JP2002191579A - Shivering meter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shivering meter for automatically evaluating a nervous system physical condition degree such as a fatigue degree and a stress degree from both objective and subjective aspects. SOLUTION: A shivering measuring means 23 measures shivering and an objective nervous system physical condition degree corresponding to the measurement result is obtained by referring to objective data (31). Besides, input means (9a and 9b) input subjective physical condition information and a subjective nervous system physical condition degree corresponding to the inputted subjective physical condition information is obtained by referring to subjective data (33). An examinee becomes conscious of the nervous system physical condition such as the fatigue degree and the stress degree from the both objective and subjective aspects by the obtained objective and subjective nervous system physical condition degrees.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tremor measuring device for measuring tremor, which is a minute vibration that cannot be seen by the eyes due to mechanical vibration of a body part such as an arm or a finger.

[0002]

2. Description of the Related Art Tremors are minute vibrations that cannot be seen by the eyes due to mechanical vibrations of body parts such as arms and fingers.

In order to measure tremor, for example, a finger excluding a forearm and a predetermined finger (for example, an index finger) is placed on a measuring table,
Float the nail side from the measuring table so that the nail side of a predetermined finger (for example, index finger) is on the upper side, fix the acceleration sensor to the nail side of the predetermined finger (for example, index finger), and hold this state for a predetermined time. It is performed by measuring a minute vibration (tremor) generated in a predetermined finger (for example, an index finger).

On the other hand, conventionally, the nervous system physical condition such as the degree of fatigue and the degree of stress of a subject has been evaluated from the measurement result of the tremor, and observation has been performed for a long period of time.

[0005]

However, in the above, in order to evaluate the nervous system physical condition such as the degree of fatigue and the degree of stress of the subject from the measurement result of the tremor, an evaluator such as a hospital teacher or the like evaluates the tremor. It was necessary to evaluate by referring to data showing the relationship between the measurement results of the war and the nervous system physical condition such as the degree of fatigue and the degree of stress. In addition, to observe the nervous system physical condition such as the degree of fatigue and stress of the subject over a long period of time, graph the tremor measurement results or the nervous system physical condition such as the degree of fatigue and stress. It was necessary to record. These problems have to be performed manually, which is troublesome.

The results of evaluation of nervous system physical conditions such as the degree of fatigue and the degree of stress of a subject not under the control of will based on the results of tremor measurement show that the subject feels psychologically when measuring tremor. Since the degree of nervous system physical condition such as the degree of fatigue and stress is often different, for example, the degree of nervous system physical condition such as the degree of fatigue and the degree of stress that is not originally under the control of the subject's will In spite of the high level, the subject's awareness was low, and the subject suffered from nervous system physical conditions such as the degree of fatigue and the degree of stress, and the health suffered.

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, and to evaluate the nervous system physical condition such as the degree of fatigue and the degree of stress from both objective and subjective aspects. It is to provide a tremor measuring device that is automatically possible.

[0008]

In order to achieve the above object, a tremor measuring device of the present invention comprises: a tremor measuring means for measuring a tremor, which is a minute vibration of a predetermined part of a body; Means to input subjective physical condition information on subjective nervous system physical conditions such as fatigue and stress that are psychologically felt at the time of measurement, and the degree of fatigue or stress that is not controlled by tremor and will measured in advance The objective nervous system physical preparations such as the degree of the degree of fatigue and the degree of stress psychologically felt and the previously created objective data indicating the correlation between the objective nervous system physical preparations and the like. Storage means for storing pre-created subjective data indicating a correlation between the tremor and the tremor measurement result measured by the tremor measurement means with reference to the objective data stored in the storage means Obtain the objective nervous system physical condition And evaluation means for referring to the subjective data stored in the storage means and obtaining the subjective nervous system physical fitness corresponding to the subjective physical condition information input by the input means. .

[0009] Further, there is provided a display means for displaying a correlation between the objective nervous system physical condition and the subjective nervous system physical condition obtained by the evaluation means.

