JPH06217951A - Health care device - Google Patents

Abstract

PURPOSE:To make it easy for a user to check his physical conditions himself by showing the physical conditions of the user on the basis of the shape of an attractor produced from biosignals such as pulse waves and heartbeats. CONSTITUTION:A pulse wave collecting portion 18 collects pulse waves that serve as biosignals. An attractor is produced from the pulse waves and it is determined whether or not the attractor should be displayed in a display portion 14. To store the attractor produced in memory 30, a desired area-designating flag displayed in the display portion 14 is selected. Thereafter, at the press of a determining key 28, the attractor produced is stored in the area of the memory 30 corresponding to the area-designating flag selected. Next, the attractor produced is compared with that stored in the memory 30 to check physical conditions, and in the case where the result of checking of the physical conditions is displayed in the display portion 14, the physical conditions are displayed in the display portion 14 and operations are completed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a health care device,
In particular, the present invention relates to a health management device used for, for example, a health device that presents the physical condition of a user based on the shape of an attractor generated from a biological signal such as a pulse wave or heartbeat.

[0002]

2. Description of the Related Art As a conventional technique of this type for determining a physical condition from the shape of an attractor generated from a pulse wave, Computer Healthcare Co., Ltd. has proposed a health care system (CAP) applying the couse theory. In this health management system, the physical condition of the user is determined by collecting the pulse wave of the fingertip and displaying the attractor shape.

[0003]

However, in this prior art, since only the attractor shape is displayed, only a specialist such as a doctor can judge the physical condition of the user, and a normal user who lacks specialized knowledge is required. I could not easily judge my physical condition. Therefore, a main object of the present invention is to provide a health management device which enables a user to easily determine his / her physical condition.

[0004]

According to a first aspect of the present invention, an attractor storage means for storing a plurality of patterns of attractors in advance, a biological signal collecting means for collecting biological signals, and an attractor based on the biological signals are generated. For displaying the physical condition based on the determination result by the physical condition determination unit for determining physical condition from the attractor stored in the attractor storage unit and the attractor generated by the attractor generation unit It is a health management device provided with the physical condition display means.

A second aspect of the invention is a housing having a portable size, a biosignal collecting means for transmitting a biosignal from an individual to the housing, and an attractor which is housed in the housing and is based on the biosignal. Attractor generation means for, a attractor storage means for storing in advance a plurality of patterns of attractors housed in the housing, a physical condition from the attractor stored in the attractor storage means and the attractor generated by the attractor generation means A physical condition determination means for determining, a display instruction means operably provided on the housing for instructing a physical condition display, and a physical condition display means for displaying a physical condition in response to an instruction from the display instruction means , A health care device.

[0006]

In the first aspect of the invention, the user collects his / her own biological signal by the biological signal collecting means. Attractors are generated from the collected biomedical signals by the attractor generation means, and a plurality of patterns of attractors are stored in the attractor storage means. When the user determines his / her physical condition, the biological signal collecting unit collects his / her biological signal, and the physical condition determining unit determines the physical condition from the attractor and the attractor stored in the attractor storage unit. At this time, the physical condition is determined by, for example, calculating the shape or structural similarity of the attractor. Then, the determination result is displayed on the physical condition display means, and it is possible to determine what physical condition the user is at that time, that is, the physical condition or mental condition.

According to the second aspect of the invention, the device is configured to be portable so that the user can determine the physical condition at any place and time.

[0008]

According to the first aspect of the present invention, the result of physical condition determination of the attractor is displayed on the physical condition display means, so that the user can easily know his / her physical condition. Further, according to the second invention, since the device is configured to be portable,
You can easily know your physical condition by measuring biological signals such as pulse wave and heartbeat anytime, anywhere (for example, during sports or work). Therefore, it is effective for personal self-health management.

The above-mentioned objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments with reference to the drawings.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a portable health care device 10 of this embodiment is formed in a box type, for example. The portable health management device 10 includes a housing 12 having a substantially rectangular parallelepiped shape. A display unit 14 for displaying the generated attractor and physical condition is formed on the front side (see FIG. 1) of the main surface of the housing 12. As shown in FIG. 2, when a plurality of generated attractor patterns are stored in desired areas of the memory 30 (described later) on the front side of the display unit 14, the area designation flag 1 is used to designate the areas.
6 is displayed. The area designation flag 16 may be always displayed, or may be displayed after the pulse wave collection described later is completed. In this embodiment, "1"-
Five area designation flags 16 of “5” are displayed, and five types of attractors can be stored in the memory 30. For example, "1" is a normal state when you are healthy, "2" is when you are tired,
It is desirable to specify in what state each area designation flag 16 corresponds to the area of the memory 30 storing the attractor, such as “3” being a stressed state. The area designation flag 16, that is, the storable number of attractors can be set arbitrarily.

