JP3567581B2 - Relaxation degree determination device and relaxation device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for determining a degree of relaxation related to mental stress and a relaxation apparatus for increasing the degree of relaxation.
[0002]
[Prior art]
Mental stress (degree of relaxation) has conventionally been determined by measuring brain waves, particularly α waves. In this case, the most reliable determination of the degree of relaxation can be obtained, but since the brain waves are extremely weak, the brain wave measurement means is also large and expensive, and the measurement operation is complicated and cumbersome. Met.
[0003]
For this purpose, attempts have been made to determine the degree of relaxation or arousal using a heartbeat (pulse) signal. For example, Japanese Patent Laid-Open Publication No. Hei 1-131648 discloses that a measured value of the heartbeat RR interval is subjected to fast Fourier transform. A method of obtaining a judgment index of the degree of relaxation from the processed power value of a specific frequency band and the entire power value is disclosed. Japanese Patent Application Laid-Open No. 3-272745 calculates the variance of the heartbeat RR interval. What is used as an index is shown. Japanese Patent Application Laid-Open No. 5-42129 discloses an apparatus in which a respiratory signal is detected in addition to a heartbeat signal, and variance of both or one of the signals is calculated and used as a determination index.
[0004]
[Problems to be solved by the invention]
However, if the above-mentioned fast Fourier transform is required, it is necessary to provide an advanced arithmetic processing function to the determination device, and it is difficult to make it possible to easily determine the degree of relaxation. However, there is a drawback that the apparatus is complicated in the case of detecting a respiratory signal in addition to a heartbeat signal, in addition to a large individual difference in the coincidence rate with the actual change, and a considerably low accuracy.
[0005]
The present invention has been made in view of such a point, and an object of the present invention is to provide a relaxation degree determination device capable of easily and accurately determining the degree of relaxation, and to provide another object. What is needed is to provide a relaxation device that can surely relax the human body.
[0006]
[Means for Solving the Problems]
Thus, the relaxation degree determination device according to the present invention includes a measuring unit for detecting a heart rate and a predetermined heart rate pulsation required time measuring unit for measuring a time required to hit a predetermined predetermined heart rate for each predetermined heart rate. And an increase rate calculating unit that sequentially calculates an increase rate of the predetermined heart rate pulsation required time with respect to the first predetermined heart rate pulsation required time, and a determination that determines the degree of relaxation by comparing the value of the increase rate with a determination reference value. It has the characteristic that it comprises a part. The above-mentioned judgment unit preferably uses judgment reference values of 4% and 11%, a relaxation degree of less than 4%, a relaxation degree of 4% or more and less than 11%, and a relaxation degree of 11% or more. be able to.
[0008]
ADVANTAGE OF THE INVENTION According to the relaxation degree determination apparatus of this invention, since only a heartbeat (pulse) is directly measured, the determination index is a change in time required for a required number of heartbeats, and an advanced arithmetic processing is performed. Can be determined with a high degree of accuracy, even though it is not necessary at all.
Furthermore relaxation apparatus according to the present invention, a measuring unit for detecting the heart rate, and a predetermined heart rate beats required time measurement portion that measures the time to hit the predetermined heart rate predetermined for each predetermined heart rate, first An increase rate calculation unit that sequentially calculates an increase rate of the predetermined heart rate pulsation required time with respect to the predetermined heart rate pulsation required time, and a determination unit that determines the degree of relaxation by comparing a value of the increase rate and a determination reference value, It is characterized in that it comprises a stimulus applying section for applying a stimulus according to the judgment result by the judging section to the human body. In order to provide a stimulus to the human body in accordance with the result of the determination by the determination unit, it is possible to encourage an increase in the degree of relaxation.
[0009]
The determination unit here determines the degree of relaxation in multiple stages, and the stimulus application unit preferably applies a stimulus to the human body in accordance with each determination level, and the stimulus application unit determines the relaxed state. It is preferable to apply a stimulus that is suitable for the degree and increases the degree of relaxation to the human body .
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a block diagram of a relaxation degree judging device according to the present invention, in which a measuring section 1, a predetermined heart rate pulsation required time measuring section 2, an increase It comprises a rate calculation unit 3 and a relaxation degree determination unit 4. In the present invention, since the degree of relaxation is determined on the basis of the heart rate (pulse rate), the measuring unit 1 that can detect the heart rate (pulse) is used. As the measuring unit 1, any unit may be used.