[0010] Further, there is provided a display means for displaying a temporal history relationship between the objective nervous system physical condition and the subjective nervous system physical condition obtained by the evaluation means.

In the above invention, the tremor is measured by the tremor measuring means, and an objective nervous system physical condition corresponding to the measurement result is obtained by referring to the objective data. Further, the subjective physical condition information is inputted by the input means, and the subjective nervous system physical condition corresponding to the inputted subjective physical condition information is obtained by referring to the subjective data. From the obtained objective nervous system physical condition and the subjective nervous system physical condition,
The subject can be aware of the physical condition of the nervous system such as the degree of fatigue and the degree of stress from both an objective side and a subjective side.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a tremor measuring device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the configuration of a tremor measuring device according to one embodiment of the present invention. FIG. 2 is a block diagram showing an electrical configuration.

As shown in FIG. 1, the tremor measuring device includes a tremor detecting section 1 for tremor measurement, and an apparatus main body 3 for processing data detected by the tremor detecting section 1. Sensor part 1
And the apparatus main body 3 are connected by a conducting wire 4.

The tremor detecting section 1 includes a vibration sensor (acceleration sensor) 5 for detecting a minute 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. ing. In addition, a switch 9 is provided in the apparatus body 3.
And display means 11 are provided. The switch 9 includes input means 9a and 9b for inputting subjective physical condition information relating to a subjective nervous physical condition such as fatigue and stress that the subject subjectively or psychologically feels when measuring the tremor, and a power switch means 9c. Having. The input means 9a, 9b may be a push button type or a ten key type. The display unit 11 displays the input items input by the input units 9a and 9b and the processing results of the microcomputer.

An electronic circuit section 13 is provided inside the apparatus main body 3 as shown in FIG. The electronic circuit unit 13
An A / D converter 15 for amplifying a fine analog signal supplied from the vibration sensor 5 and converting the signal into a digital signal;
Calculating means 18 for calculating data relating to tremor from a digital signal by the / D converter 15 and evaluating means 1 for evaluating nervous system physical condition such as degree of fatigue and degree of stress
And a storage means 21.

The tremor measuring means 23 for obtaining tremor-related data comprises the vibration sensor 5, the A / D converter 15, and the calculating means 18.

The storage means 21 stores in advance objective data 31 indicating a correlation between a pre-measured tremor and an objective nervous system physical condition such as a degree of fatigue and a degree of stress which are not under the control of will. And subjective data 33 which shows a correlation between subjective physical condition information and subjective nervous system physical condition such as a degree of fatigue and a degree of stress felt psychologically. The tremor measurement performed in advance to obtain the objective data 31 may be measured using the tremor measuring means 23 itself or may be measured using other tremor measuring means.

The evaluation means 19 refers to the objective data 31 stored in the storage means 21 to determine an objective nervous system physical tone corresponding to the measurement result of the tremor measured by the tremor measurement means 23, and stores it. Subjective data 3 stored in the means 21
3, the subjective nervous system physical fitness corresponding to the subjective physical condition information input by the input means 9a, 9b is obtained.

Next, the method of use and operation of the tremor measuring device will be described. FIG. 3 shows an example of a question that forms subjective physical condition information on subjective fatigue displayed on the display unit 11 as an input item. Refer to the question displayed on the display means 11 and input 〇 or × with the input means 9a and 9b or enter a number from the numeric keypad, so that the subject feels mentally fatigued or stressed when measuring the tremor. Subjective physical condition information on the subjective nervous system physical condition is input.

FIG. 4 shows an example of the objective data 31. The objective data 31 indicates a correlation between data 35 relating to tremor measured by the tremor measuring means 23 and an objective nervous system physical condition 36 such as a degree of fatigue or a degree of stress that is not controlled by the will. .

FIG. 5 shows an example of a tremor waveform graph displayed on the display means 11 as an output item.

FIG. 6 shows an example of a frequency analysis waveform graph displayed on the display means 11 as an output item.