A pulse wave collecting unit 18 for collecting a pulse wave which is a biological signal by placing a fingertip on the housing 12, an attractor display key 20 for displaying the generated attractor on the display unit 14, A physical condition display key 22 for displaying a physical condition on the display unit 14, a memory key 24 used for storing in the memory 24 a plurality of patterns of attractors having different physical conditions such as a user's health condition and mental condition,
Area selection keys 26a and 26b for selecting a desired area designation flag 16 and an enter key 28 for storing an attractor in a desired area of the selected memory 30.
Is formed. When you press the area selection key 26a,
The selected area designation flag 16 is changed one by one from "5" to "1", and the area selection key 2
Area selection flag 16 selected by pressing 6b
Is changed one by one from "1" to "5". The area selection key may be composed of one key.

The pulse wave collecting unit 18 has a photoelectric sensor (not shown) including, for example, a light emitting diode and a phototransistor, and photoelectrically detects the blood flow at the fingertip by the reflection of the light projected on the fingertip to obtain a voltage. By converting, the pulse wave is detected as a voltage. Therefore, the housing 12 of the pulse wave collecting portion 18 needs to be transparent to the extent that the photoelectric sensor functions. Further, when the pulse wave is collected, the pulse wave cannot be accurately collected unless the fingertip can be fixed.
If the photoelectric sensor senses external light even when the fingertip is placed on the, it may cause a disturbance. Therefore, in FIG. 1, the pulse wave collecting portion 16 is formed by, for example, slightly denting it in a curved sectional shape to eliminate the above-mentioned adverse effects.

A memory 30 is housed in the housing 12, as shown in FIG. In the memory 30,
Operate the above-mentioned keys to, for example, the normal state of health,
Attractors for each condition such as fatigue, stress, and a bad physical condition such as a cold are stored in advance. Chaotic nature is inherent in the biomedical signal observed as a time series signal, and the shape of the attractor generated from the biomedical signal is
It varies depending on the person and the physical condition of the person. Therefore, each attractor is stored in the memory 30 when the physical condition of the user is not good. The attractors in the normal state during health, fatigue, and stress are shown in FIGS. 4 (A) to 4 (C), respectively.

The shape of the attractor varies depending on the physical condition of the person, as shown in FIGS. 4 (A) to 4 (C). Generally, the shape of the attractor is in a fatigued state or in a stressed state as compared with a normal state in a healthy state. Is structurally simple and tends to be small in size. Therefore, the physical condition of the person can be estimated from the shape and structural characteristics of the attractor.

In addition to the memory 30, the CPU 32 is housed in the housing 12. When the user checks his / her physical condition, the CPU 28 generates an attractor based on the pulse wave collected from the pulse wave collecting unit 18, and when the attractor display key 20 is pressed, the generated attractor is displayed on the display unit 14. To be done. Next, the CPU 32 calculates the shape or structural similarity between the generated attractor and the attractor previously stored in the memory 30, and compares the two attractors. As a method of calculating the similarity of attractors, a geometrical feature amount of the attractor is extracted by using a structural analysis method which is a typical pattern recognition method, and the attractor of a plurality of patterns stored in the memory 30 is extracted. There is a method of determining the degree of similarity by comparing with the feature amount of. Then, the calculation result of the similarity is displayed on the display unit 14 when the physical condition display key 22 is pressed, and the physical condition at that time is presented to the user.

Examples of the display of the physical condition displayed on the display unit 14 include those shown in FIGS. 5 (A) to 5 (C). The axes of A, B, and C shown in FIGS. 5A to 5C indicate the degree of similarity with the health state, fatigue, and stress state, respectively. The larger the value, the greater the degree of similarity. It is said that In this display example, the degree of similarity is displayed on a scale of 0 to 10, and the degree of similarity increases as the degree of similarity approaches 10. Therefore, when the result as shown in FIG. 5A is presented, the user knows that the current state is close to the health state. Similarly, when the result shown in FIG. 5B is presented, it is known that the user is tired.
Similarly, when the result as shown in FIG. 5 (C) is presented, the user is in a stressed state. As described above, since the physical condition is not determined based on the attractor shape, it is possible for an individual to easily adjust his / her physical condition based on the shape of the graphic displayed on the display unit 14 without requiring specialized medical knowledge. Can be determined.