[0011]
The predetermined heart rate pulsation required time measuring section 2 is for measuring the time required for the heartbeat detected by the measuring section 1 to reach a predetermined number. Measure the time it takes to move the number. If the predetermined number is 20 beats, each time the number of detected heartbeats reaches 20, the time required during the time is measured and output. That is, each required time of the first 20 beats, the next 20 beats, and the next 20 beats is output.
[0012]
The rate-of-increase calculating section 3 calculates the time output from the predetermined heart rate pulsation required time measuring section 2 every time the heart rate reaches the predetermined number, the time required to beat the first 20 beats (initial value), Find the ratio of
The relaxation degree determination unit 4 determines the degree of relaxation by comparing the increase rate obtained by the increase rate calculation unit 3 with a reference value set in advance as an index. When the determination is made in three stages of large, medium and small, 4% is a boundary value between the small and medium relaxation levels and 11% is a boundary value between the medium and small relaxation levels for the reasons described later.
[0013]
The reason why the above-described determination reference value is adopted will be described. When the heart rate was measured and the rate of increase was calculated in parallel with the determination of the degree of relaxation based on the EEG measurement of the subject, the relaxation degree determination based on the EEG measurement was as shown in FIG. The change in the rate of increase when the number of beats was 20 was as shown in FIG. In addition, the degree of relaxation based on the EEG measurement is that when 50% or more of the brain waves are α waves and the rest are θ waves, or when all are α waves, the degree of relaxation is small, and 50% or more of the brain waves are left as θ waves. When the waves are α waves or all θ waves, the degree of relaxation is considered to be medium, and if a characteristic wave called an aneurysm appears at least once during the time required to depress a predetermined heart rate, the degree of relaxation is large. And that's going on. In the case shown in FIG. 2, the degree of relaxation shifts from the small degree of relaxation to the medium degree of relaxation in about 4 minutes from the start of the measurement, and the state changes from the medium degree of relaxation to the large degree of relaxation in about 8 minutes. On the other hand, it can be seen that the rate of increase also increases as the degree of relaxation increases.
[0014]
Here, when determining the degree of relaxation from the value of the increase rate in three stages, the values of the increase rate of 3%, 4%, 5%, 6%, and 7% are defined as the boundary values between the relaxed degree and the relaxed state. As a result of examining the transition points from the low relaxation level to the middle relaxation level, the time lag (absolute value) from the transition point from the low relaxation level to the middle relaxation degree based on the electroencephalogram measurement shown in FIG. As shown in FIG. 4, when the increase rate was 4% as a criterion, it became the smallest.
[0015]
Similarly, the values of the increase rates of 8%, 9%, 10%, 11%, and 12% are defined as boundary values between the relaxed level and the relaxed level, and the transition points from the relaxed level to the relaxed level are respectively set. As a result of the examination, the time lag (absolute value) from the transition from the middle degree of relaxation to the high degree of relaxation based on the electroencephalogram measurement became the smallest when the increase criterion was 11% as shown in FIG. .
[0016]
Therefore, when the degree of relaxation is determined in three stages from the rate of increase with respect to the time required to depress the initial predetermined heart rate, it is most preferable in terms of accuracy that 4% and 11% be the determination reference values. I understand.
[0017]
Next, a relaxation device will be described. As shown in FIG. 6, a measuring unit 1 for detecting a heartbeat, a relaxing degree determining unit 4 for determining a degree of relaxation based on the measurement result, and a stimulus corresponding to the determination result by the relaxing degree determining unit 4 are given to the human body. And a stimulus imparting unit 5 that performs the stimulation. As shown in FIG. 7, a predetermined heart rate pulsation required time measuring unit 2 for measuring the time required to hit a predetermined predetermined heart rate for each predetermined heart rate, and an initial predetermined heart rate pulsation required time and a increase rate calculating unit 3 for sequentially calculating an increase rate of a predetermined heart rate beat duration, in which relaxation determination unit 4 determines the degree of relaxation in comparison with the determination reference value and the value of the increase rate .
[0018]
Then, the stimulus giving section 5 gives a stimulus based on the judgment result by the relaxation degree judging section 4, and this stimulus effectively acts on the human body so as not to lower the relaxation degree. In order not to cause such a problem, it is preferable that a stimulus of a level corresponding to the determined degree of relaxation, particularly a stimulus that not only suits the determined degree of relaxation but also increases the degree of relaxation, is given to the human body. .
