displaying a temporal history relationship between the objective nervous system condition determined by the evaluation means and the subjective nervous system condition.

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