Here, a method of reconstructing the attractor from the pulse wave will be described. Generally, in an m-dimensional dynamical system, the change rule of the state of the system at any time can be described by a function of m state variables. At this time, the observable steady state of the dynamic system corresponds to the attractor in this m-dimensional state space. However, when an actual measurement or a time-series signal obtained by measurement is used as an analysis target, it is impossible to completely observe the state variable in the m-dimensional space, and normally, when one variable such as Equation 1 is used. The sequence signal will be observed.

[0018]

[Number 1] _{ξ 1, ξ 2, ...,} ξ t, ... In this case, from the time-series signal of one variable is measured, it is necessary to reconstruct the attractor of the dynamical system in the original high-dimensional space. In order to reconstruct an attractor from variables such as Equation 1, a method of reconstructing an attractor using a difference for every fixed time is often used. Specifically, the size of the time delay is set to T (= sampling time × a), and an m-dimensional vector such as Equation 2 is created from the time-series signal ξ _{t in} the reconstructed state space whose embedding dimension is m-dimensional. To do.

[0019]

[Equation 2]

FIG. 6 shows a time series signal for each time used when creating data of the m-dimensional state space (m = 3, a =
2). In FIG. 6, s is a sampling time and T
Is the delay time. In this case, since m = 3 and a = 2, X shown in the equation 2 is composed of three ξ, and is composed of the value of ξ for each delay time T (= sampling time × 2). For example, X ₁ , X ₂ and X ₃ are sampled as shown in FIG.

Here, an example of the analysis result is shown. In Figure 7,
Time series signal of analyzed pulse wave (sampling time: 1
9.5 msec. ). FIG. 8 shows the frequency analysis result of the pulse wave. It can be seen from FIG. 8 that the analyzed pulse wave contains components in almost all frequency bands. Moreover,
Characteristic that power spectrum is almost inversely proportional to frequency (1 /
f ^A characteristic).

FIG. 9 shows the attractor reconstructed from the pulse wave. In FIG. 9, a = 12 and embedding dimension m =
2, delay time T = 234 msec. (= 19.5 msec. × 1
2) shows attractors when the sampling number is 1792. As shown in FIG. 9, when one pulse wave ξ _n is determined, the next ξ _{n + a} is determined. In the example of FIG. 9, the sampling time is 19.5 msec. And the sampling number is 1792.
Since the number is one, the time for putting the fingertip on the pulse wave collecting unit 18 needs to be at least 35 seconds (≈19.5 msec. × 1792). However, the sampling time and the sampling number may be arbitrary. In addition, as shown in FIG.
The delay time T is the time when the autocorrelation coefficient of the pulse wave first becomes zero. The operation of the portable health management device 10 will be described with reference to FIG.

First, in step S1, the pulse wave collecting section 18 collects a pulse wave which is a biological signal. At step S3, an attractor is generated from the pulse wave, and at step S5, it is determined whether or not to display the generated attractor on the display unit 14. When the attractor display key 20 is pressed to display the attractor, in step S7 the generated attractor is displayed on the display unit 1.
After being displayed in 4, the process proceeds to step S9. Step S5
If the attractor is not displayed in step S,
Proceed to 9.

In step S9, it is determined whether or not the generated attractor is stored in the memory 30, and if the attractor is stored in the memory 30 by pressing the memory key 24, the process proceeds to step S11. If the attractor is displayed in step S7, it becomes easy to determine whether or not it should be stored based on the shape of the attractor. In step S11, the area selection key 26a
Alternatively, the user operates 26b to select a desired one from the area designation flags 16 of "1" to "5" displayed on the display unit 14. Then, when the enter key 28 is pressed, the generated attractor is stored in the area of the memory 30 corresponding to the selected area designation flag 16. In this way, for example, the attractor in the normal state during health, the attractor in the fatigue state, and the stressed state are stored in advance in the memory 30.
Is stored in a predetermined area, and the process proceeds to step S13. On the other hand, if the attractor is not stored in step S9, the process proceeds to step S13. In step S13, the attractor generated and the attractor stored in the memory 30 are compared to determine the physical condition, and step S1
Go to 5. In step S15, it is determined whether or not to display the physical condition determination result on the display unit 14. To display the physical condition by pressing the physical condition display key 22, step S1
In 7, the physical condition is displayed on the display unit 14, and the process ends.
When the physical condition is not displayed in step S15, the process ends. Thus, the attractor and the physical condition can be displayed on the display unit 14 each time by collecting the pulse wave once.