FIG. 7 shows an example in which the frequency analysis waveform displayed as an output item on the display means 11 is digitized. FIG.
Shows an example of a comparison graph of the temporal history relationship between the objective fatigue level (objective nervous system physical condition) and the subjective fatigue level (subjective nervous system physical condition) displayed as output items on the display unit 11. . FIG. 9 shows an example of an evaluation graph showing a correlation between the subjective fatigue level (subjective nervous system physical condition) and the objective fatigue level (objective nervous system physical condition).

The following describes an example of measuring and evaluating an objective fatigue degree representing the degree of fatigue among the objective nervous system physical fitness and a subjective fatigue degree representing the degree of fatigue among the subjective nervous system physical fitness. .

Prior to the detection of the tremor by the vibration sensor 5, the subject responds to the question about the subjective fatigue level as in Question Example 1 or Question Example 2 shown in FIG. The input means 9a, 9b responds to the degree of fatigue that is physically felt.

The subject wears the vibration sensor 5 on a predetermined part of the body. The vibration sensor 5 detects a minute vibration (tremor) of a predetermined part of the subject's body and outputs it to the A / D converter 15 as an analog signal. The A / D converter 15 supplied with the analog signal amplifies this analog signal, converts it to a digital signal, and outputs it to the microcomputer 17. In the microcomputer 17 receiving the supply of the digital signal, the arithmetic means 18 first converts the signal 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. Sampling and frequency conversion are performed to obtain a power spectrum as shown in FIG.

As shown in the frequency analysis graph of FIG. 6, the result of the power spectrum is obtained with the horizontal axis representing frequency and the vertical axis representing power. By the way, in this frequency analysis graph, power peaks Pl and Ph which are seen at two places of about 10 Hz and about 20 Hz are formed. In the case of this graph example, the peak Pl of the power of about 10 Hz
Is caused by a control signal from the brain, and it is considered that the power peak Ph of about 20 Hz is caused by spinal cord reflex that does not pass through the brain. The magnitude P of this power peak
l, Ph, the frequencies fl, fh, the area of the frequency analysis waveform, and the like differ depending on the objective fatigue level.

Next, in the evaluation means 19, as shown in FIG.
See The objective data 31 includes the power spectrum result of tremor (the rate of change of the total power spectrum) (see reference numeral 35 in FIG. 4) and the degree of objective fatigue (the score of the degree of objective fatigue).
(See reference numeral 36 in FIG. 4). The objective fatigue level is evaluated by referring to the objective data 31, and the objective fatigue level is evaluated as a score. The evaluation method is
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 score of the objective fatigue degree corresponding to this is selected. As a result, evaluation data of the degree of objective fatigue is obtained. Since there is no previous data at the time of the first measurement, the objective fatigue degree is not evaluated.

The evaluation means 19 includes input means 9a, 9
storage means 21 based on the subjective fatigue result input by
The subjective fatigue level is evaluated by referring to the subjective data 33 stored in. This subjective fatigue level is scored based on an answer to a question regarding the subjective fatigue level, such as Question Example 1 and Question Example 2 shown in FIG. The evaluation method is
In the case of question example 1, the number of circles is the score. In the case of question example 2, the input numerical value is the score. Thereby, evaluation data of the subjective fatigue degree is obtained.

From the evaluation data of the objective fatigue level and the subjective fatigue level, a graph showing the correlation between the objective fatigue level and the subjective fatigue level as shown in FIG. 9 was obtained. Is evaluated comprehensively. In FIG. 9, the vertical axis represents the subjective fatigue level and the horizontal axis represents the objective fatigue level, and is divided into evaluation areas A to E. When both the scores of the subjective fatigue and the objective fatigue are in the evaluation area of A, it represents a very good physical condition. In the case of the evaluation area B, it indicates a state where the physical condition is above normal. In the case of the evaluation area C, both the objective fatigue and the subjective fatigue are high, the physical condition is very poor, and a fatigue state is exhibited. In the case of the evaluation area D, it indicates that the subjective fatigue degree is low but the subjective fatigue degree is high, and the feeling of fatigue due to depression is strong. In the case of the E evaluation zone, the objective fatigue degree is high but the subjective fatigue degree is low, and although the body is tired, the subject himself does not feel fatigue and represents a state to be careful.