[0019]
For example, the stimulus imparting section 5 can apply a massage massage stimulus to the human body, and when the degree of relaxation is determined in three stages as described above, and when the degree of relaxation is determined to be small, The massager is configured to apply the massage massage stimulus to the human body 24 times per minute, 20 times per minute when the degree of relaxation is determined to be medium, and 16 times per minute when the degree of relaxation is determined to be large. In such a case, the stimulus reliably induces the human body in a direction to increase the degree of relaxation.
[0020]
Note that the number of stimuli is an example in the case of using the massage massage stimulus, and other stimuli may be used, and the stimulus is not limited to the massage massage stimulus. Is changed in accordance with the degree of relaxation, it is preferable to make the change in a range of 26 times or less per minute. This is because if the number of stimulations applied per minute is equal to or more than the above number, the human body cannot be in a relaxed state.
[0021]
The change of the stimulus according to the determined degree of relaxation may be performed by changing the strength of the stimulus. The stimulus is weakened as the detected degree of relaxation increases. Also in this case, if the stimulus is a massage massage stimulus, the number of stimuli applied per minute is set to 26 times or less. Of course, the stimulus may be changed by simultaneously changing both the number of times (speed) of applying the stimulus per minute and the intensity.
[0022]
Further, it is preferable that the position where the stimulus is applied to the human body is a fixed position such as the shoulder or neck of the human body. Guidance in the direction of increasing the degree of relaxation by applying the stimulus is facilitated.
[0023]
【The invention's effect】
As described above, in the present invention, since only the heart rate (pulse) is directly measured, the degree of relaxation can be easily determined, and the index of the determination also takes the required number of heartbeats. The rate of increase of the time required for the initial predetermined heart rate pulsation time is used, and no advanced arithmetic processing is required. In other words, the degree of relaxation can be determined with high accuracy.
[0024]
And in the relaxation device, since the stimulus providing unit for providing the stimulus to the human body according to the determination result by the determination unit is provided, it is possible to provide a stimulus to promote the increase in the degree of relaxation to the human body according to the degree of relaxation, It has a great effect on eliminating mental stress.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating an example of an embodiment of a relaxation degree determination device according to the present invention.
FIG. 2 is a time chart showing a transition of a degree of relaxation by brain wave measurement.
FIG. 3 is a time chart showing a change in an increase rate based on a heart rate performed in parallel with the above brain wave measurement.
FIG. 4 is an explanatory diagram showing the reason for setting a reference value for the degree of relaxation during the three-stage relaxation degree determination.
FIG. 5 is an explanatory diagram showing a reason for setting a large relaxation degree determination reference value in a three-stage relaxation degree determination.
FIG. 6 is a block diagram illustrating an example of an embodiment of a relaxation device according to the present invention.
FIG. 7 is a block diagram of another example of the above.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Measurement part 2 Predetermined heart rate pulsation required time measurement part 3 Increase rate calculation part 4 Relaxation degree judgment part 5 Stimulation giving part

Claims (5)

A measuring unit for detecting a heart rate, a predetermined heart rate pulsation required time measuring unit for measuring the time required to hit a predetermined predetermined heart rate for each predetermined heart rate, and a first predetermined heart rate pulsating required time A degree of relaxation determination, comprising: an increase rate calculating unit for sequentially calculating an increase rate of a predetermined heart rate pulsation required time; and a determination unit for determining a degree of relaxation by comparing a value of the increase rate with a determination reference value. apparatus. The judgment unit sets the judgment reference values to 4% and 11%, and sets the degree of relaxation to less than 4%, the degree of relaxation from 4% to less than 11%, and the degree of relaxation to 11% or more. The relaxation degree determination device according to claim 1. A measuring unit for detecting a heart rate, a predetermined heart rate pulsation required time measuring unit for measuring the time required to hit a predetermined predetermined heart rate for each predetermined heart rate, and a first predetermined heart rate pulsating required time An increase rate calculating section for sequentially calculating an increase rate of a predetermined heart rate required time, a determining section for determining the degree of relaxation by comparing the value of the increase rate with a determination reference value, and a stimulus according to the determination result by the determining section And a stimulus imparting unit for imparting the human body with the stimulus. 4. The relaxation apparatus according to claim 3, wherein the determining unit determines the degree of relaxation in multiple stages, and the stimulating unit applies a stimulus to the human body according to each determination level. The relaxation device according to claim 3, wherein the stimulus applying unit applies a stimulus to the human body that is suitable for the determined degree of relaxation and increases the degree of relaxation.

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