The pulse wave collecting portion 18 may have a flat plate shape as long as external light does not enter the photoelectric sensor when a fingertip is placed thereon. However, in this case, it is necessary to pay attention to the fixation of the fingertip so that the accurate pulse wave can be collected. Further, the portable health management device 10 may be formed as shown in FIG. The pulse wave collecting unit 14 of the portable health care device 10 illustrated in FIG. 12 includes a fingertip placement unit 14a and a spring member 14b, and the placement unit 14a is attached to the housing 12 via the spring member 14b. Then, when the fingertip is placed on the placement portion 14a, the pushing force causes the spring member to contract, whereby the placement portion 14a moves in the direction of arrow A. When the pressing force increases to some extent, the spring member 14b contracts, that is, the arrangement portion 14a.
The movement in the direction of arrow A is stopped. That is, at this time, since the spring member 14b is in the most contracted state,
The placement unit 14a does not move further in the direction of arrow A, and the user can also recognize that the placement unit 14a has stopped moving. Therefore, for example, the user adjusts the pressing force of the fingertip so that the spring member is not in the most contracted state, that is, the movement of the disposing portion 14a in the direction of the arrow A does not stop, and the pressing force becomes too large. You can avoid it. As a result, the pressing force of the fingertip becomes too large, the blood flow changes, and the natural blood flow cannot be detected.

Further, the pulse wave collecting section 14 includes the housing 12
13 is not only formed on the main surface of the housing 12, but may be formed so that a fingertip is inserted from the side surface of the housing 12 as shown in FIG. 13, and may be of a "finger sack" type. . By forming in this way, external light can be easily shielded from the photoelectric sensor. Further, although the box-type portable health management device 10 has been described in the above-mentioned embodiment, the invention is not limited to this, and may have any shape such as a wristwatch type or an electronic notebook type as shown in FIG. 14, for example. Well, it's not necessarily portable. Further, in the above-mentioned embodiment, as the biological signal to be collected,
Although the pulse wave of the fingertip where physical condition, especially psychological change is apt to appear, the pulse wave, heartbeat, electrocardiogram and brain wave collected from other places may be collected as the biological signal.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a plan view showing this embodiment.

FIG. 3 is a block diagram showing the configuration of this embodiment.

FIG. 4 is an illustrative view showing an attractor generated from each pulse wave when the physical condition of a person is different.

FIG. 5 is an illustrative view showing a display example of a physical condition.

FIG. 6 is a graph showing a time-series signal for each time used when creating data of an m-dimensional state space.

FIG. 7 is a graph showing a time series signal of a pulse wave.

FIG. 8 is a graph showing frequency characteristics of pulse waves.

FIG. 9 is a graph showing an attractor reconstructed from a pulse wave.

FIG. 10 is a graph showing an autocorrelation function of a pulse wave.

FIG. 11 is a flowchart showing the operation of this embodiment.

FIG. 12 is a sectional view showing another embodiment of the present invention.

FIG. 13 is an illustrative view showing an appearance of another embodiment of the present invention.

FIG. 14 is an illustrative view showing an appearance of another embodiment of the present invention.

[Explanation of symbols]

 10 ... portable health management device 12 ... housing 14 ... display unit 16 ... area designation flag 18 ... pulse wave collection unit 20 ... attractor display key 22 ... physical condition display key 24 ... memory keys 26a, 26b ... flag selection key 28 ... decision key 30 ... Memory 32 ... CPU

Claims (2)

[Claims] 1. An attractor storage means for storing a plurality of patterns of attractors in advance, a biological signal collection means for collecting a biological signal, an attractor generation means for generating an attractor based on the biological signal, and the attractor storage. A physical condition determination means for determining a physical condition from the attractor stored in the means and the attractor generated by the attractor generation means, and a physical condition display means for displaying the physical condition based on the determination result of the physical condition determination means. , Health care equipment. 2. A portable size housing, a bio-signal collecting means for transmitting a bio-signal from an individual into the housing, and an attractor which is housed in the housing and based on the bio-signal. Attractor generating means, attractor storing means that is stored in the housing and stores in advance a plurality of pattern attractors of the individual, the attractor stored in the attractor storing means, and the attractor generated by the attractor generating means Physical condition determination means for determining physical condition from the attractor, display instruction means provided on the housing so as to be operable from the outside, and displaying physical condition in response to the instruction from the display instruction means A health management device comprising physical condition display means for.