The evaluation result by the evaluation means 19 is stored in the storage means 21 as history information.

Next, the results of the processing by the calculating means 18 and the evaluating means 19 of the microcomputer 17 are output to the display means 11. On the display means 11, the tremor waveform converted by the calculation 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. Also,
The power spectrum obtained by the arithmetic means 18 of the microcomputer 17 is displayed as a graph with frequency on the horizontal axis and power on the vertical axis as shown in FIG. The frequency analysis graph as shown in FIG. 6 may be displayed as a numerical value as shown in FIG.

Further, as shown in FIG. 8, the display means 11 displays the history information evaluated in the past and stored in the storage means 21 on the horizontal axis on the measurement date, and the vertical axis on the objective physical condition and the subjective fatigue degree. It is displayed as a graph represented by the score of. Note that the graph shown in FIG. 8 can display only one of the objective fatigue level and the subjective fatigue level.

As described above, according to the embodiment of the present invention, the tremor is measured by the tremor measuring means 23, and the degree of objective fatigue corresponding to the measurement result is determined by referring to the objective data 31.
The subjective physical condition information as shown in FIG. 3 is input by the input means 11, 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 and the degree of subjective fatigue, the subject
It becomes possible to be aware of fatigue from both an objective side and a subjective side.

[0036]

As described above, according to the configuration of the present invention, the evaluation of the nervous system physical condition such as the degree of fatigue and the degree of stress is automatically performed from both an objective side and a subjective side. To provide a possible tremor measuring device.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a tremor measuring device according to the present invention.

FIG. 2 is a block diagram showing an internal configuration of the tremor measuring device according to the present invention.

FIG. 3 is a diagram showing an example of a question forming subjective physical condition information displayed as input items on a display unit.

FIG. 4 is a diagram showing an example of objective data indicating a correlation between data on 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 a display unit.

FIG. 6 is a diagram showing an example of a frequency analysis waveform graph displayed as an output item on a display unit.

FIG. 7 is a diagram showing an example of digitizing a frequency analysis waveform displayed as an output item on a display unit.

FIG. 8 is a diagram illustrating an example of a comparison graph of a temporal history relationship between an objective fatigue degree and a subjective fatigue degree displayed as output items on a display unit.

FIG. 9 is a diagram showing an example of a graph showing a correlation between an objective degree of fatigue and a subjective degree of fatigue.

[Explanation of symbols]

 Reference Signs List 1 tremor detection unit 3 device main body 5 vibration sensor 7 band 9a, 9b input unit 11 display unit 15 A / D converter 18 arithmetic unit 19 evaluation unit 21 storage unit 23 tremor measurement unit 31 objective data 33 subjective data

Claims (3)

[Claims] 1. A tremor measuring means for measuring a tremor, which is a minute vibration of a predetermined part of a body, and a subject regarding a subjective nervous physical condition such as fatigue and stress which a subject feels psychologically when measuring the tremor. An input means for inputting physical condition information, and pre-created objective data indicating a correlation between a pre-measured tremor and an objective nervous system physical condition such as a degree of fatigue or a degree of stress that is not under the control of the will. Storage means for storing subjective data prepared in advance indicating a correlation between subjective physical condition information and subjective nervous system physical condition such as a degree of fatigue and a degree of stress felt psychologically; The objective nervous system physical condition corresponding to the tremor measurement result measured by the tremor measuring means with reference to the objective data stored in the means, and the subjective data stored in the storage means. See above Tremor instrument, characterized in that it comprises an evaluation means for determining the subjective nervous system health degree corresponding to the subjective physical condition information input by the force means. 2. A display device for displaying a correlation between the objective nervous system physical condition and the subjective nervous system physical condition determined by the evaluation device.
The tremor measuring device described in the above. 3. The display device according to claim 1, further comprising a display unit for displaying a temporal history relationship between the objective nervous system physical condition and the subjective nervous system physical condition obtained by the evaluation unit. Tremor instrument.